Merge branch 'master' into nac3

README.rst

@@ -5,7 +5,7 @@
   :target: https://m-labs.hk/artiq
 
 ARTIQ (Advanced Real-Time Infrastructure for Quantum physics) is a leading-edge control and data acquisition system for quantum information experiments.
-It is maintained and developed by `M-Labs <https://m-labs.hk>`_ and the initial development was for and in partnership with the `Ion Storage Group at NIST <https://www.nist.gov/pml/time-and-frequency-division/ion-storage>`_. ARTIQ is free software and offered to the entire research community as a solution equally applicable to other challenging control tasks, including outside the field of ion trapping. Many laboratories around the world have adopted ARTIQ as their control system, with over a hundred Sinara hardware crates deployed, and some have `contributed <https://m-labs.hk/experiment-control/funding/>`_ to it.
+It is maintained and developed by `M-Labs <https://m-labs.hk>`_ and the initial development was for and in partnership with the `Ion Storage Group at NIST <https://www.nist.gov/pml/time-and-frequency-division/ion-storage>`_. ARTIQ is free software and offered to the entire research community as a solution equally applicable to other challenging control tasks, including outside the field of ion trapping. Many laboratories around the world have adopted ARTIQ as their control system and some have `contributed <https://m-labs.hk/experiment-control/funding/>`_ to it.
 
 The system features a high-level programming language that helps describing complex experiments, which is compiled and executed on dedicated hardware with nanosecond timing resolution and sub-microsecond latency. It includes graphical user interfaces to parametrize and schedule experiments and to visualize and explore the results.
 
@@ -29,7 +29,7 @@ Website: https://m-labs.hk/artiq
 License
 =======
 
-Copyright (C) 2014-2023 M-Labs Limited.
+Copyright (C) 2014-2024 M-Labs Limited.
 
 ARTIQ is free software: you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by

RELEASE_NOTES.rst

@@ -8,36 +8,94 @@ ARTIQ-8 (Unreleased)
 
 Highlights:
 
-* Hardware support:
+* New hardware support:
+   - Support for Shuttler, a 16-channel 125MSPS DAC card intended for ion transport.
+     Waveform generator and user API are similar to the NIST PDQ.
    - Implemented Phaser-servo. This requires recent gateware on Phaser.
-   - Implemented Phaser-MIQRO support. This requires the Phaser MIQRO gateware
-     variant.
+   - Almazny v1.2 with finer RF switch control.
+   - Metlino and Sayma support has been dropped due to complications with synchronous RTIO clocking.
+   - More user LEDs are exposed to RTIO on Kasli.
+   - Implemented Phaser-MIQRO support. This requires the proprietary Phaser MIQRO gateware
+     variant from QUARTIQ.
    - Sampler: fixed ADC MU to Volt conversion factor for Sampler v2.2+.
      For earlier hardware versions, specify the hardware version in the device
      database file (e.g. ``"hw_rev": "v2.1"``) to use the correct conversion factor.
-   - Almazny v1.2. It is incompatible with the legacy versions and is the default. To use legacy
-     versions, specify ``almazny_hw_rev`` in the JSON description.
-   - Metlino and Sayma support has been dropped due to complications with synchronous RTIO clocking.
+* Support for distributed DMA, where DMA is run directly on satellites for corresponding
+  RTIO events, increasing bandwidth in scenarios with heavy satellite usage.
+* Support for subkernels, where kernels are run on satellite device CPUs to offload some
+  of the processing and RTIO operations.
 * CPU (on softcore platforms) and AXI bus (on Zynq) are now clocked synchronously with the RTIO
   clock, to facilitate implementation of local processing on DRTIO satellites, and to slightly
   reduce RTIO latency.
-* MSYS2 packaging for Windows, which replaces Conda. Conda packages are still available to
-  support legacy installations, but may be removed in a future release.
-* Added channel names to RTIO errors.
-* Full Python 3.10 support.
-* Python's built-in types (such as `float`, or `List[...]`) can now be used in type annotations on
-  kernel functions.
-* Distributed DMA is now supported, allowing DMA to be run directly on satellites for corresponding
-  RTIO events, increasing bandwidth in scenarios with heavy satellite usage.
-* Applet Request Interfaces have been implemented, enabling applets to directly modify datasets 
-  and temporarily set arguments in the dashboard.
-* EntryArea widget has been implemented, allowing argument entry widgets to be used in applets.
-* Dashboard:
+* Support for DRTIO-over-EEM, used with Shuttler.
+* Support for WRPLL low-noise clock recovery.
+* Enabled event spreading on DRTIO satellites, using high watermark for lane switching.
+* Added channel names to RTIO error messages.
+* The RTIO analyzer is now proxied by ``aqctl_coreanalyzer_proxy`` typically running on the master
+  machine, similarly to ``aqctl_moninj_proxy``.
+* GUI:
+   - Integrated waveform analyzer, removing the need for external VCD viewers such as GtkWave.
+   - Implemented Applet Request Interfaces which allow applets to modify datasets and set the
+     current values of widgets in the dashboard's experiment windows.
+   - Implemented a new ``EntryArea`` widget which allows argument entry widgets to be used in applets.
    - The "Close all applets" command (shortcut: Ctrl-Alt-W) now ignores docked applets,
      making it a convenient way to clean up after exploratory work without destroying a
      carefully arranged default workspace.
-* Persistent datasets are now stored in a LMDB database for improved performance. PYON databases can
-  be converted with the script below.
+   - Hotkeys now organize experiment windows in the order they were last interacted with:
+      + CTRL+SHIFT+T tiles experiment windows
+      + CTRL+SHIFT+C cascades experiment windows
+   - By enabling the ``quickstyle`` option, ``EnumerationValue`` entry widgets can now alternatively display 
+     its choices as buttons that submit the experiment on click.
+* Datasets can now be associated with units and scale factors, and displayed accordingly in the dashboard
+  including applets, like widgets such as ``NumberValue`` already did in earlier ARTIQ versions.
+* Experiments can now request arguments interactively from the user at any time.
+* Persistent datasets are now stored in a LMDB database for improved performance.
+* Python's built-in types (such as ``float``, or ``List[...]``) can now be used in type annotations on
+  kernel functions.
+* MSYS2 packaging for Windows, which replaces Conda. Conda packages are still available to
+  support legacy installations, but may be removed in a future release.
+* Experiments can now be submitted with revisions set to a branch / tag name instead of only git hashes.
+* Grabber image input now has an optional timeout.
+* On NAR3-supported devices (Kasli-SoC, ZC706), when a Rust panic occurs, a minimal environment is started
+  where the network and ``artiq_coremgmt`` can be used. This allows the user to inspect logs, change
+  configuration options, update the firmware, and reboot the device.
+* Full Python 3.11 support.
+
+Breaking changes:
+
+* ``SimpleApplet`` now calls widget constructors with an additional ``ctl`` parameter for control
+  operations, which includes dataset operations. It can be ignored if not needed. For an example usage,
+  refer to the ``big_number.py`` applet.
+* ``SimpleApplet`` and ``TitleApplet`` now call ``data_changed`` with additional parameters. Derived applets
+  should change the function signature as below:
+
+::
+
+  # SimpleApplet
+  def data_changed(self, value, metadata, persist, mods)
+  # SimpleApplet (old version)
+  def data_changed(self, data, mods)
+  # TitleApplet
+  def data_changed(self, value, metadata, persist, mods, title)
+  # TitleApplet (old version)
+  def data_changed(self, data, mods, title)
+
+Accesses to the data argument should be replaced as below:
+
+::
+
+  data[key][0] ==> persist[key]
+  data[key][1] ==> value[key]
+
+* The ``ndecimals`` parameter in ``NumberValue`` and ``Scannable`` has been renamed to ``precision``. 
+  Parameters after and including ``scale`` in both constructors are now keyword-only.
+  Refer to the updated ``no_hardware/arguments_demo.py`` example for current usage.
+* Almazny v1.2 is incompatible with the legacy versions and is the default.
+  To use legacy versions, specify ``almazny_hw_rev`` in the JSON description.
+* kasli_generic.py has been merged into kasli.py, and the demonstration designs without JSON descriptions
+  have been removed. The base classes remain present in kasli.py to support third-party flows without
+  JSON descriptions.
+* Legacy PYON databases should be converted to LMDB with the script below:
 
 ::
 
@@ -51,35 +109,7 @@ Highlights:
       txn.put(key.encode(), pyon.encode((value, {})).encode())
   new.close()
 
-Breaking changes:
-
-* ``SimpleApplet`` now calls widget constructors with an additional ``ctl`` parameter for control
-  operations, which includes dataset operations. It can be ignored if not needed. For an example usage,
-  refer to the ``big_number.py`` applet.
-* ``SimpleApplet`` and ``TitleApplet`` now call ``data_changed`` with additional parameters. Wrapped widgets
-  should refactor the function signature as seen below:
-::
-
-  # SimpleApplet
-  def data_changed(self, value, metadata, persist, mods)
-  # SimpleApplet (old version)
-  def data_changed(self, data, mods)
-  # TitleApplet
-  def data_changed(self, value, metadata, persist, mods, title)
-  # TitleApplet (old version)
-  def data_changed(self, data, mods, title)
-
-Old syntax should be replaced with the form shown on the right.
-::
-
-  data[key][0] ==> persist[key]
-  data[key][1] ==> value[key]
-  data[key][2] ==> metadata[key]
-
-* The ``ndecimals`` parameter in ``NumberValue`` and ``Scannable`` has been renamed to ``precision``. 
-  Parameters after and including ``scale`` in both constructors are now keyword-only.
-  Refer to the updated ``no_hardware/arguments_demo.py`` example for current usage.
-
+* ``artiq.wavesynth`` has been removed.
 
 ARTIQ-7
 -------

artiq/_version.py

@@ -1,4 +1,7 @@
 import os
 
+def get_rev():
+    return os.getenv("VERSIONEER_REV", default="unknown")
+
 def get_version():
-    return os.getenv("VERSIONEER_OVERRIDE", default="8.0+unknown.beta")
+    return os.getenv("VERSIONEER_OVERRIDE", default="10.0+unknown.beta")

artiq/applets/big_number.py

@@ -2,6 +2,8 @@
 
 from PyQt5 import QtWidgets, QtCore, QtGui
 from artiq.applets.simple import SimpleApplet
+from artiq.tools import scale_from_metadata
+from artiq.gui.tools import LayoutWidget
 
 
 class QResponsiveLCDNumber(QtWidgets.QLCDNumber):
@@ -21,29 +23,41 @@ class QCancellableLineEdit(QtWidgets.QLineEdit):
             super().keyPressEvent(event)
 
 
-class NumberWidget(QtWidgets.QStackedWidget):
+class NumberWidget(LayoutWidget):
     def __init__(self, args, req):
-        QtWidgets.QStackedWidget.__init__(self)
+        LayoutWidget.__init__(self)
         self.dataset_name = args.dataset
         self.req = req
+        self.metadata = dict()
+
+        self.number_area = QtWidgets.QStackedWidget()
+        self.addWidget(self.number_area, 0, 0)
+
+        self.unit_area = QtWidgets.QLabel()
+        self.unit_area.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTop)
+        self.addWidget(self.unit_area, 0, 1)
 
         self.lcd_widget = QResponsiveLCDNumber()
         self.lcd_widget.setDigitCount(args.digit_count)
         self.lcd_widget.doubleClicked.connect(self.start_edit)
-        self.addWidget(self.lcd_widget)
+        self.number_area.addWidget(self.lcd_widget)
 
         self.edit_widget = QCancellableLineEdit()
         self.edit_widget.setValidator(QtGui.QDoubleValidator())
-        self.edit_widget.setAlignment(QtCore.Qt.AlignRight)
+        self.edit_widget.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignVCenter)
         self.edit_widget.editCancelled.connect(self.cancel_edit)
         self.edit_widget.returnPressed.connect(self.confirm_edit)
-        self.addWidget(self.edit_widget)
+        self.number_area.addWidget(self.edit_widget)
 
         font = QtGui.QFont()
         font.setPointSize(60)
         self.edit_widget.setFont(font)
 
-        self.setCurrentWidget(self.lcd_widget)
+        unit_font = QtGui.QFont()
+        unit_font.setPointSize(20)
+        self.unit_area.setFont(unit_font)
+
+        self.number_area.setCurrentWidget(self.lcd_widget)
 
     def start_edit(self):
         # QLCDNumber value property contains the value of zero
@@ -51,22 +65,32 @@ class NumberWidget(QtWidgets.QStackedWidget):
         self.edit_widget.setText(str(self.lcd_widget.value()))
         self.edit_widget.selectAll()
         self.edit_widget.setFocus()
-        self.setCurrentWidget(self.edit_widget)
+        self.number_area.setCurrentWidget(self.edit_widget)
 
     def confirm_edit(self):
-        value = float(self.edit_widget.text())
-        self.req.set_dataset(self.dataset_name, value)
-        self.setCurrentWidget(self.lcd_widget)
+        scale = scale_from_metadata(self.metadata)
+        val = float(self.edit_widget.text())
+        val *= scale
+        self.req.set_dataset(self.dataset_name, val, **self.metadata)
+        self.number_area.setCurrentWidget(self.lcd_widget)
 
     def cancel_edit(self):
-        self.setCurrentWidget(self.lcd_widget)
+        self.number_area.setCurrentWidget(self.lcd_widget)
 
     def data_changed(self, value, metadata, persist, mods):
         try:
-            n = float(value[self.dataset_name])
+            self.metadata = metadata[self.dataset_name]
+            # This applet will degenerate other scalar types to native float on edit
+            # Use the dashboard ChangeEditDialog for consistent type casting 
+            val = float(value[self.dataset_name])
+            scale = scale_from_metadata(self.metadata)
+            val /= scale
         except (KeyError, ValueError, TypeError):
-            n = "---"
-        self.lcd_widget.display(n)
+            val = "---"
+        
+        unit = self.metadata.get("unit", "")
+        self.unit_area.setText(unit)
+        self.lcd_widget.display(val)
 
 
 def main():

artiq/applets/plot_xy.py

@@ -24,11 +24,11 @@ class XYPlot(pyqtgraph.PlotWidget):
             y = value[self.args.y]
         except KeyError:
             return
-        x = value.get(self.args.x, (False, None))
+        x = value.get(self.args.x)
         if x is None:
             x = np.arange(len(y))
-        error = value.get(self.args.error, (False, None))
-        fit = value.get(self.args.fit, (False, None))
+        error = value.get(self.args.error)
+        fit = value.get(self.args.fit)
 
         if not len(y) or len(y) != len(x):
             self.mismatch['X values'] = True

artiq/applets/simple.py

@@ -42,13 +42,13 @@ class _AppletRequestInterface:
         """
         raise NotImplementedError
 
-    def set_argument_value(self, expurl, name, value):
+    def set_argument_value(self, expurl, key, value):
         """
         Temporarily set the value of an argument in a experiment in the dashboard.
         The value resets to default value when recomputing the argument.
 
         :param expurl: Experiment URL identifying the experiment in the dashboard. Example: 'repo:ArgumentsDemo'.
-        :param name: Name of the argument in the experiment.
+        :param key: Name of the argument in the experiment.
         :param value: Object representing the new temporary value of the argument. For ``Scannable`` arguments, this parameter
             should be a ``ScanObject``. The type of the ``ScanObject`` will be set as the selected type when this function is called. 
         """
@@ -77,10 +77,10 @@ class AppletRequestIPC(_AppletRequestInterface):
         mod = {"action": "append", "path": [key, 1], "x": value}
         self.ipc.update_dataset(mod)
 
-    def set_argument_value(self, expurl, name, value):
+    def set_argument_value(self, expurl, key, value):
         if isinstance(value, ScanObject):
             value = value.describe()
-        self.ipc.set_argument_value(expurl, name, value)
+        self.ipc.set_argument_value(expurl, key, value)
 
 
 class AppletRequestRPC(_AppletRequestInterface):
@@ -182,10 +182,10 @@ class AppletIPCClient(AsyncioChildComm):
         self.write_pyon({"action": "update_dataset",
                          "mod": mod})
 
-    def set_argument_value(self, expurl, name, value):
+    def set_argument_value(self, expurl, key, value):
         self.write_pyon({"action": "set_argument_value",
                          "expurl": expurl,
-                         "name": name,
+                         "key": key,
                          "value": value})
 
 
@@ -255,7 +255,7 @@ class SimpleApplet:
         if self.embed is None:
             dataset_ctl = RPCClient()
             self.loop.run_until_complete(dataset_ctl.connect_rpc(
-                self.args.server, self.args.port_control, "master_dataset_db"))
+                self.args.server, self.args.port_control, "dataset_db"))
             self.req = AppletRequestRPC(self.loop, dataset_ctl)
         else:
             self.req = AppletRequestIPC(self.ipc)

artiq/browser/datasets.py

@@ -33,7 +33,7 @@ class DatasetCtl:
         try:
             remote = RPCClient()
             await remote.connect_rpc(self.master_host, self.master_port,
-                                     "master_dataset_db")
+                                     "dataset_db")
             try:
                 if op_name == "set":
                     await remote.set(key_or_mod, value, persist, metadata)

artiq/browser/experiments.py

@@ -10,87 +10,26 @@ import h5py
 from sipyco import pyon
 
 from artiq import __artiq_dir__ as artiq_dir
-from artiq.gui.tools import (LayoutWidget, WheelFilter, 
-                             log_level_to_name, get_open_file_name)
-from artiq.gui.entries import procdesc_to_entry
+from artiq.gui.tools import (LayoutWidget, log_level_to_name, get_open_file_name)
+from artiq.gui.entries import procdesc_to_entry, EntryTreeWidget
 from artiq.master.worker import Worker, log_worker_exception
 
 logger = logging.getLogger(__name__)
 
 
-class _ArgumentEditor(QtWidgets.QTreeWidget):
+class _ArgumentEditor(EntryTreeWidget):
     def __init__(self, dock):
-        QtWidgets.QTreeWidget.__init__(self)
-        self.setColumnCount(3)
-        self.header().setStretchLastSection(False)
-        try:
-            set_resize_mode = self.header().setSectionResizeMode
-        except AttributeError:
-            set_resize_mode = self.header().setResizeMode
-        set_resize_mode(0, QtWidgets.QHeaderView.ResizeToContents)
-        set_resize_mode(1, QtWidgets.QHeaderView.Stretch)
-        set_resize_mode(2, QtWidgets.QHeaderView.ResizeToContents)
-        self.header().setVisible(False)
-        self.setSelectionMode(self.NoSelection)
-        self.setHorizontalScrollMode(self.ScrollPerPixel)
-        self.setVerticalScrollMode(self.ScrollPerPixel)
-
-        self.setStyleSheet("QTreeWidget {background: " +
-                           self.palette().midlight().color().name() + " ;}")
-
-        self.viewport().installEventFilter(WheelFilter(self.viewport(), True))
-
-        self._groups = dict()
-        self._arg_to_widgets = dict()
+        EntryTreeWidget.__init__(self)
         self._dock = dock
 
         if not self._dock.arguments:
-            self.addTopLevelItem(QtWidgets.QTreeWidgetItem(["No arguments"]))
-        gradient = QtGui.QLinearGradient(
-            0, 0, 0, QtGui.QFontMetrics(self.font()).lineSpacing()*2.5)
-        gradient.setColorAt(0, self.palette().base().color())
-        gradient.setColorAt(1, self.palette().midlight().color())
+            self.insertTopLevelItem(0, QtWidgets.QTreeWidgetItem(["No arguments"]))
 
         for name, argument in self._dock.arguments.items():
-            widgets = dict()
-            self._arg_to_widgets[name] = widgets
+            self.set_argument(name, argument)
 
-            entry = procdesc_to_entry(argument["desc"])(argument)
-            widget_item = QtWidgets.QTreeWidgetItem([name])
-            if argument["tooltip"]:
-                widget_item.setToolTip(0, argument["tooltip"])
-            widgets["entry"] = entry
-            widgets["widget_item"] = widget_item
+        self.quickStyleClicked.connect(self._dock._run_clicked)
 
-            for col in range(3):
-                widget_item.setBackground(col, gradient)
-            font = widget_item.font(0)
-            font.setBold(True)
-            widget_item.setFont(0, font)
-
-            if argument["group"] is None:
-                self.addTopLevelItem(widget_item)
-            else:
-                self._get_group(argument["group"]).addChild(widget_item)
-            fix_layout = LayoutWidget()
-            widgets["fix_layout"] = fix_layout
-            fix_layout.addWidget(entry)
-            self.setItemWidget(widget_item, 1, fix_layout)
-
-            recompute_argument = QtWidgets.QToolButton()
-            recompute_argument.setToolTip("Re-run the experiment's build "
-                                          "method and take the default value")
-            recompute_argument.setIcon(
-                QtWidgets.QApplication.style().standardIcon(
-                    QtWidgets.QStyle.SP_BrowserReload))
-            recompute_argument.clicked.connect(
-                partial(self._recompute_argument_clicked, name))
-            fix_layout = LayoutWidget()
-            fix_layout.addWidget(recompute_argument)
-            self.setItemWidget(widget_item, 2, fix_layout)
-
-        widget_item = QtWidgets.QTreeWidgetItem()
-        self.addTopLevelItem(widget_item)
         recompute_arguments = QtWidgets.QPushButton("Recompute all arguments")
         recompute_arguments.setIcon(
             QtWidgets.QApplication.style().standardIcon(
@@ -100,7 +39,7 @@ class _ArgumentEditor(QtWidgets.QTreeWidget):
         load = QtWidgets.QPushButton("Set arguments from HDF5")
         load.setToolTip("Set arguments from currently selected HDF5 file")
         load.setIcon(QtWidgets.QApplication.style().standardIcon(
-                QtWidgets.QStyle.SP_DialogApplyButton))
+            QtWidgets.QStyle.SP_DialogApplyButton))
         load.clicked.connect(self._load_clicked)
 
         buttons = LayoutWidget()
@@ -108,21 +47,7 @@ class _ArgumentEditor(QtWidgets.QTreeWidget):
         buttons.addWidget(load, 1, 2)
         for i, s in enumerate((1, 0, 0, 1)):
             buttons.layout.setColumnStretch(i, s)
-        self.setItemWidget(widget_item, 1, buttons)
-
-    def _get_group(self, name):
-        if name in self._groups:
-            return self._groups[name]
-        group = QtWidgets.QTreeWidgetItem([name])
-        for col in range(3):
-            group.setBackground(col, self.palette().mid())
-            group.setForeground(col, self.palette().brightText())
-            font = group.font(col)
-            font.setBold(True)
-            group.setFont(col, font)
-        self.addTopLevelItem(group)
-        self._groups[name] = group
-        return group
+        self.setItemWidget(self.bottom_item, 1, buttons)
 
     def _load_clicked(self):
         asyncio.ensure_future(self._dock.load_hdf5_task())
@@ -130,8 +55,8 @@ class _ArgumentEditor(QtWidgets.QTreeWidget):
     def _recompute_arguments_clicked(self):
         asyncio.ensure_future(self._dock._recompute_arguments())
 
-    def _recompute_argument_clicked(self, name):
-        asyncio.ensure_future(self._recompute_argument(name))
+    def reset_entry(self, key):
+        asyncio.ensure_future(self._recompute_argument(key))
 
     async def _recompute_argument(self, name):
         try:
@@ -146,29 +71,7 @@ class _ArgumentEditor(QtWidgets.QTreeWidget):
         state = procdesc_to_entry(procdesc).default_state(procdesc)
         argument["desc"] = procdesc
         argument["state"] = state
-
-        widgets = self._arg_to_widgets[name]
-
-        widgets["entry"].deleteLater()
-        widgets["entry"] = procdesc_to_entry(procdesc)(argument)
-        widgets["fix_layout"] = LayoutWidget()
-        widgets["fix_layout"].addWidget(widgets["entry"])
-        self.setItemWidget(widgets["widget_item"], 1, widgets["fix_layout"])
-        self.updateGeometries()
-
-    def save_state(self):
-        expanded = []
-        for k, v in self._groups.items():
-            if v.isExpanded():
-                expanded.append(k)
-        return {"expanded": expanded}
-
-    def restore_state(self, state):
-        for e in state["expanded"]:
-            try:
-                self._groups[e].setExpanded(True)
-            except KeyError:
-                pass
+        self.update_argument(name, argument)
 
 
 log_levels = ["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]
@@ -277,8 +180,8 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
         state = self.argeditor.save_state()
         self.argeditor.deleteLater()
         self.argeditor = _ArgumentEditor(self)
-        self.argeditor.restore_state(state)
         self.layout.addWidget(self.argeditor, 0, 0, 1, 5)
+        self.argeditor.restore_state(state)
 
     async def load_hdf5_task(self, filename=None):
         if filename is None:
@@ -466,6 +369,8 @@ class ExperimentsArea(QtWidgets.QMdiArea):
     def initialize_submission_arguments(self, arginfo):
         arguments = OrderedDict()
         for name, (procdesc, group, tooltip) in arginfo.items():
+            if procdesc["ty"] == "EnumerationValue" and procdesc["quickstyle"]:
+                procdesc["quickstyle"] = False
             state = procdesc_to_entry(procdesc).default_state(procdesc)
             arguments[name] = {
                 "desc": procdesc,
@@ -508,5 +413,9 @@ class ExperimentsArea(QtWidgets.QMdiArea):
         self.open_experiments.append(dock)
         return dock
 
+    def set_argument_value(self, expurl, name, value):
+        logger.warning("Unable to set argument '%s', dropping change. "
+                       "'set_argument_value' not supported in browser.", name)
+
     def on_dock_closed(self, dock):
         self.open_experiments.remove(dock)

artiq/build_soc.py

@@ -71,7 +71,6 @@ def build_artiq_soc(soc, argdict):
     if not soc.config["DRTIO_ROLE"] == "satellite":
         builder.add_software_package("runtime", os.path.join(firmware_dir, "runtime"))
     else:
-        # Assume DRTIO satellite.
         builder.add_software_package("satman", os.path.join(firmware_dir, "satman"))
     try:
         builder.build()

artiq/coredevice/ad53xx.py

@@ -243,7 +243,7 @@ class AD53xx:
     def write_gain_mu(self, channel: int32, gain: int32 = 0xffff):
         """Program the gain register for a DAC channel.
 
-        The DAC output is not updated until LDAC is pulsed (see :meth load:).
+        The DAC output is not updated until LDAC is pulsed (see :meth:`load`).
         This method advances the timeline by the duration of one SPI transfer.
 
         :param gain: 16-bit gain register value (default: 0xffff)
@@ -255,7 +255,7 @@ class AD53xx:
     def write_offset_mu(self, channel: int32, offset: int32 = 0x8000):
         """Program the offset register for a DAC channel.
 
-        The DAC output is not updated until LDAC is pulsed (see :meth load:).
+        The DAC output is not updated until LDAC is pulsed (see :meth:`load`).
         This method advances the timeline by the duration of one SPI transfer.
 
         :param offset: 16-bit offset register value (default: 0x8000)
@@ -268,7 +268,7 @@ class AD53xx:
         """Program the DAC offset voltage for a channel.
 
         An offset of +V can be used to trim out a DAC offset error of -V.
-        The DAC output is not updated until LDAC is pulsed (see :meth load:).
+        The DAC output is not updated until LDAC is pulsed (see :meth:`load`).
         This method advances the timeline by the duration of one SPI transfer.
 
         :param voltage: the offset voltage
@@ -280,7 +280,7 @@ class AD53xx:
     def write_dac_mu(self, channel: int32, value: int32):
         """Program the DAC input register for a channel.
 
-        The DAC output is not updated until LDAC is pulsed (see :meth load:).
+        The DAC output is not updated until LDAC is pulsed (see :meth:`load`).
         This method advances the timeline by the duration of one SPI transfer.
         """
         self.bus.write(
@@ -290,7 +290,7 @@ class AD53xx:
     def write_dac(self, channel: int32, voltage: float):
         """Program the DAC output voltage for a channel.
 
-        The DAC output is not updated until LDAC is pulsed (see :meth load:).
+        The DAC output is not updated until LDAC is pulsed (see :meth:`load`).
         This method advances the timeline by the duration of one SPI transfer.
         """
         self.write_dac_mu(channel, voltage_to_mu(voltage, self.offset_dacs,
@@ -323,7 +323,7 @@ class AD53xx:
 
         If no LDAC device was defined, the LDAC pulse is skipped.
 
-        See :meth load:.
+        See :meth:`load`.
 
         :param values: list of DAC values to program
         :param channels: list of DAC channels to program. If not specified,
@@ -366,7 +366,7 @@ class AD53xx:
         """Two-point calibration of a DAC channel.
 
         Programs the offset and gain register to trim out DAC errors. Does not
-        take effect until LDAC is pulsed (see :meth load:).
+        take effect until LDAC is pulsed (see :meth:`load`).
 
         Calibration consists of measuring the DAC output voltage for a channel
         with the DAC set to zero-scale (0x0000) and full-scale (0xffff).

artiq/coredevice/ad9910.py

@@ -1024,7 +1024,7 @@ class AD9910:
         """
         if not self.cpld.sync_div:
             raise ValueError("parent cpld does not drive SYNC")
-        search_span = 31
+        search_span = 13
         # FIXME https://github.com/sinara-hw/Urukul/issues/16
         # should both be 2-4 once kasli sync_in jitter is identified
         min_window = 0

artiq/coredevice/adf5356.py

@@ -94,10 +94,11 @@ class ADF5356:
 
         :param blind: Do not attempt to verify presence.
         """
+        self.sync()
         if not blind:
             # MUXOUT = VDD
             self.regs[4] = ADF5356_REG4_MUXOUT_UPDATE(self.regs[4], 1)
-            self.sync()
+            self.write(self.regs[4])
             self.core.delay(1000. * us)
             if not self.read_muxout():
                 raise ValueError("MUXOUT not high")
@@ -105,7 +106,7 @@ class ADF5356:
 
             # MUXOUT = DGND
             self.regs[4] = ADF5356_REG4_MUXOUT_UPDATE(self.regs[4], 2)
-            self.sync()
+            self.write(self.regs[4])
             self.core.delay(1000. * us)
             if self.read_muxout():
                 raise ValueError("MUXOUT not low")
@@ -113,8 +114,7 @@ class ADF5356:
 
             # MUXOUT = digital lock-detect
             self.regs[4] = ADF5356_REG4_MUXOUT_UPDATE(self.regs[4], 6)
-        else:
-            self.sync()
+            self.write(self.regs[4])
 
     @kernel
     def set_att(self, att: float):

artiq/coredevice/almazny.py

@@ -130,11 +130,6 @@ class AlmaznyLegacy:
         )
         self.core.delay(100. * us)
 
-    @kernel
-    def _update_all_registers(self):
-        for i in range(4):
-            self._update_register(i)
-
 
 @nac3
 class AlmaznyChannel:

artiq/coredevice/comm_analyzer.py

@@ -2,15 +2,22 @@ from operator import itemgetter
 from collections import namedtuple
 from itertools import count
 from contextlib import contextmanager
+from sipyco import keepalive
+import asyncio
 from enum import Enum
 import struct
 import logging
 import socket
+import math
 
 
 logger = logging.getLogger(__name__)
 
 
+DEFAULT_REF_PERIOD = 1e-9
+ANALYZER_MAGIC = b"ARTIQ Analyzer Proxy\n"
+
+
 class MessageType(Enum):
     output = 0b00
     input = 0b01
@@ -34,6 +41,13 @@ class ExceptionType(Enum):
     i_overflow = 0b100001
 
 
+class WaveformType(Enum):
+    ANALOG = 0
+    BIT = 1
+    VECTOR = 2
+    LOG = 3
+
+
 def get_analyzer_dump(host, port=1382):
     sock = socket.create_connection((host, port))
     try:
@@ -104,6 +118,8 @@ def decode_dump(data):
     (sent_bytes, total_byte_count,
      error_occurred, log_channel, dds_onehot_sel) = parts
 
+    logger.debug("analyzer dump has length %d", sent_bytes)
+
     expected_len = sent_bytes + 15
     if expected_len != len(data):
         raise ValueError("analyzer dump has incorrect length "
@@ -115,15 +131,83 @@ def decode_dump(data):
     if total_byte_count > sent_bytes:
         logger.info("analyzer ring buffer has wrapped %d times",
                     total_byte_count//sent_bytes)
+    if sent_bytes == 0:
+        logger.warning("analyzer dump is empty")
 
     position = 15
     messages = []
     for _ in range(sent_bytes//32):
         messages.append(decode_message(data[position:position+32]))
         position += 32
+
+    if len(messages) == 1 and isinstance(messages[0], StoppedMessage):
+        logger.warning("analyzer dump is empty aside from stop message")
+
     return DecodedDump(log_channel, bool(dds_onehot_sel), messages)
 
 
+# simplified from sipyco broadcast Receiver
+class AnalyzerProxyReceiver:
+    def __init__(self, receive_cb, disconnect_cb=None):
+        self.receive_cb = receive_cb
+        self.disconnect_cb = disconnect_cb
+
+    async def connect(self, host, port):
+        self.reader, self.writer = \
+            await keepalive.async_open_connection(host, port)
+        try:
+            line = await self.reader.readline()
+            assert line == ANALYZER_MAGIC
+            self.receive_task = asyncio.create_task(self._receive_cr())
+        except:
+            self.writer.close()
+            del self.reader
+            del self.writer
+            raise
+
+    async def close(self):
+        self.disconnect_cb = None
+        try:
+            self.receive_task.cancel()
+            try:
+                await self.receive_task
+            except asyncio.CancelledError:
+                pass
+        finally:
+            self.writer.close()
+            del self.reader
+            del self.writer
+
+    async def _receive_cr(self):
+        try:
+            while True:
+                endian_byte = await self.reader.read(1)
+                if endian_byte == b"E":
+                    endian = '>'
+                elif endian_byte == b"e":
+                    endian = '<'
+                elif endian_byte == b"":
+                    # EOF reached, connection lost
+                    return
+                else:
+                    raise ValueError
+                payload_length_word = await self.reader.readexactly(4)
+                payload_length = struct.unpack(endian + "I", payload_length_word)[0]
+                if payload_length > 10 * 512 * 1024:
+                    # 10x buffer size of firmware
+                    raise ValueError
+
+                # The remaining header length is 11 bytes.
+                remaining_data = await self.reader.readexactly(payload_length + 11)
+                data = endian_byte + payload_length_word + remaining_data
+                self.receive_cb(data)
+        except Exception:
+            logger.error("analyzer receiver connection terminating with exception", exc_info=True)
+        finally:
+            if self.disconnect_cb is not None:
+                self.disconnect_cb()
+
+
 def vcd_codes():
     codechars = [chr(i) for i in range(33, 127)]
     for n in count():
@@ -150,38 +234,129 @@ class VCDChannel:
         integer_cast = struct.unpack(">Q", struct.pack(">d", x))[0]
         self.set_value("{:064b}".format(integer_cast))
 
+    def set_log(self, log_message):
+        value = ""
+        for c in log_message:
+            value += "{:08b}".format(ord(c))
+        self.set_value(value)
+
 
 class VCDManager:
     def __init__(self, fileobj):
         self.out = fileobj
         self.codes = vcd_codes()
         self.current_time = None
+        self.start_time = 0
 
     def set_timescale_ps(self, timescale):
         self.out.write("$timescale {}ps $end\n".format(round(timescale)))
 
-    def get_channel(self, name, width):
+    def get_channel(self, name, width, ty, precision=0, unit=""):
         code = next(self.codes)
         self.out.write("$var wire {width} {code} {name} $end\n"
                        .format(name=name, code=code, width=width))
         return VCDChannel(self.out, code)
 
     @contextmanager
-    def scope(self, name):
-        self.out.write("$scope module {} $end\n".format(name))
+    def scope(self, scope, name):
+        self.out.write("$scope module {}/{} $end\n".format(scope, name))
         yield
         self.out.write("$upscope $end\n")
 
     def set_time(self, time):
+        time -= self.start_time
         if time != self.current_time:
             self.out.write("#{}\n".format(time))
             self.current_time = time
 
+    def set_start_time(self, time):
+        self.start_time = time
+
+    def set_end_time(self, time):
+        pass
+
+
+class WaveformManager:
+    def __init__(self):
+        self.current_time = 0
+        self.start_time = 0
+        self.end_time = 0
+        self.channels = list()
+        self.current_scope = ""
+        self.trace = {"timescale": 1, "stopped_x": None, "logs": dict(), "data": dict()}
+
+    def set_timescale_ps(self, timescale):
+        self.trace["timescale"] = int(timescale)
+
+    def get_channel(self, name, width, ty, precision=0, unit=""):
+        if ty == WaveformType.LOG:
+            self.trace["logs"][self.current_scope + name] = (ty, width, precision, unit)
+        data = self.trace["data"][self.current_scope + name] = list()
+        channel = WaveformChannel(data, self.current_time)
+        self.channels.append(channel)
+        return channel
+
+    @contextmanager
+    def scope(self, scope, name):
+        old_scope = self.current_scope
+        self.current_scope = scope + "/"
+        yield
+        self.current_scope = old_scope
+
+    def set_time(self, time):
+        time -= self.start_time
+        for channel in self.channels:
+            channel.set_time(time)
+
+    def set_start_time(self, time):
+        self.start_time = time
+        if self.trace["stopped_x"] is not None:
+            self.trace["stopped_x"] = self.end_time - self.start_time
+
+    def set_end_time(self, time):
+        self.end_time = time
+        self.trace["stopped_x"] = self.end_time - self.start_time
+
+
+class WaveformChannel:
+    def __init__(self, data, current_time):
+        self.data = data
+        self.current_time = current_time
+
+    def set_value(self, value):
+        self.data.append((self.current_time, value))
+
+    def set_value_double(self, x):
+        self.data.append((self.current_time, x))
+
+    def set_time(self, time):
+        self.current_time = time
+
+    def set_log(self, log_message):
+        self.data.append((self.current_time, log_message))
+
+
+class ChannelSignatureManager:
+    def __init__(self):
+        self.current_scope = ""
+        self.channels = dict()
+
+    def get_channel(self, name, width, ty, precision=0, unit=""):
+        self.channels[self.current_scope + name] = (ty, width, precision, unit)
+        return None
+
+    @contextmanager
+    def scope(self, scope, name):
+        old_scope = self.current_scope
+        self.current_scope = scope + "/"
+        yield
+        self.current_scope = old_scope
+
 
 class TTLHandler:
-    def __init__(self, vcd_manager, name):
+    def __init__(self, manager, name):
         self.name = name
-        self.channel_value = vcd_manager.get_channel("ttl/" + name, 1)
+        self.channel_value = manager.get_channel("ttl/" + name, 1, ty=WaveformType.BIT)
         self.last_value = "X"
         self.oe = True
 
@@ -206,11 +381,12 @@ class TTLHandler:
 
 
 class TTLClockGenHandler:
-    def __init__(self, vcd_manager, name, ref_period):
+    def __init__(self, manager, name, ref_period):
         self.name = name
         self.ref_period = ref_period
-        self.channel_frequency = vcd_manager.get_channel(
-            "ttl_clkgen/" + name, 64)
+        precision = max(0, math.ceil(math.log10(2**24 * ref_period) + 6))
+        self.channel_frequency = manager.get_channel(
+            "ttl_clkgen/" + name, 64, ty=WaveformType.ANALOG, precision=precision, unit="MHz")
 
     def process_message(self, message):
         if isinstance(message, OutputMessage):
@@ -221,8 +397,8 @@ class TTLClockGenHandler:
 
 
 class DDSHandler:
-    def __init__(self, vcd_manager, onehot_sel, sysclk):
-        self.vcd_manager = vcd_manager
+    def __init__(self, manager, onehot_sel, sysclk):
+        self.manager = manager
         self.onehot_sel = onehot_sel
         self.sysclk = sysclk
 
@@ -231,11 +407,18 @@ class DDSHandler:
 
     def add_dds_channel(self, name, dds_channel_nr):
         dds_channel = dict()
-        with self.vcd_manager.scope("dds/{}".format(name)):
+        frequency_precision = max(0, math.ceil(math.log10(2**32 / self.sysclk) + 6))
+        phase_precision = max(0, math.ceil(math.log10(2**16)))
+        with self.manager.scope("dds", name):
             dds_channel["vcd_frequency"] = \
-                self.vcd_manager.get_channel(name + "/frequency", 64)
+                self.manager.get_channel(name + "/frequency", 64, 
+                                         ty=WaveformType.ANALOG, 
+                                         precision=frequency_precision,
+                                         unit="MHz")
             dds_channel["vcd_phase"] = \
-                self.vcd_manager.get_channel(name + "/phase", 64)
+                self.manager.get_channel(name + "/phase", 64, 
+                                         ty=WaveformType.ANALOG,
+                                         precision=phase_precision)
         dds_channel["ftw"] = [None, None]
         dds_channel["pow"] = None
         self.dds_channels[dds_channel_nr] = dds_channel
@@ -285,10 +468,10 @@ class DDSHandler:
 
 
 class WishboneHandler:
-    def __init__(self, vcd_manager, name, read_bit):
+    def __init__(self, manager, name, read_bit):
         self._reads = []
         self._read_bit = read_bit
-        self.stb = vcd_manager.get_channel("{}/{}".format(name, "stb"), 1)
+        self.stb = manager.get_channel(name + "/stb", 1, ty=WaveformType.BIT)
 
     def process_message(self, message):
         self.stb.set_value("1")
@@ -318,16 +501,17 @@ class WishboneHandler:
 
 
 class SPIMasterHandler(WishboneHandler):
-    def __init__(self, vcd_manager, name):
+    def __init__(self, manager, name):
         self.channels = {}
-        with vcd_manager.scope("spi/{}".format(name)):
-            super().__init__(vcd_manager, name, read_bit=0b100)
+        self.scope = "spi"
+        with manager.scope("spi", name):
+            super().__init__(manager, name, read_bit=0b100)
             for reg_name, reg_width in [
                     ("config", 32), ("chip_select", 16),
                     ("write_length", 8), ("read_length", 8),
                     ("write", 32), ("read", 32)]:
-                self.channels[reg_name] = vcd_manager.get_channel(
-                        "{}/{}".format(name, reg_name), reg_width)
+                self.channels[reg_name] = manager.get_channel(
+                    "{}/{}".format(name, reg_name), reg_width, ty=WaveformType.VECTOR)
 
     def process_write(self, address, data):
         if address == 0:
@@ -352,11 +536,12 @@ class SPIMasterHandler(WishboneHandler):
 
 
 class SPIMaster2Handler(WishboneHandler):
-    def __init__(self, vcd_manager, name):
+    def __init__(self, manager, name):
         self._reads = []
         self.channels = {}
-        with vcd_manager.scope("spi2/{}".format(name)):
-            self.stb = vcd_manager.get_channel("{}/{}".format(name, "stb"), 1)
+        self.scope = "spi2"
+        with manager.scope("spi2", name):
+            self.stb = manager.get_channel(name + "/stb", 1, ty=WaveformType.BIT)
             for reg_name, reg_width in [
                     ("flags", 8),
                     ("length", 5),
@@ -364,8 +549,8 @@ class SPIMaster2Handler(WishboneHandler):
                     ("chip_select", 8),
                     ("write", 32),
                     ("read", 32)]:
-                self.channels[reg_name] = vcd_manager.get_channel(
-                        "{}/{}".format(name, reg_name), reg_width)
+                self.channels[reg_name] = manager.get_channel(
+                    "{}/{}".format(name, reg_name), reg_width, ty=WaveformType.VECTOR)
 
     def process_message(self, message):
         self.stb.set_value("1")
@@ -413,11 +598,12 @@ def _extract_log_chars(data):
 
 
 class LogHandler:
-    def __init__(self, vcd_manager, vcd_log_channels):
-        self.vcd_channels = dict()
-        for name, maxlength in vcd_log_channels.items():
-            self.vcd_channels[name] = vcd_manager.get_channel("log/" + name,
-                                                              maxlength*8)
+    def __init__(self, manager, log_channels):
+        self.channels = dict()
+        for name, maxlength in log_channels.items():
+            self.channels[name] = manager.get_channel("logs/" + name,
+                                                      maxlength * 8,
+                                                      ty=WaveformType.LOG)
         self.current_entry = ""
 
     def process_message(self, message):
@@ -425,15 +611,12 @@ class LogHandler:
             self.current_entry += _extract_log_chars(message.data)
             if len(self.current_entry) > 1 and self.current_entry[-1] == "\x1D":
                 channel_name, log_message = self.current_entry[:-1].split("\x1E", maxsplit=1)
-                vcd_value = ""
-                for c in log_message:
-                    vcd_value += "{:08b}".format(ord(c))
-                self.vcd_channels[channel_name].set_value(vcd_value)
+                self.channels[channel_name].set_log(log_message)
                 self.current_entry = ""
 
 
-def get_vcd_log_channels(log_channel, messages):
-    vcd_log_channels = dict()
+def get_log_channels(log_channel, messages):
+    log_channels = dict()
     log_entry = ""
     for message in messages:
         if (isinstance(message, OutputMessage)
@@ -442,13 +625,13 @@ def get_vcd_log_channels(log_channel, messages):
             if len(log_entry) > 1 and log_entry[-1] == "\x1D":
                 channel_name, log_message = log_entry[:-1].split("\x1E", maxsplit=1)
                 l = len(log_message)
-                if channel_name in vcd_log_channels:
-                    if vcd_log_channels[channel_name] < l:
-                        vcd_log_channels[channel_name] = l
+                if channel_name in log_channels:
+                    if log_channels[channel_name] < l:
+                        log_channels[channel_name] = l
                 else:
-                    vcd_log_channels[channel_name] = l
+                    log_channels[channel_name] = l
                 log_entry = ""
-    return vcd_log_channels
+    return log_channels
 
 
 def get_single_device_argument(devices, module, cls, argument):
@@ -475,7 +658,7 @@ def get_dds_sysclk(devices):
                                       ("AD9914",), "sysclk")
 
 
-def create_channel_handlers(vcd_manager, devices, ref_period,
+def create_channel_handlers(manager, devices, ref_period,
                             dds_sysclk, dds_onehot_sel):
     channel_handlers = dict()
     for name, desc in sorted(devices.items(), key=itemgetter(0)):
@@ -483,11 +666,11 @@ def create_channel_handlers(vcd_manager, devices, ref_period,
             if (desc["module"] == "artiq.coredevice.ttl"
                     and desc["class"] in {"TTLOut", "TTLInOut"}):
                 channel = desc["arguments"]["channel"]
-                channel_handlers[channel] = TTLHandler(vcd_manager, name)
+                channel_handlers[channel] = TTLHandler(manager, name)
             if (desc["module"] == "artiq.coredevice.ttl"
                     and desc["class"] == "TTLClockGen"):
                 channel = desc["arguments"]["channel"]
-                channel_handlers[channel] = TTLClockGenHandler(vcd_manager, name, ref_period)
+                channel_handlers[channel] = TTLClockGenHandler(manager, name, ref_period)
             if (desc["module"] == "artiq.coredevice.ad9914"
                     and desc["class"] == "AD9914"):
                 dds_bus_channel = desc["arguments"]["bus_channel"]
@@ -495,37 +678,60 @@ def create_channel_handlers(vcd_manager, devices, ref_period,
                 if dds_bus_channel in channel_handlers:
                     dds_handler = channel_handlers[dds_bus_channel]
                 else:
-                    dds_handler = DDSHandler(vcd_manager, dds_onehot_sel, dds_sysclk)
+                    dds_handler = DDSHandler(manager, dds_onehot_sel, dds_sysclk)
                     channel_handlers[dds_bus_channel] = dds_handler
                 dds_handler.add_dds_channel(name, dds_channel)
             if (desc["module"] == "artiq.coredevice.spi2" and
                     desc["class"] == "SPIMaster"):
                 channel = desc["arguments"]["channel"]
                 channel_handlers[channel] = SPIMaster2Handler(
-                        vcd_manager, name)
+                        manager, name)
     return channel_handlers
 
 
+def get_channel_list(devices):
+    manager = ChannelSignatureManager()
+    create_channel_handlers(manager, devices, 1e-9, 3e9, False)
+    ref_period = get_ref_period(devices)
+    if ref_period is None:
+        ref_period = DEFAULT_REF_PERIOD
+    precision = max(0, math.ceil(math.log10(1 / ref_period) - 6))
+    manager.get_channel("rtio_slack", 64, ty=WaveformType.ANALOG, precision=precision, unit="us")
+    return manager.channels
+
+
 def get_message_time(message):
     return getattr(message, "timestamp", message.rtio_counter)
 
 
 def decoded_dump_to_vcd(fileobj, devices, dump, uniform_interval=False):
     vcd_manager = VCDManager(fileobj)
+    decoded_dump_to_target(vcd_manager, devices, dump, uniform_interval)
+
+
+def decoded_dump_to_waveform_data(devices, dump, uniform_interval=False):
+    manager = WaveformManager()
+    decoded_dump_to_target(manager, devices, dump, uniform_interval)
+    return manager.trace
+
+
+def decoded_dump_to_target(manager, devices, dump, uniform_interval):
     ref_period = get_ref_period(devices)
 
-    if ref_period is not None:
-        if not uniform_interval:
-            vcd_manager.set_timescale_ps(ref_period*1e12)
-    else:
+    if ref_period is None:
         logger.warning("unable to determine core device ref_period")
-        ref_period = 1e-9  # guess
+        ref_period = DEFAULT_REF_PERIOD
+    if not uniform_interval:
+        manager.set_timescale_ps(ref_period*1e12)
     dds_sysclk = get_dds_sysclk(devices)
     if dds_sysclk is None:
         logger.warning("unable to determine DDS sysclk")
         dds_sysclk = 3e9  # guess
 
     if isinstance(dump.messages[-1], StoppedMessage):
+        m = dump.messages[-1]
+        end_time = get_message_time(m)
+        manager.set_end_time(end_time)
         messages = dump.messages[:-1]
     else:
         logger.warning("StoppedMessage missing")
@@ -533,38 +739,39 @@ def decoded_dump_to_vcd(fileobj, devices, dump, uniform_interval=False):
     messages = sorted(messages, key=get_message_time)
 
     channel_handlers = create_channel_handlers(
-        vcd_manager, devices, ref_period,
+        manager, devices, ref_period,
         dds_sysclk, dump.dds_onehot_sel)
-    vcd_log_channels = get_vcd_log_channels(dump.log_channel, messages)
+    log_channels = get_log_channels(dump.log_channel, messages)
     channel_handlers[dump.log_channel] = LogHandler(
-        vcd_manager, vcd_log_channels)
+        manager, log_channels)
     if uniform_interval:
         # RTIO event timestamp in machine units
-        timestamp = vcd_manager.get_channel("timestamp", 64)
+        timestamp = manager.get_channel("timestamp", 64, ty=WaveformType.VECTOR)
         # RTIO time interval between this and the next timed event
         # in SI seconds
-        interval = vcd_manager.get_channel("interval", 64)
-    slack = vcd_manager.get_channel("rtio_slack", 64)
+        interval = manager.get_channel("interval", 64, ty=WaveformType.ANALOG)
+    slack = manager.get_channel("rtio_slack", 64, ty=WaveformType.ANALOG)
 
-    vcd_manager.set_time(0)
+    manager.set_time(0)
     start_time = 0
     for m in messages:
         start_time = get_message_time(m)
         if start_time:
             break
-
-    t0 = 0
+    if not uniform_interval:
+        manager.set_start_time(start_time)
+    t0 = start_time
     for i, message in enumerate(messages):
         if message.channel in channel_handlers:
-            t = get_message_time(message) - start_time
+            t = get_message_time(message)
             if t >= 0:
                 if uniform_interval:
                     interval.set_value_double((t - t0)*ref_period)
-                    vcd_manager.set_time(i)
+                    manager.set_time(i)
                     timestamp.set_value("{:064b}".format(t))
                     t0 = t
                 else:
-                    vcd_manager.set_time(t)
+                    manager.set_time(t)
             channel_handlers[message.channel].process_message(message)
             if isinstance(message, OutputMessage):
                 slack.set_value_double(

artiq/coredevice/comm_kernel.py

@@ -28,6 +28,8 @@ class Request(Enum):
     RPCReply = 7
     RPCException = 8
 
+    SubkernelUpload = 9
+
 
 class Reply(Enum):
     SystemInfo = 2
@@ -316,6 +318,7 @@ class CommKernel:
         self.unpack_float64 = struct.Struct(self.endian + "d").unpack
 
         self.pack_header = struct.Struct(self.endian + "lB").pack
+        self.pack_int8 = struct.Struct(self.endian + "B").pack
         self.pack_int32 = struct.Struct(self.endian + "l").pack
         self.pack_int64 = struct.Struct(self.endian + "q").pack
         self.pack_float64 = struct.Struct(self.endian + "d").pack
@@ -430,7 +433,7 @@ class CommKernel:
         self._write(chunk)
 
     def _write_int8(self, value):
-        self._write(value)
+        self._write(self.pack_int8(value))
 
     def _write_int32(self, value):
         self._write(self.pack_int32(value))
@@ -490,6 +493,19 @@ class CommKernel:
         else:
             self._read_expect(Reply.LoadCompleted)
 
+    def upload_subkernel(self, kernel_library, id, destination):
+        self._write_header(Request.SubkernelUpload)
+        self._write_int32(id)
+        self._write_int8(destination)
+        self._write_bytes(kernel_library)
+        self._flush()
+
+        self._read_header()
+        if self._read_type == Reply.LoadFailed:
+            raise LoadError(self._read_string())
+        else:
+            self._read_expect(Reply.LoadCompleted)
+
     def run(self):
         self._write_empty(Request.RunKernel)
         self._flush()
@@ -557,12 +573,12 @@ class CommKernel:
             self._write_bool(value)
         elif tag == "i":
             check(isinstance(value, (int, numpy.int32)) and
-                  (-2**31 <= value < 2**31),
+                  (-2**31 <= value <= 2**31-1),
                   lambda: "32-bit int")
             self._write_int32(value)
         elif tag == "I":
             check(isinstance(value, (int, numpy.int32, numpy.int64)) and
-                  (-2**63 <= value < 2**63),
+                  (-2**63 <= value <= 2**63-1),
                   lambda: "64-bit int")
             self._write_int64(value)
         elif tag == "f":
@@ -571,8 +587,8 @@ class CommKernel:
             self._write_float64(value)
         elif tag == "F":
             check(isinstance(value, Fraction) and
-                  (-2**63 <= value.numerator < 2**63) and
-                  (-2**63 <= value.denominator < 2**63),
+                  (-2**63 <= value.numerator <= 2**63-1) and
+                  (-2**63 <= value.denominator <= 2**63-1),
                   lambda: "64-bit Fraction")
             self._write_int64(value.numerator)
             self._write_int64(value.denominator)

artiq/coredevice/comm_moninj.py

@@ -94,9 +94,7 @@ class CommMonInj:
                     self.injection_status_cb(channel, override, value)
                 else:
                     raise ValueError("Unknown packet type", ty)
-        except asyncio.CancelledError:
-            raise
-        except:
+        except Exception:
             logger.error("Moninj connection terminating with exception", exc_info=True)
         finally:
             if self.disconnect_cb is not None:

artiq/coredevice/core.py

@@ -47,26 +47,45 @@ class Core:
     :param ref_multiplier: ratio between the RTIO fine timestamp frequency
         and the RTIO coarse timestamp frequency (e.g. SERDES multiplication
         factor).
+    :param analyzer_proxy: name of the core device analyzer proxy to trigger
+        (optional).
+    :param analyze_at_run_end: automatically trigger the core device analyzer
+        proxy after the Experiment's run stage finishes.
     """
     ref_period: KernelInvariant[float]
     ref_multiplier: KernelInvariant[int32]
     coarse_ref_period: KernelInvariant[float]
 
-    def __init__(self, dmgr, host, ref_period, ref_multiplier=8, target="rv32g"):
+    def __init__(self, dmgr,
+                 host, ref_period,
+                 analyzer_proxy=None, analyze_at_run_end=False,
+                 ref_multiplier=8,
+                 target="rv32g", satellite_cpu_targets={}):
         self.ref_period = ref_period
         self.ref_multiplier = ref_multiplier
+        
         self.coarse_ref_period = ref_period*ref_multiplier
         if host is None:
             self.comm = CommKernelDummy()
         else:
             self.comm = CommKernel(host)
+
         self.first_run = True
         self.dmgr = dmgr
         self.core = self
         self.comm.core = self
+
         self.target = target
         self.analyzed = False
         self.compiler = nac3artiq.NAC3(target, artiq_builtins)
+        
+        self.analyzer_proxy_name = analyzer_proxy
+        self.analyze_at_run_end = analyze_at_run_end
+        self.analyzer_proxy = None
+
+    def notify_run_end(self):
+        if self.analyze_at_run_end:
+            self.trigger_analyzer_proxy()
 
     def close(self):
         self.comm.close()
@@ -95,6 +114,7 @@ class Core:
     def run(self, function, args, kwargs):
         embedding_map = EmbeddingMap()
         kernel_library = self.compile(function, args, kwargs, embedding_map)
+
         if self.first_run:
             self.comm.check_system_info()
             self.first_run = False
@@ -175,6 +195,24 @@ class Core:
         min_now = rtio_get_counter() + int64(125000)
         if now_mu() < min_now:
             at_mu(min_now)
+    
+    def trigger_analyzer_proxy(self):
+        """Causes the core analyzer proxy to retrieve a dump from the device,
+        and distribute it to all connected clients (typically dashboards).
+
+        Returns only after the dump has been retrieved from the device.
+
+        Raises IOError if no analyzer proxy has been configured, or if the
+        analyzer proxy fails. In the latter case, more details would be
+        available in the proxy log.
+        """
+        if self.analyzer_proxy is None:
+            if self.analyzer_proxy_name is not None:
+                self.analyzer_proxy = self.dmgr.get(self.analyzer_proxy_name)
+        if self.analyzer_proxy is None:
+            raise IOError("No analyzer proxy configured")
+        else:
+            self.analyzer_proxy.trigger()
 
 
 class RunTool:

artiq/coredevice/coredevice_generic.schema.json

@@ -49,6 +49,10 @@
             "default": 125e6,
             "description": "RTIO frequency"
         },
+        "enable_wrpll": {
+            "type": "boolean",
+            "default": false
+        },
         "core_addr": {
             "type": "string",
             "format": "ipv4",
@@ -308,8 +312,7 @@
                         "clk_div": {
                             "type": "integer",
                             "minimum": 0,
-                            "maximum": 3,
-                            "default": 0
+                            "maximum": 3
                         },
                         "pll_n": {
                             "type": "integer"
@@ -582,8 +585,11 @@
                             "maxItems": 2
                         },
                         "drtio_destination": {
-                            "type": "integer",
-                            "default": 4
+                            "type": "integer"
+                        },
+                        "hw_rev": {
+                            "type": "string",
+                            "enum": ["v1.0", "v1.1"]
                         }
                     },
                     "required": ["ports"]

artiq/coredevice/exceptions.py

@@ -44,6 +44,14 @@ class DMAError(Exception):
     artiq_builtin = True
 
 
+@nac3
+class SubkernelError(Exception):
+    """Raised when an operation regarding a subkernel is invalid 
+    or cannot be completed.
+    """
+    artiq_builtin = True
+
+
 @nac3
 class ClockFailure(Exception):
     """Raised when RTIO PLL has lost lock."""

artiq/coredevice/grabber.py

@@ -1,7 +1,7 @@
 from numpy import int32, int64
 
 from artiq.language.core import *
-from artiq.coredevice.rtio import rtio_output, rtio_input_data
+from artiq.coredevice.rtio import rtio_output, rtio_input_timestamped_data
 from artiq.coredevice.core import Core
 
 
@@ -12,6 +12,12 @@ class OutOfSyncException(Exception):
     pass
 
 
+@nac3
+class GrabberTimeoutException(Exception):
+    """Raised when a timeout occurs while attempting to read Grabber RTIO input events."""
+    pass
+
+
 @nac3
 class Grabber:
     """Driver for the Grabber camera interface."""
@@ -86,10 +92,10 @@ class Grabber:
         self.gate_roi(0)
 
     @kernel
-    def input_mu(self, data: list[int32]):
+    def input_mu(self, data: list[int32], timeout_mu: int64 = int64(-1)):
         """
         Retrieves the accumulated values for one frame from the ROI engines.
-        Blocks until values are available.
+        Blocks until values are available or timeout is reached.
 
         The input list must be a list of integers of the same length as there
         are enabled ROI engines. This method replaces the elements of the
@@ -99,15 +105,26 @@ class Grabber:
         If the number of elements in the list does not match the number of
         ROI engines that produced output, an exception will be raised during
         this call or the next.
+        
+        If the timeout is reached before data is available, the exception
+        GrabberTimeoutException is raised.
+
+        :param timeout_mu: Timestamp at which a timeout will occur. Set to -1
+                           (default) to disable timeout. 
         """
         channel = self.channel_base + 1
 
-        sentinel = rtio_input_data(channel)
+        timestamp, sentinel = rtio_input_timestamped_data(timeout_mu, channel)
+        if timestamp == int64(-1):
+            raise GrabberTimeoutException("Timeout before Grabber frame available")
         if sentinel != self.sentinel:
             raise OutOfSyncException()
 
         for i in range(len(data)):
-            roi_output = rtio_input_data(channel)
+            timestamp, roi_output = rtio_input_timestamped_data(timeout_mu, channel)
             if roi_output == self.sentinel:
                 raise OutOfSyncException()
+            if timestamp == int64(-1):
+                raise GrabberTimeoutException(
+                    "Timeout retrieving ROIs (attempting to read more ROIs than enabled?)")
             data[i] = roi_output

artiq/coredevice/kasli_i2c.py

@@ -34,14 +34,14 @@ class KasliEEPROM:
     port: KernelInvariant[int32]
     address: KernelInvariant[int32]
 
-    def __init__(self, dmgr, port, busno=0,
-            core_device="core", sw0_device="i2c_switch0", sw1_device="i2c_switch1"):
+    def __init__(self, dmgr, port, address=0xa0, busno=0,
+                 core_device="core", sw0_device="i2c_switch0", sw1_device="i2c_switch1"):
         self.core = dmgr.get(core_device)
         self.sw0 = dmgr.get(sw0_device)
         self.sw1 = dmgr.get(sw1_device)
         self.busno = busno
         self.port = port_mapping[port]
-        self.address = 0xa0  # i2c 8 bit
+        self.address = address  # i2c 8 bit
 
     @kernel
     def select(self):

artiq/coredevice/sampler.py

@@ -25,7 +25,7 @@ def adc_mu_to_volt(data: int32, gain: int32 = 0, corrected_fs: bool = True) -> f
     :param data: 16 bit signed ADC word
     :param gain: PGIA gain setting (0: 1, ..., 3: 1000)
     :param corrected_fs: use corrected ADC FS reference.
-    Should be True for Samplers' revisions after v2.1. False for v2.1 and earlier.
+        Should be True for Samplers' revisions after v2.1. False for v2.1 and earlier.
     :return: Voltage in Volts
     """
     volt_per_lsb = 0.

artiq/dashboard/applets_ccb.py

@@ -36,7 +36,7 @@ class AppletsCCBDock(applets.AppletsDock):
         ccbp_group_menu.addAction(self.ccbp_group_create)
         actiongroup.addAction(self.ccbp_group_create)
         self.ccbp_group_enable = QtWidgets.QAction("Create and enable/disable applets",
-                                                    self.table)
+                                                   self.table)
         self.ccbp_group_enable.setCheckable(True)
         self.ccbp_group_enable.triggered.connect(lambda: self.set_ccbp("enable"))
         ccbp_group_menu.addAction(self.ccbp_group_enable)

artiq/dashboard/datasets.py

@@ -8,7 +8,6 @@ from sipyco import pyon
 from artiq.tools import scale_from_metadata, short_format, exc_to_warning
 from artiq.gui.tools import LayoutWidget, QRecursiveFilterProxyModel
 from artiq.gui.models import DictSyncTreeSepModel
-from artiq.gui.scientific_spinbox import ScientificSpinBox
 
 
 logger = logging.getLogger(__name__)
@@ -81,8 +80,7 @@ class CreateEditDialog(QtWidgets.QDialog):
             t = value.dtype if value is np.ndarray else type(value)
             if scale != 1 and np.issubdtype(t, np.number):
                 # degenerates to float type
-                value_edit_string = self.value_to_edit_string(
-                        np.float64(value / scale))
+                value_edit_string = self.value_to_edit_string(value / scale)
             self.unit_widget.setText(metadata.get('unit', ''))
             self.scale_widget.setText(str(metadata.get('scale', '')))
             self.precision_widget.setText(str(metadata.get('precision', '')))
@@ -109,11 +107,13 @@ class CreateEditDialog(QtWidgets.QDialog):
         t = value.dtype if value is np.ndarray else type(value)
         if scale != 1 and np.issubdtype(t, np.number):
             # degenerates to float type
-            value = np.float64(value * scale)
+            value = float(value * scale)
         if self.key and self.key != key:
-            asyncio.ensure_future(exc_to_warning(rename(self.key, key, value, metadata, persist, self.dataset_ctl)))
+            asyncio.ensure_future(exc_to_warning(rename(self.key, key, value, metadata, persist,
+                                                        self.dataset_ctl)))
         else:
-            asyncio.ensure_future(exc_to_warning(self.dataset_ctl.set(key, value, metadata=metadata, persist=persist)))
+            asyncio.ensure_future(exc_to_warning(self.dataset_ctl.set(key, value, metadata=metadata,
+                                                                      persist=persist)))
         self.key = key
         QtWidgets.QDialog.accept(self)
 
@@ -163,7 +163,7 @@ class CreateEditDialog(QtWidgets.QDialog):
 
 
 class Model(DictSyncTreeSepModel):
-    def __init__(self,  init):
+    def __init__(self, init):
         DictSyncTreeSepModel.__init__(self, ".",
                                       ["Dataset", "Persistent", "Value"],
                                       init)

artiq/dashboard/experiments.py

@@ -9,10 +9,10 @@ import h5py
 
 from sipyco import pyon
 
-from artiq.gui.entries import procdesc_to_entry, ScanEntry
+from artiq.gui.entries import procdesc_to_entry, EntryTreeWidget
 from artiq.gui.fuzzy_select import FuzzySelectWidget
-from artiq.gui.tools import (LayoutWidget, WheelFilter, 
-                             log_level_to_name, get_open_file_name)
+from artiq.gui.tools import (LayoutWidget, log_level_to_name, get_open_file_name)
+from artiq.tools import parse_devarg_override, unparse_devarg_override
 
 
 logger = logging.getLogger(__name__)
@@ -24,99 +24,23 @@ logger = logging.getLogger(__name__)
 # 2. file:<class name>@<file name>
 
 
-class _ArgumentEditor(QtWidgets.QTreeWidget):
+class _ArgumentEditor(EntryTreeWidget):
     def __init__(self, manager, dock, expurl):
         self.manager = manager
         self.expurl = expurl
 
-        QtWidgets.QTreeWidget.__init__(self)
-        self.setColumnCount(3)
-        self.header().setStretchLastSection(False)
-        if hasattr(self.header(), "setSectionResizeMode"):
-            set_resize_mode = self.header().setSectionResizeMode
-        else:
-            set_resize_mode = self.header().setResizeMode
-        set_resize_mode(0, QtWidgets.QHeaderView.ResizeToContents)
-        set_resize_mode(1, QtWidgets.QHeaderView.Stretch)
-        set_resize_mode(2, QtWidgets.QHeaderView.ResizeToContents)
-        self.header().setVisible(False)
-        self.setSelectionMode(self.NoSelection)
-        self.setHorizontalScrollMode(self.ScrollPerPixel)
-        self.setVerticalScrollMode(self.ScrollPerPixel)
-
-        self.setStyleSheet("QTreeWidget {background: " +
-                           self.palette().midlight().color().name() + " ;}")
-
-        self.viewport().installEventFilter(WheelFilter(self.viewport(), True))
-
-        self._groups = dict()
-        self._arg_to_widgets = dict()
+        EntryTreeWidget.__init__(self)
 
         arguments = self.manager.get_submission_arguments(self.expurl)
 
         if not arguments:
-            self.addTopLevelItem(QtWidgets.QTreeWidgetItem(["No arguments"]))
+            self.insertTopLevelItem(0, QtWidgets.QTreeWidgetItem(["No arguments"]))
 
-        gradient = QtGui.QLinearGradient(
-            0, 0, 0, QtGui.QFontMetrics(self.font()).lineSpacing()*2.5)
-        gradient.setColorAt(0, self.palette().base().color())
-        gradient.setColorAt(1, self.palette().midlight().color())
         for name, argument in arguments.items():
-            widgets = dict()
-            self._arg_to_widgets[name] = widgets
+            self.set_argument(name, argument)
 
-            entry = procdesc_to_entry(argument["desc"])(argument)
-            widget_item = QtWidgets.QTreeWidgetItem([name])
-            if argument["tooltip"]:
-                widget_item.setToolTip(0, argument["tooltip"])
-            widgets["entry"] = entry
-            widgets["widget_item"] = widget_item
+        self.quickStyleClicked.connect(dock.submit_clicked)
 
-            for col in range(3):
-                widget_item.setBackground(col, gradient)
-            font = widget_item.font(0)
-            font.setBold(True)
-            widget_item.setFont(0, font)
-
-            if argument["group"] is None:
-                self.addTopLevelItem(widget_item)
-            else:
-                self._get_group(argument["group"]).addChild(widget_item)
-            fix_layout = LayoutWidget()
-            widgets["fix_layout"] = fix_layout
-            fix_layout.addWidget(entry)
-            self.setItemWidget(widget_item, 1, fix_layout)
-            recompute_argument = QtWidgets.QToolButton()
-            recompute_argument.setToolTip("Re-run the experiment's build "
-                                          "method and take the default value")
-            recompute_argument.setIcon(
-                QtWidgets.QApplication.style().standardIcon(
-                    QtWidgets.QStyle.SP_BrowserReload))
-            recompute_argument.clicked.connect(
-                partial(self._recompute_argument_clicked, name))
-
-            tool_buttons = LayoutWidget()
-            tool_buttons.addWidget(recompute_argument, 1)
-
-            disable_other_scans = QtWidgets.QToolButton()
-            widgets["disable_other_scans"] = disable_other_scans
-            disable_other_scans.setIcon(
-                QtWidgets.QApplication.style().standardIcon(
-                    QtWidgets.QStyle.SP_DialogResetButton))
-            disable_other_scans.setToolTip("Disable all other scans in "
-                                           "this experiment")
-            disable_other_scans.clicked.connect(
-                partial(self._disable_other_scans, name))
-            tool_buttons.layout.setRowStretch(0, 1)
-            tool_buttons.layout.setRowStretch(3, 1)
-            tool_buttons.addWidget(disable_other_scans, 2)
-            if not isinstance(entry, ScanEntry):
-                disable_other_scans.setVisible(False)
-
-            self.setItemWidget(widget_item, 2, tool_buttons)
-
-        widget_item = QtWidgets.QTreeWidgetItem()
-        self.addTopLevelItem(widget_item)
         recompute_arguments = QtWidgets.QPushButton("Recompute all arguments")
         recompute_arguments.setIcon(
             QtWidgets.QApplication.style().standardIcon(
@@ -135,41 +59,10 @@ class _ArgumentEditor(QtWidgets.QTreeWidget):
         buttons.layout.setColumnStretch(1, 0)
         buttons.layout.setColumnStretch(2, 0)
         buttons.layout.setColumnStretch(3, 1)
-        self.setItemWidget(widget_item, 1, buttons)
+        self.setItemWidget(self.bottom_item, 1, buttons)
 
-    def _get_group(self, name):
-        if name in self._groups:
-            return self._groups[name]
-        group = QtWidgets.QTreeWidgetItem([name])
-        for col in range(3):
-            group.setBackground(col, self.palette().mid())
-            group.setForeground(col, self.palette().brightText())
-            font = group.font(col)
-            font.setBold(True)
-            group.setFont(col, font)
-        self.addTopLevelItem(group)
-        self._groups[name] = group
-        return group
-
-    def update_argument(self, name, argument):
-        widgets = self._arg_to_widgets[name]
-
-        # Qt needs a setItemWidget() to handle layout correctly,
-        # simply replacing the entry inside the LayoutWidget
-        # results in a bug.
-
-        widgets["entry"].deleteLater()
-        widgets["entry"] = procdesc_to_entry(argument["desc"])(argument)
-        widgets["disable_other_scans"].setVisible(
-            isinstance(widgets["entry"], ScanEntry))
-        widgets["fix_layout"].deleteLater()
-        widgets["fix_layout"] = LayoutWidget()
-        widgets["fix_layout"].addWidget(widgets["entry"])
-        self.setItemWidget(widgets["widget_item"], 1, widgets["fix_layout"])
-        self.updateGeometries()
-
-    def _recompute_argument_clicked(self, name):
-        asyncio.ensure_future(self._recompute_argument(name))
+    def reset_entry(self, key):
+        asyncio.ensure_future(self._recompute_argument(key))
 
     async def _recompute_argument(self, name):
         try:
@@ -186,30 +79,6 @@ class _ArgumentEditor(QtWidgets.QTreeWidget):
         argument["state"] = state
         self.update_argument(name, argument)
 
-    def _disable_other_scans(self, current_name):
-        for name, widgets in self._arg_to_widgets.items():
-            if (name != current_name
-                    and isinstance(widgets["entry"], ScanEntry)):
-                widgets["entry"].disable()
-
-    def save_state(self):
-        expanded = []
-        for k, v in self._groups.items():
-            if v.isExpanded():
-                expanded.append(k)
-        return {
-            "expanded": expanded,
-            "scroll": self.verticalScrollBar().value()
-        }
-
-    def restore_state(self, state):
-        for e in state["expanded"]:
-            try:
-                self._groups[e].setExpanded(True)
-            except KeyError:
-                pass
-        self.verticalScrollBar().setValue(state["scroll"])
-
     # Hooks that allow user-supplied argument editors to react to imminent user
     # actions. Here, we always keep the manager-stored submission arguments
     # up-to-date, so no further action is required.
@@ -229,7 +98,7 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
     def __init__(self, manager, expurl):
         QtWidgets.QMdiSubWindow.__init__(self)
         qfm = QtGui.QFontMetrics(self.font())
-        self.resize(100*qfm.averageCharWidth(), 30*qfm.lineSpacing())
+        self.resize(100 * qfm.averageCharWidth(), 30 * qfm.lineSpacing())
         self.setWindowTitle(expurl)
         self.setWindowIcon(QtWidgets.QApplication.style().standardIcon(
             QtWidgets.QStyle.SP_FileDialogContentsView))
@@ -262,17 +131,17 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
             datetime.setDate(QtCore.QDate.currentDate())
         else:
             datetime.setDateTime(QtCore.QDateTime.fromMSecsSinceEpoch(
-                int(scheduling["due_date"]*1000)))
+                int(scheduling["due_date"] * 1000)))
         datetime_en.setChecked(scheduling["due_date"] is not None)
 
         def update_datetime(dt):
-            scheduling["due_date"] = dt.toMSecsSinceEpoch()/1000
+            scheduling["due_date"] = dt.toMSecsSinceEpoch() / 1000
             datetime_en.setChecked(True)
         datetime.dateTimeChanged.connect(update_datetime)
 
         def update_datetime_en(checked):
             if checked:
-                due_date = datetime.dateTime().toMSecsSinceEpoch()/1000
+                due_date = datetime.dateTime().toMSecsSinceEpoch() / 1000
             else:
                 due_date = None
             scheduling["due_date"] = due_date
@@ -305,7 +174,7 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
         flush = self.flush
         flush.setToolTip("Flush the pipeline (of current- and higher-priority "
                          "experiments) before starting the experiment")
-        self.layout.addWidget(flush, 2, 2, 1, 2)
+        self.layout.addWidget(flush, 2, 2)
 
         flush.setChecked(scheduling["flush"])
 
@@ -313,6 +182,20 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
             scheduling["flush"] = bool(checked)
         flush.stateChanged.connect(update_flush)
 
+        devarg_override = QtWidgets.QComboBox()
+        devarg_override.setEditable(True)
+        devarg_override.lineEdit().setPlaceholderText("Override device arguments")
+        devarg_override.lineEdit().setClearButtonEnabled(True)
+        devarg_override.insertItem(0, "core:analyze_at_run_end=True")
+        self.layout.addWidget(devarg_override, 2, 3)
+
+        devarg_override.setCurrentText(options["devarg_override"])
+
+        def update_devarg_override(text):
+            options["devarg_override"] = text
+        devarg_override.editTextChanged.connect(update_devarg_override)
+        self.devarg_override = devarg_override
+
         log_level = QtWidgets.QComboBox()
         log_level.addItems(log_levels)
         log_level.setCurrentIndex(1)
@@ -333,9 +216,11 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
         if "repo_rev" in options:
             repo_rev = QtWidgets.QLineEdit()
             repo_rev.setPlaceholderText("current")
-            repo_rev_label = QtWidgets.QLabel("Revision:")
+            repo_rev.setClearButtonEnabled(True)
+            repo_rev_label = QtWidgets.QLabel("Rev / ref:")
             repo_rev_label.setToolTip("Experiment repository revision "
-                                      "(commit ID) to use")
+                                      "(commit ID) or reference (branch "
+                                      "or tag) to use")
             self.layout.addWidget(repo_rev_label, 3, 2)
             self.layout.addWidget(repo_rev, 3, 3)
 
@@ -352,7 +237,7 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
 
         submit = QtWidgets.QPushButton("Submit")
         submit.setIcon(QtWidgets.QApplication.style().standardIcon(
-                QtWidgets.QStyle.SP_DialogOkButton))
+                       QtWidgets.QStyle.SP_DialogOkButton))
         submit.setToolTip("Schedule the experiment (Ctrl+Return)")
         submit.setShortcut("CTRL+RETURN")
         submit.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
@@ -362,7 +247,7 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
 
         reqterm = QtWidgets.QPushButton("Terminate instances")
         reqterm.setIcon(QtWidgets.QApplication.style().standardIcon(
-                QtWidgets.QStyle.SP_DialogCancelButton))
+                        QtWidgets.QStyle.SP_DialogCancelButton))
         reqterm.setToolTip("Request termination of instances (Ctrl+Backspace)")
         reqterm.setShortcut("CTRL+BACKSPACE")
         reqterm.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
@@ -404,8 +289,7 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
         arginfo = expdesc["arginfo"]
         for k, v in overrides.items():
             # Some values (e.g. scans) may have multiple defaults in a list
-            if ("default" in arginfo[k][0]
-                    and isinstance(arginfo[k][0]["default"], list)):
+            if ("default" in arginfo[k][0] and isinstance(arginfo[k][0]["default"], list)):
                 arginfo[k][0]["default"].insert(0, v)
             else:
                 arginfo[k][0]["default"] = v
@@ -416,8 +300,8 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
 
         editor_class = self.manager.get_argument_editor_class(self.expurl)
         self.argeditor = editor_class(self.manager, self, self.expurl)
-        self.argeditor.restore_state(argeditor_state)
         self.layout.addWidget(self.argeditor, 0, 0, 1, 5)
+        self.argeditor.restore_state(argeditor_state)
 
     def contextMenuEvent(self, event):
         menu = QtWidgets.QMenu(self)
@@ -465,11 +349,14 @@ class _ExperimentDock(QtWidgets.QMdiSubWindow):
             return
 
         try:
+            if "devarg_override" in expid:
+                self.devarg_override.setCurrentText(
+                    unparse_devarg_override(expid["devarg_override"]))
             self.log_level.setCurrentIndex(log_levels.index(
                 log_level_to_name(expid["log_level"])))
-            if ("repo_rev" in expid and
-                    expid["repo_rev"] != "N/A" and
-                    hasattr(self, "repo_rev")):
+            if "repo_rev" in expid and \
+               expid["repo_rev"] != "N/A" and \
+               hasattr(self, "repo_rev"):
                 self.repo_rev.setText(expid["repo_rev"])
         except:
             logger.error("Could not set submission options from HDF5 expid",
@@ -638,7 +525,8 @@ class ExperimentManager:
         else:
             # mutated by _ExperimentDock
             options = {
-                "log_level": logging.WARNING
+                "log_level": logging.WARNING,
+                "devarg_override": ""
             }
             if expurl[:5] == "repo:":
                 options["repo_rev"] = None
@@ -658,7 +546,7 @@ class ExperimentManager:
         self.submission_arguments[expurl] = arguments
         self.argument_ui_names[expurl] = ui_name
         return arguments
-    
+
     def set_argument_value(self, expurl, name, value):
         try:
             argument = self.submission_arguments[expurl][name]
@@ -671,7 +559,8 @@ class ExperimentManager:
             if expurl in self.open_experiments.keys():
                 self.open_experiments[expurl].argeditor.update_argument(name, argument)
         except:
-            logger.warn("Failed to set value for argument \"{}\" in experiment: {}.".format(name, expurl), exc_info=1)
+            logger.warn("Failed to set value for argument \"{}\" in experiment: {}."
+                        .format(name, expurl), exc_info=1)
 
     def get_submission_arguments(self, expurl):
         if expurl in self.submission_arguments:
@@ -681,8 +570,8 @@ class ExperimentManager:
                 raise ValueError("Submission arguments must be preinitialized "
                                  "when not using repository")
             class_desc = self.explist[expurl[5:]]
-            return self.initialize_submission_arguments(expurl,
-                class_desc["arginfo"], class_desc.get("argument_ui", None))
+            return self.initialize_submission_arguments(expurl, class_desc["arginfo"],
+                                                        class_desc.get("argument_ui", None))
 
     def open_experiment(self, expurl):
         if expurl in self.open_experiments:
@@ -719,8 +608,13 @@ class ExperimentManager:
         del self.open_experiments[expurl]
 
     async def _submit_task(self, expurl, *args):
-        rid = await self.schedule_ctl.submit(*args)
-        logger.info("Submitted '%s', RID is %d", expurl, rid)
+        try:
+            rid = await self.schedule_ctl.submit(*args)
+        except KeyError:
+            expid = args[1]
+            logger.error("Submission failed - revision \"%s\" was not found", expid["repo_rev"])
+        else:
+            logger.info("Submitted '%s', RID is %d", expurl, rid)
 
     def submit(self, expurl):
         file, class_name, _ = self.resolve_expurl(expurl)
@@ -733,7 +627,14 @@ class ExperimentManager:
             entry_cls = procdesc_to_entry(argument["desc"])
             argument_values[name] = entry_cls.state_to_value(argument["state"])
 
+        try:
+            devarg_override = parse_devarg_override(options["devarg_override"])
+        except:
+            logger.error("Failed to parse device argument overrides for %s", expurl)
+            return
+
         expid = {
+            "devarg_override": devarg_override,
             "log_level": options["log_level"],
             "file": file,
             "class_name": class_name,
@@ -770,9 +671,9 @@ class ExperimentManager:
                 repo_match = "repo_rev" in expid
             else:
                 repo_match = "repo_rev" not in expid
-            if (repo_match and
-                    ("file" in expid and expid["file"] == file) and
-                    expid["class_name"] == class_name):
+            if repo_match and \
+               ("file" in expid and expid["file"] == file) and \
+               expid["class_name"] == class_name:
                 rids.append(rid)
         asyncio.ensure_future(self._request_term_multiple(rids))
 
@@ -792,7 +693,7 @@ class ExperimentManager:
         for class_name, class_desc in description.items():
             expurl = "file:{}@{}".format(class_name, file)
             self.initialize_submission_arguments(expurl, class_desc["arginfo"],
-                class_desc.get("argument_ui", None))
+                                                 class_desc.get("argument_ui", None))
             if expurl in self.open_experiments:
                 self.open_experiments[expurl].close()
             self.open_experiment(expurl)
@@ -826,6 +727,7 @@ class ExperimentManager:
 
         self.is_quick_open_shown = True
         dialog = _QuickOpenDialog(self)
+
         def closed():
             self.is_quick_open_shown = False
         dialog.closed.connect(closed)

artiq/dashboard/explorer.py

@@ -94,7 +94,7 @@ class _OpenFileDialog(QtWidgets.QDialog):
                         else:
                             break
                     self.explorer.current_directory = \
-                        self.explorer.current_directory[:idx+1]
+                        self.explorer.current_directory[:idx + 1]
                     if self.explorer.current_directory == "/":
                         self.explorer.current_directory = ""
                 asyncio.ensure_future(self.refresh_view())
@@ -103,6 +103,7 @@ class _OpenFileDialog(QtWidgets.QDialog):
                 asyncio.ensure_future(self.refresh_view())
             else:
                 file = self.explorer.current_directory + selected
+
                 async def open_task():
                     try:
                         await self.exp_manager.open_file(file)
@@ -232,7 +233,7 @@ class ExplorerDock(QtWidgets.QDockWidget):
 
         set_shortcut_menu = QtWidgets.QMenu()
         for i in range(12):
-            action = QtWidgets.QAction("F" + str(i+1), self.el)
+            action = QtWidgets.QAction("F" + str(i + 1), self.el)
             action.triggered.connect(partial(self.set_shortcut, i))
             set_shortcut_menu.addAction(action)
 
@@ -246,12 +247,14 @@ class ExplorerDock(QtWidgets.QDockWidget):
 
         scan_repository_action = QtWidgets.QAction("Scan repository HEAD",
                                                    self.el)
+
         def scan_repository():
             asyncio.ensure_future(experiment_db_ctl.scan_repository_async())
         scan_repository_action.triggered.connect(scan_repository)
         self.el.addAction(scan_repository_action)
 
         scan_ddb_action = QtWidgets.QAction("Scan device database", self.el)
+
         def scan_ddb():
             asyncio.ensure_future(device_db_ctl.scan())
         scan_ddb_action.triggered.connect(scan_ddb)
@@ -292,7 +295,7 @@ class ExplorerDock(QtWidgets.QDockWidget):
         if expname is not None:
             expurl = "repo:" + expname
             self.d_shortcuts.set_shortcut(nr, expurl)
-            logger.info("Set shortcut F%d to '%s'", nr+1, expurl)
+            logger.info("Set shortcut F%d to '%s'", nr + 1, expurl)
 
     def update_scanning(self, scanning):
         if scanning:

artiq/dashboard/interactive_args.py

@@ -0,0 +1,155 @@
+import logging
+import asyncio
+
+from PyQt5 import QtCore, QtWidgets, QtGui
+
+from artiq.gui.models import DictSyncModel
+from artiq.gui.entries import EntryTreeWidget, procdesc_to_entry
+from artiq.gui.tools import LayoutWidget
+
+
+logger = logging.getLogger(__name__)
+
+
+class Model(DictSyncModel):
+    def __init__(self, init):
+        DictSyncModel.__init__(self, ["RID", "Title", "Args"], init)
+
+    def convert(self, k, v, column):
+        if column == 0:
+            return k
+        elif column == 1:
+            txt = ": " + v["title"] if v["title"] != "" else ""
+            return str(k) + txt
+        elif column == 2:
+            return v["arglist_desc"]
+        else:
+            raise ValueError
+
+    def sort_key(self, k, v):
+        return k
+
+
+class _InteractiveArgsRequest(EntryTreeWidget):
+    supplied = QtCore.pyqtSignal(int, dict)
+    cancelled = QtCore.pyqtSignal(int)
+
+    def __init__(self, rid, arglist_desc):
+        EntryTreeWidget.__init__(self)
+        self.rid = rid
+        self.arguments = dict()
+        for key, procdesc, group, tooltip in arglist_desc:
+            self.arguments[key] = {"desc": procdesc, "group": group, "tooltip": tooltip}
+            self.set_argument(key, self.arguments[key])
+        self.quickStyleClicked.connect(self.supply)
+        cancel_btn = QtWidgets.QPushButton("Cancel")
+        cancel_btn.setIcon(QtWidgets.QApplication.style().standardIcon(
+            QtWidgets.QStyle.SP_DialogCancelButton))
+        cancel_btn.clicked.connect(self.cancel)
+        supply_btn = QtWidgets.QPushButton("Supply")
+        supply_btn.setIcon(QtWidgets.QApplication.style().standardIcon(
+            QtWidgets.QStyle.SP_DialogOkButton))
+        supply_btn.clicked.connect(self.supply)
+        buttons = LayoutWidget()
+        buttons.addWidget(cancel_btn, 1, 1)
+        buttons.addWidget(supply_btn, 1, 2)
+        buttons.layout.setColumnStretch(0, 1)
+        buttons.layout.setColumnStretch(1, 0)
+        buttons.layout.setColumnStretch(2, 0)
+        buttons.layout.setColumnStretch(3, 1)
+        self.setItemWidget(self.bottom_item, 1, buttons)
+
+    def supply(self):
+        argument_values = dict()
+        for key, argument in self.arguments.items():
+            entry_cls = procdesc_to_entry(argument["desc"])
+            argument_values[key] = entry_cls.state_to_value(argument["state"])
+        self.supplied.emit(self.rid, argument_values)
+
+    def cancel(self):
+        self.cancelled.emit(self.rid)
+
+
+class _InteractiveArgsView(QtWidgets.QStackedWidget):
+    supplied = QtCore.pyqtSignal(int, dict)
+    cancelled = QtCore.pyqtSignal(int)
+
+    def __init__(self):
+        QtWidgets.QStackedWidget.__init__(self)
+        self.tabs = QtWidgets.QTabWidget()
+        self.default_label = QtWidgets.QLabel("No pending interactive arguments requests.")
+        self.default_label.setAlignment(QtCore.Qt.AlignCenter)
+        font = QtGui.QFont(self.default_label.font())
+        font.setItalic(True)
+        self.default_label.setFont(font)
+        self.addWidget(self.tabs)
+        self.addWidget(self.default_label)
+        self.model = Model({})
+
+    def setModel(self, model):
+        self.setCurrentIndex(1)
+        for i in range(self.tabs.count()):
+            widget = self.tabs.widget(i)
+            self.tabs.removeTab(i)
+            widget.deleteLater()
+        self.model = model
+        self.model.rowsInserted.connect(self.rowsInserted)
+        self.model.rowsRemoved.connect(self.rowsRemoved)
+        for i in range(self.model.rowCount(QtCore.QModelIndex())):
+            self._insert_widget(i)
+
+    def _insert_widget(self, row):
+        rid = self.model.data(self.model.index(row, 0), QtCore.Qt.DisplayRole)
+        title = self.model.data(self.model.index(row, 1), QtCore.Qt.DisplayRole)
+        arglist_desc = self.model.data(self.model.index(row, 2), QtCore.Qt.DisplayRole)
+        inter_args_request = _InteractiveArgsRequest(rid, arglist_desc)
+        inter_args_request.supplied.connect(self.supplied)
+        inter_args_request.cancelled.connect(self.cancelled)
+        self.tabs.insertTab(row, inter_args_request, title)
+
+    def rowsInserted(self, parent, first, last):
+        assert first == last
+        self.setCurrentIndex(0)
+        self._insert_widget(first)
+
+    def rowsRemoved(self, parent, first, last):
+        assert first == last
+        widget = self.tabs.widget(first)
+        self.tabs.removeTab(first)
+        widget.deleteLater()
+        if self.tabs.count() == 0:
+            self.setCurrentIndex(1)
+
+
+class InteractiveArgsDock(QtWidgets.QDockWidget):
+    def __init__(self, interactive_args_sub, interactive_args_rpc):
+        QtWidgets.QDockWidget.__init__(self, "Interactive Args")
+        self.setObjectName("Interactive Args")
+        self.setFeatures(
+            QtWidgets.QDockWidget.DockWidgetMovable | QtWidgets.QDockWidget.DockWidgetFloatable)
+        self.interactive_args_rpc = interactive_args_rpc
+        self.request_view = _InteractiveArgsView()
+        self.request_view.supplied.connect(self.supply)
+        self.request_view.cancelled.connect(self.cancel)
+        self.setWidget(self.request_view)
+        interactive_args_sub.add_setmodel_callback(self.request_view.setModel)
+
+    def supply(self, rid, values):
+        asyncio.ensure_future(self._supply_task(rid, values))
+
+    async def _supply_task(self, rid, values):
+        try:
+            await self.interactive_args_rpc.supply(rid, values)
+        except Exception:
+            logger.error("failed to supply interactive arguments for experiment: %d",
+                         rid, exc_info=True)
+
+    def cancel(self, rid):
+        asyncio.ensure_future(self._cancel_task(rid))
+
+    async def _cancel_task(self, rid):
+        try:
+            await self.interactive_args_rpc.cancel(rid)
+        except Exception:
+            logger.error("failed to cancel interactive args request for experiment: %d",
+                         rid, exc_info=True)

artiq/dashboard/moninj.py

@@ -2,23 +2,20 @@ import asyncio
 import logging
 import textwrap
 from collections import namedtuple
+from functools import partial
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PyQt5 import QtCore, QtWidgets
 
-from sipyco.sync_struct import Subscriber
-
-from artiq.coredevice.comm_moninj import *
-from artiq.coredevice.ad9910 import (
-    _AD9910_REG_PROFILE0, _AD9910_REG_PROFILE7, 
-    _AD9910_REG_FTW, _AD9910_REG_CFR1
-)
-from artiq.coredevice.ad9912_reg import AD9912_POW1, AD9912_SER_CONF
-from artiq.gui.tools import LayoutWidget
-from artiq.gui.flowlayout import FlowLayout
+from artiq.coredevice.comm_moninj import CommMonInj, TTLOverride, TTLProbe
+from artiq.coredevice.ad9912_reg import AD9912_SER_CONF
+from artiq.gui.tools import LayoutWidget, QDockWidgetCloseDetect, DoubleClickLineEdit
+from artiq.gui.dndwidgets import VDragScrollArea, DragDropFlowLayoutWidget
+from artiq.gui.models import DictSyncTreeSepModel
 
 
 logger = logging.getLogger(__name__)
 
+
 class _CancellableLineEdit(QtWidgets.QLineEdit):
     def escapePressedConnect(self, cb):
         self.esc_cb = cb
@@ -37,6 +34,7 @@ class _TTLWidget(QtWidgets.QFrame):
         self.channel = channel
         self.set_mode = dm.ttl_set_mode
         self.force_out = force_out
+        self.title = title
 
         self.setFrameShape(QtWidgets.QFrame.Box)
         self.setFrameShadow(QtWidgets.QFrame.Raised)
@@ -133,7 +131,7 @@ class _TTLWidget(QtWidgets.QFrame):
         else:
             color = ""
         self.value.setText("<font size=\"5\"{}>{}</font>".format(
-                            color, value_s))
+                           color, value_s))
         oe = self.cur_oe or self.force_out
         direction = "OUT" if oe else "IN"
         self.direction.setText("<font size=\"2\">" + direction + "</font>")
@@ -148,40 +146,13 @@ class _TTLWidget(QtWidgets.QFrame):
             self.programmatic_change = False
 
     def sort_key(self):
-        return self.channel
+        return (0, self.channel, 0)
 
+    def uid(self):
+        return self.title
 
-class _SimpleDisplayWidget(QtWidgets.QFrame):
-    def __init__(self, title):
-        QtWidgets.QFrame.__init__(self)
-
-        self.setFrameShape(QtWidgets.QFrame.Box)
-        self.setFrameShadow(QtWidgets.QFrame.Raised)
-
-        grid = QtWidgets.QGridLayout()
-        grid.setContentsMargins(0, 0, 0, 0)
-        grid.setHorizontalSpacing(0)
-        grid.setVerticalSpacing(0)
-        self.setLayout(grid)
-        label = QtWidgets.QLabel(title)
-        label.setAlignment(QtCore.Qt.AlignCenter)
-        grid.addWidget(label, 1, 1)
-
-        self.value = QtWidgets.QLabel()
-        self.value.setAlignment(QtCore.Qt.AlignCenter)
-        grid.addWidget(self.value, 2, 1, 6, 1)
-
-        grid.setRowStretch(1, 1)
-        grid.setRowStretch(2, 0)
-        grid.setRowStretch(3, 1)
-
-        self.refresh_display()
-
-    def refresh_display(self):
-        raise NotImplementedError
-
-    def sort_key(self):
-        raise NotImplementedError
+    def to_model_path(self):
+        return "ttl/{}".format(self.title)
 
 
 class _DDSModel:
@@ -191,7 +162,7 @@ class _DDSModel:
         self.cur_reg = 0
         self.dds_type = dds_type
         self.is_urukul = dds_type in ["AD9910", "AD9912"]
-    
+
         if dds_type == "AD9914":
             self.ftw_per_hz = 2**32 / ref_clk
         else:
@@ -216,13 +187,15 @@ class _DDSModel:
 
 
 class _DDSWidget(QtWidgets.QFrame):
-    def __init__(self, dm, title, bus_channel=0, channel=0, dds_model=None):
+    def __init__(self, dm, title, bus_channel, channel,
+                 dds_type, ref_clk, cpld=None, pll=1, clk_div=0):
         self.dm = dm
         self.bus_channel = bus_channel
         self.channel = channel
         self.dds_name = title
         self.cur_frequency = 0
-        self.dds_model = dds_model
+        self.dds_model = _DDSModel(dds_type, ref_clk, cpld, pll, clk_div)
+        self.title = title
 
         QtWidgets.QFrame.__init__(self)
 
@@ -283,7 +256,7 @@ class _DDSWidget(QtWidgets.QFrame):
         set_btn.setText("Set")
         set_btn.setToolTip("Set frequency")
         set_grid.addWidget(set_btn, 0, 1, 1, 1)
-        
+
         # for urukuls also allow switching off RF
         if self.dds_model.is_urukul:
             off_btn = QtWidgets.QToolButton()
@@ -327,18 +300,17 @@ class _DDSWidget(QtWidgets.QFrame):
     def set_clicked(self, set):
         self.data_stack.setCurrentIndex(1)
         self.button_stack.setCurrentIndex(1)
-        self.value_edit.setText("{:.7f}"
-                .format(self.cur_frequency/1e6))
+        self.value_edit.setText("{:.7f}".format(self.cur_frequency / 1e6))
         self.value_edit.setFocus()
         self.value_edit.selectAll()
 
     def off_clicked(self, set):
         self.dm.dds_channel_toggle(self.dds_name, self.dds_model, sw=False)
-    
+
     def apply_changes(self, apply):
         self.data_stack.setCurrentIndex(0)
         self.button_stack.setCurrentIndex(0)
-        frequency = float(self.value_edit.text())*1e6
+        frequency = float(self.value_edit.text()) * 1e6
         self.dm.dds_set_frequency(self.dds_name, self.dds_model, frequency)
 
     def cancel_changes(self, cancel):
@@ -347,28 +319,61 @@ class _DDSWidget(QtWidgets.QFrame):
 
     def refresh_display(self):
         self.cur_frequency = self.dds_model.cur_frequency
-        self.value_label.setText("<font size=\"4\">{:.7f}</font>"
-                           .format(self.cur_frequency/1e6))
-        self.value_edit.setText("{:.7f}"
-                           .format(self.cur_frequency/1e6))
+        self.value_label.setText("<font size=\"4\">{:.7f}</font>".format(self.cur_frequency / 1e6))
+        self.value_edit.setText("{:.7f}".format(self.cur_frequency / 1e6))
 
     def sort_key(self):
-        return (self.bus_channel, self.channel)
+        return (1, self.bus_channel, self.channel)
+
+    def uid(self):
+        return self.title
+
+    def to_model_path(self):
+        return "dds/{}".format(self.title)
 
 
-class _DACWidget(_SimpleDisplayWidget):
+class _DACWidget(QtWidgets.QFrame):
     def __init__(self, dm, spi_channel, channel, title):
+        QtWidgets.QFrame.__init__(self)
         self.spi_channel = spi_channel
         self.channel = channel
         self.cur_value = 0
-        _SimpleDisplayWidget.__init__(self, "{} ch{}".format(title, channel))
+        self.title = title
+
+        self.setFrameShape(QtWidgets.QFrame.Box)
+        self.setFrameShadow(QtWidgets.QFrame.Raised)
+
+        grid = QtWidgets.QGridLayout()
+        grid.setContentsMargins(0, 0, 0, 0)
+        grid.setHorizontalSpacing(0)
+        grid.setVerticalSpacing(0)
+        self.setLayout(grid)
+        label = QtWidgets.QLabel("{} ch{}".format(title, channel))
+        label.setAlignment(QtCore.Qt.AlignCenter)
+        grid.addWidget(label, 1, 1)
+
+        self.value = QtWidgets.QLabel()
+        self.value.setAlignment(QtCore.Qt.AlignCenter)
+        grid.addWidget(self.value, 2, 1, 6, 1)
+
+        grid.setRowStretch(1, 1)
+        grid.setRowStretch(2, 0)
+        grid.setRowStretch(3, 1)
+
+        self.refresh_display()
 
     def refresh_display(self):
         self.value.setText("<font size=\"4\">{:.3f}</font><font size=\"2\"> %</font>"
-                           .format(self.cur_value*100/2**16))
+                           .format(self.cur_value * 100 / 2**16))
 
     def sort_key(self):
-        return (self.spi_channel, self.channel)
+        return (2, self.spi_channel, self.channel)
+
+    def uid(self):
+        return (self.title, self.channel)
+
+    def to_model_path(self):
+        return "dac/{} ch{}".format(self.title, self.channel)
 
 
 _WidgetDesc = namedtuple("_WidgetDesc", "uid comment cls arguments")
@@ -392,18 +397,15 @@ def setup_from_ddb(ddb):
                         force_out = v["class"] == "TTLOut"
                         widget = _WidgetDesc(k, comment, _TTLWidget, (channel, force_out, k))
                         description.add(widget)
-                    elif (v["module"] == "artiq.coredevice.ad9914"
-                            and v["class"] == "AD9914"):
+                    elif (v["module"] == "artiq.coredevice.ad9914" and v["class"] == "AD9914"):
                         bus_channel = v["arguments"]["bus_channel"]
                         channel = v["arguments"]["channel"]
                         dds_sysclk = v["arguments"]["sysclk"]
-                        model = _DDSModel(v["class"], dds_sysclk)
-                        widget = _WidgetDesc(k, comment, _DDSWidget, (k, bus_channel, channel, model))
+                        widget = _WidgetDesc(k, comment, _DDSWidget,
+                                             (k, bus_channel, channel, v["class"], dds_sysclk))
                         description.add(widget)
-                    elif (v["module"] == "artiq.coredevice.ad9910"
-                                and v["class"] == "AD9910") or \
-                            (v["module"] == "artiq.coredevice.ad9912"
-                                and v["class"] == "AD9912"):
+                    elif (v["module"] == "artiq.coredevice.ad9910" and v["class"] == "AD9910") or \
+                         (v["module"] == "artiq.coredevice.ad9912" and v["class"] == "AD9912"):
                         channel = v["arguments"]["chip_select"] - 4
                         if channel < 0:
                             continue
@@ -413,18 +415,20 @@ def setup_from_ddb(ddb):
                         pll = v["arguments"]["pll_n"]
                         refclk = ddb[dds_cpld]["arguments"]["refclk"]
                         clk_div = v["arguments"].get("clk_div", 0)
-                        model = _DDSModel( v["class"], refclk, dds_cpld, pll, clk_div)
-                        widget = _WidgetDesc(k, comment, _DDSWidget, (k, bus_channel, channel, model))
-                        description.add(widget)       
-                    elif (   (v["module"] == "artiq.coredevice.ad53xx" and v["class"] == "AD53xx")
-                          or (v["module"] == "artiq.coredevice.zotino" and v["class"] == "Zotino")):
+                        widget = _WidgetDesc(k, comment, _DDSWidget,
+                                             (k, bus_channel, channel, v["class"],
+                                              refclk, dds_cpld, pll, clk_div))
+                        description.add(widget)
+                    elif (v["module"] == "artiq.coredevice.ad53xx" and v["class"] == "AD53xx") or \
+                         (v["module"] == "artiq.coredevice.zotino" and v["class"] == "Zotino"):
                         spi_device = v["arguments"]["spi_device"]
                         spi_device = ddb[spi_device]
                         while isinstance(spi_device, str):
                             spi_device = ddb[spi_device]
                         spi_channel = spi_device["arguments"]["channel"]
                         for channel in range(32):
-                            widget = _WidgetDesc((k, channel), comment, _DACWidget, (spi_channel, channel, k))
+                            widget = _WidgetDesc((k, channel), comment, _DACWidget,
+                                                 (spi_channel, channel, k))
                             description.add(widget)
                 elif v["type"] == "controller" and k == "core_moninj":
                     mi_addr = v["host"]
@@ -449,18 +453,15 @@ class _DeviceManager:
         self.widgets_by_uid = dict()
 
         self.dds_sysclk = 0
-        self.ttl_cb = lambda: None
         self.ttl_widgets = dict()
-        self.dds_cb = lambda: None
         self.dds_widgets = dict()
-        self.dac_cb = lambda: None
         self.dac_widgets = dict()
+        self.channels_cb = lambda: None
 
     def init_ddb(self, ddb):
         self.ddb = ddb
-        return ddb
 
-    def notify(self, mod):
+    def notify_ddb(self, mod):
         mi_addr, mi_port, description = setup_from_ddb(self.ddb)
 
         if (mi_addr, mi_port) != (self.mi_addr, self.mi_port):
@@ -471,24 +472,8 @@ class _DeviceManager:
         for to_remove in self.description - description:
             widget = self.widgets_by_uid[to_remove.uid]
             del self.widgets_by_uid[to_remove.uid]
-
-            if isinstance(widget, _TTLWidget):
-                self.setup_ttl_monitoring(False, widget.channel)
-                widget.deleteLater()
-                del self.ttl_widgets[widget.channel]
-                self.ttl_cb()
-            elif isinstance(widget, _DDSWidget):
-                self.setup_dds_monitoring(False, widget.bus_channel, widget.channel)
-                widget.deleteLater()
-                del self.dds_widgets[(widget.bus_channel, widget.channel)]
-                self.dds_cb()
-            elif isinstance(widget, _DACWidget):
-                self.setup_dac_monitoring(False, widget.spi_channel, widget.channel)
-                widget.deleteLater()
-                del self.dac_widgets[(widget.spi_channel, widget.channel)]
-                self.dac_cb()     
-            else:
-                raise ValueError
+            self.setup_monitoring(False, widget)
+            widget.deleteLater()
 
         for to_add in description - self.description:
             widget = to_add.cls(self, *to_add.arguments)
@@ -496,26 +481,15 @@ class _DeviceManager:
                 widget.setToolTip(to_add.comment)
             self.widgets_by_uid[to_add.uid] = widget
 
-            if isinstance(widget, _TTLWidget):
-                self.ttl_widgets[widget.channel] = widget
-                self.ttl_cb()
-                self.setup_ttl_monitoring(True, widget.channel)
-            elif isinstance(widget, _DDSWidget):
-                self.dds_widgets[(widget.bus_channel, widget.channel)] = widget
-                self.dds_cb()
-                self.setup_dds_monitoring(True, widget.bus_channel, widget.channel)
-            elif isinstance(widget, _DACWidget):
-                self.dac_widgets[(widget.spi_channel, widget.channel)] = widget
-                self.dac_cb()
-                self.setup_dac_monitoring(True, widget.spi_channel, widget.channel)
-            else:
-                raise ValueError
+        if description != self.description:
+            self.channels_cb()
 
         self.description = description
 
     def ttl_set_mode(self, channel, mode):
         if self.mi_connection is not None:
-            widget = self.ttl_widgets[channel]
+            widget_uid = self.ttl_widgets[channel]
+            widget = self.widgets_by_uid[widget_uid]
             if mode == "0":
                 widget.cur_override = True
                 widget.cur_level = False
@@ -565,7 +539,7 @@ class _DeviceManager:
             cpld_dev = """self.setattr_device("core_cache")
                 self.setattr_device("{}")""".format(dds_model.cpld)
 
-            # `sta`/`rf_sw`` variables are guaranteed for urukuls 
+            # `sta`/`rf_sw`` variables are guaranteed for urukuls
             # so {action} can use it
             # if there's no RF enabled, CPLD may have not been initialized
             # but if there is, it has been initialised - no need to do again
@@ -624,8 +598,8 @@ class _DeviceManager:
                    channel_init=channel_init))
         asyncio.ensure_future(
             self._submit_by_content(
-                dds_exp, 
-                title, 
+                dds_exp,
+                title,
                 log_msg))
 
     def dds_set_frequency(self, dds_channel, dds_model, freq):
@@ -640,8 +614,8 @@ class _DeviceManager:
             dds_channel,
             dds_model,
             action,
-            "SetDDS", 
-            "Set DDS {} {}MHz".format(dds_channel, freq/1e6))
+            "SetDDS",
+            "Set DDS {} {}MHz".format(dds_channel, freq / 1e6))
 
     def dds_channel_toggle(self, dds_channel, dds_model, sw=True):
         # urukul only
@@ -661,9 +635,34 @@ class _DeviceManager:
             dds_channel,
             dds_model,
             action,
-            "ToggleDDS", 
+            "ToggleDDS",
             "Toggle DDS {} {}".format(dds_channel, "on" if sw else "off"))
 
+    def setup_monitoring(self, enable, widget):
+        if isinstance(widget, _TTLWidget):
+            key = widget.channel
+            args = (key,)
+            subscribers = self.ttl_widgets
+            subscribe_func = self.setup_ttl_monitoring
+        elif isinstance(widget, _DDSWidget):
+            key = (widget.bus_channel, widget.channel)
+            args = key
+            subscribers = self.dds_widgets
+            subscribe_func = self.setup_dds_monitoring
+        elif isinstance(widget, _DACWidget):
+            key = (widget.spi_channel, widget.channel)
+            args = key
+            subscribers = self.dac_widgets
+            subscribe_func = self.setup_dac_monitoring
+        else:
+            raise ValueError
+        if enable and key not in subscribers:
+            subscribers[key] = widget.uid()
+            subscribe_func(enable, *args)
+        elif not enable and key in subscribers:
+            subscribe_func(enable, *args)
+            del subscribers[key]
+
     def setup_ttl_monitoring(self, enable, channel):
         if self.mi_connection is not None:
             self.mi_connection.monitor_probe(enable, channel, TTLProbe.level.value)
@@ -683,24 +682,28 @@ class _DeviceManager:
 
     def monitor_cb(self, channel, probe, value):
         if channel in self.ttl_widgets:
-            widget = self.ttl_widgets[channel]
+            widget_uid = self.ttl_widgets[channel]
+            widget = self.widgets_by_uid[widget_uid]
             if probe == TTLProbe.level.value:
                 widget.cur_level = bool(value)
             elif probe == TTLProbe.oe.value:
                 widget.cur_oe = bool(value)
             widget.refresh_display()
         elif (channel, probe) in self.dds_widgets:
-            widget = self.dds_widgets[(channel, probe)]
+            widget_uid = self.dds_widgets[(channel, probe)]
+            widget = self.widgets_by_uid[widget_uid]
             widget.dds_model.monitor_update(probe, value)
             widget.refresh_display()
         elif (channel, probe) in self.dac_widgets:
-            widget = self.dac_widgets[(channel, probe)]
+            widget_uid = self.dac_widgets[(channel, probe)]
+            widget = self.widgets_by_uid[widget_uid]
             widget.cur_value = value
             widget.refresh_display()
 
     def injection_status_cb(self, channel, override, value):
         if channel in self.ttl_widgets:
-            widget = self.ttl_widgets[channel]
+            widget_uid = self.ttl_widgets[channel]
+            widget = self.widgets_by_uid[widget_uid]
             if override == TTLOverride.en.value:
                 widget.cur_override = bool(value)
             if override == TTLOverride.level.value:
@@ -719,14 +722,12 @@ class _DeviceManager:
                 await self.mi_connection.close()
                 self.mi_connection = None
             new_mi_connection = CommMonInj(self.monitor_cb, self.injection_status_cb,
-                    self.disconnect_cb)
+                                           self.disconnect_cb)
             try:
                 await new_mi_connection.connect(self.mi_addr, self.mi_port)
-            except asyncio.CancelledError:
-                logger.info("cancelled connection to moninj")
-                break
-            except:
-                logger.error("failed to connect to moninj. Is aqctl_moninj_proxy running?", exc_info=True)
+            except Exception:
+                logger.error("failed to connect to moninj. Is aqctl_moninj_proxy running?",
+                             exc_info=True)
                 await asyncio.sleep(10.)
                 self.reconnect_mi.set()
             else:
@@ -736,9 +737,9 @@ class _DeviceManager:
                 for ttl_channel in self.ttl_widgets.keys():
                     self.setup_ttl_monitoring(True, ttl_channel)
                 for bus_channel, channel in self.dds_widgets.keys():
-                    self.setup_dds_monitoring(True, bus_channel, channel)
+                     self.setup_dds_monitoring(True, bus_channel, channel)
                 for spi_channel, channel in self.dac_widgets.keys():
-                    self.setup_dac_monitoring(True, spi_channel, channel)
+                     self.setup_dac_monitoring(True, spi_channel, channel)
 
     async def close(self):
         self.mi_connector_task.cancel()
@@ -750,48 +751,233 @@ class _DeviceManager:
             await self.mi_connection.close()
 
 
-class _MonInjDock(QtWidgets.QDockWidget):
-    def __init__(self, name):
-        QtWidgets.QDockWidget.__init__(self, name)
+class Model(DictSyncTreeSepModel):
+    def __init__(self, init):
+        DictSyncTreeSepModel.__init__(self, "/", ["Channels"], init)
+
+    def clear(self):
+        for k in self.backing_store:
+            self._del_item(self, k.split(self.separator))
+        self.backing_store.clear()
+
+    def update(self, d):
+        for k, v in d.items():
+            self[v.to_model_path()] = v
+
+
+class _AddChannelDialog(QtWidgets.QDialog):
+    def __init__(self, parent, model):
+        QtWidgets.QDialog.__init__(self, parent=parent)
+        self.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
+        self.setWindowTitle("Add channels")
+
+        layout = QtWidgets.QVBoxLayout()
+        self.setLayout(layout)
+
+        self._model = model
+        self._tree_view = QtWidgets.QTreeView()
+        self._tree_view.setHeaderHidden(True)
+        self._tree_view.setSelectionBehavior(
+            QtWidgets.QAbstractItemView.SelectItems)
+        self._tree_view.setSelectionMode(
+            QtWidgets.QAbstractItemView.ExtendedSelection)
+        self._tree_view.setModel(self._model)
+        layout.addWidget(self._tree_view)
+
+        self._button_box = QtWidgets.QDialogButtonBox(
+            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
+        )
+        self._button_box.setCenterButtons(True)
+        self._button_box.accepted.connect(self.add_channels)
+        self._button_box.rejected.connect(self.reject)
+        layout.addWidget(self._button_box)
+
+    def add_channels(self):
+        selection = self._tree_view.selectedIndexes()
+        channels = []
+        for select in selection:
+            key = self._model.index_to_key(select)
+            if key is not None:
+                channels.append(self._model[key].ref)
+        self.channels = channels
+        self.accept()
+
+
+class _MonInjDock(QDockWidgetCloseDetect):
+    def __init__(self, name, manager):
+        QtWidgets.QDockWidget.__init__(self, "MonInj")
         self.setObjectName(name)
         self.setFeatures(QtWidgets.QDockWidget.DockWidgetMovable |
                          QtWidgets.QDockWidget.DockWidgetFloatable)
+        grid = LayoutWidget()
+        self.setWidget(grid)
+        self.manager = manager
+        self.widget_uids = None
+
+        newdock = QtWidgets.QToolButton()
+        newdock.setToolTip("Create new moninj dock")
+        newdock.setIcon(QtWidgets.QApplication.style().standardIcon(
+            QtWidgets.QStyle.SP_FileDialogNewFolder))
+        newdock.clicked.connect(lambda: self.manager.create_new_dock())
+        grid.addWidget(newdock, 0, 0)
+
+        self.channel_dialog = _AddChannelDialog(self, self.manager.channel_model)
+        self.channel_dialog.accepted.connect(self.add_channels)
+
+        dialog_btn = QtWidgets.QToolButton()
+        dialog_btn.setToolTip("Add channels")
+        dialog_btn.setIcon(
+            QtWidgets.QApplication.style().standardIcon(
+                QtWidgets.QStyle.SP_FileDialogListView))
+        dialog_btn.clicked.connect(self.channel_dialog.open)
+        grid.addWidget(dialog_btn, 0, 1)
+
+        self.label = DoubleClickLineEdit(name)
+        self.label.setStyleSheet("background:transparent;")
+        grid.addWidget(self.label, 0, 2)
+
+        scroll_area = VDragScrollArea(self)
+        grid.addWidget(scroll_area, 1, 0, 1, 10)
+        self.flow = DragDropFlowLayoutWidget()
+        scroll_area.setWidgetResizable(True)
+        scroll_area.setWidget(self.flow)
+        self.flow.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
+        self.flow.customContextMenuRequested.connect(self.custom_context_menu)
+
+    def custom_context_menu(self, pos):
+        index = self.flow._get_index(pos)
+        if index == -1:
+            return
+        menu = QtWidgets.QMenu()
+        delete_action = QtWidgets.QAction("Delete widget", menu)
+        delete_action.triggered.connect(partial(self.delete_widget, index))
+        menu.addAction(delete_action)
+        menu.exec_(self.flow.mapToGlobal(pos))
+
+    def delete_all_widgets(self):
+        for index in reversed(range(self.flow.count())):
+            self.delete_widget(index, True)
+
+
+    def delete_widget(self, index, checked):
+        widget = self.flow.itemAt(index).widget()
+        widget.hide()
+        self.manager.dm.setup_monitoring(False, widget)
+        self.flow.layout.takeAt(index)
+
+    def add_channels(self):
+        channels = self.channel_dialog.channels
+        self.layout_widgets(channels)
 
     def layout_widgets(self, widgets):
-        scroll_area = QtWidgets.QScrollArea()
-        self.setWidget(scroll_area)
-
-        grid = FlowLayout()
-        grid_widget = QtWidgets.QWidget()
-        grid_widget.setLayout(grid)
-
         for widget in sorted(widgets, key=lambda w: w.sort_key()):
-            grid.addWidget(widget)
+            widget.show()
+            self.manager.dm.setup_monitoring(True, widget)
+            self.flow.addWidget(widget)
 
-        scroll_area.setWidgetResizable(True)
-        scroll_area.setWidget(grid_widget)
+    def restore_widgets(self):
+        if self.widget_uids is not None:
+            widgets_by_uid = self.manager.dm.widgets_by_uid
+            widgets = list()
+            for uid in self.widget_uids:
+                if uid in widgets_by_uid:
+                    widgets.append(widgets_by_uid[uid])
+                else:
+                    logger.warning("removing moninj widget {}".format(uid))
+            self.layout_widgets(widgets)
+            self.widget_uids = None
+
+    def _save_widget_uids(self):
+        uids = []
+        for i in range(self.flow.count()):
+            uids.append(self.flow.itemAt(i).widget().uid())
+        return uids
+
+    def save_state(self):
+        return {
+            "dock_label": self.label.text(),
+            "widget_uids": self._save_widget_uids()
+        }
+
+    def restore_state(self, state):
+        try:
+            label = state["dock_label"]
+        except KeyError:
+            pass
+        else:
+            self.label._text = label
+            self.label.setText(label)
+        try:
+            self.widget_uids = state["widget_uids"]
+        except KeyError:
+            pass
 
 
 class MonInj:
-    def __init__(self, schedule_ctl):
-        self.ttl_dock = _MonInjDock("TTL")
-        self.dds_dock = _MonInjDock("DDS")
-        self.dac_dock = _MonInjDock("DAC")
-
+    def __init__(self, schedule_ctl, main_window):
+        self.docks = dict()
+        self.main_window = main_window
         self.dm = _DeviceManager(schedule_ctl)
-        self.dm.ttl_cb = lambda: self.ttl_dock.layout_widgets(
-                            self.dm.ttl_widgets.values())
-        self.dm.dds_cb = lambda: self.dds_dock.layout_widgets(
-                            self.dm.dds_widgets.values())
-        self.dm.dac_cb = lambda: self.dac_dock.layout_widgets(
-                            self.dm.dac_widgets.values())
+        self.dm.channels_cb = self.add_channels
+        self.channel_model = Model({})
 
-        self.subscriber = Subscriber("devices", self.dm.init_ddb, self.dm.notify)
+    def add_channels(self):
+        self.channel_model.clear()
+        self.channel_model.update(self.dm.widgets_by_uid)
+        for dock in self.docks.values():
+            dock.restore_widgets()
 
-    async def start(self, server, port):
-        await self.subscriber.connect(server, port)
+    def create_new_dock(self, add_to_area=True):
+        n = 0
+        name = "moninj0"
+        while name in self.docks:
+            n += 1
+            name = "moninj" + str(n)
+
+        dock = _MonInjDock(name, self)
+        self.docks[name] = dock
+        if add_to_area:
+            self.main_window.addDockWidget(QtCore.Qt.RightDockWidgetArea, dock)
+            dock.setFloating(True)
+        dock.sigClosed.connect(partial(self.on_dock_closed, name))
+        self.update_closable()
+        return dock
+
+    def on_dock_closed(self, name):
+        dock = self.docks[name]
+        del self.docks[name]
+        self.update_closable()
+        dock.delete_all_widgets()
+        dock.hide()  # dock may be parent, only delete on exit
+
+    def update_closable(self):
+        flags = (QtWidgets.QDockWidget.DockWidgetMovable |
+                 QtWidgets.QDockWidget.DockWidgetFloatable)
+        if len(self.docks) > 1:
+            flags |= QtWidgets.QDockWidget.DockWidgetClosable
+        for dock in self.docks.values():
+            dock.setFeatures(flags)
+
+    def first_moninj_dock(self):
+        if self.docks:
+            return None
+        dock = self.create_new_dock(False)
+        return dock
+
+    def save_state(self):
+        return {name: dock.save_state() for name, dock in self.docks.items()}
+
+    def restore_state(self, state):
+        if self.docks:
+            raise NotImplementedError
+        for name, dock_state in state.items():
+            dock = _MonInjDock(name, self)
+            self.docks[name] = dock
+            dock.restore_state(dock_state)
+            self.main_window.addDockWidget(QtCore.Qt.RightDockWidgetArea, dock)
+            dock.sigClosed.connect(partial(self.on_dock_closed, name))
+        self.update_closable()
 
     async def stop(self):
-        await self.subscriber.close()
         if self.dm is not None:
             await self.dm.close()

artiq/dashboard/schedule.py

@@ -15,9 +15,8 @@ logger = logging.getLogger(__name__)
 class Model(DictSyncModel):
     def __init__(self, init):
         DictSyncModel.__init__(self,
-            ["RID", "Pipeline", "Status", "Prio", "Due date",
-             "Revision", "File", "Class name"],
-            init)
+                               ["RID", "Pipeline", "Status", "Prio", "Due date",
+                                "Revision", "File", "Class name"], init)
 
     def sort_key(self, k, v):
         # order by priority, and then by due date and RID
@@ -96,14 +95,14 @@ class ScheduleDock(QtWidgets.QDockWidget):
 
         cw = QtGui.QFontMetrics(self.font()).averageCharWidth()
         h = self.table.horizontalHeader()
-        h.resizeSection(0, 7*cw)
-        h.resizeSection(1, 12*cw)
-        h.resizeSection(2, 16*cw)
-        h.resizeSection(3, 6*cw)
-        h.resizeSection(4, 16*cw)
-        h.resizeSection(5, 30*cw)
-        h.resizeSection(6, 20*cw)
-        h.resizeSection(7, 20*cw)
+        h.resizeSection(0, 7 * cw)
+        h.resizeSection(1, 12 * cw)
+        h.resizeSection(2, 16 * cw)
+        h.resizeSection(3, 6 * cw)
+        h.resizeSection(4, 16 * cw)
+        h.resizeSection(5, 30 * cw)
+        h.resizeSection(6, 20 * cw)
+        h.resizeSection(7, 20 * cw)
 
     def set_model(self, model):
         self.table_model = model
@@ -143,7 +142,7 @@ class ScheduleDock(QtWidgets.QDockWidget):
             selected_rid = self.table_model.row_to_key[row]
             pipeline = self.table_model.backing_store[selected_rid]["pipeline"]
             logger.info("Requesting termination of all "
-                "experiments in pipeline '%s'", pipeline)
+                        "experiments in pipeline '%s'", pipeline)
 
             rids = set()
             for rid, info in self.table_model.backing_store.items():
@@ -151,7 +150,6 @@ class ScheduleDock(QtWidgets.QDockWidget):
                     rids.add(rid)
             asyncio.ensure_future(self.request_term_multiple(rids))
 
-
     def save_state(self):
         return bytes(self.table.horizontalHeader().saveState())
 

artiq/dashboard/shortcuts.py

@@ -3,8 +3,6 @@ from functools import partial
 
 from PyQt5 import QtCore, QtWidgets
 
-from artiq.gui.tools import LayoutWidget
-
 
 logger = logging.getLogger(__name__)
 
@@ -35,7 +33,7 @@ class ShortcutsDock(QtWidgets.QDockWidget):
         for i in range(12):
             row = i + 1
 
-            layout.addWidget(QtWidgets.QLabel("F" + str(i+1)), row, 0)
+            layout.addWidget(QtWidgets.QLabel("F" + str(i + 1)), row, 0)
 
             label = QtWidgets.QLabel()
             label.setSizePolicy(QtWidgets.QSizePolicy.Ignored,
@@ -70,7 +68,7 @@ class ShortcutsDock(QtWidgets.QDockWidget):
                 "open": open,
                 "submit": submit
             }
-            shortcut = QtWidgets.QShortcut("F" + str(i+1), main_window)
+            shortcut = QtWidgets.QShortcut("F" + str(i + 1), main_window)
             shortcut.setContext(QtCore.Qt.ApplicationShortcut)
             shortcut.activated.connect(partial(self._activated, i))
 

artiq/dashboard/waveform.py

@@ -0,0 +1,914 @@
+import os
+import asyncio
+import logging
+import bisect
+import itertools
+import math
+
+from PyQt5 import QtCore, QtWidgets, QtGui
+
+import pyqtgraph as pg
+import numpy as np
+
+from sipyco.pc_rpc import AsyncioClient
+from sipyco import pyon
+
+from artiq.tools import exc_to_warning, short_format
+from artiq.coredevice import comm_analyzer
+from artiq.coredevice.comm_analyzer import WaveformType
+from artiq.gui.tools import LayoutWidget, get_open_file_name, get_save_file_name
+from artiq.gui.models import DictSyncTreeSepModel
+from artiq.gui.dndwidgets import VDragScrollArea, VDragDropSplitter
+
+
+logger = logging.getLogger(__name__)
+
+WAVEFORM_MIN_HEIGHT = 50
+WAVEFORM_MAX_HEIGHT = 200
+
+
+class ProxyClient():
+    def __init__(self, receive_cb, timeout=5, timer=5, timer_backoff=1.1):
+        self.receive_cb = receive_cb
+        self.receiver = None
+        self.addr = None
+        self.port_proxy = None
+        self.port = None
+        self._reconnect_event = asyncio.Event()
+        self.timeout = timeout
+        self.timer = timer
+        self.timer_cur = timer
+        self.timer_backoff = timer_backoff
+        self._reconnect_task = asyncio.ensure_future(self._reconnect())
+
+    def update_address(self, addr, port, port_proxy):
+        self.addr = addr
+        self.port = port
+        self.port_proxy = port_proxy
+        self._reconnect_event.set()
+
+    async def trigger_proxy_task(self):
+        remote = AsyncioClient()
+        try:
+            try:
+                if self.addr is None:
+                    logger.error("missing core_analyzer host in device db")
+                    return
+                await remote.connect_rpc(self.addr, self.port, "coreanalyzer_proxy_control")
+            except:
+                logger.error("error connecting to analyzer proxy control", exc_info=True)
+                return
+            await remote.trigger()
+        except:
+            logger.error("analyzer proxy reported failure", exc_info=True)
+        finally:
+            remote.close_rpc()
+
+    async def _reconnect(self):
+        while True:
+            await self._reconnect_event.wait()
+            self._reconnect_event.clear()
+            if self.receiver is not None:
+                await self.receiver.close()
+                self.receiver = None
+            new_receiver = comm_analyzer.AnalyzerProxyReceiver(
+                self.receive_cb, self.disconnect_cb)
+            try:
+                if self.addr is not None:
+                    await asyncio.wait_for(new_receiver.connect(self.addr, self.port_proxy),
+                                           self.timeout)
+                    logger.info("ARTIQ dashboard connected to analyzer proxy (%s)", self.addr)
+                    self.timer_cur = self.timer
+                    self.receiver = new_receiver
+                continue
+            except Exception:
+                logger.error("error connecting to analyzer proxy", exc_info=True)
+            try:
+                await asyncio.wait_for(self._reconnect_event.wait(), self.timer_cur)
+            except asyncio.TimeoutError:
+                self.timer_cur *= self.timer_backoff
+                self._reconnect_event.set()
+            else:
+                self.timer_cur = self.timer
+
+    async def close(self):
+        self._reconnect_task.cancel()
+        try:
+            await asyncio.wait_for(self._reconnect_task, None)
+        except asyncio.CancelledError:
+            pass
+        if self.receiver is not None:
+            await self.receiver.close()
+
+    def disconnect_cb(self):
+        logger.error("lost connection to analyzer proxy")
+        self._reconnect_event.set()
+
+
+class _BackgroundItem(pg.GraphicsWidgetAnchor, pg.GraphicsWidget):
+    def __init__(self, parent, rect):
+        pg.GraphicsWidget.__init__(self, parent)
+        pg.GraphicsWidgetAnchor.__init__(self)
+        self.item = QtWidgets.QGraphicsRectItem(rect, self)
+        brush = QtGui.QBrush(QtGui.QColor(10, 10, 10, 140))
+        self.item.setBrush(brush)
+
+
+class _BaseWaveform(pg.PlotWidget):
+    cursorMove = QtCore.pyqtSignal(float)
+
+    def __init__(self, name, width, precision, unit,
+                 parent=None, pen="r", stepMode="right", connect="finite"):
+        pg.PlotWidget.__init__(self,
+                               parent=parent,
+                               x=None,
+                               y=None,
+                               pen=pen,
+                               stepMode=stepMode,
+                               connect=connect)
+
+        self.setMinimumHeight(WAVEFORM_MIN_HEIGHT)
+        self.setMaximumHeight(WAVEFORM_MAX_HEIGHT)
+        self.setMenuEnabled(False)
+        self.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
+
+        self.name = name
+        self.width = width
+        self.precision = precision
+        self.unit = unit
+
+        self.x_data = []
+        self.y_data = []
+
+        self.plot_item = self.getPlotItem()
+        self.plot_item.hideButtons()
+        self.plot_item.hideAxis("top")
+        self.plot_item.getAxis("bottom").setStyle(showValues=False, tickLength=0)
+        self.plot_item.getAxis("left").setStyle(showValues=False, tickLength=0)
+        self.plot_item.setRange(yRange=(0, 1), padding=0.1)
+        self.plot_item.showGrid(x=True, y=True)
+
+        self.plot_data_item = self.plot_item.listDataItems()[0]
+        self.plot_data_item.setClipToView(True)
+
+        self.view_box = self.plot_item.getViewBox()
+        self.view_box.setMouseEnabled(x=True, y=False)
+        self.view_box.disableAutoRange(axis=pg.ViewBox.YAxis)
+        self.view_box.setLimits(xMin=0, minXRange=20)
+
+        self.title_label = pg.LabelItem(self.name, parent=self.plot_item)
+        self.title_label.anchor(itemPos=(0, 0), parentPos=(0, 0), offset=(0, 0))
+        self.title_label.setAttr('justify', 'left')
+        self.title_label.setZValue(10)
+
+        rect = self.title_label.boundingRect()
+        rect.setHeight(rect.height() * 2)
+        rect.setWidth(225)
+        self.label_bg = _BackgroundItem(parent=self.plot_item, rect=rect)
+        self.label_bg.anchor(itemPos=(0, 0), parentPos=(0, 0), offset=(0, 0))
+
+        self.cursor = pg.InfiniteLine()
+        self.cursor_y = None
+        self.addItem(self.cursor)
+
+        self.cursor_label = pg.LabelItem('', parent=self.plot_item)
+        self.cursor_label.anchor(itemPos=(0, 0), parentPos=(0, 0), offset=(0, 20))
+        self.cursor_label.setAttr('justify', 'left')
+        self.cursor_label.setZValue(10)
+
+    def setStoppedX(self, stopped_x):
+        self.stopped_x = stopped_x
+        self.view_box.setLimits(xMax=stopped_x)
+
+    def setData(self, data):
+        if len(data) == 0:
+            self.x_data, self.y_data = [], []
+        else:
+            self.x_data, self.y_data = zip(*data)
+
+    def onDataChange(self, data):
+        raise NotImplementedError
+
+    def onCursorMove(self, x):
+        self.cursor.setValue(x)
+        if len(self.x_data) < 1:
+            return
+        ind = bisect.bisect_left(self.x_data, x) - 1
+        dr = self.plot_data_item.dataRect()
+        self.cursor_y = None
+        if dr is not None and 0 <= ind < len(self.y_data):
+            self.cursor_y = self.y_data[ind]
+
+    def mouseMoveEvent(self, e):
+        if e.buttons() == QtCore.Qt.LeftButton \
+           and e.modifiers() == QtCore.Qt.ShiftModifier:
+            drag = QtGui.QDrag(self)
+            mime = QtCore.QMimeData()
+            drag.setMimeData(mime)
+            pixmapi = QtWidgets.QApplication.style().standardIcon(
+                QtWidgets.QStyle.SP_FileIcon)
+            drag.setPixmap(pixmapi.pixmap(32))
+            drag.exec_(QtCore.Qt.MoveAction)
+        else:
+            super().mouseMoveEvent(e)
+
+    def wheelEvent(self, e):
+        if e.modifiers() & QtCore.Qt.ControlModifier:
+            super().wheelEvent(e)
+
+    def mouseDoubleClickEvent(self, e):
+        pos = self.view_box.mapSceneToView(e.pos())
+        self.cursorMove.emit(pos.x())
+
+
+class BitWaveform(_BaseWaveform):
+    def __init__(self, name, width, precision, unit, parent=None):
+        _BaseWaveform.__init__(self, name, width, precision, unit, parent)
+        self.plot_item.showGrid(x=True, y=False)
+        self._arrows = []
+
+    def onDataChange(self, data):
+        try:
+            self.setData(data)
+            for arw in self._arrows:
+                self.removeItem(arw)
+            self._arrows = []
+            l = len(data)
+            display_y = np.empty(l)
+            display_x = np.empty(l)
+            display_map = {
+                "X": 0.5,
+                "1": 1,
+                "0": 0
+            }
+            previous_y = None
+            for i, coord in enumerate(data):
+                x, y = coord
+                dis_y = display_map[y]
+                if previous_y == y:
+                    arw = pg.ArrowItem(pxMode=True, angle=90)
+                    self.addItem(arw)
+                    self._arrows.append(arw)
+                    arw.setPos(x, dis_y)
+                display_y[i] = dis_y
+                display_x[i] = x
+                previous_y = y
+            self.plot_data_item.setData(x=display_x, y=display_y)
+        except:
+            logger.error("Error when displaying waveform: %s", self.name, exc_info=True)
+            for arw in self._arrows:
+                self.removeItem(arw)
+            self.plot_data_item.setData(x=[], y=[])
+
+    def onCursorMove(self, x):
+        _BaseWaveform.onCursorMove(self, x)
+        if self.cursor_y is not None:
+            self.cursor_label.setText(self.cursor_y)
+        else:
+            self.cursor_label.setText("")
+
+
+class AnalogWaveform(_BaseWaveform):
+    def __init__(self, name, width, precision, unit, parent=None):
+        _BaseWaveform.__init__(self, name, width, precision, unit, parent)
+
+    def onDataChange(self, data):
+        try:
+            self.setData(data)
+            self.plot_data_item.setData(x=self.x_data, y=self.y_data)
+            if len(data) > 0:
+                max_y = max(self.y_data)
+                min_y = min(self.y_data)
+                self.plot_item.setRange(yRange=(min_y, max_y), padding=0.1)
+        except:
+            logger.error("Error when displaying waveform: %s", self.name, exc_info=True)
+            self.plot_data_item.setData(x=[], y=[])
+
+    def onCursorMove(self, x):
+        _BaseWaveform.onCursorMove(self, x)
+        if self.cursor_y is not None:
+            t = short_format(self.cursor_y, {"precision": self.precision, "unit": self.unit})
+        else:
+            t = ""
+        self.cursor_label.setText(t)
+
+
+class BitVectorWaveform(_BaseWaveform):
+    def __init__(self, name, width, precision, unit, parent=None):
+        _BaseWaveform.__init__(self, name, width, precision, parent)
+        self._labels = []
+        self._format_string = "{:0=" + str(math.ceil(width / 4)) + "X}"
+        self.view_box.sigTransformChanged.connect(self._update_labels)
+        self.plot_item.showGrid(x=True, y=False)
+
+    def _update_labels(self):
+        for label in self._labels:
+            self.removeItem(label)
+        xmin, xmax = self.view_box.viewRange()[0]
+        left_label_i = bisect.bisect_left(self.x_data, xmin)
+        right_label_i = bisect.bisect_right(self.x_data, xmax) + 1
+        for i, j in itertools.pairwise(range(left_label_i, right_label_i)):
+            x1 = self.x_data[i]
+            x2 = self.x_data[j] if j < len(self.x_data) else self.stopped_x
+            lbl = self._labels[i]
+            bounds = lbl.boundingRect()
+            bounds_view = self.view_box.mapSceneToView(bounds)
+            if bounds_view.boundingRect().width() < x2 - x1:
+                self.addItem(lbl)
+
+    def onDataChange(self, data):
+        try:
+            self.setData(data)
+            for lbl in self._labels:
+                self.plot_item.removeItem(lbl)
+            self._labels = []
+            l = len(data)
+            display_x = np.empty(l * 2)
+            display_y = np.empty(l * 2)
+            for i, coord in enumerate(data):
+                x, y = coord
+                display_x[i * 2] = x
+                display_x[i * 2 + 1] = x
+                display_y[i * 2] = 0
+                display_y[i * 2 + 1] = int(int(y) != 0)
+                lbl = pg.TextItem(
+                    self._format_string.format(int(y, 2)), anchor=(0, 0.5))
+                lbl.setPos(x, 0.5)
+                lbl.setTextWidth(100)
+                self._labels.append(lbl)
+            self.plot_data_item.setData(x=display_x, y=display_y)
+        except:
+            logger.error("Error when displaying waveform: %s", self.name, exc_info=True)
+            for lbl in self._labels:
+                self.plot_item.removeItem(lbl)
+            self.plot_data_item.setData(x=[], y=[])
+
+    def onCursorMove(self, x):
+        _BaseWaveform.onCursorMove(self, x)
+        if self.cursor_y is not None:
+            t = self._format_string.format(int(self.cursor_y, 2))
+        else:
+            t = ""
+        self.cursor_label.setText(t)
+
+
+class LogWaveform(_BaseWaveform):
+    def __init__(self, name, width, precision, unit, parent=None):
+        _BaseWaveform.__init__(self, name, width, precision, parent)
+        self.plot_data_item.opts['pen'] = None
+        self.plot_data_item.opts['symbol'] = 'x'
+        self._labels = []
+        self.plot_item.showGrid(x=True, y=False)
+
+    def onDataChange(self, data):
+        try:
+            self.setData(data)
+            for lbl in self._labels:
+                self.plot_item.removeItem(lbl)
+            self._labels = []
+            self.plot_data_item.setData(
+                x=self.x_data, y=np.ones(len(self.x_data)))
+            if len(data) == 0:
+                return
+            old_x = data[0][0]
+            old_msg = data[0][1]
+            for x, msg in data[1:]:
+                if x == old_x:
+                    old_msg += "\n" + msg
+                else:
+                    lbl = pg.TextItem(old_msg)
+                    self.addItem(lbl)
+                    self._labels.append(lbl)
+                    lbl.setPos(old_x, 1)
+                    old_msg = msg
+                    old_x = x
+            lbl = pg.TextItem(old_msg)
+            self.addItem(lbl)
+            self._labels.append(lbl)
+            lbl.setPos(old_x, 1)
+        except:
+            logger.error("Error when displaying waveform: %s", self.name, exc_info=True)
+            for lbl in self._labels:
+                self.plot_item.removeItem(lbl)
+            self.plot_data_item.setData(x=[], y=[])
+
+
+class _WaveformView(QtWidgets.QWidget):
+    cursorMove = QtCore.pyqtSignal(float)
+
+    def __init__(self, parent):
+        QtWidgets.QWidget.__init__(self, parent=parent)
+
+        self._stopped_x = None
+        self._timescale = 1
+        self._cursor_x = 0
+
+        layout = QtWidgets.QVBoxLayout()
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
+        self.setLayout(layout)
+
+        self._ref_axis = pg.PlotWidget()
+        self._ref_axis.hideAxis("bottom")
+        self._ref_axis.hideAxis("left")
+        self._ref_axis.hideButtons()
+        self._ref_axis.setFixedHeight(45)
+        self._ref_axis.setMenuEnabled(False)
+        self._top = pg.AxisItem("top")
+        self._top.setScale(1e-12)
+        self._top.setLabel(units="s")
+        self._ref_axis.setAxisItems({"top": self._top})
+        layout.addWidget(self._ref_axis)
+
+        self._ref_vb = self._ref_axis.getPlotItem().getViewBox()
+        self._ref_vb.setFixedHeight(0)
+        self._ref_vb.setMouseEnabled(x=True, y=False)
+        self._ref_vb.setLimits(xMin=0)
+
+        scroll_area = VDragScrollArea(self)
+        scroll_area.setWidgetResizable(True)
+        scroll_area.setContentsMargins(0, 0, 0, 0)
+        scroll_area.setFrameShape(QtWidgets.QFrame.NoFrame)
+        scroll_area.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
+        layout.addWidget(scroll_area)
+
+        self._splitter = VDragDropSplitter(parent=scroll_area)
+        self._splitter.setHandleWidth(1)
+        scroll_area.setWidget(self._splitter)
+
+        self.cursorMove.connect(self.onCursorMove)
+
+        self.confirm_delete_dialog = QtWidgets.QMessageBox(self)
+        self.confirm_delete_dialog.setIcon(
+            QtWidgets.QMessageBox.Icon.Warning
+        )
+        self.confirm_delete_dialog.setText("Delete all waveforms?")
+        self.confirm_delete_dialog.setStandardButtons(
+            QtWidgets.QMessageBox.Ok | QtWidgets.QMessageBox.Cancel
+        )
+        self.confirm_delete_dialog.setDefaultButton(
+            QtWidgets.QMessageBox.Ok
+        )
+
+    def setModel(self, model):
+        self._model = model
+        self._model.dataChanged.connect(self.onDataChange)
+        self._model.rowsInserted.connect(self.onInsert)
+        self._model.rowsRemoved.connect(self.onRemove)
+        self._model.rowsMoved.connect(self.onMove)
+        self._splitter.dropped.connect(self._model.move)
+        self.confirm_delete_dialog.accepted.connect(self._model.clear)
+
+    def setTimescale(self, timescale):
+        self._timescale = timescale
+        self._top.setScale(1e-12 * timescale)
+
+    def setStoppedX(self, stopped_x):
+        self._stopped_x = stopped_x
+        self._ref_vb.setLimits(xMax=stopped_x)
+        self._ref_vb.setRange(xRange=(0, stopped_x))
+        for i in range(self._model.rowCount()):
+            self._splitter.widget(i).setStoppedX(stopped_x)
+
+    def resetZoom(self):
+        if self._stopped_x is not None:
+            self._ref_vb.setRange(xRange=(0, self._stopped_x))
+
+    def onDataChange(self, top, bottom, roles):
+        self.cursorMove.emit(0)
+        first = top.row()
+        last = bottom.row()
+        data_row = self._model.headers.index("data")
+        for i in range(first, last + 1):
+            data = self._model.data(self._model.index(i, data_row))
+            self._splitter.widget(i).onDataChange(data)
+
+    def onInsert(self, parent, first, last):
+        for i in range(first, last + 1):
+            w = self._create_waveform(i)
+            self._splitter.insertWidget(i, w)
+        self._resize()
+
+    def onRemove(self, parent, first, last):
+        for i in reversed(range(first, last + 1)):
+            w = self._splitter.widget(i)
+            w.deleteLater()
+        self._splitter.refresh()
+        self._resize()
+
+    def onMove(self, src_parent, src_start, src_end, dest_parent, dest_row):
+        w = self._splitter.widget(src_start)
+        self._splitter.insertWidget(dest_row, w)
+
+    def onCursorMove(self, x):
+        self._cursor_x = x
+        for i in range(self._model.rowCount()):
+            self._splitter.widget(i).onCursorMove(x)
+
+    def _create_waveform(self, row):
+        name, ty, width, precision, unit = (
+            self._model.data(self._model.index(row, i)) for i in range(5))
+        waveform_cls = {
+            WaveformType.BIT: BitWaveform,
+            WaveformType.VECTOR: BitVectorWaveform,
+            WaveformType.ANALOG: AnalogWaveform,
+            WaveformType.LOG: LogWaveform
+        }[ty]
+        w = waveform_cls(name, width, precision, unit, parent=self._splitter)
+        w.setXLink(self._ref_vb)
+        w.setStoppedX(self._stopped_x)
+        w.cursorMove.connect(self.cursorMove)
+        w.onCursorMove(self._cursor_x)
+        action = QtWidgets.QAction("Delete waveform", w)
+        action.triggered.connect(lambda: self._delete_waveform(w))
+        w.addAction(action)
+        action = QtWidgets.QAction("Delete all waveforms", w)
+        action.triggered.connect(self.confirm_delete_dialog.open)
+        w.addAction(action)
+        return w
+
+    def _delete_waveform(self, waveform):
+        row = self._splitter.indexOf(waveform)
+        self._model.pop(row)
+
+    def _resize(self):
+        self._splitter.setFixedHeight(
+            int((WAVEFORM_MIN_HEIGHT + WAVEFORM_MAX_HEIGHT) * self._model.rowCount() / 2))
+
+
+class _WaveformModel(QtCore.QAbstractTableModel):
+    def __init__(self):
+        self.backing_struct = []
+        self.headers = ["name", "type", "width", "precision", "unit", "data"]
+        QtCore.QAbstractTableModel.__init__(self)
+
+    def rowCount(self, parent=QtCore.QModelIndex()):
+        return len(self.backing_struct)
+
+    def columnCount(self, parent=QtCore.QModelIndex()):
+        return len(self.headers)
+
+    def data(self, index, role=QtCore.Qt.DisplayRole):
+        if index.isValid():
+            return self.backing_struct[index.row()][index.column()]
+        return None
+
+    def extend(self, data):
+        length = len(self.backing_struct)
+        len_data = len(data)
+        self.beginInsertRows(QtCore.QModelIndex(), length, length + len_data - 1)
+        self.backing_struct.extend(data)
+        self.endInsertRows()
+
+    def pop(self, row):
+        self.beginRemoveRows(QtCore.QModelIndex(), row, row)
+        self.backing_struct.pop(row)
+        self.endRemoveRows()
+
+    def move(self, src, dest):
+        if src == dest:
+            return
+        if src < dest:
+            dest, src = src, dest
+        self.beginMoveRows(QtCore.QModelIndex(), src, src, QtCore.QModelIndex(), dest)
+        self.backing_struct.insert(dest, self.backing_struct.pop(src))
+        self.endMoveRows()
+
+    def clear(self):
+        self.beginRemoveRows(QtCore.QModelIndex(), 0, len(self.backing_struct) - 1)
+        self.backing_struct.clear()
+        self.endRemoveRows()
+
+    def export_list(self):
+        return [[row[0], row[1].value, *row[2:5]] for row in self.backing_struct]
+
+    def import_list(self, channel_list):
+        self.clear()
+        data = [[row[0], WaveformType(row[1]), *row[2:5], []] for row in channel_list]
+        self.extend(data)
+
+    def update_data(self, waveform_data, top, bottom):
+        name_col = self.headers.index("name")
+        data_col = self.headers.index("data")
+        for i in range(top, bottom):
+            name = self.data(self.index(i, name_col))
+            self.backing_struct[i][data_col] = waveform_data.get(name, [])
+            self.dataChanged.emit(self.index(i, data_col),
+                                  self.index(i, data_col))
+
+    def update_all(self, waveform_data):
+        self.update_data(waveform_data, 0, self.rowCount())
+
+
+class _CursorTimeControl(QtWidgets.QLineEdit):
+    submit = QtCore.pyqtSignal(float)
+
+    def __init__(self, parent):
+        QtWidgets.QLineEdit.__init__(self, parent=parent)
+        self._text = ""
+        self._value = 0
+        self._timescale = 1
+        self.setDisplayValue(0)
+        self.textChanged.connect(self._onTextChange)
+        self.returnPressed.connect(self._onReturnPress)
+
+    def setTimescale(self, timescale):
+        self._timescale = timescale
+
+    def _onTextChange(self, text):
+        self._text = text
+
+    def setDisplayValue(self, value):
+        self._value = value
+        self._text = pg.siFormat(value * 1e-12 * self._timescale,
+                                 suffix="s",
+                                 allowUnicode=False,
+                                 precision=15)
+        self.setText(self._text)
+
+    def _setValueFromText(self, text):
+        try:
+            self._value = pg.siEval(text) * (1e12 / self._timescale)
+        except:
+            logger.error("Error when parsing cursor time input", exc_info=True)
+
+    def _onReturnPress(self):
+        self._setValueFromText(self._text)
+        self.setDisplayValue(self._value)
+        self.submit.emit(self._value)
+        self.clearFocus()
+
+
+class Model(DictSyncTreeSepModel):
+    def __init__(self, init):
+        DictSyncTreeSepModel.__init__(self, "/", ["Channels"], init)
+
+    def clear(self):
+        for k in self.backing_store:
+            self._del_item(self, k.split(self.separator))
+        self.backing_store.clear()
+
+    def update(self, d):
+        for k, v in d.items():
+            self[k] = v
+
+
+class _AddChannelDialog(QtWidgets.QDialog):
+    def __init__(self, parent, model):
+        QtWidgets.QDialog.__init__(self, parent=parent)
+        self.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
+        self.setWindowTitle("Add channels")
+
+        layout = QtWidgets.QVBoxLayout()
+        self.setLayout(layout)
+
+        self._model = model
+        self._tree_view = QtWidgets.QTreeView()
+        self._tree_view.setHeaderHidden(True)
+        self._tree_view.setSelectionBehavior(
+            QtWidgets.QAbstractItemView.SelectItems)
+        self._tree_view.setSelectionMode(
+            QtWidgets.QAbstractItemView.ExtendedSelection)
+        self._tree_view.setModel(self._model)
+        layout.addWidget(self._tree_view)
+
+        self._button_box = QtWidgets.QDialogButtonBox(
+            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
+        )
+        self._button_box.setCenterButtons(True)
+        self._button_box.accepted.connect(self.add_channels)
+        self._button_box.rejected.connect(self.reject)
+        layout.addWidget(self._button_box)
+
+    def add_channels(self):
+        selection = self._tree_view.selectedIndexes()
+        channels = []
+        for select in selection:
+            key = self._model.index_to_key(select)
+            if key is not None:
+                channels.append([key, *self._model[key].ref, []])
+        self.channels = channels
+        self.accept()
+
+
+class WaveformDock(QtWidgets.QDockWidget):
+    def __init__(self, timeout, timer, timer_backoff):
+        QtWidgets.QDockWidget.__init__(self, "Waveform")
+        self.setObjectName("Waveform")
+        self.setFeatures(
+            QtWidgets.QDockWidget.DockWidgetMovable | QtWidgets.QDockWidget.DockWidgetFloatable)
+
+        self._channel_model = Model({})
+        self._waveform_model = _WaveformModel()
+
+        self._ddb = None
+        self._dump = None
+
+        self._waveform_data = {
+            "timescale": 1,
+            "stopped_x": None,
+            "logs": dict(),
+            "data": dict(),
+        }
+
+        self._current_dir = os.getcwd()
+
+        self.proxy_client = ProxyClient(self.on_dump_receive,
+                                        timeout,
+                                        timer,
+                                        timer_backoff)
+
+        grid = LayoutWidget()
+        self.setWidget(grid)
+
+        self._menu_btn = QtWidgets.QPushButton()
+        self._menu_btn.setIcon(
+            QtWidgets.QApplication.style().standardIcon(
+                QtWidgets.QStyle.SP_FileDialogStart))
+        grid.addWidget(self._menu_btn, 0, 0)
+
+        self._request_dump_btn = QtWidgets.QToolButton()
+        self._request_dump_btn.setToolTip("Fetch analyzer data from device")
+        self._request_dump_btn.setIcon(
+            QtWidgets.QApplication.style().standardIcon(
+                QtWidgets.QStyle.SP_BrowserReload))
+        self._request_dump_btn.clicked.connect(
+            lambda: asyncio.ensure_future(exc_to_warning(self.proxy_client.trigger_proxy_task())))
+        grid.addWidget(self._request_dump_btn, 0, 1)
+
+        self._add_channel_dialog = _AddChannelDialog(self, self._channel_model)
+        self._add_channel_dialog.accepted.connect(self._add_channels)
+
+        self._add_btn = QtWidgets.QToolButton()
+        self._add_btn.setToolTip("Add channels...")
+        self._add_btn.setIcon(
+            QtWidgets.QApplication.style().standardIcon(
+                QtWidgets.QStyle.SP_FileDialogListView))
+        self._add_btn.clicked.connect(self._add_channel_dialog.open)
+        grid.addWidget(self._add_btn, 0, 2)
+
+        self._file_menu = QtWidgets.QMenu()
+        self._add_async_action("Open trace...", self.load_trace)
+        self._add_async_action("Save trace...", self.save_trace)
+        self._add_async_action("Save trace as VCD...", self.save_vcd)
+        self._add_async_action("Open channel list...", self.load_channels)
+        self._add_async_action("Save channel list...", self.save_channels)
+        self._menu_btn.setMenu(self._file_menu)
+
+        self._waveform_view = _WaveformView(self)
+        self._waveform_view.setModel(self._waveform_model)
+        grid.addWidget(self._waveform_view, 1, 0, colspan=12)
+
+        self._reset_zoom_btn = QtWidgets.QToolButton()
+        self._reset_zoom_btn.setToolTip("Reset zoom")
+        self._reset_zoom_btn.setIcon(
+            QtWidgets.QApplication.style().standardIcon(
+                QtWidgets.QStyle.SP_TitleBarMaxButton))
+        self._reset_zoom_btn.clicked.connect(self._waveform_view.resetZoom)
+        grid.addWidget(self._reset_zoom_btn, 0, 3)
+
+        self._cursor_control = _CursorTimeControl(self)
+        self._waveform_view.cursorMove.connect(self._cursor_control.setDisplayValue)
+        self._cursor_control.submit.connect(self._waveform_view.onCursorMove)
+        grid.addWidget(self._cursor_control, 0, 4, colspan=6)
+
+    def _add_async_action(self, label, coro):
+        action = QtWidgets.QAction(label, self)
+        action.triggered.connect(
+            lambda: asyncio.ensure_future(exc_to_warning(coro())))
+        self._file_menu.addAction(action)
+
+    def _add_channels(self):
+        channels = self._add_channel_dialog.channels
+        count = self._waveform_model.rowCount()
+        self._waveform_model.extend(channels)
+        self._waveform_model.update_data(self._waveform_data['data'],
+                                         count,
+                                         count + len(channels))
+
+    def on_dump_receive(self, dump):
+        self._dump = dump
+        decoded_dump = comm_analyzer.decode_dump(dump)
+        waveform_data = comm_analyzer.decoded_dump_to_waveform_data(self._ddb, decoded_dump)
+        self._waveform_data.update(waveform_data)
+        self._channel_model.update(self._waveform_data['logs'])
+        self._waveform_model.update_all(self._waveform_data['data'])
+        self._waveform_view.setStoppedX(self._waveform_data['stopped_x'])
+        self._waveform_view.setTimescale(self._waveform_data['timescale'])
+        self._cursor_control.setTimescale(self._waveform_data['timescale'])
+
+    async def load_trace(self):
+        try:
+            filename = await get_open_file_name(
+                self,
+                "Load Analyzer Trace",
+                self._current_dir,
+                "All files (*.*)")
+        except asyncio.CancelledError:
+            return
+        self._current_dir = os.path.dirname(filename)
+        try:
+            with open(filename, 'rb') as f:
+                dump = f.read()
+            self.on_dump_receive(dump)
+        except:
+            logger.error("Failed to open analyzer trace", exc_info=True)
+
+    async def save_trace(self):
+        if self._dump is None:
+            logger.error("No analyzer trace stored in dashboard, "
+                         "try loading from file or fetching from device")
+            return
+        try:
+            filename = await get_save_file_name(
+                self,
+                "Save Analyzer Trace",
+                self._current_dir,
+                "All files (*.*)")
+        except asyncio.CancelledError:
+            return
+        self._current_dir = os.path.dirname(filename)
+        try:
+            with open(filename, 'wb') as f:
+                f.write(self._dump)
+        except:
+            logger.error("Failed to save analyzer trace", exc_info=True)
+
+    async def save_vcd(self):
+        if self._dump is None:
+            logger.error("No analyzer trace stored in dashboard, "
+                         "try loading from file or fetching from device")
+            return
+        try:
+            filename = await get_save_file_name(
+                self,
+                "Save VCD",
+                self._current_dir,
+                "All files (*.*)")
+        except asyncio.CancelledError:
+            return
+        self._current_dir = os.path.dirname(filename)
+        try:
+            decoded_dump = comm_analyzer.decode_dump(self._dump)
+            with open(filename, 'w') as f:
+                comm_analyzer.decoded_dump_to_vcd(f, self._ddb, decoded_dump)
+        except:
+            logger.error("Failed to save trace as VCD", exc_info=True)
+
+    async def load_channels(self):
+        try:
+            filename = await get_open_file_name(
+                self,
+                "Open channel list",
+                self._current_dir,
+                "PYON files (*.pyon);;All files (*.*)")
+        except asyncio.CancelledError:
+            return
+        self._current_dir = os.path.dirname(filename)
+        try:
+            channel_list = pyon.load_file(filename)
+            self._waveform_model.import_list(channel_list)
+            self._waveform_model.update_all(self._waveform_data['data'])
+        except:
+            logger.error("Failed to open channel list", exc_info=True)
+
+    async def save_channels(self):
+        try:
+            filename = await get_save_file_name(
+                self,
+                "Save channel list",
+                self._current_dir,
+                "PYON files (*.pyon);;All files (*.*)")
+        except asyncio.CancelledError:
+            return
+        self._current_dir = os.path.dirname(filename)
+        try:
+            channel_list = self._waveform_model.export_list()
+            pyon.store_file(filename, channel_list)
+        except:
+            logger.error("Failed to save channel list", exc_info=True)
+
+    def _process_ddb(self):
+        channel_list = comm_analyzer.get_channel_list(self._ddb)
+        self._channel_model.clear()
+        self._channel_model.update(channel_list)
+        desc = self._ddb.get("core_analyzer")
+        if desc is not None:
+            addr = desc["host"]
+            port_proxy = desc.get("port_proxy", 1385)
+            port = desc.get("port", 1386)
+            self.proxy_client.update_address(addr, port, port_proxy)
+        else:
+            self.proxy_client.update_address(None, None, None)
+
+    def init_ddb(self, ddb):
+        self._ddb = ddb
+        self._process_ddb()
+        return ddb
+
+    def notify_ddb(self, mod):
+        self._process_ddb()
+
+    async def stop(self):
+        if self.proxy_client is not None:
+            await self.proxy_client.close()

artiq/examples/artiq_ipython_notebook.ipynb

@@ -127,7 +127,7 @@
     "# let's connect to the master\n",
     "\n",
     "schedule, exps, datasets = [\n",
-    "    Client(\"::1\", 3251, \"master_\" + i) for i in\n",
+    "    Client(\"::1\", 3251, i) for i in\n",
     "    \"schedule experiment_db dataset_db\".split()]\n",
     "\n",
     "print(\"current schedule\")\n",

artiq/examples/kasli_shuttler/kasli_shuttler.json

@@ -6,6 +6,7 @@
     "peripherals": [
         {
             "type": "shuttler",
+            "hw_rev": "v1.1",
             "ports": [0]
         },
         {

artiq/examples/kasli_suservo/device_db.py

@@ -5,7 +5,11 @@ device_db = {
         "type": "local",
         "module": "artiq.coredevice.core",
         "class": "Core",
-        "arguments": {"host": core_addr, "ref_period": 1e-9}
+        "arguments": {
+            "host": core_addr,
+            "ref_period": 1e-9,
+            "analyzer_proxy": "core_analyzer"
+        }
     },
     "core_log": {
         "type": "controller",
@@ -20,6 +24,13 @@ device_db = {
         "port": 1384,
         "command": "aqctl_moninj_proxy --port-proxy {port_proxy} --port-control {port} --bind {bind} " + core_addr
     },
+    "core_analyzer": {
+        "type": "controller",
+        "host": "::1",
+        "port_proxy": 1385,
+        "port": 1386,
+        "command": "aqctl_coreanalyzer_proxy --port-proxy {port_proxy} --port-control {port} --bind {bind} " + core_addr
+    },
     "core_cache": {
         "type": "local",
         "module": "artiq.coredevice.cache",

artiq/examples/kc705_nist_clock/device_db.py

@@ -9,7 +9,11 @@ device_db = {
         "type": "local",
         "module": "artiq.coredevice.core",
         "class": "Core",
-        "arguments": {"host": core_addr, "ref_period": 1e-9}
+        "arguments": {
+            "host": core_addr,
+            "ref_period": 1e-9,
+            "analyzer_proxy": "core_analyzer"
+        }
     },
     "core_log": {
         "type": "controller",
@@ -24,6 +28,13 @@ device_db = {
         "port": 1384,
         "command": "aqctl_moninj_proxy --port-proxy {port_proxy} --port-control {port} --bind {bind} " + core_addr
     },
+    "core_analyzer": {
+        "type": "controller",
+        "host": "::1",
+        "port_proxy": 1385,
+        "port": 1386,
+        "command": "aqctl_coreanalyzer_proxy --port-proxy {port_proxy} --port-control {port} --bind {bind} " + core_addr
+    },
     "core_cache": {
         "type": "local",
         "module": "artiq.coredevice.cache",

artiq/examples/no_hardware/repository/interactive.py

@@ -0,0 +1,34 @@
+from artiq.experiment import *
+
+
+class InteractiveDemo(EnvExperiment):
+    def build(self):
+        pass
+
+    def run(self):
+        print("Waiting for user input...")
+        with self.interactive(title="Interactive Demo") as interactive:
+            interactive.setattr_argument("pyon_value",
+                                         PYONValue(self.get_dataset("foo", default=42)))
+            interactive.setattr_argument("number", NumberValue(42e-6,
+                                         unit="us",
+                                         precision=4))
+            interactive.setattr_argument("integer", NumberValue(42,
+                                         step=1, precision=0))
+            interactive.setattr_argument("string", StringValue("Hello World"))
+            interactive.setattr_argument("scan", Scannable(global_max=400,
+                                         default=NoScan(325),
+                                         precision=6))
+            interactive.setattr_argument("boolean", BooleanValue(True), "Group")
+            interactive.setattr_argument("enum",
+                                         EnumerationValue(["foo", "bar", "quux"], "foo"),
+                                         "Group")
+        print("Done! Values:")
+        print(interactive.pyon_value)
+        print(interactive.boolean)
+        print(interactive.enum)
+        print(interactive.number, type(interactive.number))
+        print(interactive.integer, type(interactive.integer))
+        print(interactive.string)
+        for i in interactive.scan:
+            print(i)

artiq/firmware/Cargo.lock

@@ -1,10 +1,13 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+# And yet, manual edits have been made. Crate yanking should be illegal.
+version = 3
+
 [[package]]
 name = "addr2line"
-version = "0.14.0"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c0929d69e78dd9bf5408269919fcbcaeb2e35e5d43e5815517cdc6a8e11a423"
+checksum = "3e61f2b7f93d2c7d2b08263acaa4a363b3e276806c68af6134c44f523bf1aacd"
 dependencies = [
  "cpp_demangle",
  "fallible-iterator",
@@ -28,15 +31,20 @@ checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
 name = "ahash"
-version = "0.4.8"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0453232ace82dee0dd0b4c87a59bd90f7b53b314f3e0f61fe2ee7c8a16482289"
+checksum = "efa60d2eadd8b12a996add391db32bd1153eac697ba4869660c0016353611426"
+dependencies = [
+ "getrandom",
+ "once_cell",
+ "version_check",
+]
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.15"
+version = "0.7.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
+checksum = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
 dependencies = [
  "memchr",
 ]
@@ -45,6 +53,12 @@ dependencies = [
 name = "alloc_list"
 version = "0.0.0"
 
+[[package]]
+name = "arrayvec"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96d30a06541fbafbc7f82ed10c06164cfbd2c401138f6addd8404629c4b16711"
+
 [[package]]
 name = "bare-metal"
 version = "0.2.5"
@@ -99,6 +113,7 @@ name = "bootloader"
 version = "0.0.0"
 dependencies = [
  "addr2line",
+ "ahash",
  "board_misoc",
  "build_misoc",
  "byteorder",
@@ -108,15 +123,18 @@ dependencies = [
  "dlmalloc",
  "fortanix-sgx-abi",
  "getopts",
+ "getrandom",
  "hashbrown",
  "hermit-abi",
- "libc 0.2.79",
- "memchr",
+ "libc 0.2.99",
  "miniz_oxide 0.4.0",
+ "object",
+ "once_cell",
  "riscv",
  "rustc-demangle",
  "smoltcp",
  "unicode-width",
+ "version_check",
  "wasi",
 ]
 
@@ -138,9 +156,9 @@ checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
 [[package]]
 name = "cc"
-version = "1.0.60"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef611cc68ff783f18535d77ddd080185275713d852c4f5cbb6122c462a7a825c"
+checksum = "e70cc2f62c6ce1868963827bd677764c62d07c3d9a3e1fb1177ee1a9ab199eb2"
 
 [[package]]
 name = "cfg-if"
@@ -156,9 +174,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.39"
+version = "0.1.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3748f82c7d366a0b4950257d19db685d4958d2fa27c6d164a3f069fec42b748b"
+checksum = "20b1438ef42c655665a8ab2c1c6d605a305f031d38d9be689ddfef41a20f3aa2"
 
 [[package]]
 name = "cpp_demangle"
@@ -180,9 +198,9 @@ dependencies = [
 
 [[package]]
 name = "crc32fast"
-version = "1.4.2"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3"
+checksum = "b3855a8a784b474f333699ef2bbca9db2c4a1f6d9088a90a2d25b1eb53111eaa"
 dependencies = [
  "cfg-if 1.0.0",
 ]
@@ -199,7 +217,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "332570860c2edf2d57914987bf9e24835425f75825086b6ba7d1e6a3e4f1f254"
 dependencies = [
- "libc 0.2.79",
+ "libc 0.2.99",
 ]
 
 [[package]]
@@ -245,7 +263,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f54427cfd1c7829e2a139fcefea601bf088ebca651d2bf53ebc600eac295dae"
 dependencies = [
  "crc32fast",
- "miniz_oxide 0.7.3",
+ "miniz_oxide 0.7.2",
 ]
 
 [[package]]
@@ -257,9 +275,9 @@ checksum = "c56c422ef86062869b2d57ae87270608dc5929969dd130a6e248979cf4fb6ca6"
 [[package]]
 name = "fringe"
 version = "1.2.1"
-source = "git+https://git.m-labs.hk/M-Labs/libfringe.git?rev=3ecbe5#3ecbe53f7644b18ee46ebd5b2ca12c9cbceec43a"
+source = "git+https://git.m-labs.hk/M-Labs/libfringe.git?rev=53a964#53a964a63d2d384b22ae1949a471a732003a30b9"
 dependencies = [
- "libc 0.2.79",
+ "libc 0.2.99",
 ]
 
 [[package]]
@@ -272,10 +290,21 @@ dependencies = [
 ]
 
 [[package]]
-name = "gimli"
-version = "0.23.0"
+name = "getrandom"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6503fe142514ca4799d4c26297c4248239fe8838d827db6bd6065c6ed29a6ce"
+checksum = "ee8025cf36f917e6a52cce185b7c7177689b838b7ec138364e50cc2277a56cf4"
+dependencies = [
+ "cfg-if 0.1.10",
+ "libc 0.2.99",
+ "wasi",
+]
+
+[[package]]
+name = "gimli"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0a01e0497841a3b2db4f8afa483cce65f7e96a3498bd6c541734792aeac8fe7"
 dependencies = [
  "fallible-iterator",
  "stable_deref_trait",
@@ -283,20 +312,20 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.9.0"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00d63df3d41950fb462ed38308eea019113ad1508da725bbedcd0fa5a85ef5f7"
+checksum = "362385356d610bd1e5a408ddf8d022041774b683f345a1d2cfcb4f60f8ae2db5"
 dependencies = [
  "ahash",
 ]
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.17"
+version = "0.1.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5aca5565f760fb5b220e499d72710ed156fdb74e631659e99377d9ebfbd13ae8"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
 dependencies = [
- "libc 0.2.79",
+ "libc 0.2.99",
 ]
 
 [[package]]
@@ -337,9 +366,9 @@ version = "0.1.0"
 
 [[package]]
 name = "libc"
-version = "0.2.79"
+version = "0.2.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
+checksum = "a7f823d141fe0a24df1e23b4af4e3c7ba9e5966ec514ea068c93024aa7deb765"
 
 [[package]]
 name = "log"
@@ -379,9 +408,9 @@ checksum = "0ca88d725a0a943b096803bd34e73a4437208b6077654cc4ecb2947a5f91618d"
 
 [[package]]
 name = "memchr"
-version = "2.3.4"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
 [[package]]
 name = "miniz_oxide"
@@ -394,23 +423,29 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide"
-version = "0.7.3"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87dfd01fe195c66b572b37921ad8803d010623c0aca821bea2302239d155cdae"
+checksum = "9d811f3e15f28568be3407c8e7fdb6514c1cda3cb30683f15b6a1a1dc4ea14a7"
 dependencies = [
  "adler 1.0.2",
 ]
 
 [[package]]
 name = "object"
-version = "0.22.0"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d3b63360ec3cb337817c2dbd47ab4a0f170d285d8e5a2064600f3def1402397"
+checksum = "39f37e50073ccad23b6d09bcb5b263f4e76d3bb6038e4a3c08e52162ffa8abc2"
 dependencies = [
  "flate2",
- "wasmparser",
+ "memchr",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
+
 [[package]]
 name = "proto_artiq"
 version = "0.0.0"
@@ -433,9 +468,9 @@ checksum = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 
 [[package]]
 name = "regex"
-version = "1.4.6"
+version = "1.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a26af418b574bd56588335b3a3659a65725d4e636eb1016c2f9e3b38c7cc759"
+checksum = "8b1f693b24f6ac912f4893ef08244d70b6067480d2f1a46e950c9691e6749d1d"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -491,14 +526,15 @@ dependencies = [
  "proto_artiq",
  "riscv",
  "smoltcp",
+ "tar-no-std",
  "unwind_backtrace",
 ]
 
 [[package]]
 name = "rustc-demangle"
-version = "0.1.18"
+version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e3bad0ee36814ca07d7968269dd4b7ec89ec2da10c4bb613928d3077083c232"
+checksum = "7ef03e0a2b150c7a90d01faf6254c9c48a41e95fb2a8c2ac1c6f0d2b9aefc342"
 
 [[package]]
 name = "rustc_version"
@@ -517,6 +553,9 @@ dependencies = [
  "board_artiq",
  "board_misoc",
  "build_misoc",
+ "cslice",
+ "eh",
+ "io",
  "log",
  "proto_artiq",
  "riscv",
@@ -590,6 +629,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tar-no-std"
+version = "0.1.8"
+source = "git+https://git.m-labs.hk/M-Labs/tar-no-std?rev=2ab6dc5#2ab6dc58e5249c59c4eb03eaf3a119bcdd678d32"
+dependencies = [
+ "arrayvec",
+ "bitflags",
+ "log",
+]
+
 [[package]]
 name = "unicode-width"
 version = "0.1.8"
@@ -618,14 +667,14 @@ dependencies = [
  "unwind",
 ]
 
+[[package]]
+name = "version_check"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
+
 [[package]]
 name = "wasi"
 version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-
-[[package]]
-name = "wasmparser"
-version = "0.57.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32fddd575d477c6e9702484139cf9f23dcd554b06d185ed0f56c857dd3a47aa6"

artiq/firmware/bootloader/Cargo.toml

@@ -20,18 +20,23 @@ smoltcp = { version = "0.8.2", default-features = false, features = ["medium-eth
 riscv = { version = "0.6.0", features = ["inline-asm"] }
 
 # insanity required by using cargo build-std over xbuild with nix
+# cargo update does not work thanks to ahash 0.7 problems
 [dev-dependencies]
 getopts = "=0.2.21"
-libc = "=0.2.79"
+libc = "=0.2.99"
 unicode-width = "=0.1.8"
-addr2line = "=0.14.0"
-memchr = "=2.3.4"
-hashbrown = "=0.9.0"
+addr2line = "=0.16.0"
+hashbrown = "=0.11.0" # must be injected into lockfile manually
+ahash = "=0.7.0" # must be injected into lockfile manually
 miniz_oxide = "=0.4.0"
-rustc-demangle = "=0.1.18"
-hermit-abi = "=0.1.17"
+rustc-demangle = "=0.1.21"
+hermit-abi = "=0.1.19"
 dlmalloc = "=0.2.1"
-wasi = "=0.9.0"
 fortanix-sgx-abi = "=0.3.3"
-cc = "=1.0.60"
-compiler_builtins = "=0.1.39"
+cc = "=1.0.69"
+compiler_builtins = "=0.1.49"
+version_check = "=0.9.3"
+once_cell = "=1.8.0"
+wasi = "=0.9.0"
+getrandom = "=0.2.0"
+object = "=0.26.2"

artiq/firmware/bootloader/main.rs

@@ -500,7 +500,7 @@ pub extern fn main() -> i32 {
     println!(r"|_|  |_|_|____/ \___/ \____|");
     println!("");
     println!("MiSoC Bootloader");
-    println!("Copyright (c) 2017-2023 M-Labs Limited");
+    println!("Copyright (c) 2017-2024 M-Labs Limited");
     println!("");
 
     #[cfg(has_ethmac)]

artiq/firmware/firmware.ld

@@ -6,7 +6,7 @@ ENTRY(_reset_handler)
  * ld does not allow this expression here.
  */
 MEMORY {
-    runtime (RWX) : ORIGIN = 0x40000000, LENGTH = 0x4000000 /* 64M */
+    firmware (RWX) : ORIGIN = 0x40000000, LENGTH = 0x4000000 /* 64M */
 }
 
 SECTIONS
@@ -14,24 +14,24 @@ SECTIONS
     .vectors :
     {
         *(.vectors)
-    } > runtime
+    } > firmware
 
     .text :
     {
         *(.text .text.*)
-    } > runtime
+    } > firmware
 
     .eh_frame :
     {
         __eh_frame_start = .;
         KEEP(*(.eh_frame))
         __eh_frame_end = .;
-    } > runtime
+    } > firmware
 
     .eh_frame_hdr :
     {
         KEEP(*(.eh_frame_hdr))
-    } > runtime
+    } > firmware
 
     __eh_frame_hdr_start = SIZEOF(.eh_frame_hdr) > 0 ? ADDR(.eh_frame_hdr) : 0;
     __eh_frame_hdr_end = SIZEOF(.eh_frame_hdr) > 0 ? . : 0;
@@ -39,35 +39,35 @@ SECTIONS
     .gcc_except_table :
     {
         *(.gcc_except_table)
-    } > runtime
+    } > firmware
 
     /* https://sourceware.org/bugzilla/show_bug.cgi?id=20475 */
     .got :
     {
         *(.got)
-    } > runtime
+    } > firmware
 
     .got.plt :
     {
         *(.got.plt)
-    } > runtime
+    } > firmware
 
     .rodata :
     {
         *(.rodata .rodata.*)
-    } > runtime
+    } > firmware
 
     .data :
     {
         *(.data .data.*)
-    } > runtime
+    } > firmware
 
     .bss (NOLOAD) : ALIGN(4)
     {
         _fbss = .;
         *(.sbss .sbss.* .bss .bss.*);
         _ebss = .;
-    } > runtime
+    } > firmware
 
     .stack (NOLOAD) : ALIGN(0x1000)
     {
@@ -76,12 +76,12 @@ SECTIONS
         _estack = .;
         . += 0x10000;
         _fstack = . - 16;
-    } > runtime
+    } > firmware
 
     .heap (NOLOAD) : ALIGN(16)
     {
         _fheap = .;
-        . = ORIGIN(runtime) + LENGTH(runtime);
+        . = ORIGIN(firmware) + LENGTH(firmware);
         _eheap = .;
-    } > runtime
+    } > firmware
 }

artiq/firmware/ksupport/api.rs

@@ -157,6 +157,11 @@ static mut API: &'static [(&'static str, *const ())] = &[
     api!(dma_retrieve = ::dma_retrieve),
     api!(dma_playback = ::dma_playback),
 
+    api!(subkernel_load_run = ::subkernel_load_run),
+    api!(subkernel_send_message = ::subkernel_send_message),
+    api!(subkernel_await_message = ::subkernel_await_message),
+    api!(subkernel_await_finish = ::subkernel_await_finish),
+
     api!(i2c_start = ::nrt_bus::i2c::start),
     api!(i2c_restart = ::nrt_bus::i2c::restart),
     api!(i2c_stop = ::nrt_bus::i2c::stop),

artiq/firmware/ksupport/eh_artiq.rs

@@ -55,12 +55,14 @@ struct ExceptionBuffer {
     exception_count: usize,
 }
 
+const EXCEPTION: uw::_Unwind_Exception = uw::_Unwind_Exception {
+    exception_class:   EXCEPTION_CLASS,
+    exception_cleanup: cleanup,
+    private:           [0; uw::unwinder_private_data_size],
+};
+
 static mut EXCEPTION_BUFFER: ExceptionBuffer = ExceptionBuffer {
-    uw_exceptions: [uw::_Unwind_Exception {
-        exception_class:   EXCEPTION_CLASS,
-        exception_cleanup: cleanup,
-        private:           [0; uw::unwinder_private_data_size],
-    }; MAX_INFLIGHT_EXCEPTIONS],
+    uw_exceptions: [EXCEPTION; MAX_INFLIGHT_EXCEPTIONS],
     exceptions: [None; MAX_INFLIGHT_EXCEPTIONS + 1],
     exception_stack: [-1; MAX_INFLIGHT_EXCEPTIONS + 1],
     backtrace: [(0, 0); MAX_BACKTRACE_SIZE],
@@ -74,11 +76,7 @@ static mut EXCEPTION_BUFFER: ExceptionBuffer = ExceptionBuffer {
 };
 
 pub unsafe extern fn reset_exception_buffer(payload_addr: usize) {
-    EXCEPTION_BUFFER.uw_exceptions = [uw::_Unwind_Exception {
-        exception_class:   EXCEPTION_CLASS,
-        exception_cleanup: cleanup,
-        private:           [0; uw::unwinder_private_data_size],
-    }; MAX_INFLIGHT_EXCEPTIONS];
+    EXCEPTION_BUFFER.uw_exceptions = [EXCEPTION; MAX_INFLIGHT_EXCEPTIONS];
     EXCEPTION_BUFFER.exceptions = [None; MAX_INFLIGHT_EXCEPTIONS + 1];
     EXCEPTION_BUFFER.exception_stack = [-1; MAX_INFLIGHT_EXCEPTIONS + 1];
     EXCEPTION_BUFFER.backtrace_size = 0;
@@ -151,8 +149,7 @@ pub extern fn personality(version: c_int,
 }
 
 #[export_name="__artiq_raise"]
-#[unwind(allowed)]
-pub unsafe extern fn raise(exception: *const Exception) -> ! {
+pub unsafe extern "C-unwind" fn raise(exception: *const Exception) -> ! {
     let count = EXCEPTION_BUFFER.exception_count;
     let stack = &mut EXCEPTION_BUFFER.exception_stack;
     let diff = exception as isize - EXCEPTION_BUFFER.exceptions.as_ptr() as isize;
@@ -222,8 +219,7 @@ pub unsafe extern fn raise(exception: *const Exception) -> ! {
 
 
 #[export_name="__artiq_resume"]
-#[unwind(allowed)]
-pub unsafe extern fn resume() -> ! {
+pub unsafe extern "C-unwind" fn resume() -> ! {
     assert!(EXCEPTION_BUFFER.exception_count != 0);
     let i = EXCEPTION_BUFFER.exception_stack[EXCEPTION_BUFFER.exception_count - 1];
     assert!(i != -1);
@@ -233,8 +229,7 @@ pub unsafe extern fn resume() -> ! {
 }
 
 #[export_name="__artiq_end_catch"]
-#[unwind(allowed)]
-pub unsafe extern fn end_catch() {
+pub unsafe extern "C-unwind" fn end_catch() {
     let mut count = EXCEPTION_BUFFER.exception_count;
     assert!(count != 0);
     // we remove all exceptions with SP <= current exception SP
@@ -333,8 +328,7 @@ extern fn stop_fn(_version: c_int,
     }
 }
 
-// Must be kept in sync with preallocate_runtime_exception_names() in artiq/language/embedding_map.py
-static EXCEPTION_ID_LOOKUP: [(&str, u32); 11] = [
+static EXCEPTION_ID_LOOKUP: [(&str, u32); 12] = [
     ("RuntimeError", 0),
     ("RTIOUnderflow", 1),
     ("RTIOOverflow", 2),
@@ -346,6 +340,7 @@ static EXCEPTION_ID_LOOKUP: [(&str, u32); 11] = [
     ("ZeroDivisionError", 8),
     ("IndexError", 9),
     ("UnwrapNoneError", 10),
+    ("SubkernelError", 11)
 ];
 
 pub fn get_exception_id(name: &str) -> u32 {

artiq/firmware/ksupport/lib.rs

@@ -1,5 +1,5 @@
-#![feature(lang_items, llvm_asm, panic_unwind, libc, unwind_attributes,
-           panic_info_message, nll, const_in_array_repeat_expressions)]
+#![feature(lang_items, asm, panic_unwind, libc,
+           panic_info_message, nll, c_unwind)]
 #![no_std]
 
 extern crate libc;
@@ -21,7 +21,6 @@ use dyld::Library;
 use board_artiq::{mailbox, rpc_queue};
 use proto_artiq::{kernel_proto, rpc_proto};
 use kernel_proto::*;
-#[cfg(has_rtio_dma)]
 use board_misoc::csr;
 use riscv::register::{mcause, mepc, mtval};
 
@@ -31,8 +30,9 @@ fn send(request: &Message) {
 }
 
 fn recv<R, F: FnOnce(&Message) -> R>(f: F) -> R {
-    while mailbox::receive() == 0 {}
-    let result = f(unsafe { &*(mailbox::receive() as *const Message) });
+    let mut msg_ptr = 0;
+    while msg_ptr == 0 { msg_ptr = mailbox::receive(); }
+    let result = f(unsafe { &*(msg_ptr as *const Message) });
     mailbox::acknowledge();
     result
 }
@@ -122,7 +122,6 @@ pub extern fn send_to_rtio_log(text: CSlice<u8>) {
     rtio::log(text.as_ref())
 }
 
-#[unwind(aborts)]
 extern fn rpc_send(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
     while !rpc_queue::empty() {}
     send(&RpcSend {
@@ -133,13 +132,12 @@ extern fn rpc_send(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
     })
 }
 
-#[unwind(aborts)]
 extern fn rpc_send_async(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
     while rpc_queue::full() {}
     rpc_queue::enqueue(|mut slice| {
         let length = {
             let mut writer = Cursor::new(&mut slice[4..]);
-            rpc_proto::send_args(&mut writer, service, tag.as_ref(), data)?;
+            rpc_proto::send_args(&mut writer, service, tag.as_ref(), data, true)?;
             writer.position()
         };
         io::ProtoWrite::write_u32(&mut slice, length as u32)
@@ -171,8 +169,7 @@ extern fn rpc_send_async(service: u32, tag: &CSlice<u8>, data: *const *const ())
 /// to the maximum required for any of the possible types according to the target ABI).
 ///
 /// If the RPC call resulted in an exception, it is reconstructed and raised.
-#[unwind(allowed)]
-extern fn rpc_recv(slot: *mut ()) -> usize {
+extern "C-unwind" fn rpc_recv(slot: *mut ()) -> usize {
     send(&RpcRecvRequest(slot));
     recv!(&RpcRecvReply(ref result) => {
         match result {
@@ -204,7 +201,6 @@ fn terminate(exceptions: &'static [Option<eh_artiq::Exception<'static>>],
     loop {}
 }
 
-#[unwind(aborts)]
 extern fn cache_get<'a>(key: &CSlice<u8>) -> *const CSlice<'a, i32> {
     send(&CacheGetRequest {
         key:   str::from_utf8(key.as_ref()).unwrap()
@@ -214,8 +210,7 @@ extern fn cache_get<'a>(key: &CSlice<u8>) -> *const CSlice<'a, i32> {
     })
 }
 
-#[unwind(allowed)]
-extern fn cache_put(key: &CSlice<u8>, list: &CSlice<i32>) {
+extern "C-unwind" fn cache_put(key: &CSlice<u8>, list: &CSlice<i32>) {
     send(&CachePutRequest {
         key:   str::from_utf8(key.as_ref()).unwrap(),
         value: list.as_ref()
@@ -248,8 +243,7 @@ fn dma_record_flush() {
     }
 }
 
-#[unwind(allowed)]
-extern fn dma_record_start(name: &CSlice<u8>) {
+extern "C-unwind" fn dma_record_start(name: &CSlice<u8>) {
     let name = str::from_utf8(name.as_ref()).unwrap();
 
     unsafe {
@@ -268,8 +262,7 @@ extern fn dma_record_start(name: &CSlice<u8>) {
     }
 }
 
-#[unwind(allowed)]
-extern fn dma_record_stop(duration: i64, enable_ddma: bool) {
+extern "C-unwind" fn dma_record_stop(duration: i64, enable_ddma: bool) {
     unsafe {
         dma_record_flush();
 
@@ -291,7 +284,6 @@ extern fn dma_record_stop(duration: i64, enable_ddma: bool) {
     }
 }
 
-#[unwind(aborts)]
 #[inline(always)]
 unsafe fn dma_record_output_prepare(timestamp: i64, target: i32,
                                     words: usize) -> &'static mut [u8] {
@@ -328,7 +320,6 @@ unsafe fn dma_record_output_prepare(timestamp: i64, target: i32,
     data
 }
 
-#[unwind(aborts)]
 extern fn dma_record_output(target: i32, word: i32) {
     unsafe {
         let timestamp = ((csr::rtio::now_hi_read() as i64) << 32) | (csr::rtio::now_lo_read() as i64);
@@ -342,7 +333,6 @@ extern fn dma_record_output(target: i32, word: i32) {
     }
 }
 
-#[unwind(aborts)]
 extern fn dma_record_output_wide(target: i32, words: &CSlice<i32>) {
     assert!(words.len() <= 16); // enforce the hardware limit
 
@@ -361,7 +351,6 @@ extern fn dma_record_output_wide(target: i32, words: &CSlice<i32>) {
     }
 }
 
-#[unwind(aborts)]
 extern fn dma_erase(name: &CSlice<u8>) {
     let name = str::from_utf8(name.as_ref()).unwrap();
 
@@ -375,8 +364,7 @@ struct DmaTrace {
     uses_ddma: bool,
 }
 
-#[unwind(allowed)]
-extern fn dma_retrieve(name: &CSlice<u8>) -> DmaTrace {
+extern "C-unwind" fn dma_retrieve(name: &CSlice<u8>) -> DmaTrace {
     let name = str::from_utf8(name.as_ref()).unwrap();
 
     send(&DmaRetrieveRequest { name: name });
@@ -396,9 +384,8 @@ extern fn dma_retrieve(name: &CSlice<u8>) -> DmaTrace {
     })
 }
 
-#[cfg(has_rtio_dma)]
-#[unwind(allowed)]
-extern fn dma_playback(timestamp: i64, ptr: i32, _uses_ddma: bool) {
+#[cfg(kernel_has_rtio_dma)]
+extern "C-unwind" fn dma_playback(timestamp: i64, ptr: i32, _uses_ddma: bool) {
     assert!(ptr % 64 == 0);
 
     unsafe {
@@ -454,10 +441,97 @@ extern fn dma_playback(timestamp: i64, ptr: i32, _uses_ddma: bool) {
     }
 }
 
-#[cfg(not(has_rtio_dma))]
-#[unwind(allowed)]
-extern fn dma_playback(_timestamp: i64, _ptr: i32, _uses_ddma: bool) {
-    unimplemented!("not(has_rtio_dma)")
+#[cfg(all(not(kernel_has_rtio_dma), not(has_rtio_dma)))]
+extern "C-unwind" fn dma_playback(_timestamp: i64, _ptr: i32, _uses_ddma: bool) {
+    unimplemented!("not(kernel_has_rtio_dma)")
+}
+
+// for satellite (has_rtio_dma but not in kernel)
+#[cfg(all(not(kernel_has_rtio_dma), has_rtio_dma))]
+extern "C-unwind" fn dma_playback(timestamp: i64, ptr: i32, _uses_ddma: bool) {
+    // DDMA is always used on satellites, so the `uses_ddma` setting is ignored
+    // StartRemoteRequest reused as "normal" start request
+    send(&DmaStartRemoteRequest { id: ptr as i32, timestamp: timestamp });
+    // skip awaitremoterequest - it's a given
+    recv!(&DmaAwaitRemoteReply { timeout, error, channel, timestamp } => {
+        if timeout {
+            raise!("DMAError",
+                "Error running DMA on satellite device, timed out waiting for results");
+        }
+        if error & 1 != 0 {
+            raise!("RTIOUnderflow",
+                "RTIO underflow at channel {rtio_channel_info:0}, {1} mu",
+                channel as i64, timestamp as i64, 0);
+        }
+        if error & 2 != 0 {
+            raise!("RTIODestinationUnreachable",
+                "RTIO destination unreachable, output, at channel {rtio_channel_info:0}, {1} mu",
+                channel as i64, timestamp as i64, 0);
+        }
+    });
+}
+
+
+extern "C-unwind" fn subkernel_load_run(id: u32, destination: u8, run: bool) {
+    send(&SubkernelLoadRunRequest { id: id, destination: destination, run: run });
+    recv!(&SubkernelLoadRunReply { succeeded } => {
+        if !succeeded {
+            raise!("SubkernelError",
+                "Error loading or running the subkernel");
+        }
+    });
+}
+
+extern "C-unwind" fn subkernel_await_finish(id: u32, timeout: i64) {
+    send(&SubkernelAwaitFinishRequest { id: id, timeout: timeout });
+    recv!(SubkernelAwaitFinishReply { status } => {
+        match status {
+            SubkernelStatus::NoError => (),
+            SubkernelStatus::IncorrectState => raise!("SubkernelError",
+                "Subkernel not running"),
+            SubkernelStatus::Timeout => raise!("SubkernelError",
+                "Subkernel timed out"),
+            SubkernelStatus::CommLost => raise!("SubkernelError",
+                "Lost communication with satellite"),
+            SubkernelStatus::OtherError => raise!("SubkernelError",
+                "An error occurred during subkernel operation")
+        }
+    })
+}
+
+extern fn subkernel_send_message(id: u32, is_return: bool, destination: u8, 
+    count: u8, tag: &CSlice<u8>, data: *const *const ()) {
+    send(&SubkernelMsgSend { 
+        id: id,
+        destination: if is_return { None } else { Some(destination) },
+        count: count,
+        tag: tag.as_ref(),
+        data: data 
+    });
+}
+
+extern "C-unwind" fn subkernel_await_message(id: i32, timeout: i64, tags: &CSlice<u8>, min: u8, max: u8) -> u8 {
+    send(&SubkernelMsgRecvRequest { id: id, timeout: timeout, tags: tags.as_ref() });
+    recv!(SubkernelMsgRecvReply { status, count } => {
+        match status {
+            SubkernelStatus::NoError => {
+                if count < &min || count > &max {
+                    raise!("SubkernelError",
+                        "Received less or more arguments than expected");
+                }
+                *count
+            }
+            SubkernelStatus::IncorrectState => raise!("SubkernelError",
+                "Subkernel not running"),
+            SubkernelStatus::Timeout => raise!("SubkernelError",
+                "Subkernel timed out"),
+            SubkernelStatus::CommLost => raise!("SubkernelError",
+                "Lost communication with satellite"),
+            SubkernelStatus::OtherError => raise!("SubkernelError",
+                "An error occurred during subkernel operation")
+        }
+    })
+    // RpcRecvRequest should be called `count` times after this to receive message data
 }
 
 unsafe fn attribute_writeback(typeinfo: *const ()) {
@@ -561,8 +635,7 @@ pub unsafe fn main() {
 }
 
 #[no_mangle]
-#[unwind(allowed)]
-pub unsafe extern fn exception(_regs: *const u32) {
+pub unsafe extern "C-unwind" fn exception(_regs: *const u32) {
     let pc = mepc::read();
     let cause = mcause::read().cause();
     let mtval = mtval::read();
@@ -580,7 +653,6 @@ pub unsafe extern fn exception(_regs: *const u32) {
 }
 
 #[no_mangle]
-#[unwind(allowed)]
-pub extern fn abort() {
+pub extern "C-unwind" fn abort() {
     panic!("aborted")
 }

artiq/firmware/libboard_artiq/Cargo.toml

@@ -25,3 +25,4 @@ proto_artiq = { path = "../libproto_artiq" }
 [features]
 uart_console = []
 alloc = []
+calibrate_wrpll_skew = []

artiq/firmware/libboard_artiq/drtioaux.rs

@@ -69,9 +69,9 @@ fn receive<F, T>(linkno: u8, f: F) -> Result<Option<T>, Error<!>>
     let linkidx = linkno as usize;
     unsafe {
         if (DRTIOAUX[linkidx].aux_rx_present_read)() == 1 {
-            let ptr = DRTIOAUX_MEM[linkidx].base + DRTIOAUX_MEM[linkidx].size / 2;
-            let len = (DRTIOAUX[linkidx].aux_rx_length_read)();
-            let result = f(slice::from_raw_parts(ptr as *mut u8, len as usize));
+            let read_ptr = (DRTIOAUX[linkidx].aux_read_pointer_read)() as usize;
+            let ptr = DRTIOAUX_MEM[linkidx].base + (DRTIOAUX_MEM[linkidx].size / 2) + (read_ptr * 0x400);
+            let result = f(slice::from_raw_parts(ptr as *mut u8, 0x400 as usize));
             (DRTIOAUX[linkidx].aux_rx_present_write)(1);
             Ok(Some(result?))
         } else {
@@ -86,21 +86,17 @@ pub fn recv(linkno: u8) -> Result<Option<Packet>, Error<!>> {
     }
 
     receive(linkno, |buffer| {
-        if buffer.len() < 8 {
-            return Err(IoError::UnexpectedEnd.into())
-        }
-
         let mut reader = Cursor::new(buffer);
 
-        let checksum_at = buffer.len() - 4;
+        let packet = Packet::read_from(&mut reader)?;
+        let padding = (12 - (reader.position() % 8)) % 8;
+        let checksum_at = reader.position() + padding;
         let checksum = crc::crc32::checksum_ieee(&reader.get_ref()[0..checksum_at]);
         reader.set_position(checksum_at);
         if reader.read_u32()? != checksum {
             return Err(Error::CorruptedPacket)
         }
-        reader.set_position(0);
-
-        Ok(Packet::read_from(&mut reader)?)
+        Ok(packet)
     })
 }
 

artiq/firmware/libboard_artiq/lib.rs

@@ -1,4 +1,4 @@
-#![feature(lang_items, never_type)]
+#![feature(asm, lang_items, never_type)]
 #![no_std]
 
 extern crate failure;
@@ -24,6 +24,8 @@ pub mod rpc_queue;
 
 #[cfg(has_si5324)]
 pub mod si5324;
+#[cfg(has_si549)]
+pub mod si549;
 
 #[cfg(has_grabber)]
 pub mod grabber;

artiq/firmware/libboard_artiq/mailbox.rs

@@ -6,7 +6,11 @@ static mut LAST: usize = 0;
 
 pub unsafe fn send(data: usize) {
     LAST = data;
-    write_volatile(MAILBOX, data)
+    // after Rust toolchain update to LLVM12, this empty asm! block is required
+    // to ensure that the compiler doesn't take any shortcuts
+    // otherwise, the comm CPU will read garbage data and crash
+    asm!("", options(preserves_flags, readonly, nostack));
+    write_volatile(MAILBOX, data);
 }
 
 pub fn acknowledged() -> bool {

artiq/firmware/libboard_artiq/si549.rs

@@ -0,0 +1,862 @@
+use board_misoc::{clock, csr};
+use log::info;
+
+const ADDRESS: u8 = 0x67;
+
+const ADPLL_MAX: i32 = (950.0 / 0.0001164) as i32;
+
+pub struct DividerConfig {
+    pub hsdiv: u16,
+    pub lsdiv: u8,
+    pub fbdiv: u64,
+}
+
+pub struct FrequencySetting {
+    pub main: DividerConfig,
+    pub helper: DividerConfig,
+}
+
+mod i2c {
+    use super::*;
+
+    #[derive(Clone, Copy)]
+    pub enum DCXO {
+        Main,
+        Helper,
+    }
+
+    fn half_period() {
+        clock::spin_us(1)
+    }
+
+    fn sda_i(dcxo: DCXO) -> bool {
+        match dcxo {
+            DCXO::Main => unsafe { csr::wrpll::main_dcxo_sda_in_read() == 1 },
+            DCXO::Helper => unsafe { csr::wrpll::helper_dcxo_sda_in_read() == 1 },
+        }
+    }
+
+    fn sda_oe(dcxo: DCXO, oe: bool) {
+        let val = if oe { 1 } else { 0 };
+        match dcxo {
+            DCXO::Main => unsafe { csr::wrpll::main_dcxo_sda_oe_write(val) },
+            DCXO::Helper => unsafe { csr::wrpll::helper_dcxo_sda_oe_write(val) },
+        };
+    }
+
+    fn sda_o(dcxo: DCXO, o: bool) {
+        let val = if o { 1 } else { 0 };
+        match dcxo {
+            DCXO::Main => unsafe { csr::wrpll::main_dcxo_sda_out_write(val) },
+            DCXO::Helper => unsafe { csr::wrpll::helper_dcxo_sda_out_write(val) },
+        };
+    }
+
+    fn scl_oe(dcxo: DCXO, oe: bool) {
+        let val = if oe { 1 } else { 0 };
+        match dcxo {
+            DCXO::Main => unsafe { csr::wrpll::main_dcxo_scl_oe_write(val) },
+            DCXO::Helper => unsafe { csr::wrpll::helper_dcxo_scl_oe_write(val) },
+        };
+    }
+
+    fn scl_o(dcxo: DCXO, o: bool) {
+        let val = if o { 1 } else { 0 };
+        match dcxo {
+            DCXO::Main => unsafe { csr::wrpll::main_dcxo_scl_out_write(val) },
+            DCXO::Helper => unsafe { csr::wrpll::helper_dcxo_scl_out_write(val) },
+        };
+    }
+
+    pub fn init(dcxo: DCXO) -> Result<(), &'static str> {
+        // Set SCL as output, and high level
+        scl_o(dcxo, true);
+        scl_oe(dcxo, true);
+        // Prepare a zero level on SDA so that sda_oe pulls it down
+        sda_o(dcxo, false);
+        // Release SDA
+        sda_oe(dcxo, false);
+
+        // Check the I2C bus is ready
+        half_period();
+        half_period();
+        if !sda_i(dcxo) {
+            // Try toggling SCL a few times
+            for _bit in 0..8 {
+                scl_o(dcxo, false);
+                half_period();
+                scl_o(dcxo, true);
+                half_period();
+            }
+        }
+
+        if !sda_i(dcxo) {
+            return Err("SDA is stuck low and doesn't get unstuck");
+        }
+        Ok(())
+    }
+
+    pub fn start(dcxo: DCXO) {
+        // Set SCL high then SDA low
+        scl_o(dcxo, true);
+        half_period();
+        sda_oe(dcxo, true);
+        half_period();
+    }
+
+    pub fn stop(dcxo: DCXO) {
+        // First, make sure SCL is low, so that the target releases the SDA line
+        scl_o(dcxo, false);
+        half_period();
+        // Set SCL high then SDA high
+        sda_oe(dcxo, true);
+        scl_o(dcxo, true);
+        half_period();
+        sda_oe(dcxo, false);
+        half_period();
+    }
+
+    pub fn write(dcxo: DCXO, data: u8) -> bool {
+        // MSB first
+        for bit in (0..8).rev() {
+            // Set SCL low and set our bit on SDA
+            scl_o(dcxo, false);
+            sda_oe(dcxo, data & (1 << bit) == 0);
+            half_period();
+            // Set SCL high ; data is shifted on the rising edge of SCL
+            scl_o(dcxo, true);
+            half_period();
+        }
+        // Check ack
+        // Set SCL low, then release SDA so that the I2C target can respond
+        scl_o(dcxo, false);
+        half_period();
+        sda_oe(dcxo, false);
+        // Set SCL high and check for ack
+        scl_o(dcxo, true);
+        half_period();
+        // returns true if acked (I2C target pulled SDA low)
+        !sda_i(dcxo)
+    }
+
+    pub fn read(dcxo: DCXO, ack: bool) -> u8 {
+        // Set SCL low first, otherwise setting SDA as input may cause a transition
+        // on SDA with SCL high which will be interpreted as START/STOP condition.
+        scl_o(dcxo, false);
+        half_period(); // make sure SCL has settled low
+        sda_oe(dcxo, false);
+
+        let mut data: u8 = 0;
+
+        // MSB first
+        for bit in (0..8).rev() {
+            scl_o(dcxo, false);
+            half_period();
+            // Set SCL high and shift data
+            scl_o(dcxo, true);
+            half_period();
+            if sda_i(dcxo) {
+                data |= 1 << bit
+            }
+        }
+        // Send ack
+        // Set SCL low and pull SDA low when acking
+        scl_o(dcxo, false);
+        if ack {
+            sda_oe(dcxo, true)
+        }
+        half_period();
+        // then set SCL high
+        scl_o(dcxo, true);
+        half_period();
+
+        data
+    }
+}
+
+fn write(dcxo: i2c::DCXO, reg: u8, val: u8) -> Result<(), &'static str> {
+    i2c::start(dcxo);
+    if !i2c::write(dcxo, ADDRESS << 1) {
+        return Err("Si549 failed to ack write address");
+    }
+    if !i2c::write(dcxo, reg) {
+        return Err("Si549 failed to ack register");
+    }
+    if !i2c::write(dcxo, val) {
+        return Err("Si549 failed to ack value");
+    }
+    i2c::stop(dcxo);
+    Ok(())
+}
+
+fn read(dcxo: i2c::DCXO, reg: u8) -> Result<u8, &'static str> {
+    i2c::start(dcxo);
+    if !i2c::write(dcxo, ADDRESS << 1) {
+        return Err("Si549 failed to ack write address");
+    }
+    if !i2c::write(dcxo, reg) {
+        return Err("Si549 failed to ack register");
+    }
+    i2c::stop(dcxo);
+
+    i2c::start(dcxo);
+    if !i2c::write(dcxo, (ADDRESS << 1) | 1) {
+        return Err("Si549 failed to ack read address");
+    }
+    let val = i2c::read(dcxo, false);
+    i2c::stop(dcxo);
+    Ok(val)
+}
+
+fn setup(dcxo: i2c::DCXO, config: &DividerConfig) -> Result<(), &'static str> {
+    i2c::init(dcxo)?;
+
+    write(dcxo, 255, 0x00)?; // PAGE
+    write(dcxo, 69, 0x00)?; // Disable FCAL override.
+    write(dcxo, 17, 0x00)?; // Synchronously disable output
+
+    // The Si549 has no ID register, so we check that it responds correctly
+    // by writing values to a RAM-like register and reading them back.
+    for test_value in 0..255 {
+        write(dcxo, 23, test_value)?;
+        let readback = read(dcxo, 23)?;
+        if readback != test_value {
+            return Err("Si549 detection failed");
+        }
+    }
+
+    write(dcxo, 23, config.hsdiv as u8)?;
+    write(dcxo, 24, (config.hsdiv >> 8) as u8 | (config.lsdiv << 4))?;
+    write(dcxo, 26, config.fbdiv as u8)?;
+    write(dcxo, 27, (config.fbdiv >> 8) as u8)?;
+    write(dcxo, 28, (config.fbdiv >> 16) as u8)?;
+    write(dcxo, 29, (config.fbdiv >> 24) as u8)?;
+    write(dcxo, 30, (config.fbdiv >> 32) as u8)?;
+    write(dcxo, 31, (config.fbdiv >> 40) as u8)?;
+
+    write(dcxo, 7, 0x08)?; // Start FCAL
+    clock::spin_us(30_000); // Internal FCAL VCO calibration
+    write(dcxo, 17, 0x01)?; // Synchronously enable output
+
+    Ok(())
+}
+
+pub fn main_setup(settings: &FrequencySetting) -> Result<(), &'static str> {
+    unsafe {
+        csr::wrpll::main_dcxo_bitbang_enable_write(1);
+        csr::wrpll::main_dcxo_i2c_address_write(ADDRESS);
+    }
+
+    setup(i2c::DCXO::Main, &settings.main)?;
+
+    // Si549 maximum settling time for large frequency change.
+    clock::spin_us(40_000);
+
+    unsafe {
+        csr::wrpll::main_dcxo_bitbang_enable_write(0);
+    }
+
+    info!("Main Si549 started");
+    Ok(())
+}
+
+pub fn helper_setup(settings: &FrequencySetting) -> Result<(), &'static str> {
+    unsafe {
+        csr::wrpll::helper_reset_write(1);
+        csr::wrpll::helper_dcxo_bitbang_enable_write(1);
+        csr::wrpll::helper_dcxo_i2c_address_write(ADDRESS);
+    }
+
+    setup(i2c::DCXO::Helper, &settings.helper)?;
+
+    // Si549 maximum settling time for large frequency change.
+    clock::spin_us(40_000);
+
+    unsafe {
+        csr::wrpll::helper_reset_write(0);
+        csr::wrpll::helper_dcxo_bitbang_enable_write(0);
+    }
+    info!("Helper Si549 started");
+    Ok(())
+}
+
+fn set_adpll(dcxo: i2c::DCXO, adpll: i32) -> Result<(), &'static str> {
+    if adpll.abs() > ADPLL_MAX {
+        return Err("adpll is too large");
+    }
+
+    match dcxo {
+        i2c::DCXO::Main => unsafe {
+            if csr::wrpll::main_dcxo_bitbang_enable_read() == 1 {
+                return Err("Main si549 bitbang mode is active when using gateware i2c");
+            }
+
+            while csr::wrpll::main_dcxo_adpll_busy_read() == 1 {}
+            if csr::wrpll::main_dcxo_nack_read() == 1 {
+                return Err("Main si549 failed to ack adpll write");
+            }
+
+            csr::wrpll::main_dcxo_i2c_address_write(ADDRESS);
+            csr::wrpll::main_dcxo_adpll_write(adpll as u32);
+
+            csr::wrpll::main_dcxo_adpll_stb_write(1);
+        },
+        i2c::DCXO::Helper => unsafe {
+            if csr::wrpll::helper_dcxo_bitbang_enable_read() == 1 {
+                return Err("Helper si549 bitbang mode is active when using gateware i2c");
+            }
+
+            while csr::wrpll::helper_dcxo_adpll_busy_read() == 1 {}
+            if csr::wrpll::helper_dcxo_nack_read() == 1 {
+                return Err("Helper si549 failed to ack adpll write");
+            }
+
+            csr::wrpll::helper_dcxo_i2c_address_write(ADDRESS);
+            csr::wrpll::helper_dcxo_adpll_write(adpll as u32);
+
+            csr::wrpll::helper_dcxo_adpll_stb_write(1);
+        },
+    };
+
+    Ok(())
+}
+
+#[cfg(has_wrpll)]
+pub mod wrpll {
+
+    use super::*;
+
+    const BEATING_PERIOD: i32 = 0x8000;
+    const BEATING_HALFPERIOD: i32 = 0x4000;
+    const COUNTER_WIDTH: u32 = 24;
+    const DIV_WIDTH: u32 = 2;
+
+    // y[n] = b0*x[n] + b1*x[n-1] + b2*x[n-2] - a1*y[n-1] - a2*y[n-2]
+    struct FilterParameters {
+        pub b0: i64,
+        pub b1: i64,
+        pub b2: i64,
+        pub a1: i64,
+        pub a2: i64,
+    }
+
+    #[cfg(rtio_frequency = "100.0")]
+    const LPF: FilterParameters = FilterParameters {
+        b0: 10905723400,   // 0.03967479060647884 * 1 << 38
+        b1: 21811446800,   // 0.07934958121295768 * 1 << 38
+        b2: 10905723400,   // 0.03967479060647884 * 1 << 38
+        a1: -381134538612, // -1.3865593741228928 * 1 << 38
+        a2: 149879525269,  // 0.5452585365488082  * 1 << 38
+    };
+
+    #[cfg(rtio_frequency = "125.0")]
+    const LPF: FilterParameters = FilterParameters {
+        b0: 19816511911,   // 0.07209205036273991  * 1 << 38
+        b1: 39633023822,   // 0.14418410072547982  * 1 << 38
+        b2: 19816511911,   // 0.07209205036273991  * 1 << 38
+        a1: -168062510414, // -0.6114078511562919  * 1 << 38
+        a2: -27549348884,  // -0.10022394739274834 * 1 << 38
+    };
+
+    static mut H_ADPLL1: i32 = 0;
+    static mut H_ADPLL2: i32 = 0;
+    static mut PERIOD_ERR1: i32 = 0;
+    static mut PERIOD_ERR2: i32 = 0;
+
+    static mut M_ADPLL1: i32 = 0;
+    static mut M_ADPLL2: i32 = 0;
+    static mut PHASE_ERR1: i32 = 0;
+    static mut PHASE_ERR2: i32 = 0;
+
+    static mut BASE_ADPLL: i32 = 0;
+
+    #[derive(Clone, Copy)]
+    pub enum ISR {
+        RefTag,
+        MainTag,
+    }
+
+    mod tag_collector {
+        use super::*;
+
+        #[cfg(wrpll_ref_clk = "GT_CDR")]
+        static mut TAG_OFFSET: u32 = 23890;
+        #[cfg(wrpll_ref_clk = "SMA_CLKIN")]
+        static mut TAG_OFFSET: u32 = 0;
+        static mut REF_TAG: u32 = 0;
+        static mut REF_TAG_READY: bool = false;
+        static mut MAIN_TAG: u32 = 0;
+        static mut MAIN_TAG_READY: bool = false;
+
+        pub fn reset() {
+            clear_phase_diff_ready();
+            unsafe {
+                REF_TAG = 0;
+                MAIN_TAG = 0;
+            }
+        }
+
+        pub fn clear_phase_diff_ready() {
+            unsafe {
+                REF_TAG_READY = false;
+                MAIN_TAG_READY = false;
+            }
+        }
+
+        pub fn collect_tags(interrupt: ISR) {
+            match interrupt {
+                ISR::RefTag => unsafe {
+                    REF_TAG = csr::wrpll::ref_tag_read();
+                    REF_TAG_READY = true;
+                },
+                ISR::MainTag => unsafe {
+                    MAIN_TAG = csr::wrpll::main_tag_read();
+                    MAIN_TAG_READY = true;
+                },
+            }
+        }
+
+        pub fn phase_diff_ready() -> bool {
+            unsafe { REF_TAG_READY && MAIN_TAG_READY }
+        }
+
+        #[cfg(feature = "calibrate_wrpll_skew")]
+        pub fn set_tag_offset(offset: u32) {
+            unsafe {
+                TAG_OFFSET = offset;
+            }
+        }
+
+        #[cfg(feature = "calibrate_wrpll_skew")]
+        pub fn get_tag_offset() -> u32 {
+            unsafe { TAG_OFFSET }
+        }
+
+        pub fn get_period_error() -> i32 {
+            // n * BEATING_PERIOD - REF_TAG(n) mod BEATING_PERIOD
+            let mut period_error = unsafe {
+                REF_TAG
+                    .overflowing_neg()
+                    .0
+                    .rem_euclid(BEATING_PERIOD as u32) as i32
+            };
+            // mapping tags from [0, 2π] -> [-π, π]
+            if period_error > BEATING_HALFPERIOD {
+                period_error -= BEATING_PERIOD
+            }
+            period_error
+        }
+
+        pub fn get_phase_error() -> i32 {
+            // MAIN_TAG(n) - REF_TAG(n) - TAG_OFFSET mod BEATING_PERIOD
+            let mut phase_error = unsafe {
+                MAIN_TAG
+                    .overflowing_sub(REF_TAG + TAG_OFFSET)
+                    .0
+                    .rem_euclid(BEATING_PERIOD as u32) as i32
+            };
+
+            // mapping tags from [0, 2π] -> [-π, π]
+            if phase_error > BEATING_HALFPERIOD {
+                phase_error -= BEATING_PERIOD
+            }
+            phase_error
+        }
+    }
+
+    fn set_isr(en: bool) {
+        let val = if en { 1 } else { 0 };
+        unsafe {
+            csr::wrpll::ref_tag_ev_enable_write(val);
+            csr::wrpll::main_tag_ev_enable_write(val);
+        }
+    }
+
+    fn set_base_adpll() -> Result<(), &'static str> {
+        let count2adpll = |error: i32| {
+            ((error as f64 * 1e6) / (0.0001164 * (1 << (COUNTER_WIDTH - DIV_WIDTH)) as f64)) as i32
+        };
+
+        let (ref_count, main_count) = get_freq_counts();
+        unsafe {
+            BASE_ADPLL = count2adpll(ref_count as i32 - main_count as i32);
+            set_adpll(i2c::DCXO::Main, BASE_ADPLL)?;
+            set_adpll(i2c::DCXO::Helper, BASE_ADPLL)?;
+        }
+        Ok(())
+    }
+
+    fn get_freq_counts() -> (u32, u32) {
+        unsafe {
+            csr::wrpll::frequency_counter_update_write(1);
+            while csr::wrpll::frequency_counter_busy_read() == 1 {}
+            #[cfg(wrpll_ref_clk = "GT_CDR")]
+            let ref_count = csr::wrpll::frequency_counter_counter_rtio_rx0_read();
+            #[cfg(wrpll_ref_clk = "SMA_CLKIN")]
+            let ref_count = csr::wrpll::frequency_counter_counter_ref_read();
+            let main_count = csr::wrpll::frequency_counter_counter_sys_read();
+
+            (ref_count, main_count)
+        }
+    }
+
+    fn reset_plls() -> Result<(), &'static str> {
+        unsafe {
+            H_ADPLL1 = 0;
+            H_ADPLL2 = 0;
+            PERIOD_ERR1 = 0;
+            PERIOD_ERR2 = 0;
+            M_ADPLL1 = 0;
+            M_ADPLL2 = 0;
+            PHASE_ERR1 = 0;
+            PHASE_ERR2 = 0;
+        }
+        set_adpll(i2c::DCXO::Main, 0)?;
+        set_adpll(i2c::DCXO::Helper, 0)?;
+        // wait for adpll to transfer and DCXO to settle
+        clock::spin_us(200);
+        Ok(())
+    }
+
+    fn clear_pending(interrupt: ISR) {
+        match interrupt {
+            ISR::RefTag => unsafe { csr::wrpll::ref_tag_ev_pending_write(1) },
+            ISR::MainTag => unsafe { csr::wrpll::main_tag_ev_pending_write(1) },
+        };
+    }
+
+    fn is_pending(interrupt: ISR) -> bool {
+        match interrupt {
+            ISR::RefTag => unsafe { csr::wrpll::ref_tag_ev_pending_read() == 1 },
+            ISR::MainTag => unsafe { csr::wrpll::main_tag_ev_pending_read() == 1 },
+        }
+    }
+
+    pub fn interrupt_handler() {
+        if is_pending(ISR::RefTag) {
+            tag_collector::collect_tags(ISR::RefTag);
+            clear_pending(ISR::RefTag);
+            helper_pll().expect("failed to run helper DCXO PLL");
+        }
+
+        if is_pending(ISR::MainTag) {
+            tag_collector::collect_tags(ISR::MainTag);
+            clear_pending(ISR::MainTag);
+        }
+
+        if tag_collector::phase_diff_ready() {
+            main_pll().expect("failed to run main DCXO PLL");
+            tag_collector::clear_phase_diff_ready();
+        }
+    }
+
+    fn helper_pll() -> Result<(), &'static str> {
+        let period_err = tag_collector::get_period_error();
+        unsafe {
+            let adpll = (((LPF.b0 * period_err as i64)
+                + (LPF.b1 * PERIOD_ERR1 as i64)
+                + (LPF.b2 * PERIOD_ERR2 as i64)
+                - (LPF.a1 * H_ADPLL1 as i64)
+                - (LPF.a2 * H_ADPLL2 as i64))
+                >> 38) as i32;
+            set_adpll(i2c::DCXO::Helper, BASE_ADPLL + adpll)?;
+            H_ADPLL2 = H_ADPLL1;
+            PERIOD_ERR2 = PERIOD_ERR1;
+            H_ADPLL1 = adpll;
+            PERIOD_ERR1 = period_err;
+        };
+        Ok(())
+    }
+
+    fn main_pll() -> Result<(), &'static str> {
+        let phase_err = tag_collector::get_phase_error();
+        unsafe {
+            let adpll = (((LPF.b0 * phase_err as i64)
+                + (LPF.b1 * PHASE_ERR1 as i64)
+                + (LPF.b2 * PHASE_ERR2 as i64)
+                - (LPF.a1 * M_ADPLL1 as i64)
+                - (LPF.a2 * M_ADPLL2 as i64))
+                >> 38) as i32;
+            set_adpll(i2c::DCXO::Main, BASE_ADPLL + adpll)?;
+            M_ADPLL2 = M_ADPLL1;
+            PHASE_ERR2 = PHASE_ERR1;
+            M_ADPLL1 = adpll;
+            PHASE_ERR1 = phase_err;
+        };
+        Ok(())
+    }
+
+    #[cfg(wrpll_ref_clk = "GT_CDR")]
+    fn test_skew() -> Result<(), &'static str> {
+        // wait for PLL to stabilize
+        clock::spin_us(20_000);
+
+        info!("testing the skew of SYS CLK...");
+        if has_timing_error() {
+            return Err("the skew cannot satisfy setup/hold time constraint of RX synchronizer");
+        }
+        info!("the skew of SYS CLK met the timing constraint");
+        Ok(())
+    }
+
+    #[cfg(wrpll_ref_clk = "GT_CDR")]
+    fn has_timing_error() -> bool {
+        unsafe {
+            csr::wrpll_skewtester::error_write(1);
+        }
+        clock::spin_us(5_000);
+        unsafe { csr::wrpll_skewtester::error_read() == 1 }
+    }
+
+    #[cfg(feature = "calibrate_wrpll_skew")]
+    fn find_edge(target: bool) -> Result<u32, &'static str> {
+        const STEP: u32 = 8;
+        const STABLE_THRESHOLD: u32 = 10;
+
+        enum FSM {
+            Init,
+            WaitEdge,
+            GotEdge,
+        }
+
+        let mut state: FSM = FSM::Init;
+        let mut offset: u32 = tag_collector::get_tag_offset();
+        let mut median_edge: u32 = 0;
+        let mut stable_counter: u32 = 0;
+
+        for _ in 0..(BEATING_PERIOD as u32 / STEP) as usize {
+            tag_collector::set_tag_offset(offset);
+            offset += STEP;
+            // wait for PLL to stabilize
+            clock::spin_us(20_000);
+
+            let error = has_timing_error();
+            // A median edge deglitcher
+            match state {
+                FSM::Init => {
+                    if error != target {
+                        stable_counter += 1;
+                    } else {
+                        stable_counter = 0;
+                    }
+
+                    if stable_counter >= STABLE_THRESHOLD {
+                        state = FSM::WaitEdge;
+                        stable_counter = 0;
+                    }
+                }
+                FSM::WaitEdge => {
+                    if error == target {
+                        state = FSM::GotEdge;
+                        median_edge = offset;
+                    }
+                }
+                FSM::GotEdge => {
+                    if error != target {
+                        median_edge += STEP;
+                        stable_counter = 0;
+                    } else {
+                        stable_counter += 1;
+                    }
+
+                    if stable_counter >= STABLE_THRESHOLD {
+                        return Ok(median_edge);
+                    }
+                }
+            }
+        }
+        return Err("failed to find timing error edge");
+    }
+
+    #[cfg(feature = "calibrate_wrpll_skew")]
+    fn calibrate_skew() -> Result<(), &'static str> {
+        info!("calibrating skew to meet timing constraint...");
+
+        // clear calibrated value
+        tag_collector::set_tag_offset(0);
+        let rising = find_edge(true)? as i32;
+        let falling = find_edge(false)? as i32;
+
+        let width = BEATING_PERIOD - (falling - rising);
+        let result = falling + width / 2;
+        tag_collector::set_tag_offset(result as u32);
+
+        info!(
+            "calibration successful, error zone: {} -> {}, width: {} ({}deg), middle of working region: {}",
+            rising,
+            falling,
+            width,
+            360 * width / BEATING_PERIOD,
+            result,
+        );
+
+        Ok(())
+    }
+
+    pub fn select_recovered_clock(rc: bool) {
+        set_isr(false);
+
+        if rc {
+            tag_collector::reset();
+            reset_plls().expect("failed to reset main and helper PLL");
+
+            // get within capture range
+            set_base_adpll().expect("failed to set base adpll");
+
+            // clear gateware pending flag
+            clear_pending(ISR::RefTag);
+            clear_pending(ISR::MainTag);
+
+            // use nFIQ to avoid IRQ being disabled by mutex lock and mess up PLL
+            set_isr(true);
+            info!("WRPLL interrupt enabled");
+
+            #[cfg(feature = "calibrate_wrpll_skew")]
+            calibrate_skew().expect("failed to set the correct skew");
+
+            #[cfg(wrpll_ref_clk = "GT_CDR")]
+            test_skew().expect("skew test failed");
+        }
+    }
+}
+
+#[cfg(has_wrpll_refclk)]
+pub mod wrpll_refclk {
+    use super::*;
+
+    pub struct MmcmSetting {
+        pub clkout0_reg1: u16,  //0x08
+        pub clkout0_reg2: u16,  //0x09
+        pub clkfbout_reg1: u16, //0x14
+        pub clkfbout_reg2: u16, //0x15
+        pub div_reg: u16,       //0x16
+        pub lock_reg1: u16,     //0x18
+        pub lock_reg2: u16,     //0x19
+        pub lock_reg3: u16,     //0x1A
+        pub power_reg: u16,     //0x28
+        pub filt_reg1: u16,     //0x4E
+        pub filt_reg2: u16,     //0x4F
+    }
+
+    fn one_clock_cycle() {
+        unsafe {
+            csr::wrpll_refclk::mmcm_dclk_write(1);
+            csr::wrpll_refclk::mmcm_dclk_write(0);
+        }
+    }
+
+    fn set_addr(address: u8) {
+        unsafe {
+            csr::wrpll_refclk::mmcm_daddr_write(address);
+        }
+    }
+
+    fn set_data(value: u16) {
+        unsafe {
+            csr::wrpll_refclk::mmcm_din_write(value);
+        }
+    }
+
+    fn set_enable(en: bool) {
+        let val = if en { 1 } else { 0 };
+        unsafe {
+            csr::wrpll_refclk::mmcm_den_write(val);
+        }
+    }
+
+    fn set_write_enable(en: bool) {
+        let val = if en { 1 } else { 0 };
+        unsafe {
+            csr::wrpll_refclk::mmcm_dwen_write(val);
+        }
+    }
+
+    fn get_data() -> u16 {
+        unsafe { csr::wrpll_refclk::mmcm_dout_read() }
+    }
+
+    fn drp_ready() -> bool {
+        unsafe { csr::wrpll_refclk::mmcm_dready_read() == 1 }
+    }
+
+    #[allow(dead_code)]
+    fn read(address: u8) -> u16 {
+        set_addr(address);
+        set_enable(true);
+        // Set DADDR on the mmcm and assert DEN for one clock cycle
+        one_clock_cycle();
+
+        set_enable(false);
+        while !drp_ready() {
+            // keep the clock signal until data is ready
+            one_clock_cycle();
+        }
+        get_data()
+    }
+
+    fn write(address: u8, value: u16) {
+        set_addr(address);
+        set_data(value);
+        set_write_enable(true);
+        set_enable(true);
+        // Set DADDR, DI on the mmcm and assert DWE, DEN for one clock cycle
+        one_clock_cycle();
+
+        set_write_enable(false);
+        set_enable(false);
+        while !drp_ready() {
+            // keep the clock signal until write is finished
+            one_clock_cycle();
+        }
+    }
+
+    fn reset(rst: bool) {
+        let val = if rst { 1 } else { 0 };
+        unsafe {
+            csr::wrpll_refclk::mmcm_reset_write(val)
+        }
+    }
+
+    pub fn setup(settings: MmcmSetting, mmcm_bypass: bool) -> Result<(), &'static str> {
+        unsafe {
+            csr::wrpll_refclk::refclk_reset_write(1);
+        }
+
+        if mmcm_bypass {
+            info!("Bypassing mmcm");
+            unsafe {
+                csr::wrpll_refclk::mmcm_bypass_write(1);
+            }
+        } else {
+            // Based on "DRP State Machine" from XAPP888
+            // hold reset HIGH during mmcm config
+            reset(true);
+            write(0x08, settings.clkout0_reg1);
+            write(0x09, settings.clkout0_reg2);
+            write(0x14, settings.clkfbout_reg1);
+            write(0x15, settings.clkfbout_reg2);
+            write(0x16, settings.div_reg);
+            write(0x18, settings.lock_reg1);
+            write(0x19, settings.lock_reg2);
+            write(0x1A, settings.lock_reg3);
+            write(0x28, settings.power_reg);
+            write(0x4E, settings.filt_reg1);
+            write(0x4F, settings.filt_reg2);
+            reset(false);
+
+            // wait for the mmcm to lock
+            clock::spin_us(100);
+
+            let locked = unsafe { csr::wrpll_refclk::mmcm_locked_read() == 1 };
+            if !locked {
+                return Err("mmcm failed to generate 125MHz ref clock from SMA CLKIN");
+            }
+        }
+
+        unsafe {
+            csr::wrpll_refclk::refclk_reset_write(0);
+        }
+
+        Ok(())
+    }
+}

artiq/firmware/libboard_misoc/io_expander.rs

@@ -27,6 +27,26 @@ impl IoExpander {
         const VIRTUAL_LED_MAPPING0: [(u8, u8, u8); 2] = [(0, 0, 6), (1, 1, 6)];
         const VIRTUAL_LED_MAPPING1: [(u8, u8, u8); 2] = [(2, 0, 6), (3, 1, 6)];
 
+        #[cfg(has_si549)]
+        const IODIR_CLK_SEL: u8 = 0x80; // out
+        #[cfg(has_si5324)]
+        const IODIR_CLK_SEL: u8 = 0x00; // in
+        
+        #[cfg(has_si549)]
+        const CLK_SEL_OUT: u8 = 1 << 7;
+        #[cfg(has_si5324)]
+        const CLK_SEL_OUT: u8 = 0;
+        
+        const IODIR0 : [u8; 2] = [
+            0xFF,
+            0xFF & !IODIR_CLK_SEL
+        ];
+        
+        const OUT_TAR0 : [u8; 2] = [
+            0,
+            CLK_SEL_OUT
+        ];        
+
         // Both expanders on SHARED I2C bus
         let mut io_expander = match index {
             0 => IoExpander {
@@ -34,9 +54,9 @@ impl IoExpander {
                 port: 11,
                 address: 0x40,
                 virtual_led_mapping: &VIRTUAL_LED_MAPPING0,
-                iodir: [0xff; 2],
+                iodir: IODIR0,
                 out_current: [0; 2],
-                out_target: [0; 2],
+                out_target: OUT_TAR0,
                 registers: Registers {
                     iodira: 0x00,
                     iodirb: 0x01,
@@ -153,10 +173,10 @@ impl IoExpander {
         }
         self.update_iodir()?;
 
-        self.out_current[0] = 0x00;
-        self.write(self.registers.gpioa, 0x00)?;
-        self.out_current[1] = 0x00;
-        self.write(self.registers.gpiob, 0x00)?;
+        self.write(self.registers.gpioa, self.out_target[0])?;
+        self.out_current[0] = self.out_target[0];
+        self.write(self.registers.gpiob, self.out_target[1])?;
+        self.out_current[1] = self.out_target[1];
         Ok(())
     }
 

artiq/firmware/libboard_misoc/lib.rs

@@ -1,5 +1,4 @@
 #![no_std]
-#![feature(llvm_asm)]
 #![feature(asm)]
 
 extern crate byteorder;

artiq/firmware/libboard_misoc/riscv32/boot.rs

@@ -2,29 +2,26 @@ use super::{cache, pmp};
 use riscv::register::*;
 
 pub unsafe fn reset() -> ! {
-    llvm_asm!(r#"
-        j          _reset_handler
-         nop
-    "# : : : : "volatile");
-    loop {}
+    asm!("j          _reset_handler",
+         "nop",
+         options(nomem, nostack, noreturn)
+    );
 }
 
 pub unsafe fn jump(addr: usize) -> ! {
     cache::flush_cpu_icache();
-    llvm_asm!(r#"
-        jalr       x0, 0($0)
-         nop
-    "# : : "r"(addr) : : "volatile");
-    loop {}
+    asm!("jalr       x0, 0({0})",
+         "nop",
+         in(reg) addr,
+         options(nomem, nostack, noreturn)
+    );
 }
 
 pub unsafe fn start_user(addr: usize) -> ! {
     pmp::enable_user_memory();
     mstatus::set_mpp(mstatus::MPP::User);
     mepc::write(addr);
-    llvm_asm!(
-        "mret"
-        : : : : "volatile"
+    asm!("mret",
+        options(nomem, nostack, noreturn)
     );
-    unreachable!()
 }

artiq/firmware/libboard_misoc/riscv32/cache.rs

@@ -7,20 +7,24 @@ use mem;
 
 pub fn flush_cpu_icache() {
     unsafe {
-        llvm_asm!(r#"
-            fence.i
-            nop
-            nop
-            nop
-            nop
-            nop
-        "# : : : : "volatile");
+        asm!(
+            "fence.i",
+            "nop",
+            "nop",
+            "nop",
+            "nop",
+            "nop",
+            options(preserves_flags, nostack)
+        );
     }
 }
 
 pub fn flush_cpu_dcache() {
     unsafe {
-        llvm_asm!(".word(0x500F)" : : : : "volatile");
+        asm!(
+            ".word(0x500F)",
+            options(preserves_flags)
+        );
     }
 }
 

artiq/firmware/libboard_misoc/riscv32/irq.rs

@@ -0,0 +1,49 @@
+use riscv::register::{mie, mstatus};
+
+fn vmim_write(val: usize) {
+    unsafe {
+        asm!("csrw {csr}, {rs}", rs = in(reg) val, csr = const 0xBC0);
+    }
+}
+
+fn vmim_read() -> usize {
+    let r: usize;
+    unsafe {
+        asm!("csrr {rd}, {csr}", rd = out(reg) r, csr = const 0xBC0);
+    }
+    r
+}
+
+fn vmip_read() -> usize {
+    let r: usize;
+    unsafe {
+        asm!("csrr {rd}, {csr}", rd = out(reg) r, csr = const 0xFC0);
+    }
+    r
+}
+
+pub fn enable_interrupts() {
+    unsafe {
+        mstatus::set_mie();
+        mie::set_mext();
+    }
+}
+
+pub fn disable_interrupts() {
+    unsafe {
+        mstatus::clear_mie();
+        mie::clear_mext();
+    }
+}
+
+pub fn enable(id: u32) {
+    vmim_write(vmim_read() | (1 << id));
+}
+
+pub fn disable(id: u32) {
+    vmim_write(vmim_read() & !(1 << id));
+}
+
+pub fn is_pending(id: u32) -> bool {
+    (vmip_read() >> id) & 1 == 1
+}

artiq/firmware/libboard_misoc/riscv32/mod.rs

@@ -1,3 +1,4 @@
 pub mod cache;
 pub mod boot;
+pub mod irq;
 pub mod pmp;

artiq/firmware/libeh/lib.rs

@@ -1,4 +1,4 @@
-#![feature(lang_items, panic_unwind, libc, unwind_attributes, int_bits_const)]
+#![feature(lang_items, panic_unwind, libc)]
 #![no_std]
 
 extern crate cslice;

artiq/firmware/libproto_artiq/drtioaux_proto.rs

@@ -14,8 +14,51 @@ impl<T> From<IoError<T>> for Error<T> {
     }
 }
 
-pub const DMA_TRACE_MAX_SIZE: usize = /*max size*/512 - /*CRC*/4 - /*packet ID*/1 - /*trace ID*/4 - /*last*/1 -/*length*/2;
-pub const ANALYZER_MAX_SIZE: usize  = /*max size*/512 - /*CRC*/4 - /*packet ID*/1 - /*last*/1 - /*length*/2;
+// maximum size of arbitrary payloads
+// used by satellite -> master analyzer, subkernel exceptions
+pub const SAT_PAYLOAD_MAX_SIZE: usize  = /*max size*/1024 - /*CRC*/4 - /*packet ID*/1 - /*last*/1 - /*length*/2;
+// used by DDMA, subkernel program data (need to provide extra ID and destination)
+pub const MASTER_PAYLOAD_MAX_SIZE: usize = SAT_PAYLOAD_MAX_SIZE - /*source*/1 - /*destination*/1 - /*ID*/4;
+
+#[derive(PartialEq, Clone, Copy, Debug)]
+#[repr(u8)]
+pub enum PayloadStatus {
+    Middle = 0,
+    First = 1,
+    Last = 2,
+    FirstAndLast = 3,
+}
+
+impl From<u8> for PayloadStatus {
+    fn from(value: u8) -> PayloadStatus {
+        match value {
+            0 => PayloadStatus::Middle,
+            1 => PayloadStatus::First,
+            2 => PayloadStatus::Last,
+            3 => PayloadStatus::FirstAndLast,
+            _ => unreachable!(),
+        }
+    }
+}
+
+impl PayloadStatus {
+    pub fn is_first(self) -> bool {
+        self == PayloadStatus::First || self == PayloadStatus::FirstAndLast
+    }
+
+    pub fn is_last(self) -> bool {
+        self == PayloadStatus::Last || self == PayloadStatus::FirstAndLast
+    }
+
+    pub fn from_status(first: bool, last: bool) -> PayloadStatus {
+        match (first, last) {
+            (true, true) => PayloadStatus::FirstAndLast,
+            (true, false) => PayloadStatus::First,
+            (false, true) => PayloadStatus::Last,
+            (false, false) => PayloadStatus::Middle
+        }
+    }
+}
 
 #[derive(PartialEq, Debug)]
 pub enum Packet {
@@ -61,15 +104,29 @@ pub enum Packet {
     AnalyzerHeaderRequest { destination: u8 },
     AnalyzerHeader { sent_bytes: u32, total_byte_count: u64, overflow_occurred: bool },
     AnalyzerDataRequest { destination: u8 },
-    AnalyzerData { last: bool, length: u16, data: [u8; ANALYZER_MAX_SIZE]},
+    AnalyzerData { last: bool, length: u16, data: [u8; SAT_PAYLOAD_MAX_SIZE]},
 
-    DmaAddTraceRequest { destination: u8, id: u32, last: bool, length: u16, trace: [u8; DMA_TRACE_MAX_SIZE] },
-    DmaAddTraceReply { succeeded: bool },
-    DmaRemoveTraceRequest { destination: u8, id: u32 },
-    DmaRemoveTraceReply { succeeded: bool },
-    DmaPlaybackRequest { destination: u8, id: u32, timestamp: u64 },
-    DmaPlaybackReply { succeeded: bool },
-    DmaPlaybackStatus { destination: u8, id: u32, error: u8, channel: u32, timestamp: u64 }
+    DmaAddTraceRequest { 
+        source: u8, destination: u8, 
+        id: u32, status: PayloadStatus, 
+        length: u16, trace: [u8; MASTER_PAYLOAD_MAX_SIZE] 
+    },
+    DmaAddTraceReply { source: u8, destination: u8, id: u32, succeeded: bool },
+    DmaRemoveTraceRequest { source: u8, destination: u8, id: u32 },
+    DmaRemoveTraceReply { destination: u8, succeeded: bool },
+    DmaPlaybackRequest { source: u8, destination: u8, id: u32, timestamp: u64 },
+    DmaPlaybackReply { destination: u8, succeeded: bool },
+    DmaPlaybackStatus { source: u8, destination: u8, id: u32, error: u8, channel: u32, timestamp: u64 },
+
+    SubkernelAddDataRequest { destination: u8, id: u32, status: PayloadStatus, length: u16, data: [u8; MASTER_PAYLOAD_MAX_SIZE] },
+    SubkernelAddDataReply { succeeded: bool },
+    SubkernelLoadRunRequest { source: u8, destination: u8, id: u32, run: bool },
+    SubkernelLoadRunReply { destination: u8, succeeded: bool },
+    SubkernelFinished { destination: u8, id: u32, with_exception: bool, exception_src: u8 },
+    SubkernelExceptionRequest { destination: u8 },
+    SubkernelException { last: bool, length: u16, data: [u8; SAT_PAYLOAD_MAX_SIZE] },
+    SubkernelMessage { source: u8, destination: u8, id: u32, status: PayloadStatus, length: u16, data: [u8; MASTER_PAYLOAD_MAX_SIZE] },
+    SubkernelMessageAck { destination: u8 },
 }
 
 impl Packet {
@@ -215,7 +272,7 @@ impl Packet {
             0xa3 => {
                 let last = reader.read_bool()?;
                 let length = reader.read_u16()?;
-                let mut data: [u8; ANALYZER_MAX_SIZE] = [0; ANALYZER_MAX_SIZE];
+                let mut data: [u8; SAT_PAYLOAD_MAX_SIZE] = [0; SAT_PAYLOAD_MAX_SIZE];
                 reader.read_exact(&mut data[0..length as usize])?;
                 Packet::AnalyzerData {
                     last: last,
@@ -224,40 +281,50 @@ impl Packet {
                 }
             },
 
-            0xb0 => { 
+            0xb0 => {
+                let source = reader.read_u8()?;
                 let destination = reader.read_u8()?;
                 let id = reader.read_u32()?;
-                let last = reader.read_bool()?;
+                let status = reader.read_u8()?;
                 let length = reader.read_u16()?;
-                let mut trace: [u8; DMA_TRACE_MAX_SIZE] = [0; DMA_TRACE_MAX_SIZE];
+                let mut trace: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
                 reader.read_exact(&mut trace[0..length as usize])?;
                 Packet::DmaAddTraceRequest {
+                    source: source,
                     destination: destination,
                     id: id,
-                    last: last,
+                    status: PayloadStatus::from(status),
                     length: length as u16,
                     trace: trace,
                 }
             },
             0xb1 => Packet::DmaAddTraceReply {
+                source: reader.read_u8()?,
+                destination: reader.read_u8()?,
+                id: reader.read_u32()?,
                 succeeded: reader.read_bool()?
             },
             0xb2 => Packet::DmaRemoveTraceRequest {
+                source: reader.read_u8()?,
                 destination: reader.read_u8()?,
                 id: reader.read_u32()?
             },
             0xb3 => Packet::DmaRemoveTraceReply {
+                destination: reader.read_u8()?,
                 succeeded: reader.read_bool()?
             },
             0xb4 => Packet::DmaPlaybackRequest {
+                source: reader.read_u8()?,
                 destination: reader.read_u8()?,
                 id: reader.read_u32()?,
                 timestamp: reader.read_u64()?
             },
             0xb5 => Packet::DmaPlaybackReply {
+                destination: reader.read_u8()?,
                 succeeded: reader.read_bool()?
             },
             0xb6 => Packet::DmaPlaybackStatus {
+                source: reader.read_u8()?,
                 destination: reader.read_u8()?,
                 id: reader.read_u32()?,
                 error: reader.read_u8()?,
@@ -265,6 +332,75 @@ impl Packet {
                 timestamp: reader.read_u64()?
             },
 
+            0xc0 => { 
+                let destination = reader.read_u8()?;
+                let id = reader.read_u32()?;
+                let status = reader.read_u8()?;
+                let length = reader.read_u16()?;
+                let mut data: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut data[0..length as usize])?;
+                Packet::SubkernelAddDataRequest {
+                    destination: destination,
+                    id: id,
+                    status: PayloadStatus::from(status),
+                    length: length as u16,
+                    data: data,
+                }
+            },
+            0xc1 => Packet::SubkernelAddDataReply {
+                succeeded: reader.read_bool()?
+            },
+            0xc4 => Packet::SubkernelLoadRunRequest {
+                source: reader.read_u8()?,
+                destination: reader.read_u8()?,
+                id: reader.read_u32()?,
+                run: reader.read_bool()?
+            },
+            0xc5 => Packet::SubkernelLoadRunReply {
+                destination: reader.read_u8()?,
+                succeeded: reader.read_bool()?
+            },
+            0xc8 => Packet::SubkernelFinished {
+                destination: reader.read_u8()?,
+                id: reader.read_u32()?,
+                with_exception: reader.read_bool()?,
+                exception_src: reader.read_u8()?
+            },
+            0xc9 => Packet::SubkernelExceptionRequest {
+                destination: reader.read_u8()?
+            },
+            0xca => {
+                let last = reader.read_bool()?;
+                let length = reader.read_u16()?;
+                let mut data: [u8; SAT_PAYLOAD_MAX_SIZE] = [0; SAT_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut data[0..length as usize])?;
+                Packet::SubkernelException {
+                    last: last,
+                    length: length,
+                    data: data
+                }
+            },
+            0xcb => {
+                let source = reader.read_u8()?;
+                let destination = reader.read_u8()?;
+                let id = reader.read_u32()?;
+                let status = reader.read_u8()?;
+                let length = reader.read_u16()?;
+                let mut data: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut data[0..length as usize])?;
+                Packet::SubkernelMessage {
+                    source: source,
+                    destination: destination,
+                    id: id,
+                    status: PayloadStatus::from(status),
+                    length: length as u16,
+                    data: data,
+                }
+            },
+            0xcc => Packet::SubkernelMessageAck {
+                destination: reader.read_u8()?
+            },
+
             ty => return Err(Error::UnknownPacket(ty))
         })
     }
@@ -445,48 +581,144 @@ impl Packet {
                 writer.write_all(&data[0..length as usize])?;
             },
 
-            Packet::DmaAddTraceRequest { destination, id, last, trace, length } => {
+            Packet::DmaAddTraceRequest { source, destination, id, status, trace, length } => {
                 writer.write_u8(0xb0)?;
+                writer.write_u8(source)?;
                 writer.write_u8(destination)?;
                 writer.write_u32(id)?;
-                writer.write_bool(last)?;
+                writer.write_u8(status as u8)?;
                 // trace may be broken down to fit within drtio aux memory limit
                 // will be reconstructed by satellite
                 writer.write_u16(length)?;
                 writer.write_all(&trace[0..length as usize])?;
             },
-            Packet::DmaAddTraceReply { succeeded } => {
+            Packet::DmaAddTraceReply { source, destination, id, succeeded } => {
                 writer.write_u8(0xb1)?;
+                writer.write_u8(source)?;
+                writer.write_u8(destination)?;
+                writer.write_u32(id)?;
                 writer.write_bool(succeeded)?;
             },
-            Packet::DmaRemoveTraceRequest { destination, id } => {
+            Packet::DmaRemoveTraceRequest { source, destination, id } => {
                 writer.write_u8(0xb2)?;
+                writer.write_u8(source)?;
                 writer.write_u8(destination)?;
                 writer.write_u32(id)?;
             },
-            Packet::DmaRemoveTraceReply { succeeded } => {
+            Packet::DmaRemoveTraceReply { destination, succeeded } => {
                 writer.write_u8(0xb3)?;
+                writer.write_u8(destination)?;
                 writer.write_bool(succeeded)?;
             },
-            Packet::DmaPlaybackRequest { destination, id, timestamp } => {
+            Packet::DmaPlaybackRequest { source, destination, id, timestamp } => {
                 writer.write_u8(0xb4)?;
+                writer.write_u8(source)?;
                 writer.write_u8(destination)?;
                 writer.write_u32(id)?;
                 writer.write_u64(timestamp)?;
             },
-            Packet::DmaPlaybackReply { succeeded } => {
+            Packet::DmaPlaybackReply { destination, succeeded } => {
                 writer.write_u8(0xb5)?;
+                writer.write_u8(destination)?;
                 writer.write_bool(succeeded)?;
             },
-            Packet::DmaPlaybackStatus { destination, id, error, channel, timestamp } => {
+            Packet::DmaPlaybackStatus { source, destination, id, error, channel, timestamp } => {
                 writer.write_u8(0xb6)?;
+                writer.write_u8(source)?;
                 writer.write_u8(destination)?;
                 writer.write_u32(id)?;
                 writer.write_u8(error)?;
                 writer.write_u32(channel)?;
                 writer.write_u64(timestamp)?;
-            }
+            },
+
+            Packet::SubkernelAddDataRequest { destination, id, status, data, length } => {
+                writer.write_u8(0xc0)?;
+                writer.write_u8(destination)?;
+                writer.write_u32(id)?;
+                writer.write_u8(status as u8)?;
+                writer.write_u16(length)?;
+                writer.write_all(&data[0..length as usize])?;
+            },
+            Packet::SubkernelAddDataReply { succeeded } => {
+                writer.write_u8(0xc1)?;
+                writer.write_bool(succeeded)?;
+            },
+            Packet::SubkernelLoadRunRequest { source, destination, id, run } => {
+                writer.write_u8(0xc4)?;
+                writer.write_u8(source)?;
+                writer.write_u8(destination)?;
+                writer.write_u32(id)?;
+                writer.write_bool(run)?;
+            },
+            Packet::SubkernelLoadRunReply { destination, succeeded } => {
+                writer.write_u8(0xc5)?;
+                writer.write_u8(destination)?;
+                writer.write_bool(succeeded)?;
+            },
+            Packet::SubkernelFinished { destination, id, with_exception, exception_src } => {
+                writer.write_u8(0xc8)?;
+                writer.write_u8(destination)?;
+                writer.write_u32(id)?;
+                writer.write_bool(with_exception)?;
+                writer.write_u8(exception_src)?;
+            },
+            Packet::SubkernelExceptionRequest { destination } => {
+                writer.write_u8(0xc9)?;
+                writer.write_u8(destination)?;
+            },
+            Packet::SubkernelException { last, length, data } => {
+                writer.write_u8(0xca)?;
+                writer.write_bool(last)?;
+                writer.write_u16(length)?;
+                writer.write_all(&data[0..length as usize])?;
+            },
+            Packet::SubkernelMessage { source, destination, id, status, data, length } => {
+                writer.write_u8(0xcb)?;
+                writer.write_u8(source)?;
+                writer.write_u8(destination)?;
+                writer.write_u32(id)?;
+                writer.write_u8(status as u8)?;
+                writer.write_u16(length)?;
+                writer.write_all(&data[0..length as usize])?;
+            },
+            Packet::SubkernelMessageAck { destination } => {
+                writer.write_u8(0xcc)?;
+                writer.write_u8(destination)?;
+            },
         }
         Ok(())
     }
+
+    pub fn routable_destination(&self) -> Option<u8> {
+        // only for packets that could be re-routed, not only forwarded
+        match self {
+            Packet::DmaAddTraceRequest      { destination, .. } => Some(*destination),
+            Packet::DmaAddTraceReply        { destination, .. } => Some(*destination),
+            Packet::DmaRemoveTraceRequest   { destination, .. } => Some(*destination),
+            Packet::DmaRemoveTraceReply     { destination, .. } => Some(*destination),
+            Packet::DmaPlaybackRequest      { destination, .. } => Some(*destination),
+            Packet::DmaPlaybackReply        { destination, .. } => Some(*destination),
+            Packet::SubkernelLoadRunRequest { destination, .. } => Some(*destination),
+            Packet::SubkernelLoadRunReply   { destination, .. } => Some(*destination),
+            Packet::SubkernelMessage        { destination, .. } => Some(*destination),
+            Packet::SubkernelMessageAck     { destination, .. } => Some(*destination),
+            Packet::DmaPlaybackStatus       { destination, .. } => Some(*destination),
+            Packet::SubkernelFinished       { destination, .. } => Some(*destination),
+            _ => None
+        }
+    }
+
+    pub fn expects_response(&self) -> bool {
+        // returns true if the routable packet should elicit a response
+        // e.g. reply, ACK packets end a conversation,
+        // and firmware should not wait for response
+        match self {
+            Packet::DmaAddTraceReply { .. } | Packet::DmaRemoveTraceReply { .. } |
+                Packet::DmaPlaybackReply { .. } | Packet::SubkernelLoadRunReply { .. } |
+                Packet::SubkernelMessageAck { .. } | Packet::DmaPlaybackStatus { .. } |
+                Packet::SubkernelFinished { .. } => false,
+            _ => true
+        }
+    }
 }

artiq/firmware/libproto_artiq/kernel_proto.rs

@@ -10,6 +10,15 @@ pub const KERNELCPU_LAST_ADDRESS:    usize = 0x4fffffff;
 // section in ksupport.elf.
 pub const KSUPPORT_HEADER_SIZE: usize = 0x74;
 
+#[derive(Debug)]
+pub enum SubkernelStatus {
+    NoError,
+    Timeout,
+    IncorrectState,
+    CommLost,
+    OtherError
+}
+
 #[derive(Debug)]
 pub enum Message<'a> {
     LoadRequest(&'a [u8]),
@@ -94,6 +103,14 @@ pub enum Message<'a> {
     SpiReadReply { succeeded: bool, data: u32 },
     SpiBasicReply { succeeded: bool },
 
+    SubkernelLoadRunRequest { id: u32, destination: u8, run: bool },
+    SubkernelLoadRunReply { succeeded: bool },
+    SubkernelAwaitFinishRequest { id: u32, timeout: i64 },
+    SubkernelAwaitFinishReply { status: SubkernelStatus },
+    SubkernelMsgSend { id: u32, destination: Option<u8>, count: u8, tag: &'a [u8], data: *const *const () },
+    SubkernelMsgRecvRequest { id: i32, timeout: i64, tags: &'a [u8] },
+    SubkernelMsgRecvReply { status: SubkernelStatus, count: u8 },
+
     Log(fmt::Arguments<'a>),
     LogSlice(&'a str)
 }

artiq/firmware/libproto_artiq/rpc_proto.rs

@@ -190,9 +190,9 @@ unsafe fn recv_value<R, E>(reader: &mut R, tag: Tag, data: &mut *mut (),
     }
 }
 
-pub fn recv_return<R, E>(reader: &mut R, tag_bytes: &[u8], data: *mut (),
+pub fn recv_return<'a, R, E>(reader: &mut R, tag_bytes: &'a [u8], data: *mut (),
                          alloc: &dyn Fn(usize) -> Result<*mut (), E>)
-                        -> Result<(), E>
+                        -> Result<&'a [u8], E>
     where R: Read + ?Sized,
           E: From<Error<R::ReadError>>
 {
@@ -204,14 +204,16 @@ pub fn recv_return<R, E>(reader: &mut R, tag_bytes: &[u8], data: *mut (),
     let mut data = data;
     unsafe { recv_value(reader, tag, &mut data, alloc)? };
 
-    Ok(())
+    Ok(it.data)
 }
 
-unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *const ())
+unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *const (), write_tags: bool)
                           -> Result<(), Error<W::WriteError>>
     where W: Write + ?Sized
 {
-    writer.write_u8(elt_tag.as_u8())?;
+    if write_tags {
+        writer.write_u8(elt_tag.as_u8())?;
+    }
     match elt_tag {
         // we cannot use NativeEndian::from_slice_i32 as the data is not mutable,
         // and that is not needed as the data is already in native endian
@@ -230,14 +232,14 @@ unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *c
         _ => {
             let mut data = data;
             for _ in 0..length {
-                send_value(writer, elt_tag, &mut data)?;
+                send_value(writer, elt_tag, &mut data, write_tags)?;
             }
         }
     }
     Ok(())
 }
 
-unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
+unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const (), write_tags: bool)
                        -> Result<(), Error<W::WriteError>>
     where W: Write + ?Sized
 {
@@ -248,8 +250,9 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
             $map
         })
     }
-
-    writer.write_u8(tag.as_u8())?;
+    if write_tags {
+        writer.write_u8(tag.as_u8())?;
+    }
     match tag {
         Tag::None => Ok(()),
         Tag::Bool =>
@@ -269,12 +272,14 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
                 writer.write_bytes((*ptr).as_ref())),
         Tag::Tuple(it, arity) => {
             let mut it = it.clone();
-            writer.write_u8(arity)?;
+            if write_tags {
+                writer.write_u8(arity)?;
+            }
             let mut max_alignment = 0;
             for _ in 0..arity {
                 let tag = it.next().expect("truncated tag");
                 max_alignment = core::cmp::max(max_alignment, tag.alignment());
-                send_value(writer, tag, data)?
+                send_value(writer, tag, data, write_tags)?
             }
             *data = round_up_const(*data, max_alignment);
             Ok(())
@@ -286,11 +291,13 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
                 let length = (**ptr).length as usize;
                 writer.write_u32((**ptr).length)?;
                 let tag = it.clone().next().expect("truncated tag");
-                send_elements(writer, tag, length, (**ptr).elements)
+                send_elements(writer, tag, length, (**ptr).elements, write_tags)
             })
         }
         Tag::Array(it, num_dims) => {
-            writer.write_u8(num_dims)?;
+            if write_tags {
+                writer.write_u8(num_dims)?;
+            }
             consume_value!(*const(), |buffer| {
                 let elt_tag = it.clone().next().expect("truncated tag");
 
@@ -302,14 +309,14 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
                     })
                 }
                 let length = total_len as usize;
-                send_elements(writer, elt_tag, length, *buffer)
+                send_elements(writer, elt_tag, length, *buffer, write_tags)
             })
         }
         Tag::Range(it) => {
             let tag = it.clone().next().expect("truncated tag");
-            send_value(writer, tag, data)?;
-            send_value(writer, tag, data)?;
-            send_value(writer, tag, data)?;
+            send_value(writer, tag, data, write_tags)?;
+            send_value(writer, tag, data, write_tags)?;
+            send_value(writer, tag, data, write_tags)?;
             Ok(())
         }
         Tag::Keyword(it) => {
@@ -319,7 +326,7 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
                 writer.write_string(str::from_utf8((*ptr).name.as_ref()).unwrap())?;
                 let tag = it.clone().next().expect("truncated tag");
                 let mut data = ptr.offset(1) as *const ();
-                send_value(writer, tag, &mut data)
+                send_value(writer, tag, &mut data, write_tags)
             })
             // Tag::Keyword never appears in composite types, so we don't have
             // to accurately advance data.
@@ -333,7 +340,7 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
     }
 }
 
-pub fn send_args<W>(writer: &mut W, service: u32, tag_bytes: &[u8], data: *const *const ())
+pub fn send_args<W>(writer: &mut W, service: u32, tag_bytes: &[u8], data: *const *const (), write_tags: bool)
                    -> Result<(), Error<W::WriteError>>
     where W: Write + ?Sized
 {
@@ -350,7 +357,7 @@ pub fn send_args<W>(writer: &mut W, service: u32, tag_bytes: &[u8], data: *const
     for index in 0.. {
         if let Some(arg_tag) = args_it.next() {
             let mut data = unsafe { *data.offset(index) };
-            unsafe { send_value(writer, arg_tag, &mut data)? };
+            unsafe { send_value(writer, arg_tag, &mut data, write_tags)? };
         } else {
             break
         }
@@ -482,7 +489,7 @@ mod tag {
 
     #[derive(Debug, Clone, Copy)]
     pub struct TagIterator<'a> {
-        data: &'a [u8]
+        pub data: &'a [u8]
     }
 
     impl<'a> TagIterator<'a> {

artiq/firmware/libproto_artiq/session_proto.rs

@@ -84,6 +84,8 @@ pub enum Request {
         column:   u32,
         function: u32,
     },
+
+    UploadSubkernel { id: u32, destination: u8, kernel: Vec<u8> },
 }
 
 #[derive(Debug)]
@@ -137,6 +139,11 @@ impl Request {
                 column:   reader.read_u32()?,
                 function: reader.read_u32()?
             },
+            9 => Request::UploadSubkernel {
+                id: reader.read_u32()?,
+                destination: reader.read_u8()?,
+                kernel: reader.read_bytes()?
+            },
 
             ty  => return Err(Error::UnknownPacket(ty))
         })

artiq/firmware/libunwind/src/lib.rs

@@ -3,8 +3,8 @@
 #![feature(link_cfg)]
 #![feature(nll)]
 #![feature(staged_api)]
-#![feature(unwind_attributes)]
 #![feature(static_nobundle)]
+#![feature(c_unwind)]
 #![cfg_attr(not(target_env = "msvc"), feature(libc))]
 
 mod libunwind;

artiq/firmware/libunwind/src/libunwind.rs

@@ -81,9 +81,14 @@ pub type _Unwind_Exception_Cleanup_Fn =
     all(feature = "llvm-libunwind", any(target_os = "fuchsia", target_os = "linux")),
     link(name = "unwind", kind = "static")
 )]
-extern "C" {
-    #[unwind(allowed)]
+extern "C-unwind" {
     pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !;
+}
+#[cfg_attr(
+    all(feature = "llvm-libunwind", any(target_os = "fuchsia", target_os = "linux")),
+    link(name = "unwind", kind = "static")
+)]
+extern "C" {
     pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
     pub fn _Unwind_GetLanguageSpecificData(ctx: *mut _Unwind_Context) -> *mut c_void;
     pub fn _Unwind_GetRegionStart(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
@@ -230,9 +235,13 @@ if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] {
     #[cfg_attr(all(feature = "llvm-libunwind",
                    any(target_os = "fuchsia", target_os = "linux")),
                link(name = "unwind", kind = "static"))]
-    extern "C" {
-        #[unwind(allowed)]
+    extern "C-unwind" {
         pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
+    }
+    #[cfg_attr(all(feature = "llvm-libunwind",
+                   any(target_os = "fuchsia", target_os = "linux")),
+               link(name = "unwind", kind = "static"))]
+    extern "C" {
         pub fn _Unwind_Backtrace(trace: _Unwind_Trace_Fn,
                                  trace_argument: *mut c_void)
                                  -> _Unwind_Reason_Code;
@@ -242,8 +251,7 @@ if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] {
     #[cfg_attr(all(feature = "llvm-libunwind",
                    any(target_os = "fuchsia", target_os = "linux")),
                link(name = "unwind", kind = "static"))]
-    extern "C" {
-        #[unwind(allowed)]
+    extern "C-unwind" {
         pub fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
     }
 

artiq/firmware/riscv32g-unknown-none-elf.json

@@ -21,20 +21,6 @@
   },
   "relro-level": "full",
   "target-family": "unix",
-  "target-pointer-width": "32",
-  "unsupported-abis": [
-    "cdecl",
-    "stdcall",
-    "fastcall",
-    "vectorcall",
-    "thiscall",
-    "aapcs",
-    "win64",
-    "sysv64",
-    "ptx-kernel",
-    "msp430-interrupt",
-    "x86-interrupt",
-    "amdgpu-kernel"
-  ]
+  "target-pointer-width": "32"
 }
   

artiq/firmware/riscv32ima-unknown-none-elf.json

@@ -13,19 +13,5 @@
   "max-atomic-width": 32,
   "panic-strategy": "unwind",
   "relocation-model": "static",
-  "target-pointer-width": "32",
-  "unsupported-abis": [
-    "cdecl",
-    "stdcall",
-    "fastcall",
-    "vectorcall",
-    "thiscall",
-    "aapcs",
-    "win64",
-    "sysv64",
-    "ptx-kernel",
-    "msp430-interrupt",
-    "x86-interrupt",
-    "amdgpu-kernel"
-  ]
+  "target-pointer-width": "32"
 }

artiq/firmware/runtime/Cargo.toml

@@ -37,6 +37,10 @@ features = ["alloc", "medium-ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp"
 
 [dependencies.fringe]
 git = "https://git.m-labs.hk/M-Labs/libfringe.git"
-rev = "3ecbe5"
+rev = "53a964"
 default-features = false
 features = ["alloc"]
+
+[dependencies.tar-no-std]
+git = "https://git.m-labs.hk/M-Labs/tar-no-std"
+rev = "2ab6dc5"

artiq/firmware/runtime/Makefile

@@ -19,7 +19,7 @@ $(RUSTOUT)/libruntime.a:
 	--target $(RUNTIME_DIRECTORY)/../$(CARGO_TRIPLE).json
 
 runtime.elf: $(RUSTOUT)/libruntime.a ksupport_data.o
-	$(link) -T $(RUNTIME_DIRECTORY)/runtime.ld \
+	$(link) -T $(RUNTIME_DIRECTORY)/../firmware.ld \
 		-lunwind-vexriscv-bare -m elf32lriscv
 
 ksupport_data.o: ../ksupport/ksupport.elf

artiq/firmware/runtime/analyzer.rs

@@ -52,21 +52,18 @@ pub mod remote_analyzer {
         pub data: Vec<u8>
     }
 
-    pub fn get_data(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
+    pub fn get_data(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
         up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>
-    ) -> Result<RemoteBuffer, &'static str> {
+    ) -> Result<RemoteBuffer, drtio::Error> {
             // gets data from satellites and returns consolidated data
             let mut remote_data: Vec<u8> = Vec::new();
             let mut remote_overflow = false;
             let mut remote_sent_bytes = 0;
             let mut remote_total_bytes = 0;
 
-            let data_vec = match drtio::analyzer_query(
-                io, aux_mutex, routing_table, up_destinations
-            ) {
-                Ok(data_vec) => data_vec,
-                Err(e) => return Err(e)
-            };
+            let data_vec = drtio::analyzer_query(
+                io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, up_destinations
+            )?;
             for data in data_vec {
                 remote_total_bytes += data.total_byte_count;
                 remote_sent_bytes += data.sent_bytes;
@@ -85,7 +82,8 @@ pub mod remote_analyzer {
 
 
 
-fn worker(stream: &mut TcpStream, _io: &Io, _aux_mutex: &Mutex, 
+fn worker(stream: &mut TcpStream, _io: &Io, _aux_mutex: &Mutex,
+    _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex,
     _routing_table: &drtio_routing::RoutingTable,
     _up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>
 ) -> Result<(), IoError<SchedError>> {
@@ -99,7 +97,7 @@ fn worker(stream: &mut TcpStream, _io: &Io, _aux_mutex: &Mutex,
 
     #[cfg(has_drtio)]
     let remote = remote_analyzer::get_data(
-        _io, _aux_mutex, _routing_table, _up_destinations);
+        _io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, _up_destinations);
     #[cfg(has_drtio)]
     let (header, remote_data) = match remote {
         Ok(remote) => (Header {
@@ -146,7 +144,7 @@ fn worker(stream: &mut TcpStream, _io: &Io, _aux_mutex: &Mutex,
     Ok(())
 }
 
-pub fn thread(io: Io, aux_mutex: &Mutex,
+pub fn thread(io: Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
     routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>,
     up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>) {
     let listener = TcpListener::new(&io, 65535);
@@ -161,7 +159,7 @@ pub fn thread(io: Io, aux_mutex: &Mutex,
         disarm();
 
         let routing_table = routing_table.borrow();
-        match worker(&mut stream, &io, aux_mutex, &routing_table, up_destinations) {
+        match worker(&mut stream, &io, aux_mutex, ddma_mutex, subkernel_mutex, &routing_table, up_destinations) {
             Ok(())   => (),
             Err(err) => error!("analyzer aborted: {}", err)
         }

artiq/firmware/runtime/kern_hwreq.rs

@@ -11,13 +11,15 @@ use board_artiq::spi as local_spi;
 #[cfg(has_drtio)]
 mod remote_i2c {
     use drtioaux;
+    use drtio_routing;
     use rtio_mgt::drtio;
     use sched::{Io, Mutex};
 
-    pub fn start(io: &Io, aux_mutex: &Mutex,
+    pub fn start(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8
     ) -> Result<(), &'static str> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::I2cStartRequest {
                 destination: destination,
                 busno: busno
@@ -32,15 +34,16 @@ mod remote_i2c {
             }
             Err(e) => {
                 error!("aux packet error ({})", e);
-                Err(e)
+                Err("aux packet error")
             }
         }
     }
 
-    pub fn restart(io: &Io, aux_mutex: &Mutex, 
+    pub fn restart(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8
     ) -> Result<(), &'static str> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::I2cRestartRequest {
                 destination: destination,
                 busno: busno
@@ -55,15 +58,16 @@ mod remote_i2c {
             }
             Err(e) => {
                 error!("aux packet error ({})", e);
-                Err(e)
+                Err("aux packet error")
             }
         }
     }
 
-    pub fn stop(io: &Io, aux_mutex: &Mutex,
+    pub fn stop(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8
     ) -> Result<(), &'static str> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno,
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
             &drtioaux::Packet::I2cStopRequest  {
                 destination: destination,
                 busno: busno
@@ -78,15 +82,16 @@ mod remote_i2c {
             }
             Err(e) => {
                 error!("aux packet error ({})", e);
-                Err(e)
+                Err("aux packet error")
             }
         }
     }
 
-    pub fn write(io: &Io, aux_mutex: &Mutex,
+    pub fn write(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8, data: u8
     ) -> Result<bool, &'static str> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::I2cWriteRequest {
                 destination: destination,
                 busno: busno,
@@ -102,15 +107,16 @@ mod remote_i2c {
             }
             Err(e) => {
                 error!("aux packet error ({})", e);
-                Err(e)
+                Err("aux packet error")
             }
         }
     }
 
-    pub fn read(io: &Io, aux_mutex: &Mutex,
+    pub fn read(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8, ack: bool
     ) -> Result<u8, &'static str> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::I2cReadRequest {
                 destination: destination,
                 busno: busno,
@@ -126,15 +132,16 @@ mod remote_i2c {
             }
             Err(e) => {
                 error!("aux packet error ({})", e);
-                Err(e)
+                Err("aux packet error")
             }
         }
     }
 
-    pub fn switch_select(io: &Io, aux_mutex: &Mutex,
+    pub fn switch_select(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8, address: u8, mask: u8
     ) -> Result<(), &'static str> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::I2cSwitchSelectRequest {
                 destination: destination,
                 busno: busno,
@@ -151,7 +158,7 @@ mod remote_i2c {
             }
             Err(e) => {
                 error!("aux packet error ({})", e);
-                Err(e)
+                Err("aux packet error")
             }
         }
     }
@@ -160,13 +167,15 @@ mod remote_i2c {
 #[cfg(has_drtio)]
 mod remote_spi {
     use drtioaux;
+    use drtio_routing;
     use rtio_mgt::drtio;
     use sched::{Io, Mutex};
 
-    pub fn set_config(io: &Io, aux_mutex: &Mutex,
+    pub fn set_config(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8, flags: u8, length: u8, div: u8, cs: u8
     ) -> Result<(), ()> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, &drtioaux::Packet::SpiSetConfigRequest {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, &drtioaux::Packet::SpiSetConfigRequest {
             destination: destination,
             busno: busno,
             flags: flags,
@@ -189,10 +198,11 @@ mod remote_spi {
         }
     }
 
-    pub fn write(io: &Io, aux_mutex: &Mutex,
+    pub fn write(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         linkno: u8, destination: u8, busno: u8, data: u32
     ) -> Result<(), ()> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, &drtioaux::Packet::SpiWriteRequest {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, &drtioaux::Packet::SpiWriteRequest {
             destination: destination,
             busno: busno,
             data: data
@@ -212,9 +222,10 @@ mod remote_spi {
         }
     }
 
-    pub fn read(io: &Io, aux_mutex: &Mutex, linkno: u8, destination: u8, busno: u8
+    pub fn read(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable, linkno: u8, destination: u8, busno: u8
     ) -> Result<u32, ()> {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::SpiReadRequest {
                 destination: destination,
                 busno: busno
@@ -238,7 +249,7 @@ mod remote_spi {
 
 #[cfg(has_drtio)]
 macro_rules! dispatch {
-    ($io:ident, $aux_mutex:ident, $mod_local:ident, $mod_remote:ident, $routing_table:ident, $busno:expr, $func:ident $(, $param:expr)*) => {{
+    ($io:ident, $aux_mutex:ident, $ddma_mutex:ident, $subkernel_mutex:ident, $mod_local:ident, $mod_remote:ident, $routing_table:ident, $busno:expr, $func:ident $(, $param:expr)*) => {{
         let destination = ($busno >> 16) as u8;
         let busno = $busno as u8;
         let hop = $routing_table.0[destination as usize][0];
@@ -246,27 +257,27 @@ macro_rules! dispatch {
             $mod_local::$func(busno, $($param, )*)
         } else {
             let linkno = hop - 1;
-            $mod_remote::$func($io, $aux_mutex, linkno, destination, busno, $($param, )*)
+            $mod_remote::$func($io, $aux_mutex, $ddma_mutex, $subkernel_mutex, $routing_table, linkno, destination, busno, $($param, )*)
         }
     }}
 }
 
 #[cfg(not(has_drtio))]
 macro_rules! dispatch {
-    ($io:ident, $aux_mutex:ident, $mod_local:ident, $mod_remote:ident, $routing_table:ident, $busno:expr, $func:ident $(, $param:expr)*) => {{
+    ($io:ident, $aux_mutex:ident, $ddma_mutex:ident, $subkernel_mutex:ident, $mod_local:ident, $mod_remote:ident, $routing_table:ident, $busno:expr, $func:ident $(, $param:expr)*) => {{
         let busno = $busno as u8;
         $mod_local::$func(busno, $($param, )*)
     }}
 }
 
-pub fn process_kern_hwreq(io: &Io, aux_mutex: &Mutex,
-        _routing_table: &drtio_routing::RoutingTable,
+pub fn process_kern_hwreq(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable,
         _up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
         request: &kern::Message) -> Result<bool, Error<SchedError>> {
     match request {
         &kern::RtioInitRequest => {
             info!("resetting RTIO");
-            rtio_mgt::reset(io, aux_mutex);
+            rtio_mgt::reset(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table);
             kern_acknowledge()
         }
 
@@ -282,47 +293,47 @@ pub fn process_kern_hwreq(io: &Io, aux_mutex: &Mutex,
         }
 
         &kern::I2cStartRequest { busno } => {
-            let succeeded = dispatch!(io, aux_mutex, local_i2c, remote_i2c, _routing_table, busno, start).is_ok();
+            let succeeded = dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_i2c, remote_i2c, routing_table, busno, start).is_ok();
             kern_send(io, &kern::I2cBasicReply { succeeded: succeeded })
         }
         &kern::I2cRestartRequest { busno } => {
-            let succeeded = dispatch!(io, aux_mutex, local_i2c, remote_i2c, _routing_table, busno, restart).is_ok();
+            let succeeded = dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_i2c, remote_i2c, routing_table, busno, restart).is_ok();
             kern_send(io, &kern::I2cBasicReply { succeeded: succeeded })
         }
         &kern::I2cStopRequest { busno } => {
-            let succeeded = dispatch!(io, aux_mutex, local_i2c, remote_i2c, _routing_table, busno, stop).is_ok();
+            let succeeded = dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_i2c, remote_i2c, routing_table, busno, stop).is_ok();
             kern_send(io, &kern::I2cBasicReply { succeeded: succeeded })
         }
         &kern::I2cWriteRequest { busno, data } => {
-            match dispatch!(io, aux_mutex, local_i2c, remote_i2c, _routing_table, busno, write, data) {
+            match dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_i2c, remote_i2c, routing_table, busno, write, data) {
                 Ok(ack) => kern_send(io, &kern::I2cWriteReply { succeeded: true, ack: ack }),
                 Err(_) => kern_send(io, &kern::I2cWriteReply { succeeded: false, ack: false })
             }
         }
         &kern::I2cReadRequest { busno, ack } => {
-            match dispatch!(io, aux_mutex, local_i2c, remote_i2c, _routing_table, busno, read, ack) {
+            match dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_i2c, remote_i2c, routing_table, busno, read, ack) {
                 Ok(data) => kern_send(io, &kern::I2cReadReply { succeeded: true, data: data }),
                 Err(_) => kern_send(io, &kern::I2cReadReply { succeeded: false, data: 0xff })
             }
         }
         &kern::I2cSwitchSelectRequest { busno, address, mask } => {
-            let succeeded = dispatch!(io, aux_mutex, local_i2c, remote_i2c, _routing_table, busno,
+            let succeeded = dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_i2c, remote_i2c, routing_table, busno,
                 switch_select, address, mask).is_ok();
             kern_send(io, &kern::I2cBasicReply { succeeded: succeeded })
         }
 
         &kern::SpiSetConfigRequest { busno, flags, length, div, cs } => {
-            let succeeded = dispatch!(io, aux_mutex, local_spi, remote_spi, _routing_table, busno,
+            let succeeded = dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_spi, remote_spi, routing_table, busno,
                 set_config, flags, length, div, cs).is_ok();
             kern_send(io, &kern::SpiBasicReply { succeeded: succeeded })
         },
         &kern::SpiWriteRequest { busno, data } => {
-            let succeeded = dispatch!(io, aux_mutex, local_spi, remote_spi, _routing_table, busno,
+            let succeeded = dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_spi, remote_spi, routing_table, busno,
                 write, data).is_ok();
             kern_send(io, &kern::SpiBasicReply { succeeded: succeeded })
         }
         &kern::SpiReadRequest { busno } => {
-            match dispatch!(io, aux_mutex, local_spi, remote_spi, _routing_table, busno, read) {
+            match dispatch!(io, aux_mutex, ddma_mutex, subkernel_mutex, local_spi, remote_spi, routing_table, busno, read) {
                 Ok(data) => kern_send(io, &kern::SpiReadReply { succeeded: true, data: data }),
                 Err(_) => kern_send(io, &kern::SpiReadReply { succeeded: false, data: 0 })
             }

artiq/firmware/runtime/kernel.rs

@@ -87,3 +87,353 @@ unsafe fn load_image(image: &[u8]) -> Result<(), &'static str> {
 pub fn validate(ptr: usize) -> bool {
     ptr >= KERNELCPU_EXEC_ADDRESS && ptr <= KERNELCPU_LAST_ADDRESS
 }
+
+
+#[cfg(has_drtio)]
+pub mod subkernel {
+    use alloc::{vec::Vec, collections::btree_map::BTreeMap};
+    use board_artiq::drtio_routing::RoutingTable;
+    use board_misoc::clock;
+    use proto_artiq::{drtioaux_proto::{PayloadStatus, MASTER_PAYLOAD_MAX_SIZE}, rpc_proto as rpc};
+    use io::Cursor;
+    use rtio_mgt::drtio;
+    use sched::{Io, Mutex, Error as SchedError};
+
+    #[derive(Debug, PartialEq, Clone, Copy)]
+    pub enum FinishStatus {
+        Ok,
+        CommLost,
+        Exception(u8) // exception source
+    }
+
+    #[derive(Debug, PartialEq, Clone, Copy)]
+    pub enum SubkernelState {
+        NotLoaded,
+        Uploaded,
+        Running,
+        Finished { status: FinishStatus },
+    }
+
+    #[derive(Fail, Debug)]
+    pub enum Error {
+        #[fail(display = "Timed out waiting for subkernel")]
+        Timeout,
+        #[fail(display = "Subkernel is in incorrect state for the given operation")]
+        IncorrectState,
+        #[fail(display = "DRTIO error: {}", _0)]
+        DrtioError(#[cause] drtio::Error),
+        #[fail(display = "scheduler error: {}", _0)]
+        SchedError(#[cause] SchedError),
+        #[fail(display = "rpc io error")]
+        RpcIoError,
+        #[fail(display = "subkernel finished prematurely")]
+        SubkernelFinished,
+    }
+
+    impl From<drtio::Error> for Error {
+        fn from(value: drtio::Error) -> Error {
+            match value {
+                drtio::Error::SchedError(x) => Error::SchedError(x),
+                x => Error::DrtioError(x),
+            }
+        }
+    }
+
+    impl From<SchedError> for Error {
+        fn from(value: SchedError) -> Error {
+                Error::SchedError(value)
+        }
+    }
+
+    impl From<io::Error<!>> for Error {
+        fn from(_value: io::Error<!>) -> Error  {
+            Error::RpcIoError
+        }
+    }
+
+    pub struct SubkernelFinished {
+        pub id: u32,
+        pub comm_lost: bool,
+        pub exception: Option<Vec<u8>>
+    }
+
+    struct Subkernel {
+        pub destination: u8,
+        pub data: Vec<u8>,
+        pub state: SubkernelState
+    }
+
+    impl Subkernel {
+        pub fn new(destination: u8, data: Vec<u8>) -> Self {
+            Subkernel {
+                destination: destination,
+                data: data,
+                state: SubkernelState::NotLoaded
+            }
+        }
+    }
+
+    static mut SUBKERNELS: BTreeMap<u32, Subkernel> = BTreeMap::new();
+
+    pub fn add_subkernel(io: &Io, subkernel_mutex: &Mutex, id: u32, destination: u8, kernel: Vec<u8>) -> Result<(), Error> {
+        let _lock = subkernel_mutex.lock(io)?;
+        unsafe { SUBKERNELS.insert(id, Subkernel::new(destination, kernel)); }
+        Ok(())
+    }
+
+    pub fn upload(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+             routing_table: &RoutingTable, id: u32) -> Result<(), Error> {
+        let _lock = subkernel_mutex.lock(io)?;
+        let subkernel = unsafe { SUBKERNELS.get_mut(&id).unwrap() };
+        drtio::subkernel_upload(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, 
+            subkernel.destination, &subkernel.data)?;
+        subkernel.state = SubkernelState::Uploaded; 
+        Ok(()) 
+    }
+
+    pub fn load(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, routing_table: &RoutingTable,
+            id: u32, run: bool) -> Result<(), Error> {
+        let _lock = subkernel_mutex.lock(io)?;
+        let subkernel = unsafe { SUBKERNELS.get_mut(&id).unwrap() };
+        if subkernel.state != SubkernelState::Uploaded {
+            error!("for id: {} expected Uploaded, got: {:?}", id, subkernel.state);
+            return Err(Error::IncorrectState);
+        }
+        drtio::subkernel_load(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, subkernel.destination, run)?;
+        if run {
+            subkernel.state = SubkernelState::Running;
+        }
+        Ok(())
+    }
+
+    pub fn clear_subkernels(io: &Io, subkernel_mutex: &Mutex) -> Result<(), Error> {
+        let _lock = subkernel_mutex.lock(io)?;
+        unsafe {
+            SUBKERNELS = BTreeMap::new();
+            MESSAGE_QUEUE = Vec::new();
+            CURRENT_MESSAGES = BTreeMap::new();
+        }
+        Ok(())
+    }
+
+    pub fn subkernel_finished(io: &Io, subkernel_mutex: &Mutex, id: u32, with_exception: bool, exception_src: u8) {
+        // called upon receiving DRTIO SubkernelRunDone
+        let _lock = subkernel_mutex.lock(io).unwrap();
+        let subkernel = unsafe { SUBKERNELS.get_mut(&id) };
+        // may be None if session ends and is cleared
+        if let Some(subkernel) = subkernel {
+            // ignore other messages, could be a late finish reported
+            if subkernel.state == SubkernelState::Running {
+                subkernel.state = SubkernelState::Finished {
+                    status: match with_exception {
+                    true => FinishStatus::Exception(exception_src),
+                    false => FinishStatus::Ok,
+                    }
+                }
+            }
+        }
+    }
+
+    pub fn destination_changed(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+             routing_table: &RoutingTable, destination: u8, up: bool) {
+        let _lock = subkernel_mutex.lock(io).unwrap();
+        let subkernels_iter = unsafe { SUBKERNELS.iter_mut() };
+        for (id, subkernel) in subkernels_iter {
+            if subkernel.destination == destination {
+                if up {
+                    match drtio::subkernel_upload(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, *id, destination, &subkernel.data)
+                    {
+                        Ok(_) => subkernel.state = SubkernelState::Uploaded,
+                        Err(e) => error!("Error adding subkernel on destination {}: {}", destination, e)
+                    }
+                } else {
+                    subkernel.state = match subkernel.state {
+                        SubkernelState::Running => SubkernelState::Finished { status: FinishStatus::CommLost },
+                        _ => SubkernelState::NotLoaded,
+                    }
+                }
+            }
+        }
+    }
+
+    pub fn retrieve_finish_status(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &RoutingTable, id: u32) -> Result<SubkernelFinished, Error> {
+        let _lock = subkernel_mutex.lock(io)?;
+        let mut subkernel = unsafe { SUBKERNELS.get_mut(&id).unwrap() };
+        match subkernel.state {
+            SubkernelState::Finished { status } => {
+                subkernel.state = SubkernelState::Uploaded;
+                Ok(SubkernelFinished {
+                    id: id,
+                    comm_lost: status == FinishStatus::CommLost,
+                    exception: if let FinishStatus::Exception(dest) = status { 
+                        Some(drtio::subkernel_retrieve_exception(io, aux_mutex, ddma_mutex, subkernel_mutex,
+                            routing_table, dest)?) 
+                    } else { None }
+                })
+            },
+            _ => {
+                Err(Error::IncorrectState)
+            }
+        }
+    }
+
+    pub fn await_finish(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &RoutingTable, id: u32, timeout: i64) -> Result<SubkernelFinished, Error> {
+        {
+            let _lock = subkernel_mutex.lock(io)?;
+            match unsafe { SUBKERNELS.get(&id).unwrap().state } {
+                SubkernelState::Running | SubkernelState::Finished { .. } => (),
+                _ => {
+                    return Err(Error::IncorrectState);
+                }
+            }
+        }
+        let max_time = clock::get_ms() + timeout as u64;
+        let _res = io.until(|| {
+            if timeout > 0 && clock::get_ms() > max_time {
+                return true;
+            }
+            if subkernel_mutex.test_lock() {
+                // cannot lock again within io.until - scheduler guarantees
+                // that it will not be interrupted - so only test the lock
+                return false;
+            }
+            let subkernel = unsafe { SUBKERNELS.get(&id).unwrap() };
+            match subkernel.state {
+                SubkernelState::Finished { .. } => true,
+                _ => false
+            }
+        })?;
+        if timeout > 0 && clock::get_ms() > max_time {
+            error!("Remote subkernel finish await timed out");
+            return Err(Error::Timeout);
+        }
+        retrieve_finish_status(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id)
+    }
+
+    pub struct Message {
+        from_id: u32,
+        pub count: u8,
+        pub data: Vec<u8>
+    }
+
+    // FIFO queue of messages
+    static mut MESSAGE_QUEUE: Vec<Message> = Vec::new();
+    // currently under construction message(s) (can be from multiple sources)
+    static mut CURRENT_MESSAGES: BTreeMap<u32, Message> = BTreeMap::new();
+
+    pub fn message_handle_incoming(io: &Io, subkernel_mutex: &Mutex, 
+        id: u32, status: PayloadStatus, length: usize, data: &[u8; MASTER_PAYLOAD_MAX_SIZE]) {
+        // called when receiving a message from satellite
+        let _lock = match subkernel_mutex.lock(io) {
+            Ok(lock) => lock,
+            // may get interrupted, when session is cancelled or main kernel finishes without await
+            Err(_) => return,
+        };
+        let subkernel = unsafe { SUBKERNELS.get(&id) };
+        if subkernel.is_some() && subkernel.unwrap().state != SubkernelState::Running {
+            warn!("received a message for a non-running subkernel #{}", id);
+            // do not add messages for non-running or deleted subkernels
+            return
+        }
+        if status.is_first() {
+            unsafe {
+                CURRENT_MESSAGES.remove(&id);
+            }
+        }
+        match unsafe { CURRENT_MESSAGES.get_mut(&id) } {
+            Some(message) => message.data.extend(&data[..length]),
+            None => unsafe {
+                CURRENT_MESSAGES.insert(id, Message {
+                    from_id: id,
+                    count: data[0],
+                    data: data[1..length].to_vec()
+                });
+            }
+        };
+        if status.is_last() {
+            unsafe { 
+                // when done, remove from working queue
+                MESSAGE_QUEUE.push(CURRENT_MESSAGES.remove(&id).unwrap());
+            };
+        }
+    }
+
+    pub fn message_await(io: &Io, subkernel_mutex: &Mutex, id: u32, timeout: i64
+    ) -> Result<Message, Error> {
+        let is_subkernel = {
+            let _lock = subkernel_mutex.lock(io)?;
+            let is_subkernel = unsafe { SUBKERNELS.get(&id).is_some() };
+            if is_subkernel {
+            match unsafe { SUBKERNELS.get(&id).unwrap().state } {
+                SubkernelState::Finished { status: FinishStatus::Ok } |
+                SubkernelState::Running => (),
+                SubkernelState::Finished {
+                    status: FinishStatus::CommLost,
+                    } => return Err(Error::SubkernelFinished),
+                _ => return Err(Error::IncorrectState)
+            }
+        }
+            is_subkernel
+        };
+        let max_time = clock::get_ms() + timeout as u64;
+        let message = io.until_ok(|| {
+            if timeout > 0 && clock::get_ms() > max_time {
+                return Ok(None);
+            }
+            if subkernel_mutex.test_lock() {
+                return Err(());
+            }
+            let msg_len = unsafe { MESSAGE_QUEUE.len() };
+            for i in 0..msg_len {
+                let msg = unsafe { &MESSAGE_QUEUE[i] };
+                if msg.from_id == id {
+                    return Ok(Some(unsafe { MESSAGE_QUEUE.remove(i) }));
+                }
+            }
+            if is_subkernel {
+            match unsafe { SUBKERNELS.get(&id).unwrap().state } {
+                SubkernelState::Finished { status: FinishStatus::CommLost } | 
+                    SubkernelState::Finished { status: FinishStatus::Exception(_) }  => return Ok(None),
+                _ => ()
+                }
+            }
+            Err(())
+        });
+        match message {
+            Ok(Some(message)) => Ok(message),
+            Ok(None) => {
+                if clock::get_ms() > max_time {
+                    Err(Error::Timeout)
+                } else {
+                    let _lock = subkernel_mutex.lock(io)?;
+                    match unsafe { SUBKERNELS.get(&id).unwrap().state } {
+                        SubkernelState::Finished { .. } => Err(Error::SubkernelFinished),
+                        _ => Err(Error::IncorrectState)
+                    }
+                }
+            }
+            Err(e) => Err(Error::SchedError(e)),
+        }
+    }
+
+    pub fn message_send<'a>(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &RoutingTable, id: u32, destination: Option<u8>, count: u8, tag: &'a [u8], message: *const *const ()
+    ) -> Result<(), Error> {
+        let mut writer = Cursor::new(Vec::new());
+        // reuse rpc code for sending arbitrary data
+        rpc::send_args(&mut writer, 0, tag, message, false)?;
+        // skip service tag, but overwrite first byte with tag count
+        let destination = destination.unwrap_or_else(|| {
+                let _lock = subkernel_mutex.lock(io).unwrap();
+                unsafe { SUBKERNELS.get(&id).unwrap().destination }
+            }
+        );
+        let data = &mut writer.into_inner()[3..];
+        data[0] = count;
+        Ok(drtio::subkernel_send_message(
+            io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, destination, data
+        )?)
+    }
+}

artiq/firmware/runtime/main.rs

@@ -1,4 +1,4 @@
-#![feature(lang_items, panic_info_message, const_btree_new, iter_advance_by)]
+#![feature(lang_items, panic_info_message, const_btree_new, iter_advance_by, never_type)]
 #![no_std]
 
 extern crate dyld;
@@ -25,6 +25,8 @@ extern crate board_artiq;
 extern crate logger_artiq;
 extern crate proto_artiq;
 extern crate riscv;
+#[cfg(has_drtio)]
+extern crate tar_no_std;
 
 use alloc::collections::BTreeMap;
 use core::cell::RefCell;
@@ -34,12 +36,16 @@ use smoltcp::wire::HardwareAddress;
 use board_misoc::{csr, ident, clock, spiflash, config, net_settings, pmp, boot};
 #[cfg(has_ethmac)]
 use board_misoc::ethmac;
+#[cfg(soc_platform = "kasli")]
+use board_misoc::irq;
 use board_misoc::net_settings::{Ipv4AddrConfig};
 #[cfg(has_drtio)]
 use board_artiq::drtioaux;
 use board_artiq::drtio_routing;
 use board_artiq::{mailbox, rpc_queue};
 use proto_artiq::{mgmt_proto, moninj_proto, rpc_proto, session_proto, kernel_proto};
+#[cfg(has_wrpll)]
+use board_artiq::si549;
 #[cfg(has_drtio_eem)]
 use board_artiq::drtio_eem;
 #[cfg(has_rtio_analyzer)]
@@ -189,6 +195,7 @@ fn startup() {
     let aux_mutex = sched::Mutex::new();
 
     let ddma_mutex = sched::Mutex::new();
+    let subkernel_mutex = sched::Mutex::new();
 
     let mut scheduler = sched::Scheduler::new(interface);
     let io = scheduler.io();
@@ -197,7 +204,7 @@ fn startup() {
         io.spawn(4096, dhcp::dhcp_thread);
     }
 
-    rtio_mgt::startup(&io, &aux_mutex, &drtio_routing_table, &up_destinations, &ddma_mutex);
+    rtio_mgt::startup(&io, &aux_mutex, &drtio_routing_table, &up_destinations, &ddma_mutex, &subkernel_mutex);
 
     io.spawn(4096, mgmt::thread);
     {
@@ -205,20 +212,25 @@ fn startup() {
         let drtio_routing_table = drtio_routing_table.clone();
         let up_destinations = up_destinations.clone();
         let ddma_mutex = ddma_mutex.clone();
-        io.spawn(16384, move |io| { session::thread(io, &aux_mutex, &drtio_routing_table, &up_destinations, &ddma_mutex) });
+        let subkernel_mutex = subkernel_mutex.clone();
+        io.spawn(32768, move |io| { session::thread(io, &aux_mutex, &drtio_routing_table, &up_destinations, &ddma_mutex, &subkernel_mutex) });
     }
     #[cfg(any(has_rtio_moninj, has_drtio))]
     {
         let aux_mutex = aux_mutex.clone();
+        let ddma_mutex = ddma_mutex.clone();
+        let subkernel_mutex = subkernel_mutex.clone();
         let drtio_routing_table = drtio_routing_table.clone();
-        io.spawn(4096, move |io| { moninj::thread(io, &aux_mutex, &drtio_routing_table) });
+        io.spawn(4096, move |io| { moninj::thread(io, &aux_mutex, &ddma_mutex, &subkernel_mutex, &drtio_routing_table) });
     }
     #[cfg(has_rtio_analyzer)]
     {
         let aux_mutex = aux_mutex.clone();
+        let ddma_mutex = ddma_mutex.clone();
+        let subkernel_mutex = subkernel_mutex.clone();
         let drtio_routing_table = drtio_routing_table.clone();
         let up_destinations = up_destinations.clone();
-        io.spawn(8192, move |io| { analyzer::thread(io, &aux_mutex, &drtio_routing_table, &up_destinations) });
+        io.spawn(8192, move |io| { analyzer::thread(io, &aux_mutex, &ddma_mutex, &subkernel_mutex, &drtio_routing_table, &up_destinations) });
     }
 
     #[cfg(has_grabber)]
@@ -257,6 +269,11 @@ pub extern fn main() -> i32 {
 
         pmp::init_stack_guard(&_sstack_guard as *const u8 as usize);
 
+        #[cfg(soc_platform = "kasli")]
+        irq::enable_interrupts();
+        #[cfg(has_wrpll)]
+        irq::enable(csr::WRPLL_INTERRUPT);
+
         logger_artiq::BufferLogger::new(&mut LOG_BUFFER[..]).register(||
             boot::start_user(startup as usize)
         );
@@ -291,8 +308,11 @@ pub extern fn exception(regs: *const TrapFrame) {
     let pc = mepc::read();
     let cause = mcause::read().cause();
     match cause {
-        mcause::Trap::Interrupt(source) => {
-            info!("Called interrupt with {:?}", source);
+        mcause::Trap::Interrupt(_source) => {
+            #[cfg(has_wrpll)]
+            if irq::is_pending(csr::WRPLL_INTERRUPT) {
+                si549::wrpll::interrupt_handler();
+            }
         },
 
         mcause::Trap::Exception(mcause::Exception::UserEnvCall) => {

artiq/firmware/runtime/moninj.rs

@@ -50,12 +50,15 @@ mod local_moninj {
 #[cfg(has_drtio)]
 mod remote_moninj {
     use drtioaux;
+    use drtio_routing;
     use rtio_mgt::drtio;
     use sched::{Io, Mutex};
 
-    pub fn read_probe(io: &Io, aux_mutex: &Mutex, linkno: u8,
+    pub fn read_probe(io: &Io, aux_mutex: &Mutex, 
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
         destination: u8, channel: u16, probe: u8) -> u64 {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::MonitorRequest { 
                 destination: destination,
                 channel: channel,
@@ -69,7 +72,9 @@ mod remote_moninj {
         0
     }
 
-    pub fn inject(io: &Io, aux_mutex: &Mutex, linkno: u8, 
+    pub fn inject(io: &Io, aux_mutex: &Mutex,
+        _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex, 
+        _routing_table: &drtio_routing::RoutingTable, linkno: u8,
         destination: u8, channel: u16, overrd: u8, value: u8) {
         let _lock = aux_mutex.lock(io).unwrap();
         drtioaux::send(linkno, &drtioaux::Packet::InjectionRequest {
@@ -80,9 +85,11 @@ mod remote_moninj {
         }).unwrap();
     }
 
-    pub fn read_injection_status(io: &Io, aux_mutex: &Mutex, linkno: u8,
+    pub fn read_injection_status(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
         destination: u8, channel: u16, overrd: u8) -> u8 {
-        let reply = drtio::aux_transact(io, aux_mutex, linkno, 
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
             &drtioaux::Packet::InjectionStatusRequest {
                 destination: destination,
                 channel: channel,
@@ -99,7 +106,7 @@ mod remote_moninj {
 
 #[cfg(has_drtio)]
 macro_rules! dispatch {
-    ($io:ident, $aux_mutex:ident, $routing_table:ident, $channel:expr, $func:ident $(, $param:expr)*) => {{
+    ($io:ident, $aux_mutex:ident, $ddma_mutex:ident, $subkernel_mutex:ident, $routing_table:ident, $channel:expr, $func:ident $(, $param:expr)*) => {{
         let destination = ($channel >> 16) as u8;
         let channel = $channel as u16;
         let hop = $routing_table.0[destination as usize][0];
@@ -107,21 +114,21 @@ macro_rules! dispatch {
             local_moninj::$func(channel, $($param, )*)
         } else {
             let linkno = hop - 1;
-            remote_moninj::$func($io, $aux_mutex, linkno, destination, channel, $($param, )*)
+            remote_moninj::$func($io, $aux_mutex, $ddma_mutex, $subkernel_mutex, $routing_table, linkno, destination, channel, $($param, )*)
         }
     }}
 }
 
 #[cfg(not(has_drtio))]
 macro_rules! dispatch {
-    ($io:ident, $aux_mutex:ident, $routing_table:ident, $channel:expr, $func:ident $(, $param:expr)*) => {{
+    ($io:ident, $aux_mutex:ident, $ddma_mutex:ident, $subkernel_mutex:ident, $routing_table:ident, $channel:expr, $func:ident $(, $param:expr)*) => {{
         let channel = $channel as u16;
         local_moninj::$func(channel, $($param, )*)
     }}
 }
 
-fn connection_worker(io: &Io, _aux_mutex: &Mutex, _routing_table: &drtio_routing::RoutingTable,
-    mut stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+fn connection_worker(io: &Io, _aux_mutex: &Mutex, _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex,
+    _routing_table: &drtio_routing::RoutingTable, mut stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
     let mut probe_watch_list = BTreeMap::new();
     let mut inject_watch_list = BTreeMap::new();
     let mut next_check = 0;
@@ -150,9 +157,9 @@ fn connection_worker(io: &Io, _aux_mutex: &Mutex, _routing_table: &drtio_routing
                     }
                 },
                 HostMessage::Inject { channel, overrd, value } => dispatch!(
-                    io, _aux_mutex, _routing_table, channel, inject, overrd, value),
+                    io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, channel, inject, overrd, value),
                 HostMessage::GetInjectionStatus { channel, overrd } => {
-                    let value = dispatch!(io, _aux_mutex, _routing_table, channel, read_injection_status, overrd);
+                    let value = dispatch!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, channel, read_injection_status, overrd);
                     let reply = DeviceMessage::InjectionStatus {
                         channel: channel,
                         overrd: overrd,
@@ -169,7 +176,7 @@ fn connection_worker(io: &Io, _aux_mutex: &Mutex, _routing_table: &drtio_routing
 
         if clock::get_ms() > next_check {
             for (&(channel, probe), previous) in probe_watch_list.iter_mut() {
-                let current = dispatch!(io, _aux_mutex, _routing_table, channel, read_probe, probe);
+                let current = dispatch!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, channel, read_probe, probe);
                 if previous.is_none() || previous.unwrap() != current {
                     let message = DeviceMessage::MonitorStatus {
                         channel: channel,
@@ -184,7 +191,7 @@ fn connection_worker(io: &Io, _aux_mutex: &Mutex, _routing_table: &drtio_routing
                 }
             }
             for (&(channel, overrd), previous) in inject_watch_list.iter_mut() {
-                let current = dispatch!(io, _aux_mutex, _routing_table, channel, read_injection_status, overrd);
+                let current = dispatch!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, channel, read_injection_status, overrd);
                 if previous.is_none() || previous.unwrap() != current {
                     let message = DeviceMessage::InjectionStatus {
                         channel: channel,
@@ -205,18 +212,20 @@ fn connection_worker(io: &Io, _aux_mutex: &Mutex, _routing_table: &drtio_routing
     }
 }
 
-pub fn thread(io: Io, aux_mutex: &Mutex, routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>) {
+pub fn thread(io: Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>) {
     let listener = TcpListener::new(&io, 2047);
     listener.listen(1383).expect("moninj: cannot listen");
 
     loop {
         let aux_mutex = aux_mutex.clone();
+        let ddma_mutex = ddma_mutex.clone();
+        let subkernel_mutex = subkernel_mutex.clone();
         let routing_table = routing_table.clone();
         let stream = listener.accept().expect("moninj: cannot accept").into_handle();
         io.spawn(16384, move |io| {
             let routing_table = routing_table.borrow();
             let mut stream = TcpStream::from_handle(&io, stream);
-            match connection_worker(&io, &aux_mutex, &routing_table, &mut stream) {
+            match connection_worker(&io, &aux_mutex, &ddma_mutex, &subkernel_mutex, &routing_table, &mut stream) {
                 Ok(()) => {},
                 Err(err) => error!("moninj aborted: {}", err)
             }

artiq/firmware/runtime/rtio_clocking.rs

@@ -1,8 +1,11 @@
 use board_misoc::config;
+#[cfg(has_si5324)]
 use board_artiq::si5324;
+#[cfg(has_si549)]
+use board_artiq::si549;
 use board_misoc::{csr, clock};
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Copy, Clone)]
 #[allow(non_camel_case_types)]
 pub enum RtioClock {
     Default,
@@ -89,13 +92,14 @@ pub mod crg {
 
 // Si5324 input to select for locking to an external clock (as opposed to
 // a recovered link clock in DRTIO satellites, which is handled elsewhere).
-#[cfg(all(soc_platform = "kasli", hw_rev = "v2.0"))]
+#[cfg(all(has_si5324, soc_platform = "kasli", hw_rev = "v2.0"))]
 const SI5324_EXT_INPUT: si5324::Input = si5324::Input::Ckin1;
-#[cfg(all(soc_platform = "kasli", not(hw_rev = "v2.0")))]
+#[cfg(all(has_si5324, soc_platform = "kasli", not(hw_rev = "v2.0")))]
 const SI5324_EXT_INPUT: si5324::Input = si5324::Input::Ckin2;
-#[cfg(all(soc_platform = "kc705"))]
+#[cfg(all(has_si5324, soc_platform = "kc705"))]
 const SI5324_EXT_INPUT: si5324::Input = si5324::Input::Ckin2;
 
+#[cfg(has_si5324)]
 fn setup_si5324_pll(cfg: RtioClock) {
     let (si5324_settings, si5324_ref_input) = match cfg {
         RtioClock::Ext0_Synth0_10to125 => { // 125 MHz output from 10 MHz CLKINx reference, 504 Hz BW
@@ -214,7 +218,7 @@ fn setup_si5324_pll(cfg: RtioClock) {
     si5324::setup(&si5324_settings, si5324_ref_input).expect("cannot initialize Si5324");
 }
 
-fn setup_si5324(clock_cfg: RtioClock) {
+fn sysclk_setup(clock_cfg: RtioClock) {
     let switched = unsafe {
         csr::crg::switch_done_read()
     };
@@ -222,6 +226,8 @@ fn setup_si5324(clock_cfg: RtioClock) {
         info!("Clocking has already been set up.");
         return;
     }
+
+    #[cfg(has_si5324)]
     match clock_cfg {
         RtioClock::Ext0_Bypass => {
             info!("using external RTIO clock with PLL bypass");
@@ -230,7 +236,10 @@ fn setup_si5324(clock_cfg: RtioClock) {
         _ => setup_si5324_pll(clock_cfg),
     }
 
-    // switch sysclk source to si5324
+    #[cfg(has_si549)]
+    si549::main_setup(&get_si549_setting(clock_cfg)).expect("cannot initialize main Si549");
+
+    // switch sysclk source
     #[cfg(not(has_drtio))]
     {
         info!("Switching sys clock, rebooting...");
@@ -244,9 +253,153 @@ fn setup_si5324(clock_cfg: RtioClock) {
 }
 
 
+#[cfg(all(has_si549, has_wrpll))]
+fn wrpll_setup(clk: RtioClock, si549_settings: &si549::FrequencySetting) {
+    // register values are directly copied from preconfigured mmcm
+    let (mmcm_setting, mmcm_bypass) = match clk {
+        RtioClock::Ext0_Synth0_10to125 => (
+            si549::wrpll_refclk::MmcmSetting {
+                // CLKFBOUT_MULT = 62.5, DIVCLK_DIVIDE = 1 , CLKOUT0_DIVIDE = 5
+                clkout0_reg1: 0x1083,
+                clkout0_reg2: 0x0080,
+                clkfbout_reg1: 0x179e,
+                clkfbout_reg2: 0x4c00,
+                div_reg: 0x1041,
+                lock_reg1: 0x00fa,
+                lock_reg2: 0x7c01,
+                lock_reg3: 0xffe9,
+                power_reg: 0x9900,
+                filt_reg1: 0x1008,
+                filt_reg2: 0x8800,
+            },
+            false,
+        ),
+        RtioClock::Ext0_Synth0_80to125 => (
+            si549::wrpll_refclk::MmcmSetting {
+                // CLKFBOUT_MULT = 15.625, DIVCLK_DIVIDE = 1 , CLKOUT0_DIVIDE = 10
+                clkout0_reg1: 0x1145,
+                clkout0_reg2: 0x0000,
+                clkfbout_reg1: 0x11c7,
+                clkfbout_reg2: 0x5880,
+                div_reg: 0x1041,
+                lock_reg1: 0x028a,
+                lock_reg2: 0x7c01,
+                lock_reg3: 0xffe9,
+                power_reg: 0x9900,
+                filt_reg1: 0x9908,
+                filt_reg2: 0x8100,
+            },
+            false,
+        ),
+        RtioClock::Ext0_Synth0_100to125 => (
+            si549::wrpll_refclk::MmcmSetting {
+                // CLKFBOUT_MULT = 12.5, DIVCLK_DIVIDE = 1 , CLKOUT0_DIVIDE = 10
+                clkout0_reg1: 0x1145,
+                clkout0_reg2: 0x0000,
+                clkfbout_reg1: 0x1145,
+                clkfbout_reg2: 0x4c00,
+                div_reg: 0x1041,
+                lock_reg1: 0x0339,
+                lock_reg2: 0x7c01,
+                lock_reg3: 0xffe9,
+                power_reg: 0x9900,
+                filt_reg1: 0x9108,
+                filt_reg2: 0x0100,
+            },
+            false,
+        ),
+        RtioClock::Ext0_Synth0_125to125 => (
+            si549::wrpll_refclk::MmcmSetting {
+                // CLKFBOUT_MULT = 10, DIVCLK_DIVIDE = 1 , CLKOUT0_DIVIDE = 10
+                clkout0_reg1: 0x1145,
+                clkout0_reg2: 0x0000,
+                clkfbout_reg1: 0x1145,
+                clkfbout_reg2: 0x0000,
+                div_reg: 0x1041,
+                lock_reg1: 0x03e8,
+                lock_reg2: 0x7001,
+                lock_reg3: 0xf3e9,
+                power_reg: 0x0100,
+                filt_reg1: 0x9908,
+                filt_reg2: 0x1100,
+            },
+            true,
+        ),
+        _ => unreachable!(),
+    };
+
+    si549::helper_setup(&si549_settings).expect("cannot initialize helper Si549");
+    si549::wrpll_refclk::setup(mmcm_setting, mmcm_bypass).expect("cannot initialize ref clk for wrpll");
+    si549::wrpll::select_recovered_clock(true);
+}
+
+#[cfg(has_si549)]
+fn get_si549_setting(clk: RtioClock) -> si549::FrequencySetting {
+    match clk {
+        RtioClock::Ext0_Synth0_10to125 => {
+            info!("using 10MHz reference to make 125MHz RTIO clock with WRPLL");
+        }
+        RtioClock::Ext0_Synth0_80to125 => {
+            info!("using 80MHz reference to make 125MHz RTIO clock with WRPLL");
+        }
+        RtioClock::Ext0_Synth0_100to125 => {
+            info!("using 100MHz reference to make 125MHz RTIO clock with WRPLL");
+        }
+        RtioClock::Ext0_Synth0_125to125 => {
+            info!("using 125MHz reference to make 125MHz RTIO clock with WRPLL");
+        }
+        RtioClock::Int_100 => {
+            info!("using internal 100MHz RTIO clock");
+        }
+        RtioClock::Int_125 => {
+            info!("using internal 125MHz RTIO clock");
+        }
+        _ => {
+            warn!(
+                "rtio_clock setting '{:?}' is unsupported. Falling back to default internal 125MHz RTIO clock.",
+                clk
+            );
+        }
+    };
+
+    match clk {
+        RtioClock::Int_100 => {
+            si549::FrequencySetting {
+                main: si549::DividerConfig {
+                    hsdiv: 0x06C,
+                    lsdiv: 0,
+                    fbdiv: 0x046C5F49797,
+                },
+                helper: si549::DividerConfig {
+                    // 100MHz*32767/32768
+                    hsdiv: 0x06C,
+                    lsdiv: 0,
+                    fbdiv: 0x046C5670BBD,
+                },
+            }
+        }
+        _ => {
+            // Everything else use 125MHz
+            si549::FrequencySetting {
+                main: si549::DividerConfig {
+                    hsdiv: 0x058,
+                    lsdiv: 0,
+                    fbdiv: 0x04815791F25,
+                },
+                helper: si549::DividerConfig {
+                    // 125MHz*32767/32768
+                    hsdiv: 0x058,
+                    lsdiv: 0,
+                    fbdiv: 0x04814E8F442,
+                },
+            }
+        }
+    }
+}
+
 pub fn init() {
     let clock_cfg = get_rtio_clock_cfg();
-    setup_si5324(clock_cfg);
+    sysclk_setup(clock_cfg);
 
     #[cfg(has_drtio)]
     {
@@ -255,7 +408,7 @@ pub fn init() {
         };
         if switched == 0 {
             info!("Switching sys clock, rebooting...");
-            clock::spin_us(500); // delay for clean UART log
+            clock::spin_us(3000); // delay for clean UART log
             unsafe {
                 // clock switch and reboot will begin after TX is initialized
                 // and TX will be initialized after this
@@ -282,4 +435,18 @@ pub fn init() {
             error!("RTIO clock failed");
         }
     }
+
+    #[cfg(all(has_si549, has_wrpll))]
+    {
+        // SYS CLK switch will reset CSRs that are used by WRPLL
+        match clock_cfg {
+            RtioClock::Ext0_Synth0_10to125
+            | RtioClock::Ext0_Synth0_80to125
+            | RtioClock::Ext0_Synth0_100to125
+            | RtioClock::Ext0_Synth0_125to125 => {
+                wrpll_setup(clock_cfg, &get_si549_setting(clock_cfg));
+            }
+            _ => {}
+        }
+    }
 }

artiq/firmware/runtime/rtio_dma.rs

@@ -1,6 +1,6 @@
 use core::mem;
 use alloc::{vec::Vec, string::String, collections::btree_map::BTreeMap};
-use sched::{Io, Mutex};
+use sched::{Io, Mutex, Error as SchedError};
 
 const ALIGNMENT: usize = 64;
 
@@ -39,19 +39,48 @@ pub mod remote_dma {
         }
     }
 
+    #[derive(Fail, Debug)]
+    pub enum Error {
+        #[fail(display = "Timed out waiting for DMA results")]
+        Timeout,
+        #[fail(display = "DDMA trace is in incorrect state for the given operation")]
+        IncorrectState,
+        #[fail(display = "scheduler error: {}", _0)]
+        SchedError(#[cause] SchedError),
+        #[fail(display = "DRTIO error: {}", _0)]
+        DrtioError(#[cause] drtio::Error),
+    }
+
+    impl From<drtio::Error> for Error {
+        fn from(value: drtio::Error) -> Error {
+            match value {
+                drtio::Error::SchedError(x) => Error::SchedError(x),
+                x => Error::DrtioError(x),
+            }
+        }
+    }
+
+    impl From<SchedError> for Error {
+        fn from(value: SchedError) -> Error {
+                Error::SchedError(value)
+        }
+    }
+
     // remote traces map. ID -> destination, trace pair
     static mut TRACES: BTreeMap<u32, BTreeMap<u8, RemoteTrace>> = BTreeMap::new();
 
-    pub fn add_traces(io: &Io, ddma_mutex: &Mutex, id: u32, traces: BTreeMap<u8, Vec<u8>>) {
-        let _lock = ddma_mutex.lock(io);
+    pub fn add_traces(io: &Io, ddma_mutex: &Mutex, id: u32, traces: BTreeMap<u8, Vec<u8>>
+    ) -> Result<(), SchedError> {
+        let _lock = ddma_mutex.lock(io)?;
         let mut trace_map: BTreeMap<u8, RemoteTrace> = BTreeMap::new();
         for (destination, trace) in traces {
             trace_map.insert(destination, trace.into());
         }
         unsafe { TRACES.insert(id, trace_map); }
+        Ok(())
     }
 
-    pub fn await_done(io: &Io, ddma_mutex: &Mutex, id: u32, timeout: u64) -> Result<RemoteState, &'static str> {
+    pub fn await_done(io: &Io, ddma_mutex: &Mutex, id: u32, timeout: u64) -> Result<RemoteState, Error> {
         let max_time = clock::get_ms() + timeout as u64;
         io.until(|| {
             if clock::get_ms() > max_time {
@@ -70,15 +99,15 @@ pub mod remote_dma {
                 }
             }
             true
-        }).unwrap();
+        })?;
         if clock::get_ms() > max_time {
             error!("Remote DMA await done timed out");
-            return Err("Timed out waiting for results.");
+            return Err(Error::Timeout);
         }
         // clear the internal state, and if there have been any errors, return one of them
         let mut playback_state: RemoteState = RemoteState::PlaybackEnded { error: 0, channel: 0, timestamp: 0 };
         {
-            let _lock = ddma_mutex.lock(io).unwrap();
+            let _lock = ddma_mutex.lock(io)?;
             let traces = unsafe { TRACES.get_mut(&id).unwrap() };
             for (_dest, trace) in traces {
                 match trace.state {
@@ -91,60 +120,57 @@ pub mod remote_dma {
         Ok(playback_state)
     }
 
-    pub fn erase(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex,
-            routing_table: &RoutingTable, id: u32) {
-        let _lock = ddma_mutex.lock(io).unwrap();
+    pub fn erase(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &RoutingTable, id: u32) -> Result<(), Error> {
+        let _lock = ddma_mutex.lock(io)?;
         let destinations = unsafe { TRACES.get(&id).unwrap() };
         for destination in destinations.keys() {
-            match drtio::ddma_send_erase(io, aux_mutex, routing_table, id, *destination) {
+            match drtio::ddma_send_erase(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, *destination) {
                 Ok(_) => (),
                 Err(e) => error!("Error erasing trace on DMA: {}", e)
             } 
         }
         unsafe { TRACES.remove(&id); }
+        Ok(())
     }
 
-    pub fn upload_traces(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex,
-            routing_table: &RoutingTable, id: u32) {
-        let _lock = ddma_mutex.lock(io);
+    pub fn upload_traces(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &RoutingTable, id: u32) -> Result<(), Error> {
+        let _lock = ddma_mutex.lock(io)?;
         let traces = unsafe { TRACES.get_mut(&id).unwrap() };
         for (destination, mut trace) in traces {
-            match drtio::ddma_upload_trace(io, aux_mutex, routing_table, id, *destination, trace.get_trace())
-            {
-                Ok(_) => trace.state = RemoteState::Loaded,
-                Err(e) => error!("Error adding DMA trace on destination {}: {}", destination, e)
-            }
+            drtio::ddma_upload_trace(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, *destination, trace.get_trace())?;
+            trace.state = RemoteState::Loaded;
         }
+        Ok(())
     }
 
-    pub fn playback(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex,
-            routing_table: &RoutingTable, id: u32, timestamp: u64) {
+    pub fn playback(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &RoutingTable, id: u32, timestamp: u64) -> Result<(), Error>{
         // triggers playback on satellites
         let destinations = unsafe { 
-            let _lock = ddma_mutex.lock(io).unwrap();
+            let _lock = ddma_mutex.lock(io)?;
             TRACES.get(&id).unwrap() };
         for (destination, trace) in destinations {
             {
                 // need to drop the lock before sending the playback request to avoid a deadlock
                 // if a PlaybackStatus is returned from another satellite in the meanwhile.
-                let _lock = ddma_mutex.lock(io).unwrap();
+                let _lock = ddma_mutex.lock(io)?;
                 if trace.state != RemoteState::Loaded {
                     error!("Destination {} not ready for DMA, state: {:?}", *destination, trace.state);
-                    continue;
+                    return Err(Error::IncorrectState);
                 }
             }
-            match drtio::ddma_send_playback(io, aux_mutex, routing_table, id, *destination, timestamp) {
-                Ok(_) => (),
-                Err(e) => error!("Error during remote DMA playback: {}", e)
-            }
+            drtio::ddma_send_playback(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, *destination, timestamp)?;
         }
+        Ok(())
     }
 
     pub fn playback_done(io: &Io, ddma_mutex: &Mutex, 
-            id: u32, destination: u8, error: u8, channel: u32, timestamp: u64) {
+            id: u32, source: u8, error: u8, channel: u32, timestamp: u64) {
         // called upon receiving PlaybackDone aux packet
         let _lock = ddma_mutex.lock(io).unwrap();
-        let mut trace = unsafe { TRACES.get_mut(&id).unwrap().get_mut(&destination).unwrap() };
+        let mut trace = unsafe { TRACES.get_mut(&id).unwrap().get_mut(&source).unwrap() };
         trace.state = RemoteState::PlaybackEnded {
             error: error, 
             channel: channel, 
@@ -152,7 +178,7 @@ pub mod remote_dma {
         };
     }
 
-    pub fn destination_changed(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex,
+    pub fn destination_changed(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
         routing_table: &RoutingTable, destination: u8, up: bool) {
         // update state of the destination, resend traces if it's up
         let _lock = ddma_mutex.lock(io).unwrap();
@@ -160,7 +186,7 @@ pub mod remote_dma {
         for (id, dest_traces) in traces_iter {
             if let Some(trace) = dest_traces.get_mut(&destination) {
                 if up {
-                    match drtio::ddma_upload_trace(io, aux_mutex, routing_table, *id, destination, trace.get_trace())
+                    match drtio::ddma_upload_trace(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, *id, destination, trace.get_trace())
                     {
                         Ok(_) => trace.state = RemoteState::Loaded,
                         Err(e) => error!("Error adding DMA trace on destination {}: {}", destination, e)
@@ -172,10 +198,10 @@ pub mod remote_dma {
         }
     }
 
-    pub fn has_remote_traces(io: &Io, ddma_mutex: &Mutex, id: u32) -> bool {
-        let _lock = ddma_mutex.lock(io).unwrap();
+    pub fn has_remote_traces(io: &Io, ddma_mutex: &Mutex, id: u32) -> Result<bool, Error> {
+        let _lock = ddma_mutex.lock(io)?;
         let trace_list = unsafe { TRACES.get(&id).unwrap() };
-        !trace_list.is_empty()
+        Ok(!trace_list.is_empty())
     }
 
 }
@@ -225,11 +251,11 @@ impl Manager {
     }
 
     pub fn record_stop(&mut self, duration: u64, _enable_ddma: bool,
-            _io: &Io, _ddma_mutex: &Mutex) -> u32 {
+            _io: &Io, _ddma_mutex: &Mutex) -> Result<u32, SchedError> {
         let mut local_trace = Vec::new();
         let mut _remote_traces: BTreeMap<u8, Vec<u8>> = BTreeMap::new();
 
-        if _enable_ddma & cfg!(has_drtio) {
+        if _enable_ddma && cfg!(has_drtio) {
             let mut trace = Vec::new();
             mem::swap(&mut self.recording_trace, &mut trace);
             trace.push(0);
@@ -284,9 +310,9 @@ impl Manager {
         self.name_map.insert(name, id);
 
         #[cfg(has_drtio)]
-        remote_dma::add_traces(_io, _ddma_mutex, id, _remote_traces);
+        remote_dma::add_traces(_io, _ddma_mutex, id, _remote_traces)?;
 
-        id
+        Ok(id)
     }
 
     pub fn erase(&mut self, name: &str) {

artiq/firmware/runtime/rtio_mgt.rs

@@ -17,22 +17,57 @@ pub mod drtio {
     use super::*;
     use alloc::vec::Vec;
     use drtioaux;
-    use proto_artiq::drtioaux_proto::DMA_TRACE_MAX_SIZE;
+    use proto_artiq::drtioaux_proto::{MASTER_PAYLOAD_MAX_SIZE, PayloadStatus};
     use rtio_dma::remote_dma;
     #[cfg(has_rtio_analyzer)]
     use analyzer::remote_analyzer::RemoteBuffer;
+    use kernel::subkernel;
+    use sched::Error as SchedError;
+
+    #[derive(Fail, Debug)]
+    pub enum Error {
+        #[fail(display = "timed out")]
+        Timeout,
+        #[fail(display = "unexpected packet: {:?}", _0)]
+        UnexpectedPacket(drtioaux::Packet),
+        #[fail(display = "aux packet error")]
+        AuxError,
+        #[fail(display = "link down")]
+        LinkDown,
+        #[fail(display = "unexpected reply")]
+        UnexpectedReply,
+        #[fail(display = "error adding DMA trace on satellite #{}", _0)]
+        DmaAddTraceFail(u8),
+        #[fail(display = "error erasing DMA trace on satellite #{}", _0)]
+        DmaEraseFail(u8),
+        #[fail(display = "error playing back DMA trace on satellite #{}", _0)]
+        DmaPlaybackFail(u8),
+        #[fail(display = "error adding subkernel on satellite #{}", _0)]
+        SubkernelAddFail(u8),
+        #[fail(display = "error on subkernel run request on satellite #{}", _0)]
+        SubkernelRunFail(u8),
+        #[fail(display = "sched error: {}", _0)]
+        SchedError(#[cause] SchedError),
+    }
+
+    impl From<SchedError> for Error {
+        fn from(value: SchedError) -> Error {
+            Error::SchedError(value)
+        }
+    }
 
     pub fn startup(io: &Io, aux_mutex: &Mutex,
             routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>,
             up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            ddma_mutex: &Mutex) {
+            ddma_mutex: &Mutex, subkernel_mutex: &Mutex) {
         let aux_mutex = aux_mutex.clone();
         let routing_table = routing_table.clone();
         let up_destinations = up_destinations.clone();
         let ddma_mutex = ddma_mutex.clone();
-        io.spawn(8192, move |io| {
+        let subkernel_mutex = subkernel_mutex.clone();
+        io.spawn(16384, move |io| {
             let routing_table = routing_table.borrow();
-            link_thread(io, &aux_mutex, &routing_table, &up_destinations, &ddma_mutex);
+            link_thread(io, &aux_mutex, &routing_table, &up_destinations, &ddma_mutex, &subkernel_mutex);
         });
     }
 
@@ -43,42 +78,104 @@ pub mod drtio {
         }
     }
 
-    fn recv_aux_timeout(io: &Io, linkno: u8, timeout: u32) -> Result<drtioaux::Packet, &'static str> {
+    fn recv_aux_timeout(io: &Io, linkno: u8, timeout: u32) -> Result<drtioaux::Packet, Error> {
         let max_time = clock::get_ms() + timeout as u64;
         loop {
             if !link_rx_up(linkno) {
-                return Err("link went down");
+                return Err(Error::LinkDown);
             }
             if clock::get_ms() > max_time {
-                return Err("timeout");
+                return Err(Error::Timeout);
             }
             match drtioaux::recv(linkno) {
                 Ok(Some(packet)) => return Ok(packet),
                 Ok(None) => (),
-                Err(_) => return Err("aux packet error")
+                Err(_) => return Err(Error::AuxError)
             }
-            io.relinquish().unwrap();
+            io.relinquish()?;
         }
     }
 
-    fn process_async_packets(io: &Io, ddma_mutex: &Mutex, packet: drtioaux::Packet
-    ) -> Option<drtioaux::Packet> {
-        // returns None if an async packet has been consumed
+    fn process_async_packets(io: &Io, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+            routing_table: &drtio_routing::RoutingTable, linkno: u8, packet: &drtioaux::Packet
+    ) -> bool {
         match packet {
-            drtioaux::Packet::DmaPlaybackStatus { id, destination, error, channel, timestamp } => {
-                remote_dma::playback_done(io, ddma_mutex, id, destination, error, channel, timestamp);
-                None
+            // packets to be consumed locally
+            drtioaux::Packet::DmaPlaybackStatus { id, source, destination: 0, error, channel, timestamp } => {
+                remote_dma::playback_done(io, ddma_mutex, *id, *source, *error, *channel, *timestamp);
+                true
             },
-            other => Some(other)
+            drtioaux::Packet::SubkernelFinished { id, destination: 0, with_exception, exception_src } => {
+                subkernel::subkernel_finished(io, subkernel_mutex, *id, *with_exception, *exception_src);
+                true
+            },
+            drtioaux::Packet::SubkernelMessage { id, source: from, destination: 0, status, length, data } => {
+                subkernel::message_handle_incoming(io, subkernel_mutex, *id, *status, *length as usize, data);
+                // acknowledge receiving part of the message
+                drtioaux::send(linkno, 
+                    &drtioaux::Packet::SubkernelMessageAck { destination: *from }
+                ).unwrap();
+                true
+            },
+            // (potentially) routable packets
+            drtioaux::Packet::DmaAddTraceRequest      { destination, .. } |
+                drtioaux::Packet::DmaAddTraceReply        { destination, .. } |
+                drtioaux::Packet::DmaRemoveTraceRequest   { destination, .. } |
+                drtioaux::Packet::DmaRemoveTraceReply     { destination, .. } |
+                drtioaux::Packet::DmaPlaybackRequest      { destination, .. } |
+                drtioaux::Packet::DmaPlaybackReply        { destination, .. } |
+                drtioaux::Packet::SubkernelLoadRunRequest { destination, .. } |
+                drtioaux::Packet::SubkernelLoadRunReply   { destination, .. } |
+                drtioaux::Packet::SubkernelMessage        { destination, .. } |
+                drtioaux::Packet::SubkernelMessageAck     { destination, .. } |
+                drtioaux::Packet::DmaPlaybackStatus       { destination, .. } |
+                drtioaux::Packet::SubkernelFinished       { destination, .. } => {
+                if *destination == 0 {
+                    false
+                } else {
+                    let dest_link = routing_table.0[*destination as usize][0] - 1;
+                    if dest_link == linkno {
+                        warn!("[LINK#{}] Re-routed packet would return to the same link, dropping: {:?}", linkno, packet);
+                    } else {
+                        drtioaux::send(dest_link, &packet).unwrap();
+                    }
+                    true
+                }
+            }
+            _ => false
         }
     }
 
-    pub fn aux_transact(io: &Io, aux_mutex: &Mutex, linkno: u8, request: &drtioaux::Packet
-    ) -> Result<drtioaux::Packet, &'static str> {
-        let _lock = aux_mutex.lock(io).unwrap();
+    pub fn aux_transact(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &drtio_routing::RoutingTable, linkno: u8, request: &drtioaux::Packet
+    ) -> Result<drtioaux::Packet, Error> {
+        let _lock = aux_mutex.lock(io)?;
         drtioaux::send(linkno, request).unwrap();
-        let reply = recv_aux_timeout(io, linkno, 200)?;
-        Ok(reply)
+        loop {
+            let reply = recv_aux_timeout(io, linkno, 200)?;
+            if !process_async_packets(io, ddma_mutex, subkernel_mutex, routing_table, linkno, &reply) {
+                // returns none if it was an async packet
+                return Ok(reply);
+            }
+        }
+    }
+
+    fn setup_transact(io: &Io, aux_mutex: &Mutex, linkno: u8, request: &drtioaux::Packet) -> Result<drtioaux::Packet, Error> {
+        /* shorter aux_transact for setup purposes, no checking for async packets,
+           as they should not be generated yet */
+        let _lock = aux_mutex.lock(io)?;
+        drtioaux::send(linkno, request).unwrap();
+        recv_aux_timeout(io, linkno, 200)
+    }
+
+    pub fn clear_buffers(io: &Io, aux_mutex: &Mutex) {
+        let _lock = aux_mutex.lock(io).unwrap();
+        for linkno in 0..(csr::DRTIO.len() as u8) {
+            if !link_rx_up(linkno) {
+                continue;
+            }
+            let _ = recv_aux_timeout(io, linkno, 200);
+        }
     }
 
     fn ping_remote(io: &Io, aux_mutex: &Mutex, linkno: u8) -> u32 {
@@ -91,7 +188,7 @@ pub mod drtio {
             if count > 100 {
                 return 0;
             }
-            let reply = aux_transact(io, aux_mutex, linkno, &drtioaux::Packet::EchoRequest);
+            let reply = setup_transact(io, aux_mutex, linkno, &drtioaux::Packet::EchoRequest);
             match reply {
                 Ok(drtioaux::Packet::EchoReply) => {
                     // make sure receive buffer is drained
@@ -110,7 +207,7 @@ pub mod drtio {
         }
     }
 
-    fn sync_tsc(io: &Io, aux_mutex: &Mutex, linkno: u8) -> Result<(), &'static str> {
+    fn sync_tsc(io: &Io, aux_mutex: &Mutex, linkno: u8) -> Result<(), Error> {
         let _lock = aux_mutex.lock(io).unwrap();
 
         unsafe {
@@ -123,32 +220,32 @@ pub mod drtio {
         if reply == drtioaux::Packet::TSCAck {
             return Ok(());
         } else {
-            return Err("unexpected reply");
+            return Err(Error::UnexpectedReply);
         }
     }
 
     fn load_routing_table(io: &Io, aux_mutex: &Mutex,
-        linkno: u8, routing_table: &drtio_routing::RoutingTable) -> Result<(), &'static str> {
+        linkno: u8, routing_table: &drtio_routing::RoutingTable) -> Result<(), Error> {
         for i in 0..drtio_routing::DEST_COUNT {
-            let reply = aux_transact(io, aux_mutex, linkno, &drtioaux::Packet::RoutingSetPath {
+            let reply = setup_transact(io, aux_mutex, linkno, &drtioaux::Packet::RoutingSetPath {
                 destination: i as u8,
                 hops: routing_table.0[i]
             })?;
             if reply != drtioaux::Packet::RoutingAck {
-                return Err("unexpected reply");
+                return Err(Error::UnexpectedReply);
             }
         }
         Ok(())
     }
 
     fn set_rank(io: &Io, aux_mutex: &Mutex,
-        linkno: u8, rank: u8) -> Result<(), &'static str> {
-        let reply = aux_transact(io, aux_mutex, linkno,
+        linkno: u8, rank: u8) -> Result<(), Error> {
+        let reply = setup_transact(io, aux_mutex, linkno,
             &drtioaux::Packet::RoutingSetRank {
                 rank: rank
             })?;
         if reply != drtioaux::Packet::RoutingAck {
-            return Err("unexpected reply");
+            return Err(Error::UnexpectedReply);
         }
         Ok(())
     }
@@ -166,15 +263,19 @@ pub mod drtio {
         }
     }
 
-    fn process_unsolicited_aux(io: &Io, aux_mutex: &Mutex, linkno: u8, ddma_mutex: &Mutex) {
+    fn process_unsolicited_aux(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8) {
         let _lock = aux_mutex.lock(io).unwrap();
-        match drtioaux::recv(linkno) {
-            Ok(Some(drtioaux::Packet::DmaPlaybackStatus { id, destination, error, channel, timestamp })) => {
-                remote_dma::playback_done(io, ddma_mutex, id, destination, error, channel, timestamp);
+        loop {
+            match drtioaux::recv(linkno) {
+                Ok(Some(packet)) => {
+                    if !process_async_packets(&io, ddma_mutex, subkernel_mutex, routing_table, linkno, &packet) {
+                        warn!("[LINK#{}] unsolicited aux packet: {:?}", linkno, packet);
+                    }
+                },
+                Ok(None) => return,
+                Err(_) => { warn!("[LINK#{}] aux packet error", linkno); return }
             }
-            Ok(Some(packet)) => warn!("[LINK#{}] unsolicited aux packet: {:?}", linkno, packet),
-            Ok(None) => (),
-            Err(_) => warn!("[LINK#{}] aux packet error", linkno)
         }
     }
 
@@ -221,7 +322,7 @@ pub mod drtio {
     fn destination_survey(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
             up_links: &[bool],
             up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            ddma_mutex: &Mutex) {
+            ddma_mutex: &Mutex, subkernel_mutex: &Mutex) {
         for destination in 0..drtio_routing::DEST_COUNT {
             let hop = routing_table.0[destination][0];
             let destination = destination as u8;
@@ -235,51 +336,46 @@ pub mod drtio {
                 let linkno = hop - 1;
                 if destination_up(up_destinations, destination) {
                     if up_links[linkno as usize] {
-                        loop {
-                            let reply = aux_transact(io, aux_mutex, linkno, 
-                                &drtioaux::Packet::DestinationStatusRequest {
-                                    destination: destination
-                                });
-                            if let Ok(reply) = reply {
-                                let reply = process_async_packets(io, ddma_mutex, reply);
-                                match reply {
-                                    Some(drtioaux::Packet::DestinationDownReply) => {
-                                        destination_set_up(routing_table, up_destinations, destination, false);
-                                        remote_dma::destination_changed(io, aux_mutex, ddma_mutex, routing_table, destination, false);
-                                    }
-                                    Some(drtioaux::Packet::DestinationOkReply) => (),
-                                    Some(drtioaux::Packet::DestinationSequenceErrorReply { channel }) => {
-                                        error!("[DEST#{}] RTIO sequence error involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
-                                        unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_SEQUENCE_ERROR };
-                                    }
-                                    Some(drtioaux::Packet::DestinationCollisionReply { channel }) => {
-                                        error!("[DEST#{}] RTIO collision involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
-                                        unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_COLLISION };
-                                    }
-                                    Some(drtioaux::Packet::DestinationBusyReply { channel }) => {
-                                        error!("[DEST#{}] RTIO busy error involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
-                                        unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_BUSY };
-                                    }
-                                    Some(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
-                                    None => { 
-                                        // continue asking until we get Destination...Reply or error out
-                                        // wait a bit not to overwhelm the receiver causing gateway errors
-                                        io.sleep(10).unwrap(); 
-                                        continue;
-                                    }
+                        let reply = aux_transact(io, aux_mutex,
+                             ddma_mutex, subkernel_mutex, routing_table, linkno,
+                            &drtioaux::Packet::DestinationStatusRequest {
+                                destination: destination
+                            });
+                        if let Ok(reply) = reply {
+                            match reply {
+                                drtioaux::Packet::DestinationDownReply => {
+                                    destination_set_up(routing_table, up_destinations, destination, false);
+                                    remote_dma::destination_changed(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, destination, false);
+                                    subkernel::destination_changed(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, destination, false);
                                 }
-                            } else { 
-                                error!("[DEST#{}] communication failed ({})", destination, reply.unwrap_err()); 
+                                drtioaux::Packet::DestinationOkReply => (),
+                                drtioaux::Packet::DestinationSequenceErrorReply { channel } => {
+                                    error!("[DEST#{}] RTIO sequence error involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
+                                    unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_SEQUENCE_ERROR };
+                                }
+                                drtioaux::Packet::DestinationCollisionReply { channel } => {
+                                    error!("[DEST#{}] RTIO collision involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
+                                    unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_COLLISION };
+                                }
+                                drtioaux::Packet::DestinationBusyReply { channel } => {
+                                    error!("[DEST#{}] RTIO busy error involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
+                                    unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_BUSY };
+                                }
+                                packet => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
+                                
                             }
-                            break;
+                        } else { 
+                            error!("[DEST#{}] communication failed ({:?})", destination, reply.unwrap_err()); 
                         }
                     } else {
                         destination_set_up(routing_table, up_destinations, destination, false);
-                        remote_dma::destination_changed(io, aux_mutex, ddma_mutex, routing_table, destination, false);
+                        remote_dma::destination_changed(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, destination, false);
+                        subkernel::destination_changed(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, destination, false);
                     }
                 } else {
                     if up_links[linkno as usize] {
-                        let reply = aux_transact(io, aux_mutex, linkno, 
+                        let reply = aux_transact(io, aux_mutex, ddma_mutex,
+                            subkernel_mutex, routing_table, linkno,
                             &drtioaux::Packet::DestinationStatusRequest {
                                 destination: destination
                             });
@@ -288,10 +384,11 @@ pub mod drtio {
                             Ok(drtioaux::Packet::DestinationOkReply) => {
                                 destination_set_up(routing_table, up_destinations, destination, true);
                                 init_buffer_space(destination as u8, linkno);
-                                remote_dma::destination_changed(io, aux_mutex, ddma_mutex, routing_table, destination, true);
+                                remote_dma::destination_changed(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, destination, true);
+                                subkernel::destination_changed(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, destination, true);
                             },
                             Ok(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
-                            Err(e) => error!("[DEST#{}] communication failed ({})", destination, e)
+                            Err(e) => error!("[DEST#{}] communication failed ({:?})", destination, e)
                         }
                     }
                 }
@@ -302,7 +399,7 @@ pub mod drtio {
     pub fn link_thread(io: Io, aux_mutex: &Mutex,
             routing_table: &drtio_routing::RoutingTable,
             up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            ddma_mutex: &Mutex) {
+            ddma_mutex: &Mutex, subkernel_mutex: &Mutex) {
         let mut up_links = [false; csr::DRTIO.len()];
         loop {
             for linkno in 0..csr::DRTIO.len() {
@@ -310,7 +407,7 @@ pub mod drtio {
                 if up_links[linkno as usize] {
                     /* link was previously up */
                     if link_rx_up(linkno) {
-                        process_unsolicited_aux(&io, aux_mutex, linkno, ddma_mutex);
+                        process_unsolicited_aux(&io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno);
                         process_local_errors(linkno);
                     } else {
                         info!("[LINK#{}] link is down", linkno);
@@ -325,13 +422,13 @@ pub mod drtio {
                             info!("[LINK#{}] remote replied after {} packets", linkno, ping_count);
                             up_links[linkno as usize] = true;
                             if let Err(e) = sync_tsc(&io, aux_mutex, linkno) {
-                                error!("[LINK#{}] failed to sync TSC ({})", linkno, e);
+                                error!("[LINK#{}] failed to sync TSC ({:?})", linkno, e);
                             }
                             if let Err(e) = load_routing_table(&io, aux_mutex, linkno, routing_table) {
-                                error!("[LINK#{}] failed to load routing table ({})", linkno, e);
+                                error!("[LINK#{}] failed to load routing table ({:?})", linkno, e);
                             }
                             if let Err(e) = set_rank(&io, aux_mutex, linkno, 1) {
-                                error!("[LINK#{}] failed to set rank ({})", linkno, e);
+                                error!("[LINK#{}] failed to set rank ({:?})", linkno, e);
                             }
                             info!("[LINK#{}] link initialization completed", linkno);
                         } else {
@@ -340,12 +437,12 @@ pub mod drtio {
                     }
                 }
             }
-            destination_survey(&io, aux_mutex, routing_table, &up_links, up_destinations, ddma_mutex);
+            destination_survey(&io, aux_mutex, routing_table, &up_links, up_destinations, ddma_mutex, subkernel_mutex);
             io.sleep(200).unwrap();
         }
     }
 
-    pub fn reset(io: &Io, aux_mutex: &Mutex) {
+    pub fn reset(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable) {
         for linkno in 0..csr::DRTIO.len() {
             unsafe {
                 (csr::DRTIO[linkno].reset_write)(1);
@@ -361,95 +458,98 @@ pub mod drtio {
         for linkno in 0..csr::DRTIO.len() {
             let linkno = linkno as u8;
             if link_rx_up(linkno) {
-                let reply = aux_transact(io, aux_mutex, linkno,
+                let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
                     &drtioaux::Packet::ResetRequest);
                 match reply {
                     Ok(drtioaux::Packet::ResetAck) => (),
                     Ok(_) => error!("[LINK#{}] reset failed, received unexpected aux packet", linkno),
-                    Err(e) => error!("[LINK#{}] reset failed, aux packet error ({})", linkno, e)
+                    Err(e) => error!("[LINK#{}] reset failed, aux packet error ({:?})", linkno, e)
                 }
             }
         }
     }
 
-    pub fn ddma_upload_trace(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
-            id: u32, destination: u8, trace: &Vec<u8>) -> Result<(), &'static str> {
-        let linkno = routing_table.0[destination as usize][0] - 1;
-        let mut i = 0;
-        while i < trace.len() {
-            let mut trace_slice: [u8; DMA_TRACE_MAX_SIZE] = [0; DMA_TRACE_MAX_SIZE];
-            let len: usize = if i + DMA_TRACE_MAX_SIZE < trace.len() { DMA_TRACE_MAX_SIZE } else { trace.len() - i } as usize;
-            let last = i + len == trace.len();
-            trace_slice[..len].clone_from_slice(&trace[i..i+len]);
-            i += len;
-            let reply = aux_transact(io, aux_mutex, linkno, 
-                &drtioaux::Packet::DmaAddTraceRequest {
-                    id: id, destination: destination, last: last, length: len as u16, trace: trace_slice});
-            match reply {
-                Ok(drtioaux::Packet::DmaAddTraceReply { succeeded: true }) => (),
-                Ok(drtioaux::Packet::DmaAddTraceReply { succeeded: false }) => { 
-                    return Err("error adding trace on satellite"); },
-                Ok(_) => { return Err("adding DMA trace failed, unexpected aux packet"); },
-                Err(_) => { return Err("adding DMA trace failed, aux error"); }
+    fn partition_data<F>(data: &[u8], send_f: F) -> Result<(), Error>
+            where F: Fn(&[u8; MASTER_PAYLOAD_MAX_SIZE], PayloadStatus, usize) -> Result<(), Error> {
+            let mut i = 0;
+            while i < data.len() {
+                let mut slice: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                let len: usize = if i + MASTER_PAYLOAD_MAX_SIZE < data.len() { MASTER_PAYLOAD_MAX_SIZE } else { data.len() - i } as usize;
+                let first = i == 0;
+                let last = i + len == data.len();
+                let status = PayloadStatus::from_status(first, last);
+                slice[..len].clone_from_slice(&data[i..i+len]);
+                i += len;
+                send_f(&slice, status, len)?;
             }
+            Ok(())
         }
-        Ok(())
+
+    pub fn ddma_upload_trace(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &drtio_routing::RoutingTable, id: u32, destination: u8, trace: &[u8]
+    ) -> Result<(), Error> {
+        let linkno = routing_table.0[destination as usize][0] - 1;
+        partition_data(trace, |slice, status, len: usize| {
+            let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+                &drtioaux::Packet::DmaAddTraceRequest {
+                    id: id, source: 0, destination: destination, status: status, length: len as u16, trace: *slice})?;
+            match reply {
+                drtioaux::Packet::DmaAddTraceReply { destination: 0, succeeded: true, .. } => Ok(()),
+                drtioaux::Packet::DmaAddTraceReply { destination: 0, succeeded: false, .. } => Err(Error::DmaAddTraceFail(destination)),
+                packet => Err(Error::UnexpectedPacket(packet)),
+            }
+        })
     }
 
-    pub fn ddma_send_erase(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable, 
-            id: u32, destination: u8) -> Result<(), &'static str> {
+    pub fn ddma_send_erase(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &drtio_routing::RoutingTable, id: u32, destination: u8) -> Result<(), Error> {
         let linkno = routing_table.0[destination as usize][0] - 1;
-        let reply = aux_transact(io, aux_mutex, linkno, 
-            &drtioaux::Packet::DmaRemoveTraceRequest { id: id, destination: destination });
+        let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+            &drtioaux::Packet::DmaRemoveTraceRequest { id: id, source: 0, destination: destination })?;
         match reply {
-            Ok(drtioaux::Packet::DmaRemoveTraceReply { succeeded: true }) => Ok(()),
-            Ok(drtioaux::Packet::DmaRemoveTraceReply { succeeded: false }) => Err("satellite DMA erase error"),
-            Ok(_) => Err("erasing trace failed, unexpected aux packet"),
-            Err(_) => Err("erasing trace failed, aux error")
+            drtioaux::Packet::DmaRemoveTraceReply { destination: 0, succeeded: true } => Ok(()),
+            drtioaux::Packet::DmaRemoveTraceReply { destination: 0, succeeded: false } => Err(Error::DmaEraseFail(destination)),
+            packet => Err(Error::UnexpectedPacket(packet)),
         }
     }
 
-    pub fn ddma_send_playback(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
-            id: u32, destination: u8, timestamp: u64) -> Result<(), &'static str> {
+    pub fn ddma_send_playback(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &drtio_routing::RoutingTable, id: u32, destination: u8, timestamp: u64) -> Result<(), Error> {
         let linkno = routing_table.0[destination as usize][0] - 1;
-        let reply = aux_transact(io, aux_mutex, linkno, 
-            &drtioaux::Packet::DmaPlaybackRequest{ id: id, destination: destination, timestamp: timestamp });
+        let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+            &drtioaux::Packet::DmaPlaybackRequest{ id: id, source: 0, destination: destination, timestamp: timestamp })?;
         match reply {
-            Ok(drtioaux::Packet::DmaPlaybackReply { succeeded: true }) => return Ok(()),
-            Ok(drtioaux::Packet::DmaPlaybackReply { succeeded: false }) =>
-                    return Err("error on DMA playback request"),
-            Ok(_) => return Err("received unexpected aux packet during DMA playback"),
-            Err(_) => return Err("aux error on DMA playback")
+            drtioaux::Packet::DmaPlaybackReply { destination: 0, succeeded: true } => Ok(()),
+            drtioaux::Packet::DmaPlaybackReply { destination: 0, succeeded: false } =>
+                    Err(Error::DmaPlaybackFail(destination)),
+            packet => Err(Error::UnexpectedPacket(packet)),
         }
     }
 
     #[cfg(has_rtio_analyzer)]
-    fn analyzer_get_data(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
-        destination: u8) -> Result<RemoteBuffer, &'static str> {
+    fn analyzer_get_data(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable, destination: u8) -> Result<RemoteBuffer, Error> {
         let linkno = routing_table.0[destination as usize][0] - 1;
-        let reply = aux_transact(io, aux_mutex, linkno, 
-            &drtioaux::Packet::AnalyzerHeaderRequest { destination: destination });
+        let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+            &drtioaux::Packet::AnalyzerHeaderRequest { destination: destination })?;
         let (sent, total, overflow) = match reply {
-            Ok(drtioaux::Packet::AnalyzerHeader { 
-                sent_bytes, total_byte_count, overflow_occurred }
-            ) => (sent_bytes, total_byte_count, overflow_occurred),
-            Ok(_) => return Err("received unexpected aux packet during remote analyzer header request"),
-            Err(e) => return Err(e)
+            drtioaux::Packet::AnalyzerHeader { sent_bytes, total_byte_count, overflow_occurred } => 
+                (sent_bytes, total_byte_count, overflow_occurred),
+            packet => return Err(Error::UnexpectedPacket(packet)),
         };
 
         let mut remote_data: Vec<u8> = Vec::new();
         if sent > 0 {
             let mut last_packet = false;
             while !last_packet {
-                let reply = aux_transact(io, aux_mutex, linkno, 
-                    &drtioaux::Packet::AnalyzerDataRequest { destination: destination });
+                let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+                    &drtioaux::Packet::AnalyzerDataRequest { destination: destination })?;
                 match reply {
-                    Ok(drtioaux::Packet::AnalyzerData { last, length, data }) => { 
+                    drtioaux::Packet::AnalyzerData { last, length, data } => { 
                         last_packet = last;
                         remote_data.extend(&data[0..length as usize]);
                     },
-                    Ok(_) => return Err("received unexpected aux packet during remote analyzer data request"),
-                    Err(e) => return Err(e)
+                    packet => return Err(Error::UnexpectedPacket(packet)),
                 }
             }
         }
@@ -463,18 +563,83 @@ pub mod drtio {
     }
 
     #[cfg(has_rtio_analyzer)]
-    pub fn analyzer_query(io: &Io, aux_mutex: &Mutex, routing_table: &drtio_routing::RoutingTable,
-        up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>
-    ) -> Result<Vec<RemoteBuffer>, &'static str> {
+    pub fn analyzer_query(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable, up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>
+    ) -> Result<Vec<RemoteBuffer>, Error> {
         let mut remote_buffers: Vec<RemoteBuffer> = Vec::new();
         for i in 1..drtio_routing::DEST_COUNT {
             if destination_up(up_destinations, i as u8) {
-                remote_buffers.push(analyzer_get_data(io, aux_mutex, routing_table, i as u8)?);
+                remote_buffers.push(analyzer_get_data(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, i as u8)?);
             }
         }
         Ok(remote_buffers)
     }
 
+    pub fn subkernel_upload(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+            routing_table: &drtio_routing::RoutingTable, id: u32, destination: u8, data: &Vec<u8>) -> Result<(), Error> {
+        let linkno = routing_table.0[destination as usize][0] - 1;
+        partition_data(data, |slice, status, len: usize| {
+            let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+                &drtioaux::Packet::SubkernelAddDataRequest {
+                    id: id, destination: destination, status: status, length: len as u16, data: *slice})?;
+            match reply {
+                drtioaux::Packet::SubkernelAddDataReply { succeeded: true } => Ok(()),
+                drtioaux::Packet::SubkernelAddDataReply { succeeded: false } =>  
+                    Err(Error::SubkernelAddFail(destination)),
+                    packet => Err(Error::UnexpectedPacket(packet)),
+            }
+        })
+    }
+
+    pub fn subkernel_load(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+            routing_table: &drtio_routing::RoutingTable, id: u32, destination: u8, run: bool
+        ) -> Result<(), Error> {
+        let linkno = routing_table.0[destination as usize][0] - 1;
+        let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+            &drtioaux::Packet::SubkernelLoadRunRequest{ id: id, source: 0, destination: destination, run: run })?;
+        match reply {
+            drtioaux::Packet::SubkernelLoadRunReply { destination: 0, succeeded: true } => Ok(()),
+            drtioaux::Packet::SubkernelLoadRunReply { destination: 0, succeeded: false } =>
+                    Err(Error::SubkernelRunFail(destination)),
+                packet => Err(Error::UnexpectedPacket(packet)),
+        }
+    }
+
+    pub fn subkernel_retrieve_exception(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable, destination: u8
+    ) -> Result<Vec<u8>, Error> {
+        let linkno = routing_table.0[destination as usize][0] - 1;
+        let mut remote_data: Vec<u8> = Vec::new();
+        loop {
+            let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+                &drtioaux::Packet::SubkernelExceptionRequest { destination: destination })?;
+            match reply {
+                drtioaux::Packet::SubkernelException { last, length, data } => { 
+                    remote_data.extend(&data[0..length as usize]);
+                    if last {
+                        return Ok(remote_data);
+                    }
+                },
+                packet => return Err(Error::UnexpectedPacket(packet)),
+            }
+        }
+    }
+
+    pub fn subkernel_send_message(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+        routing_table: &drtio_routing::RoutingTable, id: u32, destination: u8, message: &[u8]
+    ) -> Result<(), Error> {
+        let linkno = routing_table.0[destination as usize][0] - 1;
+        partition_data(message, |slice, status, len: usize| {
+            let reply = aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+                &drtioaux::Packet::SubkernelMessage {
+                    source: 0, destination: destination,
+                    id: id, status: status, length: len as u16, data: *slice})?;
+            match reply {
+                drtioaux::Packet::SubkernelMessageAck { .. } => Ok(()),
+                packet => Err(Error::UnexpectedPacket(packet)),
+            }
+        })
+    }
 }
 
 #[cfg(not(has_drtio))]
@@ -484,8 +649,8 @@ pub mod drtio {
     pub fn startup(_io: &Io, _aux_mutex: &Mutex,
         _routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>,
         _up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-        _ddma_mutex: &Mutex) {}
-    pub fn reset(_io: &Io, _aux_mutex: &Mutex) {}
+        _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex) {}
+    pub fn reset(_io: &Io, _aux_mutex: &Mutex, _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex, _routing_table: &drtio_routing::RoutingTable) {}
 }
 
 static mut SEEN_ASYNC_ERRORS: u8 = 0;
@@ -548,18 +713,19 @@ fn read_device_map() -> DeviceMap {
 pub fn startup(io: &Io, aux_mutex: &Mutex,
         routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>,
         up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-        ddma_mutex: &Mutex) {
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex) {
     set_device_map(read_device_map());
-    drtio::startup(io, aux_mutex, routing_table, up_destinations, ddma_mutex);
+    drtio::startup(io, aux_mutex, routing_table, up_destinations, ddma_mutex, subkernel_mutex);
     unsafe {
         csr::rtio_core::reset_phy_write(1);
     }
     io.spawn(4096, async_error_thread);
 }
 
-pub fn reset(io: &Io, aux_mutex: &Mutex) {
+pub fn reset(io: &Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+    routing_table: &drtio_routing::RoutingTable) {
     unsafe {
         csr::rtio_core::reset_write(1);
     }
-    drtio::reset(io, aux_mutex)
+    drtio::reset(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table)
 }

artiq/firmware/runtime/session.rs

@@ -1,9 +1,14 @@
 use core::{mem, str, cell::{Cell, RefCell}, fmt::Write as FmtWrite};
-use alloc::{vec::Vec, string::String};
+use alloc::{vec::Vec, string::{String, ToString}};
 use byteorder::{ByteOrder, NativeEndian};
 use cslice::CSlice;
+#[cfg(has_drtio)]
+use tar_no_std::TarArchiveRef;
 
+use dyld::elf;
 use io::{Read, Write, Error as IoError};
+#[cfg(has_drtio)]
+use io::Cursor;
 use board_misoc::{ident, cache, config};
 use {mailbox, rpc_queue, kernel};
 use urc::Urc;
@@ -12,6 +17,10 @@ use rtio_clocking;
 use rtio_dma::Manager as DmaManager;
 #[cfg(has_drtio)]
 use rtio_dma::remote_dma;
+#[cfg(has_drtio)]
+use kernel::{subkernel, subkernel::Error as SubkernelError};
+#[cfg(has_drtio)]
+use rtio_mgt::drtio;
 use rtio_mgt::get_async_errors;
 use cache::Cache;
 use kern_hwreq;
@@ -33,6 +42,20 @@ pub enum Error<T> {
     ClockFailure,
     #[fail(display = "protocol error: {}", _0)]
     Protocol(#[cause] host::Error<T>),
+    #[fail(display = "subkernel io error")]
+    SubkernelIoError,
+    #[cfg(has_drtio)]
+    #[fail(display = "DDMA error: {}", _0)]
+    Ddma(#[cause] remote_dma::Error),
+    #[cfg(has_drtio)]
+    #[fail(display = "subkernel destination is down")]
+    DestinationDown,
+    #[cfg(has_drtio)]
+    #[fail(display = "subkernel error: {}", _0)]
+    Subkernel(#[cause] SubkernelError),
+    #[cfg(has_drtio)]
+    #[fail(display = "drtio aux error: {}", _0)]
+    DrtioAux(#[cause] drtio::Error),
     #[fail(display = "{}", _0)]
     Unexpected(String),
 }
@@ -43,6 +66,16 @@ impl<T> From<host::Error<T>> for Error<T> {
     }
 }
 
+#[cfg(has_drtio)]
+impl From<drtio::Error> for Error<SchedError> {
+    fn from(value: drtio::Error) -> Error<SchedError> {
+        match value {
+            drtio::Error::SchedError(x) => Error::from(x),
+            x => Error::DrtioAux(x),
+        }
+    }
+}
+
 impl From<SchedError> for Error<SchedError> {
     fn from(value: SchedError) -> Error<SchedError> {
         Error::Protocol(host::Error::Io(IoError::Other(value)))
@@ -55,10 +88,57 @@ impl From<IoError<SchedError>> for Error<SchedError> {
     }
 }
 
+impl From<&str> for Error<SchedError> {
+    fn from(value: &str) -> Error<SchedError> {
+        Error::Unexpected(value.to_string())
+    }
+}
+
+impl From<io::Error<!>> for Error<SchedError> {
+    fn from(_value: io::Error<!>) -> Error<SchedError> {
+        Error::SubkernelIoError
+    }
+}
+
+#[cfg(has_drtio)]
+impl From<SubkernelError> for Error<SchedError> {
+    fn from(value: SubkernelError) -> Error<SchedError> {
+        match value {
+            SubkernelError::SchedError(x) => Error::from(x),
+            SubkernelError::DrtioError(x) => Error::from(x),
+            x => Error::Subkernel(x),
+        }
+    }
+}
+
+#[cfg(has_drtio)]
+impl From<remote_dma::Error> for Error<SchedError> {
+    fn from(value: remote_dma::Error) -> Error<SchedError> {
+        match value {
+            remote_dma::Error::SchedError(x) => Error::from(x),
+            remote_dma::Error::DrtioError(x) => Error::from(x),
+            x => Error::Ddma(x),
+        }
+    }
+}
+
 macro_rules! unexpected {
      ($($arg:tt)*) => (return Err(Error::Unexpected(format!($($arg)*))));
 }
 
+#[cfg(has_drtio)]
+macro_rules! propagate_subkernel_exception {
+    ( $exception:ident, $stream:ident ) => {
+        error!("Exception in subkernel");
+        match $stream {
+            None => return Ok(true),
+            Some(ref mut $stream) => { 
+                $stream.write_all($exception)?;
+            }
+        }
+    }
+}
+
 // Persistent state
 #[derive(Debug)]
 struct Congress {
@@ -131,6 +211,8 @@ fn host_read<R>(reader: &mut R) -> Result<host::Request, Error<R::ReadError>>
     let request = host::Request::read_from(reader)?;
     match &request {
         &host::Request::LoadKernel(_) => debug!("comm<-host LoadLibrary(...)"),
+        &host::Request::UploadSubkernel { id, destination, kernel: _} => debug!(
+            "comm<-host UploadSubkernel(id: {}, destination: {}, ...)", id, destination),
         _ => debug!("comm<-host {:?}", request)
     }
     Ok(request)
@@ -161,12 +243,13 @@ pub fn kern_send(io: &Io, request: &kern::Message) -> Result<(), Error<SchedErro
 
 fn kern_recv_notrace<R, F>(io: &Io, f: F) -> Result<R, Error<SchedError>>
         where F: FnOnce(&kern::Message) -> Result<R, Error<SchedError>> {
-    io.until(|| mailbox::receive() != 0)?;
-    if !kernel::validate(mailbox::receive()) {
-        return Err(Error::InvalidPointer(mailbox::receive()))
+    let mut msg_ptr = 0;
+    io.until(|| { msg_ptr = mailbox::receive(); msg_ptr != 0 })?;
+    if !kernel::validate(msg_ptr) {
+        return Err(Error::InvalidPointer(msg_ptr))
     }
 
-    f(unsafe { &*(mailbox::receive() as *const kern::Message) })
+    f(unsafe { &*(msg_ptr as *const kern::Message) })
 }
 
 fn kern_recv_dotrace(reply: &kern::Message) {
@@ -233,8 +316,65 @@ fn kern_run(session: &mut Session) -> Result<(), Error<SchedError>> {
     kern_acknowledge()
 }
 
-fn process_host_message(io: &Io,
-                        stream: &mut TcpStream,
+
+fn process_flash_kernel(io: &Io, _aux_mutex: &Mutex, _subkernel_mutex: &Mutex, _ddma_mutex: &Mutex,
+                        _routing_table: &drtio_routing::RoutingTable,
+                        _up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
+                        session: &mut Session, kernel: &[u8]
+) -> Result<(), Error<SchedError>> {
+    // handle ELF and TAR files
+    if kernel[0] == elf::ELFMAG0 && kernel[1] == elf::ELFMAG1 &&
+       kernel[2] == elf::ELFMAG2 && kernel[3] == elf::ELFMAG3 {
+        // assume ELF file, proceed as before
+        unsafe {
+            // make a copy as kernel CPU cannot read SPI directly
+            kern_load(io, session, Vec::from(kernel).as_ref())
+        }
+    } else {
+        #[cfg(has_drtio)]
+        {  
+            let archive = TarArchiveRef::new(kernel);
+            let entries = archive.entries();
+            let mut main_lib: Option<&[u8]> = None;
+            for entry in entries {
+                if entry.filename().as_str() == "main.elf" {
+                    main_lib = Some(entry.data());
+                } else {
+                    // subkernel filename must be in format:
+                    // "<subkernel id> <destination>.elf"
+                    let filename = entry.filename();
+                    let mut iter = filename.as_str().split_whitespace();
+                    let sid: u32 = iter.next().unwrap()
+                                    .parse().unwrap();
+                    let dest: u8 = iter.next().unwrap()
+                                    .strip_suffix(".elf").unwrap()
+                                    .parse().unwrap();
+                    let up = {
+                        let up_destinations = _up_destinations.borrow();
+                        up_destinations[dest as usize]
+                    };
+                    if up {
+                        let subkernel_lib = entry.data().to_vec();
+                        subkernel::add_subkernel(io, _subkernel_mutex, sid, dest, subkernel_lib)?;
+                        subkernel::upload(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, sid)?;
+                    } else {
+                        return Err(Error::DestinationDown);
+                    }
+                }
+            }
+            unsafe {
+                kern_load(io, session, Vec::from(main_lib.unwrap()).as_ref())
+            }
+        }
+        #[cfg(not(has_drtio))]
+        {
+            unexpected!("multi-kernel libraries are not supported in standalone systems")
+        }
+    }
+}
+
+fn process_host_message(io: &Io, _aux_mutex: &Mutex, _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex,
+                        _routing_table: &drtio_routing::RoutingTable, stream: &mut TcpStream,
                         session: &mut Session) -> Result<(), Error<SchedError>> {
     match host_read(stream)? {
         host::Request::SystemInfo => {
@@ -245,7 +385,7 @@ fn process_host_message(io: &Io,
             session.congress.finished_cleanly.set(true)
         }
 
-        host::Request::LoadKernel(kernel) =>
+        host::Request::LoadKernel(kernel) => {
             match unsafe { kern_load(io, session, &kernel) } {
                 Ok(()) => host_write(stream, host::Reply::LoadCompleted)?,
                 Err(error) => {
@@ -254,7 +394,8 @@ fn process_host_message(io: &Io,
                     host_write(stream, host::Reply::LoadFailed(&description))?;
                     kern_acknowledge()?;
                 }
-            },
+            }
+        },
         host::Request::RunKernel =>
             match kern_run(session) {
                 Ok(()) => (),
@@ -323,6 +464,24 @@ fn process_host_message(io: &Io,
 
             session.kernel_state = KernelState::Running
         }
+
+        host::Request::UploadSubkernel { id: _id, destination: _dest, kernel: _kernel } => {
+            #[cfg(has_drtio)]
+            {
+                subkernel::add_subkernel(io, _subkernel_mutex, _id, _dest, _kernel)?;
+                match subkernel::upload(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, _id) {
+                    Ok(_) => host_write(stream, host::Reply::LoadCompleted)?,
+                    Err(error) => {
+                        subkernel::clear_subkernels(io, _subkernel_mutex)?;
+                        let mut description = String::new();
+                        write!(&mut description, "{}", error).unwrap();
+                        host_write(stream, host::Reply::LoadFailed(&description))?
+                    }
+                }
+            }
+            #[cfg(not(has_drtio))]
+            host_write(stream, host::Reply::LoadFailed("No DRTIO on this system, subkernels are not supported"))?
+        }
     }
 
     Ok(())
@@ -331,7 +490,7 @@ fn process_host_message(io: &Io,
 fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                         routing_table: &drtio_routing::RoutingTable,
                         up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-                        ddma_mutex: &Mutex, mut stream: Option<&mut TcpStream>,
+                        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, mut stream: Option<&mut TcpStream>,
                         session: &mut Session) -> Result<bool, Error<SchedError>> {
     kern_recv_notrace(io, |request| {
         match (request, session.kernel_state) {
@@ -349,7 +508,7 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
 
         kern_recv_dotrace(request);
 
-        if kern_hwreq::process_kern_hwreq(io, aux_mutex, routing_table, up_destinations, request)? {
+        if kern_hwreq::process_kern_hwreq(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, up_destinations, request)? {
             return Ok(false)
         }
 
@@ -373,7 +532,7 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                 if let Some(_id) = session.congress.dma_manager.record_start(name) {
                     // replace the record
                     #[cfg(has_drtio)]
-                    remote_dma::erase(io, aux_mutex, ddma_mutex, routing_table, _id);
+                    remote_dma::erase(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, _id)?;
                 }
                 kern_acknowledge()
             }
@@ -382,10 +541,10 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                 kern_acknowledge()
             }
             &kern::DmaRecordStop { duration, enable_ddma } => {
-                let _id = session.congress.dma_manager.record_stop(duration, enable_ddma, io, ddma_mutex);
+                let _id = session.congress.dma_manager.record_stop(duration, enable_ddma, io, ddma_mutex)?;
                 #[cfg(has_drtio)]
                 if enable_ddma {
-                    remote_dma::upload_traces(io, aux_mutex, ddma_mutex, routing_table, _id);
+                    remote_dma::upload_traces(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, _id)?;
                 }
                 cache::flush_l2_cache();
                 kern_acknowledge()
@@ -393,7 +552,7 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
             &kern::DmaEraseRequest { name } => {
                 #[cfg(has_drtio)]
                 if let Some(id) = session.congress.dma_manager.get_id(name) {
-                    remote_dma::erase(io, aux_mutex, ddma_mutex, routing_table, *id);
+                    remote_dma::erase(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, *id)?;
                 }
                 session.congress.dma_manager.erase(name);
                 kern_acknowledge()
@@ -402,7 +561,7 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                 session.congress.dma_manager.with_trace(name, |trace, duration| {
                     #[cfg(has_drtio)]
                     let uses_ddma = match trace {
-                        Some(trace) => remote_dma::has_remote_traces(io, aux_mutex, trace.as_ptr() as u32),
+                        Some(trace) => remote_dma::has_remote_traces(io, aux_mutex, trace.as_ptr() as u32)?,
                         None => false
                     };
                     #[cfg(not(has_drtio))]
@@ -416,7 +575,7 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
             }
             &kern::DmaStartRemoteRequest { id: _id, timestamp: _timestamp } => {
                 #[cfg(has_drtio)]
-                remote_dma::playback(io, aux_mutex, ddma_mutex, routing_table, _id as u32, _timestamp as u64);
+                remote_dma::playback(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, _id as u32, _timestamp as u64)?;
                 kern_acknowledge()
             }
             &kern::DmaAwaitRemoteRequest { id: _id } => {
@@ -441,7 +600,7 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                     None => unexpected!("unexpected RPC in flash kernel"),
                     Some(ref mut stream) => {
                         host_write(stream, host::Reply::RpcRequest { async: async })?;
-                        rpc::send_args(stream, service, tag, data)?;
+                        rpc::send_args(stream, service, tag, data, true)?;
                         if !async {
                             session.kernel_state = KernelState::RpcWait
                         }
@@ -474,6 +633,8 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                 unsafe { kernel::stop() }
                 session.kernel_state = KernelState::Absent;
                 unsafe { session.congress.cache.unborrow() }
+                #[cfg(has_drtio)]
+                subkernel::clear_subkernels(io, subkernel_mutex)?;
 
                 match stream {
                     None => return Ok(true),
@@ -491,6 +652,8 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                 unsafe { kernel::stop() }
                 session.kernel_state = KernelState::Absent;
                 unsafe { session.congress.cache.unborrow() }
+                #[cfg(has_drtio)]
+                subkernel::clear_subkernels(io, subkernel_mutex)?;
 
                 match stream {
                     None => {
@@ -510,6 +673,113 @@ fn process_kern_message(io: &Io, aux_mutex: &Mutex,
                     }
                 }
             }
+            #[cfg(has_drtio)]
+            &kern::SubkernelLoadRunRequest { id, destination: _, run } => {
+                let succeeded = match subkernel::load(
+                    io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, run) {
+                        Ok(()) => true,
+                        Err(e) => { error!("Error loading subkernel: {}", e); false }
+                    };
+                kern_send(io, &kern::SubkernelLoadRunReply { succeeded: succeeded })
+            }
+            #[cfg(has_drtio)]
+            &kern::SubkernelAwaitFinishRequest{ id, timeout } => {
+                let res = subkernel::await_finish(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table,
+                    id, timeout);
+                let status = match res {
+                    Ok(ref res) => {
+                            if res.comm_lost {
+                                kern::SubkernelStatus::CommLost
+                            } else if let Some(exception) = &res.exception {
+                                propagate_subkernel_exception!(exception, stream);
+                                // will not be called after exception is served
+                                kern::SubkernelStatus::OtherError
+                            } else {
+                                kern::SubkernelStatus::NoError
+                            }
+                        },
+                    Err(SubkernelError::Timeout) => kern::SubkernelStatus::Timeout,
+                    Err(SubkernelError::IncorrectState) => kern::SubkernelStatus::IncorrectState,
+                    Err(_) => kern::SubkernelStatus::OtherError
+                };
+                kern_send(io, &kern::SubkernelAwaitFinishReply { status: status })
+            }
+            #[cfg(has_drtio)]
+            &kern::SubkernelMsgSend { id, destination, count, tag, data } => {
+                subkernel::message_send(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, id, destination, count, tag, data)?;
+                kern_acknowledge()
+            }
+            #[cfg(has_drtio)]
+            &kern::SubkernelMsgRecvRequest { id, timeout, tags } => {
+                let message_received = subkernel::message_await(io, subkernel_mutex, id as u32, timeout);
+                let (status, count) = match message_received {
+                    Ok(ref message) => (kern::SubkernelStatus::NoError, message.count),
+                    Err(SubkernelError::Timeout) => (kern::SubkernelStatus::Timeout, 0),
+                    Err(SubkernelError::IncorrectState) => (kern::SubkernelStatus::IncorrectState, 0),
+                    Err(SubkernelError::SubkernelFinished) => {
+                        let res = subkernel::retrieve_finish_status(io, aux_mutex, ddma_mutex, subkernel_mutex,
+                            routing_table, id as u32)?;
+                        if res.comm_lost {
+                            (kern::SubkernelStatus::CommLost, 0)
+                        } else if let Some(exception) = &res.exception {
+                            propagate_subkernel_exception!(exception, stream);
+                            (kern::SubkernelStatus::OtherError, 0)
+                        } else {
+                            (kern::SubkernelStatus::OtherError, 0)
+                        }
+                    }
+                    Err(_) => (kern::SubkernelStatus::OtherError, 0)
+                };
+                kern_send(io, &kern::SubkernelMsgRecvReply { status: status, count: count})?;
+                if let Ok(message) = message_received {
+                    // receive code almost identical to RPC recv, except we are not reading from a stream
+                    let mut reader = Cursor::new(message.data);
+                    let mut current_tags = tags;
+                    let mut i = 0;
+                    loop {
+                        // kernel has to consume all arguments in the whole message
+                        let slot = kern_recv(io, |reply| {
+                            match reply {
+                                &kern::RpcRecvRequest(slot) => Ok(slot),
+                                other => unexpected!(
+                                    "expected root value slot from kernel CPU, not {:?}", other)
+                            }
+                        })?;
+                        let res = rpc::recv_return(&mut reader, current_tags, slot, &|size| -> Result<_, Error<SchedError>> {
+                            if size == 0 {
+                                return Ok(0 as *mut ())
+                            }
+                            kern_send(io, &kern::RpcRecvReply(Ok(size)))?;
+                            Ok(kern_recv(io, |reply| {
+                                match reply {
+                                    &kern::RpcRecvRequest(slot) => Ok(slot),
+                                    other => unexpected!(
+                                        "expected nested value slot from kernel CPU, not {:?}", other)
+                                }
+                            })?)
+                        });
+                        match res {
+                            Ok(new_tags) => {
+                                kern_send(io, &kern::RpcRecvReply(Ok(0)))?;
+                                i += 1;
+                                if i < message.count {
+                                    // update the tag for next read
+                                    current_tags = new_tags;
+                                } else {
+                                    // should be done by then
+                                    break;
+                                }
+                            },
+                            Err(_) => unexpected!("expected valid subkernel message data")
+                        };
+                    }
+                    Ok(())
+                } else {
+                    // if timed out, no data has been received, exception should be raised by kernel
+                    Ok(())
+                }
+            },
+
             request => unexpected!("unexpected request {:?} from kernel CPU", request)
         }.and(Ok(false))
     })
@@ -530,13 +800,17 @@ fn process_kern_queued_rpc(stream: &mut TcpStream,
 fn host_kernel_worker(io: &Io, aux_mutex: &Mutex,
                       routing_table: &drtio_routing::RoutingTable,
                       up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-                      ddma_mutex: &Mutex, stream: &mut TcpStream,
+                      ddma_mutex: &Mutex, subkernel_mutex: &Mutex,
+                      stream: &mut TcpStream,
                       congress: &mut Congress) -> Result<(), Error<SchedError>> {
     let mut session = Session::new(congress);
+    #[cfg(has_drtio)]
+    subkernel::clear_subkernels(&io, &subkernel_mutex)?;
 
     loop {
         if stream.can_recv() {
-            process_host_message(io, stream, &mut session)?
+            process_host_message(io, aux_mutex, ddma_mutex, subkernel_mutex,
+                routing_table, stream, &mut session)?
         } else if !stream.may_recv() {
             return Ok(())
         }
@@ -548,7 +822,7 @@ fn host_kernel_worker(io: &Io, aux_mutex: &Mutex,
         if mailbox::receive() != 0 {
             process_kern_message(io, aux_mutex,
                 routing_table, up_destinations,
-                ddma_mutex,
+                ddma_mutex, subkernel_mutex,
                 Some(stream), &mut session)?;
         }
 
@@ -566,17 +840,23 @@ fn host_kernel_worker(io: &Io, aux_mutex: &Mutex,
 fn flash_kernel_worker(io: &Io, aux_mutex: &Mutex,
                        routing_table: &drtio_routing::RoutingTable,
                        up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-                       ddma_mutex: &Mutex, congress: &mut Congress,
+                       ddma_mutex: &Mutex, subkernel_mutex: &Mutex, congress: &mut Congress,
                        config_key: &str) -> Result<(), Error<SchedError>> {
     let mut session = Session::new(congress);
 
     config::read(config_key, |result| {
         match result {
-            Ok(kernel) => unsafe {
-                // kernel CPU cannot access the SPI flash address space directly,
-                // so make a copy.
-                kern_load(io, &mut session, Vec::from(kernel).as_ref())
-            },
+            Ok(kernel) => {
+                // process .ELF or .TAR kernels
+                let res = process_flash_kernel(io, aux_mutex, subkernel_mutex, ddma_mutex, routing_table, up_destinations, &mut session, kernel);
+                #[cfg(has_drtio)]
+                match res {
+                    // wait to establish the DRTIO connection
+                    Err(Error::DestinationDown) => io.sleep(500)?,
+                    _ => ()
+                }
+                res
+            }
             _ => Err(Error::KernelNotFound)
         }
     })?;
@@ -588,7 +868,7 @@ fn flash_kernel_worker(io: &Io, aux_mutex: &Mutex,
         }
 
         if mailbox::receive() != 0 {
-            if process_kern_message(io, aux_mutex, routing_table, up_destinations, ddma_mutex, None, &mut session)? {
+            if process_kern_message(io, aux_mutex, routing_table, up_destinations, ddma_mutex, subkernel_mutex, None, &mut session)? {
                 return Ok(())
             }
         }
@@ -613,13 +893,13 @@ fn respawn<F>(io: &Io, handle: &mut Option<ThreadHandle>, f: F)
         }
     }
 
-    *handle = Some(io.spawn(16384, f))
+    *handle = Some(io.spawn(32768, f))
 }
 
 pub fn thread(io: Io, aux_mutex: &Mutex,
         routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>,
         up_destinations: &Urc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-        ddma_mutex: &Mutex) {
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex) {
     let listener = TcpListener::new(&io, 65535);
     listener.listen(1381).expect("session: cannot listen");
     info!("accepting network sessions");
@@ -628,9 +908,11 @@ pub fn thread(io: Io, aux_mutex: &Mutex,
 
     let mut kernel_thread = None;
     {
+        let routing_table = routing_table.borrow();
         let mut congress = congress.borrow_mut();
         info!("running startup kernel");
-        match flash_kernel_worker(&io, &aux_mutex, &routing_table.borrow(), &up_destinations, ddma_mutex, &mut congress, "startup_kernel") {
+        match flash_kernel_worker(&io, &aux_mutex, &routing_table, &up_destinations, 
+                ddma_mutex, subkernel_mutex, &mut congress, "startup_kernel") {
             Ok(()) =>
                 info!("startup kernel finished"),
             Err(Error::KernelNotFound) =>
@@ -671,24 +953,37 @@ pub fn thread(io: Io, aux_mutex: &Mutex,
             let up_destinations = up_destinations.clone();
             let congress = congress.clone();
             let ddma_mutex = ddma_mutex.clone();
+            let subkernel_mutex = subkernel_mutex.clone();
             let stream = stream.into_handle();
             respawn(&io, &mut kernel_thread, move |io| {
                 let routing_table = routing_table.borrow();
                 let mut congress = congress.borrow_mut();
                 let mut stream = TcpStream::from_handle(&io, stream);
-                match host_kernel_worker(&io, &aux_mutex, &routing_table, &up_destinations, &ddma_mutex, &mut stream, &mut *congress) {
+                match host_kernel_worker(&io, &aux_mutex, &routing_table, &up_destinations, 
+                        &ddma_mutex, &subkernel_mutex, &mut stream, &mut *congress) {
                     Ok(()) => (),
                     Err(Error::Protocol(host::Error::Io(IoError::UnexpectedEnd))) =>
                         info!("connection closed"),
                     Err(Error::Protocol(host::Error::Io(
-                            IoError::Other(SchedError::Interrupted)))) =>
-                        info!("kernel interrupted"),
+                            IoError::Other(SchedError::Interrupted)))) => {
+                        info!("kernel interrupted");
+                        #[cfg(has_drtio)]
+                        drtio::clear_buffers(&io, &aux_mutex);
+                    }
                     Err(err) => {
                         congress.finished_cleanly.set(false);
                         error!("session aborted: {}", err);
+                        #[cfg(has_drtio)]
+                        drtio::clear_buffers(&io, &aux_mutex);
                     }
                 }
-                stream.close().expect("session: close socket");
+                loop {
+                    match stream.close() {
+                        Ok(_) => break,
+                        Err(SchedError::Interrupted) => (),
+                        Err(e) => panic!("session: close socket: {:?}", e)
+                    };
+                }
             });
         }
 
@@ -700,22 +995,32 @@ pub fn thread(io: Io, aux_mutex: &Mutex,
             let up_destinations = up_destinations.clone();
             let congress = congress.clone();
             let ddma_mutex = ddma_mutex.clone();
+            let subkernel_mutex = subkernel_mutex.clone();
             respawn(&io, &mut kernel_thread, move |io| {
                 let routing_table = routing_table.borrow();
                 let mut congress = congress.borrow_mut();
-                match flash_kernel_worker(&io, &aux_mutex, &routing_table, &up_destinations, &ddma_mutex, &mut *congress, "idle_kernel") {
+                match flash_kernel_worker(&io, &aux_mutex, &routing_table, &up_destinations, 
+                    &ddma_mutex, &subkernel_mutex, &mut *congress, "idle_kernel") {
                     Ok(()) =>
                         info!("idle kernel finished, standing by"),
                     Err(Error::Protocol(host::Error::Io(
-                            IoError::Other(SchedError::Interrupted)))) =>
-                        info!("idle kernel interrupted"),
+                            IoError::Other(SchedError::Interrupted)))) => {
+                        info!("idle kernel interrupted");
+                        // clear state for regular kernel
+                        #[cfg(has_drtio)]
+                        drtio::clear_buffers(&io, &aux_mutex);
+                    }
                     Err(Error::KernelNotFound) => {
                         info!("no idle kernel found");
                         while io.relinquish().is_ok() {}
                     }
-                    Err(err) =>
-                        error!("idle kernel aborted: {}", err)
+                    Err(err) => {
+                        error!("idle kernel aborted: {}", err);
+                        #[cfg(has_drtio)]
+                        drtio::clear_buffers(&io, &aux_mutex);
+                    }
                 }
+
             })
         }
 

artiq/firmware/satman/Cargo.toml

@@ -14,8 +14,11 @@ build_misoc = { path = "../libbuild_misoc" }
 
 [dependencies]
 log = { version = "0.4", default-features = false }
+io = { path = "../libio", features = ["byteorder", "alloc"] }
+cslice = { version = "0.3" }
 board_misoc = { path = "../libboard_misoc", features = ["uart_console", "log"] }
 board_artiq = { path = "../libboard_artiq", features = ["alloc"] }
 alloc_list = { path = "../liballoc_list" }
 riscv = { version = "0.6.0", features = ["inline-asm"] }
 proto_artiq = { path = "../libproto_artiq", features = ["log", "alloc"] }
+eh = { path = "../libeh" }

artiq/firmware/satman/Makefile

@@ -1,9 +1,14 @@
 include ../include/generated/variables.mak
 include $(MISOC_DIRECTORY)/software/common.mak
 
-LDFLAGS += -L../libbase
+CFLAGS += \
+	-I$(LIBUNWIND_DIRECTORY) \
+	-I$(LIBUNWIND_DIRECTORY)/../unwinder/include
 
-RUSTFLAGS += -Cpanic=abort
+LDFLAGS += \
+	-L../libunwind
+
+RUSTFLAGS += -Cpanic=unwind
 
 all:: satman.bin satman.fbi
 
@@ -13,8 +18,12 @@ $(RUSTOUT)/libsatman.a:
 	--manifest-path $(SATMAN_DIRECTORY)/Cargo.toml \
 	--target $(SATMAN_DIRECTORY)/../$(CARGO_TRIPLE).json
 
-satman.elf: $(RUSTOUT)/libsatman.a
-	$(link) -T $(SATMAN_DIRECTORY)/satman.ld
+satman.elf: $(RUSTOUT)/libsatman.a ksupport_data.o
+	$(link) -T $(SATMAN_DIRECTORY)/../firmware.ld \
+	-lunwind-vexriscv-bare -m elf32lriscv
+
+ksupport_data.o: ../ksupport/ksupport.elf 
+	$(LD) -r -m elf32lriscv -b binary -o $@ $<
 
 %.bin: %.elf
 	$(objcopy) -O binary

artiq/firmware/satman/analyzer.rs

@@ -1,6 +1,6 @@
 use core::cmp::min;
 use board_misoc::{csr, cache};
-use proto_artiq::drtioaux_proto::ANALYZER_MAX_SIZE;
+use proto_artiq::drtioaux_proto::SAT_PAYLOAD_MAX_SIZE;
 
 const BUFFER_SIZE: usize = 512 * 1024;
 
@@ -86,10 +86,10 @@ impl Analyzer {
         }
     }
 
-    pub fn get_data(&mut self, data_slice: &mut [u8; ANALYZER_MAX_SIZE]) -> AnalyzerSliceMeta {
+    pub fn get_data(&mut self, data_slice: &mut [u8; SAT_PAYLOAD_MAX_SIZE]) -> AnalyzerSliceMeta {
         let data = unsafe { &BUFFER.data[..] };
         let i = (self.data_pointer + self.sent_bytes) % BUFFER_SIZE;
-        let len = min(ANALYZER_MAX_SIZE, self.data_len - self.sent_bytes);
+        let len = min(SAT_PAYLOAD_MAX_SIZE, self.data_len - self.sent_bytes);
         let last = self.sent_bytes + len == self.data_len;
 
         if i + len >= BUFFER_SIZE {

artiq/firmware/satman/cache.rs

@@ -0,0 +1,83 @@
+use alloc::{vec, vec::Vec, string::String, collections::btree_map::BTreeMap};
+use cslice::{CSlice, AsCSlice};
+use core::mem::transmute;
+
+struct Entry {
+    data: Vec<i32>,
+    slice: CSlice<'static, i32>,
+    borrowed: bool
+}
+
+impl core::fmt::Debug for Entry {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_struct("Entry")
+         .field("data", &self.data)
+         .field("borrowed", &self.borrowed)
+         .finish()
+    }
+}
+
+pub struct Cache {
+    entries: BTreeMap<String, Entry>,
+    empty: CSlice<'static, i32>,
+}
+
+impl core::fmt::Debug for Cache {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_struct("Cache")
+         .field("entries", &self.entries)
+         .finish()
+    }
+}
+
+impl Cache {
+    pub fn new() -> Cache {
+        let empty_vec = vec![];
+        let empty = unsafe {
+            transmute::<CSlice<'_, i32>, CSlice<'static, i32>>(empty_vec.as_c_slice())
+        };
+        Cache { entries: BTreeMap::new(), empty }
+    }
+
+    pub fn get(&mut self, key: &str) -> *const CSlice<'static, i32> {
+        match self.entries.get_mut(key) {
+            None => &self.empty,
+            Some(ref mut entry) => {
+                entry.borrowed = true;
+                &entry.slice
+            }
+        }
+    }
+
+    pub fn put(&mut self, key: &str, data: &[i32]) -> Result<(), ()> {
+        match self.entries.get_mut(key) {
+            None => (),
+            Some(ref mut entry) => {
+                if entry.borrowed { return Err(()) }
+                entry.data = Vec::from(data);
+                unsafe {
+                    entry.slice = transmute::<CSlice<'_, i32>, CSlice<'static, i32>>(
+                        entry.data.as_c_slice());
+                }
+                return Ok(())
+            }
+        }
+
+        let data = Vec::from(data);
+        let slice = unsafe {
+            transmute::<CSlice<'_, i32>, CSlice<'static, i32>>(data.as_c_slice())
+        };
+        self.entries.insert(String::from(key), Entry {
+            data,
+            slice,
+            borrowed: false
+        });
+        Ok(())
+    }
+
+    pub unsafe fn unborrow(&mut self) {
+        for (_key, entry) in self.entries.iter_mut() {
+            entry.borrowed = false;
+        }
+    }
+}

artiq/firmware/satman/dma.rs

@@ -1,39 +1,190 @@
+use alloc::{vec::Vec, collections::btree_map::BTreeMap, string::String};
+use core::mem;
+use board_artiq::{drtioaux, drtio_routing::RoutingTable};
 use board_misoc::{csr, cache::flush_l2_cache};
-use alloc::{vec::Vec, collections::btree_map::BTreeMap};
+use proto_artiq::drtioaux_proto::PayloadStatus;
+use routing::{Router, Sliceable};
+use kernel::Manager as KernelManager;
+use ::{cricon_select, cricon_read, RtioMaster, MASTER_PAYLOAD_MAX_SIZE};
 
 const ALIGNMENT: usize = 64;
 
-#[derive(Debug, PartialEq)]
+#[derive(PartialEq)]
 enum ManagerState {
     Idle,
     Playback
 }
 
 pub struct RtioStatus {
+    pub source: u8,
     pub id: u32, 
-    pub error: u8, 
+    pub error: u8,
     pub channel: u32, 
     pub timestamp: u64
 }
 
+#[derive(Debug)]
 pub enum Error {
     IdNotFound,
     PlaybackInProgress,
-    EntryNotComplete
+    EntryNotComplete,
+    MasterDmaFound,
+    UploadFail,
 }
 
-#[derive(Debug)]
 struct Entry {
     trace: Vec<u8>,
     padding_len: usize,
-    complete: bool
+    complete: bool,
+    duration: u64, // relevant for locally ran DMA
+}
+
+impl Entry {
+    pub fn from_vec(data: Vec<u8>, duration: u64) -> Entry {
+        let mut entry = Entry {
+            trace: data,
+            padding_len: 0,
+            complete: true,
+            duration: duration,
+        };
+        entry.realign();
+        entry
+    }
+
+    pub fn id(&self) -> u32 {
+        self.trace[self.padding_len..].as_ptr() as u32
+    }
+
+    pub fn realign(&mut self) {
+        self.trace.push(0);
+        let data_len = self.trace.len();
+
+        self.trace.reserve(ALIGNMENT - 1);
+        let padding = ALIGNMENT - self.trace.as_ptr() as usize % ALIGNMENT;
+        let padding = if padding == ALIGNMENT { 0 } else { padding };
+        for _ in 0..padding {
+            // Vec guarantees that this will not reallocate
+            self.trace.push(0)
+        }
+        for i in 1..data_len + 1 {
+            self.trace[data_len + padding - i] = self.trace[data_len - i]
+        }
+        self.complete = true;
+        self.padding_len = padding;
+    }
+}
+
+enum RemoteTraceState {
+    Unsent,
+    Sending(usize),
+    Ready,
+    Running(usize),
+}
+
+struct RemoteTraces {
+    remote_traces: BTreeMap<u8, Sliceable>,
+    state: RemoteTraceState,
+}
+
+impl RemoteTraces {
+    pub fn new(traces: BTreeMap<u8, Sliceable>) -> RemoteTraces {
+        RemoteTraces {
+            remote_traces: traces,
+            state: RemoteTraceState::Unsent
+        }
+    }
+
+    // on subkernel request
+    pub fn upload_traces(&mut self, id: u32, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) -> usize {
+        let len = self.remote_traces.len();
+        if len > 0 {
+            self.state = RemoteTraceState::Sending(self.remote_traces.len());
+            for (dest, trace) in self.remote_traces.iter_mut() {
+                // queue up the first packet for all destinations, rest will be sent after first ACK
+                let mut data_slice: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                let meta = trace.get_slice_master(&mut data_slice);
+                router.route(drtioaux::Packet::DmaAddTraceRequest {
+                    source: self_destination, destination: *dest, id: id,
+                    status: meta.status, length: meta.len, trace: data_slice
+                }, routing_table, rank, self_destination);
+            }
+        }
+        len
+    }
+
+    // on incoming Packet::DmaAddTraceReply
+    pub fn ack_upload(&mut self, kernel_manager: &mut KernelManager, source: u8, id: u32, succeeded: bool, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
+        if let RemoteTraceState::Sending(count) = self.state {
+            if let Some(trace) = self.remote_traces.get_mut(&source) {
+                if trace.at_end() {
+                        if count - 1 == 0 {
+                            self.state = RemoteTraceState::Ready;
+                            kernel_manager.ddma_remote_uploaded(succeeded);
+                        } else {
+                            self.state = RemoteTraceState::Sending(count - 1);
+                        }
+                } else {
+                    // send next slice
+                    let mut data_slice: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                    let meta = trace.get_slice_master(&mut data_slice);
+                    router.route(drtioaux::Packet::DmaAddTraceRequest {
+                        source: self_destination, destination: meta.destination, id: id,
+                        status: meta.status, length: meta.len, trace: data_slice
+                    }, routing_table, rank, self_destination);
+                }
+            }
+        }
+        
+    }
+
+    // on subkernel request
+    pub fn playback(&mut self, id: u32, timestamp: u64, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
+        // route all the playback requests
+        // remote traces + local trace
+        self.state = RemoteTraceState::Running(self.remote_traces.len() + 1);
+        for (dest, _) in self.remote_traces.iter() {
+            router.route(drtioaux::Packet::DmaPlaybackRequest {
+                source: self_destination, destination: *dest, id: id, timestamp: timestamp
+            }, routing_table, rank, self_destination);
+            // response will be ignored (succeeded = false handled by the main thread)
+        }
+    }
+
+    // on incoming Packet::DmaPlaybackDone
+    pub fn remote_finished(&mut self, kernel_manager: &mut KernelManager, error: u8, channel: u32, timestamp: u64) {
+        if let RemoteTraceState::Running(count) = self.state {
+            if error != 0 || count - 1 == 0 {
+                // notify the kernel about a DDMA error or finish
+                kernel_manager.ddma_finished(error, channel, timestamp);
+                self.state = RemoteTraceState::Ready;
+                // further messages will be ignored (if there was an error)
+            } else { // no error and not the last one awaited
+                self.state = RemoteTraceState::Running(count - 1);
+            }
+        }
+    }
+
+    pub fn erase(&mut self, id: u32, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
+        for (dest, _) in self.remote_traces.iter() {
+            router.route(drtioaux::Packet::DmaRemoveTraceRequest { 
+                source: self_destination, destination: *dest, id: id
+            }, routing_table, rank, self_destination);
+            // response will be ignored as this object will stop existing too
+        }
+    }
 }
 
-#[derive(Debug)]
 pub struct Manager {
-    entries: BTreeMap<u32, Entry>,
+    entries: BTreeMap<(u8, u32), Entry>,
     state: ManagerState,
-    currentid: u32
+    current_id: u32,
+    current_source: u8,
+    previous_cri_master: RtioMaster,
+
+    remote_entries: BTreeMap<u32, RemoteTraces>,
+    name_map: BTreeMap<String, u32>,
+    recording_trace: Vec<u8>,
+    recording_name: String
 }
 
 impl Manager {
@@ -45,71 +196,197 @@ impl Manager {
         }
         Manager {
             entries: BTreeMap::new(),
-            currentid: 0,
+            current_id: 0,
+            current_source: 0,
+            previous_cri_master: RtioMaster::Drtio,
             state: ManagerState::Idle,
+            remote_entries: BTreeMap::new(),
+            name_map: BTreeMap::new(),
+            recording_trace: Vec::new(),
+            recording_name: String::new(),
         }
     }
 
-    pub fn add(&mut self, id: u32, last: bool, trace: &[u8], trace_len: usize) -> Result<(), Error> {
-        let entry = match self.entries.get_mut(&id) {
+    pub fn add(&mut self, source: u8, id: u32, status: PayloadStatus, trace: &[u8], trace_len: usize) -> Result<(), Error> {
+        if status.is_first() {
+            self.entries.remove(&(source, id));
+        }
+        let entry = match self.entries.get_mut(&(source, id)) {
             Some(entry) => {
                 if entry.complete {
                     // replace entry
-                    self.entries.remove(&id);
-                    self.entries.insert(id, Entry {
+                    self.entries.remove(&(source, id));
+                    self.entries.insert((source, id), Entry {
                         trace: Vec::new(),
                         padding_len: 0,
-                        complete: false });
-                    self.entries.get_mut(&id).unwrap()
+                        complete: false,
+                        duration: 0
+                    });
+                    self.entries.get_mut(&(source, id)).unwrap()
                 } else {
                     entry
                 }
             },
             None => {
-                self.entries.insert(id, Entry {
+                self.entries.insert((source, id), Entry {
                     trace: Vec::new(),
                     padding_len: 0,
-                    complete: false });
-                self.entries.get_mut(&id).unwrap()
+                    complete: false,
+                    duration: 0,
+                });
+                self.entries.get_mut(&(source, id)).unwrap()
             },
         };
         entry.trace.extend(&trace[0..trace_len]);
 
-        if last {
-            entry.trace.push(0);
-            let data_len = entry.trace.len();
-    
-            // Realign.
-            entry.trace.reserve(ALIGNMENT - 1);
-            let padding = ALIGNMENT - entry.trace.as_ptr() as usize % ALIGNMENT;
-            let padding = if padding == ALIGNMENT { 0 } else { padding };
-            for _ in 0..padding {
-                // Vec guarantees that this will not reallocate
-                entry.trace.push(0)
-            }
-            for i in 1..data_len + 1 {
-                entry.trace[data_len + padding - i] = entry.trace[data_len - i]
-            }
-            entry.complete = true;
-            entry.padding_len = padding;
+        if status.is_last() {
+            entry.realign();
             flush_l2_cache();
         }
         Ok(())
     }
+    // API for subkernel
+    pub fn record_start(&mut self, name: &str) {
+        self.recording_name = String::from(name);
+        self.recording_trace = Vec::new();
+    }
 
-    pub fn erase(&mut self, id: u32) -> Result<(), Error> {
-        match self.entries.remove(&id) {
+    // API for subkernel
+    pub fn record_append(&mut self, data: &[u8]) {
+        self.recording_trace.extend_from_slice(data);
+    }
+
+    // API for subkernel
+    pub fn record_stop(&mut self, duration: u64, self_destination: u8) -> Result<u32, Error> {
+        let mut trace = Vec::new();
+        mem::swap(&mut self.recording_trace, &mut trace);
+        trace.push(0);
+        let mut local_trace = Vec::new();
+        let mut remote_traces: BTreeMap<u8, Sliceable> = BTreeMap::new();
+        // analyze each entry and put in proper buckets, as the kernel core
+        // sends whole chunks, to limit comms/kernel CPU communication,
+        // and as only comms core has access to varios DMA buffers.
+        let mut ptr = 0;
+        while trace[ptr] != 0 {
+            // ptr + 3 = tgt >> 24 (destination)
+            let len = trace[ptr] as usize;
+            let destination = trace[ptr+3];
+            if destination == 0 {
+                return Err(Error::MasterDmaFound);
+            } else if destination == self_destination {
+                local_trace.extend(&trace[ptr..ptr+len]);
+            }
+            else {
+                if let Some(remote_trace) = remote_traces.get_mut(&destination) {
+                    remote_trace.extend(&trace[ptr..ptr+len]);
+                } else {
+                    remote_traces.insert(destination, Sliceable::new(destination, trace[ptr..ptr+len].to_vec()));
+                }
+            }
+            // and jump to the next event
+            ptr += len;
+        }
+        let local_entry = Entry::from_vec(local_trace, duration);
+        let id = local_entry.id();
+
+        self.entries.insert((self_destination, id), local_entry);
+        self.remote_entries.insert(id, RemoteTraces::new(remote_traces));
+        let mut name = String::new();
+        mem::swap(&mut self.recording_name, &mut name);
+        self.name_map.insert(name, id);
+
+        flush_l2_cache();
+
+        Ok(id)
+    }
+
+    pub fn upload_traces(&mut self, id: u32, router: &mut Router, rank: u8, self_destination: u8,
+            routing_table: &RoutingTable) -> Result<usize, Error> {
+        let remote_traces = self.remote_entries.get_mut(&id);
+        let mut len = 0;
+        if let Some(traces) = remote_traces {
+            len = traces.upload_traces(id, router, rank, self_destination, routing_table);
+        }
+        Ok(len)
+    }
+
+    pub fn with_trace<F, R>(&self, self_destination: u8, name: &str, f: F) -> R
+        where F: FnOnce(Option<&[u8]>, u64) -> R {
+        if let Some(ptr) = self.name_map.get(name) {
+            match self.entries.get(&(self_destination, *ptr)) {
+                Some(entry) => f(Some(&entry.trace[entry.padding_len..]), entry.duration),
+                None => f(None, 0)
+            }
+        } else {
+            f(None, 0)
+        }
+    }
+
+    // API for subkernel
+    pub fn playback_remote(&mut self, id: u32, timestamp: u64, 
+        router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable
+    ) -> Result<(), Error> {
+        if let Some(traces) = self.remote_entries.get_mut(&id) {
+            traces.playback(id, timestamp, router, rank, self_destination, routing_table);
+            Ok(())
+        } else {
+            Err(Error::IdNotFound)
+        }
+    }
+
+    // API for subkernel
+    pub fn erase_name(&mut self, name: &str, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
+        if let Some(id) = self.name_map.get(name) {
+            if let Some(traces) = self.remote_entries.get_mut(&id) {
+                traces.erase(*id, router, rank, self_destination, routing_table);
+                self.remote_entries.remove(&id);
+            }
+            self.entries.remove(&(self_destination, *id));
+            self.name_map.remove(name);
+        }
+    }
+
+    // API for incoming DDMA (drtio)
+    pub fn erase(&mut self, source: u8, id: u32) -> Result<(), Error> {
+        match self.entries.remove(&(source, id)) {
             Some(_) => Ok(()),
             None => Err(Error::IdNotFound)
         }
     }
 
-    pub fn playback(&mut self, id: u32, timestamp: u64) -> Result<(), Error> {
+    pub fn remote_finished(&mut self, kernel_manager: &mut KernelManager, 
+        id: u32, error: u8, channel: u32, timestamp: u64) {
+        if let Some(entry) = self.remote_entries.get_mut(&id) {
+            entry.remote_finished(kernel_manager, error, channel, timestamp);
+        }
+    }
+
+    pub fn ack_upload(&mut self, kernel_manager: &mut KernelManager, source: u8, id: u32, succeeded: bool, 
+        router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
+            if let Some(entry) = self.remote_entries.get_mut(&id) {
+                entry.ack_upload(kernel_manager, source, id, succeeded, router, rank, self_destination, routing_table);
+            }
+    }
+
+    pub fn cleanup(&mut self, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
+        // after subkernel ends, remove all self-generated traces
+        for (_, id) in self.name_map.iter_mut() {
+            if let Some(traces) = self.remote_entries.get_mut(&id) {
+                traces.erase(*id, router, rank, self_destination, routing_table);
+                self.remote_entries.remove(&id);
+            }
+            self.entries.remove(&(self_destination, *id));
+        }
+        self.name_map.clear();
+    }
+
+    // API for both incoming DDMA (drtio) and subkernel
+    pub fn playback(&mut self, source: u8, id: u32, timestamp: u64) -> Result<(), Error> {
         if self.state != ManagerState::Idle {
             return Err(Error::PlaybackInProgress);
         }
 
-        let entry = match self.entries.get(&id){
+        let entry = match self.entries.get(&(source, id)){
             Some(entry) => entry,
             None => { return Err(Error::IdNotFound); }
         };
@@ -120,20 +397,22 @@ impl Manager {
         assert!(ptr as u32 % 64 == 0);
 
         self.state = ManagerState::Playback;
-        self.currentid = id;
+        self.current_id = id;
+        self.current_source = source;
+        self.previous_cri_master = cricon_read();
 
         unsafe {
             csr::rtio_dma::base_address_write(ptr as u64);
             csr::rtio_dma::time_offset_write(timestamp as u64);
     
-            csr::cri_con::selected_write(1);
+            cricon_select(RtioMaster::Dma);
             csr::rtio_dma::enable_write(1);
             // playback has begun here, for status call check_state
         }
         Ok(())
     }
 
-    pub fn check_state(&mut self) -> Option<RtioStatus> {
+    pub fn get_status(&mut self) -> Option<RtioStatus> {
         if self.state != ManagerState::Playback {
             // nothing to report
             return None;
@@ -141,19 +420,19 @@ impl Manager {
         let dma_enable = unsafe { csr::rtio_dma::enable_read() };
         if dma_enable != 0 {
             return None;
-        }
-        else {
+        } else {
             self.state = ManagerState::Idle;
             unsafe { 
-                csr::cri_con::selected_write(0);
-                let error =  csr::rtio_dma::error_read();
+                cricon_select(self.previous_cri_master);
+                let error = csr::rtio_dma::error_read();
                 let channel = csr::rtio_dma::error_channel_read();
                 let timestamp = csr::rtio_dma::error_timestamp_read();
                 if error != 0 {
                     csr::rtio_dma::error_write(1);
                 }
-                return Some(RtioStatus { 
-                    id: self.currentid, 
+                return Some(RtioStatus {
+                    source: self.current_source,
+                    id: self.current_id,
                     error: error,
                     channel: channel, 
                     timestamp: timestamp });
@@ -161,4 +440,8 @@ impl Manager {
         }
     }
 
+    pub fn running(&self) -> bool {
+        self.state == ManagerState::Playback
+    }
+
 }

artiq/firmware/satman/main.rs

@@ -1,4 +1,4 @@
-#![feature(never_type, panic_info_message, llvm_asm, default_alloc_error_handler)]
+#![feature(never_type, panic_info_message, asm, default_alloc_error_handler)]
 #![no_std]
 
 #[macro_use]
@@ -9,28 +9,38 @@ extern crate board_artiq;
 extern crate riscv;
 extern crate alloc;
 extern crate proto_artiq;
+extern crate cslice;
+extern crate io;
+extern crate eh;
 
 use core::convert::TryFrom;
 use board_misoc::{csr, ident, clock, uart_logger, i2c, pmp};
 #[cfg(has_si5324)]
 use board_artiq::si5324;
-use board_artiq::{spi, drtioaux};
+#[cfg(has_si549)]
+use board_artiq::si549;
+#[cfg(soc_platform = "kasli")]
+use board_misoc::irq;
+use board_artiq::{spi, drtioaux, drtio_routing};
 #[cfg(soc_platform = "efc")]
 use board_artiq::ad9117;
-use board_artiq::drtio_routing;
-use proto_artiq::drtioaux_proto::ANALYZER_MAX_SIZE;
+use proto_artiq::drtioaux_proto::{SAT_PAYLOAD_MAX_SIZE, MASTER_PAYLOAD_MAX_SIZE};
 #[cfg(has_drtio_eem)]
 use board_artiq::drtio_eem;
 use riscv::register::{mcause, mepc, mtval};
 use dma::Manager as DmaManager;
+use kernel::Manager as KernelManager;
 use analyzer::Analyzer;
 
 #[global_allocator]
 static mut ALLOC: alloc_list::ListAlloc = alloc_list::EMPTY;
 
 mod repeater;
+mod routing;
 mod dma;
 mod analyzer;
+mod kernel;
+mod cache;
 
 fn drtiosat_reset(reset: bool) {
     unsafe {
@@ -60,6 +70,33 @@ fn drtiosat_tsc_loaded() -> bool {
     }
 }
 
+#[derive(Clone, Copy)]
+pub enum RtioMaster {
+    Drtio,
+    Dma,
+    Kernel
+}
+
+pub fn cricon_select(master: RtioMaster) {
+    let val = match master {
+        RtioMaster::Drtio => 0,
+        RtioMaster::Dma => 1,
+        RtioMaster::Kernel => 2
+    };
+    unsafe {
+        csr::cri_con::selected_write(val);
+    }
+}
+
+pub fn cricon_read() -> RtioMaster {
+    let val = unsafe { csr::cri_con::selected_read() };
+    match val {
+        0 => RtioMaster::Drtio,
+        1 => RtioMaster::Dma,
+        2 => RtioMaster::Kernel,
+        _ => unreachable!()
+    }
+}
 
 #[cfg(has_drtio_routing)]
 macro_rules! forward {
@@ -68,7 +105,14 @@ macro_rules! forward {
         if hop != 0 {
             let repno = (hop - 1) as usize;
             if repno < $repeaters.len() {
-                return $repeaters[repno].aux_forward($packet);
+                if $packet.expects_response() {
+                    return $repeaters[repno].aux_forward($packet);
+                } else {
+                    let res = $repeaters[repno].aux_send($packet);
+                    // allow the satellite to parse the packet before next
+                    clock::spin_us(10_000);
+                    return res;
+                }
             } else {
                 return Err(drtioaux::Error::RoutingError);
             }
@@ -81,9 +125,10 @@ macro_rules! forward {
     ($routing_table:expr, $destination:expr, $rank:expr, $repeaters:expr, $packet:expr) => {}
 }
 
-fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repeaters: &mut [repeater::Repeater],
-        _routing_table: &mut drtio_routing::RoutingTable, _rank: &mut u8,
-        packet: drtioaux::Packet) -> Result<(), drtioaux::Error<!>> {
+fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmgr: &mut KernelManager,
+        _repeaters: &mut [repeater::Repeater], _routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8,
+        router: &mut routing::Router, self_destination: &mut u8, packet: drtioaux::Packet
+) -> Result<(), drtioaux::Error<!>> {
     // In the code below, *_chan_sel_write takes an u8 if there are fewer than 256 channels,
     // and u16 otherwise; hence the `as _` conversion.
     match packet {
@@ -102,51 +147,45 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             drtioaux::send(0, &drtioaux::Packet::ResetAck)
         },
 
-        drtioaux::Packet::DestinationStatusRequest { destination: _destination } => {
+        drtioaux::Packet::DestinationStatusRequest { destination } => {
             #[cfg(has_drtio_routing)]
-            let hop = _routing_table.0[_destination as usize][*_rank as usize];
+            let hop = _routing_table.0[destination as usize][*rank as usize];
             #[cfg(not(has_drtio_routing))]
             let hop = 0;
 
             if hop == 0 {
-                // async messages
-                if let Some(status) = _manager.check_state() {
-                    info!("playback done, error: {}, channel: {}, timestamp: {}", status.error, status.channel, status.timestamp);
-                    drtioaux::send(0, &drtioaux::Packet::DmaPlaybackStatus { 
-                        destination: _destination, id: status.id, error: status.error, channel: status.channel, timestamp: status.timestamp })?;
-                } else {
-                    let errors;
+                *self_destination = destination;
+                let errors;
+                unsafe {
+                    errors = csr::drtiosat::rtio_error_read();
+                }
+                if errors & 1 != 0 {
+                    let channel;
                     unsafe {
-                        errors = csr::drtiosat::rtio_error_read();
+                        channel = csr::drtiosat::sequence_error_channel_read();
+                        csr::drtiosat::rtio_error_write(1);
                     }
-                    if errors & 1 != 0 {
-                        let channel;
-                        unsafe {
-                            channel = csr::drtiosat::sequence_error_channel_read();
-                            csr::drtiosat::rtio_error_write(1);
-                        }
-                        drtioaux::send(0,
-                            &drtioaux::Packet::DestinationSequenceErrorReply { channel })?;
-                    } else if errors & 2 != 0 {
-                        let channel;
-                        unsafe {
-                            channel = csr::drtiosat::collision_channel_read();
-                            csr::drtiosat::rtio_error_write(2);
-                        }
-                        drtioaux::send(0,
-                            &drtioaux::Packet::DestinationCollisionReply { channel })?;
-                    } else if errors & 4 != 0 {
-                        let channel;
-                        unsafe {
-                            channel = csr::drtiosat::busy_channel_read();
-                            csr::drtiosat::rtio_error_write(4);
-                        }
-                        drtioaux::send(0,
-                            &drtioaux::Packet::DestinationBusyReply { channel })?;
+                    drtioaux::send(0,
+                        &drtioaux::Packet::DestinationSequenceErrorReply { channel })?;
+                } else if errors & 2 != 0 {
+                    let channel;
+                    unsafe {
+                        channel = csr::drtiosat::collision_channel_read();
+                        csr::drtiosat::rtio_error_write(2);
                     }
-                    else {
-                        drtioaux::send(0, &drtioaux::Packet::DestinationOkReply)?;
+                    drtioaux::send(0,
+                        &drtioaux::Packet::DestinationCollisionReply { channel })?;
+                } else if errors & 4 != 0 {
+                    let channel;
+                    unsafe {
+                        channel = csr::drtiosat::busy_channel_read();
+                        csr::drtiosat::rtio_error_write(4);
                     }
+                    drtioaux::send(0,
+                        &drtioaux::Packet::DestinationBusyReply { channel })?;
+                }
+                else {
+                    drtioaux::send(0, &drtioaux::Packet::DestinationOkReply)?;
                 }
             }
 
@@ -157,7 +196,7 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
                     if hop <= csr::DRTIOREP.len() {
                         let repno = hop - 1;
                         match _repeaters[repno].aux_forward(&drtioaux::Packet::DestinationStatusRequest {
-                            destination: _destination
+                            destination: destination
                         }) {
                             Ok(()) => (),
                             Err(drtioaux::Error::LinkDown) => drtioaux::send(0, &drtioaux::Packet::DestinationDownReply)?,
@@ -171,7 +210,6 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
                     }
                 }
             }
-
             Ok(())
         }
 
@@ -186,18 +224,18 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             drtioaux::send(0, &drtioaux::Packet::RoutingAck)
         }
         #[cfg(has_drtio_routing)]
-        drtioaux::Packet::RoutingSetRank { rank } => {
-            *_rank = rank;
-            drtio_routing::interconnect_enable_all(_routing_table, rank);
+        drtioaux::Packet::RoutingSetRank { rank: new_rank } => {
+            *rank = new_rank;
+            drtio_routing::interconnect_enable_all(_routing_table, new_rank);
 
-            let rep_rank = rank + 1;
+            let rep_rank = new_rank + 1;
             for rep in _repeaters.iter() {
                 if let Err(e) = rep.set_rank(rep_rank) {
                     error!("failed to set rank ({})", e);
                 }
             }
 
-            info!("rank: {}", rank);
+            info!("rank: {}", new_rank);
             info!("routing table: {}", _routing_table);
 
             drtioaux::send(0, &drtioaux::Packet::RoutingAck)
@@ -213,7 +251,7 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
         }
 
         drtioaux::Packet::MonitorRequest { destination: _destination, channel, probe } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let value;
             #[cfg(has_rtio_moninj)]
             unsafe {
@@ -230,7 +268,7 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             drtioaux::send(0, &reply)
         },
         drtioaux::Packet::InjectionRequest { destination: _destination, channel, overrd, value } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             #[cfg(has_rtio_moninj)]
             unsafe {
                 csr::rtio_moninj::inj_chan_sel_write(channel as _);
@@ -240,7 +278,7 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             Ok(())
         },
         drtioaux::Packet::InjectionStatusRequest { destination: _destination, channel, overrd } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let value;
             #[cfg(has_rtio_moninj)]
             unsafe {
@@ -256,22 +294,22 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
         },
 
         drtioaux::Packet::I2cStartRequest { destination: _destination, busno } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let succeeded = i2c::start(busno).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::I2cRestartRequest { destination: _destination, busno } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let succeeded = i2c::restart(busno).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::I2cStopRequest { destination: _destination, busno } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let succeeded = i2c::stop(busno).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::I2cWriteRequest { destination: _destination, busno, data } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             match i2c::write(busno, data) {
                 Ok(ack) => drtioaux::send(0,
                     &drtioaux::Packet::I2cWriteReply { succeeded: true, ack: ack }),
@@ -280,7 +318,7 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             }
         }
         drtioaux::Packet::I2cReadRequest { destination: _destination, busno, ack } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             match i2c::read(busno, ack) {
                 Ok(data) => drtioaux::send(0,
                     &drtioaux::Packet::I2cReadReply { succeeded: true, data: data }),
@@ -289,25 +327,25 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             }
         }
         drtioaux::Packet::I2cSwitchSelectRequest { destination: _destination, busno, address, mask } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let succeeded = i2c::switch_select(busno, address, mask).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
 
         drtioaux::Packet::SpiSetConfigRequest { destination: _destination, busno, flags, length, div, cs } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let succeeded = spi::set_config(busno, flags, length, div, cs).is_ok();
             drtioaux::send(0,
                 &drtioaux::Packet::SpiBasicReply { succeeded: succeeded })
         },
         drtioaux::Packet::SpiWriteRequest { destination: _destination, busno, data } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let succeeded = spi::write(busno, data).is_ok();
             drtioaux::send(0,
                 &drtioaux::Packet::SpiBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::SpiReadRequest { destination: _destination, busno } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             match spi::read(busno) {
                 Ok(data) => drtioaux::send(0,
                     &drtioaux::Packet::SpiReadReply { succeeded: true, data: data }),
@@ -317,7 +355,7 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
         }
 
         drtioaux::Packet::AnalyzerHeaderRequest { destination: _destination } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
             let header = analyzer.get_header();
             drtioaux::send(0, &drtioaux::Packet::AnalyzerHeader {
                 total_byte_count: header.total_byte_count,
@@ -327,8 +365,8 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
         }
 
         drtioaux::Packet::AnalyzerDataRequest { destination: _destination } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let mut data_slice: [u8; ANALYZER_MAX_SIZE] = [0; ANALYZER_MAX_SIZE];
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            let mut data_slice: [u8; SAT_PAYLOAD_MAX_SIZE] = [0; SAT_PAYLOAD_MAX_SIZE];
             let meta = analyzer.get_data(&mut data_slice);
             drtioaux::send(0, &drtioaux::Packet::AnalyzerData {
                 last: meta.last,
@@ -337,26 +375,114 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
             })
         }
 
-        #[cfg(has_rtio_dma)]
-        drtioaux::Packet::DmaAddTraceRequest { destination: _destination, id, last, length, trace } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = _manager.add(id, last, &trace, length as usize).is_ok();
-            drtioaux::send(0,
-                &drtioaux::Packet::DmaAddTraceReply { succeeded: succeeded })
+        drtioaux::Packet::DmaAddTraceRequest { source, destination, id, status, length, trace } => {
+            forward!(_routing_table, destination, *rank, _repeaters, &packet);
+            *self_destination = destination;
+            let succeeded = dmamgr.add(source, id, status, &trace, length as usize).is_ok();
+            router.send(drtioaux::Packet::DmaAddTraceReply { 
+                source: *self_destination, destination: source, id: id, succeeded: succeeded 
+            }, _routing_table, *rank, *self_destination)
         }
-        #[cfg(has_rtio_dma)]
-        drtioaux::Packet::DmaRemoveTraceRequest { destination: _destination, id } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = _manager.erase(id).is_ok();
-            drtioaux::send(0,
-                &drtioaux::Packet::DmaRemoveTraceReply { succeeded: succeeded })
+        drtioaux::Packet::DmaAddTraceReply { source, destination: _destination, id, succeeded } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            dmamgr.ack_upload(kernelmgr, source, id, succeeded, router, *rank, *self_destination, _routing_table);
+            Ok(())
         }
-        #[cfg(has_rtio_dma)]
-        drtioaux::Packet::DmaPlaybackRequest { destination: _destination, id, timestamp } => {
-            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = _manager.playback(id, timestamp).is_ok();
+        drtioaux::Packet::DmaRemoveTraceRequest { source, destination: _destination, id } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            let succeeded = dmamgr.erase(source, id).is_ok();
+            router.send(drtioaux::Packet::DmaRemoveTraceReply { 
+                destination: source, succeeded: succeeded 
+            }, _routing_table, *rank, *self_destination)
+        }
+        drtioaux::Packet::DmaPlaybackRequest { source, destination: _destination, id, timestamp } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            // no DMA with a running kernel
+            let succeeded = !kernelmgr.is_running() && dmamgr.playback(source, id, timestamp).is_ok();
+            router.send(drtioaux::Packet::DmaPlaybackReply { 
+                destination: source, succeeded: succeeded
+            }, _routing_table, *rank, *self_destination)
+        }
+        drtioaux::Packet::DmaPlaybackReply { destination: _destination, succeeded } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            if !succeeded {
+                kernelmgr.ddma_nack();
+            }
+            Ok(())
+        }
+        drtioaux::Packet::DmaPlaybackStatus { source: _, destination: _destination, id, error, channel, timestamp } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            dmamgr.remote_finished(kernelmgr, id, error, channel, timestamp);
+            Ok(())
+        }
+
+        drtioaux::Packet::SubkernelAddDataRequest { destination, id, status, length, data } => {
+            forward!(_routing_table, destination, *rank, _repeaters, &packet);
+            *self_destination = destination;
+            let succeeded = kernelmgr.add(id, status, &data, length as usize).is_ok();
             drtioaux::send(0,
-                &drtioaux::Packet::DmaPlaybackReply { succeeded: succeeded })
+                &drtioaux::Packet::SubkernelAddDataReply { succeeded: succeeded })
+        }
+        drtioaux::Packet::SubkernelLoadRunRequest { source, destination: _destination, id, run } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            let mut succeeded = kernelmgr.load(id).is_ok();
+            // allow preloading a kernel with delayed run
+            if run {
+                if dmamgr.running() {
+                    // cannot run kernel while DDMA is running
+                    succeeded = false;
+                } else {
+                    succeeded |= kernelmgr.run(source, id).is_ok();
+                }
+            }
+            router.send(drtioaux::Packet::SubkernelLoadRunReply { 
+                    destination: source, succeeded: succeeded 
+                }, 
+            _routing_table, *rank, *self_destination)
+        }
+        drtioaux::Packet::SubkernelLoadRunReply { destination: _destination, succeeded } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            // received if local subkernel started another, remote subkernel
+            kernelmgr.subkernel_load_run_reply(succeeded, *self_destination);
+            Ok(())
+        }
+        drtioaux::Packet::SubkernelFinished { destination: _destination, id, with_exception, exception_src } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            kernelmgr.remote_subkernel_finished(id, with_exception, exception_src);
+            Ok(())
+        }
+        drtioaux::Packet::SubkernelExceptionRequest { destination: _destination } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            let mut data_slice: [u8; SAT_PAYLOAD_MAX_SIZE] = [0; SAT_PAYLOAD_MAX_SIZE];
+            let meta = kernelmgr.exception_get_slice(&mut data_slice);
+            drtioaux::send(0, &drtioaux::Packet::SubkernelException {
+                last: meta.status.is_last(),
+                length: meta.len,
+                data: data_slice,
+            })
+        }
+        drtioaux::Packet::SubkernelMessage { source, destination: _destination, id, status, length, data } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            kernelmgr.message_handle_incoming(status, length as usize, id, &data);
+            router.send(drtioaux::Packet::SubkernelMessageAck {
+                    destination: source
+                }, _routing_table, *rank, *self_destination)
+        }
+        drtioaux::Packet::SubkernelMessageAck { destination: _destination } => {
+            forward!(_routing_table, _destination, *rank, _repeaters, &packet);
+            if kernelmgr.message_ack_slice() {
+                let mut data_slice: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                if let Some(meta) = kernelmgr.message_get_slice(&mut data_slice) {
+                    // route and not send immediately as ACKs are not a beginning of a transaction
+                    router.route(drtioaux::Packet::SubkernelMessage {
+                        source: *self_destination, destination: meta.destination, id: kernelmgr.get_current_id().unwrap(),
+                        status: meta.status, length: meta.len as u16, data: data_slice
+                    }, _routing_table, *rank, *self_destination);
+                } else {
+                    error!("Error receiving message slice");
+                }
+            }
+            Ok(())
         }
 
         _ => {
@@ -367,27 +493,25 @@ fn process_aux_packet(_manager: &mut DmaManager, analyzer: &mut Analyzer, _repea
 }
 
 fn process_aux_packets(dma_manager: &mut DmaManager, analyzer: &mut Analyzer,
-        repeaters: &mut [repeater::Repeater],
-        routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8) {
+        kernelmgr: &mut KernelManager, repeaters: &mut [repeater::Repeater],
+        routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8, router: &mut routing::Router,
+        destination: &mut u8) {
     let result =
         drtioaux::recv(0).and_then(|packet| {
-            if let Some(packet) = packet {
-                process_aux_packet(dma_manager, analyzer, repeaters, routing_table, rank, packet)
+            if let Some(packet) = packet.or_else(|| router.get_local_packet()) {
+                process_aux_packet(dma_manager, analyzer, kernelmgr, 
+                    repeaters, routing_table, rank, router, destination, packet)
             } else {
                 Ok(())
             }
         });
-    match result {
-        Ok(()) => (),
-        Err(e) => warn!("aux packet error ({})", e)
+    if let Err(e) = result {
+        warn!("aux packet error ({})", e);
     }
 }
 
 fn drtiosat_process_errors() {
-    let errors;
-    unsafe {
-        errors = csr::drtiosat::protocol_error_read();
-    }
+    let errors = unsafe { csr::drtiosat::protocol_error_read() };
     if errors & 1 != 0 {
         error!("received packet of an unknown type");
     }
@@ -395,26 +519,29 @@ fn drtiosat_process_errors() {
         error!("received truncated packet");
     }
     if errors & 4 != 0 {
-        let destination;
-        unsafe {
-            destination = csr::drtiosat::buffer_space_timeout_dest_read();
-        }
+        let destination = unsafe {
+            csr::drtiosat::buffer_space_timeout_dest_read()
+        };
         error!("timeout attempting to get buffer space from CRI, destination=0x{:02x}", destination)
     }
-    if errors & 8 != 0 {
-        let channel;
-        let timestamp_event;
-        let timestamp_counter;
-        unsafe {
-            channel = csr::drtiosat::underflow_channel_read();
-            timestamp_event = csr::drtiosat::underflow_timestamp_event_read() as i64;
-            timestamp_counter = csr::drtiosat::underflow_timestamp_counter_read() as i64;
+    let drtiosat_active = unsafe { csr::cri_con::selected_read() == 0 };
+    if drtiosat_active {
+        // RTIO errors are handled by ksupport and dma manager
+        if errors & 8 != 0 {
+            let channel;
+            let timestamp_event;
+            let timestamp_counter;
+            unsafe {
+                channel = csr::drtiosat::underflow_channel_read();
+                timestamp_event = csr::drtiosat::underflow_timestamp_event_read() as i64;
+                timestamp_counter = csr::drtiosat::underflow_timestamp_counter_read() as i64;
+            }
+            error!("write underflow, channel={}, timestamp={}, counter={}, slack={}",
+                channel, timestamp_event, timestamp_counter, timestamp_event-timestamp_counter);
+        }
+        if errors & 16 != 0 {
+            error!("write overflow");
         }
-        error!("write underflow, channel={}, timestamp={}, counter={}, slack={}",
-               channel, timestamp_event, timestamp_counter, timestamp_event-timestamp_counter);
-    }
-    if errors & 16 != 0 {
-        error!("write overflow");
     }
     unsafe {
         csr::drtiosat::protocol_error_write(errors);
@@ -472,6 +599,36 @@ const SI5324_SETTINGS: si5324::FrequencySettings
     crystal_as_ckin2: true
 };
 
+#[cfg(all(has_si549, rtio_frequency = "125.0"))]
+const SI549_SETTINGS: si549::FrequencySetting = si549::FrequencySetting {
+    main: si549::DividerConfig {
+        hsdiv: 0x058,
+        lsdiv: 0,
+        fbdiv: 0x04815791F25,
+    },
+    helper: si549::DividerConfig {
+        // 125MHz*32767/32768
+        hsdiv: 0x058,
+        lsdiv: 0,
+        fbdiv: 0x04814E8F442,
+    },
+};
+
+#[cfg(all(has_si549, rtio_frequency = "100.0"))]
+const SI549_SETTINGS: si549::FrequencySetting = si549::FrequencySetting {
+    main: si549::DividerConfig {
+        hsdiv: 0x06C,
+        lsdiv: 0,
+        fbdiv: 0x046C5F49797,
+    },
+    helper: si549::DividerConfig {
+        // 100MHz*32767/32768
+        hsdiv: 0x06C,
+        lsdiv: 0,
+        fbdiv: 0x046C5670BBD,
+    },
+};
+
 #[cfg(not(soc_platform = "efc"))]
 fn sysclk_setup() {
     let switched = unsafe {
@@ -484,9 +641,12 @@ fn sysclk_setup() {
     else {
         #[cfg(has_si5324)]
         si5324::setup(&SI5324_SETTINGS, si5324::Input::Ckin1).expect("cannot initialize Si5324");
+        #[cfg(has_si549)]
+        si549::main_setup(&SI549_SETTINGS).expect("cannot initialize main Si549");
+
         info!("Switching sys clock, rebooting...");
         // delay for clean UART log, wait until UART FIFO is empty
-        clock::spin_us(1300);
+        clock::spin_us(3000);
         unsafe {
             csr::gt_drtio::stable_clkin_write(1);
         }
@@ -507,6 +667,10 @@ pub extern fn main() -> i32 {
         ALLOC.add_range(&mut _fheap, &mut _eheap);
         pmp::init_stack_guard(&_sstack_guard as *const u8 as usize);
     }
+    #[cfg(soc_platform = "kasli")]
+    irq::enable_interrupts();
+    #[cfg(has_wrpll)]
+    irq::enable(csr::WRPLL_INTERRUPT);
 
     clock::init();
     uart_logger::ConsoleLogger::register();
@@ -542,25 +706,43 @@ pub extern fn main() -> i32 {
     #[cfg(not(soc_platform = "efc"))]
     sysclk_setup();
 
+    #[cfg(has_si549)]
+    si549::helper_setup(&SI549_SETTINGS).expect("cannot initialize helper Si549");    
+
     #[cfg(soc_platform = "efc")]
     let mut io_expander;
     #[cfg(soc_platform = "efc")]
     {
+        let p3v3_fmc_en_pin;
+        let vadj_fmc_en_pin;
+
+        #[cfg(hw_rev = "v1.0")]
+        {
+            p3v3_fmc_en_pin = 0;
+            vadj_fmc_en_pin = 1;
+        }
+        #[cfg(hw_rev = "v1.1")]
+        {
+            p3v3_fmc_en_pin = 1;
+            vadj_fmc_en_pin = 7;
+        }
+
         io_expander = board_misoc::io_expander::IoExpander::new().unwrap();
-        
+        io_expander.init().expect("I2C I/O expander initialization failed");
+
         // Enable LEDs
         io_expander.set_oe(0, 1 << 5 | 1 << 6 | 1 << 7).unwrap();
         
         // Enable VADJ and P3V3_FMC
-        io_expander.set_oe(1, 1 << 0 | 1 << 1).unwrap();
+        io_expander.set_oe(1, 1 << p3v3_fmc_en_pin | 1 << vadj_fmc_en_pin).unwrap();
 
-        io_expander.set(1, 0, true);
-        io_expander.set(1, 1, true);
+        io_expander.set(1, p3v3_fmc_en_pin, true);
+        io_expander.set(1, vadj_fmc_en_pin, true);
 
         io_expander.service().unwrap();
     }
 
-    #[cfg(not(has_drtio_eem))]
+    #[cfg(not(soc_platform = "efc"))]
     unsafe {
         csr::gt_drtio::txenable_write(0xffffffffu32 as _);
     }
@@ -584,6 +766,7 @@ pub extern fn main() -> i32 {
     } 
     let mut routing_table = drtio_routing::RoutingTable::default_empty();
     let mut rank = 1;
+    let mut destination = 1;
 
     let mut hardware_tick_ts = 0;
 
@@ -591,10 +774,12 @@ pub extern fn main() -> i32 {
     ad9117::init().expect("AD9117 initialization failed");
     
     loop {
+        let mut router = routing::Router::new();
+
         while !drtiosat_link_rx_up() {
             drtiosat_process_errors();
             for rep in repeaters.iter_mut() {
-                rep.service(&routing_table, rank);
+                rep.service(&routing_table, rank, destination, &mut router);
             }
             #[cfg(all(soc_platform = "kasli", hw_rev = "v2.0"))]
             {
@@ -613,23 +798,28 @@ pub extern fn main() -> i32 {
             si5324::siphaser::calibrate_skew().expect("failed to calibrate skew");
         }
 
-        // DMA manager created here, so when link is dropped, all DMA traces
-        // are cleared out for a clean slate on subsequent connections,
-        // without a manual intervention.
+        #[cfg(has_wrpll)]
+        si549::wrpll::select_recovered_clock(true);
+
+        // various managers created here, so when link is dropped, DMA traces,
+        // analyzer logs, kernels are cleared and/or stopped for a clean slate
+        // on subsequent connections, without a manual intervention.
         let mut dma_manager = DmaManager::new();
-
-        // Reset the analyzer as well.
         let mut analyzer = Analyzer::new();
+        let mut kernelmgr = KernelManager::new();
 
+        cricon_select(RtioMaster::Drtio);
         drtioaux::reset(0);
         drtiosat_reset(false);
         drtiosat_reset_phy(false);
 
         while drtiosat_link_rx_up() {
             drtiosat_process_errors();
-            process_aux_packets(&mut dma_manager, &mut analyzer, &mut repeaters, &mut routing_table, &mut rank);
+            process_aux_packets(&mut dma_manager, &mut analyzer, 
+                &mut kernelmgr, &mut repeaters, &mut routing_table,
+                &mut rank, &mut router, &mut destination);
             for rep in repeaters.iter_mut() {
-                rep.service(&routing_table, rank);
+                rep.service(&routing_table, rank, destination, &mut router);
             }
             #[cfg(all(soc_platform = "kasli", hw_rev = "v2.0"))]
             {
@@ -650,6 +840,26 @@ pub extern fn main() -> i32 {
                     error!("aux packet error: {}", e);
                 }
             }
+            if let Some(status) = dma_manager.get_status() {
+                info!("playback done, error: {}, channel: {}, timestamp: {}", status.error, status.channel, status.timestamp);
+                router.route(drtioaux::Packet::DmaPlaybackStatus { 
+                    source: destination, destination: status.source, id: status.id,
+                    error: status.error, channel: status.channel, timestamp: status.timestamp 
+                }, &routing_table, rank, destination);
+            }
+
+            kernelmgr.process_kern_requests(&mut router, &routing_table, rank, destination, &mut dma_manager);
+            
+            #[cfg(has_drtio_routing)]
+            if let Some((repno, packet)) = router.get_downstream_packet() {
+                if let Err(e) = repeaters[repno].aux_send(&packet) {
+                    warn!("[REP#{}] Error when sending packet to satellite ({:?})", repno, e)
+                }
+            }
+
+            if let Some(packet) = router.get_upstream_packet() {
+                drtioaux::send(0, &packet).unwrap();
+            }
         }
 
         drtiosat_reset_phy(true);
@@ -658,11 +868,27 @@ pub extern fn main() -> i32 {
         info!("uplink is down, switching to local oscillator clock");
         #[cfg(has_si5324)]
         si5324::siphaser::select_recovered_clock(false).expect("failed to switch clocks");
+        #[cfg(has_wrpll)]
+        si549::wrpll::select_recovered_clock(false);
     }
 }
 
 #[cfg(soc_platform = "efc")]
 fn enable_error_led() {
+    let p3v3_fmc_en_pin;
+    let vadj_fmc_en_pin;
+
+    #[cfg(hw_rev = "v1.0")]
+    {
+        p3v3_fmc_en_pin = 0;
+        vadj_fmc_en_pin = 1;
+    }
+    #[cfg(hw_rev = "v1.1")]
+    {
+        p3v3_fmc_en_pin = 1;
+        vadj_fmc_en_pin = 7;
+    }
+
     let mut io_expander = board_misoc::io_expander::IoExpander::new().unwrap();
 
     // Keep LEDs enabled
@@ -671,10 +897,10 @@ fn enable_error_led() {
     io_expander.set(0, 7, true);
 
     // Keep VADJ and P3V3_FMC enabled
-    io_expander.set_oe(1, 1 << 0 | 1 << 1).unwrap();
+    io_expander.set_oe(1, 1 << p3v3_fmc_en_pin | 1 << vadj_fmc_en_pin).unwrap();
 
-    io_expander.set(1, 0, true);
-    io_expander.set(1, 1, true);
+    io_expander.set(1, p3v3_fmc_en_pin, true);
+    io_expander.set(1, vadj_fmc_en_pin, true);
 
     io_expander.service().unwrap();
 }
@@ -683,23 +909,33 @@ fn enable_error_led() {
 pub extern fn exception(_regs: *const u32) {
     let pc = mepc::read();
     let cause = mcause::read().cause();
-    
-    fn hexdump(addr: u32) {
-        let addr = (addr - addr % 4) as *const u32;
-        let mut ptr  = addr;
-        println!("@ {:08p}", ptr);
-        for _ in 0..4 {
-            print!("+{:04x}: ", ptr as usize - addr as usize);
-            print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
-            print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
-            print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
-            print!("{:08x}\n",  unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+    match cause {
+        mcause::Trap::Interrupt(_source) => {
+            #[cfg(has_wrpll)]
+            if irq::is_pending(csr::WRPLL_INTERRUPT) {
+                si549::wrpll::interrupt_handler();
+            }
+        },
+
+        mcause::Trap::Exception(e) => {
+            fn hexdump(addr: u32) {
+                let addr = (addr - addr % 4) as *const u32;
+                let mut ptr  = addr;
+                println!("@ {:08p}", ptr);
+                for _ in 0..4 {
+                    print!("+{:04x}: ", ptr as usize - addr as usize);
+                    print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+                    print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+                    print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+                    print!("{:08x}\n",  unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+                }
+            }
+
+            hexdump(u32::try_from(pc).unwrap());
+            let mtval = mtval::read();
+            panic!("exception {:?} at PC 0x{:x}, trap value 0x{:x}", e, u32::try_from(pc).unwrap(), mtval)
         }
     }
-
-    hexdump(u32::try_from(pc).unwrap());
-    let mtval = mtval::read();
-    panic!("exception {:?} at PC 0x{:x}, trap value 0x{:x}", cause, u32::try_from(pc).unwrap(), mtval)
 }
 
 #[no_mangle]

artiq/firmware/satman/repeater.rs

@@ -1,6 +1,7 @@
 use board_artiq::{drtioaux, drtio_routing};
 #[cfg(has_drtio_routing)]
 use board_misoc::{csr, clock};
+use routing::Router;
 
 #[cfg(has_drtio_routing)]
 fn rep_link_rx_up(repno: u8) -> bool {
@@ -48,7 +49,7 @@ impl Repeater {
         self.state == RepeaterState::Up
     }
 
-    pub fn service(&mut self, routing_table: &drtio_routing::RoutingTable, rank: u8) {
+    pub fn service(&mut self, routing_table: &drtio_routing::RoutingTable, rank: u8, self_destination: u8, router: &mut Router) {
         self.process_local_errors();
 
         match self.state {
@@ -106,7 +107,7 @@ impl Repeater {
                 }
             }
             RepeaterState::Up => {
-                self.process_unsolicited_aux();
+                self.process_unsolicited_aux(routing_table, rank, self_destination, router);
                 if !rep_link_rx_up(self.repno) {
                     info!("[REP#{}] link is down", self.repno);
                     self.state = RepeaterState::Down;
@@ -121,9 +122,10 @@ impl Repeater {
         }
     }
 
-    fn process_unsolicited_aux(&self) {
+    fn process_unsolicited_aux(&self, routing_table: &drtio_routing::RoutingTable, 
+        rank: u8, self_destination: u8, router: &mut Router) {
         match drtioaux::recv(self.auxno) {
-            Ok(Some(packet)) => warn!("[REP#{}] unsolicited aux packet: {:?}", self.repno, packet),
+            Ok(Some(packet)) => router.route(packet, routing_table, rank, self_destination),
             Ok(None) => (),
             Err(_) => warn!("[REP#{}] aux packet error", self.repno)
         }
@@ -180,15 +182,19 @@ impl Repeater {
     }
 
     pub fn aux_forward(&self, request: &drtioaux::Packet) -> Result<(), drtioaux::Error<!>> {
-        if self.state != RepeaterState::Up {
-            return Err(drtioaux::Error::LinkDown);
-        }
-        drtioaux::send(self.auxno, request).unwrap();
+        self.aux_send(request)?;
         let reply = self.recv_aux_timeout(200)?;
         drtioaux::send(0, &reply).unwrap();
         Ok(())
     }
 
+    pub fn aux_send(&self, request: &drtioaux::Packet) -> Result<(), drtioaux::Error<!>> {
+        if self.state != RepeaterState::Up {
+            return Err(drtioaux::Error::LinkDown);
+        }
+        drtioaux::send(self.auxno, request)
+    }
+
     pub fn sync_tsc(&self) -> Result<(), drtioaux::Error<!>> {
         if self.state != RepeaterState::Up {
             return Ok(());
@@ -199,7 +205,6 @@ impl Repeater {
             (csr::DRTIOREP[repno].set_time_write)(1);
             while (csr::DRTIOREP[repno].set_time_read)() == 1 {}
         }
-
         // TSCAck is the only aux packet that is sent spontaneously
         // by the satellite, in response to a TSC set on the RT link.
         let reply = self.recv_aux_timeout(10000)?;
@@ -275,7 +280,7 @@ pub struct Repeater {
 impl Repeater {
     pub fn new(_repno: u8) -> Repeater { Repeater::default() }
 
-    pub fn service(&self, _routing_table: &drtio_routing::RoutingTable, _rank: u8) { }
+    pub fn service(&self, _routing_table: &drtio_routing::RoutingTable, _rank: u8, _destination: u8, _router: &mut Router) { }
 
     pub fn sync_tsc(&self) -> Result<(), drtioaux::Error<!>> { Ok(()) }
 

artiq/firmware/satman/routing.rs

@@ -0,0 +1,169 @@
+use alloc::{vec::Vec, collections::vec_deque::VecDeque};
+use board_artiq::{drtioaux, drtio_routing};
+#[cfg(has_drtio_routing)]
+use board_misoc::csr;
+use core::cmp::min;
+use proto_artiq::drtioaux_proto::PayloadStatus;
+use SAT_PAYLOAD_MAX_SIZE;
+use MASTER_PAYLOAD_MAX_SIZE;
+
+/* represents data that has to be sent with the aux protocol */
+#[derive(Debug)]
+pub struct Sliceable {
+    it: usize,
+    data: Vec<u8>,
+    destination: u8
+}
+
+pub struct SliceMeta {
+    pub destination: u8,
+    pub len: u16,
+    pub status: PayloadStatus
+}
+
+macro_rules! get_slice_fn {
+    ( $name:tt, $size:expr ) => {
+        pub fn $name(&mut self, data_slice: &mut [u8; $size]) -> SliceMeta {
+            let first = self.it == 0;
+            let len = min($size, self.data.len() - self.it);
+            let last = self.it + len == self.data.len();
+            let status = PayloadStatus::from_status(first, last);
+            data_slice[..len].clone_from_slice(&self.data[self.it..self.it+len]);
+            self.it += len;
+    
+            SliceMeta {
+                destination: self.destination,
+                len: len as u16,
+                status: status
+            }
+        }
+    };
+}
+
+impl Sliceable {
+    pub fn new(destination: u8, data: Vec<u8>) -> Sliceable {
+        Sliceable {
+            it: 0,
+            data: data,
+            destination: destination
+        }
+    }
+
+    pub fn at_end(&self) -> bool {
+        self.it == self.data.len()
+    }
+
+    pub fn extend(&mut self, data: &[u8]) {
+        self.data.extend(data);
+    }
+
+    get_slice_fn!(get_slice_sat, SAT_PAYLOAD_MAX_SIZE);
+    get_slice_fn!(get_slice_master, MASTER_PAYLOAD_MAX_SIZE);
+}
+
+// Packets from downstream (further satellites) are received and routed appropriately.
+// they're passed as soon as possible downstream (within the subtree), or sent upstream,
+// which is notified about pending packets.
+// for rank 1 (connected to master) satellites, these packets are passed as an answer to DestinationStatusRequest;
+// for higher ranks, after getting a notification, it will transact with downstream to get the pending packets.
+
+// forward! macro is not deprecated, as routable packets are only these that can originate
+// from both master and satellite, e.g. DDMA and Subkernel.
+
+pub struct Router {
+    upstream_queue: VecDeque<drtioaux::Packet>, 
+    local_queue: VecDeque<drtioaux::Packet>,
+    #[cfg(has_drtio_routing)]
+    downstream_queue: VecDeque<(usize, drtioaux::Packet)>,
+}
+
+impl Router {
+    pub fn new() -> Router {
+        Router {
+            upstream_queue: VecDeque::new(),
+            local_queue: VecDeque::new(),
+            #[cfg(has_drtio_routing)]
+            downstream_queue: VecDeque::new(),
+        }
+    }
+
+    // called by local sources (DDMA, kernel) and by repeaters on receiving async data
+    // messages are always buffered for both upstream and downstream
+    pub fn route(&mut self, packet: drtioaux::Packet,
+        _routing_table: &drtio_routing::RoutingTable, _rank: u8,
+        self_destination: u8
+    ) {
+        let destination = packet.routable_destination();
+        #[cfg(has_drtio_routing)]
+        {
+            if let Some(destination) = destination {
+                let hop = _routing_table.0[destination as usize][_rank as usize] as usize;
+                if destination == self_destination {
+                    self.local_queue.push_back(packet);
+                } else if hop > 0 && hop < csr::DRTIOREP.len() {
+                    let repno = (hop - 1) as usize;
+                    self.downstream_queue.push_back((repno, packet));
+                } else {
+                    self.upstream_queue.push_back(packet);
+                }
+            } else {
+                error!("Received an unroutable packet: {:?}", packet);
+            }
+        }
+        #[cfg(not(has_drtio_routing))]
+        {
+            if destination == Some(self_destination) {
+                self.local_queue.push_back(packet);
+            } else {
+                self.upstream_queue.push_back(packet);
+            }
+        }
+    }
+
+    // Sends a packet to a required destination, routing if it's necessary
+    pub fn send(&mut self, packet: drtioaux::Packet,
+        _routing_table: &drtio_routing::RoutingTable,
+        _rank: u8, _destination: u8
+    ) -> Result<(), drtioaux::Error<!>> {
+        #[cfg(has_drtio_routing)]
+        {
+            let destination = packet.routable_destination();
+            if let Some(destination) = destination {
+                let hop = _routing_table.0[destination as usize][_rank as usize] as usize;
+                if destination == 0 {
+                    // response is needed immediately if master required it
+                    drtioaux::send(0, &packet)?;
+                } else if !(hop > 0 && hop < csr::DRTIOREP.len()) {
+                    // higher rank can wait
+                    self.upstream_queue.push_back(packet);
+                } else {
+                    let repno = (hop - 1) as usize;
+                    // transaction will occur at closest possible opportunity
+                    self.downstream_queue.push_back((repno, packet));
+                }
+                Ok(())
+            } else {
+                // packet not supported in routing, fallback - sent directly
+                drtioaux::send(0, &packet)
+            }
+        }
+        #[cfg(not(has_drtio_routing))]
+        {
+            drtioaux::send(0, &packet)
+        }
+    }
+
+    pub fn get_upstream_packet(&mut self) -> Option<drtioaux::Packet> {
+        let packet = self.upstream_queue.pop_front();
+        packet
+    }
+
+    #[cfg(has_drtio_routing)]
+    pub fn get_downstream_packet(&mut self) -> Option<(usize, drtioaux::Packet)> {
+        self.downstream_queue.pop_front()
+    }
+
+    pub fn get_local_packet(&mut self) -> Option<drtioaux::Packet> {
+        self.local_queue.pop_front()
+    }
+}

artiq/firmware/satman/satman.ld

@@ -1,78 +0,0 @@
-INCLUDE generated/output_format.ld
-INCLUDE generated/regions.ld
-ENTRY(_reset_handler)
-
-SECTIONS
-{
-    .vectors :
-    {
-        *(.vectors)
-    } > main_ram
-
-    .text :
-    {
-        *(.text .text.*)
-        . = ALIGN(0x40000);
-    } > main_ram
-
-    .eh_frame :
-    {
-        __eh_frame_start = .;
-        KEEP(*(.eh_frame))
-        __eh_frame_end = .;
-    } > main_ram
-
-    /* https://sourceware.org/bugzilla/show_bug.cgi?id=20475 */
-    .got :
-    {
-        PROVIDE(_GLOBAL_OFFSET_TABLE_ = .);
-        *(.got)
-    } > main_ram
-
-    .got.plt :
-    {
-        *(.got.plt)
-    } > main_ram
-
-    .rodata :
-    {
-        _frodata = .;
-        *(.rodata .rodata.*)
-        _erodata = .;
-    } > main_ram
-
-    .data :
-    {
-        *(.data .data.*)
-    } > main_ram
-
-    .sdata :
-    {
-        *(.sdata .sdata.*)
-    } > main_ram
-
-    .bss (NOLOAD) : ALIGN(4)
-    {
-        _fbss = .;
-        *(.sbss .sbss.* .bss .bss.*);
-        . = ALIGN(4);
-        _ebss = .;
-    } > main_ram
-
-    .stack (NOLOAD) : ALIGN(0x1000)
-    {
-        _sstack_guard = .;
-        . += 0x1000;
-        _estack = .;
-        . += 0x10000;
-        _fstack = . - 16;
-    } > main_ram
-
-    /* 64MB heap for alloc use */
-    .heap (NOLOAD) : ALIGN(16)
-    {
-        _fheap = .;
-        . = . + 0x4000000;
-        _eheap = .;
-    } > main_ram
-}

artiq/frontend/afws_client.py

@@ -146,7 +146,8 @@ class Client:
             print(error_msg)
             table = PrettyTable()
             table.field_names = ["Variant", "Expiry date"]
-            table.add_rows(variants)
+            for variant in variants:
+                table.add_row(variant)
             print(table)
             sys.exit(1)
         return variants[0][0]
@@ -244,10 +245,11 @@ def main():
                 sys.exit(1)
             zip_unarchive(contents, args.directory)
         elif args.action == "get_variants":
-            data = client.get_variants()
+            variants = client.get_variants()
             table = PrettyTable()
             table.field_names = ["Variant", "Expiry date"]
-            table.add_rows(data)        
+            for variant in variants:
+                table.add_row(variant)
             print(table)
         elif args.action == "get_json":
             if args.variant:

artiq/frontend/aqctl_coreanalyzer_proxy.py

@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+
+import argparse
+import asyncio
+import atexit
+import logging
+
+from sipyco.asyncio_tools import AsyncioServer, SignalHandler, atexit_register_coroutine
+from sipyco.pc_rpc import Server
+from sipyco import common_args
+
+from artiq.coredevice.comm_analyzer import get_analyzer_dump, ANALYZER_MAGIC
+
+
+logger = logging.getLogger(__name__)
+
+
+# simplified version of sipyco Broadcaster
+class ProxyServer(AsyncioServer):
+    def __init__(self, queue_limit=8):
+        AsyncioServer.__init__(self)
+        self._recipients = set()
+        self._queue_limit = queue_limit
+
+    async def _handle_connection_cr(self, reader, writer):
+        try:
+            writer.write(ANALYZER_MAGIC)
+            queue = asyncio.Queue(self._queue_limit)
+            self._recipients.add(queue)
+            try:
+                while True:
+                    dump = await queue.get()
+                    writer.write(dump)
+                    # raise exception on connection error
+                    await writer.drain()
+            finally:
+                self._recipients.remove(queue)
+        except (ConnectionResetError, ConnectionAbortedError, BrokenPipeError):
+            # receivers disconnecting are a normal occurence
+            pass
+        finally:
+            writer.close()
+
+    def distribute(self, dump):
+        for recipient in self._recipients:
+            recipient.put_nowait(dump)
+
+
+class ProxyControl:
+    def __init__(self, distribute_cb, core_addr, core_port=1382):
+        self.distribute_cb = distribute_cb
+        self.core_addr = core_addr
+        self.core_port = core_port
+
+    def ping(self):
+        return True
+
+    def trigger(self):
+        try:
+            dump = get_analyzer_dump(self.core_addr, self.core_port)
+            self.distribute_cb(dump)
+        except:
+            logger.warning("Trigger failed:", exc_info=True)
+            raise
+
+
+def get_argparser():
+    parser = argparse.ArgumentParser(
+        description="ARTIQ core analyzer proxy")
+    common_args.verbosity_args(parser)
+    common_args.simple_network_args(parser, [
+        ("proxy", "proxying", 1385),
+        ("control", "control", 1386)
+    ])
+    parser.add_argument("core_addr", metavar="CORE_ADDR",
+                        help="hostname or IP address of the core device")
+    return parser
+
+
+def main():
+    args = get_argparser().parse_args()
+    common_args.init_logger_from_args(args)
+
+    loop = asyncio.new_event_loop()
+    asyncio.set_event_loop(loop)
+    atexit.register(loop.close)
+
+    signal_handler = SignalHandler()
+    signal_handler.setup()
+    atexit.register(signal_handler.teardown)
+
+    bind_address = common_args.bind_address_from_args(args)
+
+    proxy_server = ProxyServer()
+    loop.run_until_complete(proxy_server.start(bind_address, args.port_proxy))
+    atexit_register_coroutine(proxy_server.stop, loop=loop)
+
+    controller = ProxyControl(proxy_server.distribute, args.core_addr)
+    server = Server({"coreanalyzer_proxy_control": controller}, None, True)
+    loop.run_until_complete(server.start(bind_address, args.port_control))
+    atexit_register_coroutine(server.stop, loop=loop)
+
+    _, pending = loop.run_until_complete(asyncio.wait(
+        [loop.create_task(signal_handler.wait_terminate()),
+         loop.create_task(server.wait_terminate())],
+        return_when=asyncio.FIRST_COMPLETED))
+    for task in pending:
+        task.cancel()
+
+
+if __name__ == "__main__":
+    main()

artiq/frontend/artiq_browser.py

@@ -81,7 +81,7 @@ class Browser(QtWidgets.QMainWindow):
         self.files.dataset_changed.connect(
             self.experiments.dataset_changed)
 
-        self.applets = applets.AppletsDock(self, dataset_sub, dataset_ctl, loop=loop)
+        self.applets = applets.AppletsDock(self, dataset_sub, dataset_ctl, self.experiments, loop=loop)
         smgr.register(self.applets)
         atexit_register_coroutine(self.applets.stop, loop=loop)
 

artiq/frontend/artiq_client.py

@@ -22,8 +22,10 @@ from sipyco.pc_rpc import Client
 from sipyco.sync_struct import Subscriber
 from sipyco.broadcast import Receiver
 from sipyco import common_args, pyon
+from sipyco.asyncio_tools import SignalHandler
 
-from artiq.tools import scale_from_metadata, short_format, parse_arguments
+from artiq.tools import (scale_from_metadata, short_format, parse_arguments,
+                         parse_devarg_override)
 from artiq import __version__ as artiq_version
 
 
@@ -68,6 +70,8 @@ def get_argparser():
     parser_add.add_argument("-r", "--revision", default=None,
                             help="use a specific repository revision "
                                  "(defaults to head, ignored without -R)")
+    parser_add.add_argument("--devarg-override", default="",
+                            help="specify device arguments to override")
     parser_add.add_argument("--content", default=False,
                             action="store_true",
                             help="submit by content")
@@ -109,11 +113,25 @@ def get_argparser():
         "del-dataset", help="delete a dataset")
     parser_del_dataset.add_argument("name", help="name of the dataset")
 
+    parser_supply_interactive = subparsers.add_parser(
+        "supply-interactive", help="supply interactive arguments")
+    parser_supply_interactive.add_argument(
+        "rid", metavar="RID", type=int, help="RID of target experiment")
+    parser_supply_interactive.add_argument(
+        "arguments", metavar="ARGUMENTS", nargs="*",
+        help="interactive arguments")
+
+    parser_cancel_interactive = subparsers.add_parser(
+        "cancel-interactive", help="cancel interactive arguments")
+    parser_cancel_interactive.add_argument(
+        "rid", metavar="RID", type=int, help="RID of target experiment")
+
     parser_show = subparsers.add_parser(
         "show", help="show schedule, log, devices or datasets")
     parser_show.add_argument(
         "what", metavar="WHAT",
-        choices=["schedule", "log", "ccb", "devices", "datasets"],
+        choices=["schedule", "log", "ccb", "devices", "datasets",
+                 "interactive-args"],
         help="select object to show: %(choices)s")
 
     subparsers.add_parser(
@@ -132,8 +150,7 @@ def get_argparser():
         "ls", help="list a directory on the master")
     parser_ls.add_argument("directory", default="", nargs="?")
 
-    subparsers.add_parser(
-        "terminate", help="terminate the ARTIQ master")
+    subparsers.add_parser("terminate", help="terminate the ARTIQ master")
 
     common_args.verbosity_args(parser)
     return parser
@@ -146,6 +163,7 @@ def _action_submit(remote, args):
         raise ValueError("Failed to parse run arguments") from err
 
     expid = {
+        "devarg_override": parse_devarg_override(args.devarg_override),
         "log_level": logging.WARNING + args.quiet*10 - args.verbose*10,
         "class_name": args.class_name,
         "arguments": arguments,
@@ -204,6 +222,15 @@ def _action_scan_devices(remote, args):
     remote.scan()
 
 
+def _action_supply_interactive(remote, args):
+    arguments = parse_arguments(args.arguments)
+    remote.supply(args.rid, arguments)
+
+
+def _action_cancel_interactive(remote, args):
+    remote.cancel(args.rid)
+
+
 def _action_scan_repository(remote, args):
     if getattr(args, "async"):
         remote.scan_repository_async(args.revision)
@@ -270,17 +297,34 @@ def _show_datasets(datasets):
     print(table)
 
 
+def _show_interactive_args(interactive_args):
+    clear_screen()
+    table = PrettyTable(["RID", "Title", "Key", "Type", "Group", "Tooltip"])
+    for rid, input_request in sorted(interactive_args.items(), key=itemgetter(0)):
+        title = input_request["title"]
+        for key, procdesc, group, tooltip in input_request["arglist_desc"]:
+            table.add_row([rid, title, key, procdesc["ty"], group, tooltip])
+    print(table)
+
+
 def _run_subscriber(host, port, subscriber):
     loop = asyncio.new_event_loop()
     asyncio.set_event_loop(loop)
     try:
-        loop.run_until_complete(subscriber.connect(host, port))
+        signal_handler = SignalHandler()
+        signal_handler.setup()
         try:
-            loop.run_until_complete(asyncio.wait_for(subscriber.receive_task,
-                                                     None))
-            print("Connection to master lost")
+            loop.run_until_complete(subscriber.connect(host, port))
+            try:
+                _, pending = loop.run_until_complete(asyncio.wait(
+                    [loop.create_task(signal_handler.wait_terminate()), subscriber.receive_task],
+                    return_when=asyncio.FIRST_COMPLETED))
+                for task in pending:
+                    task.cancel()
+            finally:
+                loop.run_until_complete(subscriber.close())
         finally:
-            loop.run_until_complete(subscriber.close())
+            signal_handler.teardown()
     finally:
         loop.close()
 
@@ -334,18 +378,22 @@ def main():
             _show_dict(args, "devices", _show_devices)
         elif args.what == "datasets":
             _show_dict(args, "datasets", _show_datasets)
+        elif args.what == "interactive-args":
+            _show_dict(args, "interactive_args", _show_interactive_args)
         else:
             raise ValueError
     else:
         port = 3251 if args.port is None else args.port
         target_name = {
-            "submit": "master_schedule",
-            "delete": "master_schedule",
-            "set_dataset": "master_dataset_db",
-            "del_dataset": "master_dataset_db",
-            "scan_devices": "master_device_db",
-            "scan_repository": "master_experiment_db",
-            "ls": "master_experiment_db",
+            "submit": "schedule",
+            "delete": "schedule",
+            "set_dataset": "dataset_db",
+            "del_dataset": "dataset_db",
+            "scan_devices": "device_db",
+            "supply_interactive": "interactive_arg_db",
+            "cancel_interactive": "interactive_arg_db",
+            "scan_repository": "experiment_db",
+            "ls": "experiment_db",
             "terminate": "master_management",
         }[action]
         remote = Client(args.server, port, target_name)

artiq/frontend/artiq_compile.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-import os, sys, logging, argparse
+import os, sys, io, tarfile, logging, argparse
 
 from sipyco import common_args
 
@@ -71,6 +71,5 @@ def main():
     finally:
         device_mgr.close_devices()
 
-
 if __name__ == "__main__":
     main()

artiq/frontend/artiq_dashboard.py

@@ -6,7 +6,6 @@ import atexit
 import importlib
 import os
 import logging
-import sys
 
 from PyQt5 import QtCore, QtGui, QtWidgets
 from qasync import QEventLoop
@@ -15,13 +14,15 @@ from sipyco.pc_rpc import AsyncioClient, Client
 from sipyco.broadcast import Receiver
 from sipyco import common_args
 from sipyco.asyncio_tools import atexit_register_coroutine
+from sipyco.sync_struct import Subscriber
 
 from artiq import __artiq_dir__ as artiq_dir, __version__ as artiq_version
 from artiq.tools import get_user_config_dir
 from artiq.gui.models import ModelSubscriber
 from artiq.gui import state, log
 from artiq.dashboard import (experiments, shortcuts, explorer,
-                             moninj, datasets, schedule, applets_ccb)
+                             moninj, datasets, schedule, applets_ccb,
+                             waveform, interactive_args)
 
 
 def get_argparser():
@@ -47,6 +48,15 @@ def get_argparser():
     parser.add_argument(
         "-p", "--load-plugin", dest="plugin_modules", action="append",
         help="Python module to load on startup")
+    parser.add_argument(
+        "--analyzer-proxy-timeout", default=5, type=float,
+        help="connection timeout to core analyzer proxy")
+    parser.add_argument(
+        "--analyzer-proxy-timer", default=5, type=float,
+        help="retry timer to core analyzer proxy")
+    parser.add_argument(
+        "--analyzer-proxy-timer-backoff", default=1.1, type=float,
+        help="retry timer backoff multiplier to core analyzer proxy")
     common_args.verbosity_args(parser)
     return parser
 
@@ -60,7 +70,7 @@ class MainWindow(QtWidgets.QMainWindow):
         self.setWindowTitle("ARTIQ Dashboard - {}".format(server))
 
         qfm = QtGui.QFontMetrics(self.font())
-        self.resize(140*qfm.averageCharWidth(), 38*qfm.lineSpacing())
+        self.resize(140 * qfm.averageCharWidth(), 38 * qfm.lineSpacing())
 
         self.exit_request = asyncio.Event()
 
@@ -85,11 +95,23 @@ class MdiArea(QtWidgets.QMdiArea):
         self.pixmap = QtGui.QPixmap(os.path.join(
             artiq_dir, "gui", "logo_ver.svg"))
 
+        self.setActivationOrder(self.ActivationHistoryOrder)
+
+        self.tile = QtWidgets.QShortcut(
+            QtGui.QKeySequence('Ctrl+Shift+T'), self)
+        self.tile.activated.connect(
+            lambda: self.tileSubWindows())
+
+        self.cascade = QtWidgets.QShortcut(
+            QtGui.QKeySequence('Ctrl+Shift+C'), self)
+        self.cascade.activated.connect(
+            lambda: self.cascadeSubWindows())
+
     def paintEvent(self, event):
         QtWidgets.QMdiArea.paintEvent(self, event)
         painter = QtGui.QPainter(self.viewport())
-        x = (self.width() - self.pixmap.width())//2
-        y = (self.height() - self.pixmap.height())//2
+        x = (self.width() - self.pixmap.width()) // 2
+        y = (self.height() - self.pixmap.height()) // 2
         painter.setOpacity(0.5)
         painter.drawPixmap(x, y, self.pixmap)
 
@@ -106,9 +128,9 @@ def main():
 
     if args.db_file is None:
         args.db_file = os.path.join(get_user_config_dir(),
-                           "artiq_dashboard_{server}_{port}.pyon".format(
-                            server=args.server.replace(":","."),
-                            port=args.port_notify))
+                                    "artiq_dashboard_{server}_{port}.pyon".format(
+                                    server=args.server.replace(":", "."),
+                                    port=args.port_notify))
 
     app = QtWidgets.QApplication(["ARTIQ Dashboard"])
     loop = QEventLoop(app)
@@ -118,10 +140,10 @@ def main():
 
     # create connections to master
     rpc_clients = dict()
-    for target in "schedule", "experiment_db", "dataset_db", "device_db":
+    for target in "schedule", "experiment_db", "dataset_db", "device_db", "interactive_arg_db":
         client = AsyncioClient()
         loop.run_until_complete(client.connect_rpc(
-            args.server, args.port_control, "master_" + target))
+            args.server, args.port_control, target))
         atexit.register(client.close_rpc)
         rpc_clients[target] = client
 
@@ -132,6 +154,7 @@ def main():
         master_management.close_rpc()
 
     disconnect_reported = False
+
     def report_disconnect():
         nonlocal disconnect_reported
         if not disconnect_reported:
@@ -143,9 +166,9 @@ def main():
     for notifier_name, modelf in (("explist", explorer.Model),
                                   ("explist_status", explorer.StatusUpdater),
                                   ("datasets", datasets.Model),
-                                  ("schedule", schedule.Model)):
-        subscriber = ModelSubscriber(notifier_name, modelf,
-            report_disconnect)
+                                  ("schedule", schedule.Model),
+                                  ("interactive_args", interactive_args.Model)):
+        subscriber = ModelSubscriber(notifier_name, modelf, report_disconnect)
         loop.run_until_complete(subscriber.connect(
             args.server, args.port_notify))
         atexit_register_coroutine(subscriber.close, loop=loop)
@@ -203,10 +226,22 @@ def main():
     smgr.register(d_applets)
     broadcast_clients["ccb"].notify_cbs.append(d_applets.ccb_notify)
 
-    d_ttl_dds = moninj.MonInj(rpc_clients["schedule"])
-    loop.run_until_complete(d_ttl_dds.start(args.server, args.port_notify))
+    d_ttl_dds = moninj.MonInj(rpc_clients["schedule"], main_window)
+    smgr.register(d_ttl_dds)
     atexit_register_coroutine(d_ttl_dds.stop, loop=loop)
 
+    d_waveform = waveform.WaveformDock(
+        args.analyzer_proxy_timeout,
+        args.analyzer_proxy_timer,
+        args.analyzer_proxy_timer_backoff
+    )
+    atexit_register_coroutine(d_waveform.stop, loop=loop)
+
+    d_interactive_args = interactive_args.InteractiveArgsDock(
+        sub_clients["interactive_args"],
+        rpc_clients["interactive_arg_db"]
+    )
+
     d_schedule = schedule.ScheduleDock(
         rpc_clients["schedule"], sub_clients["schedule"])
     smgr.register(d_schedule)
@@ -219,8 +254,8 @@ def main():
     # lay out docks
     right_docks = [
         d_explorer, d_shortcuts,
-        d_ttl_dds.ttl_dock, d_ttl_dds.dds_dock, d_ttl_dds.dac_dock,
-        d_datasets, d_applets
+        d_datasets, d_applets,
+        d_waveform, d_interactive_args
     ]
     main_window.addDockWidget(QtCore.Qt.RightDockWidgetArea, right_docks[0])
     for d1, d2 in zip(right_docks, right_docks[1:]):
@@ -234,18 +269,25 @@ def main():
         # QDockWidgets fail to be embedded.
         main_window.show()
     smgr.load()
+
+    def init_cbs(ddb):
+        d_ttl_dds.dm.init_ddb(ddb)
+        d_waveform.init_ddb(ddb)
+        return ddb
+    devices_sub = Subscriber("devices", init_cbs, [d_ttl_dds.dm.notify_ddb, d_waveform.notify_ddb])
+    loop.run_until_complete(devices_sub.connect(args.server, args.port_notify))
+    atexit_register_coroutine(devices_sub.close, loop=loop)
+
     smgr.start(loop=loop)
     atexit_register_coroutine(smgr.stop, loop=loop)
 
-    # work around for https://github.com/m-labs/artiq/issues/1307
-    d_ttl_dds.ttl_dock.show()
-    d_ttl_dds.dds_dock.show()
-
     # create first log dock if not already in state
     d_log0 = logmgr.first_log_dock()
     if d_log0 is not None:
         main_window.tabifyDockWidget(d_schedule, d_log0)
-
+    d_moninj0 = d_ttl_dds.first_moninj_dock()
+    if d_moninj0 is not None:
+        main_window.tabifyDockWidget(right_docks[-1], d_moninj0)
 
     if server_name is not None:
         server_description = server_name + " ({})".format(args.server)
@@ -257,5 +299,6 @@ def main():
     main_window.show()
     loop.run_until_complete(main_window.exit_request.wait())
 
+
 if __name__ == "__main__":
     main()

artiq/frontend/artiq_ddb_template.py

@@ -24,6 +24,27 @@ def get_cpu_target(description):
     else:
         raise NotImplementedError
 
+
+def get_num_leds(description):
+    drtio_role = description["drtio_role"]
+    target = description["target"]
+    hw_rev = description["hw_rev"]
+    kasli_board_leds = {
+        "v1.0": 4,
+        "v1.1": 6,
+        "v2.0": 3
+    }
+    if target == "kasli":
+        if hw_rev in ("v1.0", "v1.1") and drtio_role != "standalone":
+            # LEDs are used for DRTIO status on v1.0 and v1.1
+            return kasli_board_leds[hw_rev] - 3
+        return kasli_board_leds[hw_rev]
+    elif target == "kasli_soc":
+        return 2
+    else:
+        raise ValueError
+     
+
 def process_header(output, description):
     print(textwrap.dedent("""
         # Autogenerated for the {variant} variant
@@ -34,7 +55,13 @@ def process_header(output, description):
                 "type": "local",
                 "module": "artiq.coredevice.core",
                 "class": "Core",
-                "arguments": {{"host": core_addr, "ref_period": {ref_period}, "target": "{cpu_target}"}},
+                "arguments": {{
+                    "host": core_addr,
+                    "ref_period": {ref_period},
+                    "analyzer_proxy": "core_analyzer",
+                    "target": "{cpu_target}",
+                    "satellite_cpu_targets": {{}}
+                }},
             }},
             "core_log": {{
                 "type": "controller",
@@ -49,6 +76,13 @@ def process_header(output, description):
                 "port": 1384,
                 "command": "aqctl_moninj_proxy --port-proxy {{port_proxy}} --port-control {{port}} --bind {{bind}} " + core_addr
             }},
+            "core_analyzer": {{
+                "type": "controller",
+                "host": "::1",
+                "port_proxy": 1385,
+                "port": 1386,
+                "command": "aqctl_coreanalyzer_proxy --port-proxy {{port_proxy}} --port-control {{port}} --bind {{bind}} " + core_addr
+            }},
             "core_cache": {{
                 "type": "local",
                 "module": "artiq.coredevice.cache",
@@ -60,8 +94,6 @@ def process_header(output, description):
                 "class": "CoreDMA"
             }},
 
-            "satellite_cpu_targets": {{}},
-
             "i2c_switch0": {{
                 "type": "local",
                 "module": "artiq.coredevice.i2c",
@@ -179,6 +211,11 @@ class PeripheralManager:
         urukul_name = self.get_name("urukul")
         synchronization = peripheral["synchronization"]
         channel = count(0)
+        pll_en = peripheral["pll_en"]
+        clk_div = peripheral.get("clk_div")
+        if clk_div is None:
+            clk_div = 0 if pll_en else 1
+
         self.gen("""
             device_db["eeprom_{name}"] = {{
                 "type": "local",
@@ -245,7 +282,7 @@ class PeripheralManager:
             sync_device="\"ttl_{name}_sync\"".format(name=urukul_name) if synchronization else "None",
             refclk=peripheral.get("refclk", self.primary_description["rtio_frequency"]),
             clk_sel=peripheral["clk_sel"],
-            clk_div=peripheral["clk_div"])
+            clk_div=clk_div)
         dds = peripheral["dds"]
         pll_vco = peripheral.get("pll_vco")
         for i in range(4):
@@ -267,7 +304,7 @@ class PeripheralManager:
                     uchn=i,
                     sw=",\n        \"sw_device\": \"ttl_{name}_sw{uchn}\"".format(name=urukul_name, uchn=i) if len(peripheral["ports"]) > 1 else "",
                     pll_vco=",\n        \"pll_vco\": {}".format(pll_vco) if pll_vco is not None else "",
-                    pll_n=peripheral.get("pll_n", 32), pll_en=peripheral["pll_en"],
+                    pll_n=peripheral.get("pll_n", 32), pll_en=pll_en,
                     sync_delay_seed=",\n        \"sync_delay_seed\": \"eeprom_{}:{}\"".format(urukul_name, 64 + 4*i) if synchronization else "",
                     io_update_delay=",\n        \"io_update_delay\": \"eeprom_{}:{}\"".format(urukul_name, 64 + 4*i) if synchronization else "")
             elif dds == "ad9912":
@@ -288,7 +325,7 @@ class PeripheralManager:
                     uchn=i,
                     sw=",\n        \"sw_device\": \"ttl_{name}_sw{uchn}\"".format(name=urukul_name, uchn=i) if len(peripheral["ports"]) > 1 else "",
                     pll_vco=",\n        \"pll_vco\": {}".format(pll_vco) if pll_vco is not None else "",
-                    pll_n=peripheral.get("pll_n", 8), pll_en=peripheral["pll_en"])
+                    pll_n=peripheral.get("pll_n", 8), pll_en=pll_en)
             else:
                 raise ValueError
         return next(channel)
@@ -675,8 +712,8 @@ class PeripheralManager:
         processor = getattr(self, "process_"+str(peripheral["type"]))
         return processor(rtio_offset, peripheral)
 
-    def add_board_leds(self, rtio_offset, board_name=None):
-        for i in range(2):
+    def add_board_leds(self, rtio_offset, board_name=None, num_leds=2):
+        for i in range(num_leds):
             if board_name is None:
                 led_name = self.get_name("led")
             else:
@@ -690,7 +727,7 @@ class PeripheralManager:
                 }}""",
                 name=led_name,
                 channel=rtio_offset+i)
-        return 2
+        return num_leds
 
 
 def split_drtio_eem(peripherals):
@@ -719,9 +756,10 @@ def process(output, primary_description, satellites):
     for peripheral in local_peripherals:
         n_channels = pm.process(rtio_offset, peripheral)
         rtio_offset += n_channels
-    if drtio_role == "standalone":
-        n_channels = pm.add_board_leds(rtio_offset)
-        rtio_offset += n_channels
+
+    num_leds = get_num_leds(primary_description)
+    pm.add_board_leds(rtio_offset, num_leds=num_leds)
+    rtio_offset += num_leds
 
     for destination, description in satellites:
         if description["drtio_role"] != "satellite":
@@ -732,7 +770,7 @@ def process(output, primary_description, satellites):
         print(textwrap.dedent("""
             # DEST#{dest} peripherals
 
-            device_db["satellite_cpu_targets"][{dest}] = \"{target}\"""").format(
+            device_db["core"]["arguments"]["satellite_cpu_targets"][{dest}] = \"{target}\"""").format(
                 dest=destination,
                 target=get_cpu_target(description)),
             file=output)
@@ -740,12 +778,26 @@ def process(output, primary_description, satellites):
         for peripheral in peripherals:
             n_channels = pm.process(rtio_offset, peripheral)
             rtio_offset += n_channels
-    
-    for peripheral in drtio_peripherals:
+
+        num_leds = get_num_leds(description)
+        pm.add_board_leds(rtio_offset, num_leds=num_leds)
+        rtio_offset += num_leds
+
+    for i, peripheral in enumerate(drtio_peripherals):
+        if not("drtio_destination" in peripheral):
+            if primary_description["target"] == "kasli":
+                if primary_description["hw_rev"] in ("v1.0", "v1.1"):
+                    peripheral["drtio_destination"] = 3 + i
+                else:
+                    peripheral["drtio_destination"] = 4 + i
+            elif primary_description["target"] == "kasli_soc":
+                peripheral["drtio_destination"] = 5 + i
+            else:
+                raise NotImplementedError
         print(textwrap.dedent("""
             # DEST#{dest} peripherals
 
-            device_db["satellite_cpu_targets"][{dest}] = \"{target}\"""").format(
+            device_db["core"]["arguments"]["satellite_cpu_targets"][{dest}] = \"{target}\"""").format(
                 dest=peripheral["drtio_destination"],
                 target=get_cpu_target(peripheral)),
             file=output)

artiq/frontend/artiq_flash.py

@@ -261,12 +261,19 @@ def main():
             "storage":      ("spi0", 0x440000),
             "firmware":     ("spi0", 0x450000),
         },
-        "efc": {
+        "efc1v0": {
             "programmer":   partial(ProgrammerXC7, board="efc", proxy="bscan_spi_xc7a100t.bit"),
             "gateware":     ("spi0", 0x000000),
-            "bootloader":   ("spi0", 0x400000),
-            "storage":      ("spi0", 0x440000),
-            "firmware":     ("spi0", 0x450000),
+            "bootloader":   ("spi0", 0x600000),
+            "storage":      ("spi0", 0x640000),
+            "firmware":     ("spi0", 0x650000),
+        },
+        "efc1v1": {
+            "programmer":   partial(ProgrammerXC7, board="efc", proxy="bscan_spi_xc7a200t.bit"),
+            "gateware":     ("spi0", 0x000000),
+            "bootloader":   ("spi0", 0x600000),
+            "storage":      ("spi0", 0x640000),
+            "firmware":     ("spi0", 0x650000),
         },
         "kc705": {
             "programmer":   partial(ProgrammerXC7, board="kc705", proxy="bscan_spi_xc7k325t.bit"),

artiq/frontend/artiq_master.py

@@ -15,7 +15,8 @@ from sipyco.asyncio_tools import atexit_register_coroutine, SignalHandler
 
 from artiq import __version__ as artiq_version
 from artiq.master.log import log_args, init_log
-from artiq.master.databases import DeviceDB, DatasetDB
+from artiq.master.databases import (DeviceDB, DatasetDB,
+                                    InteractiveArgDB)
 from artiq.master.scheduler import Scheduler
 from artiq.master.rid_counter import RIDCounter
 from artiq.master.experiments import (FilesystemBackend, GitBackend,
@@ -57,10 +58,10 @@ def get_argparser():
     log_args(parser)
 
     parser.add_argument("--name",
-        help="friendly name, displayed in dashboards "
-             "to identify master instead of server address")
-    parser.add_argument("--log-submissions", default=None, 
-        help="set the filename to create the experiment subimission")
+                        help="friendly name, displayed in dashboards "
+                             "to identify master instead of server address")
+    parser.add_argument("--log-submissions", default=None,
+                        help="log experiment submissions to specified file")
 
     return parser
 
@@ -81,8 +82,7 @@ def main():
         bind, args.port_broadcast))
     atexit_register_coroutine(server_broadcast.stop, loop=loop)
 
-    log_forwarder.callback = (lambda msg:
-        server_broadcast.broadcast("log", msg))
+    log_forwarder.callback = lambda msg: server_broadcast.broadcast("log", msg)
     def ccb_issue(service, *args, **kwargs):
         msg = {
             "service": service,
@@ -96,6 +96,7 @@ def main():
     atexit.register(dataset_db.close_db)
     dataset_db.start(loop=loop)
     atexit_register_coroutine(dataset_db.stop, loop=loop)
+    interactive_arg_db = InteractiveArgDB()
     worker_handlers = dict()
 
     if args.git:
@@ -106,15 +107,22 @@ def main():
         repo_backend, worker_handlers, args.experiment_subdir)
     atexit.register(experiment_db.close)
 
-    scheduler = Scheduler(RIDCounter(), worker_handlers, experiment_db, args.log_submissions)
+    scheduler = Scheduler(RIDCounter(), worker_handlers, experiment_db,
+                          args.log_submissions)
     scheduler.start(loop=loop)
     atexit_register_coroutine(scheduler.stop, loop=loop)
 
+    # Python doesn't allow writing attributes to bound methods.
+    def get_interactive_arguments(*args, **kwargs):
+        return interactive_arg_db.get(*args, **kwargs)
+    get_interactive_arguments._worker_pass_rid = True
     worker_handlers.update({
         "get_device_db": device_db.get_device_db,
         "get_device": device_db.get,
         "get_dataset": dataset_db.get,
+        "get_dataset_metadata": dataset_db.get_metadata,
         "update_dataset": dataset_db.update,
+        "get_interactive_arguments": get_interactive_arguments,
         "scheduler_submit": scheduler.submit,
         "scheduler_delete": scheduler.delete,
         "scheduler_request_termination": scheduler.request_termination,
@@ -133,10 +141,11 @@ def main():
 
     server_control = RPCServer({
         "master_management": master_management,
-        "master_device_db": device_db,
-        "master_dataset_db": dataset_db,
-        "master_schedule": scheduler,
-        "master_experiment_db": experiment_db,
+        "device_db": device_db,
+        "dataset_db": dataset_db,
+        "interactive_arg_db": interactive_arg_db,
+        "schedule": scheduler,
+        "experiment_db": experiment_db,
     }, allow_parallel=True)
     loop.run_until_complete(server_control.start(
         bind, args.port_control))
@@ -146,8 +155,9 @@ def main():
         "schedule": scheduler.notifier,
         "devices": device_db.data,
         "datasets": dataset_db.data,
+        "interactive_args": interactive_arg_db.pending,
         "explist": experiment_db.explist,
-        "explist_status": experiment_db.status
+        "explist_status": experiment_db.status,
     })
     loop.run_until_complete(server_notify.start(
         bind, args.port_notify))

artiq/frontend/artiq_run.py

@@ -4,13 +4,14 @@
 
 import argparse
 import sys
+import tarfile
 from operator import itemgetter
 import logging
 from collections import defaultdict
 
 import h5py
 
-from sipyco import common_args
+from sipyco import common_args, pyon
 
 from artiq import __version__ as artiq_version
 from artiq.language.environment import EnvExperiment, ProcessArgumentManager
@@ -42,6 +43,20 @@ class ELFRunner(FileRunner):
             return f.read()
 
 
+class TARRunner(FileRunner):
+    def compile(self):
+        with tarfile.open(self.file, "r:") as tar:
+            for entry in tar:
+                if entry.name == 'main.elf':
+                    main_lib = tar.extractfile(entry).read()
+                else:
+                    subkernel_name = entry.name.removesuffix(".elf")
+                    sid, dest = tuple(map(lambda x: int(x), subkernel_name.split(" ")))
+                    subkernel_lib = tar.extractfile(entry).read()
+                    self.core.comm.upload_subkernel(subkernel_lib, sid, dest)
+        return main_lib
+
+
 class DummyScheduler:
     def __init__(self):
         self.rid = 0
@@ -106,11 +121,33 @@ def get_argparser(with_file=True):
     return parser
 
 
+class ArgumentManager(ProcessArgumentManager):
+    def get_interactive(self, interactive_arglist, title):
+        print(title)
+        result = dict()
+        for key, processor, group, tooltip in interactive_arglist:
+            success = False
+            while not success:
+                user_input = input("{}:{} (group={}, tooltip={}): ".format(
+                    key, type(processor).__name__, group, tooltip))
+                try:
+                    user_input_deser = pyon.decode(user_input)
+                    value = processor.process(user_input_deser)
+                except:
+                    logger.error("failed to process user input, retrying",
+                                 exc_info=True)
+                else:
+                    success = True
+            result[key] = value
+        return result
+
+
 def _build_experiment(device_mgr, dataset_mgr, args):
     arguments = parse_arguments(args.arguments)
-    argument_mgr = ProcessArgumentManager(arguments)
+    argument_mgr = ArgumentManager(arguments)
     managers = (device_mgr, dataset_mgr, argument_mgr, {})
     if hasattr(args, "file"):
+        is_tar = tarfile.is_tarfile(args.file)
         is_elf = args.file.endswith(".elf")
         if is_elf:
             if args.arguments:
@@ -118,7 +155,9 @@ def _build_experiment(device_mgr, dataset_mgr, args):
             if args.class_name:
                 raise ValueError("class-name not supported "
                                  "for precompiled kernels")
-        if is_elf:
+        if is_tar:
+            return TARRunner(managers, file=args.file)
+        elif is_elf:
             return ELFRunner(managers, file=args.file)
         else:
             import_cache.install_hook()
@@ -152,6 +191,7 @@ def run(with_file=False):
             exp_inst = _build_experiment(device_mgr, dataset_mgr, args)
             exp_inst.prepare()
             exp_inst.run()
+            device_mgr.notify_run_end()
             exp_inst.analyze()
         except Exception as exn:
             if hasattr(exn, "artiq_core_exception"):

artiq/frontend/artiq_sinara_tester.py

@@ -14,7 +14,7 @@ from artiq.coredevice.ttl import TTLOut, TTLInOut
 from artiq.coredevice.urukul import CPLD as UrukulCPLD
 from artiq.coredevice.ad9910 import AD9910, SyncDataEeprom
 from artiq.coredevice.mirny import Mirny
-from artiq.coredevice.almazny import AlmaznyLegacy
+from artiq.coredevice.almazny import AlmaznyLegacy, AlmaznyChannel
 from artiq.coredevice.adf5356 import ADF5356
 from artiq.coredevice.sampler import Sampler
 from artiq.coredevice.zotino import Zotino
@@ -22,7 +22,14 @@ from artiq.coredevice.fastino import Fastino
 from artiq.coredevice.phaser import Phaser, PHASER_GW_BASE, PHASER_GW_MIQRO
 from artiq.coredevice.grabber import Grabber
 from artiq.coredevice.suservo import SUServo, Channel as SUServoChannel
-
+from artiq.coredevice.shuttler import (
+    Config as ShuttlerConfig,
+    Trigger as ShuttlerTrigger,
+    DCBias as ShuttlerDCBias,
+    DDS as ShuttlerDDS,
+    Relay as ShuttlerRelay,
+    ADC as ShuttlerADC,
+    shuttler_volt_to_mu)
 from artiq.master.databases import DeviceDB
 from artiq.master.worker_db import DeviceManager
 
@@ -78,7 +85,9 @@ class SinaraTester(EnvExperiment):
         self.mirnies = dict()
         self.suservos = dict()
         self.suschannels = dict()
+        self.legacy_almaznys = dict()
         self.almaznys = dict()
+        self.shuttler = dict()
 
         ddb = self.get_device_db()
         for name, desc in ddb.items():
@@ -117,7 +126,20 @@ class SinaraTester(EnvExperiment):
                 elif (module, cls) == ("artiq.coredevice.suservo", "Channel"):
                     self.suschannels[name] = self.get_device(name)
                 elif (module, cls) == ("artiq.coredevice.almazny", "AlmaznyLegacy"):
+                    self.legacy_almaznys[name] = self.get_device(name)
+                elif (module, cls) == ("artiq.coredevice.almazny", "AlmaznyChannel"):
                     self.almaznys[name] = self.get_device(name)
+                elif (module, cls) == ("artiq.coredevice.shuttler", "Config"):
+                    shuttler_name  = name.replace("_config", "")
+                    self.shuttler[shuttler_name] = ({
+                        "config": self.get_device(name),
+                        "trigger": self.get_device("{}_trigger".format(shuttler_name)),
+                        "leds": [self.get_device("{}_led{}".format(shuttler_name, i)) for i in range(2)],
+                        "dcbias": [self.get_device("{}_dcbias{}".format(shuttler_name, i)) for i in range(16)],
+                        "dds": [self.get_device("{}_dds{}".format(shuttler_name, i)) for i in range(16)],
+                        "relay": self.get_device("{}_relay".format(shuttler_name)),
+                        "adc": self.get_device("{}_adc".format(shuttler_name)),
+                    })
 
         # Remove Urukul, Sampler, Zotino and Mirny control signals
         # from TTL outs (tested separately) and remove Urukuls covered by
@@ -166,6 +188,7 @@ class SinaraTester(EnvExperiment):
         self.mirnies = sorted(self.mirnies.items(), key=lambda x: (x[1].cpld.bus.channel, x[1].channel))
         self.suservos = sorted(self.suservos.items(), key=lambda x: x[1].channel)
         self.suschannels = sorted(self.suschannels.items(), key=lambda x: x[1].channel)
+        self.shuttler = sorted(self.shuttler.items(), key=lambda x: x[1]["leds"][0].channel)
 
     @kernel
     def test_led(self, led: TTLOut):
@@ -377,67 +400,111 @@ class SinaraTester(EnvExperiment):
                 channel.pulse(100.*ms)
                 self.core.delay(100.*ms)
     @kernel
-    def init_almazny(self, almazny: AlmaznyLegacy):
+    def init_legacy_almazny(self, almazny: AlmaznyLegacy):
         self.core.break_realtime()
         almazny.init()
         almazny.output_toggle(True)
 
     @kernel
-    def almazny_set_attenuators_mu(self, almazny: AlmaznyLegacy, ch: int32, atts: int32):
+    def legacy_almazny_set_attenuators_mu(self, almazny: AlmaznyLegacy, ch: int32, atts: int32):
         self.core.break_realtime()
         almazny.set_att_mu(ch, atts)
 
     @kernel
-    def almazny_set_attenuators(self, almazny: AlmaznyLegacy, ch: int32, atts: float):
-        self.core.break_realtime()
-        almazny.set_att(ch, atts)
-
+    def legacy_almazny_att_test(self, almazny: AlmaznyLegacy):
+        # change attenuation bit by bit over time for all channels
+        att_mu = 0
+        while not is_enter_pressed():
+            self.core.break_realtime()
+            t = now_mu() - self.core.seconds_to_mu(0.5)
+            while self.core.get_rtio_counter_mu() < t:
+                pass
+            for ch in range(4):
+                almazny.set_att_mu(ch, att_mu)
+            self.core.delay(250.*ms)
+            if att_mu == 0:
+                att_mu = 1
+            else:
+                att_mu = (att_mu << 1) & 0x3F
+    
     @kernel
-    def almazny_toggle_output(self, almazny: AlmaznyLegacy, rf_on: bool):
+    def legacy_almazny_toggle_output(self, almazny: AlmaznyLegacy, rf_on: bool):
         self.core.break_realtime()
         almazny.output_toggle(rf_on)
 
-    def test_almaznys(self):
-        print("*** Testing Almaznys.")
-        for name, almazny in sorted(self.almaznys.items(), key=lambda x: x[0]):
+    def test_legacy_almaznys(self):
+        print("*** Testing legacy Almaznys (v1.1 or older).")
+        for name, almazny in sorted(self.legacy_almaznys.items(), key=lambda x: x[0]):
             print(name + "...")
             print("Initializing Mirny CPLDs...")
             for name, cpld in sorted(self.mirny_cplds.items(), key=lambda x: x[0]):
                 print(name + "...")
                 self.init_mirny(cpld)
             print("...done")
-
             print("Testing attenuators. Frequencies:")
             for card_n, channels in enumerate(chunker(self.mirnies, 4)):
                 for channel_n, (channel_name, channel_dev) in enumerate(channels):
                     frequency = 2000. + card_n * 250 + channel_n * 50
                     print("{}\t{}MHz".format(channel_name, frequency*2))
                     self.setup_mirny(channel_dev, frequency)
-                    print("{} info: {}".format(channel_name, channel_dev.info()))
-            self.init_almazny(almazny)
-            print("RF ON, all attenuators ON. Press ENTER when done.")
-            for i in range(4):
-                self.almazny_set_attenuators_mu(almazny, i, 63)
-            input()
-            print("RF ON, half power attenuators ON. Press ENTER when done.")
-            for i in range(4):
-                self.almazny_set_attenuators(almazny, i, 15.5)
-            input()
-            print("RF ON, all attenuators OFF. Press ENTER when done.")
-            for i in range(4):
-                self.almazny_set_attenuators(almazny, i, 0.)
-            input()
+            self.init_legacy_almazny(almazny)
             print("SR outputs are OFF. Press ENTER when done.")
-            self.almazny_toggle_output(almazny, False)
-            input()
-            print("RF ON, all attenuators are ON. Press ENTER when done.")
-            for i in range(4):
-                self.almazny_set_attenuators(almazny, i, 31.5)
-            self.almazny_toggle_output(almazny, True)
-            input()
-            print("RF OFF. Press ENTER when done.")
-            self.almazny_toggle_output(almazny, False)
+            self.legacy_almazny_toggle_output(almazny, False)
             input()
+            print("RF ON, attenuators are tested. Press ENTER when done.")
+            self.legacy_almazny_toggle_output(almazny, True)
+            self.legacy_almazny_att_test(almazny)
+            self.legacy_almazny_toggle_output(almazny, False)
+
+    @kernel
+    def almazny_led_wave(self, almaznys: list[AlmaznyChannel]):
+        while not is_enter_pressed():
+            self.core.break_realtime()
+            # do not fill the FIFOs too much to avoid long response times
+            t = now_mu() - self.core.seconds_to_mu(0.2)
+            while self.core.get_rtio_counter_mu() < t:
+                pass
+            for ch in almaznys:
+                ch.set(31.5, False, True)
+                self.core.delay(100*ms)
+                ch.set(31.5, False, False)
+    
+    @kernel
+    def almazny_att_test(self, almaznys: list[AlmaznyChannel]):
+        rf_en = 1
+        led = 1
+        att_mu = 0
+        while not is_enter_pressed():
+            self.core.break_realtime()
+            t = now_mu() - self.core.seconds_to_mu(0.2)
+            while self.core.get_rtio_counter_mu() < t:
+                pass
+            setting = led << 7 | rf_en << 6 | (att_mu & 0x3F)
+            for ch in almaznys:
+                ch.set_mu(setting)
+            self.core.delay(250.*ms)
+            if att_mu == 0:
+                att_mu = 1
+            else:
+                att_mu = (att_mu << 1) & 0x3F
+
+    def test_almaznys(self):
+        print("*** Testing Almaznys (v1.2+).")
+        print("Initializing Mirny CPLDs...")
+        for name, cpld in sorted(self.mirny_cplds.items(), key=lambda x: x[0]):
+            print(name + "...")
+            self.init_mirny(cpld)
+        print("...done")
+        print("Frequencies:")
+        for card_n, channels in enumerate(chunker(self.mirnies, 4)):
+            for channel_n, (channel_name, channel_dev) in enumerate(channels):
+                frequency = 2000 + card_n * 250 + channel_n * 50
+                print("{}\t{}MHz".format(channel_name, frequency*2))
+                self.setup_mirny(channel_dev, frequency)
+        print("RF ON, attenuators are tested. Press ENTER when done.")
+        self.almazny_att_test([ch for _, ch in self.almaznys.items()])
+        print("RF OFF, testing LEDs. Press ENTER when done.")
+        self.almazny_led_wave([ch for _, ch in self.almaznys.items()])
 
     def test_mirnies(self):
         print("*** Testing Mirny PLLs.")
@@ -768,6 +835,124 @@ class SinaraTester(EnvExperiment):
         print("Press ENTER when done.")
         input()
 
+    @kernel
+    def setup_shuttler_init(self, relay: ShuttlerRelay, adc: ShuttlerADC, dcbias: ShuttlerDCBias, 
+                            dds: ShuttlerDDS, trigger: TTLOut, config: ShuttlerConfig):
+        self.core.break_realtime()
+        # Reset Shuttler Output Relay
+        relay.init()
+        delay_mu(int64(self.core.ref_multiplier))
+
+        relay.enable(0x0000)
+        delay_mu(int64(self.core.ref_multiplier))
+
+        # Setup ADC and and Calibration
+        delay_mu(int64(self.core.ref_multiplier))
+        adc.power_up()
+
+        delay_mu(int64(self.core.ref_multiplier))
+        if adc.read_id() >> 4 != 0x038d:
+            print("Remote AFE Board's ADC is not found. Check Remote AFE Board's Cables Connections")
+            assert adc.read_id() >> 4 == 0x038d
+
+        delay_mu(int64(self.core.ref_multiplier))
+        adc.calibrate(dcbias, trigger, config)
+
+        #Reset Shuttler DAC Output
+        for ch in range(16):
+            self.setup_shuttler_set_output(dcbias, dds, trigger, ch, 0.0)
+
+    @kernel 
+    def set_shuttler_relay(self, relay: ShuttlerRelay, val: int32):
+        self.core.break_realtime()
+        relay.enable(val)
+
+    # NAC3TODO https://git.m-labs.hk/M-Labs/nac3/issues/101
+    @kernel
+    def get_shuttler_output_voltage(self, adc: ShuttlerADC, ch: int32) -> float:
+        self.core.break_realtime()
+        return adc.read_ch(ch)
+
+    @kernel
+    def setup_shuttler_set_output(self, dcbias: ShuttlerDCBias, dds: ShuttlerDDS, trigger: ShuttlerTrigger, ch: int32, volt: float):
+        self.core.break_realtime()
+        dcbias[ch].set_waveform(
+            a0=shuttler_volt_to_mu(volt),
+            a1=0,
+            a2=0,
+            a3=0,
+        )
+        delay_mu(int64(self.core.ref_multiplier))
+
+        dds[ch].set_waveform(
+            b0=0,
+            b1=0,
+            b2=0,
+            b3=0,
+            c0=0,
+            c1=0,
+            c2=0,
+        )
+        delay_mu(int64(self.core.ref_multiplier))
+
+        trigger.trigger(1 << ch)
+        delay_mu(int64(self.core.ref_multiplier))
+
+    @kernel
+    def shuttler_relay_led_wave(self, relay: ShuttlerRelay):
+        while not is_enter_pressed():
+            self.core.break_realtime()
+            # do not fill the FIFOs too much to avoid long response times
+            t = now_mu() - self.core.seconds_to_mu(.2)
+            while self.core.get_rtio_counter_mu() < t:
+                pass
+            for ch in range(16):
+                relay.enable(1 << ch)
+                self.core.delay(100.*ms)
+            relay.enable(0x0000)
+            self.core.delay(100.*ms)
+
+    def test_shuttler(self):
+        print("*** Testing Shuttler.")
+
+        for card_n, (card_name, card_dev) in enumerate(self.shuttler):
+            print("Testing: ", card_name)
+
+            output_voltage = 0.0
+
+            self.setup_shuttler_init(card_dev["relay"], card_dev["adc"], card_dev["dcbias"], card_dev["dds"], card_dev["trigger"], card_dev["config"])
+            
+            print("Check Remote AFE Board Relay LED Indicators.")
+            print("Press Enter to Continue.")
+            self.shuttler_relay_led_wave(card_dev["relay"])
+
+            self.set_shuttler_relay(card_dev["relay"], 0xFFFF)
+            
+            passed = True
+            adc_readings = []
+            volt_set = [(-1)**i*(2.*card_n + .1*(i//2 + 1)) for i in range(16)]
+
+            print("Testing Shuttler DAC")
+            print("Voltages:", " ".join(["{:.1f}".format(x) for x in volt_set]))
+
+            for ch, volt in enumerate(volt_set):
+                self.setup_shuttler_set_output(card_dev["dcbias"], card_dev["dds"], card_dev["trigger"], ch, volt)
+                output_voltage = self.get_shuttler_output_voltage(card_dev["adc"], ch)
+                if (abs(volt) - abs(output_voltage)) > 0.1:
+                    passed = False
+                adc_readings.append(output_voltage)
+
+            print("Press Enter to Continue.")
+            input()
+            self.set_shuttler_relay(card_dev["relay"], 0x0000)
+
+            if passed:
+                print("PASSED")
+            else:
+                print("FAILED")
+                print("Shuttler Remote AFE Board ADC has abnormal readings.")
+                print(f"ADC Readings:", " ".join(["{:.2f}".format(x) for x in adc_readings]))
+               
     def run(self, tests):
         print("****** Sinara system tester ******")
         print("")
@@ -825,6 +1010,7 @@ def main():
         experiment = SinaraTester((device_mgr, None, None, None))
         experiment.prepare()
         experiment.run(tests)
+        device_mgr.notify_run_end()
         experiment.analyze()
     finally:
         device_mgr.close_devices()

artiq/gateware/drtio/aux_controller.py

@@ -10,6 +10,7 @@ from misoc.interconnect import wishbone
 
 
 max_packet = 1024
+aux_buffer_count = 8
 
 
 class Transmitter(Module, AutoCSR):
@@ -95,13 +96,13 @@ class Transmitter(Module, AutoCSR):
 
 class Receiver(Module, AutoCSR):
     def __init__(self, link_layer, min_mem_dw):
-        self.aux_rx_length = CSRStatus(bits_for(max_packet))
         self.aux_rx_present = CSR()
         self.aux_rx_error = CSR()
+        self.aux_read_pointer = CSR(log2_int(aux_buffer_count))
 
         ll_dw = len(link_layer.rx_aux_data)
         mem_dw = max(min_mem_dw, ll_dw)
-        self.specials.mem = Memory(mem_dw, max_packet//(mem_dw//8))
+        self.specials.mem = Memory(mem_dw, aux_buffer_count*max_packet//(mem_dw//8))
 
         converter = ClockDomainsRenamer("rtio_rx")(
             stream.Converter(ll_dw, mem_dw))
@@ -123,30 +124,45 @@ class Receiver(Module, AutoCSR):
         mem_port = self.mem.get_port(write_capable=True, clock_domain="rtio_rx")
         self.specials += mem_port
 
+        # write pointer represents where the gateware is
+        write_pointer = Signal(log2_int(aux_buffer_count))
+        write_pointer_sys = Signal.like(write_pointer)
+        # read pointer represents where CPU is
+        # write reaching read is an error, read reaching write is buffer clear
+        read_pointer = Signal.like(write_pointer)
+        read_pointer_rx = Signal.like(write_pointer)
+
+        read_pointer.attr.add("no_retiming")
+        write_pointer.attr.add("no_retiming")
+        signal_error = PulseSynchronizer("rtio_rx", "sys")
+
+        self.specials += [
+            MultiReg(read_pointer, read_pointer_rx, "rtio_rx"),
+            MultiReg(write_pointer, write_pointer_sys)
+        ]
+
         frame_counter_nbits = bits_for(max_packet) - log2_int(mem_dw//8)
         frame_counter = Signal(frame_counter_nbits)
+        # frame counter requires one more bit to represent overflow (bits_for)
+        # actual valid packet will be addressed with one bit less
+        packet_nbits = frame_counter_nbits - 1
         self.comb += [
-            mem_port.adr.eq(frame_counter),
+            mem_port.adr[:packet_nbits].eq(frame_counter),
+            # bits above the frame counter point to current frame
+            mem_port.adr[packet_nbits:].eq(write_pointer),
             mem_port.dat_w.eq(converter.source.data),
-            converter.source.ack.eq(1)
+            converter.source.ack.eq(1),
+            self.aux_read_pointer.w.eq(read_pointer)
         ]
 
-        frame_counter.attr.add("no_retiming")
-        frame_counter_sys = Signal(frame_counter_nbits)
-        self.specials += MultiReg(frame_counter, frame_counter_sys)
-        self.comb += self.aux_rx_length.status.eq(frame_counter_sys << log2_int(mem_dw//8))
-
-        signal_frame = PulseSynchronizer("rtio_rx", "sys")
-        frame_ack = PulseSynchronizer("sys", "rtio_rx")
-        signal_error = PulseSynchronizer("rtio_rx", "sys")
-        self.submodules += signal_frame, frame_ack, signal_error
+        self.submodules += signal_error
         self.sync += [
-            If(self.aux_rx_present.re, self.aux_rx_present.w.eq(0)),
-            If(signal_frame.o, self.aux_rx_present.w.eq(1)),
             If(self.aux_rx_error.re, self.aux_rx_error.w.eq(0)),
-            If(signal_error.o, self.aux_rx_error.w.eq(1))
+            If(signal_error.o, self.aux_rx_error.w.eq(1)),
+            self.aux_rx_present.w.eq(~(read_pointer == write_pointer_sys)),
+            If(self.aux_rx_present.re & self.aux_rx_present.w,
+                read_pointer.eq(read_pointer + 1)),
         ]
-        self.comb += frame_ack.i.eq(self.aux_rx_present.re)
 
         fsm = ClockDomainsRenamer("rtio_rx")(FSM(reset_state="IDLE"))
         self.submodules += fsm
@@ -171,7 +187,7 @@ class Receiver(Module, AutoCSR):
                     NextState("FRAME")
                 )
             ).Else(
-                NextValue(frame_counter, 0)
+                NextValue(frame_counter, 0),
             )
         )
         fsm.act("FRAME",
@@ -189,14 +205,12 @@ class Receiver(Module, AutoCSR):
             )
         )
         fsm.act("SIGNAL_FRAME",
-            signal_frame.i.eq(1),
-            NextState("WAIT_ACK"),
-            If(converter.source.stb, signal_error.i.eq(1))
-        )
-        fsm.act("WAIT_ACK",
-            If(frame_ack.o,
-                NextValue(frame_counter, 0), 
-                NextState("IDLE")
+            NextState("IDLE"),
+            If((write_pointer + 1) == read_pointer_rx,
+                # on full buffer, overwrite only current frame
+                signal_error.i.eq(1)
+            ).Else(
+                NextValue(write_pointer, write_pointer + 1)
             ),
             If(converter.source.stb, signal_error.i.eq(1))
         )
@@ -215,8 +229,8 @@ class DRTIOAuxController(Module):
         tx_sdram_if = wishbone.SRAM(self.transmitter.mem, read_only=False, data_width=dw)
         rx_sdram_if = wishbone.SRAM(self.receiver.mem, read_only=True, data_width=dw)
         decoder = wishbone.Decoder(self.bus,
-            [(lambda a: a[log2_int(max_packet)-wsb] == 0, tx_sdram_if.bus),
-             (lambda a: a[log2_int(max_packet)-wsb] == 1, rx_sdram_if.bus)],
+            [(lambda a: a[log2_int(max_packet*aux_buffer_count)-wsb] == 0, tx_sdram_if.bus),
+             (lambda a: a[log2_int(max_packet*aux_buffer_count)-wsb] == 1, rx_sdram_if.bus)],
             register=True)
         self.submodules += tx_sdram_if, rx_sdram_if, decoder
 

artiq/gateware/drtio/core.py

@@ -61,8 +61,8 @@ class SyncRTIO(Module):
         self.submodules.outputs = ClockDomainsRenamer("rio")(
             SED(channels, tsc.glbl_fine_ts_width,
                 lane_count=lane_count, fifo_depth=fifo_depth,
-                enable_spread=False, report_buffer_space=True,
-                interface=self.cri))
+                enable_spread=True, fifo_high_watermark=0.75,
+                report_buffer_space=True, interface=self.cri))
         self.comb += self.outputs.coarse_timestamp.eq(tsc.coarse_ts)
         self.sync += self.outputs.minimum_coarse_timestamp.eq(tsc.coarse_ts + 16)
 
@@ -136,7 +136,7 @@ class DRTIOSatellite(Module):
 
         self.sync += [
             If(self.tsc_loaded.re, self.tsc_loaded.w.eq(0)),
-            If(self.rt_packet.tsc_load, self.tsc_loaded.w.eq(1))
+            If(self.rt_packet.tsc_load, self.tsc_loaded.w.eq(1)),
         ]
 
         self.submodules.rt_errors = rt_errors_satellite.RTErrorsSatellite(

artiq/gateware/drtio/rt_controller_repeater.py

@@ -17,12 +17,11 @@ class RTController(Module, AutoCSR):
 
         self.sync += rt_packet.reset.eq(self.reset.storage)
 
-        set_time_stb = Signal()
         self.sync += [
-            If(rt_packet.set_time_stb, set_time_stb.eq(0)),
-            If(self.set_time.re, set_time_stb.eq(1))
+            If(rt_packet.set_time_ack, rt_packet.set_time_stb.eq(0)),
+            If(self.set_time.re, rt_packet.set_time_stb.eq(1))
         ]
-        self.comb += self.set_time.w.eq(set_time_stb)
+        self.comb += self.set_time.w.eq(rt_packet.set_time_stb)
 
         errors = [
             (rt_packet.err_unknown_packet_type, "rtio_rx", None, None),

artiq/gateware/drtio/transceiver/gtp_7series.py

@@ -18,7 +18,7 @@ class GTPSingle(Module):
 
         # # #
 
-        self.stable_clkin = Signal()
+        self.clk_path_ready = Signal()
         self.txenable = Signal()
         self.submodules.encoder = encoder = Encoder(2, True)
         self.submodules.decoders = decoders = [ClockDomainsRenamer("rtio_rx")(
@@ -40,7 +40,7 @@ class GTPSingle(Module):
         self.submodules += rx_init
 
         self.comb += [
-            tx_init.stable_clkin.eq(self.stable_clkin),
+            tx_init.clk_path_ready.eq(self.clk_path_ready),
             qpll_channel.reset.eq(tx_init.pllreset),
             tx_init.plllock.eq(qpll_channel.lock)
         ]
@@ -715,7 +715,7 @@ class GTP(Module, TransceiverInterface):
     def __init__(self, qpll_channel, data_pads, sys_clk_freq, rtio_clk_freq, master=0):
         self.nchannels = nchannels = len(data_pads)
         self.gtps = []
-
+        self.clk_path_ready = Signal()
         # # #
 
         channel_interfaces = []
@@ -736,7 +736,7 @@ class GTP(Module, TransceiverInterface):
         TransceiverInterface.__init__(self, channel_interfaces)
         for n, gtp in enumerate(self.gtps):
             self.comb += [
-                  gtp.stable_clkin.eq(self.stable_clkin.storage),
+                  gtp.clk_path_ready.eq(self.clk_path_ready),
                   gtp.txenable.eq(self.txenable.storage[n])
             ]
 

artiq/gateware/drtio/transceiver/gtp_7series_init.py

@@ -10,7 +10,7 @@ __all__ = ["GTPTXInit", "GTPRXInit"]
 
 class GTPTXInit(Module):
     def __init__(self, sys_clk_freq, mode="single"):
-        self.stable_clkin = Signal()
+        self.clk_path_ready = Signal()
         self.done = Signal()
         self.restart = Signal()
 
@@ -87,7 +87,7 @@ class GTPTXInit(Module):
         startup_fsm.act("PLL_RESET",
             self.pllreset.eq(1),
             pll_reset_timer.wait.eq(1),
-            If(pll_reset_timer.done & self.stable_clkin,
+            If(pll_reset_timer.done & self.clk_path_ready,
                 NextState("GTP_RESET")
             )
         )