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drtio: expose internal satellite CRI
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@ -1,2 +1,2 @@
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from artiq.gateware.drtio.core import DRTIOSatellite, DRTIOMaster
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from artiq.gateware.drtio.core import SyncRTIO, DRTIOSatellite, DRTIOMaster
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@ -5,6 +5,7 @@ from migen.genlib.resetsync import AsyncResetSynchronizer
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from migen.genlib.cdc import PulseSynchronizer
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from misoc.interconnect.csr import *
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from artiq.gateware.rtio import cri
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from artiq.gateware.rtio.sed.core import *
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from artiq.gateware.rtio.input_collector import *
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from artiq.gateware.drtio import (link_layer, aux_controller,
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@ -13,6 +14,11 @@ from artiq.gateware.drtio import (link_layer, aux_controller,
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from artiq.gateware.drtio.rx_synchronizer import GenericRXSynchronizer
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__all__ = ["ChannelInterface", "TransceiverInterface",
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"SyncRTIO",
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"DRTIOSatellite", "DRTIOMaster"]
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class ChannelInterface:
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def __init__(self, encoder, decoders):
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self.rx_ready = Signal()
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@ -30,12 +36,49 @@ class TransceiverInterface(AutoCSR):
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self.channels = channel_interfaces
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async_errors_layout = [
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("sequence_error", 1),
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("sequence_error_channel", 16),
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("collision", 1),
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("collision_channel", 16),
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("busy", 1),
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("busy_channel", 16)
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]
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class SyncRTIO(Module):
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def __init__(self, channels, fine_ts_width=3, lane_count=8, fifo_depth=128):
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self.cri = cri.Interface()
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self.async_errors = Record(async_errors_layout)
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self.coarse_ts = Signal(64 - fine_ts_width)
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self.comb += self.cri.counter.eq(self.coarse_ts << fine_ts_width)
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self.submodules.outputs = ClockDomainsRenamer("rio")(
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SED(channels, fine_ts_width, "sync",
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lane_count=lane_count, fifo_depth=fifo_depth,
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enable_spread=False, report_buffer_space=True,
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interface=self.cri))
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self.comb += self.outputs.coarse_timestamp.eq(self.coarse_ts)
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self.sync.rtio += self.outputs.minimum_coarse_timestamp.eq(self.coarse_ts + 16)
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self.submodules.inputs = ClockDomainsRenamer("rio")(
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InputCollector(channels, fine_ts_width, "sync",
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interface=self.cri))
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self.comb += self.inputs.coarse_timestamp.eq(self.coarse_ts)
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for attr, _ in async_errors_layout:
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self.comb += getattr(self.async_errors, attr).eq(getattr(self.outputs, attr))
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class DRTIOSatellite(Module):
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def __init__(self, chanif, channels, rx_synchronizer=None, fine_ts_width=3,
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lane_count=8, fifo_depth=128):
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def __init__(self, chanif, rx_synchronizer=None, fine_ts_width=3):
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self.reset = CSRStorage(reset=1)
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self.reset_phy = CSRStorage(reset=1)
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self.tsc_loaded = CSR()
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# master interface in the rtio domain
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self.cri = cri.Interface()
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self.async_errors = Record(async_errors_layout)
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self.clock_domains.cd_rio = ClockDomain()
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self.clock_domains.cd_rio_phy = ClockDomain()
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@ -81,18 +124,16 @@ class DRTIOSatellite(Module):
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)
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self.submodules.link_stats = link_layer.LinkLayerStats(link_layer_sync, "rtio")
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self.submodules.rt_packet = ClockDomainsRenamer("rtio")(
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rt_packet_satellite.RTPacketSatellite(link_layer_sync))
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rt_packet_satellite.RTPacketSatellite(link_layer_sync, interface=self.cri))
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self.comb += self.rt_packet.reset.eq(self.cd_rio.rst)
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coarse_ts = Signal(64 - fine_ts_width)
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self.coarse_ts = Signal(64 - fine_ts_width)
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self.sync.rtio += \
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If(self.rt_packet.tsc_load,
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coarse_ts.eq(self.rt_packet.tsc_load_value)
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self.coarse_ts.eq(self.rt_packet.tsc_load_value)
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).Else(
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coarse_ts.eq(coarse_ts + 1)
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self.coarse_ts.eq(self.coarse_ts + 1)
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)
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self.comb += self.rt_packet.cri.counter.eq(coarse_ts << fine_ts_width)
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self.coarse_ts = coarse_ts
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ps_tsc_load = PulseSynchronizer("rtio", "sys")
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self.submodules += ps_tsc_load
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@ -102,21 +143,8 @@ class DRTIOSatellite(Module):
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If(ps_tsc_load.o, self.tsc_loaded.w.eq(1))
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]
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self.submodules.outputs = ClockDomainsRenamer("rio")(
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SED(channels, fine_ts_width, "sync",
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lane_count=lane_count, fifo_depth=fifo_depth,
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enable_spread=False, report_buffer_space=True,
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interface=self.rt_packet.cri))
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self.comb += self.outputs.coarse_timestamp.eq(coarse_ts)
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self.sync.rtio += self.outputs.minimum_coarse_timestamp.eq(coarse_ts + 16)
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self.submodules.inputs = ClockDomainsRenamer("rio")(
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InputCollector(channels, fine_ts_width, "sync",
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interface=self.rt_packet.cri))
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self.comb += self.inputs.coarse_timestamp.eq(coarse_ts)
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self.submodules.rt_errors = rt_errors_satellite.RTErrorsSatellite(
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self.rt_packet, self.outputs)
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self.rt_packet, self.cri, self.async_errors)
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self.submodules.aux_controller = aux_controller.AuxController(
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self.link_layer)
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@ -7,7 +7,7 @@ from artiq.gateware.rtio.cdc import BlindTransfer
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class RTErrorsSatellite(Module, AutoCSR):
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def __init__(self, rt_packet, outputs):
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def __init__(self, rt_packet, cri, async_errors):
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self.protocol_error = CSR(4)
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self.underflow_channel = CSRStatus(16)
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self.underflow_timestamp_event = CSRStatus(64)
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@ -56,11 +56,11 @@ class RTErrorsSatellite(Module, AutoCSR):
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underflow_error_cri = Signal(16+64+64)
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underflow_error_csr = Signal(16+64+64)
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self.comb += [
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underflow.eq(outputs.cri.o_status[1]),
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overflow.eq(outputs.cri.o_status[0]),
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underflow_error_cri.eq(Cat(outputs.cri.chan_sel[:16],
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outputs.cri.timestamp,
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outputs.cri.counter)),
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underflow.eq(cri.o_status[1]),
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overflow.eq(cri.o_status[0]),
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underflow_error_cri.eq(Cat(cri.chan_sel[:16],
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cri.timestamp,
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cri.counter)),
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Cat(self.underflow_channel.status,
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self.underflow_timestamp_event.status,
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self.underflow_timestamp_counter.status).eq(underflow_error_csr)
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@ -73,10 +73,10 @@ class RTErrorsSatellite(Module, AutoCSR):
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)
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error_csr(self.rtio_error,
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(outputs.sequence_error, False,
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outputs.sequence_error_channel, self.sequence_error_channel.status),
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(outputs.collision, False,
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outputs.collision_channel, self.collision_channel.status),
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(outputs.busy, False,
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outputs.busy_channel, self.busy_channel.status)
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(async_errors.sequence_error, False,
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async_errors.sequence_error_channel, self.sequence_error_channel.status),
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(async_errors.collision, False,
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async_errors.collision_channel, self.collision_channel.status),
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(async_errors.busy, False,
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async_errors.busy_channel, self.busy_channel.status)
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)
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@ -8,7 +8,7 @@ from artiq.gateware.drtio.rt_serializer import *
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class RTPacketSatellite(Module):
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def __init__(self, link_layer):
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def __init__(self, link_layer, interface=None):
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self.reset = Signal()
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self.unknown_packet_type = Signal()
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@ -17,7 +17,9 @@ class RTPacketSatellite(Module):
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self.tsc_load = Signal()
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self.tsc_load_value = Signal(64)
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self.cri = cri.Interface()
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if interface is None:
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interface = cri.Interface()
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self.cri = interface
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# # #
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@ -67,12 +67,18 @@ class DUT(Module):
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rtio.Channel.from_phy(self.phy2),
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]
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self.submodules.satellite = DRTIOSatellite(
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self.transceivers.bob, rtio_channels, rx_synchronizer,
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lane_count=4, fifo_depth=8, fine_ts_width=0)
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self.transceivers.bob, rx_synchronizer, fine_ts_width=0)
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self.satellite.reset.storage.reset = 0
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self.satellite.reset.storage_full.reset = 0
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self.satellite.reset_phy.storage.reset = 0
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self.satellite.reset_phy.storage_full.reset = 0
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self.submodules.satellite_rtio = SyncRTIO(
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rtio_channels, fine_ts_width=0, lane_count=4, fifo_depth=8)
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self.comb += [
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self.satellite_rtio.coarse_ts.eq(self.satellite.coarse_ts),
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self.satellite.cri.connect(self.satellite_rtio.cri),
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self.satellite.async_errors.eq(self.satellite_rtio.async_errors),
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]
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class OutputsTestbench:
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