forked from M-Labs/artiq
123 lines
4.2 KiB
Python
123 lines
4.2 KiB
Python
import os, sys
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from pythonparser import diagnostic
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from artiq import __artiq_dir__ as artiq_dir
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from artiq.language.core import *
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from artiq.language.types import *
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from artiq.language.units import *
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from artiq.compiler.module import Module
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from artiq.compiler.embedding import Stitcher
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from artiq.compiler.targets import OR1KTarget
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# Import for side effects (creating the exception classes).
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from artiq.coredevice import exceptions
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def _render_diagnostic(diagnostic, colored):
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def shorten_path(path):
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return path.replace(artiq_dir, "<artiq>")
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lines = [shorten_path(path) for path in diagnostic.render(colored=colored)]
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return "\n".join(lines)
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colors_supported = os.name == "posix"
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class _DiagnosticEngine(diagnostic.Engine):
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def render_diagnostic(self, diagnostic):
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sys.stderr.write(_render_diagnostic(diagnostic, colored=colors_supported) + "\n")
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class CompileError(Exception):
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def __init__(self, diagnostic):
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self.diagnostic = diagnostic
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def __str__(self):
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# Prepend a newline so that the message shows up on after
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# exception class name printed by Python.
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return "\n" + _render_diagnostic(self.diagnostic, colored=colors_supported)
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@syscall
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def rtio_get_counter() -> TInt64:
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raise NotImplementedError("syscall not simulated")
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class Core:
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"""Core device driver.
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:param ref_period: period of the reference clock for the RTIO subsystem.
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On platforms that use clock multiplication and SERDES-based PHYs,
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this is the period after multiplication. For example, with a RTIO core
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clocked at 125MHz and a SERDES multiplication factor of 8, the
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reference period is 1ns.
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The time machine unit is equal to this period.
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:param external_clock: whether the core device should switch to its
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external RTIO clock input instead of using its internal oscillator.
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:param ref_multiplier: ratio between the RTIO fine timestamp frequency
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and the RTIO coarse timestamp frequency (e.g. SERDES multiplication
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factor).
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:param comm_device: name of the device used for communications.
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"""
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def __init__(self, dmgr, ref_period, external_clock=False,
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ref_multiplier=8, comm_device="comm"):
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self.ref_period = ref_period
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self.external_clock = external_clock
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self.ref_multiplier = ref_multiplier
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self.coarse_ref_period = ref_period*ref_multiplier
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self.comm = dmgr.get(comm_device)
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self.first_run = True
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self.dmgr = dmgr
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self.core = self
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self.comm.core = self
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def compile(self, function, args, kwargs, set_result=None, with_attr_writeback=True):
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try:
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engine = _DiagnosticEngine(all_errors_are_fatal=True)
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stitcher = Stitcher(engine=engine, core=self, dmgr=self.dmgr)
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stitcher.stitch_call(function, args, kwargs, set_result)
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stitcher.finalize()
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module = Module(stitcher, ref_period=self.ref_period)
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target = OR1KTarget()
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library = target.compile_and_link([module])
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stripped_library = target.strip(library)
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return stitcher.object_map, stripped_library, \
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lambda addresses: target.symbolize(library, addresses)
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except diagnostic.Error as error:
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raise CompileError(error.diagnostic) from error
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def run(self, function, args, kwargs):
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result = None
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def set_result(new_result):
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nonlocal result
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result = new_result
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object_map, kernel_library, symbolizer = self.compile(function, args, kwargs, set_result)
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if self.first_run:
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self.comm.check_ident()
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self.comm.switch_clock(self.external_clock)
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self.first_run = False
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self.comm.load(kernel_library)
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self.comm.run()
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self.comm.serve(object_map, symbolizer)
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return result
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@kernel
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def get_rtio_counter_mu(self):
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return rtio_get_counter()
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@kernel
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def break_realtime(self):
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"""Set the timeline to the current value of the hardware RTIO counter
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plus a margin of 125000 machine units."""
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min_now = rtio_get_counter() + 125000
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if now_mu() < min_now:
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at_mu(min_now)
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