artiq-zynq/src/gateware/zc706.py

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#!/usr/bin/env python
import argparse
from migen import *
from migen.genlib.resetsync import AsyncResetSynchronizer
from migen.genlib.cdc import MultiReg
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from migen_axi.integration.soc_core import SoCCore
from migen_axi.platforms import zc706
from misoc.interconnect.csr import *
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from misoc.integration import cpu_interface
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from artiq.gateware import rtio, nist_clock, nist_qc2
from artiq.gateware.rtio.phy import ttl_simple, ttl_serdes_7series, dds, spi2
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class RTIOCRG(Module, AutoCSR):
def __init__(self, platform, rtio_internal_clk):
self.clock_sel = CSRStorage()
self.pll_reset = CSRStorage(reset=1)
self.pll_locked = CSRStatus()
self.clock_domains.cd_rtio = ClockDomain()
self.clock_domains.cd_rtiox4 = ClockDomain(reset_less=True)
rtio_external_clk = Signal()
user_sma_clock = platform.request("user_sma_clock")
platform.add_period_constraint(user_sma_clock.p, 8.0)
self.specials += Instance("IBUFDS",
i_I=user_sma_clock.p, i_IB=user_sma_clock.n,
o_O=rtio_external_clk)
pll_locked = Signal()
rtio_clk = Signal()
rtiox4_clk = Signal()
self.specials += [
Instance("PLLE2_ADV",
p_STARTUP_WAIT="FALSE", o_LOCKED=pll_locked,
p_REF_JITTER1=0.01,
p_CLKIN1_PERIOD=8.0, p_CLKIN2_PERIOD=8.0,
i_CLKIN1=rtio_internal_clk, i_CLKIN2=rtio_external_clk,
# Warning: CLKINSEL=0 means CLKIN2 is selected
i_CLKINSEL=~self.clock_sel.storage,
# VCO @ 1GHz when using 125MHz input
p_CLKFBOUT_MULT=8, p_DIVCLK_DIVIDE=1,
i_CLKFBIN=self.cd_rtio.clk,
i_RST=self.pll_reset.storage,
o_CLKFBOUT=rtio_clk,
p_CLKOUT0_DIVIDE=2, p_CLKOUT0_PHASE=0.0,
o_CLKOUT0=rtiox4_clk),
Instance("BUFG", i_I=rtio_clk, o_O=self.cd_rtio.clk),
Instance("BUFG", i_I=rtiox4_clk, o_O=self.cd_rtiox4.clk),
AsyncResetSynchronizer(self.cd_rtio, ~pll_locked),
MultiReg(pll_locked, self.pll_locked.status)
]
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class ZC706(SoCCore):
def __init__(self):
platform = zc706.Platform()
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platform.toolchain.bitstream_commands.extend([
"set_property BITSTREAM.GENERAL.COMPRESS True [current_design]",
])
SoCCore.__init__(self, platform=platform, csr_data_width=32, ident=self.__class__.__name__)
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platform.add_platform_command("create_clock -name clk_fpga_0 -period 8 [get_pins \"PS7/FCLKCLK[0]\"]")
platform.add_platform_command("set_input_jitter clk_fpga_0 0.24")
self.submodules.rtio_crg = RTIOCRG(self.platform, self.ps7.cd_sys.clk)
self.csr_devices.append("rtio_crg")
self.platform.add_period_constraint(self.rtio_crg.cd_rtio.clk, 8.)
self.platform.add_false_path_constraints(
self.ps7.cd_sys.clk,
self.rtio_crg.cd_rtio.clk)
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def add_rtio(self, rtio_channels):
self.submodules.rtio_tsc = rtio.TSC("async", glbl_fine_ts_width=3)
self.submodules.rtio_core = rtio.Core(self.rtio_tsc, rtio_channels)
self.csr_devices.append("rtio_core")
self.submodules.rtio = rtio.KernelInitiator(self.rtio_tsc, now64=True)
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self.csr_devices.append("rtio")
self.comb += self.rtio.cri.connect(self.rtio_core.cri)
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self.submodules.rtio_moninj = rtio.MonInj(rtio_channels)
self.csr_devices.append("rtio_moninj")
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class Simple(ZC706):
def __init__(self):
ZC706.__init__(self)
platform = self.platform
rtio_channels = []
for i in range(4):
pad = platform.request("user_led", i)
phy = ttl_simple.Output(pad)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
self.add_rtio(rtio_channels)
class NIST_CLOCK(ZC706):
"""
NIST clock hardware, with old backplane and 11 DDS channels
"""
def __init__(self):
ZC706.__init__(self)
platform = self.platform
platform.add_extension(nist_clock.fmc_adapter_io)
rtio_channels = []
for i in range(16):
if i % 4 == 3:
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phy = ttl_serdes_7series.InOut_8X(platform.request("ttl", i))
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self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=512))
else:
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phy = ttl_serdes_7series.Output_8X(platform.request("ttl", i))
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self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
for i in range(2):
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phy = ttl_serdes_7series.InOut_8X(platform.request("pmt", i))
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self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=512))
phy = ttl_simple.Output(platform.request("user_led", 1))
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self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
phy = ttl_simple.ClockGen(platform.request("la32_p"))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
for i in range(3):
phy = spi2.SPIMaster(self.platform.request("spi", i))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(
phy, ififo_depth=128))
phy = dds.AD9914(platform.request("dds"), 11, onehot=True)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=4))
self.add_rtio(rtio_channels)
class NIST_QC2(ZC706):
"""
NIST QC2 hardware, as used in Quantum I and Quantum II, with new backplane
and 24 DDS channels. Two backplanes are used.
"""
def __init__(self):
ZC706.__init__(self)
platform = self.platform
platform.add_extension(nist_qc2.fmc_adapter_io)
rtio_channels = []
clock_generators = []
# All TTL channels are In+Out capable
for i in range(40):
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phy = ttl_serdes_7series.InOut_8X(platform.request("ttl", i))
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self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=512))
# CLK0, CLK1 are for clock generators, on backplane SMP connectors
for i in range(2):
phy = ttl_simple.ClockGen(
platform.request("clkout", i))
self.submodules += phy
clock_generators.append(rtio.Channel.from_phy(phy))
phy = ttl_simple.Output(platform.request("user_led", 1))
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self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
# add clock generators after TTLs
rtio_channels += clock_generators
for i in range(4):
phy = spi2.SPIMaster(self.platform.request("spi", i))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(
phy, ififo_depth=128))
for backplane_offset in range(2):
phy = dds.AD9914(
platform.request("dds", backplane_offset), 12, onehot=True)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=4))
self.add_rtio(rtio_channels)
VARIANTS = {cls.__name__.lower(): cls for cls in [Simple, NIST_CLOCK, NIST_QC2]}
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def write_csr_file(soc, filename):
with open(filename, "w") as f:
f.write(cpu_interface.get_csr_rust(
soc.get_csr_regions(), soc.get_csr_groups(), soc.get_constants()))
def main():
parser = argparse.ArgumentParser(
description="ARTIQ port to the ZC706 Zynq development kit")
parser.add_argument("-r", default=None,
help="build Rust interface into the specified file")
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parser.add_argument("-g", default=None,
help="build gateware into the specified directory")
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parser.add_argument("-V", "--variant", default="simple",
help="variant: "
"simple/nist_clock/nist_qc2 "
"(default: %(default)s)")
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args = parser.parse_args()
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try:
cls = VARIANTS[args.variant.lower()]
except KeyError:
raise SystemExit("Invalid variant (-V/--variant)")
soc = cls()
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soc.finalize()
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if args.g is not None:
soc.build(build_dir=args.g)
if args.r is not None:
write_csr_file(soc, args.r)
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if __name__ == "__main__":
main()