from migen.fhdl.std import * from migen.bank.description import * from migen.bank import wbgen from mibuild.generic_platform import * from mibuild.xilinx.vivado import XilinxVivadoToolchain from misoclib.com import gpio from misoclib.soc import mem_decoder from targets.kc705 import MiniSoC from artiq.gateware.soc import AMPSoC from artiq.gateware import rtio, ad9858, nist_qc1 from artiq.gateware.rtio.phy import ttl_simple from artiq.gateware.rtio.phy.wishbone import RT2WB class _RTIOCRG(Module, AutoCSR): def __init__(self, platform, rtio_internal_clk): self._clock_sel = CSRStorage() self.clock_domains.cd_rtio = 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) self.specials += Instance("BUFGMUX", i_I0=rtio_internal_clk, i_I1=rtio_external_clk, i_S=self._clock_sel.storage, o_O=self.cd_rtio.clk) class NIST_QC1(MiniSoC, AMPSoC): csr_map = { "rtio": None, # mapped on Wishbone instead "rtiocrg": 13, "kernel_cpu": 14 } csr_map.update(MiniSoC.csr_map) mem_map = { "rtio": 0x20000000, # (shadow @0xa0000000) "mailbox": 0x70000000 # (shadow @0xf0000000) } mem_map.update(MiniSoC.mem_map) def __init__(self, platform, cpu_type="or1k", **kwargs): MiniSoC.__init__(self, platform, cpu_type=cpu_type, with_timer=False, **kwargs) AMPSoC.__init__(self) platform.add_extension(nist_qc1.fmc_adapter_io) self.submodules.leds = gpio.GPIOOut(Cat( platform.request("user_led", 0), platform.request("user_led", 1))) self.comb += [ platform.request("ttl_l_tx_en").eq(1), platform.request("ttl_h_tx_en").eq(1) ] # RTIO channels rtio_channels = [] for i in range(2): phy = ttl_simple.Inout(platform.request("pmt", i)) self.submodules += phy rtio_channels.append(rtio.Channel(phy.rtlink, ififo_depth=512)) for i in range(16): phy = ttl_simple.Output(platform.request("ttl", i)) self.submodules += phy rtio_channels.append(rtio.Channel(phy.rtlink)) phy = ttl_simple.Output(platform.request("user_led", 2)) self.submodules += phy rtio_channels.append(rtio.Channel(phy.rtlink)) self.add_constant("RTIO_DDS_CHANNEL", len(rtio_channels)) self.submodules.dds = RenameClockDomains( ad9858.AD9858(platform.request("dds")), "rio") phy = RT2WB(7, self.dds.bus) self.submodules += phy rtio_channels.append(rtio.Channel(phy.rtlink, ififo_depth=4)) # RTIO core self.submodules.rtiocrg = _RTIOCRG(platform, self.crg.pll_sys) self.submodules.rtio = rtio.RTIO(rtio_channels, clk_freq=125000000) self.add_constant("RTIO_FINE_TS_WIDTH", self.rtio.fine_ts_width) if isinstance(platform.toolchain, XilinxVivadoToolchain): platform.add_platform_command(""" create_clock -name rsys_clk -period 8.0 [get_nets {rsys_clk}] create_clock -name rio_clk -period 8.0 [get_nets {rio_clk}] set_false_path -from [get_clocks rsys_clk] -to [get_clocks rio_clk] set_false_path -from [get_clocks rio_clk] -to [get_clocks rsys_clk] """, rsys_clk=self.rtio.cd_rsys.clk, rio_clk=self.rtio.cd_rio.clk) # CPU connections rtio_csrs = self.rtio.get_csrs() self.submodules.rtiowb = wbgen.Bank(rtio_csrs) self.kernel_cpu.add_wb_slave(mem_decoder(self.mem_map["rtio"]), self.rtiowb.bus) self.add_csr_region("rtio", self.mem_map["rtio"] | 0x80000000, 32, rtio_csrs) default_subtarget = NIST_QC1