litex/targets/test.py

357 lines
9.9 KiB
Python

import os
from migen.fhdl.std import *
from migen.bank import csrgen
from migen.bus import wishbone, csr
from migen.bus import wishbone2csr
from migen.genlib.resetsync import AsyncResetSynchronizer
from migen.bank.description import *
from miscope import MiLa, Term, UART2Wishbone
from miscope.uart2wishbone import UART2Wishbone
from misoclib import identifier
from lib.sata.common import *
from lib.sata.phy import SATAPHY
from lib.sata import SATACON
from migen.genlib.cdc import *
class _CRG(Module):
def __init__(self, platform):
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_por = ClockDomain(reset_less=True)
clk200 = platform.request("clk200")
clk200_se = Signal()
self.specials += Instance("IBUFDS", i_I=clk200.p, i_IB=clk200.n, o_O=clk200_se)
pll_locked = Signal()
pll_fb = Signal()
pll_sys = Signal()
self.specials += [
Instance("PLLE2_BASE",
p_STARTUP_WAIT="FALSE", o_LOCKED=pll_locked,
# VCO @ 1GHz
p_REF_JITTER1=0.01, p_CLKIN1_PERIOD=5.0,
p_CLKFBOUT_MULT=5, p_DIVCLK_DIVIDE=1,
i_CLKIN1=clk200_se, i_CLKFBIN=pll_fb, o_CLKFBOUT=pll_fb,
# 100MHz
p_CLKOUT0_DIVIDE=5, p_CLKOUT0_PHASE=0.0, o_CLKOUT0=pll_sys,
p_CLKOUT1_DIVIDE=2, p_CLKOUT1_PHASE=0.0, #o_CLKOUT1=,
p_CLKOUT2_DIVIDE=2, p_CLKOUT2_PHASE=0.0, #o_CLKOUT2=,
p_CLKOUT3_DIVIDE=2, p_CLKOUT3_PHASE=0.0, #o_CLKOUT3=,
p_CLKOUT4_DIVIDE=2, p_CLKOUT4_PHASE=0.0, #o_CLKOUT4=
),
Instance("BUFG", i_I=pll_sys, o_O=self.cd_sys.clk),
AsyncResetSynchronizer(self.cd_sys, ~pll_locked | platform.request("cpu_reset")),
]
class UART2WB(Module):
csr_base = 0x00000000
csr_data_width = 8
csr_map = {
"uart2wb": 0,
"identifier": 2,
}
interrupt_map = {}
cpu_type = None
def __init__(self, platform, clk_freq):
self.uart2wb = UART2Wishbone(platform.request("serial"), clk_freq, baud=921600)
# CSR bridge 0x00000000 (shadow @0x00000000)
self.wishbone2csr = wishbone2csr.WB2CSR(bus_csr=csr.Interface(self.csr_data_width))
self._wb_masters = [self.uart2wb.wishbone]
self._wb_slaves = [(lambda a: a[23:25] == 0, self.wishbone2csr.wishbone)]
self.cpu_csr_regions = [] # list of (name, origin, busword, csr_list/Memory)
# CSR
self.identifier = identifier.Identifier(0, int(clk_freq), 0)
def add_wb_master(self, wbm):
if self.finalized:
raise FinalizeError
self._wb_masters.append(wbm)
def add_wb_slave(self, address_decoder, interface):
if self.finalized:
raise FinalizeError
self._wb_slaves.append((address_decoder, interface))
def add_cpu_memory_region(self, name, origin, length):
self.cpu_memory_regions.append((name, origin, length))
def add_cpu_csr_region(self, name, origin, busword, obj):
self.cpu_csr_regions.append((name, origin, busword, obj))
def do_finalize(self):
# Wishbone
self.wishbonecon = wishbone.InterconnectShared(self._wb_masters,
self._wb_slaves, register=True)
# CSR
self.csrbankarray = csrgen.BankArray(self,
lambda name, memory: self.csr_map[name if memory is None else name + "_" + memory.name_override],
data_width=self.csr_data_width)
self.csrcon = csr.Interconnect(self.wishbone2csr.csr, self.csrbankarray.get_buses())
for name, csrs, mapaddr, rmap in self.csrbankarray.banks:
self.add_cpu_csr_region(name, 0xe0000000+0x800*mapaddr, flen(rmap.bus.dat_w), csrs)
for name, memory, mapaddr, mmap in self.csrbankarray.srams:
self.add_cpu_csr_region(name, 0xe0000000+0x800*mapaddr, flen(rmap.bus.dat_w), memory)
class SimDesign(UART2WB):
default_platform = "kc705"
def __init__(self, platform, export_mila=False):
clk_freq = 200*1000000
UART2WB.__init__(self, platform, clk_freq)
self.crg = _CRG(platform)
self.sata_phy_host = SATAPHY(platform.request("sata_host"), clk_freq, host=True)
self.comb += [
self.sata_phy_host.sink.stb.eq(1),
self.sata_phy_host.sink.data.eq(primitives["SYNC"]),
self.sata_phy_host.sink.charisk.eq(0b0001)
]
self.sata_phy_device = SATAPHY(platform.request("sata_device"), clk_freq, host=False)
self.comb += [
self.sata_phy_device.sink.stb.eq(1),
self.sata_phy_device.sink.data.eq(primitives["SYNC"]),
self.sata_phy_device.sink.charisk.eq(0b0001)
]
class ClockLeds(Module):
def __init__(self, platform):
led_sata_rx = platform.request("user_led", 0)
led_sata_tx = platform.request("user_led", 1)
sata_rx_cnt = Signal(32)
sata_tx_cnt = Signal(32)
self.sync.sata_rx += \
If(sata_rx_cnt == 0,
led_sata_rx.eq(~led_sata_rx),
sata_rx_cnt.eq(150*1000*1000//2)
).Else(
sata_rx_cnt.eq(sata_rx_cnt-1)
)
self.sync.sata_tx += \
If(sata_tx_cnt == 0,
led_sata_tx.eq(~led_sata_tx),
sata_tx_cnt.eq(150*1000*1000//2)
).Else(
sata_tx_cnt.eq(sata_tx_cnt-1)
)
class CommandGenerator(Module, AutoCSR):
def __init__(self, sata_con, sector_size):
self._write = CSR()
self._read = CSR()
self._identify = CSR()
self._sector = CSRStorage(48)
self._count = CSRStorage(4)
self._data = CSRStorage(32) # Note: fixed data, add a fifo later
self._sucess = CSRStatus()
self._failed = CSRStatus()
self.fsm = fsm = FSM(reset_state="IDLE")
def new_command(csr):
return csr.r & csr.re
cnt = Signal(16)
sector = self._sector.storage
count = self._count.storage
data = self._data.storage
success = self._sucess.status
failed = self._failed.status
clr_status = Signal()
set_success = Signal()
set_failed = Signal()
self.sync += [
If(clr_status,
success.eq(0),
failed.eq(0),
).Elif(set_success,
success.eq(1)
).Elif(set_failed,
failed.eq(1)
)
]
self.comb += sata_con.source.ack.eq(1)
# FSM
fsm.act("IDLE",
clr_status.eq(1),
If(new_command(self._write),
NextState("SEND_WRITE_CMD")
).Elif(new_command(self._read),
NextState("SEND_READ_CMD")
).Elif(new_command(self._identify),
NextState("SEND_IDENTIFY_CMD")
)
)
fsm.act("SEND_WRITE_CMD",
sata_con.sink.stb.eq(1),
sata_con.sink.sop.eq(cnt == 0),
sata_con.sink.eop.eq(cnt == (count*sector_size-1)),
sata_con.sink.write.eq(1),
sata_con.sink.sector.eq(sector),
sata_con.sink.count.eq(count),
sata_con.sink.data.eq(data),
If(sata_con.sink.eop & sata_con.sink.ack,
NextState("WAIT_WRITE_ACK")
)
)
fsm.act("WAIT_WRITE_ACK",
# XXX: add check of success / failed
If(sata_con.source.stb & sata_con.source.eop,
set_success.eq(1),
NextState("IDLE")
)
)
fsm.act("SEND_READ_CMD",
sata_con.sink.stb.eq(1),
sata_con.sink.sop.eq(1),
sata_con.sink.eop.eq(1),
sata_con.sink.read.eq(1),
sata_con.sink.sector.eq(sector),
sata_con.sink.count.eq(count),
If(sata_con.sink.ack,
NextState("WAIT_READ_ACK_AND_DATA")
)
)
fsm.act("WAIT_READ_ACK_AND_DATA",
# XXX: add check of success / failed and receive data
If(sata_con.source.stb & sata_con.source.eop,
set_success.eq(1),
NextState("IDLE")
)
)
fsm.act("SEND_IDENTIFY_CMD",
sata_con.sink.stb.eq(1),
sata_con.sink.sop.eq(1),
sata_con.sink.eop.eq(1),
sata_con.sink.identify.eq(1),
If(sata_con.sink.ack,
NextState("WAIT_IDENTIFY_ACK_AND_DATA")
)
)
fsm.act("WAIT_IDENTIFY_ACK_AND_DATA",
# XXX: add check of success / failed and receive data
If(sata_con.source.stb & sata_con.source.eop,
set_success.eq(1),
NextState("IDLE")
)
)
class TestDesign(UART2WB, AutoCSR):
default_platform = "kc705"
csr_map = {
"mila": 10,
"command_generator": 11
}
csr_map.update(UART2WB.csr_map)
def __init__(self, platform, export_mila=False):
clk_freq = 200*1000000
UART2WB.__init__(self, platform, clk_freq)
self.crg = _CRG(platform)
self.sata_phy = SATAPHY(platform.request("sata_host"), clk_freq, host=True, speed="SATA2")
self.sata_con = SATACON(self.sata_phy, sector_size=512, max_count=8)
self.command_generator = CommandGenerator(self.sata_con, sector_size=512)
self.clock_leds = ClockLeds(platform)
self.comb += platform.request("user_led", 2).eq(self.sata_phy.crg.ready)
self.comb += platform.request("user_led", 3).eq(self.sata_phy.ctrl.ready)
ctrl = self.sata_phy.ctrl
self.command_tx_fsm_state = Signal(4)
self.transport_tx_fsm_state = Signal(4)
self.link_tx_fsm_state = Signal(4)
self.command_rx_fsm_state = Signal(4)
self.command_rx_out_fsm_state = Signal(4)
self.transport_rx_fsm_state = Signal(4)
self.link_rx_fsm_state = Signal(4)
debug = (
ctrl.ready,
ctrl.sink.data,
ctrl.sink.charisk,
self.sata_phy.source.stb,
self.sata_phy.source.data,
self.sata_phy.source.charisk,
self.sata_phy.sink.stb,
self.sata_phy.sink.data,
self.sata_phy.sink.charisk,
self.sata_con.sink.stb,
self.sata_con.sink.sop,
self.sata_con.sink.eop,
self.sata_con.sink.ack,
self.sata_con.sink.write,
self.sata_con.sink.read,
self.sata_con.sink.identify,
self.sata_con.source.stb,
self.sata_con.source.sop,
self.sata_con.source.eop,
self.sata_con.source.ack,
self.sata_con.source.write,
self.sata_con.source.read,
self.sata_con.source.identify,
self.sata_con.source.success,
self.sata_con.source.failed,
self.sata_con.source.data,
self.command_tx_fsm_state,
self.transport_tx_fsm_state,
self.link_tx_fsm_state,
self.command_rx_fsm_state,
self.command_rx_out_fsm_state,
self.transport_rx_fsm_state,
self.link_rx_fsm_state,
)
self.mila = MiLa(depth=2048, dat=Cat(*debug))
self.mila.add_port(Term)
if export_mila:
mila_filename = os.path.join(platform.soc_ext_path, "test", "mila.csv")
self.mila.export(self, debug, mila_filename)
def do_finalize(self):
UART2WB.do_finalize(self)
self.comb += [
self.command_tx_fsm_state.eq(self.sata_con.command.tx.fsm.state),
self.transport_tx_fsm_state.eq(self.sata_con.transport.tx.fsm.state),
self.link_tx_fsm_state.eq(self.sata_con.link.tx.fsm.state),
self.command_rx_fsm_state.eq(self.sata_con.command.rx.fsm.state),
self.command_rx_out_fsm_state.eq(self.sata_con.command.rx.out_fsm.state),
self.transport_rx_fsm_state.eq(self.sata_con.transport.rx.fsm.state),
self.link_rx_fsm_state.eq(self.sata_con.link.rx.fsm.state)
]
#default_subtarget = SimDesign
default_subtarget = TestDesign