def bench():
# Parameters
TARGET = "SIM"
CLOCK_INPUT_STYLE = "BUFIO2"
ENABLE_PADDING = 1
MIN_FRAME_LENGTH = 64
TX_FIFO_ADDR_WIDTH = 9
RX_FIFO_ADDR_WIDTH = 9
# Inputs
clk = Signal(bool(0))
rst = Signal(bool(0))
current_test = Signal(intbv(0)[8:])
logic_clk = Signal(bool(0))
logic_rst = Signal(bool(0))
tx_axis_tdata = Signal(intbv(0)[8:])
tx_axis_tvalid = Signal(bool(0))
tx_axis_tlast = Signal(bool(0))
tx_axis_tuser = Signal(bool(0))
rx_axis_tready = Signal(bool(0))
mii_rx_clk = Signal(bool(0))
mii_rxd = Signal(intbv(0)[4:])
mii_rx_dv = Signal(bool(0))
mii_rx_er = Signal(bool(0))
mii_tx_clk = Signal(bool(0))
ifg_delay = Signal(intbv(0)[8:])
# Outputs
tx_axis_tready = Signal(bool(0))
rx_axis_tdata = Signal(intbv(0)[8:])
rx_axis_tvalid = Signal(bool(0))
rx_axis_tlast = Signal(bool(0))
rx_axis_tuser = Signal(bool(0))
mii_txd = Signal(intbv(0)[4:])
mii_tx_en = Signal(bool(0))
mii_tx_er = Signal(bool(0))
tx_error_underflow = Signal(bool(0))
tx_fifo_overflow = Signal(bool(0))
tx_fifo_bad_frame = Signal(bool(0))
tx_fifo_good_frame = Signal(bool(0))
rx_error_bad_frame = Signal(bool(0))
rx_error_bad_fcs = Signal(bool(0))
rx_fifo_overflow = Signal(bool(0))
rx_fifo_bad_frame = Signal(bool(0))
rx_fifo_good_frame = Signal(bool(0))
# sources and sinks
axis_source_pause = Signal(bool(0))
axis_sink_pause = Signal(bool(0))
mii_source = mii_ep.MIISource()
mii_source_logic = mii_source.create_logic(mii_rx_clk,
rst,
txd=mii_rxd,
tx_en=mii_rx_dv,
tx_er=mii_rx_er,
name='mii_source')
mii_sink = mii_ep.MIISink()
mii_sink_logic = mii_sink.create_logic(mii_tx_clk,
rst,
rxd=mii_txd,
rx_dv=mii_tx_en,
rx_er=mii_tx_er,
name='mii_sink')
axis_source = axis_ep.AXIStreamSource()
axis_source_logic = axis_source.create_logic(logic_clk,
logic_rst,
tdata=tx_axis_tdata,
tvalid=tx_axis_tvalid,
tready=tx_axis_tready,
tlast=tx_axis_tlast,
tuser=tx_axis_tuser,
pause=axis_source_pause,
name='axis_source')
axis_sink = axis_ep.AXIStreamSink()
axis_sink_logic = axis_sink.create_logic(logic_clk,
logic_rst,
tdata=rx_axis_tdata,
tvalid=rx_axis_tvalid,
tready=rx_axis_tready,
tlast=rx_axis_tlast,
tuser=rx_axis_tuser,
pause=axis_sink_pause,
name='axis_sink')
# DUT
if os.system(build_cmd):
raise Exception("Error running build command")
dut = Cosimulation("vvp -m myhdl %s.vvp -lxt2" % testbench,
clk=clk,
rst=rst,
current_test=current_test,
logic_clk=logic_clk,
logic_rst=logic_rst,
tx_axis_tdata=tx_axis_tdata,
tx_axis_tvalid=tx_axis_tvalid,
tx_axis_tready=tx_axis_tready,
tx_axis_tlast=tx_axis_tlast,
tx_axis_tuser=tx_axis_tuser,
rx_axis_tdata=rx_axis_tdata,
rx_axis_tready=rx_axis_tready,
rx_axis_tvalid=rx_axis_tvalid,
rx_axis_tlast=rx_axis_tlast,
rx_axis_tuser=rx_axis_tuser,
mii_rx_clk=mii_rx_clk,
mii_rxd=mii_rxd,
mii_rx_dv=mii_rx_dv,
mii_rx_er=mii_rx_er,
mii_tx_clk=mii_tx_clk,
mii_txd=mii_txd,
mii_tx_en=mii_tx_en,
mii_tx_er=mii_tx_er,
tx_error_underflow=tx_error_underflow,
tx_fifo_overflow=tx_fifo_overflow,
tx_fifo_bad_frame=tx_fifo_bad_frame,
tx_fifo_good_frame=tx_fifo_good_frame,
rx_error_bad_frame=rx_error_bad_frame,
rx_error_bad_fcs=rx_error_bad_fcs,
rx_fifo_overflow=rx_fifo_overflow,
rx_fifo_bad_frame=rx_fifo_bad_frame,
rx_fifo_good_frame=rx_fifo_good_frame,
ifg_delay=ifg_delay)
@always(delay(4))
def clkgen():
clk.next = not clk
logic_clk.next = not clk
phy_clk_hp = Signal(int(20))
@instance
def phy_clk_gen():
while True:
yield delay(int(phy_clk_hp))
mii_rx_clk.next = not mii_rx_clk
mii_tx_clk.next = not mii_rx_clk
rx_error_bad_frame_asserted = Signal(bool(0))
rx_error_bad_fcs_asserted = Signal(bool(0))
@always(clk.posedge)
def monitor():
if (rx_error_bad_frame):
rx_error_bad_frame_asserted.next = 1
if (rx_error_bad_fcs):
rx_error_bad_fcs_asserted.next = 1
clk_enable_rate = Signal(int(0))
clk_enable_div = Signal(int(0))
@instance
def check():
yield delay(100)
yield clk.posedge
rst.next = 1
logic_rst.next = 1
yield clk.posedge
rst.next = 0
logic_rst.next = 0
yield clk.posedge
yield delay(100)
yield clk.posedge
ifg_delay.next = 12
# testbench stimulus
for rate in [20, 200]:
phy_clk_hp.next = rate
yield delay(1000)
yield clk.posedge
print("test 1: test rx packet")
current_test.next = 1
test_frame = eth_ep.EthFrame()
test_frame.eth_dest_mac = 0xDAD1D2D3D4D5
test_frame.eth_src_mac = 0x5A5152535455
test_frame.eth_type = 0x8000
test_frame.payload = bytearray(range(32))
test_frame.update_fcs()
axis_frame = test_frame.build_axis_fcs()
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
bytearray(axis_frame))
yield axis_sink.wait()
rx_frame = axis_sink.recv()
eth_frame = eth_ep.EthFrame()
eth_frame.parse_axis(rx_frame)
eth_frame.update_fcs()
assert eth_frame == test_frame
yield delay(100)
yield clk.posedge
print("test 2: test tx packet")
current_test.next = 2
test_frame = eth_ep.EthFrame()
test_frame.eth_dest_mac = 0xDAD1D2D3D4D5
test_frame.eth_src_mac = 0x5A5152535455
test_frame.eth_type = 0x8000
test_frame.payload = bytearray(range(32))
test_frame.update_fcs()
axis_frame = test_frame.build_axis()
axis_source.send(axis_frame)
yield mii_sink.wait()
rx_frame = mii_sink.recv()
assert rx_frame.data[0:8] == bytearray(
b'\x55\x55\x55\x55\x55\x55\x55\xD5')
eth_frame = eth_ep.EthFrame()
eth_frame.parse_axis_fcs(rx_frame.data[8:])
print(hex(eth_frame.eth_fcs))
print(hex(eth_frame.calc_fcs()))
assert len(eth_frame.payload.data) == 46
assert eth_frame.eth_fcs == eth_frame.calc_fcs()
assert eth_frame.eth_dest_mac == test_frame.eth_dest_mac
assert eth_frame.eth_src_mac == test_frame.eth_src_mac
assert eth_frame.eth_type == test_frame.eth_type
assert eth_frame.payload.data.index(test_frame.payload.data) == 0
yield delay(100)
raise StopSimulation
return instances()
def bench():
# Parameters
TARGET = "SIM"
# Inputs
clk = Signal(bool(0))
rst = Signal(bool(0))
current_test = Signal(intbv(0)[8:])
btn = Signal(intbv(0)[4:])
sw = Signal(intbv(0)[4:])
phy_rx_clk = Signal(bool(0))
phy_rxd = Signal(intbv(0)[4:])
phy_rx_dv = Signal(bool(0))
phy_rx_er = Signal(bool(0))
phy_col = Signal(bool(0))
phy_crs = Signal(bool(0))
uart_rxd = Signal(bool(1))
# Outputs
led0_r = Signal(bool(0))
led0_g = Signal(bool(0))
led0_b = Signal(bool(0))
led1_r = Signal(bool(0))
led1_g = Signal(bool(0))
led1_b = Signal(bool(0))
led2_r = Signal(bool(0))
led2_g = Signal(bool(0))
led2_b = Signal(bool(0))
led3_r = Signal(bool(0))
led3_g = Signal(bool(0))
led3_b = Signal(bool(0))
led4 = Signal(bool(0))
led5 = Signal(bool(0))
led6 = Signal(bool(0))
led7 = Signal(bool(0))
phy_tx_clk = Signal(bool(0))
phy_txd = Signal(intbv(0)[4:])
phy_tx_en = Signal(bool(0))
phy_reset_n = Signal(bool(0))
uart_txd = Signal(bool(1))
# sources and sinks
mii_source = mii_ep.MIISource()
mii_source_logic = mii_source.create_logic(phy_rx_clk,
rst,
txd=phy_rxd,
tx_en=phy_rx_dv,
tx_er=phy_rx_er,
name='mii_source')
mii_sink = mii_ep.MIISink()
mii_sink_logic = mii_sink.create_logic(phy_tx_clk,
rst,
rxd=phy_txd,
rx_dv=phy_tx_en,
rx_er=False,
name='mii_sink')
uart_source = uart_ep.UARTSource()
uart_source_logic = uart_source.create_logic(clk,
rst,
txd=uart_rxd,
prescale=int(125000000 /
(115200 * 8)),
name='uart_source')
uart_sink = uart_ep.UARTSink()
uart_sink_logic = uart_sink.create_logic(clk,
rst,
rxd=uart_txd,
prescale=int(125000000 /
(115200 * 8)),
name='uart_sink')
# DUT
if os.system(build_cmd):
raise Exception("Error running build command")
dut = Cosimulation("vvp -m myhdl %s.vvp -lxt2" % testbench,
clk=clk,
rst=rst,
current_test=current_test,
btn=btn,
sw=sw,
led0_r=led0_r,
led0_g=led0_g,
led0_b=led0_b,
led1_r=led1_r,
led1_g=led1_g,
led1_b=led1_b,
led2_r=led2_r,
led2_g=led2_g,
led2_b=led2_b,
led3_r=led3_r,
led3_g=led3_g,
led3_b=led3_b,
led4=led4,
led5=led5,
led6=led6,
led7=led7,
phy_rx_clk=phy_rx_clk,
phy_rxd=phy_rxd,
phy_rx_dv=phy_rx_dv,
phy_rx_er=phy_rx_er,
phy_tx_clk=phy_tx_clk,
phy_txd=phy_txd,
phy_tx_en=phy_tx_en,
phy_col=phy_col,
phy_crs=phy_crs,
phy_reset_n=phy_reset_n,
uart_rxd=uart_rxd,
uart_txd=uart_txd)
@always(delay(4))
def clkgen():
clk.next = not clk
phy_clk_hp = Signal(int(40))
@instance
def rx_clk_gen():
while True:
yield delay(int(phy_clk_hp))
phy_rx_clk.next = not phy_rx_clk
phy_tx_clk.next = not phy_tx_clk
@instance
def check():
yield delay(100)
yield clk.posedge
rst.next = 1
yield clk.posedge
rst.next = 0
yield clk.posedge
yield delay(100)
yield clk.posedge
# testbench stimulus
yield clk.posedge
print("test 1: enumerate via UDP")
current_test.next = 1
pkt = xfcp.XFCPFrame()
pkt.path = []
pkt.rpath = []
pkt.ptype = 0xfe
pkt.payload = b''
test_frame = udp_ep.UDPFrame()
test_frame.eth_dest_mac = 0x020000000000
test_frame.eth_src_mac = 0xDAD1D2D3D4D5
test_frame.eth_type = 0x0800
test_frame.ip_version = 4
test_frame.ip_ihl = 5
test_frame.ip_dscp = 0
test_frame.ip_ecn = 0
test_frame.ip_length = None
test_frame.ip_identification = 0
test_frame.ip_flags = 2
test_frame.ip_fragment_offset = 0
test_frame.ip_ttl = 64
test_frame.ip_protocol = 0x11
test_frame.ip_header_checksum = None
test_frame.ip_source_ip = 0xc0a80181
test_frame.ip_dest_ip = 0xc0a80180
test_frame.udp_source_port = 1234
test_frame.udp_dest_port = 14000
test_frame.payload = pkt.build_axis()
test_frame.build()
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
test_frame.build_eth().build_axis_fcs().data)
# wait for ARP request packet
rx_frame = None
while rx_frame is None:
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = arp_ep.ARPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
assert check_frame.eth_dest_mac == 0xFFFFFFFFFFFF
assert check_frame.eth_src_mac == 0x020000000000
assert check_frame.eth_type == 0x0806
assert check_frame.arp_htype == 0x0001
assert check_frame.arp_ptype == 0x0800
assert check_frame.arp_hlen == 6
assert check_frame.arp_plen == 4
assert check_frame.arp_oper == 1
assert check_frame.arp_sha == 0x020000000000
assert check_frame.arp_spa == 0xc0a80180
assert check_frame.arp_tha == 0x000000000000
assert check_frame.arp_tpa == 0xc0a80181
# generate response
arp_frame = arp_ep.ARPFrame()
arp_frame.eth_dest_mac = 0x020000000000
arp_frame.eth_src_mac = 0xDAD1D2D3D4D5
arp_frame.eth_type = 0x0806
arp_frame.arp_htype = 0x0001
arp_frame.arp_ptype = 0x0800
arp_frame.arp_hlen = 6
arp_frame.arp_plen = 4
arp_frame.arp_oper = 2
arp_frame.arp_sha = 0xDAD1D2D3D4D5
arp_frame.arp_spa = 0xc0a80181
arp_frame.arp_tha = 0x020000000000
arp_frame.arp_tpa = 0xc0a80180
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
arp_frame.build_eth().build_axis_fcs().data)
rx_frame = None
while rx_frame is None:
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = udp_ep.UDPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
assert check_frame.eth_dest_mac == 0xDAD1D2D3D4D5
assert check_frame.eth_src_mac == 0x020000000000
assert check_frame.eth_type == 0x0800
assert check_frame.ip_version == 4
assert check_frame.ip_ihl == 5
assert check_frame.ip_dscp == 0
assert check_frame.ip_ecn == 0
assert check_frame.ip_identification == 0
assert check_frame.ip_flags == 2
assert check_frame.ip_fragment_offset == 0
assert check_frame.ip_ttl == 64
assert check_frame.ip_protocol == 0x11
assert check_frame.ip_source_ip == 0xc0a80180
assert check_frame.ip_dest_ip == 0xc0a80181
assert check_frame.udp_source_port == 14000
assert check_frame.udp_dest_port == 1234
rx_pkt = xfcp.XFCPFrame()
rx_pkt.parse_axis(check_frame.payload.data)
print(rx_pkt)
assert rx_pkt.ptype == 0xff
assert rx_pkt.path == []
assert rx_pkt.rpath == []
assert len(rx_pkt.payload.data) == 64
pkt = xfcp.XFCPFrame()
pkt.path = [0]
pkt.rpath = []
pkt.ptype = 0xfe
pkt.payload = b''
test_frame = udp_ep.UDPFrame()
test_frame.eth_dest_mac = 0x020000000000
test_frame.eth_src_mac = 0xDAD1D2D3D4D5
test_frame.eth_type = 0x0800
test_frame.ip_version = 4
test_frame.ip_ihl = 5
test_frame.ip_dscp = 0
test_frame.ip_ecn = 0
test_frame.ip_length = None
test_frame.ip_identification = 0
test_frame.ip_flags = 2
test_frame.ip_fragment_offset = 0
test_frame.ip_ttl = 64
test_frame.ip_protocol = 0x11
test_frame.ip_header_checksum = None
test_frame.ip_source_ip = 0xc0a80181
test_frame.ip_dest_ip = 0xc0a80180
test_frame.udp_source_port = 1234
test_frame.udp_dest_port = 14000
test_frame.payload = pkt.build_axis()
test_frame.build()
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
test_frame.build_eth().build_axis_fcs().data)
rx_frame = None
while rx_frame is None:
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = udp_ep.UDPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
assert check_frame.eth_dest_mac == 0xDAD1D2D3D4D5
assert check_frame.eth_src_mac == 0x020000000000
assert check_frame.eth_type == 0x0800
assert check_frame.ip_version == 4
assert check_frame.ip_ihl == 5
assert check_frame.ip_dscp == 0
assert check_frame.ip_ecn == 0
assert check_frame.ip_identification == 0
assert check_frame.ip_flags == 2
assert check_frame.ip_fragment_offset == 0
assert check_frame.ip_ttl == 64
assert check_frame.ip_protocol == 0x11
assert check_frame.ip_source_ip == 0xc0a80180
assert check_frame.ip_dest_ip == 0xc0a80181
assert check_frame.udp_source_port == 14000
assert check_frame.udp_dest_port == 1234
rx_pkt = xfcp.XFCPFrame()
rx_pkt.parse_axis(check_frame.payload.data)
print(rx_pkt)
assert rx_pkt.ptype == 0xff
assert rx_pkt.path == [0]
assert rx_pkt.rpath == []
assert len(rx_pkt.payload.data) == 32
assert mii_source.empty()
assert mii_sink.empty()
yield delay(100)
yield clk.posedge
print("test 1: test write and read RAM 0")
current_test.next = 1
pkt1 = xfcp.XFCPFrame()
pkt1.path = [0]
pkt1.ptype = 0x12
pkt1.payload = bytearray(
struct.pack('<BH', 0, 4) + b'\x11\x22\x33\x44')
pkt2 = xfcp.XFCPFrame()
pkt2.path = [0]
pkt2.ptype = 0x10
pkt2.payload = bytearray(struct.pack('<BH', 0, 4))
test_frame1 = udp_ep.UDPFrame()
test_frame1.eth_dest_mac = 0x020000000000
test_frame1.eth_src_mac = 0xDAD1D2D3D4D5
test_frame1.eth_type = 0x0800
test_frame1.ip_version = 4
test_frame1.ip_ihl = 5
test_frame1.ip_dscp = 0
test_frame1.ip_ecn = 0
test_frame1.ip_length = None
test_frame1.ip_identification = 0
test_frame1.ip_flags = 2
test_frame1.ip_fragment_offset = 0
test_frame1.ip_ttl = 64
test_frame1.ip_protocol = 0x11
test_frame1.ip_header_checksum = None
test_frame1.ip_source_ip = 0xc0a80181
test_frame1.ip_dest_ip = 0xc0a80180
test_frame1.udp_source_port = 1234
test_frame1.udp_dest_port = 14000
test_frame1.payload = pkt1.build_axis()
test_frame1.build()
test_frame2 = udp_ep.UDPFrame(test_frame1)
test_frame2.payload = pkt2.build_axis()
test_frame2.build()
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
test_frame1.build_eth().build_axis_fcs().data)
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
test_frame2.build_eth().build_axis_fcs().data)
rx_frame = None
while rx_frame is None:
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = udp_ep.UDPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
rx_pkt = xfcp.XFCPFrame()
rx_pkt.parse_axis(check_frame.payload.data)
print(rx_pkt)
assert rx_pkt.ptype == 0x13
assert rx_pkt.payload.data == struct.pack('<BH', 0, 4)
rx_frame = None
while rx_frame is None:
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = udp_ep.UDPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
rx_pkt = xfcp.XFCPFrame()
rx_pkt.parse_axis(check_frame.payload.data)
print(rx_pkt)
assert rx_pkt.ptype == 0x11
assert rx_pkt.payload.data == struct.pack('<BH', 0,
4) + b'\x11\x22\x33\x44'
assert mii_source.empty()
assert mii_sink.empty()
yield delay(100)
yield clk.posedge
print("test 3: enumerate via UART")
current_test.next = 3
pkt = xfcp.XFCPFrame()
pkt.path = []
pkt.rpath = []
pkt.ptype = 0xfe
pkt.payload = b''
uart_source.write(pkt.build_axis_cobs().data + b'\x00')
yield clk.posedge
rx_data = b''
while True:
if not uart_sink.empty():
b = bytearray(uart_sink.read(1))
rx_data += b
if b[0] == 0:
break
yield clk.posedge
rx_pkt = xfcp.XFCPFrame()
rx_pkt.parse_axis_cobs(rx_data[:-1])
print(rx_pkt)
assert rx_pkt.ptype == 0xff
assert rx_pkt.path == []
assert rx_pkt.rpath == []
assert len(rx_pkt.payload.data) == 64
pkt = xfcp.XFCPFrame()
pkt.path = [0]
pkt.rpath = []
pkt.ptype = 0xfe
pkt.payload = b''
uart_source.write(pkt.build_axis_cobs().data + b'\x00')
yield clk.posedge
rx_data = b''
while True:
if not uart_sink.empty():
b = bytearray(uart_sink.read(1))
rx_data += b
if b[0] == 0:
break
yield clk.posedge
rx_pkt = xfcp.XFCPFrame()
rx_pkt.parse_axis_cobs(rx_data[:-1])
print(rx_pkt)
assert rx_pkt.ptype == 0xff
assert rx_pkt.path == [0]
assert rx_pkt.rpath == []
assert len(rx_pkt.payload.data) == 32
yield delay(100)
raise StopSimulation
return instances()
def bench():
# Parameters
TARGET = "SIM"
# Inputs
clk = Signal(bool(0))
rst = Signal(bool(0))
current_test = Signal(intbv(0)[8:])
btn = Signal(intbv(0)[4:])
sw = Signal(intbv(0)[4:])
phy_rx_clk = Signal(bool(0))
phy_rxd = Signal(intbv(0)[4:])
phy_rx_dv = Signal(bool(0))
phy_rx_er = Signal(bool(0))
phy_col = Signal(bool(0))
phy_crs = Signal(bool(0))
uart_rxd = Signal(bool(0))
# Outputs
led0_r = Signal(bool(0))
led0_g = Signal(bool(0))
led0_b = Signal(bool(0))
led1_r = Signal(bool(0))
led1_g = Signal(bool(0))
led1_b = Signal(bool(0))
led2_r = Signal(bool(0))
led2_g = Signal(bool(0))
led2_b = Signal(bool(0))
led3_r = Signal(bool(0))
led3_g = Signal(bool(0))
led3_b = Signal(bool(0))
led4 = Signal(bool(0))
led5 = Signal(bool(0))
led6 = Signal(bool(0))
led7 = Signal(bool(0))
phy_tx_clk = Signal(bool(0))
phy_txd = Signal(intbv(0)[4:])
phy_tx_en = Signal(bool(0))
phy_reset_n = Signal(bool(0))
uart_txd = Signal(bool(0))
# sources and sinks
mii_source = mii_ep.MIISource()
mii_source_logic = mii_source.create_logic(phy_rx_clk,
rst,
txd=phy_rxd,
tx_en=phy_rx_dv,
tx_er=phy_rx_er,
name='mii_source')
mii_sink = mii_ep.MIISink()
mii_sink_logic = mii_sink.create_logic(phy_tx_clk,
rst,
rxd=phy_txd,
rx_dv=phy_tx_en,
rx_er=False,
name='mii_sink')
# DUT
if os.system(build_cmd):
raise Exception("Error running build command")
dut = Cosimulation("vvp -m myhdl %s.vvp -lxt2" % testbench,
clk=clk,
rst=rst,
current_test=current_test,
btn=btn,
sw=sw,
led0_r=led0_r,
led0_g=led0_g,
led0_b=led0_b,
led1_r=led1_r,
led1_g=led1_g,
led1_b=led1_b,
led2_r=led2_r,
led2_g=led2_g,
led2_b=led2_b,
led3_r=led3_r,
led3_g=led3_g,
led3_b=led3_b,
led4=led4,
led5=led5,
led6=led6,
led7=led7,
phy_rx_clk=phy_rx_clk,
phy_rxd=phy_rxd,
phy_rx_dv=phy_rx_dv,
phy_rx_er=phy_rx_er,
phy_tx_clk=phy_tx_clk,
phy_txd=phy_txd,
phy_tx_en=phy_tx_en,
phy_col=phy_col,
phy_crs=phy_crs,
phy_reset_n=phy_reset_n,
uart_rxd=uart_rxd,
uart_txd=uart_txd)
@always(delay(4))
def clkgen():
clk.next = not clk
phy_clk_hp = Signal(int(20))
@instance
def phy_clk_gen():
while True:
yield delay(int(phy_clk_hp))
phy_rx_clk.next = not phy_rx_clk
phy_tx_clk.next = not phy_tx_clk
@instance
def check():
yield delay(100)
yield clk.posedge
rst.next = 1
yield clk.posedge
rst.next = 0
yield clk.posedge
yield delay(100)
yield clk.posedge
# testbench stimulus
yield clk.posedge
print("test 1: test UDP RX packet")
current_test.next = 1
test_frame = udp_ep.UDPFrame()
test_frame.eth_dest_mac = 0x020000000000
test_frame.eth_src_mac = 0xDAD1D2D3D4D5
test_frame.eth_type = 0x0800
test_frame.ip_version = 4
test_frame.ip_ihl = 5
test_frame.ip_dscp = 0
test_frame.ip_ecn = 0
test_frame.ip_length = None
test_frame.ip_identification = 0
test_frame.ip_flags = 2
test_frame.ip_fragment_offset = 0
test_frame.ip_ttl = 64
test_frame.ip_protocol = 0x11
test_frame.ip_header_checksum = None
test_frame.ip_source_ip = 0xc0a80181
test_frame.ip_dest_ip = 0xc0a80180
test_frame.udp_source_port = 5678
test_frame.udp_dest_port = 1234
test_frame.payload = bytearray(range(32))
test_frame.build()
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
test_frame.build_eth().build_axis_fcs().data)
# wait for ARP request packet
while mii_sink.empty():
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = arp_ep.ARPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
assert check_frame.eth_dest_mac == 0xFFFFFFFFFFFF
assert check_frame.eth_src_mac == 0x020000000000
assert check_frame.eth_type == 0x0806
assert check_frame.arp_htype == 0x0001
assert check_frame.arp_ptype == 0x0800
assert check_frame.arp_hlen == 6
assert check_frame.arp_plen == 4
assert check_frame.arp_oper == 1
assert check_frame.arp_sha == 0x020000000000
assert check_frame.arp_spa == 0xc0a80180
assert check_frame.arp_tha == 0x000000000000
assert check_frame.arp_tpa == 0xc0a80181
# generate response
arp_frame = arp_ep.ARPFrame()
arp_frame.eth_dest_mac = 0x020000000000
arp_frame.eth_src_mac = 0xDAD1D2D3D4D5
arp_frame.eth_type = 0x0806
arp_frame.arp_htype = 0x0001
arp_frame.arp_ptype = 0x0800
arp_frame.arp_hlen = 6
arp_frame.arp_plen = 4
arp_frame.arp_oper = 2
arp_frame.arp_sha = 0xDAD1D2D3D4D5
arp_frame.arp_spa = 0xc0a80181
arp_frame.arp_tha = 0x020000000000
arp_frame.arp_tpa = 0xc0a80180
mii_source.send(b'\x55\x55\x55\x55\x55\x55\x55\xD5' +
arp_frame.build_eth().build_axis_fcs().data)
while mii_sink.empty():
yield clk.posedge
rx_frame = mii_sink.recv()
check_eth_frame = eth_ep.EthFrame()
check_eth_frame.parse_axis_fcs(rx_frame.data[8:])
check_frame = udp_ep.UDPFrame()
check_frame.parse_eth(check_eth_frame)
print(check_frame)
assert check_frame.eth_dest_mac == 0xDAD1D2D3D4D5
assert check_frame.eth_src_mac == 0x020000000000
assert check_frame.eth_type == 0x0800
assert check_frame.ip_version == 4
assert check_frame.ip_ihl == 5
assert check_frame.ip_dscp == 0
assert check_frame.ip_ecn == 0
assert check_frame.ip_identification == 0
assert check_frame.ip_flags == 2
assert check_frame.ip_fragment_offset == 0
assert check_frame.ip_ttl == 64
assert check_frame.ip_protocol == 0x11
assert check_frame.ip_source_ip == 0xc0a80180
assert check_frame.ip_dest_ip == 0xc0a80181
assert check_frame.udp_source_port == 1234
assert check_frame.udp_dest_port == 5678
assert check_frame.payload.data == bytearray(range(32))
assert mii_source.empty()
assert mii_sink.empty()
yield delay(100)
raise StopSimulation
return instances()