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eth: Add frame length enforcement and additional statistics outputs to taxi_axis_gmii_rx

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2025-04-06 00:17:31 -07:00
parent 5582eddfa8
commit 0ef0bb3409
4 changed files with 362 additions and 67 deletions
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46
tb/eth/taxi_axis_gmii_rx/test_taxi_axis_gmii_rx.py
View File

@@ -45,6 +45,7 @@ class TB:
dut.clk_enable.setimmediatevalue(1)
dut.mii_select.setimmediatevalue(0)
dut.cfg_rx_max_pkt_len.setimmediatevalue(0)
dut.cfg_rx_enable.setimmediatevalue(0)
async def reset(self):
@@ -83,6 +84,7 @@ async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_
tb.source.ifg = ifg
tb.dut.mii_select.value = mii_sel
tb.dut.cfg_rx_max_pkt_len.value = 9218
tb.dut.cfg_rx_enable.value = 1
if enable_gen is not None:
@@ -121,6 +123,44 @@ async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_
await RisingEdge(dut.clk)
async def run_test_oversize(dut, ifg=12, enable_gen=None, mii_sel=False):
tb = TB(dut)
tb.source.ifg = ifg
tb.dut.cfg_rx_max_pkt_len.value = 1518
tb.dut.cfg_rx_enable.value = 1
if enable_gen is not None:
tb.set_enable_generator(enable_gen())
await tb.reset()
test_data = bytes(x for x in range(60))
for k in range(3):
test_frame = GmiiFrame.from_payload(test_data)
if k == 1:
test_frame = GmiiFrame.from_payload(bytes(x % 256 for x in range(1515)))
await tb.source.send(test_frame)
for k in range(3):
rx_frame = await tb.sink.recv()
if k == 1:
frame_error = rx_frame.tuser[-1] & 1
assert frame_error
else:
frame_error = rx_frame.tuser & 1
assert rx_frame.tdata == test_data
assert frame_error == 0
assert tb.sink.empty()
await RisingEdge(dut.clk)
await RisingEdge(dut.clk)
def size_list():
return list(range(60, 128)) + [512, 1514] + [60]*10
@@ -143,6 +183,12 @@ if cocotb.SIM_NAME:
factory.add_option("mii_sel", [False, True])
factory.generate_tests()
factory = TestFactory(run_test_oversize)
factory.add_option("ifg", [12, 0])
factory.add_option("enable_gen", [None, cycle_en])
factory.add_option("mii_sel", [False, True])
factory.generate_tests()
# cocotb-test

40
tb/eth/taxi_axis_gmii_rx/test_taxi_axis_gmii_rx.sv
View File

@@ -41,11 +41,25 @@ logic [PTP_TS_W-1:0] ptp_ts;
logic clk_enable;
logic mii_select;
logic [15:0] cfg_rx_max_pkt_len;
logic cfg_rx_enable;
logic start_packet;
logic error_bad_frame;
logic error_bad_fcs;
logic rx_start_packet;
logic stat_rx_byte;
logic [15:0] stat_rx_pkt_len;
logic stat_rx_pkt_fragment;
logic stat_rx_pkt_jabber;
logic stat_rx_pkt_ucast;
logic stat_rx_pkt_mcast;
logic stat_rx_pkt_bcast;
logic stat_rx_pkt_vlan;
logic stat_rx_pkt_good;
logic stat_rx_pkt_bad;
logic stat_rx_err_oversize;
logic stat_rx_err_bad_fcs;
logic stat_rx_err_bad_block;
logic stat_rx_err_framing;
logic stat_rx_err_preamble;
taxi_axis_gmii_rx #(
.DATA_W(DATA_W),
@@ -82,14 +96,28 @@ uut (
/*
* Configuration
*/
.cfg_rx_max_pkt_len(cfg_rx_max_pkt_len),
.cfg_rx_enable(cfg_rx_enable),
/*
* Status
*/
.start_packet(start_packet),
.error_bad_frame(error_bad_frame),
.error_bad_fcs(error_bad_fcs)
.rx_start_packet(rx_start_packet),
.stat_rx_byte(stat_rx_byte),
.stat_rx_pkt_len(stat_rx_pkt_len),
.stat_rx_pkt_fragment(stat_rx_pkt_fragment),
.stat_rx_pkt_jabber(stat_rx_pkt_jabber),
.stat_rx_pkt_ucast(stat_rx_pkt_ucast),
.stat_rx_pkt_mcast(stat_rx_pkt_mcast),
.stat_rx_pkt_bcast(stat_rx_pkt_bcast),
.stat_rx_pkt_vlan(stat_rx_pkt_vlan),
.stat_rx_pkt_good(stat_rx_pkt_good),
.stat_rx_pkt_bad(stat_rx_pkt_bad),
.stat_rx_err_oversize(stat_rx_err_oversize),
.stat_rx_err_bad_fcs(stat_rx_err_bad_fcs),
.stat_rx_err_bad_block(stat_rx_err_bad_block),
.stat_rx_err_framing(stat_rx_err_framing),
.stat_rx_err_preamble(stat_rx_err_preamble)
);
endmodule