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eth: Add support for synchronous gearbox to PHY, MAC+PHY, and GT wrappers

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2025-05-30 21:14:54 -07:00
parent f31ba113d2
commit e4762b7a8c
76 changed files with 3853 additions and 1090 deletions
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3
src/eth/example/KCU105/fpga/rtl/fpga_core.sv
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@@ -535,6 +535,9 @@ end else begin : sfp_mac
.CNT(2),
// GT config
.CFG_LOW_LATENCY(1),
// GT type
.GT_TYPE("GTH"),

35
src/eth/example/KCU105/fpga/tb/fpga_core/test_fpga_core.py
View File

@@ -71,11 +71,38 @@ class TB:
cocotb.start_soon(Clock(dut.sfp_mgt_refclk_0_p, 6.4, units="ns").start())
for ch in dut.sfp_mac.sfp_mac_inst.ch:
cocotb.start_soon(Clock(ch.ch_inst.gt_inst.tx_clk, 6.4, units="ns").start())
cocotb.start_soon(Clock(ch.ch_inst.gt_inst.rx_clk, 6.4, units="ns").start())
gt_inst = ch.ch_inst.gt.gt_inst
self.sfp_sources.append(BaseRSerdesSource(ch.ch_inst.serdes_rx_data, ch.ch_inst.serdes_rx_hdr, ch.ch_inst.gt_inst.rx_clk, slip=ch.ch_inst.serdes_rx_bitslip, reverse=True))
self.sfp_sinks.append(BaseRSerdesSink(ch.ch_inst.serdes_tx_data, ch.ch_inst.serdes_tx_hdr, ch.ch_inst.gt_inst.tx_clk, reverse=True))
if ch.ch_inst.CFG_LOW_LATENCY.value:
clk = 6.206
gbx_cfg = (33, [32])
else:
clk = 6.4
gbx_cfg = None
cocotb.start_soon(Clock(gt_inst.tx_clk, clk, units="ns").start())
cocotb.start_soon(Clock(gt_inst.rx_clk, clk, units="ns").start())
self.sfp_sources.append(BaseRSerdesSource(
data=gt_inst.serdes_rx_data,
data_valid=gt_inst.serdes_rx_data_valid,
hdr=gt_inst.serdes_rx_hdr,
hdr_valid=gt_inst.serdes_rx_hdr_valid,
clock=gt_inst.rx_clk,
slip=gt_inst.serdes_rx_bitslip,
reverse=True,
gbx_cfg=gbx_cfg
))
self.sfp_sinks.append(BaseRSerdesSink(
data=gt_inst.serdes_tx_data,
data_valid=gt_inst.serdes_tx_data_valid,
hdr=gt_inst.serdes_tx_hdr,
hdr_valid=gt_inst.serdes_tx_hdr_valid,
gbx_start=gt_inst.serdes_tx_gbx_start,
clock=gt_inst.tx_clk,
reverse=True,
gbx_cfg=gbx_cfg
))
self.uart_source = UartSource(dut.uart_rxd, baud=921600, bits=8, stop_bits=1)
self.uart_sink = UartSink(dut.uart_txd, baud=921600, bits=8, stop_bits=1)