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cndm_proto: Add PCIe configuration shim instance to read extended tag enable bit

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-02-05 14:37:42 -08:00
parent 20a5166f96
commit 7606ca328b
2 changed files with 34 additions and 1 deletions
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34
src/cndm_proto/rtl/cndm_proto_pcie_us.sv
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@@ -177,6 +177,8 @@ logic [7:0] pcie_tx_fc_nph_av;
logic [7:0] pcie_tx_fc_ph_av;
logic [11:0] pcie_tx_fc_pd_av;
logic ext_tag_en;
assign cfg_fc_sel = 3'b100;
taxi_dma_desc_if #(
@@ -335,7 +337,7 @@ dma_if_inst (
*/
.read_enable(1'b1),
.write_enable(1'b1),
.ext_tag_en(1'b0), // TODO
.ext_tag_en(ext_tag_en),
.rcb_128b(cfg_rcb_status[0]),
.requester_id('0),
.requester_id_en(1'b0),
@@ -385,6 +387,36 @@ dma_if_inst (
.stat_wr_tx_stall(stat_wr_tx_stall)
);
taxi_pcie_us_cfg #(
.PF_COUNT(1),
.VF_COUNT(0),
.VF_OFFSET(m_axis_pcie_rq.USER_W == 60 ? 64 : 4),
.PCIE_CAP_OFFSET(m_axis_pcie_rq.USER_W == 60 ? 12'h0C0 : 12'h070)
)
cfg_inst (
.clk(pcie_clk),
.rst(pcie_rst),
/*
* Configuration outputs
*/
.ext_tag_en(ext_tag_en),
.max_read_req_size(),
.max_payload_size(),
/*
* Interface to Ultrascale PCIe IP core
*/
.cfg_mgmt_addr(cfg_mgmt_addr),
.cfg_mgmt_function_number(cfg_mgmt_function_number),
.cfg_mgmt_write(cfg_mgmt_write),
.cfg_mgmt_write_data(cfg_mgmt_write_data),
.cfg_mgmt_byte_enable(cfg_mgmt_byte_enable),
.cfg_mgmt_read(cfg_mgmt_read),
.cfg_mgmt_read_data(cfg_mgmt_read_data),
.cfg_mgmt_read_write_done(cfg_mgmt_read_write_done)
);
// MSI interrupts
wire [PORTS-1:0] irq;
wire [31:0] msi_irq = 32'(irq);