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

Signed-off-by: Alex Forencich <alex@alexforencich.com>

src/cndm/rtl/cndm_micro_pcie_us.f

@@ -2,4 +2,5 @@ cndm_micro_pcie_us.sv
 cndm_micro_core.f
 ../lib/taxi/src/pcie/rtl/taxi_pcie_us_axil_master.sv
 ../lib/taxi/src/pcie/rtl/taxi_pcie_us_msi.sv
+../lib/taxi/src/pcie/rtl/taxi_pcie_us_cfg.sv
 ../lib/taxi/src/dma/rtl/taxi_dma_if_pcie_us.f

src/cndm/rtl/cndm_micro_pcie_us.sv

@@ -175,6 +175,8 @@ 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 #(
@@ -333,7 +335,7 @@ 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),
@@ -383,6 +385,36 @@ 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)
+);
+
 wire [PORTS-1:0] irq;
 wire [31:0] msi_irq = 32'(irq);