Add ILA for debugging dma requests

ip/ila_0/.gitignore

@@ -1,4 +1,3 @@
 *
 !.gitignore
-!*/
+!*.xci
-!*/.xci

ip/pcie4_uscale_plus_0/.gitignore

@@ -0,0 +1,3 @@
+*
+!.gitignore
+!*.xci

sources.list

@@ -1,4 +1,5 @@
 ip/pcie4_uscale_plus_0/pcie4_uscale_plus_0.xci
+ip/ila_0/ila_0.xci
 src/alibaba_cloud.xdc
 src/alibaba_pcie_top.sv
 src/regs/verilator.vlt

src/pcie_dma_wrapper.sv

@@ -103,6 +103,31 @@ always_comb begin
     hwif_in.dma_wr.done.done.hwset = wr_desc.sts_valid;
 end
 
+`ifndef SIM
+ila_0 rd_desc_ila (
+    .clk                (clk),
+
+    .probe0             (rd_desc.req_src_addr),
+    .probe1             (rd_desc.req_dst_addr),
+    .probe2             (rd_desc.req_len),
+    .probe3             (rd_desc.req_tag),
+    .probe4             (rd_desc.req_valid),
+    .probe5             (rd_desc.req_ready),
+    .probe6             (rd_desc.sts_valid)
+);
+
+ila_0 wr_desc_ila (
+    .clk                (clk),
+
+    .probe0             (wr_desc.req_dst_addr),
+    .probe1             (wr_desc.req_src_addr),
+    .probe2             (wr_desc.req_len),
+    .probe3             (wr_desc.req_tag),
+    .probe4             (wr_desc.req_valid),
+    .probe5             (wr_desc.req_ready),
+    .probe6             (wr_desc.sts_valid)
+);
+`endif
 
 taxi_dma_if_pcie_us #(
     // disable flow control, shouldn't be needed

sw/test/pcie_dma_test.c

@@ -76,6 +76,8 @@ int virt_to_phys_user(uintptr_t *paddr, uintptr_t vaddr)
 int main(void)
 {
 
+    uint32_t dma_mem_addr = 0x10;
+
     /* Instead of allocating source, just use the constant string */
 
     //printf("Allocating 1024 bytes as source\n");
@@ -108,7 +110,7 @@ int main(void)
     printf("Sending read DMA\n");
     pcie_base[0] = (uint32_t)src_phys;
     pcie_base[1] = (uint32_t)(src_phys >> 32);
-    pcie_base[2] = 0;
+    pcie_base[2] = dma_mem_addr;
     pcie_base[3] = strlen(src);
 
     for (int i = 0; i < 4; i++) {
@@ -125,7 +127,7 @@ int main(void)
     printf("Sending read DMA\n");
     pcie_base[8] = (uint32_t)dst_phys;
     pcie_base[9] = (uint32_t)(dst_phys >> 32);
-    pcie_base[10] = 0;
+    pcie_base[10] = dma_mem_addr;
     pcie_base[11] = strlen(src);
 
     for (int i = 8; i < 12; i++) {