bslathi19/alibaba_pcie
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Update test code

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This commit is contained in:
Byron Lathi
2025-11-23 22:58:15 -08:00
parent 3419fd6a61
commit fab665b765
3 changed files with 40 additions and 17 deletions
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4
src/regs/compile_regs.sh
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@@ -1,4 +1,6 @@
SRCS="../pcie/regs/pcie_dma_regs.rdl ../pcie/regs/pcie_top_regs.rdl ../eth/regs/eth_mac_25g_us_regs.rdl ../eth/regs/eth_dma_wrapper_regs.rdl alibaba_pcie_top.rdl"
peakrdl busdecoder -t alibaba_pcie_top_regs $SRCS -o . --cpuif taxi-apb
peakrdl python-regmap -t alibaba_pcie_top_regs $SRCS -o alibaba_pcie_top_regs.py
peakrdl python-regmap -t alibaba_pcie_top_regs $SRCS -o alibaba_pcie_top_regs.py
peakrdl html -t alibaba_pcie_top_regs $SRCS -o html
peakrdl c-header -t alibaba_pcie_top_regs $SRCS -o alibaba_pcie_top_regs.h

1
sw/test/alibaba_pcie_top_regs.h Symbolic link
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@@ -0,0 +1 @@
../../src/regs/alibaba_pcie_top_regs.h

52
sw/test/pcie_dma_test.c
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@@ -7,6 +7,8 @@
#include <sys/mman.h>
#include <string.h>
#include "alibaba_pcie_top_regs.h"
typedef struct {
uint64_t pfn : 55;
unsigned int soft_dirty : 1;
@@ -105,8 +107,8 @@ int main(void)
// this is hardcoded, seems to be deterministic.
uint32_t pcie_physical_base_offset = 0xfe800000;
int fd = open("/dev/mem", O_RDWR|O_SYNC);
uint32_t* pcie_base = (uint32_t*)mmap(0, 64, PROT_READ|PROT_WRITE, MAP_SHARED, fd, pcie_physical_base_offset);
printf("Virtual PCIe Base: %p\n", pcie_base);
alibaba_pcie_top_regs_t* top_regs = (alibaba_pcie_top_regs_t*)mmap(0, 64, PROT_READ|PROT_WRITE, MAP_SHARED, fd, pcie_physical_base_offset);
printf("Virtual PCIe Base: %p\n", top_regs);
for (int i = 0; i < 2; i++) {
@@ -119,34 +121,52 @@ int main(void)
memset((void*)dst, 0, 1024);
printf("Sending read DMA\n");
pcie_base[0] = (uint32_t)src_phys;
pcie_base[1] = (uint32_t)(src_phys >> 32);
pcie_base[2] = dma_mem_addr;
pcie_base[3] = strlen(src);
top_regs->pcie_top_regs.pcie_dma_regs.dma_rd.src_addr_low = (uint32_t)src_phys;
top_regs->pcie_top_regs.pcie_dma_regs.dma_rd.src_addr_high = (uint32_t)(src_phys >> 32);
top_regs->pcie_top_regs.pcie_dma_regs.dma_rd.dst_addr = dma_mem_addr;
top_regs->pcie_top_regs.pcie_dma_regs.dma_rd.length = strlen(src);
for (int i = 0; i < 4; i++) {
printf("pcie_base[%d] = %x\n", i, pcie_base[i]);
printf("top_regs[%d] = %x\n", i, (&top_regs->pcie_top_regs.pcie_dma_regs.dma_rd)[i]);
}
pcie_base[4] = 1;
printf("%d\n", pcie_base[4]);
top_regs->pcie_top_regs.pcie_dma_regs.dma_rd.trigger = 1;
printf("%d\n", top_regs->pcie_top_regs.pcie_dma_regs.dma_rd.trigger);
printf("\n\n");
printf("Sending write DMA\n");
// we use dma_mem_addr twice, but these are actually 2 separate memories.
// Set up stream to memory DMA to store ethernet frame
print("Setting up stream to memory DMA");
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_wr.src_addr = 0;
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_wr.dst_addr_low = dma_mem_addr;
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_wr.dst_addr_high = 0;
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_wr.length = strlen(src);
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_wr.trigger = 1;
// Trigger memory to stream dma to send ethernet frame
printf("Sending memory to stream DMA");
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_rd.src_addr_low = dma_mem_addr;
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_rd.src_addr_high = 0;
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_rd.dst_addr = 0;
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_rd.length = strlen(src);
top_regs->eth_dma_wrapper_regs.pcie_dma_regs.dma_rd.trigger = 1;
printf("Sending read DMA\n");
pcie_base[8] = (uint32_t)dst_phys;
pcie_base[9] = (uint32_t)(dst_phys >> 32);
pcie_base[10] = dma_mem_addr;
pcie_base[11] = strlen(src);
top_regs->pcie_top_regs.pcie_dma_regs.dma_wr.dst_addr_low = (uint32_t)dst_phys;
top_regs->pcie_top_regs.pcie_dma_regs.dma_wr.dst_addr_high = (uint32_t)(dst_phys >> 32);
top_regs->pcie_top_regs.pcie_dma_regs.dma_wr.src_addr = dma_mem_addr;
top_regs->pcie_top_regs.pcie_dma_regs.dma_wr.length = strlen(src);
for (int i = 8; i < 12; i++) {
printf("pcie_base[%d] = %x\n", i, pcie_base[i]);
printf("pcie_base[%d] = %x\n", i, (&top_regs->pcie_top_regs.pcie_dma_regs.dma_wr)[i]);
}
pcie_base[12] = 1;
printf("%d\n", pcie_base[12]);
top_regs->pcie_top_regs.pcie_dma_regs.dma_wr.trigger = 1;
printf("%d\n", top_regs->pcie_top_regs.pcie_dma_regs.dma_wr.trigger);
printf("\n\n");
printf("strlen(dst)=%d\n", strlen(dst));