bslathi19/alibaba_pcie
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FPGA error when trying to send the ethernet packet #4

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opened 2025-11-23 23:14:52 -08:00 by bslathi19 · 1 comment
bslathi19 commented 2025-11-23 23:14:52 -08:00
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Probably need to throw an ILA in there or something to see what is going on.

Virtual address: 55fd741e92a0
Physical address: 1096792a0


Allocating 1024 bytes as destination
Virtual address: 0x55fd741e9ac0
Physical address: 109679ac0


mmaping PCIe space
Virtual PCIe Base: 0x7f357320e000
Sending read DMA
pcie_rd_dma[0] = 96792a0
pcie_rd_dma[1] = 1
pcie_rd_dma[2] = 0
pcie_rd_dma[3] = 4
0


Sending write DMA
Setting up stream to memory DMA
eth_wr_dma[0] = 0
eth_wr_dma[1] = 0
eth_wr_dma[2] = 0
eth_wr_dma[3] = 4
Sending memory to stream DMA
eth_rd_dma[0] = 0
eth_rd_dma[1] = 0
eth_rd_dma[2] = 0
eth_rd_dma[3] = 4
Sending read DMA
pcie_wr_dma[8] = ffffffff
pcie_wr_dma[9] = ffffffff
pcie_wr_dma[10] = ffffffff
pcie_wr_dma[11] = ffffffff
-1


strlen(dst)=0

Sending read DMA
pcie_rd_dma[0] = ffffffff
pcie_rd_dma[1] = ffffffff
pcie_rd_dma[2] = ffffffff
pcie_rd_dma[3] = ffffffff
-1


Sending write DMA
Setting up stream to memory DMA
eth_wr_dma[0] = ffffffff
eth_wr_dma[1] = ffffffff
eth_wr_dma[2] = ffffffff
eth_wr_dma[3] = ffffffff
Sending memory to stream DMA
eth_rd_dma[0] = ffffffff
eth_rd_dma[1] = ffffffff
eth_rd_dma[2] = ffffffff
eth_rd_dma[3] = ffffffff
Sending read DMA
pcie_wr_dma[8] = ffffffff
pcie_wr_dma[9] = ffffffff
pcie_wr_dma[10] = ffffffff
pcie_wr_dma[11] = ffffffff
-1


strlen(dst)=0
Probably need to throw an ILA in there or something to see what is going on. ``` Virtual address: 55fd741e92a0 Physical address: 1096792a0 Allocating 1024 bytes as destination Virtual address: 0x55fd741e9ac0 Physical address: 109679ac0 mmaping PCIe space Virtual PCIe Base: 0x7f357320e000 Sending read DMA pcie_rd_dma[0] = 96792a0 pcie_rd_dma[1] = 1 pcie_rd_dma[2] = 0 pcie_rd_dma[3] = 4 0 Sending write DMA Setting up stream to memory DMA eth_wr_dma[0] = 0 eth_wr_dma[1] = 0 eth_wr_dma[2] = 0 eth_wr_dma[3] = 4 Sending memory to stream DMA eth_rd_dma[0] = 0 eth_rd_dma[1] = 0 eth_rd_dma[2] = 0 eth_rd_dma[3] = 4 Sending read DMA pcie_wr_dma[8] = ffffffff pcie_wr_dma[9] = ffffffff pcie_wr_dma[10] = ffffffff pcie_wr_dma[11] = ffffffff -1 strlen(dst)=0 Sending read DMA pcie_rd_dma[0] = ffffffff pcie_rd_dma[1] = ffffffff pcie_rd_dma[2] = ffffffff pcie_rd_dma[3] = ffffffff -1 Sending write DMA Setting up stream to memory DMA eth_wr_dma[0] = ffffffff eth_wr_dma[1] = ffffffff eth_wr_dma[2] = ffffffff eth_wr_dma[3] = ffffffff Sending memory to stream DMA eth_rd_dma[0] = ffffffff eth_rd_dma[1] = ffffffff eth_rd_dma[2] = ffffffff eth_rd_dma[3] = ffffffff Sending read DMA pcie_wr_dma[8] = ffffffff pcie_wr_dma[9] = ffffffff pcie_wr_dma[10] = ffffffff pcie_wr_dma[11] = ffffffff -1 strlen(dst)=0 ```
bslathi19 commented 2025-11-23 23:15:22 -08:00
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Somehow after sending the read DMA, everything comes back as all 1s. What happens there?

Somehow after sending the read DMA, everything comes back as all 1s. What happens there?
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Reference: bslathi19/alibaba_pcie#4
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