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Altera_Forum's avatar
Altera_Forum
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16 years ago

Avalon-to-PCIe Address Translation

Hi, I am trying to transfer data from PCIe endpoint's DDR2 to host's mem via DMA. I can setup DMA and initiate a transfer; I can also see DMA performing DDR2 'reads' on SignalTap-II; but DMA ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

What's the PCI Tx Slave address? Is 0x0? If not, you have to write (PCI_TX_ADDR + 0x344_7000) on dma write address.

The problem can be on Host side? Are you using Jungo Windriver? Did you make the DMA Lock? Take care with cache flush question on host... and.... you have to pass the physical address of win32 host, generated by the Dma Lock function...