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Altera_Forum
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14 years ago

Driving FPGA -> Host DMA with PCIe (hard IP in Cyclone IV)?

Hello all, I am trying to port an existing design which uses a PCI interface to a new board which uses the PCIe interface. Driving a DMA transfer on PCI was fairly simple, you write to t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

--- Quote Start ---

You should be able to do the exact same thing as PCI in PCIe.

You can use bar access to read out the status of the DMA.

or use interrupt.

--- Quote End ---

In the PCI core there's a Control Register at offset 0x306C, bit 5 of this tells

you when the data you've written to the Tx port has been sent.

I can't find any description in the PCIe User Guide of any similar register

or mechanism.

?

Nial.