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Altera_Forum's avatar
Altera_Forum
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14 years ago

Where is data stored in the PCI chaining dma reference design?

After adding a PCIe megafunction, a chaining dma reference design is generated by Quartus. I use it with the altpciechdma driver (I am on linux), and the DMA test seems to work fine. However, I...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

* The reference design does not have readable locations and thus a

* dummy read, used to flush PCI posted writes, cannot be performed.

I am still confused about this part. I don't know what it means.

But I figured out the data is stored in an altsyncram megafunction in the DMA arbiter module (look at the hierarchy).