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Altera_Forum's avatar
Altera_Forum
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13 years ago

Linux device Driver for PCIe w/ regular DMA

I need to make a Linux device driver to access Altera's Stratix IV card via PCIe interface. I keep find references to some code for a Linux device driver using Scatter/Gather DMA (referenced here: http://www.alteraforum.com/forum/showthread.php?t=4525) but I need to make one for regular streaming DMA. How can I modify the Scatter/Gather driver to ise regular streaming DMA? I keep re-reading the DMA section in LDD3 and it just isn't registering. Any help would be appreciated.

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    hey there,

    I am pretty much working on a similar problem. I am using the stratix IV with a pcie interface reference design but am yet to sort out the driver completely.

    At this point I am using the sg/chaining dma driver example same as your driver example, but I am trying my luck by commenting out certain portions. But unfortunately am not able to register with the sg-dma on it.

    Keep me posted if you have any breakthrough.

    thanks