Linux PCIE Physical Bus Address

Posted by Without me Its just Aweso on Super User See other posts from Super User or by Without me Its just Aweso
Published on 2010-08-31T20:41:17Z Indexed on 2011/01/08 4:55 UTC
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Filed under:

linux

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kernel

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pci-express

I am working on designing a custom PCIexpress card.

I am trying to write a kernel module that will DMA my custom card.

Right now when i plug the card into linux no valid PCI device shows up (meaning I probably have a error on my end, i know) however, If I halt the system at startup in the bootloader (uboot) I am able to directly access the card as I know in uboot the physical memory address that is mapped to my device.

Is there a way I can access the card in a simliar fashion in linux?

Thanks, Stephanie

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