Linux PCIE Physical Bus Address
- by Without me Its just Aweso
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