Hi,
I'm writing a driver for a DMA engine on the PCI bus. My architecture is
a 36-bit PowerPC (MPC85xx).
In my DMA driver, I want to configure the DMA to transfer data to/from a
PCI device.
I get the PCI address of the device BAR with the command pci_resource_start.
This address is 36-bit but the PCI BAR of the device is 32-bit: I can't
use the 36-bit address to run the DMA.
In kernel documentations, it's advised not to directly read the BAR.
Is there a function which provides the real PCI address i.e. the one
stored in the BAR?
Thanks.
C. Cano
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