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SubjectRe: Accessing 64-bit BARs
 > You should use pci_iomap() to get an access pointer to the BAR. After this you 
> can access the memory with ioread*() and iowrite*(). See "man pci_iomap(9)"
> if you build kernel manpages.

That works fine, but ioremap() and readl()/writel() is also perfectly
fine for regions that you know are always MMIO.

- R.
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