440GX: mapping PCI address

Matt Porter mporter at kernel.crashing.org
Fri Jul 23 02:20:40 EST 2004

On Thu, Jul 22, 2004 at 09:43:26AM -0500, Barbier, Renaud (GE Infrastructure) wrote:
> Indeed, I get a virtual address out of mmap
> but my system freezes when I access it.
> I try to access the PCI external configuration registers:
> ptr=(unsigned int *)mmap(0, getpagesize(), PROT_READ | PROT_WRITE,
>                              MAP_SHARED, fd, 0x0ec00000);
> My kernel is 2.4.21 I would guess it should work from what I have seen regarding
> messages about 36-bit address on 440GX.

Check the archives, I've posted a URL for the 36-bit mmap patch
several times.

-Matt (one who reads archives and googles to get FAQs answered :P)

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