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    SubjectRe: /proc/bus/pci
    On Thu, 2003-06-05 at 08:16, David S. Miller wrote:
    > From: Albert Cahalan <albert@users.sourceforge.net>
    > Date: Thu, 05 Jun 2003 08:05:59 -0400
    >
    > To make this clear, mmap() on bar0 would get you
    > a mapping of that BAR.
    >
    > We have a way to portably mmap() PCI devices using just the device
    > node.

    The "device node"? You mean stuff in /proc, right?

    > If you make this new method, you might have to define a whole
    > new set of arch level support hooks.

    No. You explained why not:

    > What I'm saying is, we should reuse all of this code we have
    > to support mmap()'ing PCI devices properly now (via procfs
    > device node files).

    The existing per-arch code looks like it would work.
    At worst, an offset (probably already a #define somewhere)
    might need to be added.

    Pushing a MAP_MMIO through to the per-arch code
    might be slightly more involved. I can do PowerPC
    and x86 at least, if it comes to that.



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