Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 05 Jun 2003 08:42:22 -0400 | From | Albert Cahalan <> | Subject | Re: /proc/bus/pci |
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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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