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Subject: Re: PCI domain stuff
From: "David S. Miller" <davem@redhat.com>
To: Matthew Wilcox <willy@debian.org>
Cc: Greg KH <greg@kroah.com>, linux-kernel@vger.kernel.org,
       linux-pci@atrey.karlin.mff.cuni.cz, Patrick Mochel <mochel@osdl.org>
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Date: 30 Jun 2003 21:34:01 -0700
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On Mon, 2003-06-30 at 21:05, Matthew Wilcox wrote:
> We need to support mmaping device resources.  I think this actually
> merits being a first class sysfs concept -- turn a struct resource into
> an mmapable file.  The current fugly ioctl really has to go.

What's so wrong with the "fugly ioctl"?

What can't you do with it?

You can even mmap the complete I/O space of a PCI bus (in order to poke
around in implicit I/O resources like the VGA registers that a PCI card
might respond to).