Re: Add a "enable" sysfs attribute to the pci devices to allow userspace(Xorg) to enable devices without doing foul direct access

[Ian Romanick]

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Peter Jones wrote:
> On Thu, 2006-05-04 at 17:38 -0400, Jon Smirl wrote:
> 
>># cd /sys/bus/pci/devices/0000:01:00.0
>># echo 1 >rom
>># hexdump -C rom
>>
>>As far as I know this works on every platform, not just the PC one.
> 
> Yep, you're right, this works.  So we don't necessarily need it for the
> vbetool case.  X still could use it though, instead of their scary
> poke-at-memory way.

Dave Airlie recently changed X to use sysfs for reading ROMs.  I'm also
working on some changes to eliminate nearly all of the PCI bus poking
that X does.  Search for "PCI rework" or "libpciaccess" in the xorg list
archives.
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