[clug] Direct access to PCI address from userspace.

[Martijn van Oosterhout]

IIRC, you mmap() /dev/mem or /proc/mem or something along those lines.

The X server uses /dev/mem.

On Sat, Feb 07, 2004 at 08:38:55PM +1100, Brad Hards wrote:
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> I'm trying to figure out how to screw around with my video chip. I'd like to 
> be able to read from a specific hardware address. I know I need iopl(3), and 
> for an IO mapped device I need inw() or similar. 
> 
> How do I access a memory mapped hardware address?
> 
> Brad
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-- 
Martijn van Oosterhout   <kleptog at svana.org>   http://svana.org/kleptog/
> (... have gone from d-i being barely usable even by its developers
> anywhere, to being about 20% done. Sweet. And the last 80% usually takes
> 20% of the time, too, right?) -- Anthony Towns, debian-devel-announce
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