Re: VGA PCI IO port reservations

From: Russell King (rmk@arm.linux.org.uk)
Date: Fri Nov 17 2000 - 12:11:28 EST


Jeff Garzik writes:
> Dig through the video card docs, even older ISA video cards let you
> disable I/O decoding on all but a few ports, and/or relocate the ports
> it does use to other areas. Different with every video card, of course,
> but most of them can do this to a greater or lesser extent.

Unfortunately, when you start thinking about x86 and running the BIOSes
to (re-)initialise VGA cards back to text mode, they don't take it well
if you do this sort of messing.

However, I believe that my problem is sorted by use of that function from
pci-i386.c.

Thanks to people who helped.
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