Re: [patch 2.5] VGA IO on systems with multiple PCI IO domains

[Ivan Kokshaysky]

On Tue, Jan 28, 2003 at 06:23:15PM +0100, Benjamin Herrenschmidt wrote:
> Ok, if I understand properly, all we have to do on PPC is to implement a
> pci_request_legacy_resource() that will do the right thing for legacy
> VGA memory as well ?

Exactly.

> Then, please, check the return value of pci_request_legacy_resource()
> for getting to the VGA memory. Some machines (typically PowerMacs)
> simply don't give you a way to generate PCI cycles to those low memory
> addresses (you can't do VGA on those).

I agree, it certainly needs to be fixed.

The reason why I didn't it is that i386 has 0xa0000-0xbfffff region already
claimed (somewhere in arch code?), I haven't looked into this yet.

Ivan.