[SeaBIOS] [PATCH] pci: capability scanning function'
Michael S. Tsirkin
mst at redhat.com
Wed Jul 6 20:13:02 CEST 2011
On Wed, Jul 06, 2011 at 05:43:34PM +0200, Gerd Hoffmann wrote:
> On 07/06/11 16:57, Michael S. Tsirkin wrote:
> >On Wed, Jul 06, 2011 at 05:03:21PM +0300, Michael S. Tsirkin wrote:
> >>Add pci_find_capability to scan capability list.
> >>Return 0 on error, capability offset if found.
> >>
> >>Signed-off-by: Michael S. Tsirkin<mst at redhat.com>
> >>
> >>---
> >>
> >>Not useful by itself, but should be handy if
> >>we ever want to look at capabilities such as pci express.
> >
> >Here's an example using slot register and
> >pci express register to figure out how many
> >expansion slots does a bridge have:
>
> Thanks, I'll use the bits for finetuning in the next version of the
> two-pass pci init patches.
>
> cheers,
> Gerd
BTw I don't think we need to make it a dependency of
that patchset, necessarily. Keeping it simple
also has certain appeal, and might make it easier
for management to figure out what is and isn't
supported.
--
MST
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