Subject: Re: looking for devices on PCI bus [II]
To: Jason R Thorpe <email@example.com>
From: Thor Lancelot Simon <firstname.lastname@example.org>
Date: 05/03/2001 21:12:47
On Thu, May 03, 2001 at 04:44:54PM -0700, Jason R Thorpe wrote:
> On Thu, May 03, 2001 at 11:33:34PM -0000, email@example.com wrote:
> > What if the machine has muliple, independent something-PCI bridges?
> There's no reason, in this case, to look at a device in another
> separate PCI bus heirarchy.
Maybe not in *this* case, but...
...VIA makes at least two chipsets in which an AGP video controller (IOW,
a device on a *second* PCI bus) is integrated into the northbridge (which
is a device on the *first* PCI bus). What if they changed the video frob
(as they've changed the IDE frob) but didn't change its own device ID? The
situation is precisely analogous to what they did with their pciide, but
now there _is_ a second bus involved. :-(
Thor Lancelot Simon firstname.lastname@example.org
And now he couldn't remember when this passion had flown, leaving him so
foolish and bewildered and astray: can any man?