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    SubjectRe: AGP bogosities
    Date
    On Thursday, March 10, 2005 8:30 pm, Benjamin Herrenschmidt wrote:
    > On Thu, 2005-03-10 at 20:02 -0800, Jesse Barnes wrote:
    > > On Thursday, March 10, 2005 6:38 pm, Benjamin Herrenschmidt wrote:
    > > > That one is even worse... from what I see in your lspci output, you
    > > > have no bridge with AGP capability at all, and the various AGP devices
    > > > are all siblings...
    > >
    > > Both of the video cards are sitting on agp busses in agp slots hooked up
    > > to host to agp bridges.
    > >
    > > > Are you sure there is any real AGP slot in there ?
    > >
    > > Yes :)
    >
    > Well, according to your lspci, none of the bridges exposes a device with
    > AGP capabilities...

    There are no bridges listed in my lspci output, that's probably why. :)

    > It looks like you aren't exposing the host "self"
    > device on the bus. Do you have an AGP driver ? If yes, it certainly
    > can't use any of the generic code anyway ...

    Right, it's a special agp driver, sgi-agp.c.

    > I still think that the matching between a bridge and a card should be a
    > bridge callback (with eventually a generic one that works for whatever
    > x86 are around) so that the bridge driver can deal with funky layouts. I
    > have no time to toy with this at the moment though ;)

    Mike, does this sound ok? Maybe you could hack something together?

    Thanks,
    Jesse
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