On Thu, Apr 1, 2010 at 4:48 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: > On Thursday 01 April 2010, Alex Deucher wrote: >> On Thu, Apr 1, 2010 at 4:28 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: >> > On Thursday 01 April 2010, Alex Deucher wrote: >> >> On Thu, Apr 1, 2010 at 2:36 AM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote: >> >> > Alex Deucher wrote: >> >> >> On Wed, Mar 31, 2010 at 9:13 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: >> >> >>> On Tuesday 30 March 2010, Rafael J. Wysocki wrote: >> >> >>>> > PCI quirk: RS780/RS880: work around missing MSI initialization >> >> >>>> >> >> >>>> This one (commit a5ee4eb7541) broke OpenGL acceleration on my new test box >> >> >>>> which happens to have a RS780. >> >> > >> >> > So it's better to disable MSI unconditionally. >> >> > >> >> > Rafael, can you check if MSI works for the HDMI audio device? >> >> > (I'd guess it doesn't.) >> >> > >> >> >> I also have the attached patch queued in via Dave's tree to disable >> >> >> MSI on all IGP chips for the time being. >> >> > >> >> > This disables MSI only for the graphics device. I'd prefer to have >> >> > the quirk on its bridge so that MSI gets disabled for the HDMI audio >> >> > device too, to avoid having to duplicate this quirk in the snd-hda-intel >> >> > driver. >> >> > >> >> > ========== >> >> > >> >> > PCI quirk: RS780/RS880: disable MSI completely >> >> > >> >> > The missing initialization of the nb_cntl.strap_msi_enable does not seem >> >> > to be the only problem that prevents MSI, so that quirk is not >> >> > sufficient to enable MSI on all machines. To be safe, unconditionally >> >> > disable MSI for the internal graphics and HDMI audio on these chipsets. >> >> > >> >> > Signed-off-by: Clemens Ladisch <clemens@xxxxxxxxxx> >> >> >> >> Works fine here. >> >> >> >> Tested-by: Alex Deucher <alexdeucher@xxxxxxxxx> >> > >> > Unfortunately it doesn't work for me without the >> > >> > if ((rdev->family >= CHIP_RV380) && >> > (!(rdev->flags & RADEON_IS_IGP))) >> > >> > radeon quirk. >> >> what are your pci ids? > > 1022:960b > > I guess 1022 is AMD. > > OK, I'll try to add that. It's possible your oem has the wrong vendor id for the 0x9602 bridge. Alex > > Rafael > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
