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. 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
