在 2022-02-14星期一的 11:07 -0500，Ilia Mirkin写道： > I'm not saying this is wrong, but could you file a bug at > gitlab.freedesktop.org/drm/nouveau/-/issues and include the VBIOS > (/sys/kernel/debug/dri/0/vbios.rom)? That would make it easier to > review the full situation. Created at https://gitlab.freedesktop.org/drm/nouveau/-/issues/158 . > > On Mon, Feb 14, 2022 at 11:03 AM Icenowy Zheng <icenowy@xxxxxxx> wrote: > > > > On PowerBook6,1 (PowerBook G4 867 12") HWSQ entry 0 (which is > > currently > > always used by nouveau) fails, but the BIOS declares 2 HWSQ entries > > and > > entry 1 works. > > > > Add a quirk to use HWSQ entry 1. > > > > Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx> > > --- > > drivers/gpu/drm/nouveau/nouveau_bios.c | 7 +++++++ > > 1 file changed, 7 insertions(+) > > > > diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c > > b/drivers/gpu/drm/nouveau/nouveau_bios.c > > index e8c445eb11004..2691d0e0cf9f1 100644 > > --- a/drivers/gpu/drm/nouveau/nouveau_bios.c > > +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c > > @@ -1977,6 +1977,13 @@ static int load_nv17_hw_sequencer_ucode(struct > > drm_device *dev, > > if (!hwsq_offset) > > return 0; > > > > +#ifdef __powerpc__ > > + /* HWSQ entry 0 fails on PowerBook G4 867 12" (Al) */ > > + if (of_machine_is_compatible("PowerBook6,1")) > > + return load_nv17_hwsq_ucode_entry(dev, bios, > > + hwsq_offset + sz, > > 1); > > +#endif > > + > > /* always use entry 0? */ > > return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + > > sz, 0); > > } > > -- > > 2.30.2 > >
