Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes: > Looking at gem_workarounds shows us that MMCD_MISC_CTRL is not restored > following a suspend-resume cycle. This implies that MMCD_MISC_CTRL is > not stored in the context, but is an ordinary register w/a that we need to > restore during init_hw. > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> > Cc: Oscar Mateo <oscar.mateo@xxxxxxxxx> Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_engine_cs.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c > index a28e2a864cf1..06044f1f48c8 100644 > --- a/drivers/gpu/drm/i915/intel_engine_cs.c > +++ b/drivers/gpu/drm/i915/intel_engine_cs.c > @@ -980,7 +980,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine) > GEN9_PBE_COMPRESSED_HASH_SELECTION); > WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7, > GEN9_SAMPLER_HASH_COMPRESSED_READ_ADDR); > - WA_SET_BIT(MMCD_MISC_CTRL, MMCD_PCLA | MMCD_HOTSPOT_EN); > + > + I915_WRITE(MMCD_MISC_CTRL, > + I915_READ(MMCD_MISC_CTRL) | > + MMCD_PCLA | > + MMCD_HOTSPOT_EN); > } > > /* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk,cfl */ > -- > 2.14.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
