On Mon, Jan 22, 2024 at 03:09:23PM +0000, Shankar, Uma wrote: > > > > -----Original Message----- > > From: Intel-gfx <intel-gfx-boun...@lists.freedesktop.org> On Behalf Of Ville > > Syrjala > > Sent: Tuesday, January 16, 2024 1:26 PM > > To: intel-gfx@lists.freedesktop.org > > Subject: [PATCH v3 09/16] drm/i915: Fix MTL initial plane readout > > > > From: Ville Syrjälä <ville.syrj...@linux.intel.com> > > > > MTL stolen memory looks more like local memory, so use the (now fixed) lmem > > path when doing the initial plane readout. > > Looks Good to me. > Reviewed-by: Uma Shankar <uma.shan...@intel.com> > > > Cc: Paz Zcharya <p...@chromium.org> > > Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Hi Ville, Thank you so much for this incredible series. It solves the issue regarding MTL initial plane readout that Andrzej Hajda and I worked on in https://patchwork.freedesktop.org/patch/570811/?series=127130&rev=2 In addition, it solved the issue with the new GOP. I tested it on two different devices with Meteor Lake and it worked perfectly: no i915 errors, no flickers or observable issues. Tested-by: Paz Zcharya <p...@chromium.org> > > --- > > .../drm/i915/display/intel_plane_initial.c | 25 +++++++++++++------ > > 1 file changed, 18 insertions(+), 7 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c > > b/drivers/gpu/drm/i915/display/intel_plane_initial.c > > index db594ccf0323..c72d4cacf631 100644 > > --- a/drivers/gpu/drm/i915/display/intel_plane_initial.c > > +++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c > > @@ -59,7 +59,7 @@ initial_plane_vma(struct drm_i915_private *i915, > > return NULL; > > > > base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); > > - if (IS_DGFX(i915)) { > > + if (IS_DGFX(i915) || HAS_LMEMBAR_SMEM_STOLEN(i915)) { > > gen8_pte_t __iomem *gte = to_gt(i915)->ggtt->gsm; > > gen8_pte_t pte; > > > > @@ -73,11 +73,20 @@ initial_plane_vma(struct drm_i915_private *i915, > > } > > > > phys_base = pte & GEN12_GGTT_PTE_ADDR_MASK; > > - mem = i915->mm.regions[INTEL_REGION_LMEM_0]; > > + > > + if (IS_DGFX(i915)) > > + mem = i915->mm.regions[INTEL_REGION_LMEM_0]; > > + else > > + mem = i915->mm.stolen_region; > > + if (!mem) { > > + drm_dbg_kms(&i915->drm, > > + "Initial plane memory region not > > initialized\n"); > > + return NULL; > > + } > > > > /* > > - * We don't currently expect this to ever be placed in the > > - * stolen portion. > > + * On lmem we don't currently expect this to > > + * ever be placed in the stolen portion. > > */ > > if (phys_base < mem->region.start || phys_base > mem- > > >region.end) { > > drm_err(&i915->drm, > > @@ -94,11 +103,13 @@ initial_plane_vma(struct drm_i915_private *i915, > > } else { > > phys_base = base; > > mem = i915->mm.stolen_region; > > + if (!mem) { > > + drm_dbg_kms(&i915->drm, > > + "Initial plane memory region not > > initialized\n"); > > + return NULL; > > + } > > } > > > > - if (!mem) > > - return NULL; > > - > > size = round_up(plane_config->base + plane_config->size, > > mem->min_page_size); > > size -= base; > > -- > > 2.41.0 >
