On Tue, Jan 16, 2024 at 09:56:30AM +0200, Ville Syrjala wrote: > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > The address we read from the PTE is a dma address, not a physical > address. Rename the variable to say so. > > Cc: Paz Zcharya <pazz@xxxxxxxxxxxx> > Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> 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 <pazz@xxxxxxxxxxxx> > --- > .../gpu/drm/i915/display/intel_plane_initial.c | 15 ++++++++------- > 1 file changed, 8 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 c72d4cacf631..48b74319f45c 100644 > --- a/drivers/gpu/drm/i915/display/intel_plane_initial.c > +++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c > @@ -61,6 +61,7 @@ initial_plane_vma(struct drm_i915_private *i915, > base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); > if (IS_DGFX(i915) || HAS_LMEMBAR_SMEM_STOLEN(i915)) { > gen8_pte_t __iomem *gte = to_gt(i915)->ggtt->gsm; > + dma_addr_t dma_addr; > gen8_pte_t pte; > > gte += base / I915_GTT_PAGE_SIZE; > @@ -72,7 +73,7 @@ initial_plane_vma(struct drm_i915_private *i915, > return NULL; > } > > - phys_base = pte & GEN12_GGTT_PTE_ADDR_MASK; > + dma_addr = pte & GEN12_GGTT_PTE_ADDR_MASK; > > if (IS_DGFX(i915)) > mem = i915->mm.regions[INTEL_REGION_LMEM_0]; > @@ -88,18 +89,18 @@ initial_plane_vma(struct drm_i915_private *i915, > * 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) { > + if (dma_addr < mem->region.start || dma_addr > mem->region.end) { > drm_err(&i915->drm, > - "Initial plane programming using invalid range, phys_base=%pa (%s [%pa-%pa])\n", > - &phys_base, mem->region.name, &mem->region.start, &mem->region.end); > + "Initial plane programming using invalid range, dma_addr=%pa (%s [%pa-%pa])\n", > + &dma_addr, mem->region.name, &mem->region.start, &mem->region.end); > return NULL; > } > > drm_dbg(&i915->drm, > - "Using phys_base=%pa, based on initial plane programming\n", > - &phys_base); > + "Using dma_addr=%pa, based on initial plane programming\n", > + &dma_addr); > > - phys_base -= mem->region.start; > + phys_base = dma_addr - mem->region.start; > } else { > phys_base = base; > mem = i915->mm.stolen_region; > -- > 2.41.0 >
