On Tue, Jan 16, 2024 at 09:56:31AM +0200, Ville Syrjala wrote: > From: Ville Syrjälä <ville.syrj...@linux.intel.com> > > Declutter initial_plane_vma() a bit by pulling the lmem and smem > readout paths into their own functions. > > TODO: the smem path should still be fixed to get and validate > the dma address from the pte as well > > Cc: Paz Zcharya <p...@chromium.org> > Reviewed-by: Andrzej Hajda <andrzej.ha...@intel.com> > 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_display_types.h | 2 + > .../drm/i915/display/intel_plane_initial.c | 145 +++++++++++------- > 2 files changed, 95 insertions(+), 52 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h > b/drivers/gpu/drm/i915/display/intel_display_types.h > index ae2e8cff9d69..319ba7aed4fa 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_types.h > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h > @@ -780,6 +780,8 @@ struct intel_plane_state { > > struct intel_initial_plane_config { > struct intel_framebuffer *fb; > + struct intel_memory_region *mem; > + resource_size_t phys_base; > struct i915_vma *vma; > unsigned int tiling; > int size; > diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c > b/drivers/gpu/drm/i915/display/intel_plane_initial.c > index 48b74319f45c..78bff6181ceb 100644 > --- a/drivers/gpu/drm/i915/display/intel_plane_initial.c > +++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c > @@ -44,6 +44,93 @@ intel_reuse_initial_plane_obj(struct drm_i915_private > *i915, > return false; > } > > +static bool > +initial_plane_phys_lmem(struct drm_i915_private *i915, > + struct intel_initial_plane_config *plane_config) > +{ > + gen8_pte_t __iomem *gte = to_gt(i915)->ggtt->gsm; > + struct intel_memory_region *mem; > + dma_addr_t dma_addr; > + gen8_pte_t pte; > + u32 base; > + > + base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); > + > + gte += base / I915_GTT_PAGE_SIZE; > + > + pte = ioread64(gte); > + if (!(pte & GEN12_GGTT_PTE_LM)) { > + drm_err(&i915->drm, > + "Initial plane programming missing PTE_LM bit\n"); > + return false; > + } > + > + dma_addr = pte & GEN12_GGTT_PTE_ADDR_MASK; > + > + 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 false; > + } > + > + /* > + * On lmem we don't currently expect this to > + * ever be placed in the stolen portion. > + */ > + if (dma_addr < mem->region.start || dma_addr > mem->region.end) { > + drm_err(&i915->drm, > + "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 false; > + } > + > + drm_dbg(&i915->drm, > + "Using dma_addr=%pa, based on initial plane programming\n", > + &dma_addr); > + > + plane_config->phys_base = dma_addr - mem->region.start; > + plane_config->mem = mem; > + > + return true; > +} > + > +static bool > +initial_plane_phys_smem(struct drm_i915_private *i915, > + struct intel_initial_plane_config *plane_config) > +{ > + struct intel_memory_region *mem; > + u32 base; > + > + base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); > + > + mem = i915->mm.stolen_region; > + if (!mem) { > + drm_dbg_kms(&i915->drm, > + "Initial plane memory region not initialized\n"); > + return false; > + } > + > + /* FIXME get and validate the dma_addr from the PTE */ > + plane_config->phys_base = base; > + plane_config->mem = mem; > + > + return true; > +} > + > +static bool > +initial_plane_phys(struct drm_i915_private *i915, > + struct intel_initial_plane_config *plane_config) > +{ > + if (IS_DGFX(i915) || HAS_LMEMBAR_SMEM_STOLEN(i915)) > + return initial_plane_phys_lmem(i915, plane_config); > + else > + return initial_plane_phys_smem(i915, plane_config); > +} > + > static struct i915_vma * > initial_plane_vma(struct drm_i915_private *i915, > struct intel_initial_plane_config *plane_config) > @@ -58,59 +145,13 @@ initial_plane_vma(struct drm_i915_private *i915, > if (plane_config->size == 0) > return NULL; > > + if (!initial_plane_phys(i915, plane_config)) > + return NULL; > + > + phys_base = plane_config->phys_base; > + mem = plane_config->mem; > + > 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; > - > - pte = ioread64(gte); > - if (!(pte & GEN12_GGTT_PTE_LM)) { > - drm_err(&i915->drm, > - "Initial plane programming missing PTE_LM > bit\n"); > - return NULL; > - } > - > - dma_addr = pte & GEN12_GGTT_PTE_ADDR_MASK; > - > - 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; > - } > - > - /* > - * On lmem we don't currently expect this to > - * ever be placed in the stolen portion. > - */ > - if (dma_addr < mem->region.start || dma_addr > mem->region.end) > { > - drm_err(&i915->drm, > - "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 dma_addr=%pa, based on initial plane > programming\n", > - &dma_addr); > - > - phys_base = dma_addr - mem->region.start; > - } 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; > - } > - } > - > size = round_up(plane_config->base + plane_config->size, > mem->min_page_size); > size -= base; > -- > 2.41.0 >
