diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gtt.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c index 4fbed27ef0ec..86f73fe558ca 100644 --- a/drivers/gpu/drm/i915/gt/intel_gtt.c +++ b/drivers/gpu/drm/i915/gt/intel_gtt.c @@ -63,6 +63,9 @@ struct drm_i915_gem_object *alloc_pt_lmem(struct i915_address_space *vm, int sz) if (!IS_ERR(obj)) { obj->base.resv = i915_vm_resv_get(vm); obj->shares_resv_from = vm; + + if (vm->fpriv) + i915_drm_client_add_object(vm->fpriv->client, obj); } return obj; @@ -84,6 +87,9 @@ struct drm_i915_gem_object *alloc_pt_dma(struct i915_address_space *vm, int sz) if (!IS_ERR(obj)) { obj->base.resv = i915_vm_resv_get(vm); obj->shares_resv_from = vm; + + if (vm->fpriv) + i915_drm_client_add_object(vm->fpriv->client, obj); } return obj; @@ -95,6 +101,16 @@ int map_pt_dma(struct i915_address_space *vm, struct drm_i915_gem_object *obj) void *vaddr; type = intel_gt_coherent_map_type(vm->gt, obj, true); + /* + * FIXME: It is suspected that some Address Translation Service (ATS) + * issue on IOMMU is causing CAT errors to occur on some MTL workloads. + * Applying a write barrier to the ppgtt set entry functions appeared + * to have no effect, so we must temporarily use I915_MAP_WC here on + * MTL until a proper ATS solution is found. + */ + if (IS_METEORLAKE(vm->i915)) + type = I915_MAP_WC; + vaddr = i915_gem_object_pin_map_unlocked(obj, type); if (IS_ERR(vaddr)) return PTR_ERR(vaddr); @@ -109,6 +125,16 @@ int map_pt_dma_locked(struct i915_address_space *vm, struct drm_i915_gem_object void *vaddr; type = intel_gt_coherent_map_type(vm->gt, obj, true); + /* + * FIXME: It is suspected that some Address Translation Service (ATS) + * issue on IOMMU is causing CAT errors to occur on some MTL workloads. + * Applying a write barrier to the ppgtt set entry functions appeared + * to have no effect, so we must temporarily use I915_MAP_WC here on + * MTL until a proper ATS solution is found. + */ + if (IS_METEORLAKE(vm->i915)) + type = I915_MAP_WC; + vaddr = i915_gem_object_pin_map(obj, type); if (IS_ERR(vaddr)) return PTR_ERR(vaddr); |