diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 55 |
1 files changed, 29 insertions, 26 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 67998e8a2d70..32ff571672b4 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3124,9 +3124,6 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) uint32_t flush_domains = 0; uint32_t old_read_domains; - BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU); - BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU); - intel_mark_busy(dev, obj); /* @@ -3298,7 +3295,6 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); struct drm_i915_gem_relocation_entry __user *user_relocs; int i, ret; - void __iomem *reloc_page; bool need_fence; need_fence = entry->flags & EXEC_OBJECT_NEEDS_FENCE && @@ -3342,8 +3338,6 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, struct drm_i915_gem_relocation_entry reloc; struct drm_gem_object *target_obj; struct drm_i915_gem_object *target_obj_priv; - uint32_t reloc_val, reloc_offset; - uint32_t __iomem *reloc_entry; ret = __copy_from_user_inatomic(&reloc, user_relocs+i, @@ -3469,27 +3463,36 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, return -EINVAL; } - ret = i915_gem_object_set_to_gtt_domain(obj, 1); - if (ret != 0) { - drm_gem_object_unreference(target_obj); - i915_gem_object_unpin(obj); - return ret; - } + reloc.delta += target_obj_priv->gtt_offset; + if (obj->write_domain == I915_GEM_DOMAIN_CPU) { + uint32_t page_offset = reloc.offset & ~PAGE_MASK; + char *vaddr; - /* Map the page containing the relocation we're going to - * perform. - */ - reloc_offset = obj_priv->gtt_offset + reloc.offset; - reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, - (reloc_offset & - ~(PAGE_SIZE - 1)), - KM_USER0); - reloc_entry = (uint32_t __iomem *)(reloc_page + - (reloc_offset & (PAGE_SIZE - 1))); - reloc_val = target_obj_priv->gtt_offset + reloc.delta; - - writel(reloc_val, reloc_entry); - io_mapping_unmap_atomic(reloc_page, KM_USER0); + vaddr = kmap_atomic(obj_priv->pages[reloc.offset >> PAGE_SHIFT], KM_USER0); + *(uint32_t *)(vaddr + page_offset) = reloc.delta; + kunmap_atomic(vaddr, KM_USER0); + } else { + uint32_t __iomem *reloc_entry; + void __iomem *reloc_page; + int ret; + + ret = i915_gem_object_set_to_gtt_domain(obj, 1); + if (ret) { + drm_gem_object_unreference(target_obj); + i915_gem_object_unpin(obj); + return ret; + } + + /* Map the page containing the relocation we're going to perform. */ + reloc.offset += obj_priv->gtt_offset; + reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, + reloc.offset & PAGE_MASK, + KM_USER0); + reloc_entry = (uint32_t __iomem *) + (reloc_page + (reloc.offset & ~PAGE_MASK)); + iowrite32(reloc.delta, reloc_entry); + io_mapping_unmap_atomic(reloc_page, KM_USER0); + } drm_gem_object_unreference(target_obj); } |