i915/gem/i915_gem_phys.c

21 static int i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj)
23 	struct address_space *mapping = obj->base.filp->f_mapping;
24 	struct drm_i915_private *i915 = to_i915(obj->base.dev);
33 	if (overflows_type(obj->base.size, sg->length))
36 	if (GEM_WARN_ON(i915_gem_object_needs_bit17_swizzle(obj)))
44 	vaddr = dma_alloc_coherent(obj->base.dev->dev,
45 				   roundup_pow_of_two(obj->base.size),
59 	sg->length = obj->base.size;
63 	sg_dma_len(sg) = obj->base.size;
66 	for (i = 0; i < obj->base.size / PAGE_SIZE; i++) {
83 	obj->mem_flags &= ~I915_BO_FLAG_STRUCT_PAGE;
84 	__i915_gem_object_set_pages(obj, st);
91 	dma_free_coherent(obj->base.dev->dev,
92 			  roundup_pow_of_two(obj->base.size),
98 i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj,
104 	__i915_gem_object_release_shmem(obj, pages, false);
106 	if (obj->mm.dirty) {
107 		struct address_space *mapping = obj->base.filp->f_mapping;
111 		for (i = 0; i < obj->base.size / PAGE_SIZE; i++) {
122 			if (obj->mm.madv == I915_MADV_WILLNEED)
128 		obj->mm.dirty = false;
134 	dma_free_coherent(obj->base.dev->dev,
135 			  roundup_pow_of_two(obj->base.size),
139 int i915_gem_object_pwrite_phys(struct drm_i915_gem_object *obj,
142 	void *vaddr = sg_page(obj->mm.pages->sgl) + args->offset;
144 	struct drm_i915_private *i915 = to_i915(obj->base.dev);
147 	err = i915_gem_object_wait(obj,
158 	i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
166 	i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
170 int i915_gem_object_pread_phys(struct drm_i915_gem_object *obj,
173 	void *vaddr = sg_page(obj->mm.pages->sgl) + args->offset;
177 	err = i915_gem_object_wait(obj,
190 static int i915_gem_object_shmem_to_phys(struct drm_i915_gem_object *obj)
195 	pages = __i915_gem_object_unset_pages(obj);
197 	err = i915_gem_object_get_pages_phys(obj);
202 	__i915_gem_object_pin_pages(obj);
205 		i915_gem_object_put_pages_shmem(obj, pages);
207 	i915_gem_object_release_memory_region(obj);
212 		__i915_gem_object_set_pages(obj, pages);
216 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align)
220 	assert_object_held(obj);
222 	if (align > obj->base.size)
225 	if (!i915_gem_object_is_shmem(obj))
228 	if (!i915_gem_object_has_struct_page(obj))
231 	err = i915_gem_object_unbind(obj, I915_GEM_OBJECT_UNBIND_ACTIVE);
235 	if (obj->mm.madv != I915_MADV_WILLNEED)
238 	if (i915_gem_object_has_tiling_quirk(obj))
241 	if (obj->mm.mapping || i915_gem_object_has_pinned_pages(obj))
244 	if (unlikely(obj->mm.madv != I915_MADV_WILLNEED)) {
245 		drm_dbg(obj->base.dev,
250 	return i915_gem_object_shmem_to_phys(obj);