gpu/drm/drm_gem_shmem_helper.c

55 	struct drm_gem_object *obj;
61 		obj = dev->driver->gem_create_object(dev, size);
62 		if (IS_ERR(obj))
63 			return ERR_CAST(obj);
64 		shmem = to_drm_gem_shmem_obj(obj);
69 		obj = &shmem->base;
72 	if (!obj->funcs)
73 		obj->funcs = &drm_gem_shmem_funcs;
76 		drm_gem_private_object_init(dev, obj, size);
79 		ret = drm_gem_object_init(dev, obj, size);
82 		drm_gem_private_object_fini(obj);
86 	ret = drm_gem_create_mmap_offset(obj);
100 		mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER |
107 	drm_gem_object_release(obj);
109 	kfree(obj);
139 	struct drm_gem_object *obj = &shmem->base;
141 	if (obj->import_attach) {
142 		drm_prime_gem_destroy(obj, shmem->sgt);
146 		drm_WARN_ON(obj->dev, shmem->vmap_use_count);
149 			dma_unmap_sgtable(obj->dev->dev, shmem->sgt,
157 		drm_WARN_ON(obj->dev, shmem->pages_use_count);
162 	drm_gem_object_release(obj);
169 	struct drm_gem_object *obj = &shmem->base;
177 	pages = drm_gem_get_pages(obj);
179 		drm_dbg_kms(obj->dev, "Failed to get pages (%ld)\n",
192 		set_pages_array_wc(pages, obj->size >> PAGE_SHIFT);
208 	struct drm_gem_object *obj = &shmem->base;
212 	if (drm_WARN_ON_ONCE(obj->dev, !shmem->pages_use_count))
220 		set_pages_array_wb(shmem->pages, obj->size >> PAGE_SHIFT);
223 	drm_gem_put_pages(obj, shmem->pages,
262 	struct drm_gem_object *obj = &shmem->base;
265 	drm_WARN_ON(obj->dev, obj->import_attach);
286 	struct drm_gem_object *obj = &shmem->base;
288 	drm_WARN_ON(obj->dev, obj->import_attach);
314 	struct drm_gem_object *obj = &shmem->base;
317 	if (obj->import_attach) {
318 		ret = dma_buf_vmap(obj->import_attach->dmabuf, map);
320 			if (drm_WARN_ON(obj->dev, map->is_iomem)) {
321 				dma_buf_vunmap(obj->import_attach->dmabuf, map);
341 		shmem->vaddr = vmap(shmem->pages, obj->size >> PAGE_SHIFT,
350 		drm_dbg_kms(obj->dev, "Failed to vmap pages, error %d\n", ret);
357 	if (!obj->import_attach)
381 	struct drm_gem_object *obj = &shmem->base;
383 	if (obj->import_attach) {
384 		dma_buf_vunmap(obj->import_attach->dmabuf, map);
388 		if (drm_WARN_ON_ONCE(obj->dev, !shmem->vmap_use_count))
415 	 * Allocate an id of idr table where the obj is registered
443 	struct drm_gem_object *obj = &shmem->base;
444 	struct drm_device *dev = obj->dev;
448 	drm_WARN_ON(obj->dev, !drm_gem_shmem_is_purgeable(shmem));
459 	drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping);
460 	drm_gem_free_mmap_offset(obj);
467 	shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1);
469 	invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 0, (loff_t)-1);
513 	struct drm_gem_object *obj = vma->vm_private_data;
514 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
515 	loff_t num_pages = obj->size >> PAGE_SHIFT;
526 	    drm_WARN_ON_ONCE(obj->dev, !shmem->pages) ||
542 	struct drm_gem_object *obj = vma->vm_private_data;
543 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
545 	drm_WARN_ON(obj->dev, obj->import_attach);
554 	if (!drm_WARN_ON_ONCE(obj->dev, !shmem->pages_use_count))
564 	struct drm_gem_object *obj = vma->vm_private_data;
565 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
594 	struct drm_gem_object *obj = &shmem->base;
597 	if (obj->import_attach) {
605 		ret = dma_buf_mmap(obj->dma_buf, vma, 0);
609 			drm_gem_object_put(obj);
664 	struct drm_gem_object *obj = &shmem->base;
666 	drm_WARN_ON(obj->dev, obj->import_attach);
668 	return drm_prime_pages_to_sg(obj->dev, shmem->pages, obj->size >> PAGE_SHIFT);
674 	struct drm_gem_object *obj = &shmem->base;
681 	drm_WARN_ON(obj->dev, obj->import_attach);
693 	ret = dma_map_sgtable(obj->dev->dev, sgt, DMA_BIDIRECTIONAL, 0);