diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_gem.h')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_gem.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_gem.h b/drivers/gpu/drm/mediatek/mtk_gem.h new file mode 100644 index 0000000000..66e5f154f6 --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_gem.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2015 MediaTek Inc. + */ + +#ifndef _MTK_GEM_H_ +#define _MTK_GEM_H_ + +#include <drm/drm_gem.h> + +/* + * mtk drm buffer structure. + * + * @base: a gem object. + * - a new handle to this gem object would be created + * by drm_gem_handle_create(). + * @cookie: the return value of dma_alloc_attrs(), keep it for dma_free_attrs() + * @kvaddr: kernel virtual address of gem buffer. + * @dma_addr: dma address of gem buffer. + * @dma_attrs: dma attributes of gem buffer. + * + * P.S. this object would be transferred to user as kms_bo.handle so + * user can access the buffer through kms_bo.handle. + */ +struct mtk_gem_obj { + struct drm_gem_object base; + void *cookie; + void *kvaddr; + dma_addr_t dma_addr; + unsigned long dma_attrs; + struct sg_table *sg; + struct page **pages; +}; + +#define to_mtk_gem_obj(x) container_of(x, struct mtk_gem_obj, base) + +void mtk_gem_free_object(struct drm_gem_object *gem); +struct mtk_gem_obj *mtk_gem_create(struct drm_device *dev, size_t size, + bool alloc_kmap); +int mtk_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev, + struct drm_mode_create_dumb *args); +struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj); +struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, struct sg_table *sg); +int mtk_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map); +void mtk_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map); + +#endif |