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119f5173 CH |
1 | /* |
2 | * Copyright (c) 2015 MediaTek Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
14 | #ifndef _MTK_DRM_GEM_H_ | |
15 | #define _MTK_DRM_GEM_H_ | |
16 | ||
17 | #include <drm/drm_gem.h> | |
18 | ||
19 | /* | |
20 | * mtk drm buffer structure. | |
21 | * | |
22 | * @base: a gem object. | |
23 | * - a new handle to this gem object would be created | |
24 | * by drm_gem_handle_create(). | |
25 | * @cookie: the return value of dma_alloc_attrs(), keep it for dma_free_attrs() | |
26 | * @kvaddr: kernel virtual address of gem buffer. | |
27 | * @dma_addr: dma address of gem buffer. | |
28 | * @dma_attrs: dma attributes of gem buffer. | |
29 | * | |
30 | * P.S. this object would be transferred to user as kms_bo.handle so | |
31 | * user can access the buffer through kms_bo.handle. | |
32 | */ | |
33 | struct mtk_drm_gem_obj { | |
34 | struct drm_gem_object base; | |
35 | void *cookie; | |
36 | void *kvaddr; | |
37 | dma_addr_t dma_addr; | |
00085f1e | 38 | unsigned long dma_attrs; |
119f5173 CH |
39 | struct sg_table *sg; |
40 | }; | |
41 | ||
42 | #define to_mtk_gem_obj(x) container_of(x, struct mtk_drm_gem_obj, base) | |
43 | ||
44 | void mtk_drm_gem_free_object(struct drm_gem_object *gem); | |
45 | struct mtk_drm_gem_obj *mtk_drm_gem_create(struct drm_device *dev, size_t size, | |
46 | bool alloc_kmap); | |
47 | int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev, | |
48 | struct drm_mode_create_dumb *args); | |
49 | int mtk_drm_gem_dumb_map_offset(struct drm_file *file_priv, | |
50 | struct drm_device *dev, uint32_t handle, | |
51 | uint64_t *offset); | |
52 | int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); | |
53 | int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj, | |
54 | struct vm_area_struct *vma); | |
55 | struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj); | |
56 | struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev, | |
57 | struct dma_buf_attachment *attach, struct sg_table *sg); | |
58 | ||
59 | #endif |