tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author:Mark Yao <mark.yao@rock-chips.com>
4 *
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15#ifndef _ROCKCHIP_DRM_GEM_H
16#define _ROCKCHIP_DRM_GEM_H
17
18#define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base)
19
20struct rockchip_gem_object {
21 struct drm_gem_object base;
22 unsigned int flags;
23
24 void *kvaddr;
25 dma_addr_t dma_addr;
26 /* Used when IOMMU is disabled */
27 unsigned long dma_attrs;
28
29 /* Used when IOMMU is enabled */
30 struct drm_mm_node mm;
31 unsigned long num_pages;
32 struct page **pages;
33 struct sg_table *sgt;
34 size_t size;
35};
36
37struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
38struct drm_gem_object *
39rockchip_gem_prime_import_sg_table(struct drm_device *dev, size_t size,
40 struct sg_table *sgt);
41void *rockchip_gem_prime_vmap(struct drm_gem_object *obj);
42void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
43
44/* drm driver mmap file operations */
45int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma);
46
47/* mmap a gem object to userspace. */
48int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
49 struct vm_area_struct *vma);
50
51struct rockchip_gem_object *
52 rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
53 bool alloc_kmap);
54
55void rockchip_gem_free_object(struct drm_gem_object *obj);
56
57int rockchip_gem_dumb_create(struct drm_file *file_priv,
58 struct drm_device *dev,
59 struct drm_mode_create_dumb *args);
60#endif /* _ROCKCHIP_DRM_GEM_H */