2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author:Mark Yao <mark.yao@rock-chips.com>
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.
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.
15 #ifndef _ROCKCHIP_DRM_GEM_H
16 #define _ROCKCHIP_DRM_GEM_H
18 #define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base)
20 enum rockchip_gem_buf_type {
21 ROCKCHIP_GEM_BUF_TYPE_CMA,
22 ROCKCHIP_GEM_BUF_TYPE_SHMEM,
25 struct rockchip_gem_object {
26 struct drm_gem_object base;
28 enum rockchip_gem_buf_type buf_type;
33 dma_addr_t dma_handle;
35 /* Used when IOMMU is disabled */
36 struct dma_attrs dma_attrs;
38 #ifdef CONFIG_DRM_DMA_SYNC
39 struct fence *acquire_fence;
40 atomic_t acquire_shared_count;
41 bool acquire_exclusive;
43 /* Used when IOMMU is enabled */
44 struct drm_mm_node mm;
45 unsigned long num_pages;
52 * rockchip drm GEM object linked list structure.
55 * @rockchip_gem_obj: struct rockchhip_gem_object that this entry points to.
57 struct rockchip_gem_object_node {
58 struct list_head list;
59 struct rockchip_gem_object *rockchip_gem_obj;
62 struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
63 struct drm_gem_object *
64 rockchip_gem_prime_import_sg_table(struct drm_device *dev,
65 struct dma_buf_attachment *attach,
67 void *rockchip_gem_prime_vmap(struct drm_gem_object *obj);
68 void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
70 /* drm driver mmap file operations */
71 int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma);
73 /* mmap a gem object to userspace. */
74 int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
75 struct vm_area_struct *vma);
77 struct rockchip_gem_object *
78 rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
79 bool alloc_kmap, unsigned int flags);
81 void rockchip_gem_free_object(struct drm_gem_object *obj);
83 int rockchip_gem_dumb_create(struct drm_file *file_priv,
84 struct drm_device *dev,
85 struct drm_mode_create_dumb *args);
86 int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
87 struct drm_device *dev, uint32_t handle,
90 * request gem object creation and buffer allocation as the size
91 * that it is calculated with framebuffer information such as width,
94 int rockchip_gem_create_ioctl(struct drm_device *dev, void *data,
95 struct drm_file *file_priv);
97 /* get buffer offset to map to user space. */
98 int rockchip_gem_map_offset_ioctl(struct drm_device *dev, void *data,
99 struct drm_file *file_priv);
101 int rockchip_gem_get_phys_ioctl(struct drm_device *dev, void *data,
102 struct drm_file *file_priv);
105 * acquire gem object for CPU access.
107 int rockchip_gem_cpu_acquire_ioctl(struct drm_device *dev, void* data,
108 struct drm_file *file_priv);
110 * release gem object after CPU access.
112 int rockchip_gem_cpu_release_ioctl(struct drm_device *dev, void* data,
113 struct drm_file *file_priv);
115 int rockchip_gem_prime_begin_cpu_access(struct drm_gem_object *obj,
116 size_t start, size_t len,
117 enum dma_data_direction dir);
119 void rockchip_gem_prime_end_cpu_access(struct drm_gem_object *obj,
120 size_t start, size_t len,
121 enum dma_data_direction dir);
123 #endif /* _ROCKCHIP_DRM_GEM_H */