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Linux kernel mirror (for testing)
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linux
1#ifndef __DRM_GEM_CMA_HELPER_H__
2#define __DRM_GEM_CMA_HELPER_H__
3
4struct drm_gem_cma_object {
5 struct drm_gem_object base;
6 dma_addr_t paddr;
7 struct sg_table *sgt;
8
9 /* For objects with DMA memory allocated by GEM CMA */
10 void *vaddr;
11};
12
13static inline struct drm_gem_cma_object *
14to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
15{
16 return container_of(gem_obj, struct drm_gem_cma_object, base);
17}
18
19/* free gem object. */
20void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
21
22/* create memory region for drm framebuffer. */
23int drm_gem_cma_dumb_create(struct drm_file *file_priv,
24 struct drm_device *drm, struct drm_mode_create_dumb *args);
25
26/* map memory region for drm framebuffer to user space. */
27int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
28 struct drm_device *drm, uint32_t handle, uint64_t *offset);
29
30/* set vm_flags and we can change the vm attribute to other one at here. */
31int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
32
33/* allocate physical memory. */
34struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
35 unsigned int size);
36
37extern const struct vm_operations_struct drm_gem_cma_vm_ops;
38
39#ifdef CONFIG_DEBUG_FS
40void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m);
41#endif
42
43struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj);
44struct drm_gem_object *
45drm_gem_cma_prime_import_sg_table(struct drm_device *dev, size_t size,
46 struct sg_table *sgt);
47int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
48 struct vm_area_struct *vma);
49void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
50void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
51
52#endif /* __DRM_GEM_CMA_HELPER_H__ */