include/drm/drm_gem_cma_helper.h

   1 #ifndef __DRM_GEM_CMA_HELPER_H__
   2 #define __DRM_GEM_CMA_HELPER_H__
   3
   4 #include <drm/drmP.h>
   5
   6 struct drm_gem_cma_object {
   7         struct drm_gem_object base;
   8         dma_addr_t paddr;
   9         struct sg_table *sgt;
  10
  11         /* For objects with DMA memory allocated by GEM CMA */
  12         void *vaddr;
  13 };
  14
  15 static inline struct drm_gem_cma_object *
  16 to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
  17 {
  18         return container_of(gem_obj, struct drm_gem_cma_object, base);
  19 }
  20
  21 /* free gem object. */
  22 void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
  23
  24 /* create memory region for drm framebuffer. */
  25 int drm_gem_cma_dumb_create(struct drm_file *file_priv,
  26                 struct drm_device *drm, struct drm_mode_create_dumb *args);
  27
  28 /* map memory region for drm framebuffer to user space. */
  29 int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
  30                 struct drm_device *drm, uint32_t handle, uint64_t *offset);
  31
  32 /* set vm_flags and we can change the vm attribute to other one at here. */
  33 int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
  34
  35 /* allocate physical memory. */
  36 struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
  37                 unsigned int size);
  38
  39 extern const struct vm_operations_struct drm_gem_cma_vm_ops;
  40
  41 #ifdef CONFIG_DEBUG_FS
  42 void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m);
  43 #endif
  44
  45 struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj);
  46 struct drm_gem_object *
  47 drm_gem_cma_prime_import_sg_table(struct drm_device *dev, size_t size,
  48                                   struct sg_table *sgt);
  49 int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
  50                            struct vm_area_struct *vma);
  51 void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
  52 void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
  53
  54 #endif /* __DRM_GEM_CMA_HELPER_H__ */