LXR linux/include/drm/drm_gem_cma

   1#ifndef __DRM_GEM_CMA_HELPER_H__
   2#define __DRM_GEM_CMA_HELPER_H__
   3
   4#include <drm/drmP.h>
   5#include <drm/drm_gem.h>
   6
   7/**
   8 * struct drm_gem_cma_object - GEM object backed by CMA memory allocations
   9 * @base: base GEM object
  10 * @paddr: physical address of the backing memory
  11 * @sgt: scatter/gather table for imported PRIME buffers
  12 * @vaddr: kernel virtual address of the backing memory
  13 */
  14struct drm_gem_cma_object {
  15        struct drm_gem_object base;
  16        dma_addr_t paddr;
  17        struct sg_table *sgt;
  18
  19        /* For objects with DMA memory allocated by GEM CMA */
  20        void *vaddr;
  21};
  22
  23static inline struct drm_gem_cma_object *
  24to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
  25{
  26        return container_of(gem_obj, struct drm_gem_cma_object, base);
  27}
  28
  29/* free GEM object */
  30void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
  31
  32/* create memory region for DRM framebuffer */
  33int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv,
  34                                     struct drm_device *drm,
  35                                     struct drm_mode_create_dumb *args);
  36
  37/* create memory region for DRM framebuffer */
  38int drm_gem_cma_dumb_create(struct drm_file *file_priv,
  39                            struct drm_device *drm,
  40                            struct drm_mode_create_dumb *args);
  41
  42/* map memory region for DRM framebuffer to user space */
  43int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
  44                                struct drm_device *drm, u32 handle,
  45                                u64 *offset);
  46
  47/* set vm_flags and we can change the VM attribute to other one at here */
  48int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
  49
  50/* allocate physical memory */
  51struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
  52                                              size_t size);
  53
  54extern const struct vm_operations_struct drm_gem_cma_vm_ops;
  55
  56#ifdef CONFIG_DEBUG_FS
  57void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m);
  58#endif
  59
  60struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj);
  61struct drm_gem_object *
  62drm_gem_cma_prime_import_sg_table(struct drm_device *dev,
  63                                  struct dma_buf_attachment *attach,
  64                                  struct sg_table *sgt);
  65int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
  66                           struct vm_area_struct *vma);
  67void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
  68void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
  69
  70#endif /* __DRM_GEM_CMA_HELPER_H__ */
  71