#ifndef __DRM_GEM_CMA_HELPER_H__ #define __DRM_GEM_CMA_HELPER_H__ #include <drm/drmP.h> #include <drm/drm_gem.h> /** * struct drm_gem_cma_object - GEM object backed by CMA memory allocations * @base: base GEM object * @paddr: physical address of the backing memory * @sgt: scatter/gather table for imported PRIME buffers * @vaddr: kernel virtual address of the backing memory */ struct drm_gem_cma_object { struct drm_gem_object base; dma_addr_t paddr; struct sg_table *sgt; /* For objects with DMA memory allocated by GEM CMA */ void *vaddr; }; static inline struct drm_gem_cma_object * to_drm_gem_cma_obj(struct drm_gem_object *gem_obj) { return container_of(gem_obj, struct drm_gem_cma_object, base); } /* free GEM object */ void drm_gem_cma_free_object(struct drm_gem_object *gem_obj); /* create memory region for DRM framebuffer */ int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv, struct drm_device *drm, struct drm_mode_create_dumb *args); /* create memory region for DRM framebuffer */ int drm_gem_cma_dumb_create(struct drm_file *file_priv, struct drm_device *drm, struct drm_mode_create_dumb *args); /* map memory region for DRM framebuffer to user space */ int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv, struct drm_device *drm, u32 handle, u64 *offset); /* set vm_flags and we can change the VM attribute to other one at here */ int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); /* allocate physical memory */ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, size_t size); extern const struct vm_operations_struct drm_gem_cma_vm_ops; #ifdef CONFIG_DEBUG_FS void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m); #endif struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object * drm_gem_cma_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sgt); int drm_gem_cma_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj); void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 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