45 строки
1.4 KiB
C
45 строки
1.4 KiB
C
#ifndef __DRM_GEM_CMA_HELPER_H__
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#define __DRM_GEM_CMA_HELPER_H__
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struct drm_gem_cma_object {
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struct drm_gem_object base;
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dma_addr_t paddr;
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void *vaddr;
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};
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static inline struct drm_gem_cma_object *
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to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
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{
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return container_of(gem_obj, struct drm_gem_cma_object, base);
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}
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/* free gem object. */
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void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
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/* create memory region for drm framebuffer. */
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int drm_gem_cma_dumb_create(struct drm_file *file_priv,
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struct drm_device *drm, struct drm_mode_create_dumb *args);
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/* map memory region for drm framebuffer to user space. */
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int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
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struct drm_device *drm, uint32_t handle, uint64_t *offset);
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/* set vm_flags and we can change the vm attribute to other one at here. */
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int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
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/*
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* destroy memory region allocated.
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* - a gem handle and physical memory region pointed by a gem object
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* would be released by drm_gem_handle_delete().
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*/
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int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
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struct drm_device *drm, unsigned int handle);
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/* allocate physical memory. */
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struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
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unsigned int size);
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extern const struct vm_operations_struct drm_gem_cma_vm_ops;
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#endif /* __DRM_GEM_CMA_HELPER_H__ */
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