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70 lines
2.2 KiB
70 lines
2.2 KiB
#ifndef __DRM_GEM_CMA_HELPER_H__ |
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#define __DRM_GEM_CMA_HELPER_H__ |
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#include <drm/drmP.h> |
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#include <drm/drm_gem.h> |
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/** |
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* struct drm_gem_cma_object - GEM object backed by CMA memory allocations |
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* @base: base GEM object |
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* @paddr: physical address of the backing memory |
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* @sgt: scatter/gather table for imported PRIME buffers |
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* @vaddr: kernel virtual address of the backing memory |
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*/ |
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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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struct sg_table *sgt; |
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/* For objects with DMA memory allocated by GEM CMA */ |
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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_internal(struct drm_file *file_priv, |
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struct drm_device *drm, |
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struct drm_mode_create_dumb *args); |
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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, |
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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, u32 handle, |
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u64 *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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/* allocate physical memory */ |
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struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, |
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size_t size); |
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extern const struct vm_operations_struct drm_gem_cma_vm_ops; |
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#ifdef CONFIG_DEBUG_FS |
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void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m); |
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#endif |
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struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj); |
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struct drm_gem_object * |
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drm_gem_cma_prime_import_sg_table(struct drm_device *dev, |
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struct dma_buf_attachment *attach, |
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struct sg_table *sgt); |
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int drm_gem_cma_prime_mmap(struct drm_gem_object *obj, |
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struct vm_area_struct *vma); |
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void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj); |
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void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr); |
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#endif /* __DRM_GEM_CMA_HELPER_H__ */
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