/* * Copyright © 2012 Red Hat * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * Copyright (c) 2009-2010, Code Aurora Forum. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * * Authors: *      Dave Airlie <airlied@redhat.com> *      Rob Clark <rob.clark@linaro.org> * */ #ifndef __DRM_PRIME_H__#define __DRM_PRIME_H__ #include <linux/mutex.h>#include <linux/rbtree.h>#include <linux/scatterlist.h> /** * struct drm_prime_file_private - per-file tracking for PRIME * * This just contains the internal &struct dma_buf and handle caches for each * &struct drm_file used by the PRIME core code. */struct drm_prime_file_private {/* private: */	struct mutex lock;	struct rb_root dmabufs;	struct rb_root handles;}; struct device; struct dma_buf_export_info;struct dma_buf;struct dma_buf_attachment;struct iosys_map; enum dma_data_direction; struct drm_device;struct drm_gem_object;struct drm_file; /* core prime functions */struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,				      struct dma_buf_export_info *exp_info);void drm_gem_dmabuf_release(struct dma_buf *dma_buf); int drm_gem_prime_fd_to_handle(struct drm_device *dev,			       struct drm_file *file_priv, int prime_fd, uint32_t *handle);struct dma_buf *drm_gem_prime_handle_to_dmabuf(struct drm_device *dev,			       struct drm_file *file_priv, uint32_t handle,			       uint32_t flags);int drm_gem_prime_handle_to_fd(struct drm_device *dev,			       struct drm_file *file_priv, uint32_t handle, uint32_t flags,			       int *prime_fd); /* helper functions for exporting */int drm_gem_map_attach(struct dma_buf *dma_buf,		       struct dma_buf_attachment *attach);void drm_gem_map_detach(struct dma_buf *dma_buf,			struct dma_buf_attachment *attach);struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,				     enum dma_data_direction dir);void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,			   struct sg_table *sgt,			   enum dma_data_direction dir);int drm_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct iosys_map *map);void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct iosys_map *map); int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma); struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,				       struct page **pages, unsigned int nr_pages);struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj,				     int flags); unsigned long drm_prime_get_contiguous_size(struct sg_table *sgt); /* helper functions for importing */bool drm_gem_is_prime_exported_dma_buf(struct drm_device *dev,				       struct dma_buf *dma_buf); struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev,						struct dma_buf *dma_buf,						struct device *attach_dev);struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,					    struct dma_buf *dma_buf); void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); int drm_prime_sg_to_page_array(struct sg_table *sgt, struct page **pages,			       int max_pages);int drm_prime_sg_to_dma_addr_array(struct sg_table *sgt, dma_addr_t *addrs,				   int max_pages); #endif /* __DRM_PRIME_H__ */