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