| /* |
| * 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; |
| |
| enum dma_data_direction; |
| |
| struct drm_device; |
| struct drm_gem_object; |
| struct drm_file; |
| |
| struct device; |
| |
| /* 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); |
| 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); |
| void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf); |
| void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr); |
| |
| 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 page **pages, unsigned int nr_pages); |
| struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj, |
| int flags); |
| |
| /* helper functions for importing */ |
| 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_addr_arrays(struct sg_table *sgt, struct page **pages, |
| dma_addr_t *addrs, int max_pages); |
| |
| |
| #endif /* __DRM_PRIME_H__ */ |