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Add a generic PRIME GEM mmap function. v2: Fix link in docs (Daniel Vetter) Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181110145647.17580-3-noralf@tronnes.org
106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/*
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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 <airlied@redhat.com>
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* Rob Clark <rob.clark@linaro.org>
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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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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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struct device;
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struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
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struct drm_gem_object *obj,
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int flags);
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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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int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
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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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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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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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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_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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void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);
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void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
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int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
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int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
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dma_addr_t *addrs, int max_pages);
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struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
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void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
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#endif /* __DRM_PRIME_H__ */
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