mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
7698799f95
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
105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/*
|
|
* 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;
|
|
|
|
struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
|
|
struct drm_gem_object *obj,
|
|
int 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);
|
|
int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
|
|
struct drm_gem_object *drm_gem_prime_import(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);
|
|
|
|
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_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_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_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
|
|
|
|
int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
|
|
dma_addr_t *addrs, int max_pages);
|
|
struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
|
|
void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
|
|
|
|
|
|
#endif /* __DRM_PRIME_H__ */
|