Blame - src/kernel/linux/v4.19/include/drm/drm_prime.h - T800

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xj	b04a402	2021-11-25 15:01:52 +0800	[diff] [blame]	1	/*
				2	* Copyright © 2012 Red Hat
				3	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
				4	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
				5	* Copyright (c) 2009-2010, Code Aurora Forum.
				6	*
				7	* Permission is hereby granted, free of charge, to any person obtaining a
				8	* copy of this software and associated documentation files (the "Software"),
				9	* to deal in the Software without restriction, including without limitation
				10	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
				11	* and/or sell copies of the Software, and to permit persons to whom the
				12	* Software is furnished to do so, subject to the following conditions:
				13	*
				14	* The above copyright notice and this permission notice (including the next
				15	* paragraph) shall be included in all copies or substantial portions of the
				16	* Software.
				17	*
				18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
				19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
				20	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
				21	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
				22	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
				23	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
				24	* IN THE SOFTWARE.
				25	*
				26	* Authors:
				27	* Dave Airlie <airlied@redhat.com>
				28	* Rob Clark <rob.clark@linaro.org>
				29	*
				30	*/
				31
				32	#ifndef __DRM_PRIME_H__
				33	#define __DRM_PRIME_H__
				34
				35	#include <linux/mutex.h>
				36	#include <linux/rbtree.h>
				37	#include <linux/scatterlist.h>
				38
				39	/**
				40	* struct drm_prime_file_private - per-file tracking for PRIME
				41	*
				42	* This just contains the internal &struct dma_buf and handle caches for each
				43	* &struct drm_file used by the PRIME core code.
				44	*/
				45
				46	struct drm_prime_file_private {
				47	/* private: */
				48	struct mutex lock;
				49	struct rb_root dmabufs;
				50	struct rb_root handles;
				51	};
				52
				53	struct device;
				54
				55	struct dma_buf_export_info;
				56	struct dma_buf;
				57	struct dma_buf_attachment;
				58
				59	enum dma_data_direction;
				60
				61	struct drm_device;
				62	struct drm_gem_object;
				63	struct drm_file;
				64
				65	struct device;
				66
				67	struct dma_buf drm_gem_prime_export(struct drm_device dev,
				68	struct drm_gem_object *obj,
				69	int flags);
				70	int drm_gem_prime_handle_to_fd(struct drm_device *dev,
				71	struct drm_file *file_priv, uint32_t handle, uint32_t flags,
				72	int *prime_fd);
				73	int drm_gem_prime_mmap(struct drm_gem_object obj, struct vm_area_struct vma);
				74	struct drm_gem_object drm_gem_prime_import(struct drm_device dev,
				75	struct dma_buf *dma_buf);
				76
				77	struct drm_gem_object drm_gem_prime_import_dev(struct drm_device dev,
				78	struct dma_buf *dma_buf,
				79	struct device *attach_dev);
				80
				81	int drm_gem_prime_fd_to_handle(struct drm_device *dev,
				82	struct drm_file file_priv, int prime_fd, uint32_t handle);
				83	struct dma_buf drm_gem_dmabuf_export(struct drm_device dev,
				84	struct dma_buf_export_info *exp_info);
				85	void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
				86	int drm_gem_map_attach(struct dma_buf *dma_buf,
				87	struct dma_buf_attachment *attach);
				88	void drm_gem_map_detach(struct dma_buf *dma_buf,
				89	struct dma_buf_attachment *attach);
				90	struct sg_table drm_gem_map_dma_buf(struct dma_buf_attachment attach,
				91	enum dma_data_direction dir);
				92	void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
				93	struct sg_table *sgt,
				94	enum dma_data_direction dir);
				95	void drm_gem_dmabuf_vmap(struct dma_buf dma_buf);
				96	void drm_gem_dmabuf_vunmap(struct dma_buf dma_buf, void vaddr);
				97	void drm_gem_dmabuf_kmap(struct dma_buf dma_buf, unsigned long page_num);
				98	void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
				99	void *addr);
				100	int drm_gem_dmabuf_mmap(struct dma_buf dma_buf, struct vm_area_struct vma);
				101
				102	int drm_prime_sg_to_page_addr_arrays(struct sg_table sgt, struct page *pages,
				103	dma_addr_t *addrs, int max_pages);
				104	struct sg_table drm_prime_pages_to_sg(struct page *pages, unsigned int nr_pages);
				105	void drm_prime_gem_destroy(struct drm_gem_object obj, struct sg_table sg);
				106
				107
				108	#endif /* __DRM_PRIME_H__ */