WebSVN – Kolibri OS – Blame – /drivers/include/drm/drm_legacy.h

Rev	Author	Line No.	Line
5270	serge	1	#ifndef __DRM_DRM_LEGACY_H__
		2	#define __DRM_DRM_LEGACY_H__
		3
		4	/*
		5	* Legacy driver interfaces for the Direct Rendering Manager
		6	*
		7	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
		8	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
		9	* Copyright (c) 2009-2010, Code Aurora Forum.
		10	* All rights reserved.
		11	* Copyright © 2014 Intel Corporation
		12	* Daniel Vetter
		13	*
		14	* Author: Rickard E. (Rik) Faith
		15	* Author: Gareth Hughes
		16	*
		17	* Permission is hereby granted, free of charge, to any person obtaining a
		18	* copy of this software and associated documentation files (the "Software"),
		19	* to deal in the Software without restriction, including without limitation
		20	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
		21	* and/or sell copies of the Software, and to permit persons to whom the
		22	* Software is furnished to do so, subject to the following conditions:
		23	*
		24	* The above copyright notice and this permission notice (including the next
		25	* paragraph) shall be included in all copies or substantial portions of the
		26	* Software.
		27	*
		28	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
		29	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		30	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
		31	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
		32	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
		33	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
		34	* OTHER DEALINGS IN THE SOFTWARE.
		35	*/
		36
		37
		38	/*
		39	* Legacy Support for palateontologic DRM drivers
		40	*
		41	* If you add a new driver and it uses any of these functions or structures,
		42	* you're doing it terribly wrong.
		43	*/
		44
		45	/**
		46	* DMA buffer.
		47	*/
		48	struct drm_buf {
		49	int idx; /*< Index into master buflist /
		50	int total; /*< Buffer size /
		51	int order; /*< log-base-2(total) /
		52	int used; /*< Amount of buffer in use (for DMA) /
		53	unsigned long offset; /*< Byte offset (used internally) /
		54	void address; /< Address of buffer /
		55	unsigned long bus_address; /*< Bus address of buffer /
		56	struct drm_buf next; /< Kernel-only: used for free list /
		57	__volatile__ int waiting; /*< On kernel DMA queue /
		58	__volatile__ int pending; /*< On hardware DMA queue /
		59	struct drm_file file_priv; /< Private of holding file descr /
		60	int context; /*< Kernel queue for this buffer /
		61	int while_locked; /*< Dispatch this buffer while locked /
		62	enum {
		63	DRM_LIST_NONE = 0,
		64	DRM_LIST_FREE = 1,
		65	DRM_LIST_WAIT = 2,
		66	DRM_LIST_PEND = 3,
		67	DRM_LIST_PRIO = 4,
		68	DRM_LIST_RECLAIM = 5
		69	} list; /*< Which list we're on /
		70
		71	int dev_priv_size; /*< Size of buffer private storage /
		72	void dev_private; /< Per-buffer private storage /
		73	};
		74
		75	typedef struct drm_dma_handle {
		76	dma_addr_t busaddr;
		77	void *vaddr;
		78	size_t size;
		79	} drm_dma_handle_t;
		80
		81	/**
		82	* Buffer entry. There is one of this for each buffer size order.
		83	*/
		84	struct drm_buf_entry {
		85	int buf_size; /*< size /
		86	int buf_count; /*< number of buffers /
		87	struct drm_buf buflist; /< buffer list /
		88	int seg_count;
		89	int page_order;
		90	struct drm_dma_handle **seglist;
		91
		92	int low_mark; /*< Low water mark /
		93	int high_mark; /*< High water mark /
		94	};
		95
		96	/**
		97	* DMA data.
		98	*/
		99	struct drm_device_dma {
		100
		101	struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /*< buffers, grouped by their size order /
		102	int buf_count; /*< total number of buffers /
		103	struct drm_buf buflist; /< Vector of pointers into drm_device_dma::bufs */
		104	int seg_count;
		105	int page_count; /*< number of pages /
		106	unsigned long pagelist; /< page list /
		107	unsigned long byte_count;
		108	enum {
		109	_DRM_DMA_USE_AGP = 0x01,
		110	_DRM_DMA_USE_SG = 0x02,
		111	_DRM_DMA_USE_FB = 0x04,
		112	_DRM_DMA_USE_PCI_RO = 0x08
		113	} flags;
		114
		115	};
		116
		117	/**
		118	* Scatter-gather memory.
		119	*/
		120	struct drm_sg_mem {
		121	unsigned long handle;
		122	void *virtual;
		123	int pages;
		124	struct page **pagelist;
		125	dma_addr_t *busaddr;
		126	};
		127
		128	/**
		129	* Kernel side of a mapping
		130	*/
		131	struct drm_local_map {
		132	resource_size_t offset; /*< Requested physical address (0 for SAREA)/
		133	unsigned long size; /*< Requested physical size (bytes) /
		134	enum drm_map_type type; /*< Type of memory to map /
		135	enum drm_map_flags flags; /*< Flags /
		136	void handle; /< User-space: "Handle" to pass to mmap() /
		137	/*< Kernel-space: kernel-virtual address /
		138	int mtrr; /*< MTRR slot used /
		139	};
		140
		141	typedef struct drm_local_map drm_local_map_t;
		142
		143	/**
		144	* Mappings list
		145	*/
		146	struct drm_map_list {
		147	struct list_head head; /*< list head /
		148	struct drm_hash_item hash;
		149	struct drm_local_map map; /< mapping /
		150	uint64_t user_token;
		151	struct drm_master *master;
		152	};
		153
		154	int drm_legacy_addmap(struct drm_device *d, resource_size_t offset,
		155	unsigned int size, enum drm_map_type type,
		156	enum drm_map_flags flags, struct drm_local_map **map_p);
		157	int drm_legacy_rmmap(struct drm_device d, struct drm_local_map map);
		158	int drm_legacy_rmmap_locked(struct drm_device d, struct drm_local_map map);
		159	struct drm_local_map drm_legacy_getsarea(struct drm_device dev);
		160	int drm_legacy_mmap(struct file filp, struct vm_area_struct vma);
		161
		162	int drm_legacy_addbufs_agp(struct drm_device d, struct drm_buf_desc req);
		163	int drm_legacy_addbufs_pci(struct drm_device d, struct drm_buf_desc req);
		164
		165	/**
		166	* Test that the hardware lock is held by the caller, returning otherwise.
		167	*
		168	* \param dev DRM device.
		169	* \param filp file pointer of the caller.
		170	*/
		171	#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
		172	do { \
		173	if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) \|\| \
		174	_file_priv->master->lock.file_priv != _file_priv) { \
		175	DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
		176	__func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
		177	_file_priv->master->lock.file_priv, _file_priv); \
		178	return -EINVAL; \
		179	} \
		180	} while (0)
		181
		182	void drm_legacy_idlelock_take(struct drm_lock_data *lock);
		183	void drm_legacy_idlelock_release(struct drm_lock_data *lock);
		184
		185	/* drm_pci.c dma alloc wrappers */
		186	void __drm_legacy_pci_free(struct drm_device dev, drm_dma_handle_t dmah);
		187
		188	/* drm_memory.c */
		189	void drm_legacy_ioremap(struct drm_local_map map, struct drm_device dev);
		190	void drm_legacy_ioremap_wc(struct drm_local_map map, struct drm_device dev);
		191	void drm_legacy_ioremapfree(struct drm_local_map map, struct drm_device dev);
		192
		193	static __inline__ struct drm_local_map drm_legacy_findmap(struct drm_device dev,
		194	unsigned int token)
		195	{
		196	struct drm_map_list *_entry;
		197	list_for_each_entry(_entry, &dev->maplist, head)
		198	if (_entry->user_token == token)
		199	return _entry->map;
		200	return NULL;
		201	}
		202
		203	#endif /* __DRM_DRM_LEGACY_H__ */

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(root)/drivers/include/drm/drm_legacy.h – Rev 5352