[linux-2.6-block.git] / include / linux / agp_backend.h

/*
 * AGPGART backend specific includes. Not for userspace consumption.
 *
 * Copyright (C) 2004 Silicon Graphics, Inc.
 * Copyright (C) 2002-2003 Dave Jones
 * Copyright (C) 1999 Jeff Hartmann
 * Copyright (C) 1999 Precision Insight, Inc.
 * Copyright (C) 1999 Xi Graphics, Inc.
 *
 * 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 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
 * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS 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.
 *
 */

#ifndef _AGP_BACKEND_H
#define _AGP_BACKEND_H 1

#include <linux/list.h>

enum chipset_type {
	NOT_SUPPORTED,
	SUPPORTED,
};

struct agp_version {
	u16 major;
	u16 minor;
};

struct agp_kern_info {
	struct agp_version version;
	struct pci_dev *device;
	enum chipset_type chipset;
	unsigned long mode;
	unsigned long aper_base;
	size_t aper_size;
	int max_memory;		/* In pages */
	int current_memory;
	bool cant_use_aperture;
	unsigned long page_mask;
	const struct vm_operations_struct *vm_ops;
};

/*
 * The agp_memory structure has information about the block of agp memory
 * allocated.  A caller may manipulate the next and prev pointers to link
 * each allocated item into a list.  These pointers are ignored by the backend.
 * Everything else should never be written to, but the caller may read any of
 * the items to determine the status of this block of agp memory.
 */

struct agp_bridge_data;

struct agp_memory {
	struct agp_memory *next;
	struct agp_memory *prev;
	struct agp_bridge_data *bridge;
	struct page **pages;
	size_t page_count;
	int key;
	int num_scratch_pages;
	off_t pg_start;
	u32 type;
	u32 physical;
	bool is_bound;
	bool is_flushed;
	bool vmalloc_flag;
	/* list of agp_memory mapped to the aperture */
	struct list_head mapped_list;
	/* DMA-mapped addresses */
	struct scatterlist *sg_list;
	int num_sg;
};

#define AGP_NORMAL_MEMORY 0

#define AGP_USER_TYPES (1 << 16)
#define AGP_USER_MEMORY (AGP_USER_TYPES)
#define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1)

extern struct agp_bridge_data *agp_bridge;
extern struct list_head agp_bridges;

extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *);

extern void agp_free_memory(struct agp_memory *);
extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32);
extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *);
extern int agp_bind_memory(struct agp_memory *, off_t);
extern int agp_unbind_memory(struct agp_memory *);
extern int agp_rebind_memory(void);
extern void agp_enable(struct agp_bridge_data *, u32);
extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
extern void agp_backend_release(struct agp_bridge_data *);
extern void agp_flush_chipset(struct agp_bridge_data *);

#endif				/* _AGP_BACKEND_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* AGPGART backend specific includes. Not for userspace consumption.
	3	*
	4	* Copyright (C) 2004 Silicon Graphics, Inc.
	5	* Copyright (C) 2002-2003 Dave Jones
	6	* Copyright (C) 1999 Jeff Hartmann
	7	* Copyright (C) 1999 Precision Insight, Inc.
	8	* Copyright (C) 1999 Xi Graphics, Inc.
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a
	11	* copy of this software and associated documentation files (the "Software"),
	12	* to deal in the Software without restriction, including without limitation
	13	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	14	* and/or sell copies of the Software, and to permit persons to whom the
	15	* Software is furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included
	18	* in all copies or substantial portions of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	21	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	23	* JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
	24	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	25	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
	26	* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	27	*
	28	*/
	29
	30	#ifndef _AGP_BACKEND_H
	31	#define _AGP_BACKEND_H 1
	32
a8c84df9 KP	33	#include <linux/list.h>
a8c84df9 KP	34
1da177e4 LT	35	enum chipset_type {
	36	NOT_SUPPORTED,
	37	SUPPORTED,
	38	};
	39
	40	struct agp_version {
	41	u16 major;
	42	u16 minor;
	43	};
	44
	45	struct agp_kern_info {
	46	struct agp_version version;
	47	struct pci_dev *device;
	48	enum chipset_type chipset;
	49	unsigned long mode;
	50	unsigned long aper_base;
	51	size_t aper_size;
	52	int max_memory; /* In pages */
	53	int current_memory;
c7258012	54	bool cant_use_aperture;
1da177e4	55	unsigned long page_mask;
f0f37e2f	56	const struct vm_operations_struct *vm_ops;
1da177e4 LT	57	};
	58
	59	/*
	60	* The agp_memory structure has information about the block of agp memory
	61	* allocated. A caller may manipulate the next and prev pointers to link
	62	* each allocated item into a list. These pointers are ignored by the backend.
	63	* Everything else should never be written to, but the caller may read any of
	64	* the items to determine the status of this block of agp memory.
	65	*/
	66
	67	struct agp_bridge_data;
	68
	69	struct agp_memory {
	70	struct agp_memory *next;
	71	struct agp_memory *prev;
	72	struct agp_bridge_data *bridge;
07613ba2	73	struct page **pages;
1da177e4 LT	74	size_t page_count;
	75	int key;
	76	int num_scratch_pages;
	77	off_t pg_start;
	78	u32 type;
	79	u32 physical;
c7258012 JP	80	bool is_bound;
c7258012 JP	81	bool is_flushed;
ff663cf8	82	bool vmalloc_flag;
a8c84df9 KP	83	/* list of agp_memory mapped to the aperture */
a8c84df9 KP	84	struct list_head mapped_list;
ff663cf8 ZW	85	/* DMA-mapped addresses */
	86	struct scatterlist *sg_list;
	87	int num_sg;
1da177e4 LT	88	};
	89
	90	#define AGP_NORMAL_MEMORY 0
	91
a030ce44 TH	92	#define AGP_USER_TYPES (1 << 16)
	93	#define AGP_USER_MEMORY (AGP_USER_TYPES)
	94	#define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1)
	95
1da177e4 LT	96	extern struct agp_bridge_data *agp_bridge;
	97	extern struct list_head agp_bridges;
	98
	99	extern struct agp_bridge_data (agp_find_bridge)(struct pci_dev *);
	100
	101	extern void agp_free_memory(struct agp_memory *);
	102	extern struct agp_memory agp_allocate_memory(struct agp_bridge_data , size_t, u32);
	103	extern int agp_copy_info(struct agp_bridge_data , struct agp_kern_info );
	104	extern int agp_bind_memory(struct agp_memory *, off_t);
	105	extern int agp_unbind_memory(struct agp_memory *);
a8c84df9	106	extern int agp_rebind_memory(void);
1da177e4 LT	107	extern void agp_enable(struct agp_bridge_data *, u32);
	108	extern struct agp_bridge_data agp_backend_acquire(struct pci_dev );
	109	extern void agp_backend_release(struct agp_bridge_data *);
a13af4b4	110	extern void agp_flush_chipset(struct agp_bridge_data *);
1da177e4	111
1da177e4	112	#endif /* _AGP_BACKEND_H */