[mirror_ubuntu-bionic-kernel.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

#ifndef TRUE
#define TRUE 1
#endif

#ifndef FALSE
#define FALSE 0
#endif

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;
	int cant_use_aperture;
	unsigned long page_mask;
	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;
	unsigned long *memory;
	size_t page_count;
	int key;
	int num_scratch_pages;
	off_t pg_start;
	u32 type;
	u32 physical;
	u8 is_bound;
	u8 is_flushed;
        u8 vmalloc_flag;
};

#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 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
1da177e4 LT	33	#ifndef TRUE
	34	#define TRUE 1
	35	#endif
	36
	37	#ifndef FALSE
	38	#define FALSE 0
	39	#endif
	40
	41	enum chipset_type {
	42	NOT_SUPPORTED,
	43	SUPPORTED,
	44	};
	45
	46	struct agp_version {
	47	u16 major;
	48	u16 minor;
	49	};
	50
	51	struct agp_kern_info {
	52	struct agp_version version;
	53	struct pci_dev *device;
	54	enum chipset_type chipset;
	55	unsigned long mode;
	56	unsigned long aper_base;
	57	size_t aper_size;
	58	int max_memory; /* In pages */
	59	int current_memory;
	60	int cant_use_aperture;
	61	unsigned long page_mask;
	62	struct vm_operations_struct *vm_ops;
	63	};
	64
	65	/*
	66	* The agp_memory structure has information about the block of agp memory
	67	* allocated. A caller may manipulate the next and prev pointers to link
	68	* each allocated item into a list. These pointers are ignored by the backend.
	69	* Everything else should never be written to, but the caller may read any of
	70	* the items to determine the status of this block of agp memory.
	71	*/
	72
	73	struct agp_bridge_data;
	74
	75	struct agp_memory {
	76	struct agp_memory *next;
	77	struct agp_memory *prev;
	78	struct agp_bridge_data *bridge;
	79	unsigned long *memory;
	80	size_t page_count;
	81	int key;
	82	int num_scratch_pages;
	83	off_t pg_start;
	84	u32 type;
	85	u32 physical;
	86	u8 is_bound;
	87	u8 is_flushed;
a030ce44	88	u8 vmalloc_flag;
1da177e4 LT	89	};
	90
	91	#define AGP_NORMAL_MEMORY 0
	92
a030ce44 TH	93	#define AGP_USER_TYPES (1 << 16)
	94	#define AGP_USER_MEMORY (AGP_USER_TYPES)
	95	#define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1)
	96
1da177e4 LT	97	extern struct agp_bridge_data *agp_bridge;
	98	extern struct list_head agp_bridges;
	99
	100	extern struct agp_bridge_data (agp_find_bridge)(struct pci_dev *);
	101
	102	extern void agp_free_memory(struct agp_memory *);
	103	extern struct agp_memory agp_allocate_memory(struct agp_bridge_data , size_t, u32);
	104	extern int agp_copy_info(struct agp_bridge_data , struct agp_kern_info );
	105	extern int agp_bind_memory(struct agp_memory *, off_t);
	106	extern int agp_unbind_memory(struct agp_memory *);
	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 */