[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / char / agp / agp.h

/*
 * AGPGART
 * Copyright (C) 2004 Silicon Graphics, Inc.
 * Copyright (C) 2002-2004 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_PRIV_H
#define _AGP_BACKEND_PRIV_H 1

#include <asm/agp.h>	/* for flush_agp_cache() */

#define PFX "agpgart: "

//#define AGP_DEBUG 1
#ifdef AGP_DEBUG
#define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __func__ , ## y)
#else
#define DBG(x,y...) do { } while (0)
#endif

extern struct agp_bridge_data *agp_bridge;

enum aper_size_type {
	U8_APER_SIZE,
	U16_APER_SIZE,
	U32_APER_SIZE,
	LVL2_APER_SIZE,
	FIXED_APER_SIZE
};

struct gatt_mask {
	unsigned long mask;
	u32 type;
	/* totally device specific, for integrated chipsets that
	 * might have different types of memory masks.  For other
	 * devices this will probably be ignored */
};

#define AGP_PAGE_DESTROY_UNMAP 1
#define AGP_PAGE_DESTROY_FREE 2

struct aper_size_info_8 {
	int size;
	int num_entries;
	int page_order;
	u8 size_value;
};

struct aper_size_info_16 {
	int size;
	int num_entries;
	int page_order;
	u16 size_value;
};

struct aper_size_info_32 {
	int size;
	int num_entries;
	int page_order;
	u32 size_value;
};

struct aper_size_info_lvl2 {
	int size;
	int num_entries;
	u32 size_value;
};

struct aper_size_info_fixed {
	int size;
	int num_entries;
	int page_order;
};

struct agp_bridge_driver {
	struct module *owner;
	const void *aperture_sizes;
	int num_aperture_sizes;
	enum aper_size_type size_type;
	bool cant_use_aperture;
	bool needs_scratch_page;
	const struct gatt_mask *masks;
	int (*fetch_size)(void);
	int (*configure)(void);
	void (*agp_enable)(struct agp_bridge_data *, u32);
	void (*cleanup)(void);
	void (*tlb_flush)(struct agp_memory *);
	unsigned long (*mask_memory)(struct agp_bridge_data *, dma_addr_t, int);
	void (*cache_flush)(void);
	int (*create_gatt_table)(struct agp_bridge_data *);
	int (*free_gatt_table)(struct agp_bridge_data *);
	int (*insert_memory)(struct agp_memory *, off_t, int);
	int (*remove_memory)(struct agp_memory *, off_t, int);
	struct agp_memory *(*alloc_by_type) (size_t, int);
	void (*free_by_type)(struct agp_memory *);
	struct page *(*agp_alloc_page)(struct agp_bridge_data *);
	int (*agp_alloc_pages)(struct agp_bridge_data *, struct agp_memory *, size_t);
	void (*agp_destroy_page)(struct page *, int flags);
	void (*agp_destroy_pages)(struct agp_memory *);
	int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
};

struct agp_bridge_data {
	const struct agp_version *version;
	const struct agp_bridge_driver *driver;
	const struct vm_operations_struct *vm_ops;
	void *previous_size;
	void *current_size;
	void *dev_private_data;
	struct pci_dev *dev;
	u32 __iomem *gatt_table;
	u32 *gatt_table_real;
	unsigned long scratch_page;
	struct page *scratch_page_page;
	dma_addr_t scratch_page_dma;
	unsigned long gart_bus_addr;
	unsigned long gatt_bus_addr;
	u32 mode;
	enum chipset_type type;
	unsigned long *key_list;
	atomic_t current_memory_agp;
	atomic_t agp_in_use;
	int max_memory_agp;	/* in number of pages */
	int aperture_size_idx;
	int capndx;
	int flags;
	char major_version;
	char minor_version;
	struct list_head list;
	u32 apbase_config;
	/* list of agp_memory mapped to the aperture */
	struct list_head mapped_list;
	spinlock_t mapped_lock;
};

#define KB(x)	((x) * 1024)
#define MB(x)	(KB (KB (x)))
#define GB(x)	(MB (KB (x)))

#define A_SIZE_8(x)	((struct aper_size_info_8 *) x)
#define A_SIZE_16(x)	((struct aper_size_info_16 *) x)
#define A_SIZE_32(x)	((struct aper_size_info_32 *) x)
#define A_SIZE_LVL2(x)	((struct aper_size_info_lvl2 *) x)
#define A_SIZE_FIX(x)	((struct aper_size_info_fixed *) x)
#define A_IDX8(bridge)	(A_SIZE_8((bridge)->driver->aperture_sizes) + i)
#define A_IDX16(bridge)	(A_SIZE_16((bridge)->driver->aperture_sizes) + i)
#define A_IDX32(bridge)	(A_SIZE_32((bridge)->driver->aperture_sizes) + i)
#define MAXKEY		(4096 * 32)

#define PGE_EMPTY(b, p)	(!(p) || (p) == (unsigned long) (b)->scratch_page)


struct agp_device_ids {
	unsigned short device_id; /* first, to make table easier to read */
	enum chipset_type chipset;
	const char *chipset_name;
	int (*chipset_setup) (struct pci_dev *pdev);	/* used to override generic */
};

/* Driver registration */
struct agp_bridge_data *agp_alloc_bridge(void);
void agp_put_bridge(struct agp_bridge_data *bridge);
int agp_add_bridge(struct agp_bridge_data *bridge);
void agp_remove_bridge(struct agp_bridge_data *bridge);

/* Frontend routines. */
int agp_frontend_initialize(void);
void agp_frontend_cleanup(void);

/* Generic routines. */
void agp_generic_enable(struct agp_bridge_data *bridge, u32 mode);
int agp_generic_create_gatt_table(struct agp_bridge_data *bridge);
int agp_generic_free_gatt_table(struct agp_bridge_data *bridge);
struct agp_memory *agp_create_memory(int scratch_pages);
int agp_generic_insert_memory(struct agp_memory *mem, off_t pg_start, int type);
int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
void agp_generic_free_by_type(struct agp_memory *curr);
struct page *agp_generic_alloc_page(struct agp_bridge_data *bridge);
int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
			    struct agp_memory *memory, size_t page_count);
void agp_generic_destroy_page(struct page *page, int flags);
void agp_generic_destroy_pages(struct agp_memory *memory);
void agp_free_key(int key);
int agp_num_entries(void);
u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 mode, u32 command);
void agp_device_command(u32 command, bool agp_v3);
int agp_3_5_enable(struct agp_bridge_data *bridge);
void global_cache_flush(void);
void get_agp_version(struct agp_bridge_data *bridge);
unsigned long agp_generic_mask_memory(struct agp_bridge_data *bridge,
				      dma_addr_t phys, int type);
int agp_generic_type_to_mask_type(struct agp_bridge_data *bridge,
				  int type);
struct agp_bridge_data *agp_generic_find_bridge(struct pci_dev *pdev);

/* generic functions for user-populated AGP memory types */
struct agp_memory *agp_generic_alloc_user(size_t page_count, int type);
void agp_alloc_page_array(size_t size, struct agp_memory *mem);
void agp_free_page_array(struct agp_memory *mem);


/* generic routines for agp>=3 */
int agp3_generic_fetch_size(void);
void agp3_generic_tlbflush(struct agp_memory *mem);
int agp3_generic_configure(void);
void agp3_generic_cleanup(void);

/* aperture sizes have been standardised since v3 */
#define AGP_GENERIC_SIZES_ENTRIES 11
extern const struct aper_size_info_16 agp3_generic_sizes[];

extern int agp_off;
extern int agp_try_unsupported_boot;

long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);

/* Chipset independent registers (from AGP Spec) */
#define AGP_APBASE	0x10

#define AGPSTAT		0x4
#define AGPCMD		0x8
#define AGPNISTAT	0xc
#define AGPCTRL		0x10
#define AGPAPSIZE	0x14
#define AGPNEPG		0x16
#define AGPGARTLO	0x18
#define AGPGARTHI	0x1c
#define AGPNICMD	0x20

#define AGP_MAJOR_VERSION_SHIFT	(20)
#define AGP_MINOR_VERSION_SHIFT	(16)

#define AGPSTAT_RQ_DEPTH	(0xff000000)
#define AGPSTAT_RQ_DEPTH_SHIFT	24

#define AGPSTAT_CAL_MASK	(1<<12|1<<11|1<<10)
#define AGPSTAT_ARQSZ		(1<<15|1<<14|1<<13)
#define AGPSTAT_ARQSZ_SHIFT	13

#define AGPSTAT_SBA		(1<<9)
#define AGPSTAT_AGP_ENABLE	(1<<8)
#define AGPSTAT_FW		(1<<4)
#define AGPSTAT_MODE_3_0	(1<<3)

#define AGPSTAT2_1X		(1<<0)
#define AGPSTAT2_2X		(1<<1)
#define AGPSTAT2_4X		(1<<2)

#define AGPSTAT3_RSVD		(1<<2)
#define AGPSTAT3_8X		(1<<1)
#define AGPSTAT3_4X		(1)

#define AGPCTRL_APERENB		(1<<8)
#define AGPCTRL_GTLBEN		(1<<7)

#define AGP2_RESERVED_MASK 0x00fffcc8
#define AGP3_RESERVED_MASK 0x00ff00c4

#define AGP_ERRATA_FASTWRITES 1<<0
#define AGP_ERRATA_SBA	 1<<1
#define AGP_ERRATA_1X 1<<2

#endif	/* _AGP_BACKEND_PRIV_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* AGPGART
	3	* Copyright (C) 2004 Silicon Graphics, Inc.
	4	* Copyright (C) 2002-2004 Dave Jones
	5	* Copyright (C) 1999 Jeff Hartmann
	6	* Copyright (C) 1999 Precision Insight, Inc.
	7	* Copyright (C) 1999 Xi Graphics, Inc.
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a
	10	* copy of this software and associated documentation files (the "Software"),
	11	* to deal in the Software without restriction, including without limitation
	12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	13	* and/or sell copies of the Software, and to permit persons to whom the
	14	* Software is furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice shall be included
	17	* in all copies or substantial portions of the Software.
	18	*
	19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	20	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	21	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
6a92a4e0 DJ	22	* JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
	23	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	24	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
1da177e4 LT	25	* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	26	*
	27	*/
	28
	29	#ifndef _AGP_BACKEND_PRIV_H
	30	#define _AGP_BACKEND_PRIV_H 1
	31
	32	#include <asm/agp.h> /* for flush_agp_cache() */
	33
	34	#define PFX "agpgart: "
	35
	36	//#define AGP_DEBUG 1
	37	#ifdef AGP_DEBUG
bf9d8929	38	#define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __func__ , ## y)
1da177e4 LT	39	#else
	40	#define DBG(x,y...) do { } while (0)
	41	#endif
	42
	43	extern struct agp_bridge_data *agp_bridge;
	44
	45	enum aper_size_type {
	46	U8_APER_SIZE,
	47	U16_APER_SIZE,
	48	U32_APER_SIZE,
	49	LVL2_APER_SIZE,
	50	FIXED_APER_SIZE
	51	};
	52
	53	struct gatt_mask {
	54	unsigned long mask;
	55	u32 type;
6a92a4e0	56	/* totally device specific, for integrated chipsets that
1da177e4 LT	57	* might have different types of memory masks. For other
	58	* devices this will probably be ignored */
	59	};
	60
a2721e99 DA	61	#define AGP_PAGE_DESTROY_UNMAP 1
	62	#define AGP_PAGE_DESTROY_FREE 2
	63
1da177e4 LT	64	struct aper_size_info_8 {
	65	int size;
	66	int num_entries;
	67	int page_order;
	68	u8 size_value;
	69	};
	70
	71	struct aper_size_info_16 {
	72	int size;
	73	int num_entries;
	74	int page_order;
	75	u16 size_value;
	76	};
	77
	78	struct aper_size_info_32 {
	79	int size;
	80	int num_entries;
	81	int page_order;
	82	u32 size_value;
	83	};
	84
	85	struct aper_size_info_lvl2 {
	86	int size;
	87	int num_entries;
	88	u32 size_value;
	89	};
	90
	91	struct aper_size_info_fixed {
	92	int size;
	93	int num_entries;
	94	int page_order;
	95	};
	96
	97	struct agp_bridge_driver {
	98	struct module *owner;
e5524f35	99	const void *aperture_sizes;
1da177e4 LT	100	int num_aperture_sizes;
1da177e4 LT	101	enum aper_size_type size_type;
c7258012 JP	102	bool cant_use_aperture;
c7258012 JP	103	bool needs_scratch_page;
e5524f35	104	const struct gatt_mask *masks;
1da177e4 LT	105	int (*fetch_size)(void);
	106	int (*configure)(void);
	107	void (agp_enable)(struct agp_bridge_data , u32);
	108	void (*cleanup)(void);
	109	void (tlb_flush)(struct agp_memory );
2a4ceb6d	110	unsigned long (mask_memory)(struct agp_bridge_data , dma_addr_t, int);
1da177e4 LT	111	void (*cache_flush)(void);
	112	int (create_gatt_table)(struct agp_bridge_data );
	113	int (free_gatt_table)(struct agp_bridge_data );
	114	int (insert_memory)(struct agp_memory , off_t, int);
	115	int (remove_memory)(struct agp_memory , off_t, int);
	116	struct agp_memory (alloc_by_type) (size_t, int);
	117	void (free_by_type)(struct agp_memory );
07613ba2	118	struct page (agp_alloc_page)(struct agp_bridge_data *);
37acee10	119	int (agp_alloc_pages)(struct agp_bridge_data , struct agp_memory *, size_t);
07613ba2	120	void (agp_destroy_page)(struct page , int flags);
bd07928c	121	void (agp_destroy_pages)(struct agp_memory );
a13af4b4	122	int (agp_type_to_mask_type) (struct agp_bridge_data , int);
1da177e4 LT	123	};
	124
	125	struct agp_bridge_data {
8eb7925f	126	const struct agp_version *version;
e5524f35	127	const struct agp_bridge_driver *driver;
f0f37e2f	128	const struct vm_operations_struct *vm_ops;
1da177e4 LT	129	void *previous_size;
	130	void *current_size;
	131	void *dev_private_data;
	132	struct pci_dev *dev;
	133	u32 __iomem *gatt_table;
	134	u32 *gatt_table_real;
	135	unsigned long scratch_page;
c2980d8c	136	struct page *scratch_page_page;
ff663cf8	137	dma_addr_t scratch_page_dma;
1da177e4 LT	138	unsigned long gart_bus_addr;
	139	unsigned long gatt_bus_addr;
	140	u32 mode;
	141	enum chipset_type type;
	142	unsigned long *key_list;
	143	atomic_t current_memory_agp;
	144	atomic_t agp_in_use;
	145	int max_memory_agp; /* in number of pages */
	146	int aperture_size_idx;
	147	int capndx;
	148	int flags;
	149	char major_version;
	150	char minor_version;
	151	struct list_head list;
b0825488	152	u32 apbase_config;
a8c84df9 KP	153	/* list of agp_memory mapped to the aperture */
	154	struct list_head mapped_list;
	155	spinlock_t mapped_lock;
1da177e4 LT	156	};
	157
	158	#define KB(x) ((x) * 1024)
	159	#define MB(x) (KB (KB (x)))
	160	#define GB(x) (MB (KB (x)))
	161
	162	#define A_SIZE_8(x) ((struct aper_size_info_8 *) x)
	163	#define A_SIZE_16(x) ((struct aper_size_info_16 *) x)
	164	#define A_SIZE_32(x) ((struct aper_size_info_32 *) x)
	165	#define A_SIZE_LVL2(x) ((struct aper_size_info_lvl2 *) x)
	166	#define A_SIZE_FIX(x) ((struct aper_size_info_fixed *) x)
	167	#define A_IDX8(bridge) (A_SIZE_8((bridge)->driver->aperture_sizes) + i)
	168	#define A_IDX16(bridge) (A_SIZE_16((bridge)->driver->aperture_sizes) + i)
	169	#define A_IDX32(bridge) (A_SIZE_32((bridge)->driver->aperture_sizes) + i)
	170	#define MAXKEY (4096 * 32)
	171
	172	#define PGE_EMPTY(b, p) (!(p) \|\| (p) == (unsigned long) (b)->scratch_page)
	173
	174
1da177e4 LT	175	struct agp_device_ids {
	176	unsigned short device_id; /* first, to make table easier to read */
	177	enum chipset_type chipset;
	178	const char *chipset_name;
	179	int (chipset_setup) (struct pci_dev pdev); /* used to override generic */
	180	};
	181
	182	/* Driver registration */
	183	struct agp_bridge_data *agp_alloc_bridge(void);
	184	void agp_put_bridge(struct agp_bridge_data *bridge);
	185	int agp_add_bridge(struct agp_bridge_data *bridge);
	186	void agp_remove_bridge(struct agp_bridge_data *bridge);
	187
	188	/* Frontend routines. */
	189	int agp_frontend_initialize(void);
	190	void agp_frontend_cleanup(void);
	191
	192	/* Generic routines. */
	193	void agp_generic_enable(struct agp_bridge_data *bridge, u32 mode);
	194	int agp_generic_create_gatt_table(struct agp_bridge_data *bridge);
	195	int agp_generic_free_gatt_table(struct agp_bridge_data *bridge);
	196	struct agp_memory *agp_create_memory(int scratch_pages);
	197	int agp_generic_insert_memory(struct agp_memory *mem, off_t pg_start, int type);
	198	int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
	199	struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
	200	void agp_generic_free_by_type(struct agp_memory *curr);
07613ba2	201	struct page agp_generic_alloc_page(struct agp_bridge_data bridge);
37acee10 SL	202	int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
37acee10 SL	203	struct agp_memory *memory, size_t page_count);
07613ba2	204	void agp_generic_destroy_page(struct page *page, int flags);
bd07928c	205	void agp_generic_destroy_pages(struct agp_memory *memory);
1da177e4 LT	206	void agp_free_key(int key);
	207	int agp_num_entries(void);
	208	u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 mode, u32 command);
c7258012	209	void agp_device_command(u32 command, bool agp_v3);
1da177e4 LT	210	int agp_3_5_enable(struct agp_bridge_data *bridge);
	211	void global_cache_flush(void);
	212	void get_agp_version(struct agp_bridge_data *bridge);
	213	unsigned long agp_generic_mask_memory(struct agp_bridge_data *bridge,
2a4ceb6d	214	dma_addr_t phys, int type);
a030ce44 TH	215	int agp_generic_type_to_mask_type(struct agp_bridge_data *bridge,
a030ce44 TH	216	int type);
1da177e4 LT	217	struct agp_bridge_data agp_generic_find_bridge(struct pci_dev pdev);
1da177e4 LT	218
a030ce44 TH	219	/* generic functions for user-populated AGP memory types */
	220	struct agp_memory *agp_generic_alloc_user(size_t page_count, int type);
	221	void agp_alloc_page_array(size_t size, struct agp_memory *mem);
	222	void agp_free_page_array(struct agp_memory *mem);
	223
	224
1da177e4 LT	225	/* generic routines for agp>=3 */
	226	int agp3_generic_fetch_size(void);
	227	void agp3_generic_tlbflush(struct agp_memory *mem);
	228	int agp3_generic_configure(void);
	229	void agp3_generic_cleanup(void);
	230
	231	/* aperture sizes have been standardised since v3 */
	232	#define AGP_GENERIC_SIZES_ENTRIES 11
e5524f35	233	extern const struct aper_size_info_16 agp3_generic_sizes[];
1da177e4	234
1da177e4 LT	235	extern int agp_off;
	236	extern int agp_try_unsupported_boot;
	237
0316fe83 ZM	238	long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
0316fe83 ZM	239
25985edc	240	/* Chipset independent registers (from AGP Spec) */
1da177e4 LT	241	#define AGP_APBASE 0x10
	242
	243	#define AGPSTAT 0x4
	244	#define AGPCMD 0x8
	245	#define AGPNISTAT 0xc
	246	#define AGPCTRL 0x10
	247	#define AGPAPSIZE 0x14
	248	#define AGPNEPG 0x16
	249	#define AGPGARTLO 0x18
	250	#define AGPGARTHI 0x1c
	251	#define AGPNICMD 0x20
	252
	253	#define AGP_MAJOR_VERSION_SHIFT (20)
	254	#define AGP_MINOR_VERSION_SHIFT (16)
	255
	256	#define AGPSTAT_RQ_DEPTH (0xff000000)
	257	#define AGPSTAT_RQ_DEPTH_SHIFT 24
	258
	259	#define AGPSTAT_CAL_MASK (1<<12\|1<<11\|1<<10)
	260	#define AGPSTAT_ARQSZ (1<<15\|1<<14\|1<<13)
	261	#define AGPSTAT_ARQSZ_SHIFT 13
	262
	263	#define AGPSTAT_SBA (1<<9)
	264	#define AGPSTAT_AGP_ENABLE (1<<8)
	265	#define AGPSTAT_FW (1<<4)
	266	#define AGPSTAT_MODE_3_0 (1<<3)
	267
	268	#define AGPSTAT2_1X (1<<0)
	269	#define AGPSTAT2_2X (1<<1)
	270	#define AGPSTAT2_4X (1<<2)
	271
	272	#define AGPSTAT3_RSVD (1<<2)
	273	#define AGPSTAT3_8X (1<<1)
	274	#define AGPSTAT3_4X (1)
	275
	276	#define AGPCTRL_APERENB (1<<8)
	277	#define AGPCTRL_GTLBEN (1<<7)
	278
	279	#define AGP2_RESERVED_MASK 0x00fffcc8
	280	#define AGP3_RESERVED_MASK 0x00ff00c4
	281
	282	#define AGP_ERRATA_FASTWRITES 1<<0
	283	#define AGP_ERRATA_SBA 1<<1
	284	#define AGP_ERRATA_1X 1<<2
	285
	286	#endif /* _AGP_BACKEND_PRIV_H */