summaryrefslogtreecommitdiffstats
path: root/drivers/char/agp/agp.h
blob: 395168fb17e32f7b80269b1e8f4074dadce768b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
/*
 * 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() */
#ifndef map_page_into_agp_noflush
#define map_page_into_agp_noflush(page) map_page_into_agp(page)
#define map_page_into_agp_global_flush()
#endif

#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 *, unsigned long, 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 *);
	void *(*agp_alloc_page)(struct agp_bridge_data *);
	void (*agp_destroy_page)(void *, int flags);
	int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
	void (*chipset_flush)(struct agp_bridge_data *);
};

struct agp_bridge_data {
	const struct agp_version *version;
	const struct agp_bridge_driver *driver;
	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;
	unsigned long scratch_page_real;
	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;
};

#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)


/* Intel registers */
#define INTEL_APSIZE	0xb4
#define INTEL_ATTBASE	0xb8
#define INTEL_AGPCTRL	0xb0
#define INTEL_NBXCFG	0x50
#define INTEL_ERRSTS	0x91

/* Intel i830 registers */
#define I830_GMCH_CTRL			0x52
#define I830_GMCH_ENABLED		0x4
#define I830_GMCH_MEM_MASK		0x1
#define I830_GMCH_MEM_64M		0x1
#define I830_GMCH_MEM_128M		0
#define I830_GMCH_GMS_MASK		0x70
#define I830_GMCH_GMS_DISABLED		0x00
#define I830_GMCH_GMS_LOCAL		0x10
#define I830_GMCH_GMS_STOLEN_512	0x20
#define I830_GMCH_GMS_STOLEN_1024	0x30
#define I830_GMCH_GMS_STOLEN_8192	0x40
#define I830_RDRAM_CHANNEL_TYPE		0x03010
#define I830_RDRAM_ND(x)		(((x) & 0x20) >> 5)
#define I830_RDRAM_DDT(x)		(((x) & 0x18) >> 3)

/* This one is for I830MP w. an external graphic card */
#define INTEL_I830_ERRSTS	0x92

/* Intel 855GM/852GM registers */
#define I855_GMCH_GMS_MASK		0xF0
#define I855_GMCH_GMS_STOLEN_0M		0x0
#define I855_GMCH_GMS_STOLEN_1M		(0x1 << 4)
#define I855_GMCH_GMS_STOLEN_4M		(0x2 << 4)
#define I855_GMCH_GMS_STOLEN_8M		(0x3 << 4)
#define I855_GMCH_GMS_STOLEN_16M	(0x4 << 4)
#define I855_GMCH_GMS_STOLEN_32M	(0x5 << 4)
#define I85X_CAPID			0x44
#define I85X_VARIANT_MASK		0x7
#define I85X_VARIANT_SHIFT		5
#define I855_GME			0x0
#define I855_GM				0x4
#define I852_GME			0x2
#define I852_GM				0x5

/* Intel i845 registers */
#define INTEL_I845_AGPM		0x51
#define INTEL_I845_ERRSTS	0xc8

/* Intel i860 registers */
#define INTEL_I860_MCHCFG	0x50
#define INTEL_I860_ERRSTS	0xc8

/* Intel i810 registers */
#define I810_GMADDR		0x10
#define I810_MMADDR		0x14
#define I810_PTE_BASE		0x10000
#define I810_PTE_MAIN_UNCACHED	0x00000000
#define I810_PTE_LOCAL		0x00000002
#define I810_PTE_VALID		0x00000001
#define I830_PTE_SYSTEM_CACHED  0x00000006
#define I810_SMRAM_MISCC	0x70
#define I810_GFX_MEM_WIN_SIZE	0x00010000
#define I810_GFX_MEM_WIN_32M	0x00010000
#define I810_GMS		0x000000c0
#define I810_GMS_DISABLE	0x00000000
#define I810_PGETBL_CTL		0x2020
#define I810_PGETBL_ENABLED	0x00000001
#define I965_PGETBL_SIZE_MASK	0x0000000e
#define I965_PGETBL_SIZE_512KB	(0 << 1)
#define I965_PGETBL_SIZE_256KB	(1 << 1)
#define I965_PGETBL_SIZE_128KB	(2 << 1)
#define I965_PGETBL_SIZE_1MB	(3 << 1)
#define I965_PGETBL_SIZE_2MB	(4 << 1)
#define I965_PGETBL_SIZE_1_5MB	(5 << 1)
#define G33_PGETBL_SIZE_MASK    (3 << 8)
#define G33_PGETBL_SIZE_1M      (1 << 8)
#define G33_PGETBL_SIZE_2M      (2 << 8)

#define I810_DRAM_CTL		0x3000
#define I810_DRAM_ROW_0		0x00000001
#define I810_DRAM_ROW_0_SDRAM	0x00000001

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);
void *agp_generic_alloc_page(struct agp_bridge_data *bridge);
void agp_generic_destroy_page(void *addr, int flags);
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,
	unsigned long addr, 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[];

#define virt_to_gart(x) (phys_to_gart(virt_to_phys(x)))
#define gart_to_virt(x) (phys_to_virt(gart_to_phys(x)))

extern int agp_off;
extern int agp_try_unsupported_boot;

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

/* Chipset independant 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 */