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.
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:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
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
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
25 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #ifndef _AGP_BACKEND_PRIV_H
30 #define _AGP_BACKEND_PRIV_H 1
32 #include <asm/agp.h> /* for flush_agp_cache() */
34 #define PFX "agpgart: "
38 #define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __func__ , ## y)
40 #define DBG(x,y...) do { } while (0)
43 extern struct agp_bridge_data *agp_bridge;
56 /* totally device specific, for integrated chipsets that
57 * might have different types of memory masks. For other
58 * devices this will probably be ignored */
61 #define AGP_PAGE_DESTROY_UNMAP 1
62 #define AGP_PAGE_DESTROY_FREE 2
64 struct aper_size_info_8 {
71 struct aper_size_info_16 {
78 struct aper_size_info_32 {
85 struct aper_size_info_lvl2 {
91 struct aper_size_info_fixed {
97 struct agp_bridge_driver {
99 const void *aperture_sizes;
100 int num_aperture_sizes;
101 enum aper_size_type size_type;
102 bool cant_use_aperture;
103 bool needs_scratch_page;
104 const struct gatt_mask *masks;
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 *);
110 unsigned long (*mask_memory)(struct agp_bridge_data *, unsigned long, int);
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 *);
118 void *(*agp_alloc_page)(struct agp_bridge_data *);
119 int (*agp_alloc_pages)(struct agp_bridge_data *, struct agp_memory *, size_t);
120 void (*agp_destroy_page)(void *, int flags);
121 int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
122 void (*chipset_flush)(struct agp_bridge_data *);
125 struct agp_bridge_data {
126 const struct agp_version *version;
127 const struct agp_bridge_driver *driver;
128 struct vm_operations_struct *vm_ops;
131 void *dev_private_data;
133 u32 __iomem *gatt_table;
134 u32 *gatt_table_real;
135 unsigned long scratch_page;
136 unsigned long scratch_page_real;
137 unsigned long gart_bus_addr;
138 unsigned long gatt_bus_addr;
140 enum chipset_type type;
141 unsigned long *key_list;
142 atomic_t current_memory_agp;
144 int max_memory_agp; /* in number of pages */
145 int aperture_size_idx;
150 struct list_head list;
154 #define KB(x) ((x) * 1024)
155 #define MB(x) (KB (KB (x)))
156 #define GB(x) (MB (KB (x)))
158 #define A_SIZE_8(x) ((struct aper_size_info_8 *) x)
159 #define A_SIZE_16(x) ((struct aper_size_info_16 *) x)
160 #define A_SIZE_32(x) ((struct aper_size_info_32 *) x)
161 #define A_SIZE_LVL2(x) ((struct aper_size_info_lvl2 *) x)
162 #define A_SIZE_FIX(x) ((struct aper_size_info_fixed *) x)
163 #define A_IDX8(bridge) (A_SIZE_8((bridge)->driver->aperture_sizes) + i)
164 #define A_IDX16(bridge) (A_SIZE_16((bridge)->driver->aperture_sizes) + i)
165 #define A_IDX32(bridge) (A_SIZE_32((bridge)->driver->aperture_sizes) + i)
166 #define MAXKEY (4096 * 32)
168 #define PGE_EMPTY(b, p) (!(p) || (p) == (unsigned long) (b)->scratch_page)
171 /* Intel registers */
172 #define INTEL_APSIZE 0xb4
173 #define INTEL_ATTBASE 0xb8
174 #define INTEL_AGPCTRL 0xb0
175 #define INTEL_NBXCFG 0x50
176 #define INTEL_ERRSTS 0x91
178 /* Intel i830 registers */
179 #define I830_GMCH_CTRL 0x52
180 #define I830_GMCH_ENABLED 0x4
181 #define I830_GMCH_MEM_MASK 0x1
182 #define I830_GMCH_MEM_64M 0x1
183 #define I830_GMCH_MEM_128M 0
184 #define I830_GMCH_GMS_MASK 0x70
185 #define I830_GMCH_GMS_DISABLED 0x00
186 #define I830_GMCH_GMS_LOCAL 0x10
187 #define I830_GMCH_GMS_STOLEN_512 0x20
188 #define I830_GMCH_GMS_STOLEN_1024 0x30
189 #define I830_GMCH_GMS_STOLEN_8192 0x40
190 #define I830_RDRAM_CHANNEL_TYPE 0x03010
191 #define I830_RDRAM_ND(x) (((x) & 0x20) >> 5)
192 #define I830_RDRAM_DDT(x) (((x) & 0x18) >> 3)
194 /* This one is for I830MP w. an external graphic card */
195 #define INTEL_I830_ERRSTS 0x92
197 /* Intel 855GM/852GM registers */
198 #define I855_GMCH_GMS_MASK 0xF0
199 #define I855_GMCH_GMS_STOLEN_0M 0x0
200 #define I855_GMCH_GMS_STOLEN_1M (0x1 << 4)
201 #define I855_GMCH_GMS_STOLEN_4M (0x2 << 4)
202 #define I855_GMCH_GMS_STOLEN_8M (0x3 << 4)
203 #define I855_GMCH_GMS_STOLEN_16M (0x4 << 4)
204 #define I855_GMCH_GMS_STOLEN_32M (0x5 << 4)
205 #define I85X_CAPID 0x44
206 #define I85X_VARIANT_MASK 0x7
207 #define I85X_VARIANT_SHIFT 5
213 /* Intel i845 registers */
214 #define INTEL_I845_AGPM 0x51
215 #define INTEL_I845_ERRSTS 0xc8
217 /* Intel i860 registers */
218 #define INTEL_I860_MCHCFG 0x50
219 #define INTEL_I860_ERRSTS 0xc8
221 /* Intel i810 registers */
222 #define I810_GMADDR 0x10
223 #define I810_MMADDR 0x14
224 #define I810_PTE_BASE 0x10000
225 #define I810_PTE_MAIN_UNCACHED 0x00000000
226 #define I810_PTE_LOCAL 0x00000002
227 #define I810_PTE_VALID 0x00000001
228 #define I830_PTE_SYSTEM_CACHED 0x00000006
229 #define I810_SMRAM_MISCC 0x70
230 #define I810_GFX_MEM_WIN_SIZE 0x00010000
231 #define I810_GFX_MEM_WIN_32M 0x00010000
232 #define I810_GMS 0x000000c0
233 #define I810_GMS_DISABLE 0x00000000
234 #define I810_PGETBL_CTL 0x2020
235 #define I810_PGETBL_ENABLED 0x00000001
236 #define I965_PGETBL_SIZE_MASK 0x0000000e
237 #define I965_PGETBL_SIZE_512KB (0 << 1)
238 #define I965_PGETBL_SIZE_256KB (1 << 1)
239 #define I965_PGETBL_SIZE_128KB (2 << 1)
240 #define I965_PGETBL_SIZE_1MB (3 << 1)
241 #define I965_PGETBL_SIZE_2MB (4 << 1)
242 #define I965_PGETBL_SIZE_1_5MB (5 << 1)
243 #define G33_PGETBL_SIZE_MASK (3 << 8)
244 #define G33_PGETBL_SIZE_1M (1 << 8)
245 #define G33_PGETBL_SIZE_2M (2 << 8)
247 #define I810_DRAM_CTL 0x3000
248 #define I810_DRAM_ROW_0 0x00000001
249 #define I810_DRAM_ROW_0_SDRAM 0x00000001
251 struct agp_device_ids {
252 unsigned short device_id; /* first, to make table easier to read */
253 enum chipset_type chipset;
254 const char *chipset_name;
255 int (*chipset_setup) (struct pci_dev *pdev); /* used to override generic */
258 /* Driver registration */
259 struct agp_bridge_data *agp_alloc_bridge(void);
260 void agp_put_bridge(struct agp_bridge_data *bridge);
261 int agp_add_bridge(struct agp_bridge_data *bridge);
262 void agp_remove_bridge(struct agp_bridge_data *bridge);
264 /* Frontend routines. */
265 int agp_frontend_initialize(void);
266 void agp_frontend_cleanup(void);
268 /* Generic routines. */
269 void agp_generic_enable(struct agp_bridge_data *bridge, u32 mode);
270 int agp_generic_create_gatt_table(struct agp_bridge_data *bridge);
271 int agp_generic_free_gatt_table(struct agp_bridge_data *bridge);
272 struct agp_memory *agp_create_memory(int scratch_pages);
273 int agp_generic_insert_memory(struct agp_memory *mem, off_t pg_start, int type);
274 int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
275 struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
276 void agp_generic_free_by_type(struct agp_memory *curr);
277 void *agp_generic_alloc_page(struct agp_bridge_data *bridge);
278 int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
279 struct agp_memory *memory, size_t page_count);
280 void agp_generic_destroy_page(void *addr, int flags);
281 void agp_free_key(int key);
282 int agp_num_entries(void);
283 u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 mode, u32 command);
284 void agp_device_command(u32 command, bool agp_v3);
285 int agp_3_5_enable(struct agp_bridge_data *bridge);
286 void global_cache_flush(void);
287 void get_agp_version(struct agp_bridge_data *bridge);
288 unsigned long agp_generic_mask_memory(struct agp_bridge_data *bridge,
289 unsigned long addr, int type);
290 int agp_generic_type_to_mask_type(struct agp_bridge_data *bridge,
292 struct agp_bridge_data *agp_generic_find_bridge(struct pci_dev *pdev);
294 /* generic functions for user-populated AGP memory types */
295 struct agp_memory *agp_generic_alloc_user(size_t page_count, int type);
296 void agp_alloc_page_array(size_t size, struct agp_memory *mem);
297 void agp_free_page_array(struct agp_memory *mem);
300 /* generic routines for agp>=3 */
301 int agp3_generic_fetch_size(void);
302 void agp3_generic_tlbflush(struct agp_memory *mem);
303 int agp3_generic_configure(void);
304 void agp3_generic_cleanup(void);
306 /* aperture sizes have been standardised since v3 */
307 #define AGP_GENERIC_SIZES_ENTRIES 11
308 extern const struct aper_size_info_16 agp3_generic_sizes[];
310 #define virt_to_gart(x) (phys_to_gart(virt_to_phys(x)))
311 #define gart_to_virt(x) (phys_to_virt(gart_to_phys(x)))
314 extern int agp_try_unsupported_boot;
316 long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
318 /* Chipset independant registers (from AGP Spec) */
319 #define AGP_APBASE 0x10
323 #define AGPNISTAT 0xc
325 #define AGPAPSIZE 0x14
327 #define AGPGARTLO 0x18
328 #define AGPGARTHI 0x1c
329 #define AGPNICMD 0x20
331 #define AGP_MAJOR_VERSION_SHIFT (20)
332 #define AGP_MINOR_VERSION_SHIFT (16)
334 #define AGPSTAT_RQ_DEPTH (0xff000000)
335 #define AGPSTAT_RQ_DEPTH_SHIFT 24
337 #define AGPSTAT_CAL_MASK (1<<12|1<<11|1<<10)
338 #define AGPSTAT_ARQSZ (1<<15|1<<14|1<<13)
339 #define AGPSTAT_ARQSZ_SHIFT 13
341 #define AGPSTAT_SBA (1<<9)
342 #define AGPSTAT_AGP_ENABLE (1<<8)
343 #define AGPSTAT_FW (1<<4)
344 #define AGPSTAT_MODE_3_0 (1<<3)
346 #define AGPSTAT2_1X (1<<0)
347 #define AGPSTAT2_2X (1<<1)
348 #define AGPSTAT2_4X (1<<2)
350 #define AGPSTAT3_RSVD (1<<2)
351 #define AGPSTAT3_8X (1<<1)
352 #define AGPSTAT3_4X (1)
354 #define AGPCTRL_APERENB (1<<8)
355 #define AGPCTRL_GTLBEN (1<<7)
357 #define AGP2_RESERVED_MASK 0x00fffcc8
358 #define AGP3_RESERVED_MASK 0x00ff00c4
360 #define AGP_ERRATA_FASTWRITES 1<<0
361 #define AGP_ERRATA_SBA 1<<1
362 #define AGP_ERRATA_1X 1<<2
364 #endif /* _AGP_BACKEND_PRIV_H */