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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
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.
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
38 : : #define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __func__ , ## y)
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;
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 */
59 : : };
60 : :
61 : : #define AGP_PAGE_DESTROY_UNMAP 1
62 : : #define AGP_PAGE_DESTROY_FREE 2
63 : :
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;
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 *, dma_addr_t, 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 : : struct page *(*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)(struct page *, int flags);
121 : : void (*agp_destroy_pages)(struct agp_memory *);
122 : : int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
123 : : };
124 : :
125 : : struct agp_bridge_data {
126 : : const struct agp_version *version;
127 : : const struct agp_bridge_driver *driver;
128 : : const struct vm_operations_struct *vm_ops;
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;
136 : : struct page *scratch_page_page;
137 : : dma_addr_t scratch_page_dma;
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;
152 : : u32 apbase_config;
153 : : /* list of agp_memory mapped to the aperture */
154 : : struct list_head mapped_list;
155 : : spinlock_t mapped_lock;
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 : :
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);
201 : : struct page *agp_generic_alloc_page(struct agp_bridge_data *bridge);
202 : : int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
203 : : struct agp_memory *memory, size_t page_count);
204 : : void agp_generic_destroy_page(struct page *page, int flags);
205 : : void agp_generic_destroy_pages(struct agp_memory *memory);
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);
209 : : void agp_device_command(u32 command, bool agp_v3);
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,
214 : : dma_addr_t phys, int type);
215 : : int agp_generic_type_to_mask_type(struct agp_bridge_data *bridge,
216 : : int type);
217 : : struct agp_bridge_data *agp_generic_find_bridge(struct pci_dev *pdev);
218 : :
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 : 0 : static inline void agp_free_page_array(struct agp_memory *mem)
223 : : {
224 : 0 : kvfree(mem->pages);
225 : 0 : }
226 : :
227 : :
228 : : /* generic routines for agp>=3 */
229 : : int agp3_generic_fetch_size(void);
230 : : void agp3_generic_tlbflush(struct agp_memory *mem);
231 : : int agp3_generic_configure(void);
232 : : void agp3_generic_cleanup(void);
233 : :
234 : : /* aperture sizes have been standardised since v3 */
235 : : #define AGP_GENERIC_SIZES_ENTRIES 11
236 : : extern const struct aper_size_info_16 agp3_generic_sizes[];
237 : :
238 : : extern int agp_off;
239 : : extern int agp_try_unsupported_boot;
240 : :
241 : : long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
242 : :
243 : : /* Chipset independent registers (from AGP Spec) */
244 : : #define AGP_APBASE 0x10
245 : : #define AGP_APERTURE_BAR 0
246 : :
247 : : #define AGPSTAT 0x4
248 : : #define AGPCMD 0x8
249 : : #define AGPNISTAT 0xc
250 : : #define AGPCTRL 0x10
251 : : #define AGPAPSIZE 0x14
252 : : #define AGPNEPG 0x16
253 : : #define AGPGARTLO 0x18
254 : : #define AGPGARTHI 0x1c
255 : : #define AGPNICMD 0x20
256 : :
257 : : #define AGP_MAJOR_VERSION_SHIFT (20)
258 : : #define AGP_MINOR_VERSION_SHIFT (16)
259 : :
260 : : #define AGPSTAT_RQ_DEPTH (0xff000000)
261 : : #define AGPSTAT_RQ_DEPTH_SHIFT 24
262 : :
263 : : #define AGPSTAT_CAL_MASK (1<<12|1<<11|1<<10)
264 : : #define AGPSTAT_ARQSZ (1<<15|1<<14|1<<13)
265 : : #define AGPSTAT_ARQSZ_SHIFT 13
266 : :
267 : : #define AGPSTAT_SBA (1<<9)
268 : : #define AGPSTAT_AGP_ENABLE (1<<8)
269 : : #define AGPSTAT_FW (1<<4)
270 : : #define AGPSTAT_MODE_3_0 (1<<3)
271 : :
272 : : #define AGPSTAT2_1X (1<<0)
273 : : #define AGPSTAT2_2X (1<<1)
274 : : #define AGPSTAT2_4X (1<<2)
275 : :
276 : : #define AGPSTAT3_RSVD (1<<2)
277 : : #define AGPSTAT3_8X (1<<1)
278 : : #define AGPSTAT3_4X (1)
279 : :
280 : : #define AGPCTRL_APERENB (1<<8)
281 : : #define AGPCTRL_GTLBEN (1<<7)
282 : :
283 : : #define AGP2_RESERVED_MASK 0x00fffcc8
284 : : #define AGP3_RESERVED_MASK 0x00ff00c4
285 : :
286 : : #define AGP_ERRATA_FASTWRITES 1<<0
287 : : #define AGP_ERRATA_SBA 1<<1
288 : : #define AGP_ERRATA_1X 1<<2
289 : :
290 : : #endif /* _AGP_BACKEND_PRIV_H */
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