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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 | enum chipset_type { |
34 | NOT_SUPPORTED, | |
35 | SUPPORTED, | |
36 | }; | |
37 | ||
38 | struct agp_version { | |
39 | u16 major; | |
40 | u16 minor; | |
41 | }; | |
42 | ||
43 | struct agp_kern_info { | |
44 | struct agp_version version; | |
45 | struct pci_dev *device; | |
46 | enum chipset_type chipset; | |
47 | unsigned long mode; | |
48 | unsigned long aper_base; | |
49 | size_t aper_size; | |
50 | int max_memory; /* In pages */ | |
51 | int current_memory; | |
c7258012 | 52 | bool cant_use_aperture; |
1da177e4 LT |
53 | unsigned long page_mask; |
54 | struct vm_operations_struct *vm_ops; | |
55 | }; | |
56 | ||
57 | /* | |
58 | * The agp_memory structure has information about the block of agp memory | |
59 | * allocated. A caller may manipulate the next and prev pointers to link | |
60 | * each allocated item into a list. These pointers are ignored by the backend. | |
61 | * Everything else should never be written to, but the caller may read any of | |
62 | * the items to determine the status of this block of agp memory. | |
63 | */ | |
64 | ||
65 | struct agp_bridge_data; | |
66 | ||
67 | struct agp_memory { | |
68 | struct agp_memory *next; | |
69 | struct agp_memory *prev; | |
70 | struct agp_bridge_data *bridge; | |
71 | unsigned long *memory; | |
72 | size_t page_count; | |
73 | int key; | |
74 | int num_scratch_pages; | |
75 | off_t pg_start; | |
76 | u32 type; | |
77 | u32 physical; | |
c7258012 JP |
78 | bool is_bound; |
79 | bool is_flushed; | |
9516b030 | 80 | bool vmalloc_flag; |
1da177e4 LT |
81 | }; |
82 | ||
83 | #define AGP_NORMAL_MEMORY 0 | |
84 | ||
a030ce44 TH |
85 | #define AGP_USER_TYPES (1 << 16) |
86 | #define AGP_USER_MEMORY (AGP_USER_TYPES) | |
87 | #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) | |
88 | ||
1da177e4 LT |
89 | extern struct agp_bridge_data *agp_bridge; |
90 | extern struct list_head agp_bridges; | |
91 | ||
92 | extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *); | |
93 | ||
94 | extern void agp_free_memory(struct agp_memory *); | |
95 | extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32); | |
96 | extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *); | |
97 | extern int agp_bind_memory(struct agp_memory *, off_t); | |
98 | extern int agp_unbind_memory(struct agp_memory *); | |
99 | extern void agp_enable(struct agp_bridge_data *, u32); | |
100 | extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); | |
101 | extern void agp_backend_release(struct agp_bridge_data *); | |
a13af4b4 | 102 | extern void agp_flush_chipset(struct agp_bridge_data *); |
1da177e4 | 103 | |
1da177e4 | 104 | #endif /* _AGP_BACKEND_H */ |