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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * AGPGART backend specific includes. Not for userspace consumption. |
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| 3 | * |
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| 4 | * Copyright (C) 2002-2003 Dave Jones |
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| 5 | * Copyright (C) 1999 Jeff Hartmann |
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| 6 | * Copyright (C) 1999 Precision Insight, Inc. |
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| 7 | * Copyright (C) 1999 Xi Graphics, Inc. |
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| 8 | * |
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 10 | * copy of this software and associated documentation files (the "Software"), |
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| 11 | * to deal in the Software without restriction, including without limitation |
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 14 | * Software is furnished to do so, subject to the following conditions: |
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| 15 | * |
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| 16 | * The above copyright notice and this permission notice shall be included |
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| 17 | * in all copies or substantial portions of the Software. |
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| 18 | * |
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 22 | * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, |
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| 23 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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| 24 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE |
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| 25 | * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 26 | * |
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| 27 | */ |
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| 28 | |||
| 29 | #ifndef _AGP_BACKEND_H |
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| 30 | #define _AGP_BACKEND_H 1 |
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| 31 | |||
| 32 | #ifdef __KERNEL__ |
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| 33 | |||
| 34 | #ifndef TRUE |
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| 35 | #define TRUE 1 |
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| 36 | #endif |
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| 37 | |||
| 38 | #ifndef FALSE |
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| 39 | #define FALSE 0 |
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| 40 | #endif |
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| 41 | |||
| 42 | enum chipset_type { |
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| 43 | NOT_SUPPORTED, |
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| 44 | SUPPORTED, |
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| 45 | }; |
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| 46 | |||
| 47 | struct agp_version { |
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| 48 | u16 major; |
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| 49 | u16 minor; |
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| 50 | }; |
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| 51 | |||
| 52 | struct agp_kern_info { |
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| 53 | struct agp_version version; |
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| 54 | struct pci_dev *device; |
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| 55 | enum chipset_type chipset; |
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| 56 | unsigned long mode; |
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| 57 | off_t aper_base; |
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| 58 | size_t aper_size; |
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| 59 | int max_memory; /* In pages */ |
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| 60 | int current_memory; |
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| 61 | int cant_use_aperture; |
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| 62 | unsigned long page_mask; |
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| 63 | struct vm_operations_struct *vm_ops; |
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| 64 | }; |
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| 65 | |||
| 66 | /* |
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| 67 | * The agp_memory structure has information about the block of agp memory |
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| 68 | * allocated. A caller may manipulate the next and prev pointers to link |
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| 69 | * each allocated item into a list. These pointers are ignored by the backend. |
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| 70 | * Everything else should never be written to, but the caller may read any of |
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| 71 | * the items to detrimine the status of this block of agp memory. |
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| 72 | */ |
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| 73 | |||
| 74 | struct agp_memory { |
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| 75 | int key; |
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| 76 | struct agp_memory *next; |
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| 77 | struct agp_memory *prev; |
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| 78 | size_t page_count; |
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| 79 | int num_scratch_pages; |
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| 80 | unsigned long *memory; |
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| 81 | off_t pg_start; |
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| 82 | u32 type; |
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| 83 | u32 physical; |
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| 84 | u8 is_bound; |
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| 85 | u8 is_flushed; |
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| 86 | }; |
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| 87 | |||
| 88 | #define AGP_NORMAL_MEMORY 0 |
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| 89 | |||
| 90 | extern void agp_free_memory(struct agp_memory *); |
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| 91 | extern struct agp_memory *agp_allocate_memory(size_t, u32); |
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| 92 | extern int agp_copy_info(struct agp_kern_info *); |
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| 93 | extern int agp_bind_memory(struct agp_memory *, off_t); |
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| 94 | extern int agp_unbind_memory(struct agp_memory *); |
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| 95 | extern void agp_enable(u32); |
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| 96 | extern int agp_backend_acquire(void); |
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| 97 | extern void agp_backend_release(void); |
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| 98 | |||
| 99 | /* |
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| 100 | * Interface between drm and agp code. When agp initializes, it makes |
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| 101 | * the below structure available via inter_module_register(), drm might |
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| 102 | * use it. Keith Owens <kaos@ocs.com.au> 28 Oct 2000. |
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| 103 | */ |
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| 104 | typedef struct { |
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| 105 | void (*free_memory)(struct agp_memory *); |
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| 106 | struct agp_memory * (*allocate_memory)(size_t, u32); |
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| 107 | int (*bind_memory)(struct agp_memory *, off_t); |
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| 108 | int (*unbind_memory)(struct agp_memory *); |
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| 109 | void (*enable)(u32); |
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| 110 | int (*acquire)(void); |
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| 111 | void (*release)(void); |
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| 112 | int (*copy_info)(struct agp_kern_info *); |
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| 113 | } drm_agp_t; |
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| 114 | |||
| 115 | extern const drm_agp_t *drm_agp_p; |
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| 116 | |||
| 117 | #endif /* __KERNEL__ */ |
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| 118 | #endif /* _AGP_BACKEND_H */ |