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 33 #ifdef __KERNEL__ 34 35 #ifndef TRUE 36 #define TRUE 1 37 #endif 38 39 #ifndef FALSE 40 #define FALSE 0 41 #endif 42 43 enum chipset_type { 44 NOT_SUPPORTED, 45 SUPPORTED, 46 }; 47 48 struct agp_version { 49 u16 major; 50 u16 minor; 51 }; 52 53 struct agp_kern_info { 54 struct agp_version version; 55 struct pci_dev *device; 56 enum chipset_type chipset; 57 unsigned long mode; 58 unsigned long aper_base; 59 size_t aper_size; 60 int max_memory; /* In pages */ 61 int current_memory; 62 int cant_use_aperture; 63 unsigned long page_mask; 64 struct vm_operations_struct *vm_ops; 65 }; 66 67 /* 68 * The agp_memory structure has information about the block of agp memory 69 * allocated. A caller may manipulate the next and prev pointers to link 70 * each allocated item into a list. These pointers are ignored by the backend. 71 * Everything else should never be written to, but the caller may read any of 72 * the items to determine the status of this block of agp memory. 73 */ 74 75 struct agp_bridge_data; 76 77 struct agp_memory { 78 struct agp_memory *next; 79 struct agp_memory *prev; 80 struct agp_bridge_data *bridge; 81 unsigned long *memory; 82 size_t page_count; 83 int key; 84 int num_scratch_pages; 85 off_t pg_start; 86 u32 type; 87 u32 physical; 88 u8 is_bound; 89 u8 is_flushed; 90 u8 vmalloc_flag; 91 }; 92 93 #define AGP_NORMAL_MEMORY 0 94 95 #define AGP_USER_TYPES (1 << 16) 96 #define AGP_USER_MEMORY (AGP_USER_TYPES) 97 #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) 98 99 extern struct agp_bridge_data *agp_bridge; 100 extern struct list_head agp_bridges; 101 102 extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *); 103 104 extern void agp_free_memory(struct agp_memory *); 105 extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32); 106 extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *); 107 extern int agp_bind_memory(struct agp_memory *, off_t); 108 extern int agp_unbind_memory(struct agp_memory *); 109 extern void agp_enable(struct agp_bridge_data *, u32); 110 extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); 111 extern void agp_backend_release(struct agp_bridge_data *); 112 113 #endif /* __KERNEL__ */ 114 #endif /* _AGP_BACKEND_H */ 115