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 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; 52 bool cant_use_aperture; 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; 78 bool is_bound; 79 bool is_flushed; 80 bool vmalloc_flag; 81 }; 82 83 #define AGP_NORMAL_MEMORY 0 84 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 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 *); 102 extern void agp_flush_chipset(struct agp_bridge_data *); 103 104 #endif /* _AGP_BACKEND_H */ 105