1 /* 2 * AGPGART module version 0.99 3 * Copyright (C) 1999 Jeff Hartmann 4 * Copyright (C) 1999 Precision Insight, Inc. 5 * Copyright (C) 1999 Xi Graphics, Inc. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 23 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 */ 26 #ifndef _AGP_H 27 #define _AGP_H 1 28 29 #include <linux/mutex.h> 30 #include <linux/agp_backend.h> 31 #include <uapi/linux/agpgart.h> 32 33 struct agp_info { 34 struct agp_version version; /* version of the driver */ 35 u32 bridge_id; /* bridge vendor/device */ 36 u32 agp_mode; /* mode info of bridge */ 37 unsigned long aper_base;/* base of aperture */ 38 size_t aper_size; /* size of aperture */ 39 size_t pg_total; /* max pages (swap + system) */ 40 size_t pg_system; /* max pages (system) */ 41 size_t pg_used; /* current pages used */ 42 }; 43 44 struct agp_setup { 45 u32 agp_mode; /* mode info of bridge */ 46 }; 47 48 /* 49 * The "prot" down below needs still a "sleep" flag somehow ... 50 */ 51 struct agp_segment { 52 off_t pg_start; /* starting page to populate */ 53 size_t pg_count; /* number of pages */ 54 int prot; /* prot flags for mmap */ 55 }; 56 57 struct agp_segment_priv { 58 off_t pg_start; 59 size_t pg_count; 60 pgprot_t prot; 61 }; 62 63 struct agp_region { 64 pid_t pid; /* pid of process */ 65 size_t seg_count; /* number of segments */ 66 struct agp_segment *seg_list; 67 }; 68 69 struct agp_allocate { 70 int key; /* tag of allocation */ 71 size_t pg_count; /* number of pages */ 72 u32 type; /* 0 == normal, other devspec */ 73 u32 physical; /* device specific (some devices 74 * need a phys address of the 75 * actual page behind the gatt 76 * table) */ 77 }; 78 79 struct agp_bind { 80 int key; /* tag of allocation */ 81 off_t pg_start; /* starting page to populate */ 82 }; 83 84 struct agp_unbind { 85 int key; /* tag of allocation */ 86 u32 priority; /* priority for paging out */ 87 }; 88 89 struct agp_client { 90 struct agp_client *next; 91 struct agp_client *prev; 92 pid_t pid; 93 int num_segments; 94 struct agp_segment_priv **segments; 95 }; 96 97 struct agp_controller { 98 struct agp_controller *next; 99 struct agp_controller *prev; 100 pid_t pid; 101 int num_clients; 102 struct agp_memory *pool; 103 struct agp_client *clients; 104 }; 105 106 #define AGP_FF_ALLOW_CLIENT 0 107 #define AGP_FF_ALLOW_CONTROLLER 1 108 #define AGP_FF_IS_CLIENT 2 109 #define AGP_FF_IS_CONTROLLER 3 110 #define AGP_FF_IS_VALID 4 111 112 struct agp_file_private { 113 struct agp_file_private *next; 114 struct agp_file_private *prev; 115 pid_t my_pid; 116 unsigned long access_flags; /* long req'd for set_bit --RR */ 117 }; 118 119 struct agp_front_data { 120 struct mutex agp_mutex; 121 struct agp_controller *current_controller; 122 struct agp_controller *controllers; 123 struct agp_file_private *file_priv_list; 124 bool used_by_controller; 125 bool backend_acquired; 126 }; 127 128 #endif /* _AGP_H */ 129