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 #define AGPGART_MINOR 175 34 35 struct agp_info { 36 struct agp_version version; /* version of the driver */ 37 u32 bridge_id; /* bridge vendor/device */ 38 u32 agp_mode; /* mode info of bridge */ 39 unsigned long aper_base;/* base of aperture */ 40 size_t aper_size; /* size of aperture */ 41 size_t pg_total; /* max pages (swap + system) */ 42 size_t pg_system; /* max pages (system) */ 43 size_t pg_used; /* current pages used */ 44 }; 45 46 struct agp_setup { 47 u32 agp_mode; /* mode info of bridge */ 48 }; 49 50 /* 51 * The "prot" down below needs still a "sleep" flag somehow ... 52 */ 53 struct agp_segment { 54 off_t pg_start; /* starting page to populate */ 55 size_t pg_count; /* number of pages */ 56 int prot; /* prot flags for mmap */ 57 }; 58 59 struct agp_segment_priv { 60 off_t pg_start; 61 size_t pg_count; 62 pgprot_t prot; 63 }; 64 65 struct agp_region { 66 pid_t pid; /* pid of process */ 67 size_t seg_count; /* number of segments */ 68 struct agp_segment *seg_list; 69 }; 70 71 struct agp_allocate { 72 int key; /* tag of allocation */ 73 size_t pg_count; /* number of pages */ 74 u32 type; /* 0 == normal, other devspec */ 75 u32 physical; /* device specific (some devices 76 * need a phys address of the 77 * actual page behind the gatt 78 * table) */ 79 }; 80 81 struct agp_bind { 82 int key; /* tag of allocation */ 83 off_t pg_start; /* starting page to populate */ 84 }; 85 86 struct agp_unbind { 87 int key; /* tag of allocation */ 88 u32 priority; /* priority for paging out */ 89 }; 90 91 struct agp_client { 92 struct agp_client *next; 93 struct agp_client *prev; 94 pid_t pid; 95 int num_segments; 96 struct agp_segment_priv **segments; 97 }; 98 99 struct agp_controller { 100 struct agp_controller *next; 101 struct agp_controller *prev; 102 pid_t pid; 103 int num_clients; 104 struct agp_memory *pool; 105 struct agp_client *clients; 106 }; 107 108 #define AGP_FF_ALLOW_CLIENT 0 109 #define AGP_FF_ALLOW_CONTROLLER 1 110 #define AGP_FF_IS_CLIENT 2 111 #define AGP_FF_IS_CONTROLLER 3 112 #define AGP_FF_IS_VALID 4 113 114 struct agp_file_private { 115 struct agp_file_private *next; 116 struct agp_file_private *prev; 117 pid_t my_pid; 118 unsigned long access_flags; /* long req'd for set_bit --RR */ 119 }; 120 121 struct agp_front_data { 122 struct mutex agp_mutex; 123 struct agp_controller *current_controller; 124 struct agp_controller *controllers; 125 struct agp_file_private *file_priv_list; 126 bool used_by_controller; 127 bool backend_acquired; 128 }; 129 130 #endif /* _AGP_H */ 131