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 27 #ifndef _AGP_H 28 #define _AGP_H 1 29 30 #define AGPIOC_BASE 'A' 31 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info*) 32 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) 33 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) 34 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup*) 35 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region*) 36 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region*) 37 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate*) 38 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) 39 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind*) 40 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind*) 41 42 #define AGP_DEVICE "/dev/agpgart" 43 44 #ifndef TRUE 45 #define TRUE 1 46 #endif 47 48 #ifndef FALSE 49 #define FALSE 0 50 #endif 51 52 #ifndef __KERNEL__ 53 #include <linux/types.h> 54 #include <asm/types.h> 55 56 typedef struct _agp_version { 57 __u16 major; 58 __u16 minor; 59 } agp_version; 60 61 typedef struct _agp_info { 62 agp_version version; /* version of the driver */ 63 __u32 bridge_id; /* bridge vendor/device */ 64 __u32 agp_mode; /* mode info of bridge */ 65 off_t aper_base; /* base of aperture */ 66 size_t aper_size; /* size of aperture */ 67 size_t pg_total; /* max pages (swap + system) */ 68 size_t pg_system; /* max pages (system) */ 69 size_t pg_used; /* current pages used */ 70 } agp_info; 71 72 typedef struct _agp_setup { 73 __u32 agp_mode; /* mode info of bridge */ 74 } agp_setup; 75 76 /* 77 * The "prot" down below needs still a "sleep" flag somehow ... 78 */ 79 typedef struct _agp_segment { 80 off_t pg_start; /* starting page to populate */ 81 size_t pg_count; /* number of pages */ 82 int prot; /* prot flags for mmap */ 83 } agp_segment; 84 85 typedef struct _agp_region { 86 pid_t pid; /* pid of process */ 87 size_t seg_count; /* number of segments */ 88 struct _agp_segment *seg_list; 89 } agp_region; 90 91 typedef struct _agp_allocate { 92 int key; /* tag of allocation */ 93 size_t pg_count; /* number of pages */ 94 __u32 type; /* 0 == normal, other devspec */ 95 __u32 physical; /* device specific (some devices 96 * need a phys address of the 97 * actual page behind the gatt 98 * table) */ 99 } agp_allocate; 100 101 typedef struct _agp_bind { 102 int key; /* tag of allocation */ 103 off_t pg_start; /* starting page to populate */ 104 } agp_bind; 105 106 typedef struct _agp_unbind { 107 int key; /* tag of allocation */ 108 __u32 priority; /* priority for paging out */ 109 } agp_unbind; 110 111 #else /* __KERNEL__ */ 112 113 #define AGPGART_MINOR 175 114 115 #define AGP_UNLOCK() up(&(agp_fe.agp_mutex)); 116 #define AGP_LOCK() down(&(agp_fe.agp_mutex)); 117 #define AGP_LOCK_INIT() sema_init(&(agp_fe.agp_mutex), 1) 118 119 #ifndef _AGP_BACKEND_H 120 typedef struct _agp_version { 121 u16 major; 122 u16 minor; 123 } agp_version; 124 125 #endif 126 127 typedef struct _agp_info { 128 agp_version version; /* version of the driver */ 129 u32 bridge_id; /* bridge vendor/device */ 130 u32 agp_mode; /* mode info of bridge */ 131 off_t aper_base; /* base of aperture */ 132 size_t aper_size; /* size of aperture */ 133 size_t pg_total; /* max pages (swap + system) */ 134 size_t pg_system; /* max pages (system) */ 135 size_t pg_used; /* current pages used */ 136 } agp_info; 137 138 typedef struct _agp_setup { 139 u32 agp_mode; /* mode info of bridge */ 140 } agp_setup; 141 142 /* 143 * The "prot" down below needs still a "sleep" flag somehow ... 144 */ 145 typedef struct _agp_segment { 146 off_t pg_start; /* starting page to populate */ 147 size_t pg_count; /* number of pages */ 148 int prot; /* prot flags for mmap */ 149 } agp_segment; 150 151 typedef struct _agp_segment_priv { 152 off_t pg_start; 153 size_t pg_count; 154 pgprot_t prot; 155 } agp_segment_priv; 156 157 typedef struct _agp_region { 158 pid_t pid; /* pid of process */ 159 size_t seg_count; /* number of segments */ 160 struct _agp_segment *seg_list; 161 } agp_region; 162 163 typedef struct _agp_allocate { 164 int key; /* tag of allocation */ 165 size_t pg_count; /* number of pages */ 166 u32 type; /* 0 == normal, other devspec */ 167 u32 physical; /* device specific (some devices 168 * need a phys address of the 169 * actual page behind the gatt 170 * table) */ 171 } agp_allocate; 172 173 typedef struct _agp_bind { 174 int key; /* tag of allocation */ 175 off_t pg_start; /* starting page to populate */ 176 } agp_bind; 177 178 typedef struct _agp_unbind { 179 int key; /* tag of allocation */ 180 u32 priority; /* priority for paging out */ 181 } agp_unbind; 182 183 typedef struct _agp_client { 184 struct _agp_client *next; 185 struct _agp_client *prev; 186 pid_t pid; 187 int num_segments; 188 agp_segment_priv **segments; 189 } agp_client; 190 191 typedef struct _agp_controller { 192 struct _agp_controller *next; 193 struct _agp_controller *prev; 194 pid_t pid; 195 int num_clients; 196 agp_memory *pool; 197 agp_client *clients; 198 } agp_controller; 199 200 #define AGP_FF_ALLOW_CLIENT 0 201 #define AGP_FF_ALLOW_CONTROLLER 1 202 #define AGP_FF_IS_CLIENT 2 203 #define AGP_FF_IS_CONTROLLER 3 204 #define AGP_FF_IS_VALID 4 205 206 typedef struct _agp_file_private { 207 struct _agp_file_private *next; 208 struct _agp_file_private *prev; 209 pid_t my_pid; 210 long access_flags; /* long req'd for set_bit --RR */ 211 } agp_file_private; 212 213 struct agp_front_data { 214 struct semaphore agp_mutex; 215 agp_controller *current_controller; 216 agp_controller *controllers; 217 agp_file_private *file_priv_list; 218 u8 used_by_controller; 219 u8 backend_acquired; 220 }; 221 222 #endif /* __KERNEL__ */ 223 224 #endif /* _AGP_H */ 225