include/linux/agpgart.h

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