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 #define AGPIOC_BASE       'A'
  31 #define AGPIOC_INFO       _IOR (AGPIOC_BASE, 0, struct 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, struct agp_setup*)
  35 #define AGPIOC_RESERVE    _IOW (AGPIOC_BASE, 4, struct agp_region*)
  36 #define AGPIOC_PROTECT    _IOW (AGPIOC_BASE, 5, struct agp_region*)
  37 #define AGPIOC_ALLOCATE   _IOWR(AGPIOC_BASE, 6, struct agp_allocate*)
  38 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
  39 #define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, struct agp_bind*)
  40 #define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, struct agp_unbind*)
  41 #define AGPIOC_CHIPSET_FLUSH _IO (AGPIOC_BASE, 10)
  42
  43 #define AGP_DEVICE      "/dev/agpgart"
  44
  45 #ifndef TRUE
  46 #define TRUE 1
  47 #endif
  48
  49 #ifndef FALSE
  50 #define FALSE 0
  51 #endif
  52
  53 #ifndef __KERNEL__
  54 #include <linux/types.h>
  55 #include <asm/types.h>
  56
  57 struct agp_version {
  58         __u16 major;
  59         __u16 minor;
  60 };
  61
  62 typedef struct _agp_info {
  63         struct agp_version version;     /* version of the driver        */
  64         __u32 bridge_id;        /* bridge vendor/device         */
  65         __u32 agp_mode;         /* mode info of bridge          */
  66         unsigned long aper_base;/* base of aperture             */
  67         size_t aper_size;       /* size of aperture             */
  68         size_t pg_total;        /* max pages (swap + system)    */
  69         size_t pg_system;       /* max pages (system)           */
  70         size_t pg_used;         /* current pages used           */
  71 } agp_info;
  72
  73 typedef struct _agp_setup {
  74         __u32 agp_mode;         /* mode info of bridge          */
  75 } agp_setup;
  76
  77 /*
  78  * The "prot" down below needs still a "sleep" flag somehow ...
  79  */
  80 typedef struct _agp_segment {
  81         off_t pg_start;         /* starting page to populate    */
  82         size_t pg_count;        /* number of pages              */
  83         int prot;               /* prot flags for mmap          */
  84 } agp_segment;
  85
  86 typedef struct _agp_region {
  87         pid_t pid;              /* pid of process               */
  88         size_t seg_count;       /* number of segments           */
  89         struct _agp_segment *seg_list;
  90 } agp_region;
  91
  92 typedef struct _agp_allocate {
  93         int key;                /* tag of allocation            */
  94         size_t pg_count;        /* number of pages              */
  95         __u32 type;             /* 0 == normal, other devspec   */
  96         __u32 physical;         /* device specific (some devices
  97                                  * need a phys address of the
  98                                  * actual page behind the gatt
  99                                  * table)                        */
 100 } agp_allocate;
 101
 102 typedef struct _agp_bind {
 103         int key;                /* tag of allocation            */
 104         off_t pg_start;         /* starting page to populate    */
 105 } agp_bind;
 106
 107 typedef struct _agp_unbind {
 108         int key;                /* tag of allocation            */
 109         __u32 priority;         /* priority for paging out      */
 110 } agp_unbind;
 111
 112 #else                           /* __KERNEL__ */
 113 #include <linux/mutex.h>
 114 #include <linux/agp_backend.h>
 115
 116 #define AGPGART_MINOR 175
 117
 118 struct agp_info {
 119         struct agp_version version;     /* version of the driver        */
 120         u32 bridge_id;          /* bridge vendor/device         */
 121         u32 agp_mode;           /* mode info of bridge          */
 122         unsigned long aper_base;/* base of aperture             */
 123         size_t aper_size;       /* size of aperture             */
 124         size_t pg_total;        /* max pages (swap + system)    */
 125         size_t pg_system;       /* max pages (system)           */
 126         size_t pg_used;         /* current pages used           */
 127 };
 128
 129 struct agp_setup {
 130         u32 agp_mode;           /* mode info of bridge          */
 131 };
 132
 133 /*
 134  * The "prot" down below needs still a "sleep" flag somehow ...
 135  */
 136 struct agp_segment {
 137         off_t pg_start;         /* starting page to populate    */
 138         size_t pg_count;        /* number of pages              */
 139         int prot;               /* prot flags for mmap          */
 140 };
 141
 142 struct agp_segment_priv {
 143         off_t pg_start;
 144         size_t pg_count;
 145         pgprot_t prot;
 146 };
 147
 148 struct agp_region {
 149         pid_t pid;              /* pid of process               */
 150         size_t seg_count;       /* number of segments           */
 151         struct agp_segment *seg_list;
 152 };
 153
 154 struct agp_allocate {
 155         int key;                /* tag of allocation            */
 156         size_t pg_count;        /* number of pages              */
 157         u32 type;               /* 0 == normal, other devspec   */
 158         u32 physical;           /* device specific (some devices
 159                                  * need a phys address of the
 160                                  * actual page behind the gatt
 161                                  * table)                        */
 162 };
 163
 164 struct agp_bind {
 165         int key;                /* tag of allocation            */
 166         off_t pg_start;         /* starting page to populate    */
 167 };
 168
 169 struct agp_unbind {
 170         int key;                /* tag of allocation            */
 171         u32 priority;           /* priority for paging out      */
 172 };
 173
 174 struct agp_client {
 175         struct agp_client *next;
 176         struct agp_client *prev;
 177         pid_t pid;
 178         int num_segments;
 179         struct agp_segment_priv **segments;
 180 };
 181
 182 struct agp_controller {
 183         struct agp_controller *next;
 184         struct agp_controller *prev;
 185         pid_t pid;
 186         int num_clients;
 187         struct agp_memory *pool;
 188         struct agp_client *clients;
 189 };
 190
 191 #define AGP_FF_ALLOW_CLIENT             0
 192 #define AGP_FF_ALLOW_CONTROLLER         1
 193 #define AGP_FF_IS_CLIENT                2
 194 #define AGP_FF_IS_CONTROLLER            3
 195 #define AGP_FF_IS_VALID                 4
 196
 197 struct agp_file_private {
 198         struct agp_file_private *next;
 199         struct agp_file_private *prev;
 200         pid_t my_pid;
 201         unsigned long access_flags;     /* long req'd for set_bit --RR */
 202 };
 203
 204 struct agp_front_data {
 205         struct mutex agp_mutex;
 206         struct agp_controller *current_controller;
 207         struct agp_controller *controllers;
 208         struct agp_file_private *file_priv_list;
 209         bool used_by_controller;
 210         bool backend_acquired;
 211 };
 212
 213 #endif                          /* __KERNEL__ */
 214
 215 #endif                          /* _AGP_H */