linux/include/linux/agpgart.h
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   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
  56struct agp_version {
  57        __u16 major;
  58        __u16 minor;
  59};
  60
  61typedef struct _agp_info {
  62        struct agp_version version;     /* version of the driver        */
  63        __u32 bridge_id;        /* bridge vendor/device         */
  64        __u32 agp_mode;         /* mode info of bridge          */
  65        unsigned long 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
  72typedef 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 */
  79typedef struct _agp_segment {
  80        __kernel_off_t pg_start;        /* starting page to populate    */
  81        __kernel_size_t pg_count;       /* number of pages              */
  82        int prot;                       /* prot flags for mmap          */
  83} agp_segment;
  84
  85typedef struct _agp_region {
  86        __kernel_pid_t pid;             /* pid of process       */
  87        __kernel_size_t seg_count;      /* number of segments   */
  88        struct _agp_segment *seg_list;
  89} agp_region;
  90
  91typedef struct _agp_allocate {
  92        int key;                /* tag of allocation            */
  93        __kernel_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
 101typedef struct _agp_bind {
 102        int key;                /* tag of allocation            */
 103        __kernel_off_t pg_start;/* starting page to populate    */
 104} agp_bind;
 105
 106typedef struct _agp_unbind {
 107        int key;                /* tag of allocation            */
 108        __u32 priority;         /* priority for paging out      */
 109} agp_unbind;
 110
 111#else                           /* __KERNEL__ */
 112#include <linux/mutex.h>
 113#include <linux/agp_backend.h>
 114
 115#define AGPGART_MINOR 175
 116
 117struct 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        unsigned long 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
 128struct 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 */
 135struct 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
 141struct agp_segment_priv {
 142        off_t pg_start;
 143        size_t pg_count;
 144        pgprot_t prot;
 145};
 146
 147struct 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
 153struct 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
 163struct agp_bind {
 164        int key;                /* tag of allocation            */
 165        off_t pg_start;         /* starting page to populate    */
 166};
 167
 168struct agp_unbind {
 169        int key;                /* tag of allocation            */
 170        u32 priority;           /* priority for paging out      */
 171};
 172
 173struct 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
 181struct 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
 196struct agp_file_private {
 197        struct agp_file_private *next;
 198        struct agp_file_private *prev;
 199        pid_t my_pid;
 200        unsigned long access_flags;     /* long req'd for set_bit --RR */
 201};
 202
 203struct agp_front_data {
 204        struct mutex agp_mutex;
 205        struct agp_controller *current_controller;
 206        struct agp_controller *controllers;
 207        struct agp_file_private *file_priv_list;
 208        bool used_by_controller;
 209        bool backend_acquired;
 210};
 211
 212#endif                          /* __KERNEL__ */
 213
 214#endif                          /* _AGP_H */
 215
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