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 #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 */