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#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
  35struct 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
  46struct 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 */
  53struct 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
  59struct agp_segment_priv {
  60        off_t pg_start;
  61        size_t pg_count;
  62        pgprot_t prot;
  63};
  64
  65struct 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
  71struct 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
  81struct agp_bind {
  82        int key;                /* tag of allocation            */
  83        off_t pg_start;         /* starting page to populate    */
  84};
  85
  86struct agp_unbind {
  87        int key;                /* tag of allocation            */
  88        u32 priority;           /* priority for paging out      */
  89};
  90
  91struct 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
  99struct 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
 114struct 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
 121struct 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 */
 131
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