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TOMOYO Linux Cross Reference
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 
 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 */
131 

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