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 */