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 struct agp_info {
34 struct agp_version version; /* version of the driver */
35 u32 bridge_id; /* bridge vendor/device */
36 u32 agp_mode; /* mode info of bridge */
37 unsigned long aper_base;/* base of aperture */
38 size_t aper_size; /* size of aperture */
39 size_t pg_total; /* max pages (swap + system) */
40 size_t pg_system; /* max pages (system) */
41 size_t pg_used; /* current pages used */
42 };
43
44 struct agp_setup {
45 u32 agp_mode; /* mode info of bridge */
46 };
47
48 /*
49 * The "prot" down below needs still a "sleep" flag somehow ...
50 */
51 struct agp_segment {
52 off_t pg_start; /* starting page to populate */
53 size_t pg_count; /* number of pages */
54 int prot; /* prot flags for mmap */
55 };
56
57 struct agp_segment_priv {
58 off_t pg_start;
59 size_t pg_count;
60 pgprot_t prot;
61 };
62
63 struct agp_region {
64 pid_t pid; /* pid of process */
65 size_t seg_count; /* number of segments */
66 struct agp_segment *seg_list;
67 };
68
69 struct agp_allocate {
70 int key; /* tag of allocation */
71 size_t pg_count; /* number of pages */
72 u32 type; /* 0 == normal, other devspec */
73 u32 physical; /* device specific (some devices
74 * need a phys address of the
75 * actual page behind the gatt
76 * table) */
77 };
78
79 struct agp_bind {
80 int key; /* tag of allocation */
81 off_t pg_start; /* starting page to populate */
82 };
83
84 struct agp_unbind {
85 int key; /* tag of allocation */
86 u32 priority; /* priority for paging out */
87 };
88
89 struct agp_client {
90 struct agp_client *next;
91 struct agp_client *prev;
92 pid_t pid;
93 int num_segments;
94 struct agp_segment_priv **segments;
95 };
96
97 struct agp_controller {
98 struct agp_controller *next;
99 struct agp_controller *prev;
100 pid_t pid;
101 int num_clients;
102 struct agp_memory *pool;
103 struct agp_client *clients;
104 };
105
106 #define AGP_FF_ALLOW_CLIENT 0
107 #define AGP_FF_ALLOW_CONTROLLER 1
108 #define AGP_FF_IS_CLIENT 2
109 #define AGP_FF_IS_CONTROLLER 3
110 #define AGP_FF_IS_VALID 4
111
112 struct agp_file_private {
113 struct agp_file_private *next;
114 struct agp_file_private *prev;
115 pid_t my_pid;
116 unsigned long access_flags; /* long req'd for set_bit --RR */
117 };
118
119 struct agp_front_data {
120 struct mutex agp_mutex;
121 struct agp_controller *current_controller;
122 struct agp_controller *controllers;
123 struct agp_file_private *file_priv_list;
124 bool used_by_controller;
125 bool backend_acquired;
126 };
127
128 #endif /* _AGP_H */
129
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