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
27 #ifndef _AGP_H
28 #define _AGP_H 1
29
30 #include <linux/agp_backend.h>
31
32 #define AGPIOC_BASE 'A'
33 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, struct agp_info*)
34 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1)
35 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2)
36 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, struct agp_setup*)
37 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, struct agp_region*)
38 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, struct agp_region*)
39 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, struct agp_allocate*)
40 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
41 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, struct agp_bind*)
42 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, struct agp_unbind*)
43
44 #define AGP_DEVICE "/dev/agpgart"
45
46 #ifndef TRUE
47 #define TRUE 1
48 #endif
49
50 #ifndef FALSE
51 #define FALSE 0
52 #endif
53
54 #ifndef __KERNEL__
55 #include <linux/types.h>
56 #include <asm/types.h>
57
58 struct agp_version {
59 __u16 major;
60 __u16 minor;
61 };
62
63 typedef struct _agp_info {
64 struct agp_version version; /* version of the driver */
65 __u32 bridge_id; /* bridge vendor/device */
66 __u32 agp_mode; /* mode info of bridge */
67 unsigned long aper_base;/* base of aperture */
68 size_t aper_size; /* size of aperture */
69 size_t pg_total; /* max pages (swap + system) */
70 size_t pg_system; /* max pages (system) */
71 size_t pg_used; /* current pages used */
72 } agp_info;
73
74 typedef struct _agp_setup {
75 __u32 agp_mode; /* mode info of bridge */
76 } agp_setup;
77
78 /*
79 * The "prot" down below needs still a "sleep" flag somehow ...
80 */
81 typedef struct _agp_segment {
82 off_t pg_start; /* starting page to populate */
83 size_t pg_count; /* number of pages */
84 int prot; /* prot flags for mmap */
85 } agp_segment;
86
87 typedef struct _agp_region {
88 pid_t pid; /* pid of process */
89 size_t seg_count; /* number of segments */
90 struct _agp_segment *seg_list;
91 } agp_region;
92
93 typedef struct _agp_allocate {
94 int key; /* tag of allocation */
95 size_t pg_count; /* number of pages */
96 __u32 type; /* 0 == normal, other devspec */
97 __u32 physical; /* device specific (some devices
98 * need a phys address of the
99 * actual page behind the gatt
100 * table) */
101 } agp_allocate;
102
103 typedef struct _agp_bind {
104 int key; /* tag of allocation */
105 off_t pg_start; /* starting page to populate */
106 } agp_bind;
107
108 typedef struct _agp_unbind {
109 int key; /* tag of allocation */
110 __u32 priority; /* priority for paging out */
111 } agp_unbind;
112
113 #else /* __KERNEL__ */
114 #include <linux/mutex.h>
115
116 #define AGPGART_MINOR 175
117
118 struct agp_info {
119 struct agp_version version; /* version of the driver */
120 u32 bridge_id; /* bridge vendor/device */
121 u32 agp_mode; /* mode info of bridge */
122 unsigned long aper_base;/* base of aperture */
123 size_t aper_size; /* size of aperture */
124 size_t pg_total; /* max pages (swap + system) */
125 size_t pg_system; /* max pages (system) */
126 size_t pg_used; /* current pages used */
127 };
128
129 struct agp_setup {
130 u32 agp_mode; /* mode info of bridge */
131 };
132
133 /*
134 * The "prot" down below needs still a "sleep" flag somehow ...
135 */
136 struct agp_segment {
137 off_t pg_start; /* starting page to populate */
138 size_t pg_count; /* number of pages */
139 int prot; /* prot flags for mmap */
140 };
141
142 struct agp_segment_priv {
143 off_t pg_start;
144 size_t pg_count;
145 pgprot_t prot;
146 };
147
148 struct agp_region {
149 pid_t pid; /* pid of process */
150 size_t seg_count; /* number of segments */
151 struct agp_segment *seg_list;
152 };
153
154 struct agp_allocate {
155 int key; /* tag of allocation */
156 size_t pg_count; /* number of pages */
157 u32 type; /* 0 == normal, other devspec */
158 u32 physical; /* device specific (some devices
159 * need a phys address of the
160 * actual page behind the gatt
161 * table) */
162 };
163
164 struct agp_bind {
165 int key; /* tag of allocation */
166 off_t pg_start; /* starting page to populate */
167 };
168
169 struct agp_unbind {
170 int key; /* tag of allocation */
171 u32 priority; /* priority for paging out */
172 };
173
174 struct agp_client {
175 struct agp_client *next;
176 struct agp_client *prev;
177 pid_t pid;
178 int num_segments;
179 struct agp_segment_priv **segments;
180 };
181
182 struct agp_controller {
183 struct agp_controller *next;
184 struct agp_controller *prev;
185 pid_t pid;
186 int num_clients;
187 struct agp_memory *pool;
188 struct agp_client *clients;
189 };
190
191 #define AGP_FF_ALLOW_CLIENT 0
192 #define AGP_FF_ALLOW_CONTROLLER 1
193 #define AGP_FF_IS_CLIENT 2
194 #define AGP_FF_IS_CONTROLLER 3
195 #define AGP_FF_IS_VALID 4
196
197 struct agp_file_private {
198 struct agp_file_private *next;
199 struct agp_file_private *prev;
200 pid_t my_pid;
201 long access_flags; /* long req'd for set_bit --RR */
202 };
203
204 struct agp_front_data {
205 struct mutex agp_mutex;
206 struct agp_controller *current_controller;
207 struct agp_controller *controllers;
208 struct agp_file_private *file_priv_list;
209 u8 used_by_controller;
210 u8 backend_acquired;
211 };
212
213 #endif /* __KERNEL__ */
214
215 #endif /* _AGP_H */
216
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