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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.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
30 #include <linux/agp_backend.h>
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*)
44 #define AGP_DEVICE "/dev/agpgart"
55 #include <linux/types.h>
56 #include <asm/types.h>
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 */
74 typedef struct _agp_setup
{
75 __u32 agp_mode
; /* mode info of bridge */
79 * The "prot" down below needs still a "sleep" flag somehow ...
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 */
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
;
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
103 typedef struct _agp_bind
{
104 int key
; /* tag of allocation */
105 off_t pg_start
; /* starting page to populate */
108 typedef struct _agp_unbind
{
109 int key
; /* tag of allocation */
110 __u32 priority
; /* priority for paging out */
113 #else /* __KERNEL__ */
115 #define AGPGART_MINOR 175
118 struct agp_version version
; /* version of the driver */
119 u32 bridge_id
; /* bridge vendor/device */
120 u32 agp_mode
; /* mode info of bridge */
121 unsigned long aper_base
;/* base of aperture */
122 size_t aper_size
; /* size of aperture */
123 size_t pg_total
; /* max pages (swap + system) */
124 size_t pg_system
; /* max pages (system) */
125 size_t pg_used
; /* current pages used */
129 u32 agp_mode
; /* mode info of bridge */
133 * The "prot" down below needs still a "sleep" flag somehow ...
136 off_t pg_start
; /* starting page to populate */
137 size_t pg_count
; /* number of pages */
138 int prot
; /* prot flags for mmap */
141 struct agp_segment_priv
{
148 pid_t pid
; /* pid of process */
149 size_t seg_count
; /* number of segments */
150 struct agp_segment
*seg_list
;
153 struct agp_allocate
{
154 int key
; /* tag of allocation */
155 size_t pg_count
; /* number of pages */
156 u32 type
; /* 0 == normal, other devspec */
157 u32 physical
; /* device specific (some devices
158 * need a phys address of the
159 * actual page behind the gatt
164 int key
; /* tag of allocation */
165 off_t pg_start
; /* starting page to populate */
169 int key
; /* tag of allocation */
170 u32 priority
; /* priority for paging out */
174 struct agp_client
*next
;
175 struct agp_client
*prev
;
178 struct agp_segment_priv
**segments
;
181 struct agp_controller
{
182 struct agp_controller
*next
;
183 struct agp_controller
*prev
;
186 struct agp_memory
*pool
;
187 struct agp_client
*clients
;
190 #define AGP_FF_ALLOW_CLIENT 0
191 #define AGP_FF_ALLOW_CONTROLLER 1
192 #define AGP_FF_IS_CLIENT 2
193 #define AGP_FF_IS_CONTROLLER 3
194 #define AGP_FF_IS_VALID 4
196 struct agp_file_private
{
197 struct agp_file_private
*next
;
198 struct agp_file_private
*prev
;
200 long access_flags
; /* long req'd for set_bit --RR */
203 struct agp_front_data
{
204 struct semaphore agp_mutex
;
205 struct agp_controller
*current_controller
;
206 struct agp_controller
*controllers
;
207 struct agp_file_private
*file_priv_list
;
208 u8 used_by_controller
;
212 #endif /* __KERNEL__ */