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