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, 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, agp_setup*)
35#define AGPIOC_RESERVE    _IOW (AGPIOC_BASE, 4, agp_region*)
36#define AGPIOC_PROTECT    _IOW (AGPIOC_BASE, 5, agp_region*)
37#define AGPIOC_ALLOCATE   _IOWR(AGPIOC_BASE, 6, agp_allocate*)
38#define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
39#define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, agp_bind*)
40#define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, 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
56typedef struct _agp_version {
57	__u16 major;
58	__u16 minor;
59} agp_version;
60
61typedef struct _agp_info {
62	agp_version version;	/* version of the driver        */
63	__u32 bridge_id;	/* bridge vendor/device         */
64	__u32 agp_mode;		/* mode info of bridge          */
65	off_t 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
113#define AGPGART_MINOR 175
114
115#define AGP_UNLOCK()      	up(&(agp_fe.agp_mutex));
116#define AGP_LOCK()    		down(&(agp_fe.agp_mutex));
117#define AGP_LOCK_INIT() 	sema_init(&(agp_fe.agp_mutex), 1)
118
119#ifndef _AGP_BACKEND_H
120typedef struct _agp_version {
121	u16 major;
122	u16 minor;
123} agp_version;
124
125#endif
126
127typedef struct _agp_info {
128	agp_version version;	/* version of the driver        */
129	u32 bridge_id;		/* bridge vendor/device         */
130	u32 agp_mode;		/* mode info of bridge          */
131	off_t aper_base;	/* base of aperture             */
132	size_t aper_size;	/* size of aperture             */
133	size_t pg_total;	/* max pages (swap + system)    */
134	size_t pg_system;	/* max pages (system)           */
135	size_t pg_used;		/* current pages used           */
136} agp_info;
137
138typedef struct _agp_setup {
139	u32 agp_mode;		/* mode info of bridge          */
140} agp_setup;
141
142/*
143 * The "prot" down below needs still a "sleep" flag somehow ...
144 */
145typedef struct _agp_segment {
146	off_t pg_start;		/* starting page to populate    */
147	size_t pg_count;	/* number of pages              */
148	int prot;		/* prot flags for mmap          */
149} agp_segment;
150
151typedef struct _agp_segment_priv {
152	off_t pg_start;
153	size_t pg_count;
154	pgprot_t prot;
155} agp_segment_priv;
156
157typedef struct _agp_region {
158	pid_t pid;		/* pid of process               */
159	size_t seg_count;	/* number of segments           */
160	struct _agp_segment *seg_list;
161} agp_region;
162
163typedef struct _agp_allocate {
164	int key;		/* tag of allocation            */
165	size_t pg_count;	/* number of pages              */
166	u32 type;		/* 0 == normal, other devspec   */
167	u32 physical;           /* device specific (some devices
168				 * need a phys address of the
169				 * actual page behind the gatt
170				 * table)                        */
171} agp_allocate;
172
173typedef struct _agp_bind {
174	int key;		/* tag of allocation            */
175	off_t pg_start;		/* starting page to populate    */
176} agp_bind;
177
178typedef struct _agp_unbind {
179	int key;		/* tag of allocation            */
180	u32 priority;		/* priority for paging out      */
181} agp_unbind;
182
183typedef struct _agp_client {
184	struct _agp_client *next;
185	struct _agp_client *prev;
186	pid_t pid;
187	int num_segments;
188	agp_segment_priv **segments;
189} agp_client;
190
191typedef struct _agp_controller {
192	struct _agp_controller *next;
193	struct _agp_controller *prev;
194	pid_t pid;
195	int num_clients;
196	agp_memory *pool;
197	agp_client *clients;
198} agp_controller;
199
200#define AGP_FF_ALLOW_CLIENT		0
201#define AGP_FF_ALLOW_CONTROLLER 	1
202#define AGP_FF_IS_CLIENT		2
203#define AGP_FF_IS_CONTROLLER		3
204#define AGP_FF_IS_VALID 		4
205
206typedef struct _agp_file_private {
207	struct _agp_file_private *next;
208	struct _agp_file_private *prev;
209	pid_t my_pid;
210	long access_flags;	/* long req'd for set_bit --RR */
211} agp_file_private;
212
213struct agp_front_data {
214	struct semaphore agp_mutex;
215	agp_controller *current_controller;
216	agp_controller *controllers;
217	agp_file_private *file_priv_list;
218	u8 used_by_controller;
219	u8 backend_acquired;
220};
221
222#endif				/* __KERNEL__ */
223
224#endif				/* _AGP_H */
225