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
33struct 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
44struct 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 */
51struct 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
57struct agp_segment_priv {
58	off_t pg_start;
59	size_t pg_count;
60	pgprot_t prot;
61};
62
63struct 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
69struct 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
79struct agp_bind {
80	int key;		/* tag of allocation            */
81	off_t pg_start;		/* starting page to populate    */
82};
83
84struct agp_unbind {
85	int key;		/* tag of allocation            */
86	u32 priority;		/* priority for paging out      */
87};
88
89struct 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
97struct 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
112struct 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
119struct 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