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
33#define AGPGART_MINOR 175
34
35struct agp_info {
36	struct agp_version version;	/* version of the driver        */
37	u32 bridge_id;		/* bridge vendor/device         */
38	u32 agp_mode;		/* mode info of bridge          */
39	unsigned long aper_base;/* base of aperture             */
40	size_t aper_size;	/* size of aperture             */
41	size_t pg_total;	/* max pages (swap + system)    */
42	size_t pg_system;	/* max pages (system)           */
43	size_t pg_used;		/* current pages used           */
44};
45
46struct agp_setup {
47	u32 agp_mode;		/* mode info of bridge          */
48};
49
50/*
51 * The "prot" down below needs still a "sleep" flag somehow ...
52 */
53struct agp_segment {
54	off_t pg_start;		/* starting page to populate    */
55	size_t pg_count;	/* number of pages              */
56	int prot;		/* prot flags for mmap          */
57};
58
59struct agp_segment_priv {
60	off_t pg_start;
61	size_t pg_count;
62	pgprot_t prot;
63};
64
65struct agp_region {
66	pid_t pid;		/* pid of process               */
67	size_t seg_count;	/* number of segments           */
68	struct agp_segment *seg_list;
69};
70
71struct agp_allocate {
72	int key;		/* tag of allocation            */
73	size_t pg_count;	/* number of pages              */
74	u32 type;		/* 0 == normal, other devspec   */
75	u32 physical;           /* device specific (some devices
76				 * need a phys address of the
77				 * actual page behind the gatt
78				 * table)                        */
79};
80
81struct agp_bind {
82	int key;		/* tag of allocation            */
83	off_t pg_start;		/* starting page to populate    */
84};
85
86struct agp_unbind {
87	int key;		/* tag of allocation            */
88	u32 priority;		/* priority for paging out      */
89};
90
91struct agp_client {
92	struct agp_client *next;
93	struct agp_client *prev;
94	pid_t pid;
95	int num_segments;
96	struct agp_segment_priv **segments;
97};
98
99struct agp_controller {
100	struct agp_controller *next;
101	struct agp_controller *prev;
102	pid_t pid;
103	int num_clients;
104	struct agp_memory *pool;
105	struct agp_client *clients;
106};
107
108#define AGP_FF_ALLOW_CLIENT		0
109#define AGP_FF_ALLOW_CONTROLLER 	1
110#define AGP_FF_IS_CLIENT		2
111#define AGP_FF_IS_CONTROLLER		3
112#define AGP_FF_IS_VALID 		4
113
114struct agp_file_private {
115	struct agp_file_private *next;
116	struct agp_file_private *prev;
117	pid_t my_pid;
118	unsigned long access_flags;	/* long req'd for set_bit --RR */
119};
120
121struct agp_front_data {
122	struct mutex agp_mutex;
123	struct agp_controller *current_controller;
124	struct agp_controller *controllers;
125	struct agp_file_private *file_priv_list;
126	bool used_by_controller;
127	bool backend_acquired;
128};
129
130#endif				/* _AGP_H */
131