1/* $NetBSD: agpio.h,v 1.11 2015/09/06 06:01:02 dholland Exp $ */
2
3/*-
4 * Copyright (c) 2000 Doug Rabson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: src/sys/sys/agpio.h,v 1.1 2000/06/09 16:04:30 dfr Exp $
29 */
30
31#ifndef _SYS_AGPIO_H_
32#define _SYS_AGPIO_H_
33
34#include <sys/ioccom.h>
35
36/*
37 * The AGP gatt uses 4k pages irrespective of the host page size.
38 */
39#define AGP_PAGE_SIZE 4096
40#define AGP_PAGE_SHIFT 12
41
42/*
43 * Macros to manipulate AGP mode words.
44 */
45#define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24)
46#define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13)
47#define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10)
48#define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9)
49#define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8)
50#define AGP_MODE_GET_4G(x) (((x) & 0x00000020U) >> 5)
51#define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4)
52#define AGP_MODE_GET_MODE_3(x) (((x) & 0x00000008U) >> 3)
53#define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U)
54#define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24))
55#define AGP_MODE_SET_ARQSZ(x,v) (((x) & ~0x0000e000U) | ((v) << 13))
56#define AGP_MODE_SET_CAL(x,v) (((x) & ~0x00001c00U) | ((v) << 10))
57#define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9))
58#define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8))
59#define AGP_MODE_SET_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5))
60#define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4))
61#define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3))
62#define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v))
63#define AGP_MODE_V2_RATE_1x 0x00000001
64#define AGP_MODE_V2_RATE_2x 0x00000002
65#define AGP_MODE_V2_RATE_4x 0x00000004
66#define AGP_MODE_V3_RATE_4x 0x00000001
67#define AGP_MODE_V3_RATE_8x 0x00000002
68#define AGP_MODE_V3_RATE_RSVD 0x00000004
69
70/* compat */
71#define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x
72#define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x
73#define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x
74
75#define AGPIOC_BASE 'A'
76#define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info)
77#define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1)
78#define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2)
79#define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup)
80#if 0
81#define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region)
82#define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region)
83#endif
84#define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate)
85#define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
86#define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind)
87#define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind)
88
89typedef struct _agp_version {
90 uint16_t major;
91 uint16_t minor;
92} agp_version;
93
94typedef struct _agp_info {
95 agp_version version; /* version of the driver */
96 uint32_t bridge_id; /* bridge vendor/device */
97 uint32_t agp_mode; /* mode info of bridge */
98 off_t aper_base; /* base of aperture */
99 size_t aper_size; /* size of aperture */
100 size_t pg_total; /* max pages (swap + system) */
101 size_t pg_system; /* max pages (system) */
102 size_t pg_used; /* current pages used */
103} agp_info;
104
105typedef struct _agp_setup {
106 uint32_t agp_mode; /* mode info of bridge */
107} agp_setup;
108
109#if 0
110/*
111 * The "prot" down below needs still a "sleep" flag somehow ...
112 */
113typedef struct _agp_segment {
114 off_t pg_start; /* starting page to populate */
115 size_t pg_count; /* number of pages */
116 int prot; /* prot flags for mmap */
117} agp_segment;
118
119typedef struct _agp_region {
120 pid_t pid; /* pid of process */
121 size_t seg_count; /* number of segments */
122 struct _agp_segment *seg_list;
123} agp_region;
124#endif
125
126typedef struct _agp_allocate {
127 int key; /* tag of allocation */
128 size_t pg_count; /* number of pages */
129 uint32_t type; /* 0 == normal, other devspec */
130 uint32_t physical; /* device specific (some devices
131 * need a phys address of the
132 * actual page behind the gatt
133 * table) */
134} agp_allocate;
135
136typedef struct _agp_bind {
137 int key; /* tag of allocation */
138 off_t pg_start; /* starting page to populate */
139} agp_bind;
140
141typedef struct _agp_unbind {
142 int key; /* tag of allocation */
143 uint32_t priority; /* priority for paging out */
144} agp_unbind;
145
146#endif /* !_SYS_AGPIO_H_ */
147