FreeBSD/Linux Kernel Cross Reference
sys/sys/agpio.h
1 /*-
2 * Copyright (c) 2000 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/sys/agpio.h,v 1.4 2003/10/23 18:08:56 jhb Exp $
27 */
28
29 #ifndef _SYS_AGPIO_H_
30 #define _SYS_AGPIO_H_
31
32 /*
33 * The AGP gatt uses 4k pages irrespective of the host page size.
34 */
35 #define AGP_PAGE_SIZE 4096
36 #define AGP_PAGE_SHIFT 12
37
38 /*
39 * Macros to manipulate AGP mode words.
40 *
41 * SBA = Sideband Address Port
42 * FW = Fast Writes
43 */
44 #define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24)
45 #define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13)
46 #define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10)
47 #define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9)
48 #define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8)
49 #define AGP_MODE_GET_GART_64(x) (((x) & 0x00000080U) >> 7)
50 #define AGP_MODE_GET_OVER_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_GART_64(x,v) (((x) & ~0x00000080U) | ((v) << 7))
60 #define AGP_MODE_SET_OVER_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5))
61 #define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4))
62 #define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3))
63 #define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v))
64 #define AGP_MODE_V2_RATE_1x 0x00000001
65 #define AGP_MODE_V2_RATE_2x 0x00000002
66 #define AGP_MODE_V2_RATE_4x 0x00000004
67 #define AGP_MODE_V3_RATE_4x 0x00000001
68 #define AGP_MODE_V3_RATE_8x 0x00000002
69 #define AGP_MODE_V3_RATE_RSVD 0x00000004
70
71 /* XXX: Compat */
72 #define AGP_MODE_GET_4G(x) AGP_MODE_GET_OVER_4G(x)
73 #define AGP_MODE_SET_4G(x) AGP_MODE_SET_OVER_4G(x)
74 #define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x
75 #define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x
76 #define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x
77
78 #define AGPIOC_BASE 'A'
79 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info)
80 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1)
81 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2)
82 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup)
83 #if 0
84 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region)
85 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region)
86 #endif
87 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate)
88 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
89 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind)
90 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind)
91
92 typedef struct _agp_version {
93 u_int16_t major;
94 u_int16_t minor;
95 } agp_version;
96
97 typedef struct _agp_info {
98 agp_version version; /* version of the driver */
99 u_int32_t bridge_id; /* bridge vendor/device */
100 u_int32_t agp_mode; /* mode info of bridge */
101 off_t aper_base; /* base of aperture */
102 size_t aper_size; /* size of aperture */
103 size_t pg_total; /* max pages (swap + system) */
104 size_t pg_system; /* max pages (system) */
105 size_t pg_used; /* current pages used */
106 } agp_info;
107
108 typedef struct _agp_setup {
109 u_int32_t agp_mode; /* mode info of bridge */
110 } agp_setup;
111
112 #if 0
113 /*
114 * The "prot" down below needs still a "sleep" flag somehow ...
115 */
116 typedef struct _agp_segment {
117 off_t pg_start; /* starting page to populate */
118 size_t pg_count; /* number of pages */
119 int prot; /* prot flags for mmap */
120 } agp_segment;
121
122 typedef struct _agp_region {
123 pid_t pid; /* pid of process */
124 size_t seg_count; /* number of segments */
125 struct _agp_segment *seg_list;
126 } agp_region;
127 #endif
128
129 typedef struct _agp_allocate {
130 int key; /* tag of allocation */
131 size_t pg_count; /* number of pages */
132 u_int32_t type; /* 0 == normal, other devspec */
133 u_int32_t physical; /* device specific (some devices
134 * need a phys address of the
135 * actual page behind the gatt
136 * table) */
137 } agp_allocate;
138
139 typedef struct _agp_bind {
140 int key; /* tag of allocation */
141 off_t pg_start; /* starting page to populate */
142 } agp_bind;
143
144 typedef struct _agp_unbind {
145 int key; /* tag of allocation */
146 u_int32_t priority; /* priority for paging out */
147 } agp_unbind;
148
149 #endif /* !_SYS_AGPIO_H_ */
150
|