1 /*
2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /*
7 * Copyright (c) 2000 Doug Rabson
8 * Copyright (c) 2009, Intel Corporation.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34 #ifndef _SYS_AGPGART_H
35 #define _SYS_AGPGART_H
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 #define AGP_NORMAL 0 /* mapped to user land, no cache */
42
43 typedef struct _agp_version {
44 uint16_t agpv_major;
45 uint16_t agpv_minor;
46 } agp_version_t;
47
48
49 typedef struct _agp_info {
50 agp_version_t agpi_version;
51 uint32_t agpi_devid; /* bridge vendor + device */
52 uint32_t agpi_mode; /* mode of brdige */
53 ulong_t agpi_aperbase; /* base of aperture */
54 size_t agpi_apersize; /* aperture range size */
55 uint32_t agpi_pgtotal; /* max number of pages in aperture */
56 uint32_t agpi_pgsystem; /* same as pg_total */
57 uint32_t agpi_pgused; /* NUMBER of currently used pages */
58 } agp_info_t;
59
60 typedef struct _agp_setup {
61 uint32_t agps_mode;
62 } agp_setup_t;
63
64 typedef struct _agp_allocate {
65 int32_t agpa_key;
66 uint32_t agpa_pgcount;
67 uint32_t agpa_type;
68 uint32_t agpa_physical; /* for i810 only, private */
69 } agp_allocate_t;
70
71 typedef struct _agp_bind_pages {
72 uint32_t agpb_pgstart;
73 pfn_t *agpb_pages;
74 unsigned long agpb_pgcount;
75 } agp_bind_pages_t;
76
77 typedef struct _agp_unbind_pages {
78 uint32_t agpb_pgstart;
79 unsigned long agpb_pgcount;
80 uint32_t agpb_type;
81 } agp_unbind_pages_t;
82
83 typedef struct _agp_bind {
84 int32_t agpb_key;
85 uint32_t agpb_pgstart;
86 } agp_bind_t;
87
88 typedef struct _agp_unbind {
89 int32_t agpu_key;
90 uint32_t agpu_pri; /* no use in solaris */
91 } agp_unbind_t;
92
93 #define AGPIOC_BASE 'G'
94 #define AGPIOC_INFO _IOR(AGPIOC_BASE, 0, 100)
95 #define AGPIOC_ACQUIRE _IO(AGPIOC_BASE, 1)
96 #define AGPIOC_RELEASE _IO(AGPIOC_BASE, 2)
97 #define AGPIOC_SETUP _IOW(AGPIOC_BASE, 3, agp_setup_t)
98 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 4, agp_allocate_t)
99 #define AGPIOC_DEALLOCATE _IOW(AGPIOC_BASE, 5, int)
100 #define AGPIOC_BIND _IOW(AGPIOC_BASE, 6, agp_bind_t)
101 #define AGPIOC_UNBIND _IOW(AGPIOC_BASE, 7, agp_unbind_t)
102 #define AGPIOC_IOREMAP _IO(AGPIOC_BASE, 8)
103 #define AGPIOC_IOREMAP_FREE _IO(AGPIOC_BASE, 9)
104 #define AGPIOC_READ _IO(AGPIOC_BASE, 10)
105 #define AGPIOC_WRITE _IO(AGPIOC_BASE, 11)
106 #define AGPIOC_FLUSHCHIPSET _IO(AGPIOC_BASE, 12)
107 #define AGPIOC_PAGES_BIND _IOW(AGPIOC_BASE, 13, agp_bind_pages_t)
108 #define AGPIOC_PAGES_UNBIND _IOW(AGPIOC_BASE, 14, agp_unbind_pages_t)
109 #define AGPIOC_PAGES_REBIND _IO(AGPIOC_BASE, 15)
110
111 /* AGP status register bits definition */
112 #define AGPSTAT_RQ_MASK 0xff000000 /* target only */
113 #define AGPSTAT_SBA (0x1 << 9) /* always 1 for 3.0 */
114 #define AGPSTAT_OVER4G (0x1 << 5)
115 #define AGPSTAT_FW (0x1 << 4)
116 #define AGPSTAT_RATE_MASK 0x7
117 /* rate for 2.0 mode */
118 #define AGP2_RATE_1X 0x1
119 #define AGP2_RATE_2X 0x2
120 #define AGP2_RATE_4X 0x4
121 /* AGP 3.0 only bits */
122 #define AGPSTAT_ARQSZ_MASK (0x7 << 13) /* target only */
123 #define AGPSTAT_CAL_MASK (0x7 << 10)
124 #define AGPSTAT_GART64B (0x1 << 7) /* target only */
125 #define AGPSTAT_MODE3 (0x1 << 3)
126 /* Rate for 3.0 mode */
127 #define AGP3_RATE_4X 0x1
128 #define AGP3_RATE_8X 0x2
129
130 /* AGP command register bits definition */
131 #define AGPCMD_RQ_MASK 0xff000000 /* master only */
132 #define AGPCMD_SBAEN (0x1 << 9) /* must be 1 for 3.0 */
133 #define AGPCMD_AGPEN (0x1 << 8)
134 #define AGPCMD_OVER4GEN (0x1 << 5)
135 #define AGPCMD_FWEN (0x1 << 4)
136 #define AGPCMD_RATE_MASK 0x7
137 /* AGP 3.0 only bits */
138 #define AGP3_CMD_ARQSZ_MASK (0x7 << 13) /* master only */
139 #define AGP3_CMD_CAL_MASK (0x7 << 10) /* target only */
140 #define AGP3_CMD_GART64BEN (0x1 << 7) /* target only */
141
142 #define AGP_DEVICE "/dev/agpgart"
143
144 #ifdef __cplusplus
145 }
146 #endif
147
148 #endif /* _SYS_AGPGART_H */