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1 /*-
2  * Copyright (c) 2011 Advanced Computing Technologies LLC
3  * Written by: John H. Baldwin <jhb@FreeBSD.org>
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  *
27  * $FreeBSD$
28  */
29
30 #ifndef _EDD_H_
31 #define _EDD_H_
32
33 /* Supported interfaces for "Check Extensions Present". */
34 #define EDD_INTERFACE_FIXED_DISK        0x01
35 #define EDD_INTERFACE_EJECT             0x02
36 #define EDD_INTERFACE_EDD               0x04
37
38 struct edd_packet {
39         uint16_t        len;
40         uint16_t        count;
41         uint16_t        off;
42         uint16_t        seg;
43         uint64_t        lba;
44 };
45
46 struct edd_packet_v3 {
47         uint16_t        len;
48         uint16_t        count;
49         uint16_t        off;
50         uint16_t        seg;
51         uint64_t        lba;
52         uint64_t        phys_addr;
53 };
54
55 struct edd_params {
56         uint16_t        len;
57         uint16_t        flags;
58         uint32_t        cylinders;
59         uint32_t        heads;
60         uint32_t        sectors_per_track;
61         uint64_t        sectors;
62         uint16_t        sector_size;
63         uint16_t        edd_params_seg;
64         uint16_t        edd_params_off;
65 } __packed;
66
67 struct edd_device_path_v3 {
68         uint16_t        key;
69         uint8_t         len;
70         uint8_t         reserved[3];
71         char            host_bus[4];
72         char            interface[8];
73         uint64_t        interface_path;
74         uint64_t        device_path;
75         uint8_t         reserved2[1];
76         uint8_t         checksum;
77 } __packed;
78
79 struct edd_params_v3 {
80         struct edd_params params;
81         struct edd_device_path_v3 device_path;
82 } __packed;
83
84 struct edd_device_path_v4 {
85         uint16_t        key;
86         uint8_t         len;
87         uint8_t         reserved[3];
88         char            host_bus[4];
89         char            interface[8];
90         uint64_t        interface_path;
91         uint64_t        device_path[2];
92         uint8_t         reserved2[1];
93         uint8_t         checksum;
94 } __packed;
95
96 struct edd_params_v4 {
97         struct edd_params params;
98         struct edd_device_path_v4 device_path;
99 } __packed;
100
101 #define EDD_FLAGS_DMA_BOUNDARY_HANDLING         0x0001
102 #define EDD_FLAGS_REMOVABLE_MEDIA               0x0002
103 #define EDD_FLAGS_WRITE_VERIFY                  0x0004
104 #define EDD_FLAGS_MEDIA_CHANGE_NOTIFICATION     0x0008
105 #define EDD_FLAGS_LOCKABLE_MEDIA                0x0010
106 #define EDD_FLAGS_NO_MEDIA_PRESENT              0x0020
107
108 #define EDD_DEVICE_PATH_KEY     0xbedd
109
110 #endif /* !_EDD_H_ */