FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/ata-disk.h
1 /*-
2 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
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 * without modification, immediately at the beginning of the file.
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 ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 /* structure describing an ATA disk */
30 struct ad_softc {
31 u_int64_t total_secs; /* total # of sectors (LBA) */
32 u_int8_t heads;
33 u_int8_t sectors;
34 u_int32_t transfersize; /* size of each transfer */
35 int num_tags; /* number of tags supported */
36 int flags; /* drive flags */
37 #define AD_F_LABELLING 0x0001
38 #define AD_F_CHS_USED 0x0002
39 #define AD_F_32B_ENABLED 0x0004
40 #define AD_F_TAG_ENABLED 0x0008
41 #define AD_F_RAID_SUBDISK 0x0010
42
43 struct disk *disk; /* disklabel/slice stuff */
44 };
45
46 extern devclass_t ad_devclass;
47
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