xref: /netbsd/sys/arch/hpc/stand/libsa/diskio.h (revision 6550d01e)
1 /*	$NetBSD: diskio.h,v 1.3 2005/12/11 12:17:30 christos Exp $	*/
2 
3 /*-
4  * Copyright (c) 2000 Tomohide Saito.
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 REGENTS 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 REGENTS 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  */
29 
30 /* "fake" diskio.h */
31 
32 #define	DISK_IOCTL_GETINFO		1
33 #define	DISK_IOCTL_READ			2
34 #define	DISK_INFO_FLAG_MBR		0x00000001
35 #define	DISK_INFO_FLAG_CHS_UNCERTAIN	0x00000002
36 #define	DISK_INFO_FLAG_UNFORMATTED	0x00000004
37 #define	DISK_INFO_FLAG_PAGEABLE		0x00000008
38 
39 typedef struct {
40 	long pad1;
41 	DWORD di_bytes_per_sect;/* offset 4 */
42 	DWORD di_cylinders;	/* offset 8 */
43 	DWORD di_heads;		/* offset 12 */
44 	DWORD di_sectors;	/* offset 16 */
45 	DWORD di_flags;		/* offset 20 */
46 } DISK_INFO;			/* sizeof(DISK_INFO) = 24 */
47 
48 typedef struct _SG_REQ {
49 	DWORD sr_start;		/* offset 0 */
50 	DWORD sr_num_sec;	/* offset 4 */
51 	DWORD sr_num_sg;	/* offset 8 */
52 	DWORD sr_status;	/* offset 12 */
53 	DWORD (*sr_callback)(struct _SG_REQ *);	/* offset 16 */
54 	struct {		/* offset 20 */
55 		PUCHAR sb_buf;		/* offset 0 */
56 		DWORD sb_len;		/* offset 4 */
57 	} sr_sglist[1];			/* sizeof(sr_sglist[]) = 8 */
58 } SG_REQ;			/* sizeof(SG_REQ) = 28 */
59