1/*	$NetBSD$	*/
2
3/*
4 * Copyright (c) 1995 Waldi Ravens.
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 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *        This product includes software developed by Waldi Ravens.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef DISKIO_H
34#define DISKIO_H
35
36#define MINOR(bus, target, lun)	(lun)
37#define MAJOR(bus, target, lun)	(((bus) << 3) + (target))
38
39#define LUN(major, minor)	(minor)
40#define TARGET(major, minor)	((major) & 0x0007)
41#define BUS(major, minor)	(((major) >> 3) & 0x1FFF)
42#define BIOSDEV(major, minor)	(((minor) == 0) ? ((major) + 2) : 0)
43
44typedef enum {
45	ACSI = 0,
46	SCSI = 1,
47	IDE  = 2
48} bus_t;
49
50typedef struct {
51	u_int		major;		/* XHDI major number		*/
52	u_int		minor;		/* XHDI minor number		*/
53	char *		sname;		/* short name (s00)		*/
54	char *		fname;		/* full name (scsi target 0 lun 0)*/
55	char *		product;	/* product name			*/
56	u_long		bsize;		/* block size in bytes		*/
57	u_long		msize;		/* medium size in blocks	*/
58	void 		*xtra_info;	/* application specific info	*/
59} disk_t;
60
61/*
62 * diskio.c
63 */
64EXTERN disk_t *	disk_open  PROTO((char *));
65EXTERN void	disk_close PROTO((disk_t *));
66EXTERN void *	disk_read  PROTO((disk_t *, u_int, u_int));
67EXTERN int	disk_write PROTO((disk_t *, u_int, u_int, void *));
68
69/*
70 *	biosrw.s
71 */
72EXTERN int	bios_read   PROTO((void *, u_int, u_int, u_int));
73EXTERN int	bios_write  PROTO((void *, u_int, u_int, u_int));
74EXTERN void	bios_critic PROTO((void));
75#endif	/* DISKIO_H */
76