1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright (c) 1996-2001 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#ifndef	_SYS_DADA_IMPL_COMMANDS_H
28#define	_SYS_DADA_IMPL_COMMANDS_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36/*
37 * Implementation dependent view of a ATA command descriptor block
38 */
39
40struct	dcd_cmd	{
41	uchar_t	cmd;				/* The ATA command */
42	uchar_t	address_mode;			/* Mode of addressing */
43	uchar_t	direction;			/* Not SCSI to be indicated */
44	uchar_t  features;			/* Any features to be enabled */
45	uint_t	size;				/* size in bytes */
46	uint_t	version;			/* version number */
47	union {
48		uint_t	lba_num;		/* LBA number if LBA */
49						/* mode is used */
50		struct	chs {
51			ushort_t	cylinder;	/* Cylinder Number */
52			uchar_t		head;		/* Head number */
53			uchar_t		sector;		/* Sector Number */
54		} chs_address;
55	} sector_num;
56};
57
58#define	GETATACMD(cdb)	((cdb)->cmd)
59
60/*
61 * Direct Access Device Capacity Structure
62 */
63struct dcd_capacity {
64	uchar_t		heads;
65	uchar_t		sectors;
66	ushort_t	ncyls;
67	uint_t		capacity;
68	uint_t		lbasize;
69};
70
71
72/* The following are the defines for the commands. */
73
74#define	IDENTIFY		0xEC		/* Identify Device */
75#define	IDENTIFY_DMA		0xEE		/* Identify DMA	   */
76#define	ATA_RECALIBRATE		0x10		/* Recalibrate */
77#define	ATA_READ		0x20		/* With retries */
78#define	ATA_WRITE		0x30		/* With retries */
79#define	ATA_SET_MULTIPLE 	0xC6		/* Set Multiple */
80#define	ATA_READ_MULTIPLE	0xC4		/* Read Multiple */
81#define	ATA_WRITE_MULTIPLE	0xC5		/* Write Multiple */
82#define	ATA_READ_DMA		0xC8		/* Read DMA with retries */
83#define	ATA_WRITE_DMA		0xCA		/* Write DMA with reties */
84#define	ATA_SET_FEATURES	0xEF		/* Set features */
85#define	ATA_IDLE_IMMEDIATE	0xE1		/* Idle immediate */
86#define	ATA_STANDBY_IMMEDIATE	0xE0		/* Standby Immediate */
87#define	ATA_FLUSH_CACHE		0xE7		/* Flush Cache */
88#define	ATA_DOWNLOAD_MICROCODE	0x92		/* Download microcode */
89
90/* The following are the defines for the direction. */
91
92#define	DATA_READ		0x01		/* READ from disk */
93#define	DATA_WRITE		0x02		/* WRITE to disk */
94#define	NO_DATA_XFER		0x00		/* No data xfer involved */
95
96/* The following are the defines for the address mode */
97
98#define	ADD_LBA_MODE		0x01		/* LBA Mode of addressing */
99#define	ADD_CHS_MODE		0x02		/* Cylinder Head Sector mode */
100
101/* The following are the usefull subcommands for set features command */
102#define	ATA_FEATURE_SET_MODE 	0x03		/* This sets the mode */
103
104/* The following are the masks which are used for enabling DMA or PIO */
105#define	ENABLE_PIO_FEATURE	0x08		/* PIO with flow control */
106#define	ENABLE_DMA_FEATURE 	0x20		/* Enable DMA */
107#define	ENABLE_ULTRA_FEATURE 	0x40		/* Enable ULTRA DMA */
108
109#ifdef	__cplusplus
110}
111#endif
112
113#endif /* _SYS_DADA_IMPL_COMMANDS_H */
114