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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef	_SYS_BIOSDISK_H
27#define	_SYS_BIOSDISK_H
28
29#include <sys/types.h>
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35typedef union device_path {
36	struct {			/* ATA or ATAPI or SATA */
37		unsigned char 	chan;	/* 0 or 1 */
38		unsigned char 	lun;	/* for ATAPI only */
39	} ata;
40	struct {
41		unsigned short	target;
42		uint32_t	lun_lo;
43		uint32_t	lun_hi;
44	} scsi;
45	struct {
46		uint64_t	usb_serial_id;
47	} usb;
48	struct {
49		uint64_t	eui;
50	} s1394;
51	struct {
52		uint64_t	wwid;
53		uint64_t	lun;
54	} fibre;
55	struct {
56		uint64_t	id_tag;
57	} i2o;
58
59	struct {
60		uint32_t	raid_array_num;
61	} raid;
62	unsigned char pad[16];		/* total length */
63} device_path_t;
64
65
66typedef union interface_path {
67		struct {
68			unsigned short 	baseport;
69		} isa;
70		struct {		/* PCI or PCIX */
71			unsigned char bus;
72			unsigned char device;
73			unsigned char function;
74			unsigned char channel;
75		} pci;
76		char 	pad[8];
77} interface_path_t;
78
79/*
80 * Structure for Int 13 function 48 (EDD 3.0)
81 *
82 * from T13/1484D Revision 2
83 */
84
85#pragma pack(1)
86typedef struct int13_fn48_result {
87	unsigned short		buflen;
88	unsigned short		flags;
89	uint32_t		ncyl;
90	uint32_t		nhead;
91	uint32_t		spt;
92	uint32_t 		nsect_lo;
93	uint32_t		nsect_hi;
94	unsigned short		bps;
95	uint32_t		dpte;
96	unsigned short		magic;		/* BEDD if Path info there */
97	unsigned char		pathinfo_len;
98	unsigned char		res1;
99	unsigned short		res2;
100	char			bustype[4];	/* offset 36 */
101	char			interface_type[8];
102	interface_path_t	interfacepath;
103	device_path_t		devicepath;
104	unsigned char		res3;
105	unsigned char		checksum;	/* offset 73 */
106} fn48_t;
107
108typedef struct int13_fn4b_result {
109	uint8_t		pkt_size;	/* Packet size (== 0x13) */
110
111	uint8_t		boot_mtype;	/* Boot media type: see defines below */
112
113	uint8_t		drivenum;
114	uint8_t		ctlr_idx;
115	uint32_t	lba;
116	uint16_t	dev_spec;
117	uint16_t	buf_seg;
118	uint16_t	load_seg;
119	uint16_t	sect_cnt;
120	uint8_t		cyl_0_7;	/* Bits 0-7 of the 9-bit cylinder cnt */
121	/*
122	 * Bits 0-5: Sector count
123	 *	6-7: High 2 bits of the 9-bit cylinder count
124	 */
125	uint8_t		sec_0_5_and_cyl_8_9;
126	uint8_t		head_cnt;
127} fn4b_t;
128
129#pragma pack()
130
131typedef struct biosdev_data {
132	uchar_t			first_block_valid;
133	uchar_t			first_block[512];
134	uchar_t			edd_valid;
135	fn48_t			fn48_dev_params;
136} biosdev_data_t;
137
138/*
139 * Definitions for boot_mtype in fn4b_t
140 */
141#define	BOOT_MTYPE_MASK			0xF
142#define	BOOT_MTYPE(x)			((x) & BOOT_MTYPE_MASK)
143#define	BOOT_MTYPE_NO_EMUL		0
144#define	BOOT_MTYPE_1_2M_FLOPPY		1
145#define	BOOT_MTYPE_1_44M_FLOPPY		2
146#define	BOOT_MTYPE_2_88M_FLOPPY		3
147#define	BOOT_MTYPE_HARD_DISK		4
148#define	BOOT_MTYPE_INTF_MASK		0xC0
149#define	BOOT_MTYPE_INTF_ATAPI		0x40
150#define	BOOT_MTYPE_INTF_SCSI		0x80
151#define	BOOT_MTYPE_IS_ATAPI(x) \
152	(((x) & BOOT_MTYPE_INTF_MASK) == BOOT_MTYPE_INTF_ATAPI)
153#define	BOOT_MTYPE_IS_SCSI(x) \
154	(((x) & BOOT_MTYPE_INTF_MASK) == BOOT_MTYPE_INTF_SCSI)
155
156#ifdef __cplusplus
157}
158#endif
159
160#endif /* _SYS_BIOSDISK_H */
161