[unix-history] / usr / src / sys / luna68k / dev / screg.h

/*
 * Copyright (c) 1990, 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Van Jacobson of Lawrence Berkeley Laboratory.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)screg.h	8.1 (Berkeley) %G%
 */

/*
 * MB89352 SCSI Protocol Controller Hardware Description.
 */

struct scsidevice {
	u_char	scsi_bdid, p0, p1, p2;		/* 000 */
	u_char	scsi_sctl, p3, p4, p5;		/* 004 */
#define			SCTL_DISABLE	0x80
#define			SCTL_CTRLRST	0x40
#define			SCTL_DIAG	0x20
#define			SCTL_ABRT_ENAB	0x10
#define			SCTL_PARITY_ENAB 0x08
#define			SCTL_SEL_ENAB	0x04
#define			SCTL_RESEL_ENAB	0x02
#define			SCTL_INTR_ENAB	0x01
	u_char	scsi_scmd, p6, p7, p8;		/* 008 */
#define			SCMD_RST	0x10
#define			SCMD_ICPT_XFR	0x08
#define			SCMD_PROG_XFR	0x04
#define			SCMD_PAD	0x01	/* if initiator */
#define			SCMD_PERR_STOP	0x01	/* if target */
			/* command codes */
#define			SCMD_BUS_REL	0x00
#define			SCMD_SELECT	0x20
#define			SCMD_RST_ATN	0x40
#define			SCMD_SET_ATN	0x60
#define			SCMD_XFR	0x80
#define			SCMD_XFR_PAUSE	0xa0
#define			SCMD_RST_ACK	0xc0
#define			SCMD_SET_ACK	0xe0
	u_char	scsi_tmod, p9, p10, p11;	/* 00C */
#define			TMOD_SYNC	0x80
	u_char	scsi_ints, p12, p13, p14;	/* 010 */
#define			INTS_SEL	0x80
#define			INTS_RESEL	0x40
#define			INTS_DISCON	0x20
#define			INTS_CMD_DONE	0x10
#define			INTS_SRV_REQ	0x08
#define			INTS_TIMEOUT	0x04
#define			INTS_HARD_ERR	0x02
#define			INTS_RST	0x01
	u_char	scsi_psns, p15, p16, p17;	/* 014 */
#define			PSNS_REQ	0x80
#define			PSNS_ACK	0x40
#define			PSNS_ATN	0x20
#define			PSNS_SEL	0x10
#define			PSNS_BSY	0x08
#define		scsi_sdgc scsi_psns
#define			SDGC_XFER_ENAB	0x20
	u_char	scsi_ssts, p18, p19, p20;	/* 018 */
#define			SSTS_INITIATOR	0x80
#define			SSTS_TARGET	0x40
#define			SSTS_BUSY	0x20
#define			SSTS_XFR	0x10
#define			SSTS_ACTIVE	(SSTS_INITIATOR|SSTS_XFR)
#define			SSTS_RST	0x08
#define			SSTS_TCZERO	0x04
#define			SSTS_DREG_FULL	0x02
#define			SSTS_DREG_EMPTY	0x01
	u_char	scsi_serr, p21, p22, p23;	/* 01C */
#define			SERR_SCSI_PAR	0x80
#define			SERR_SPC_PAR	0x40
#define			SERR_XFER_OUT	0x20
#define			SERR_TC_PAR	0x08
#define			SERR_PHASE_ERR	0x04
#define			SERR_SHORT_XFR	0x02
#define			SERR_OFFSET	0x01
	u_char	scsi_pctl, p24, p25, p26;	/* 020 */
#define			PCTL_BFINT_ENAB	0x80
	u_char	scsi_mbc,  p27, p28, p29;	/* 024 */
	u_char	scsi_dreg, p30, p31, p32;	/* 028 */
	u_char	scsi_temp, p33, p34, p35;	/* 02C */
	u_char	scsi_tch,  p36, p37, p38;	/* 030 */
	u_char	scsi_tcm,  p39, p40, p41;	/* 034 */
	u_char	scsi_tcl,  p42, p43, p44;	/* 038 */
	u_char	scsi_exbf, p45, p46, p47;	/* 03C */
};

/* psns/pctl phase lines as bits */
#define	PHASE_MSG	0x04
#define	PHASE_CD	0x02		/* =1 if 'command' */
#define	PHASE_IO	0x01		/* =1 if data inbound */
/* Phase lines as values */
#define	PHASE		0x07		/* mask for psns/pctl phase */
#define	DATA_OUT_PHASE	0x00
#define	DATA_IN_PHASE	0x01
#define	CMD_PHASE	0x02
#define	STATUS_PHASE	0x03
#define	BUS_FREE_PHASE	0x04
#define	ARB_SEL_PHASE	0x05	/* Fuji chip combines arbitration with sel. */
#define	MESG_OUT_PHASE	0x06
#define	MESG_IN_PHASE	0x07

/* SCSI Messages */

#define	MSG_CMD_COMPLETE	0x00
#define MSG_EXT_MESSAGE		0x01
#define	MSG_SAVE_DATA_PTR	0x02
#define	MSG_RESTORE_PTR		0x03
#define	MSG_DISCONNECT		0x04
#define	MSG_INIT_DETECT_ERROR	0x05
#define	MSG_ABORT		0x06
#define	MSG_REJECT		0x07
#define	MSG_NOOP		0x08
#define	MSG_PARITY_ERROR	0x09
#define	MSG_BUS_DEVICE_RESET	0x0C
#define	MSG_IDENTIFY		0x80
#define	MSG_IDENTIFY_DR		0xc0	/* (disconnect/reconnect allowed) */
#define	MSG_SYNC_REQ 		0x01

/* SCSI Commands */

#define CMD_TEST_UNIT_READY	0x00
#define CMD_REQUEST_SENSE	0x03
#define	CMD_INQUIRY		0x12
#define CMD_SEND_DIAGNOSTIC	0x1D

#define CMD_REWIND		0x01
#define CMD_FORMAT_UNIT		0x04
#define CMD_READ_BLOCK_LIMITS	0x05
#define CMD_REASSIGN_BLOCKS	0x07
#define CMD_READ		0x08
#define CMD_WRITE		0x0A
#define CMD_WRITE_FILEMARK	0x10
#define CMD_SPACE		0x11
#define CMD_MODE_SELECT		0x15
#define CMD_RELEASE_UNIT	0x17
#define CMD_ERASE		0x19
#define CMD_MODE_SENSE		0x1A
#define CMD_LOADUNLOAD		0x1B
#define CMD_RECEIVE_DIAG	0x1C
#define CMD_SEND_DIAG		0x1D
#define CMD_P_A_MEDIA_REMOVAL	0x1E
#define CMD_READ_CAPACITY	0x25
#define CMD_READ_EXT		0x28
#define CMD_WRITE_EXT		0x2A
#define CMD_READ_DEFECT_DATA	0x37
#define		SD_MANUFAC_DEFECTS	0x14000000
#define		SD_GROWN_DEFECTS	0x0c000000
#define CMD_READ_BUFFER		0x3B
#define CMD_WRITE_BUFFER	0x3C
#define CMD_READ_FULL		0xF0
#define CMD_MEDIA_TEST		0xF1
#define CMD_ACCESS_LOG		0xF2
#define CMD_WRITE_FULL		0xFC
#define CMD_MANAGE_PRIMARY	0xFD
#define CMD_EXECUTE_DATA	0xFE

/* SCSI status bits */

#define	STS_CHECKCOND	0x02	/* Check Condition (ie., read sense) */
#define	STS_CONDMET	0x04	/* Condition Met (ie., search worked) */
#define	STS_BUSY	0x08
#define	STS_INTERMED	0x10	/* Intermediate status sent */
#define	STS_EXT		0x80	/* Extended status valid */

/* command descriptor blocks */

struct scsi_cdb6 {
	u_char	cmd;		/* command code */
	u_char	lun:  3,	/* logical unit on ctlr */
		lbah: 5;	/* msb of read/write logical block addr */
	u_char	lbam;		/* middle byte of l.b.a. */
	u_char	lbal;		/* lsb of l.b.a. */
	u_char	len;		/* transfer length */
	u_char	xtra;
};

struct scsi_cdb10 {
	u_char	cmd;		/* command code */
	u_char	lun: 3,		/* logical unit on ctlr */
		   : 4,
		rel: 1;		/* l.b.a. is relative addr if =1 */
	u_char	lbah;		/* msb of read/write logical block addr */
	u_char	lbahm;		/* high middle byte of l.b.a. */
	u_char	lbalm;		/* low middle byte of l.b.a. */
	u_char	lbal;		/* lsb of l.b.a. */
	u_char	reserved;
	u_char	lenh;		/* msb transfer length */
	u_char	lenl;		/* lsb transfer length */
	u_char	xtra;
};

/* basic sense data */

struct scsi_sense {
	u_char	valid: 1,	/* l.b.a. is valid */
		class: 3,
		code:  4;
	u_char	vu:    4,	/* vendor unique */
		lbah:  4;
	u_char	lbam;
	u_char	lbal;
};

struct scsi_xsense {
	u_char	valid: 1,	/* l.b.a. is valid */
		class: 3,
		code:  4;
	u_char	segment;
	u_char	filemark: 1,
		eom:      1,
		ili:      1,	/* illegal length indicator */
		rsvd:	  1,
		key:	  4;
	u_char	info1;
	u_char	info2;
	u_char	info3;
	u_char	info4;
	u_char	len;		/* additional sense length */
};

/* inquiry data */
struct scsi_inquiry {
	u_char	type;
	u_char	qual;
	u_char	version;
	u_char	rsvd;
	u_char	len;
	char	class[3];
	char	vendor_id[8];
	char	product_id[16];
	char	rev[4];
};

struct scsi_format_parms {		/* physical BFI format */
	u_short	reserved;
	u_short	list_len;
	struct defect {
		unsigned cyl  : 24;
		unsigned head : 8;
		long	bytes_from_index;
	} defect[127];
} format_parms;

struct scsi_reassign_parms {
	u_short	reserved;
	u_short	list_len;	/* length in bytes of defects only */
	struct new_defect {
		unsigned lba;	/* logical block address */
	} new_defect[2];
} reassign_parms;

struct scsi_modesel_hdr {
	u_char	rsvd1;
	u_char	media_type;
	u_char 	rsvd2;
	u_char	block_desc_len;
	u_int	density		: 8;
	u_int	number_blocks	:24;
	u_int	rsvd3		: 8;
	u_int	block_length	:24;
}; 

struct scsi_modesense_hdr {
	u_char	len;
	u_char	media_type;
	u_char 	wp    : 1;
	u_char 	rsvd1 : 7;
	u_char	block_desc_len;
	u_int	density		: 8;
	u_int	number_blocks	:24;
	u_int	rsvd2		: 8;
	u_int	block_length	:24;
}; 

/*
 * Mode Select / Mode sense "pages"
 */

/*
 * Page One - Error Recovery Parameters 
 */
struct scsi_err_recovery {
	u_char	page_savable	: 1;	/* save parameters */
	u_char	reserved	: 1;
	u_char	page_code	: 6;	/* = 0x01 */
	u_char	page_length;		/* = 6 */
	u_char	awre		: 1;	/* auto write realloc enabled */
	u_char	arre		: 1;	/* auto read realloc enabled */
	u_char	tb		: 1;	/* transfer block */
	u_char 	rc		: 1;	/* read continuous */
	u_char	eec		: 1;	/* enable early correction */
	u_char	per		: 1;	/* post error */
	u_char	dte		: 1;	/* disable transfer on error */
	u_char	dcr		: 1;	/* disable correction */
	u_char	retry_count;
	u_char	correction_span;
	u_char	head_offset_count;
	u_char	strobe_offset_count;
	u_char	recovery_time_limit;
};

/*
 * Page Two - Disconnect / Reconnect Control Parameters
 */
struct scsi_disco_reco {
	u_char	page_savable	: 1;	/* save parameters */
	u_char	rsvd		: 1;
	u_char	page_code	: 6;	/* = 0x02 */
	u_char	page_length;		/* = 10 */
	u_char	buffer_full_ratio;	/* write, how full before reconnect? */
	u_char	buffer_empty_ratio;	/* read, how full before reconnect? */

	u_short	bus_inactivity_limit;	/* how much bus time for busy */
	u_short	disconnect_time_limit;	/* min to remain disconnected */
	u_short	connect_time_limit;	/* min to remain connected */
	u_short	reserved_1;
};

/*
 * Page Three - Direct Access Device Format Parameters
 */
struct scsi_format {
	u_char	page_savable	: 1;	/* save parameters */
	u_char	rsvd		: 1;
	u_char	page_code	: 6;	/* = 0x03 */
	u_char	page_length;		/* = 22 */
	u_short	tracks_per_zone;	/*  Handling of Defects Fields */
	u_short	alt_sect_zone;
	u_short alt_tracks_zone;
	u_short	alt_tracks_vol;
	u_short	sect_track;		/* Track Format Field */
	u_short data_sect;		/* Sector Format Fields */
	u_short	interleave;
	u_short	track_skew_factor;
	u_short	cyl_skew_factor;
	u_char	ssec		: 1;	/* Drive Type Field */
	u_char	hsec		: 1;
	u_char	rmb		: 1;
	u_char	surf		: 1;
	u_char	ins		: 1;
	u_char	reserved_1	: 3;
	u_char	reserved_2;
	u_char	reserved_3;
	u_char	reserved_4;
};

/*
 * Page Four - Rigid Disk Drive Geometry Parameters 
 */
struct scsi_geometry {
	u_char	page_savable	: 1;	/* save parameters */
	u_char	rsvd		: 1;
	u_char	page_code	: 6;	/* = 0x04 */
	u_char	page_length;		/* = 18 */
	u_char	cyl_ub;			/* number of cylinders */
	u_char	cyl_mb;
	u_char	cyl_lb;
	u_char	heads;			/* number of heads */
	u_char	precomp_cyl_ub;		/* cylinder to start precomp */
	u_char	precomp_cyl_mb;
	u_char	precomp_cyl_lb;
	u_char	current_cyl_ub;		/* cyl to start reduced current */
	u_char	current_cyl_mb;
	u_char	current_cyl_lb;
	u_short	step_rate;		/* drive step rate */
	u_char	landing_cyl_ub;		/* landing zone cylinder */
	u_char	landing_cyl_mb;
	u_char	landing_cyl_lb;
	u_char	reserved_1;
	u_char	reserved_2;
	u_char	reserved_3;
};

/*
 * Page 0x38 - Cache Control Parameters
 */
struct scsi_cache {
	u_char	page_savable	: 1;	/* save parameters */
	u_char	rsvd		: 1;
	u_char	page_code	: 6;	/* = 0x38 */
	u_char	page_length;		/* = 14 */
	u_char rsvd_1	: 1;
	u_char wie	: 1; 		/* write index enable */
	u_char rsvd_2	: 1;
	u_char ce	: 1; 		/* cache enable */
	u_char table_size : 4;
	u_char	prefetch_threshold;
	u_char	maximum_threshold;
	u_char	maximumprefetch_multiplier;
	u_char	minimum_threshold;
	u_char	minimum_prefetch_multiplier;
	u_char	reserved[8];
};

/*
 * Driver ioctl's for various scsi operations.
 */
#ifndef _IOCTL_
#include <sys/ioctl.h>
#endif

/*
 * Control for SCSI "format" mode.
 *
 * "Format" mode allows a privileged process to issue direct SCSI
 * commands to a drive (it is intended primarily to allow on-line
 * formatting).  SDIOCSFORMAT with a non-zero arg will put the drive
 * into format mode; a zero arg will take it out.  When in format
 * mode, only the process that issued the SDIOCFORMAT can read or
 * write the drive.
 *
 * In format mode, process is expected to
 *	- do SDIOCSCSICOMMAND to supply cdb for next SCSI op
 *	- do read or write as appropriate for cdb
 *	- if i/o error, optionally do SDIOCSENSE to get completion
 *	  status and sense data from last scsi operation.
 */

struct scsi_fmt_cdb {
	int len;		/* cdb length (in bytes) */
	u_char cdb[28];		/* cdb to use on next read/write */
};

struct scsi_fmt_sense {
	u_int status;		/* completion status of last op */
	u_char sense[28];	/* sense data (if any) from last op */
};

#define	SDIOCSFORMAT		_IOW('S', 0x1, int)
#define	SDIOCGFORMAT		_IOR('S', 0x2, int)
#define	SDIOCSCSICOMMAND	_IOW('S', 0x3, struct scsi_fmt_cdb)
#define	SDIOCSENSE		_IOR('S', 0x4, struct scsi_fmt_sense)
Commit	Line	Data
ded625b2 AF	1	/*
	2	* Copyright (c) 1990, 1992, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Van Jacobson of Lawrence Berkeley Laboratory.
	7	*
	8	* %sccs.include.redist.c%
	9	*
	10	* @(#)screg.h 8.1 (Berkeley) %G%
	11	*/
	12
	13	/*
	14	* MB89352 SCSI Protocol Controller Hardware Description.
	15	*/
	16
	17	struct scsidevice {
	18	u_char scsi_bdid, p0, p1, p2; /* 000 */
	19	u_char scsi_sctl, p3, p4, p5; /* 004 */
	20	#define SCTL_DISABLE 0x80
	21	#define SCTL_CTRLRST 0x40
	22	#define SCTL_DIAG 0x20
	23	#define SCTL_ABRT_ENAB 0x10
	24	#define SCTL_PARITY_ENAB 0x08
	25	#define SCTL_SEL_ENAB 0x04
	26	#define SCTL_RESEL_ENAB 0x02
	27	#define SCTL_INTR_ENAB 0x01
	28	u_char scsi_scmd, p6, p7, p8; /* 008 */
	29	#define SCMD_RST 0x10
	30	#define SCMD_ICPT_XFR 0x08
	31	#define SCMD_PROG_XFR 0x04
	32	#define SCMD_PAD 0x01 /* if initiator */
	33	#define SCMD_PERR_STOP 0x01 /* if target */
	34	/* command codes */
	35	#define SCMD_BUS_REL 0x00
	36	#define SCMD_SELECT 0x20
	37	#define SCMD_RST_ATN 0x40
	38	#define SCMD_SET_ATN 0x60
	39	#define SCMD_XFR 0x80
	40	#define SCMD_XFR_PAUSE 0xa0
	41	#define SCMD_RST_ACK 0xc0
	42	#define SCMD_SET_ACK 0xe0
	43	u_char scsi_tmod, p9, p10, p11; /* 00C */
	44	#define TMOD_SYNC 0x80
	45	u_char scsi_ints, p12, p13, p14; /* 010 */
	46	#define INTS_SEL 0x80
	47	#define INTS_RESEL 0x40
	48	#define INTS_DISCON 0x20
	49	#define INTS_CMD_DONE 0x10
	50	#define INTS_SRV_REQ 0x08
	51	#define INTS_TIMEOUT 0x04
	52	#define INTS_HARD_ERR 0x02
	53	#define INTS_RST 0x01
	54	u_char scsi_psns, p15, p16, p17; /* 014 */
	55	#define PSNS_REQ 0x80
	56	#define PSNS_ACK 0x40
	57	#define PSNS_ATN 0x20
	58	#define PSNS_SEL 0x10
	59	#define PSNS_BSY 0x08
	60	#define scsi_sdgc scsi_psns
	61	#define SDGC_XFER_ENAB 0x20
	62	u_char scsi_ssts, p18, p19, p20; /* 018 */
	63	#define SSTS_INITIATOR 0x80
	64	#define SSTS_TARGET 0x40
65	#define SSTS_BUSY 0x20
66	#define SSTS_XFR 0x10
67	#define SSTS_ACTIVE (SSTS_INITIATOR\|SSTS_XFR)
68	#define SSTS_RST 0x08
69	#define SSTS_TCZERO 0x04
70	#define SSTS_DREG_FULL 0x02
71	#define SSTS_DREG_EMPTY 0x01
72	u_char scsi_serr, p21, p22, p23; /* 01C */
73	#define SERR_SCSI_PAR 0x80
74	#define SERR_SPC_PAR 0x40
75	#define SERR_XFER_OUT 0x20
76	#define SERR_TC_PAR 0x08
77	#define SERR_PHASE_ERR 0x04
78	#define SERR_SHORT_XFR 0x02
79	#define SERR_OFFSET 0x01
80	u_char scsi_pctl, p24, p25, p26; /* 020 */
81	#define PCTL_BFINT_ENAB 0x80
82	u_char scsi_mbc, p27, p28, p29; /* 024 */
83	u_char scsi_dreg, p30, p31, p32; /* 028 */
84	u_char scsi_temp, p33, p34, p35; /* 02C */
85	u_char scsi_tch, p36, p37, p38; /* 030 */
86	u_char scsi_tcm, p39, p40, p41; /* 034 */
87	u_char scsi_tcl, p42, p43, p44; /* 038 */
88	u_char scsi_exbf, p45, p46, p47; /* 03C */
89	};
90
91	/* psns/pctl phase lines as bits */
92	#define PHASE_MSG 0x04
93	#define PHASE_CD 0x02 /* =1 if 'command' */
94	#define PHASE_IO 0x01 /* =1 if data inbound */
95	/* Phase lines as values */
96	#define PHASE 0x07 /* mask for psns/pctl phase */
97	#define DATA_OUT_PHASE 0x00
98	#define DATA_IN_PHASE 0x01
99	#define CMD_PHASE 0x02
100	#define STATUS_PHASE 0x03
101	#define BUS_FREE_PHASE 0x04
102	#define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */
103	#define MESG_OUT_PHASE 0x06
104	#define MESG_IN_PHASE 0x07
105
106	/* SCSI Messages */
107
108	#define MSG_CMD_COMPLETE 0x00
109	#define MSG_EXT_MESSAGE 0x01
110	#define MSG_SAVE_DATA_PTR 0x02
111	#define MSG_RESTORE_PTR 0x03
112	#define MSG_DISCONNECT 0x04
113	#define MSG_INIT_DETECT_ERROR 0x05
114	#define MSG_ABORT 0x06
115	#define MSG_REJECT 0x07
116	#define MSG_NOOP 0x08
117	#define MSG_PARITY_ERROR 0x09
118	#define MSG_BUS_DEVICE_RESET 0x0C
119	#define MSG_IDENTIFY 0x80
120	#define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */
121	#define MSG_SYNC_REQ 0x01
122
123	/* SCSI Commands */
124
125	#define CMD_TEST_UNIT_READY 0x00
126	#define CMD_REQUEST_SENSE 0x03
127	#define CMD_INQUIRY 0x12
128	#define CMD_SEND_DIAGNOSTIC 0x1D
129
130	#define CMD_REWIND 0x01
131	#define CMD_FORMAT_UNIT 0x04
132	#define CMD_READ_BLOCK_LIMITS 0x05
133	#define CMD_REASSIGN_BLOCKS 0x07
134	#define CMD_READ 0x08
135	#define CMD_WRITE 0x0A
136	#define CMD_WRITE_FILEMARK 0x10
137	#define CMD_SPACE 0x11
138	#define CMD_MODE_SELECT 0x15
139	#define CMD_RELEASE_UNIT 0x17
140	#define CMD_ERASE 0x19
141	#define CMD_MODE_SENSE 0x1A
142	#define CMD_LOADUNLOAD 0x1B
143	#define CMD_RECEIVE_DIAG 0x1C
144	#define CMD_SEND_DIAG 0x1D
145	#define CMD_P_A_MEDIA_REMOVAL 0x1E
146	#define CMD_READ_CAPACITY 0x25
147	#define CMD_READ_EXT 0x28
148	#define CMD_WRITE_EXT 0x2A
149	#define CMD_READ_DEFECT_DATA 0x37
150	#define SD_MANUFAC_DEFECTS 0x14000000
151	#define SD_GROWN_DEFECTS 0x0c000000
152	#define CMD_READ_BUFFER 0x3B
153	#define CMD_WRITE_BUFFER 0x3C
154	#define CMD_READ_FULL 0xF0
155	#define CMD_MEDIA_TEST 0xF1
156	#define CMD_ACCESS_LOG 0xF2
157	#define CMD_WRITE_FULL 0xFC
158	#define CMD_MANAGE_PRIMARY 0xFD
159	#define CMD_EXECUTE_DATA 0xFE
160
161	/* SCSI status bits */
162
163	#define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */
164	#define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */
165	#define STS_BUSY 0x08
166	#define STS_INTERMED 0x10 /* Intermediate status sent */
167	#define STS_EXT 0x80 /* Extended status valid */
168
169	/* command descriptor blocks */
170
171	struct scsi_cdb6 {
172	u_char cmd; /* command code */
173	u_char lun: 3, /* logical unit on ctlr */
174	lbah: 5; /* msb of read/write logical block addr */
175	u_char lbam; /* middle byte of l.b.a. */
176	u_char lbal; /* lsb of l.b.a. */
177	u_char len; /* transfer length */
178	u_char xtra;
179	};
180
181	struct scsi_cdb10 {
182	u_char cmd; /* command code */
183	u_char lun: 3, /* logical unit on ctlr */
184	: 4,
185	rel: 1; /* l.b.a. is relative addr if =1 */
186	u_char lbah; /* msb of read/write logical block addr */
187	u_char lbahm; /* high middle byte of l.b.a. */
188	u_char lbalm; /* low middle byte of l.b.a. */
189	u_char lbal; /* lsb of l.b.a. */
190	u_char reserved;
191	u_char lenh; /* msb transfer length */
192	u_char lenl; /* lsb transfer length */
193	u_char xtra;
194	};
195
196	/* basic sense data */
197
198	struct scsi_sense {
199	u_char valid: 1, /* l.b.a. is valid */
200	class: 3,
201	code: 4;
202	u_char vu: 4, /* vendor unique */
203	lbah: 4;
204	u_char lbam;
205	u_char lbal;
206	};
207
208	struct scsi_xsense {
209	u_char valid: 1, /* l.b.a. is valid */
210	class: 3,
211	code: 4;
212	u_char segment;
213	u_char filemark: 1,
214	eom: 1,
215	ili: 1, /* illegal length indicator */
216	rsvd: 1,
217	key: 4;
218	u_char info1;
219	u_char info2;
220	u_char info3;
221	u_char info4;
222	u_char len; /* additional sense length */
223	};
224
225	/* inquiry data */
226	struct scsi_inquiry {
227	u_char type;
228	u_char qual;
229	u_char version;
230	u_char rsvd;
231	u_char len;
232	char class[3];
233	char vendor_id[8];
234	char product_id[16];
235	char rev[4];
236	};
237
238	struct scsi_format_parms { /* physical BFI format */
239	u_short reserved;
240	u_short list_len;
241	struct defect {
242	unsigned cyl : 24;
243	unsigned head : 8;
244	long bytes_from_index;
245	} defect[127];
246	} format_parms;
247
248	struct scsi_reassign_parms {
249	u_short reserved;
250	u_short list_len; /* length in bytes of defects only */
251	struct new_defect {
252	unsigned lba; /* logical block address */
253	} new_defect[2];
254	} reassign_parms;
255
256	struct scsi_modesel_hdr {
257	u_char rsvd1;
258	u_char media_type;
259	u_char rsvd2;
260	u_char block_desc_len;
261	u_int density : 8;
262	u_int number_blocks :24;
263	u_int rsvd3 : 8;
264	u_int block_length :24;
265	};
266
267	struct scsi_modesense_hdr {
268	u_char len;
269	u_char media_type;
270	u_char wp : 1;
271	u_char rsvd1 : 7;
272	u_char block_desc_len;
273	u_int density : 8;
274	u_int number_blocks :24;
275	u_int rsvd2 : 8;
276	u_int block_length :24;
277	};
278
279	/*
280	* Mode Select / Mode sense "pages"
281	*/
282
283	/*
284	* Page One - Error Recovery Parameters
285	*/
286	struct scsi_err_recovery {
287	u_char page_savable : 1; /* save parameters */
288	u_char reserved : 1;
289	u_char page_code : 6; /* = 0x01 */
290	u_char page_length; /* = 6 */
291	u_char awre : 1; /* auto write realloc enabled */
292	u_char arre : 1; /* auto read realloc enabled */
293	u_char tb : 1; /* transfer block */
294	u_char rc : 1; /* read continuous */
295	u_char eec : 1; /* enable early correction */
296	u_char per : 1; /* post error */
297	u_char dte : 1; /* disable transfer on error */
298	u_char dcr : 1; /* disable correction */
299	u_char retry_count;
300	u_char correction_span;
301	u_char head_offset_count;
302	u_char strobe_offset_count;
303	u_char recovery_time_limit;
304	};
305
306	/*
307	* Page Two - Disconnect / Reconnect Control Parameters
308	*/
309	struct scsi_disco_reco {
310	u_char page_savable : 1; /* save parameters */
311	u_char rsvd : 1;
312	u_char page_code : 6; /* = 0x02 */
313	u_char page_length; /* = 10 */
314	u_char buffer_full_ratio; /* write, how full before reconnect? */
315	u_char buffer_empty_ratio; /* read, how full before reconnect? */
316
317	u_short bus_inactivity_limit; /* how much bus time for busy */
318	u_short disconnect_time_limit; /* min to remain disconnected */
319	u_short connect_time_limit; /* min to remain connected */
320	u_short reserved_1;
321	};
322
323	/*
324	* Page Three - Direct Access Device Format Parameters
325	*/
326	struct scsi_format {
327	u_char page_savable : 1; /* save parameters */
328	u_char rsvd : 1;
329	u_char page_code : 6; /* = 0x03 */
330	u_char page_length; /* = 22 */
331	u_short tracks_per_zone; /* Handling of Defects Fields */
332	u_short alt_sect_zone;
333	u_short alt_tracks_zone;
334	u_short alt_tracks_vol;
335	u_short sect_track; /* Track Format Field */
336	u_short data_sect; /* Sector Format Fields */
337	u_short interleave;
338	u_short track_skew_factor;
339	u_short cyl_skew_factor;
340	u_char ssec : 1; /* Drive Type Field */
341	u_char hsec : 1;
342	u_char rmb : 1;
343	u_char surf : 1;
344	u_char ins : 1;
345	u_char reserved_1 : 3;
346	u_char reserved_2;
347	u_char reserved_3;
348	u_char reserved_4;
349	};
350
351	/*
352	* Page Four - Rigid Disk Drive Geometry Parameters
353	*/
354	struct scsi_geometry {
355	u_char page_savable : 1; /* save parameters */
356	u_char rsvd : 1;
357	u_char page_code : 6; /* = 0x04 */
358	u_char page_length; /* = 18 */
359	u_char cyl_ub; /* number of cylinders */
360	u_char cyl_mb;
361	u_char cyl_lb;
362	u_char heads; /* number of heads */
363	u_char precomp_cyl_ub; /* cylinder to start precomp */
364	u_char precomp_cyl_mb;
365	u_char precomp_cyl_lb;
366	u_char current_cyl_ub; /* cyl to start reduced current */
367	u_char current_cyl_mb;
368	u_char current_cyl_lb;
369	u_short step_rate; /* drive step rate */
370	u_char landing_cyl_ub; /* landing zone cylinder */
371	u_char landing_cyl_mb;
372	u_char landing_cyl_lb;
373	u_char reserved_1;
374	u_char reserved_2;
375	u_char reserved_3;
376	};
377
378	/*
379	* Page 0x38 - Cache Control Parameters
380	*/
381	struct scsi_cache {
382	u_char page_savable : 1; /* save parameters */
383	u_char rsvd : 1;
384	u_char page_code : 6; /* = 0x38 */
385	u_char page_length; /* = 14 */
386	u_char rsvd_1 : 1;
387	u_char wie : 1; /* write index enable */
388	u_char rsvd_2 : 1;
389	u_char ce : 1; /* cache enable */
390	u_char table_size : 4;
391	u_char prefetch_threshold;
392	u_char maximum_threshold;
393	u_char maximumprefetch_multiplier;
394	u_char minimum_threshold;
395	u_char minimum_prefetch_multiplier;
396	u_char reserved[8];
397	};
398
399	/*
400	* Driver ioctl's for various scsi operations.
401	*/
402	#ifndef _IOCTL_
403	#include <sys/ioctl.h>
404	#endif
405
406	/*
407	* Control for SCSI "format" mode.
408	*
409	* "Format" mode allows a privileged process to issue direct SCSI
410	* commands to a drive (it is intended primarily to allow on-line
411	* formatting). SDIOCSFORMAT with a non-zero arg will put the drive
412	* into format mode; a zero arg will take it out. When in format
413	* mode, only the process that issued the SDIOCFORMAT can read or
414	* write the drive.
415	*
416	* In format mode, process is expected to
417	* - do SDIOCSCSICOMMAND to supply cdb for next SCSI op
418	* - do read or write as appropriate for cdb
419	* - if i/o error, optionally do SDIOCSENSE to get completion
420	* status and sense data from last scsi operation.
421	*/
422
423	struct scsi_fmt_cdb {
424	int len; /* cdb length (in bytes) */
425	u_char cdb[28]; /* cdb to use on next read/write */
426	};
427
428	struct scsi_fmt_sense {
429	u_int status; /* completion status of last op */
430	u_char sense[28]; /* sense data (if any) from last op */
431	};
432
433	#define SDIOCSFORMAT _IOW('S', 0x1, int)
434	#define SDIOCGFORMAT _IOR('S', 0x2, int)
435	#define SDIOCSCSICOMMAND _IOW('S', 0x3, struct scsi_fmt_cdb)
436	#define SDIOCSENSE _IOR('S', 0x4, struct scsi_fmt_sense)