sdreg.h

操作系统SunOS 4.1.3版本的源码

/* @(#)sdreg.h       1.1 92/07/30 Copyr 1987 Sun Micro */

/*
 * Defines for SCSI disk drives.
 */
#define SD_TIMEOUT		/* Enable command timeouts */
/*#define SD_FORMAT  		/* Enable on-line formatting mods */
#define SD_REASSIGN		/* Enable auto disk repair */

/*
 * Driver state machine codes -- Do not change order!
 * Opening states:
 *	closed -> open 
 *
 *	closed -> opening         ||   -> open
 *
 *	closed -> opening         ||   -> open
 *                opening_delay   ||
 *
 * Closing states:
 *	open   -> closed
 *
 * Open states:
 *	open   -> open (passed command)
 *
 *	open   -> sensing -> open (failed command)
 *
 *	open   -> sensing -> retrying_cmd -> open
 */
#define CLOSED			0
#define OPEN_FAILED		1
#define OPENING_DELAY		2
#define OPENING			3
#define MAPPING			4
#define SENSING			5
#define RETRYING		6
#define OPEN			7

/*
 * SCSI disk controller specific stuff.
 */
#define CTYPE_UNKNOWN		0
#define CTYPE_MD21		1
#define CTYPE_ACB4000		2
#define CTYPE_CCS		3

#ifndef SD_FORMAT
#define DK_NOERROR		0
#define DK_CORRECTED		1
#define DK_RECOVERED		2
#define DK_FATAL		3
#endif SD_FORMAT

/*
 * Special commands for internal use only.
 */
#define SC_READ_LABEL		0x80	/* phony - for int use only */
#define SC_SPECIAL_READ		0x81	/* phony - for int use only */
#define SC_SPECIAL_WRITE	0x82	/* phony - for int use only */

/*
 * Define various buffer and I/O block sizes
 */
#define SECSIZE			512		/* Bytes/sector */
#define SECDIV			9		/* log2 (SECSIZE) */
#define MAXBUFSIZE		(63 * 1024)	/* 63 KB max size of buffer */

/*
 * Defines for SCSI disk format cdb.
 */
#define b_cylin			b_resid
#define fmt_parm_bits		g0_addr2	/* for format options */
#define fmt_interleave		g0_count0	/* for encode interleave */
#define defect_list_descrip	g1_addr3	/* list description bits */

/*
 * Bits in the special command flags field.
 */
#define SD_SILENT		0x0001	/* don't print error messages */
#define SD_DVMA_RD		0x0002	/* enable DVMA memory reads */
#define SD_DVMA_WR		0x0004	/* enable DVMA memory writes */
#define SD_NORETRY		0x0008	/* disable driver error recovery */
#define SC_SBF_SILENT		0x0001	/* don't print error messages */
#define SC_SBF_DIAGNOSE		0x0002	/* collect stats for diagnostic */
#define SC_SBF_DIR_IN		0x0004	/* need to copyin info */
#define SC_SBF_IOCTL		0x8000	/* cmd being run on behalf of ioctl */
#define SC_NOMSG		0x01	/* don't print error messages */
#define SC_DIAG			0x02	/* collect diagnostic info ??? */
#define SC_IOCTL		0x04	/* running cmd for ioctl */

/*
 * Error code fields for MD21 extended sense struct.
 * Not exhaustive - just those we treat specially.
 */
#define SC_ERR_READ_RECOV_RETRIES	0x17	/* ctlr fixed error w/retry */
#define SC_ERR_READ_RECOV_ECC		0x18	/* ctlr fixed error w/ECC */


/*
 * ACB4000 error codes.  
 * They are the concatenation of the class and code info.
 */

/* Class 0 - drive errors */
#define SC_ERR_ACB_NO_SENSE	0x00	/* no error or sense info */
#define SC_ERR_ACB_NO_INDEX	0x01	/* no index or sector pulse */
#define SC_ERR_ACB_NO_SEEK_CMPL	0x02	/* no seek complete signal */
#define SC_ERR_ACB_WRT_FAULT	0x03	/* write fault */
#define SC_ERR_ACB_NOT_READY	0x04	/* drive not ready */
#define SC_ERR_ACB_NO_TRACK_0	0x06	/* no track 0 */

/* Class 1 - target errors */
#define SC_ERR_ACB_ID_CRC	0x10	/* ID field not found after retry */
#define SC_ERR_ACB_UNCOR_DATA	0x11	/* uncorrectable data error */
#define SC_ERR_ACB_ID_ADDR_MK	0x12	/* missing ID address mark */
#define SC_ERR_ACB_REC_NOT_FND	0x14	/* record not found */
#define SC_ERR_ACB_SEEK		0x15	/* seek error */
#define SC_ERR_ACB_DATA_CHECK	0x18	/* data check */

/* Class 2 - system-related errors */
#define SC_ERR_ACB_ECC_VERIFY	0x19	/* ECC error detected during verify */
#define SC_ERR_ACB_INTERLEAVE	0x1A	/* specified interleave too large */
#define SC_ERR_ACB_BAD_FORMAT	0x1C	/* drive not properly formatted */
#define SC_ERR_ACB_ILLEGAL_CMD	0x20	/* illegal command */
#define SC_ERR_ACB_ILLEGAL_BLK	0x21	/* illegal block address */
#define SC_ERR_ACB_VOL_OVERFLOW	0x23	/* illegal block addr after 1st blk */
#define SC_ERR_ACB_BAD_ARG	0x24	/* bad argument */
#define SC_ERR_ACB_ILLEGAL_LUN	0x25	/* invalid logical unit number */
#define SC_ERR_ACB_CART_CHANGE	0x28	/* new cartridge inserted */
#define SC_ERR_ACB_ERR_OVERFLOW	0x2C	/* too many errors */

/* Unknown psuedo error - used for convenience */
#define SC_ERR_ACB_ERR_UNKNOWN	0xFF	/* unknown psuedo error */


/*
 * defines for value of fmt_parm_bits.
 */
#define FPB_BFI			0x04		/* bytes-from-index fmt */
#define FPB_CMPLT		0x08		/* full defect list provided */
#define FPB_DATA		0x10		/* defect list data provided */

/*
 * Defines for value of defect_list_descrip.
 */
#define	DLD_MAN_DEF_LIST	0x10		/* manufacturer's defect list */
#define	DLD_GROWN_DEF_LIST	0x08		/* grown defect list */
#define	DLD_BLOCK_FORMAT	0x00		/* block format */
#define	DLD_BFI_FORMAT		0x04		/* bytes-from-index format */
#define	DLD_PS_FORMAT		0x05		/* physical sector format */


/*
 * Disk defect list - used by format command.
 */
/******************** NOTE: this should be cleaned up! ***********************/
#define ST506_NDEFECT	127     /* must fit in 1K controller buffer... */
#define ESDI_NDEFECT	ST506_NDEFECT	/* hack??? */

#define RDEF_ALL	0	/* read all defects */
#define RDEF_MANUF	1	/* read manufacturer's defects */
#define RDEF_CKLEN	2	/* check length of manufacturer's list */

struct scsi_bfi_defect {	/* defect in bytes from index format */
	unsigned cyl  : 24;
	unsigned head : 8;
	long   	 bytes_from_index;
};

struct scsi_format_params {	/* BFI format list */
	u_short reserved;
	u_short length;
	struct  scsi_bfi_defect list[ESDI_NDEFECT];
};

/*
 * Defect list returned by READ_DEFECT_LIST command.
 */
struct scsi_defect_hdr {	/* For getting defect list size */
	u_char	reserved;
	u_char	descriptor;
	u_short	length;
};
struct scsi_defect_list {	/* BFI format list */
	u_char	reserved;
	u_char	descriptor;
	u_short	length;
	struct	scsi_bfi_defect list[ESDI_NDEFECT];
};

/*
 * Defect list format used by reassign block command (logical block format).
 * This defect list is limited to 1 defect, as that is the only way
 * we use it.
 */
struct scsi_reassign_blk {
	u_short	reserved;
	u_short length;		/* defect length in bytes ( defects * 4) */
	u_int 	defect;		/* Logical block address of defect */
};
/*
 * Mode Select Page Codes
 */
#define ERR_RECOVERY_PARMS	0x01
#define DISCO_RECO_PARMS	0x02
#define FORMAT_PARMS		0x03
#define GEOMETRY_PARMS		0x04
#define CERTIFICATION_PARMS	0x06
#define CACHE_PARMS		0x38

/*
 * Mode select header
 */
struct ccs_modesel_head {
	u_char	reserved1;
	u_char	medium;			/* medium type */
	u_char 	reserved2;
	u_char	block_desc_length;	/* block descriptor length */
	u_char	density;		/* density code */
	u_char	number_blocks_hi;
	u_char	number_blocks_med;
	u_char	number_blocks_lo;
	u_char	reserved3;
	u_char	block_length_hi;
	u_short	block_length;
}; 

/*
 * Page 1 - Error Recovery Parameters 
 */
struct ccs_err_recovery {
	u_char	reserved	: 2;
	u_char	page_code	: 6;	/* define page function */
	u_char	page_length;		/* length of current page */
	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 2 - Disconnect / Reconnect Control Parameters
 */
struct ccs_disco_reco {
	u_char	reserved	: 2;
	u_char	page_code	: 6;	/* define page function */
	u_char	page_length;		/* length of current page */
	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 3 - Direct Access Device Format Parameters
 */
struct ccs_format {
	u_char	reserved	: 2;
	u_char	page_code	: 6;	/* define page function */
	u_char	page_length;		/* length of current page */
	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;
	u_short	cylinder_skew;
	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 4 - Rigid Disk Drive Geometry Parameters 
 */
struct ccs_geometry {
	u_char	reserved	: 2;
	u_char	page_code	: 6;	/* define page function */
	u_char	page_length;		/* length of current page */
	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 38 - Cache Parameters 
 */
struct ccs_cache {
	u_char	reserved	: 2;
	u_char	page_code	: 6;	/* define page function */
	u_char	page_length;		/* length of current page */
	u_char	mode;			/* Cache control and size */
	u_char	threshold;		/* Prefetch threshold */
	u_char	max_prefetch;		/* Max. prefetch */
	u_char	max_multiplier;		/* Max. prefetch multiplier */
	u_char	min_prefetch;		/* Min. prefetch */
	u_char	min_multiplier;		/* Min. prefetch multiplier */
	u_char	rsvd2[8];
};
	
struct ccs_mode_select_parms {
	long	edl_len;
	long	reserved;
	long	bsize;
	unsigned fmt_code :8;
	unsigned ncyl	  :16;
	unsigned nhead    :8;
	u_short	rwc_cyl;
	u_short	wprc_cyl;
	u_char	ls_pos;
	u_char	sporc;
};

struct acb4000_mode_select_parms {
	long	edl_len;
	long	reserved;
	long	bsize;
	unsigned fmt_code :8;
	unsigned ncyl     :16;
	unsigned nhead    :8;
	u_short	rwc_cyl;
	u_short	wprc_cyl;
	u_char	ls_pos;
	u_char	sporc;
};