usr/src/sys/stand.att/saio.h

/*	saio.h	4.14	%G%	*/

/*
 * Header file for standalone package
 */

/*
 * Io block: includes an
 * inode, cells for the use of seek, etc,
 * and a buffer.
 */
struct	iob {
	int	i_flgs;		/* see F_ below */
	struct	inode i_ino;	/* inode, if file */
	int	i_unit;		/* pseudo device unit */
	daddr_t	i_boff;		/* block offset on device */
	daddr_t	i_cyloff;	/* cylinder offset on device */
	off_t	i_offset;	/* seek offset in file */
	daddr_t	i_bn;		/* 1st block # of next read */
	char	*i_ma;		/* memory address of i/o buffer */
	int	i_cc;		/* character count of transfer */
	int	i_error;	/* error # return */
	int	i_errcnt;	/* error count for driver retries */
	int	i_errblk;	/* block # in error for error reporting */
	char	i_buf[MAXBSIZE];/* i/o buffer */
	union {
		struct fs ui_fs;	/* file system super block info */
		char dummy[SBSIZE];
	} i_un;
};
#define i_fs i_un.ui_fs
#define NULL 0

#define F_READ		0x1	/* file opened for reading */
#define F_WRITE		0x2	/* file opened for writing */
#define F_ALLOC		0x4	/* buffer allocated */
#define F_FILE		0x8	/* file instead of device */
#define F_NBSF		0x10	/* no bad sector forwarding */
#define F_ECCLM		0x20	/* limit # of bits in ecc correction */
#define F_SSI		0x40	/* set skip sector inhibit */
/* io types */
#define	F_RDDATA	0x0100	/* read data */
#define	F_WRDATA	0x0200	/* write data */
#define F_HDR		0x0400	/* include header on next i/o */
#define F_CHECK		0x0800	/* perform check of data read/write */
#define F_HCHECK	0x1000	/* perform check of header and data */

#define	F_TYPEMASK	0xff00

/*
 * Device switch.
 */
struct devsw {
	char	*dv_name;
	int	(*dv_strategy)();
	int	(*dv_open)();
	int	(*dv_close)();
	int	(*dv_ioctl)();
};

struct devsw devsw[];

/*
 * Drive description table.
 * Returned from SAIODEVDATA call.
 */
struct st {
	short	nsect;		/* # sectors/track */
	short	ntrak;		/* # tracks/surfaces/heads */
	short	nspc;		/* # sectors/cylinder */
	short	ncyl;		/* # cylinders */
	short	*off;		/* partition offset table (cylinders) */
};

/*
 * Request codes. Must be the same a F_XXX above
 */
#define	READ	1
#define	WRITE	2

#define	NBUFS	4

char	b[NBUFS][MAXBSIZE];
daddr_t	blknos[NBUFS];

#define	NFILES	4
struct	iob iob[NFILES];

extern	int errno;	/* just like unix */

/* error codes */
#define	EBADF	1	/* bad file descriptor */
#define	EOFFSET	2	/* relative seek not supported */
#define	EDEV	3	/* improper device specification on open */
#define	ENXIO	4	/* unknown device specified */
#define	EUNIT	5	/* improper unit specification */
#define	ESRCH	6	/* directory search for file failed */
#define	EIO	7	/* generic error */
#define	ECMD	10	/* undefined driver command */
#define	EBSE	11	/* bad sector error */
#define	EWCK	12	/* write check error */
#define	EECC	13	/* uncorrectable ecc error */
#define	EHER	14	/* hard error */

/* ioctl's -- for disks just now */
#define	SAIOHDR		(('d'<<8)|1)	/* next i/o includes header */
#define	SAIOCHECK	(('d'<<8)|2)	/* next i/o checks data */
#define	SAIOHCHECK	(('d'<<8)|3)	/* next i/o checks header & data */
#define	SAIONOBAD	(('d'<<8)|4)	/* inhibit bad sector forwarding */
#define	SAIODOBAD	(('d'<<8)|5)	/* enable bad sector forwarding */
#define	SAIOECCLIM	(('d'<<8)|6)	/* limit ecc correction to 5 bits */
#define	SAIOECCUNL	(('d'<<8)|7)	/* use standard ecc procedures */
#define	SAIODEVDATA	(('d'<<8)|8)	/* get device data */
#define	SAIOSSI		(('d'<<8)|9)	/* set skip sector inhibit */
#define	SAIONOSSI	(('d'<<8)|10)	/* inhibit skip sector handling */
#define	SAIOSSDEV	(('d'<<8)|11)	/* is device skip sector type? */
#define	SAIODEBUG	(('d'<<8)|12)	/* enable/disable debugging */

/* codes for sector header word 1 */
#define	HDR1_FMT22	0x1000	/* standard 16 bit format */
#define	HDR1_OKSCT	0xc000	/* sector ok */
#define	HDR1_SSF	0x2000	/* skip sector flag */
Commit	Line	Data
	1	/* saio.h 4.14 %G% */
	2
	3	/*
	4	* Header file for standalone package
	5	*/
	6
	7	/*
	8	* Io block: includes an
	9	* inode, cells for the use of seek, etc,
	10	* and a buffer.
	11	*/
	12	struct iob {
	13	int i_flgs; /* see F_ below */
	14	struct inode i_ino; /* inode, if file */
	15	int i_unit; /* pseudo device unit */
	16	daddr_t i_boff; /* block offset on device */
	17	daddr_t i_cyloff; /* cylinder offset on device */
	18	off_t i_offset; /* seek offset in file */
	19	daddr_t i_bn; /* 1st block # of next read */
	20	char i_ma; / memory address of i/o buffer */
	21	int i_cc; /* character count of transfer */
	22	int i_error; /* error # return */
	23	int i_errcnt; /* error count for driver retries */
	24	int i_errblk; /* block # in error for error reporting */
	25	char i_buf[MAXBSIZE];/* i/o buffer */
	26	union {
	27	struct fs ui_fs; /* file system super block info */
	28	char dummy[SBSIZE];
	29	} i_un;
	30	};
	31	#define i_fs i_un.ui_fs
	32	#define NULL 0
	33
	34	#define F_READ 0x1 /* file opened for reading */
	35	#define F_WRITE 0x2 /* file opened for writing */
	36	#define F_ALLOC 0x4 /* buffer allocated */
	37	#define F_FILE 0x8 /* file instead of device */
	38	#define F_NBSF 0x10 /* no bad sector forwarding */
	39	#define F_ECCLM 0x20 /* limit # of bits in ecc correction */
	40	#define F_SSI 0x40 /* set skip sector inhibit */
	41	/* io types */
	42	#define F_RDDATA 0x0100 /* read data */
	43	#define F_WRDATA 0x0200 /* write data */
	44	#define F_HDR 0x0400 /* include header on next i/o */
	45	#define F_CHECK 0x0800 /* perform check of data read/write */
	46	#define F_HCHECK 0x1000 /* perform check of header and data */
	47
	48	#define F_TYPEMASK 0xff00
	49
	50	/*
	51	* Device switch.
	52	*/
	53	struct devsw {
	54	char *dv_name;
	55	int (*dv_strategy)();
	56	int (*dv_open)();
	57	int (*dv_close)();
	58	int (*dv_ioctl)();
	59	};
	60
	61	struct devsw devsw[];
	62
	63	/*
	64	* Drive description table.
	65	* Returned from SAIODEVDATA call.
	66	*/
	67	struct st {
	68	short nsect; /* # sectors/track */
	69	short ntrak; /* # tracks/surfaces/heads */
	70	short nspc; /* # sectors/cylinder */
	71	short ncyl; /* # cylinders */
	72	short off; / partition offset table (cylinders) */
	73	};
	74
	75	/*
	76	* Request codes. Must be the same a F_XXX above
	77	*/
	78	#define READ 1
	79	#define WRITE 2
	80
	81	#define NBUFS 4
	82
	83	char b[NBUFS][MAXBSIZE];
	84	daddr_t blknos[NBUFS];
	85
	86	#define NFILES 4
	87	struct iob iob[NFILES];
	88
	89	extern int errno; /* just like unix */
	90
	91	/* error codes */
	92	#define EBADF 1 /* bad file descriptor */
	93	#define EOFFSET 2 /* relative seek not supported */
	94	#define EDEV 3 /* improper device specification on open */
	95	#define ENXIO 4 /* unknown device specified */
	96	#define EUNIT 5 /* improper unit specification */
	97	#define ESRCH 6 /* directory search for file failed */
	98	#define EIO 7 /* generic error */
	99	#define ECMD 10 /* undefined driver command */
	100	#define EBSE 11 /* bad sector error */
	101	#define EWCK 12 /* write check error */
	102	#define EECC 13 /* uncorrectable ecc error */
	103	#define EHER 14 /* hard error */
	104
	105	/* ioctl's -- for disks just now */
	106	#define SAIOHDR (('d'<<8)\|1) /* next i/o includes header */
	107	#define SAIOCHECK (('d'<<8)\|2) /* next i/o checks data */
	108	#define SAIOHCHECK (('d'<<8)\|3) /* next i/o checks header & data */
	109	#define SAIONOBAD (('d'<<8)\|4) /* inhibit bad sector forwarding */
	110	#define SAIODOBAD (('d'<<8)\|5) /* enable bad sector forwarding */
	111	#define SAIOECCLIM (('d'<<8)\|6) /* limit ecc correction to 5 bits */
	112	#define SAIOECCUNL (('d'<<8)\|7) /* use standard ecc procedures */
	113	#define SAIODEVDATA (('d'<<8)\|8) /* get device data */
	114	#define SAIOSSI (('d'<<8)\|9) /* set skip sector inhibit */
	115	#define SAIONOSSI (('d'<<8)\|10) /* inhibit skip sector handling */
	116	#define SAIOSSDEV (('d'<<8)\|11) /* is device skip sector type? */
	117	#define SAIODEBUG (('d'<<8)\|12) /* enable/disable debugging */
	118
	119	/* codes for sector header word 1 */
	120	#define HDR1_FMT22 0x1000 /* standard 16 bit format */
	121	#define HDR1_OKSCT 0xc000 /* sector ok */
	122	#define HDR1_SSF 0x2000 /* skip sector flag */