[unix-history] / usr / src / sys / stand.att / saio.h

/*	saio.h	4.8	%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;
	struct	inode i_ino;
	int	i_unit;
	daddr_t	i_boff;
	daddr_t	i_cyloff;
	off_t	i_offset;
	daddr_t	i_bn;
	char	*i_ma;
	int	i_cc;
	int	i_error;
	int	i_errcnt;
	int	i_errblk;
	int	i_active;
	char	i_buf[MAXBSIZE];
	union {
		struct fs ui_fs;
		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 the number of bad bits accepted in ecc's */
/* 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

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

struct devsw devsw[];

/* 
 * device data structure,
 * used by the ioctl-command SAIODEVDATA ( for disks only)
 */

struct devdata {
	int	nsect;	/* number of sectors per track */
	int	ntrak;	/* number of tracks/surfaces/heads... */
	int	nspc;	/* number of sectors per cylinder */
	int	ncyl;	/* number of 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];

#define	PHYSUBA0	0x20006000
#define	PHYSMBA0	0x20010000
#define	PHYSMBA1	0x20012000
#define	PHYSUMEM	0x2013e000

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 EHER	13	/* hard error */
#define EECC	14	/* severe ecc error, sector recorded as bad*/

/* 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)	/* do bad sector forwarding */
#define	SAIOECCLIM	(('d'<<8)|6)	/* report sectors as bad if more than
					 * 5 bits are bad in ecc */
#define	SAIOECCUNL	(('d'<<8)|7)	/* use standard ecc procedures */
#define SAIODEVDATA	(('d'<<8)|8)	/* get device data */

/* codes for sector header word 1 */
#define HDR1_FMT22	0x1000	/* standard 16 bit format */
#define HDR1_OKSCT	0xc000	/* sector ok */
Commit	Line	Data
e184e531	1	/* saio.h 4.8 %G% */
96dca2cc BJ	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 {
0839bdeb	13	int i_flgs;
96dca2cc BJ	14	struct inode i_ino;
	15	int i_unit;
	16	daddr_t i_boff;
	17	daddr_t i_cyloff;
	18	off_t i_offset;
	19	daddr_t i_bn;
	20	char *i_ma;
	21	int i_cc;
0839bdeb SL	22	int i_error;
0839bdeb SL	23	int i_errcnt;
e184e531	24	int i_errblk;
0839bdeb	25	int i_active;
cb31612d KM	26	char i_buf[MAXBSIZE];
	27	union {
	28	struct fs ui_fs;
	29	char dummy[SBSIZE];
	30	} i_un;
96dca2cc	31	};
cb31612d	32	#define i_fs i_un.ui_fs
e184e531	33	#define NULL 0
96dca2cc	34
0839bdeb SL	35	#define F_READ 0x1 /* file opened for reading */
	36	#define F_WRITE 0x2 /* file opened for writing */
	37	#define F_ALLOC 0x4 /* buffer allocated */
	38	#define F_FILE 0x8 /* file instead of device */
e184e531 HS	39	#define F_NBSF 0x10 /* no bad sector forwarding */
e184e531 HS	40	#define F_ECCLM 0x20 /* limit the number of bad bits accepted in ecc's */
0839bdeb SL	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
96dca2cc BJ	49
	50	/*
	51	* dev switch
	52	*/
	53	struct devsw {
	54	char *dv_name;
	55	int (*dv_strategy)();
	56	int (*dv_open)();
	57	int (*dv_close)();
0839bdeb	58	int (*dv_ioctl)();
96dca2cc BJ	59	};
	60
	61	struct devsw devsw[];
	62
e184e531 HS	63	/*
	64	* device data structure,
	65	* used by the ioctl-command SAIODEVDATA ( for disks only)
	66	*/
	67
	68	struct devdata {
	69	int nsect; /* number of sectors per track */
	70	int ntrak; /* number of tracks/surfaces/heads... */
	71	int nspc; /* number of sectors per cylinder */
	72	int ncyl; /* number of cylinders */
	73	};
	74
96dca2cc BJ	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
cb31612d	83	char b[NBUFS][MAXBSIZE];
96dca2cc BJ	84	daddr_t blknos[NBUFS];
	85
	86	#define NFILES 4
	87	struct iob iob[NFILES];
3d2087b6 KM	88
	89	#define PHYSUBA0 0x20006000
	90	#define PHYSMBA0 0x20010000
	91	#define PHYSMBA1 0x20012000
	92	#define PHYSUMEM 0x2013e000
0839bdeb SL	93
	94	extern int errno; /* just like unix */
	95
	96	/* error codes */
	97	#define EBADF 1 /* bad file descriptor */
	98	#define EOFFSET 2 /* relative seek not supported */
	99	#define EDEV 3 /* improper device specification on open */
	100	#define ENXIO 4 /* unknown device specified */
	101	#define EUNIT 5 /* improper unit specification */
	102	#define ESRCH 6 /* directory search for file failed */
	103	#define EIO 7 /* generic error */
	104	#define ECMD 10 /* undefined driver command */
	105	#define EBSE 11 /* bad sector error */
	106	#define EWCK 12 /* write check error */
	107	#define EHER 13 /* hard error */
	108	#define EECC 14 /* severe ecc error, sector recorded as bad*/
	109
	110	/* ioctl's -- for disks just now */
e184e531	111	#define SAIOHDR (('d'<<8)\|1) /* next i/o includes header */
0839bdeb SL	112	#define SAIOCHECK (('d'<<8)\|2) /* next i/o checks data */
0839bdeb SL	113	#define SAIOHCHECK (('d'<<8)\|3) /* next i/o checks header & data */
e184e531 HS	114	#define SAIONOBAD (('d'<<8)\|4) /* inhibit bad sector forwarding */
	115	#define SAIODOBAD (('d'<<8)\|5) /* do bad sector forwarding */
	116	#define SAIOECCLIM (('d'<<8)\|6) /* report sectors as bad if more than
	117	* 5 bits are bad in ecc */
	118	#define SAIOECCUNL (('d'<<8)\|7) /* use standard ecc procedures */
	119	#define SAIODEVDATA (('d'<<8)\|8) /* get device data */
	120
	121	/* codes for sector header word 1 */
	122	#define HDR1_FMT22 0x1000 /* standard 16 bit format */
	123	#define HDR1_OKSCT 0xc000 /* sector ok */