Initial Import from SVN

sys/include/mtio.h

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *	@(#)mtio.h	7.1.2 (2.11BSD) 1998/3/7
+ */
+
+/*
+ * Structures and definitions for mag tape io control commands
+ */
+
+/* structure for MTIOCTOP - mag tape op command */
+struct	mtop	{
+	short	mt_op;		/* operations defined below */
+	daddr_t	mt_count;	/* how many of them */
+};
+
+/* operations */
+#define MTWEOF	0	/* write an end-of-file record */
+#define MTFSF	1	/* forward space file */
+#define MTBSF	2	/* backward space file */
+#define MTFSR	3	/* forward space record */
+#define MTBSR	4	/* backward space record */
+#define MTREW	5	/* rewind */
+#define MTOFFL	6	/* rewind and put the drive offline */
+#define MTNOP	7	/* no operation, sets status only */
+#define MTCACHE	8	/* enable controller cache */
+#define MTNOCACHE 9	/* disable controller cache */
+#define	MTFLUSH	10	/* flush cache */
+
+/* structure for MTIOCGET - mag tape get status command */
+
+struct	mtget	{
+	short	mt_type;	/* type of magtape device */
+/* the following two registers are grossly device dependent */
+	short	mt_dsreg;	/* ``drive status'' register */
+	short	mt_erreg;	/* ``error'' register */
+/* end device-dependent registers */
+	short	mt_resid;	/* residual count */
+/* the following two are not yet implemented */
+	daddr_t	mt_fileno;	/* file number of current position */
+	daddr_t	mt_blkno;	/* block number of current position */
+/* end not yet implemented */
+};
+
+/*
+ * Constants for mt_type byte.  These are the same
+ * for other controllers compatible with the types listed.
+ */
+#define	MT_ISTS		0x01		/* TS-11 */
+#define	MT_ISHT		0x02		/* TM03 Massbus: TE16, TU45, TU77 */
+#define	MT_ISTM		0x03		/* TM11/TE10 Unibus */
+#define	MT_ISMT		0x04		/* TM78/TU78 Massbus */
+#define	MT_ISUT		0x05		/* SI TU-45 emulation on Unibus */
+#define	MT_ISCPC	0x06		/* SUN */
+#define	MT_ISAR		0x07		/* SUN */
+#define	MT_ISTMSCP	0x08		/* DEC TMSCP protocol (TU81, TK50) */
+
+/*
+ * At present only the TMSCP driver reports this information in the
+ * high byte of the 'drive status' word.  Other drives will (hopefully)
+ * be updated in the future.
+*/
+#define	MTF_BOM		0x01		/* At beginning of media */
+#define	MTF_EOM		0x02		/* At the end of media */
+#define	MTF_OFFLINE	0x04		/* Drive is offline */
+#define	MTF_WRTLCK	0x08		/* Drive is write protected */
+#define	MTF_WRITTEN	0x10		/* Tape has been written */
+
+/* mag tape io control commands */
+#define	MTIOCTOP	_IOW('m', 1, struct mtop)	/* do a mag tape op */
+#define	MTIOCGET	_IOR('m', 2, struct mtget)	/* get tape status */
+#define MTIOCIEOT	_IO ('m', 3)			/* ignore EOT error */
+#define MTIOCEEOT	_IO ('m', 4)			/* enable EOT error */
+
+#ifndef KERNEL
+#define	DEFTAPE	"/dev/rmt8"
+#define	MT_DEF	"/dev/nrmt8"
+#endif