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Length: 4054 (0xfd6)
Types: TextFile
Notes: UNIX file
Names: »gentape.h«
└─⟦5fb5a153b⟧ Bits:30004042/hpdd.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦5fb5a153b⟧ UNIX Filesystem
└─⟦this⟧ »hp/new/usr/include/sys/gentape.h«
/*
* Definitions for Generic Tape Driver
*/
/*
* Copyrighted as an unpublished work.
* (c) Copyright 1988 INTERACTIVE Systems Corporation
* All rights reserved.
*
* RESTRICTED RIGHTS
*
* These programs are supplied under a license. They may be used,
* disclosed, and/or copied only as permitted under such license
* agreement. Any copy must contain the above copyright notice and
* this restricted rights notice. Use, copying, and/or disclosure
* of the programs is strictly prohibited unless otherwise provided
* in the license agreement.
*/
#ident "@(#)gentape.h 1.1 - 88/07/28"
#define TAPE_MAJOR 41
/*
* The following definitions apply to the low-order 4 bits of the tape
* minor device numbers.
*/
#define TDEV_FLAGMASK 0x0f /* mask to get low-order 4 bits */
#define TDEV_REWIND 8 /* Device should be rewound on close */
/* If not set, close on write will write a */
/* filemark and leave the tape at that */
/* position. Close on read will forward- */
/* space to the next filemark. */
#define TDEV_IMMED 4 /* Tape motion commands should return */
/* immediately. If not set, IOCTL calls or */
/* closings will return AFTER any associated */
/* tape motion has completed */
#define TDEV_DENMASK 3 /* Mask for density code, as follows: */
/* CODE 9-TRK BPI CART */
#define TPDEN_DEFAULT 0 /* 0 <default> <default> */
#define TPDEN_LOW 1 /* 1 800 9-trk (60MB) */
#define TPDEN_MED 2 /* 2 1600 15-trk (125MB) */
#define TPDEN_HIGH 3 /* 3 6250 18-trk (150MB) */
/*
* NOTE: All the above values selected by the device code are DEFAULTS.
* They can be changed by IOCTL calls, below
*/
/*
* Tape IOCTL calls...
*/
#define TIOC ('T'<<8)
#define TC_SEOF (TIOC | 1) /* Seek to EOF (count arg) */
#define TC_REWIND (TIOC | 2) /* Rewind tape (no arg) */
#define TC_WFM (TIOC | 3) /* Write File Mark (count arg) */
#define TC_ERASE (TIOC | 4) /* Erase entire tape (no arg) */
#define TC_RETENSION (TIOC | 6) /* Retension tape (no arg) */
#define TC_WAIT (TIOC | 10) /* Wait for long-term op (no arg) */
/* Valid only after a long-term */
/* operation with TDEV_IMMED set */
#define TC_GETPARMS (TIOC | 11) /* Get tape parameters (arg below) */
/*
* Tape IOCTL argument block for TC_GETPARMS.
* Address of one of these is passed as ioctl arg and is filled with
* with values by TC_GETPARMS.
*
*/
struct tc_parms
{
ushort tcp_speed; /* Speed of tape device */
ushort tcp_flags; /* Tape Flags. Low 4 bits are same as for */
/* minor device codes above ('TDEV_*'). */
ushort tcp_spare; /* for future expansion */
ushort tcp_medtype; /* Cartridge medium type (GETPARMS only) */
ulong tcp_recsiz; /* Record size if fixed-size device, max */
/* record size if variable-size device */
};
/* values for tcp_speed field */
#define TCPS_DEFAULT 0 /* Default (SET) or unknown (GET) speed */
#define TCPS_LOW 1 /* Low speed */
#define TCPS_MED 2 /* Medium speed */
#define TCPS_HIGH 3 /* High speed */
/* value bits for tcp_flags (from dpb_drvflags) */
#define TCPF_DENMASK TDEV_DENMASK
#define TCPF_IMMED TDEV_IMMED
#define TCPF_REWIND TDEV_REWIND
#define TCPF_FIXED 0x10 /* Device uses fixed-size records (usually */
/* a cartridge tape) */
#define TCPF_LONGOP 0x20 /* A long-term operation is in progress */
#define TCPF_ATEOT 0x40 /* Tape is at End-of-Tape point */
#define TCPF_ATEOF 0x80 /* Tape is at End-of-File point */
#define TCPF_RDONLY 0x100 /* Tape is Read Only */
#define TCPF_IOCTL 0x2000 /* Last operation on the dev was IOCTL */
/* (As opposed to READ or WRITE) */
extern struct gdev_cfg_entry tape_cfg_tbl[];
extern ushort tape_cfg_entries;