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glibc/sysdeps/gnu/sys/mtio.h

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/* Structures and definitions for magnetic tape I/O control commands.
Copyright (C) 1996-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _SYS_MTIO_H
#define _SYS_MTIO_H 1
/* Get necessary definitions from system and kernel headers. */
#include <sys/types.h>
#include <sys/ioctl.h>
/* Structure for MTIOCTOP - magnetic tape operation command. */
struct mtop
{
short int mt_op; /* Operations defined below. */
int mt_count; /* How many of them. */
};
#define _IOT_mtop /* Hurd ioctl type field. */ \
_IOT (_IOTS (short), 1, _IOTS (int), 1, 0, 0)
/* Magnetic Tape operations [Not all operations supported by all drivers]. */
#define MTRESET 0 /* +reset drive in case of problems. */
#define MTFSF 1 /* Forward space over FileMark,
* position at first record of next file. */
#define MTBSF 2 /* Backward space FileMark (position before FM). */
#define MTFSR 3 /* Forward space record. */
#define MTBSR 4 /* Backward space record. */
#define MTWEOF 5 /* Write an end-of-file record (mark). */
#define MTREW 6 /* Rewind. */
#define MTOFFL 7 /* Rewind and put the drive offline (eject?). */
#define MTNOP 8 /* No op, set status only (read with MTIOCGET). */
#define MTRETEN 9 /* Retension tape. */
#define MTBSFM 10 /* +backward space FileMark, position at FM. */
#define MTFSFM 11 /* +forward space FileMark, position at FM. */
#define MTEOM 12 /* Goto end of recorded media (for appending files).
MTEOM positions after the last FM, ready for
appending another file. */
#define MTERASE 13 /* Erase tape -- be careful! */
#define MTRAS1 14 /* Run self test 1 (nondestructive). */
#define MTRAS2 15 /* Run self test 2 (destructive). */
#define MTRAS3 16 /* Reserved for self test 3. */
#define MTSETBLK 20 /* Set block length (SCSI). */
#define MTSETDENSITY 21 /* Set tape density (SCSI). */
#define MTSEEK 22 /* Seek to block (Tandberg, etc.). */
#define MTTELL 23 /* Tell block (Tandberg, etc.). */
#define MTSETDRVBUFFER 24 /* Set the drive buffering according to SCSI-2.
Ordinary buffered operation with code 1. */
#define MTFSS 25 /* Space forward over setmarks. */
#define MTBSS 26 /* Space backward over setmarks. */
#define MTWSM 27 /* Write setmarks. */
#define MTLOCK 28 /* Lock the drive door. */
#define MTUNLOCK 29 /* Unlock the drive door. */
#define MTLOAD 30 /* Execute the SCSI load command. */
#define MTUNLOAD 31 /* Execute the SCSI unload command. */
#define MTCOMPRESSION 32/* Control compression with SCSI mode page 15. */
#define MTSETPART 33 /* Change the active tape partition. */
#define MTMKPART 34 /* Format the tape with one or two partitions. */
/* structure for MTIOCGET - mag tape get status command */
struct mtget
{
long int mt_type; /* Type of magtape device. */
long int mt_resid; /* Residual count: (not sure)
number of bytes ignored, or
number of files not skipped, or
number of records not skipped. */
/* The following registers are device dependent. */
long int mt_dsreg; /* Status register. */
long int mt_gstat; /* Generic (device independent) status. */
long int mt_erreg; /* Error register. */
/* The next two fields are not always used. */
__daddr_t mt_fileno; /* Number of current file on tape. */
__daddr_t mt_blkno; /* Current block number. */
};
#define _IOT_mtget /* Hurd ioctl type field. */ \
_IOT (_IOTS (long), 7, 0, 0, 0, 0)
/* Constants for mt_type. Not all of these are supported, and
these are not all of the ones that are supported. */
#define MT_ISUNKNOWN 0x01
#define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer. */
#define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02. */
#define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02?. */
#define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?). */
#define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24. */
#define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02. */
#define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L. */
#define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L. */
#define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller. */
#define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features. */
#define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24. */
#define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive,
Teac DC-1 card (Wangtek type). */
#define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40). */
#define MT_ISDDS1 0x51 /* DDS device without partitions. */
#define MT_ISDDS2 0x52 /* DDS device with partitions. */
#define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit. */
#define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit. */
/* QIC-40/80/3010/3020 ftape supported drives.
20bit vendor ID + 0x800000 (see vendors.h in ftape distribution). */
#define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */
#define MT_ISFTAPE_FLAG 0x800000
struct mt_tape_info
{
long int t_type; /* Device type id (mt_type). */
char *t_name; /* Descriptive name. */
};
#define MT_TAPE_INFO \
{ \
{MT_ISUNKNOWN, "Unknown type of tape device"}, \
{MT_ISQIC02, "Generic QIC-02 tape streamer"}, \
{MT_ISWT5150, "Wangtek 5150, QIC-150"}, \
{MT_ISARCHIVE_5945L2, "Archive 5945L-2"}, \
{MT_ISCMSJ500, "CMS Jumbo 500"}, \
{MT_ISTDC3610, "Tandberg TDC 3610, QIC-24"}, \
{MT_ISARCHIVE_VP60I, "Archive VP60i, QIC-02"}, \
{MT_ISARCHIVE_2150L, "Archive Viper 2150L"}, \
{MT_ISARCHIVE_2060L, "Archive Viper 2060L"}, \
{MT_ISARCHIVESC499, "Archive SC-499 QIC-36 controller"}, \
{MT_ISQIC02_ALL_FEATURES, "Generic QIC-02 tape, all features"}, \
{MT_ISWT5099EEN24, "Wangtek 5099-een24, 60MB"}, \
{MT_ISTEAC_MT2ST, "Teac MT-2ST 155mb data cassette drive"}, \
{MT_ISEVEREX_FT40A, "Everex FT40A, QIC-40"}, \
{MT_ISSCSI1, "Generic SCSI-1 tape"}, \
{MT_ISSCSI2, "Generic SCSI-2 tape"}, \
{0, NULL} \
}
/* Structure for MTIOCPOS - mag tape get position command. */
struct mtpos
{
long int mt_blkno; /* Current block number. */
};
#define _IOT_mtpos /* Hurd ioctl type field. */ \
_IOT_SIMPLE (long)
/* Structure for MTIOCGETCONFIG/MTIOCSETCONFIG primarily intended
as an interim solution for QIC-02 until DDI is fully implemented. */
struct mtconfiginfo
{
long int mt_type; /* Drive type. */
long int ifc_type; /* Interface card type. */
unsigned short int irqnr; /* IRQ number to use. */
unsigned short int dmanr; /* DMA channel to use. */
unsigned short int port; /* IO port base address. */
unsigned long int debug; /* Debugging flags. */
unsigned have_dens:1;
unsigned have_bsf:1;
unsigned have_fsr:1;
unsigned have_bsr:1;
unsigned have_eod:1;
unsigned have_seek:1;
unsigned have_tell:1;
unsigned have_ras1:1;
unsigned have_ras2:1;
unsigned have_ras3:1;
unsigned have_qfa:1;
unsigned pad1:5;
char reserved[10];
};
#define _IOT_mtconfiginfo /* Hurd ioctl type field. */ \
_IOT (_IOTS (long), 2, _IOTS (short), 3, _IOTS (long), 1) /* XXX wrong */
/* Magnetic tape I/O 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 MTIOCPOS _IOR('m', 3, struct mtpos) /* Get tape position.*/
/* The next two are used by the QIC-02 driver for runtime reconfiguration.
See tpqic02.h for struct mtconfiginfo. */
#define MTIOCGETCONFIG _IOR('m', 4, struct mtconfiginfo) /* Get tape config.*/
#define MTIOCSETCONFIG _IOW('m', 5, struct mtconfiginfo) /* Set tape config.*/
/* Generic Mag Tape (device independent) status macros for examining
mt_gstat -- HP-UX compatible.
There is room for more generic status bits here, but I don't
know which of them are reserved. At least three or so should
be added to make this really useful. */
#define GMT_EOF(x) ((x) & 0x80000000)
#define GMT_BOT(x) ((x) & 0x40000000)
#define GMT_EOT(x) ((x) & 0x20000000)
#define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */
#define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */
#define GMT_WR_PROT(x) ((x) & 0x04000000)
/* #define GMT_ ? ((x) & 0x02000000) */
#define GMT_ONLINE(x) ((x) & 0x01000000)
#define GMT_D_6250(x) ((x) & 0x00800000)
#define GMT_D_1600(x) ((x) & 0x00400000)
#define GMT_D_800(x) ((x) & 0x00200000)
/* #define GMT_ ? ((x) & 0x00100000) */
/* #define GMT_ ? ((x) & 0x00080000) */
#define GMT_DR_OPEN(x) ((x) & 0x00040000) /* Door open (no tape). */
/* #define GMT_ ? ((x) & 0x00020000) */
#define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* Immediate report mode.*/
/* 16 generic status bits unused. */
/* SCSI-tape specific definitions. Bitfield shifts in the status */
#define MT_ST_BLKSIZE_SHIFT 0
#define MT_ST_BLKSIZE_MASK 0xffffff
#define MT_ST_DENSITY_SHIFT 24
#define MT_ST_DENSITY_MASK 0xff000000
#define MT_ST_SOFTERR_SHIFT 0
#define MT_ST_SOFTERR_MASK 0xffff
/* Bitfields for the MTSETDRVBUFFER ioctl. */
#define MT_ST_OPTIONS 0xf0000000
#define MT_ST_BOOLEANS 0x10000000
#define MT_ST_SETBOOLEANS 0x30000000
#define MT_ST_CLEARBOOLEANS 0x40000000
#define MT_ST_WRITE_THRESHOLD 0x20000000
#define MT_ST_DEF_BLKSIZE 0x50000000
#define MT_ST_DEF_OPTIONS 0x60000000
#define MT_ST_BUFFER_WRITES 0x1
#define MT_ST_ASYNC_WRITES 0x2
#define MT_ST_READ_AHEAD 0x4
#define MT_ST_DEBUGGING 0x8
#define MT_ST_TWO_FM 0x10
#define MT_ST_FAST_MTEOM 0x20
#define MT_ST_AUTO_LOCK 0x40
#define MT_ST_DEF_WRITES 0x80
#define MT_ST_CAN_BSR 0x100
#define MT_ST_NO_BLKLIMS 0x200
#define MT_ST_CAN_PARTITIONS 0x400
#define MT_ST_SCSI2LOGICAL 0x800
/* The mode parameters to be controlled. Parameter chosen with bits 20-28. */
#define MT_ST_CLEAR_DEFAULT 0xfffff
#define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)
#define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)
#define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)
/* The offset for the arguments for the special HP changer load command. */
#define MT_ST_HPLOADER_OFFSET 10000
/* Specify default tape device. */
#ifndef DEFTAPE
# define DEFTAPE "/dev/tape"
#endif
#endif /* mtio.h */
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