/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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/*

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* linux/mtio.h header file for Linux. Written by H. Bergman

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*

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* Modified for special ioctls provided by zftape in September 1997

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* by C.-J. Heine.

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*/

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#ifndef _LINUX_MTIO_H

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#define _LINUX_MTIO_H

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#include <linux/types.h>

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#include <linux/ioctl.h>

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/*

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* Structures and definitions for mag tape io control commands

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*/

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/* structure for MTIOCTOP - mag tape op command */

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struct mtop {

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short mt_op; /* operations defined below */

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int mt_count; /* how many of them */

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};

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/* Magnetic Tape operations [Not all operations supported by all drivers]: */

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#define MTRESET 0 /* +reset drive in case of problems */

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#define MTFSF 1 /* forward space over FileMark,

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* position at first record of next file

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*/

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#define MTBSF 2 /* backward space FileMark (position before FM) */

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#define MTFSR 3 /* forward space record */

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#define MTBSR 4 /* backward space record */

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#define MTWEOF 5 /* write an end-of-file record (mark) */

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#define MTREW 6 /* rewind */

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#define MTOFFL 7 /* rewind and put the drive offline (eject?) */

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#define MTNOP 8 /* no op, set status only (read with MTIOCGET) */

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#define MTRETEN 9 /* retension tape */

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#define MTBSFM 10 /* +backward space FileMark, position at FM */

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#define MTFSFM 11 /* +forward space FileMark, position at FM */

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#define MTEOM 12 /* goto end of recorded media (for appending files).

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* MTEOM positions after the last FM, ready for

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* appending another file.

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*/

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#define MTERASE 13 /* erase tape -- be careful! */

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#define MTRAS1 14 /* run self test 1 (nondestructive) */

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#define MTRAS2 15 /* run self test 2 (destructive) */

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#define MTRAS3 16 /* reserved for self test 3 */

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#define MTSETBLK 20 /* set block length (SCSI) */

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#define MTSETDENSITY 21 /* set tape density (SCSI) */

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#define MTSEEK 22 /* seek to block (Tandberg, etc.) */

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#define MTTELL 23 /* tell block (Tandberg, etc.) */

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#define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */

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/* ordinary buffered operation with code 1 */

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#define MTFSS 25 /* space forward over setmarks */

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#define MTBSS 26 /* space backward over setmarks */

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#define MTWSM 27 /* write setmarks */

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#define MTLOCK 28 /* lock the drive door */

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#define MTUNLOCK 29 /* unlock the drive door */

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#define MTLOAD 30 /* execute the SCSI load command */

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#define MTUNLOAD 31 /* execute the SCSI unload command */

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#define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */

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#define MTSETPART 33 /* Change the active tape partition */

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#define MTMKPART 34 /* Format the tape with one or two partitions */

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#define MTWEOFI 35 /* write an end-of-file record (mark) in immediate mode */

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/* structure for MTIOCGET - mag tape get status command */

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struct mtget {

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long mt_type; /* type of magtape device */

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long mt_resid; /* residual count: (not sure)

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* number of bytes ignored, or

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* number of files not skipped, or

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* number of records not skipped.

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*/

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/* the following registers are device dependent */

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long mt_dsreg; /* status register */

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long mt_gstat; /* generic (device independent) status */

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long mt_erreg; /* error register */

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/* The next two fields are not always used */

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__kernel_daddr_t mt_fileno; /* number of current file on tape */

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__kernel_daddr_t mt_blkno; /* current block number */

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};

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/*

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* Constants for mt_type. Not all of these are supported,

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* and these are not all of the ones that are supported.

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*/

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#define MT_ISUNKNOWN 0x01

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#define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */

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#define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */

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#define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */

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#define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */

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#define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */

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#define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */

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#define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */

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#define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */

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#define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */

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#define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */

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#define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */

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#define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */

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#define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */

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#define MT_ISDDS1 0x51 /* DDS device without partitions */

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#define MT_ISDDS2 0x52 /* DDS device with partitions */

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#define MT_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0)

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and SCSI emulated (DI, DP, USB) */

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#define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */

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#define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */

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/* QIC-40/80/3010/3020 ftape supported drives.

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* 20bit vendor ID + 0x800000 (see ftape-vendors.h)

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*/

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#define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */

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#define MT_ISFTAPE_FLAG 0x800000

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/* structure for MTIOCPOS - mag tape get position command */

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struct mtpos {

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long mt_blkno; /* current block number */

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};

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/* mag tape io control commands */

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#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */

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#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */

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#define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */

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/* Generic Mag Tape (device independent) status macros for examining

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* mt_gstat -- HP-UX compatible.

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* There is room for more generic status bits here, but I don't

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* know which of them are reserved. At least three or so should

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* be added to make this really useful.

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*/

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#define GMT_EOF(x) ((x) & 0x80000000)

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#define GMT_BOT(x) ((x) & 0x40000000)

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#define GMT_EOT(x) ((x) & 0x20000000)

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#define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */

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#define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */

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#define GMT_WR_PROT(x) ((x) & 0x04000000)

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/* #define GMT_ ? ((x) & 0x02000000) */

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#define GMT_ONLINE(x) ((x) & 0x01000000)

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#define GMT_D_6250(x) ((x) & 0x00800000)

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#define GMT_D_1600(x) ((x) & 0x00400000)

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#define GMT_D_800(x) ((x) & 0x00200000)

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/* #define GMT_ ? ((x) & 0x00100000) */

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/* #define GMT_ ? ((x) & 0x00080000) */

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#define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */

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/* #define GMT_ ? ((x) & 0x00020000) */

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#define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */

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#define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */

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/* 15 generic status bits unused */

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/* SCSI-tape specific definitions */

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/* Bitfield shifts in the status */

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#define MT_ST_BLKSIZE_SHIFT 0

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#define MT_ST_BLKSIZE_MASK 0xffffff

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#define MT_ST_DENSITY_SHIFT 24

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#define MT_ST_DENSITY_MASK 0xff000000

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#define MT_ST_SOFTERR_SHIFT 0

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#define MT_ST_SOFTERR_MASK 0xffff

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/* Bitfields for the MTSETDRVBUFFER ioctl */

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#define MT_ST_OPTIONS 0xf0000000

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#define MT_ST_BOOLEANS 0x10000000

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#define MT_ST_SETBOOLEANS 0x30000000

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#define MT_ST_CLEARBOOLEANS 0x40000000

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#define MT_ST_WRITE_THRESHOLD 0x20000000

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#define MT_ST_DEF_BLKSIZE 0x50000000

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#define MT_ST_DEF_OPTIONS 0x60000000

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#define MT_ST_TIMEOUTS 0x70000000

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#define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000)

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#define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000)

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#define MT_ST_SET_CLN 0x80000000

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#define MT_ST_BUFFER_WRITES 0x1

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#define MT_ST_ASYNC_WRITES 0x2

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#define MT_ST_READ_AHEAD 0x4

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#define MT_ST_DEBUGGING 0x8

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#define MT_ST_TWO_FM 0x10

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#define MT_ST_FAST_MTEOM 0x20

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#define MT_ST_AUTO_LOCK 0x40

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#define MT_ST_DEF_WRITES 0x80

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#define MT_ST_CAN_BSR 0x100

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#define MT_ST_NO_BLKLIMS 0x200

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#define MT_ST_CAN_PARTITIONS 0x400

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#define MT_ST_SCSI2LOGICAL 0x800

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#define MT_ST_SYSV 0x1000

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#define MT_ST_NOWAIT 0x2000

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#define MT_ST_SILI 0x4000

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#define MT_ST_NOWAIT_EOF 0x8000

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/* The mode parameters to be controlled. Parameter chosen with bits 20-28 */

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#define MT_ST_CLEAR_DEFAULT 0xfffff

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#define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)

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#define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)

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#define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)

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/* The offset for the arguments for the special HP changer load command. */

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#define MT_ST_HPLOADER_OFFSET 10000

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#endif /* _LINUX_MTIO_H */

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