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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/* 3 * linux/mtio.h header file for Linux. Written by H. Bergman4 *5 * Modified for special ioctls provided by zftape in September 19976 * by C.-J. Heine.7 */8 9#ifndef _LINUX_MTIO_H10#define _LINUX_MTIO_H11 12#include <linux/types.h>13#include <linux/ioctl.h>14 15/*16 * Structures and definitions for mag tape io control commands17 */18 19/* structure for MTIOCTOP - mag tape op command */20struct mtop {21 short mt_op; /* operations defined below */22 int mt_count; /* how many of them */23};24 25/* Magnetic Tape operations [Not all operations supported by all drivers]: */26#define MTRESET 0 /* +reset drive in case of problems */27#define MTFSF 1 /* forward space over FileMark,28 * position at first record of next file 29 */30#define MTBSF 2 /* backward space FileMark (position before FM) */31#define MTFSR 3 /* forward space record */32#define MTBSR 4 /* backward space record */33#define MTWEOF 5 /* write an end-of-file record (mark) */34#define MTREW 6 /* rewind */35#define MTOFFL 7 /* rewind and put the drive offline (eject?) */36#define MTNOP 8 /* no op, set status only (read with MTIOCGET) */37#define MTRETEN 9 /* retension tape */38#define MTBSFM 10 /* +backward space FileMark, position at FM */39#define MTFSFM 11 /* +forward space FileMark, position at FM */40#define MTEOM 12 /* goto end of recorded media (for appending files).41 * MTEOM positions after the last FM, ready for42 * appending another file.43 */44#define MTERASE 13 /* erase tape -- be careful! */45 46#define MTRAS1 14 /* run self test 1 (nondestructive) */47#define MTRAS2 15 /* run self test 2 (destructive) */48#define MTRAS3 16 /* reserved for self test 3 */49 50#define MTSETBLK 20 /* set block length (SCSI) */51#define MTSETDENSITY 21 /* set tape density (SCSI) */52#define MTSEEK 22 /* seek to block (Tandberg, etc.) */53#define MTTELL 23 /* tell block (Tandberg, etc.) */54#define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */55 /* ordinary buffered operation with code 1 */56#define MTFSS 25 /* space forward over setmarks */57#define MTBSS 26 /* space backward over setmarks */58#define MTWSM 27 /* write setmarks */59 60#define MTLOCK 28 /* lock the drive door */61#define MTUNLOCK 29 /* unlock the drive door */62#define MTLOAD 30 /* execute the SCSI load command */63#define MTUNLOAD 31 /* execute the SCSI unload command */64#define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */65#define MTSETPART 33 /* Change the active tape partition */66#define MTMKPART 34 /* Format the tape with one or two partitions */67#define MTWEOFI 35 /* write an end-of-file record (mark) in immediate mode */68 69/* structure for MTIOCGET - mag tape get status command */70 71struct mtget {72 long mt_type; /* type of magtape device */73 long mt_resid; /* residual count: (not sure)74 * number of bytes ignored, or75 * number of files not skipped, or76 * number of records not skipped.77 */78 /* the following registers are device dependent */79 long mt_dsreg; /* status register */80 long mt_gstat; /* generic (device independent) status */81 long mt_erreg; /* error register */82 /* The next two fields are not always used */83 __kernel_daddr_t mt_fileno; /* number of current file on tape */84 __kernel_daddr_t mt_blkno; /* current block number */85};86 87 88 89/*90 * Constants for mt_type. Not all of these are supported,91 * and these are not all of the ones that are supported.92 */93#define MT_ISUNKNOWN 0x0194#define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */95#define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */96#define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */97#define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */98#define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */99#define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */100#define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */101#define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */102#define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */103#define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */104#define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */105#define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */106#define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */107#define MT_ISDDS1 0x51 /* DDS device without partitions */108#define MT_ISDDS2 0x52 /* DDS device with partitions */109#define MT_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0)110 and SCSI emulated (DI, DP, USB) */111#define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */112#define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */113 114/* QIC-40/80/3010/3020 ftape supported drives.115 * 20bit vendor ID + 0x800000 (see ftape-vendors.h)116 */117#define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */118#define MT_ISFTAPE_FLAG 0x800000119 120 121/* structure for MTIOCPOS - mag tape get position command */122 123struct mtpos {124 long mt_blkno; /* current block number */125};126 127 128/* mag tape io control commands */129#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */130#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */131#define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */132 133 134/* Generic Mag Tape (device independent) status macros for examining135 * mt_gstat -- HP-UX compatible.136 * There is room for more generic status bits here, but I don't137 * know which of them are reserved. At least three or so should138 * be added to make this really useful.139 */140#define GMT_EOF(x) ((x) & 0x80000000)141#define GMT_BOT(x) ((x) & 0x40000000)142#define GMT_EOT(x) ((x) & 0x20000000)143#define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */144#define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */145#define GMT_WR_PROT(x) ((x) & 0x04000000)146/* #define GMT_ ? ((x) & 0x02000000) */147#define GMT_ONLINE(x) ((x) & 0x01000000)148#define GMT_D_6250(x) ((x) & 0x00800000)149#define GMT_D_1600(x) ((x) & 0x00400000)150#define GMT_D_800(x) ((x) & 0x00200000)151/* #define GMT_ ? ((x) & 0x00100000) */152/* #define GMT_ ? ((x) & 0x00080000) */153#define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */154/* #define GMT_ ? ((x) & 0x00020000) */155#define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */156#define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */157/* 15 generic status bits unused */158 159 160/* SCSI-tape specific definitions */161/* Bitfield shifts in the status */162#define MT_ST_BLKSIZE_SHIFT 0163#define MT_ST_BLKSIZE_MASK 0xffffff164#define MT_ST_DENSITY_SHIFT 24165#define MT_ST_DENSITY_MASK 0xff000000166 167#define MT_ST_SOFTERR_SHIFT 0168#define MT_ST_SOFTERR_MASK 0xffff169 170/* Bitfields for the MTSETDRVBUFFER ioctl */171#define MT_ST_OPTIONS 0xf0000000172#define MT_ST_BOOLEANS 0x10000000173#define MT_ST_SETBOOLEANS 0x30000000174#define MT_ST_CLEARBOOLEANS 0x40000000175#define MT_ST_WRITE_THRESHOLD 0x20000000176#define MT_ST_DEF_BLKSIZE 0x50000000177#define MT_ST_DEF_OPTIONS 0x60000000178#define MT_ST_TIMEOUTS 0x70000000179#define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000)180#define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000)181#define MT_ST_SET_CLN 0x80000000182 183#define MT_ST_BUFFER_WRITES 0x1184#define MT_ST_ASYNC_WRITES 0x2185#define MT_ST_READ_AHEAD 0x4186#define MT_ST_DEBUGGING 0x8187#define MT_ST_TWO_FM 0x10188#define MT_ST_FAST_MTEOM 0x20189#define MT_ST_AUTO_LOCK 0x40190#define MT_ST_DEF_WRITES 0x80191#define MT_ST_CAN_BSR 0x100192#define MT_ST_NO_BLKLIMS 0x200193#define MT_ST_CAN_PARTITIONS 0x400194#define MT_ST_SCSI2LOGICAL 0x800195#define MT_ST_SYSV 0x1000196#define MT_ST_NOWAIT 0x2000197#define MT_ST_SILI 0x4000198#define MT_ST_NOWAIT_EOF 0x8000199 200/* The mode parameters to be controlled. Parameter chosen with bits 20-28 */201#define MT_ST_CLEAR_DEFAULT 0xfffff202#define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)203#define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)204#define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)205 206/* The offset for the arguments for the special HP changer load command. */207#define MT_ST_HPLOADER_OFFSET 10000208 209#endif /* _LINUX_MTIO_H */210