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Edit File: mtio.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * linux/mtio.h header file for Linux. Written by H. Bergman * * Modified for special ioctls provided by zftape in September 1997 * by C.-J. Heine. */ #ifndef _LINUX_MTIO_H #define _LINUX_MTIO_H #include <linux/types.h> #include <linux/ioctl.h> /* * Structures and definitions for mag tape io control commands */ /* structure for MTIOCTOP - mag tape op command */ struct mtop { short mt_op; /* operations defined below */ int mt_count; /* how many of them */ }; /* 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 */ #define MTWEOFI 35 /* write an end-of-file record (mark) in immediate mode */ /* structure for MTIOCGET - mag tape get status command */ struct mtget { long mt_type; /* type of magtape device */ long 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 mt_dsreg; /* status register */ long mt_gstat; /* generic (device independent) status */ long mt_erreg; /* error register */ /* The next two fields are not always used */ __kernel_daddr_t mt_fileno; /* number of current file on tape */ __kernel_daddr_t mt_blkno; /* current block number */ }; /* * 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_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0) and SCSI emulated (DI, DP, USB) */ #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 ftape-vendors.h) */ #define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */ #define MT_ISFTAPE_FLAG 0x800000 /* structure for MTIOCPOS - mag tape get position command */ struct mtpos { long mt_blkno; /* current block number */ }; /* 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 MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */ /* 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 */ #define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */ /* 15 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_TIMEOUTS 0x70000000 #define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000) #define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000) #define MT_ST_SET_CLN 0x80000000 #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 #define MT_ST_SYSV 0x1000 #define MT_ST_NOWAIT 0x2000 #define MT_ST_SILI 0x4000 #define MT_ST_NOWAIT_EOF 0x8000 /* 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 #endif /* _LINUX_MTIO_H */