1/* 2 * linux/mtio.h header file for Linux. Written by H. Bergman 3 * 4 * Modified for special ioctls provided by zftape in September 1997 5 * by C.-J. Heine. 6 */ 7 8#ifndef _LINUX_MTIO_H 9#define _LINUX_MTIO_H 10 11#include <linux/types.h> 12#include <linux/ioctl.h> 13 14/* 15 * Structures and definitions for mag tape io control commands 16 */ 17 18/* structure for MTIOCTOP - mag tape op command */ 19struct mtop { 20 short mt_op; /* operations defined below */ 21 int mt_count; /* how many of them */ 22}; 23 24/* Magnetic Tape operations [Not all operations supported by all drivers]: */ 25#define MTRESET 0 /* +reset drive in case of problems */ 26#define MTFSF 1 /* forward space over FileMark, 27 * position at first record of next file 28 */ 29#define MTBSF 2 /* backward space FileMark (position before FM) */ 30#define MTFSR 3 /* forward space record */ 31#define MTBSR 4 /* backward space record */ 32#define MTWEOF 5 /* write an end-of-file record (mark) */ 33#define MTREW 6 /* rewind */ 34#define MTOFFL 7 /* rewind and put the drive offline (eject?) */ 35#define MTNOP 8 /* no op, set status only (read with MTIOCGET) */ 36#define MTRETEN 9 /* retension tape */ 37#define MTBSFM 10 /* +backward space FileMark, position at FM */ 38#define MTFSFM 11 /* +forward space FileMark, position at FM */ 39#define MTEOM 12 /* goto end of recorded media (for appending files). 40 * MTEOM positions after the last FM, ready for 41 * appending another file. 42 */ 43#define MTERASE 13 /* erase tape -- be careful! */ 44 45#define MTRAS1 14 /* run self test 1 (nondestructive) */ 46#define MTRAS2 15 /* run self test 2 (destructive) */ 47#define MTRAS3 16 /* reserved for self test 3 */ 48 49#define MTSETBLK 20 /* set block length (SCSI) */ 50#define MTSETDENSITY 21 /* set tape density (SCSI) */ 51#define MTSEEK 22 /* seek to block (Tandberg, etc.) */ 52#define MTTELL 23 /* tell block (Tandberg, etc.) */ 53#define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */ 54 /* ordinary buffered operation with code 1 */ 55#define MTFSS 25 /* space forward over setmarks */ 56#define MTBSS 26 /* space backward over setmarks */ 57#define MTWSM 27 /* write setmarks */ 58 59#define MTLOCK 28 /* lock the drive door */ 60#define MTUNLOCK 29 /* unlock the drive door */ 61#define MTLOAD 30 /* execute the SCSI load command */ 62#define MTUNLOAD 31 /* execute the SCSI unload command */ 63#define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */ 64#define MTSETPART 33 /* Change the active tape partition */ 65#define MTMKPART 34 /* Format the tape with one or two partitions */ 66#define MTWEOFI 35 /* write an end-of-file record (mark) in immediate mode */ 67 68/* structure for MTIOCGET - mag tape get status command */ 69 70struct mtget { 71 long mt_type; /* type of magtape device */ 72 long mt_resid; /* residual count: (not sure) 73 * number of bytes ignored, or 74 * number of files not skipped, or 75 * number of records not skipped. 76 */ 77 /* the following registers are device dependent */ 78 long mt_dsreg; /* status register */ 79 long mt_gstat; /* generic (device independent) status */ 80 long mt_erreg; /* error register */ 81 /* The next two fields are not always used */ 82 __kernel_daddr_t mt_fileno; /* number of current file on tape */ 83 __kernel_daddr_t mt_blkno; /* current block number */ 84}; 85 86 87 88/* 89 * Constants for mt_type. Not all of these are supported, 90 * and these are not all of the ones that are supported. 91 */ 92#define MT_ISUNKNOWN 0x01 93#define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */ 94#define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */ 95#define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */ 96#define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */ 97#define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */ 98#define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */ 99#define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */ 100#define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */ 101#define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */ 102#define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */ 103#define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */ 104#define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */ 105#define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */ 106#define MT_ISDDS1 0x51 /* DDS device without partitions */ 107#define MT_ISDDS2 0x52 /* DDS device with partitions */ 108#define MT_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0) 109 and SCSI emulated (DI, DP, USB) */ 110#define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */ 111#define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */ 112 113/* QIC-40/80/3010/3020 ftape supported drives. 114 * 20bit vendor ID + 0x800000 (see ftape-vendors.h) 115 */ 116#define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */ 117#define MT_ISFTAPE_FLAG 0x800000 118 119 120/* structure for MTIOCPOS - mag tape get position command */ 121 122struct mtpos { 123 long mt_blkno; /* current block number */ 124}; 125 126 127/* mag tape io control commands */ 128#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */ 129#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */ 130#define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */ 131 132 133/* Generic Mag Tape (device independent) status macros for examining 134 * mt_gstat -- HP-UX compatible. 135 * There is room for more generic status bits here, but I don't 136 * know which of them are reserved. At least three or so should 137 * be added to make this really useful. 138 */ 139#define GMT_EOF(x) ((x) & 0x80000000) 140#define GMT_BOT(x) ((x) & 0x40000000) 141#define GMT_EOT(x) ((x) & 0x20000000) 142#define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */ 143#define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */ 144#define GMT_WR_PROT(x) ((x) & 0x04000000) 145/* #define GMT_ ? ((x) & 0x02000000) */ 146#define GMT_ONLINE(x) ((x) & 0x01000000) 147#define GMT_D_6250(x) ((x) & 0x00800000) 148#define GMT_D_1600(x) ((x) & 0x00400000) 149#define GMT_D_800(x) ((x) & 0x00200000) 150/* #define GMT_ ? ((x) & 0x00100000) */ 151/* #define GMT_ ? ((x) & 0x00080000) */ 152#define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */ 153/* #define GMT_ ? ((x) & 0x00020000) */ 154#define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */ 155#define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */ 156/* 15 generic status bits unused */ 157 158 159/* SCSI-tape specific definitions */ 160/* Bitfield shifts in the status */ 161#define MT_ST_BLKSIZE_SHIFT 0 162#define MT_ST_BLKSIZE_MASK 0xffffff 163#define MT_ST_DENSITY_SHIFT 24 164#define MT_ST_DENSITY_MASK 0xff000000 165 166#define MT_ST_SOFTERR_SHIFT 0 167#define MT_ST_SOFTERR_MASK 0xffff 168 169/* Bitfields for the MTSETDRVBUFFER ioctl */ 170#define MT_ST_OPTIONS 0xf0000000 171#define MT_ST_BOOLEANS 0x10000000 172#define MT_ST_SETBOOLEANS 0x30000000 173#define MT_ST_CLEARBOOLEANS 0x40000000 174#define MT_ST_WRITE_THRESHOLD 0x20000000 175#define MT_ST_DEF_BLKSIZE 0x50000000 176#define MT_ST_DEF_OPTIONS 0x60000000 177#define MT_ST_TIMEOUTS 0x70000000 178#define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000) 179#define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000) 180#define MT_ST_SET_CLN 0x80000000 181 182#define MT_ST_BUFFER_WRITES 0x1 183#define MT_ST_ASYNC_WRITES 0x2 184#define MT_ST_READ_AHEAD 0x4 185#define MT_ST_DEBUGGING 0x8 186#define MT_ST_TWO_FM 0x10 187#define MT_ST_FAST_MTEOM 0x20 188#define MT_ST_AUTO_LOCK 0x40 189#define MT_ST_DEF_WRITES 0x80 190#define MT_ST_CAN_BSR 0x100 191#define MT_ST_NO_BLKLIMS 0x200 192#define MT_ST_CAN_PARTITIONS 0x400 193#define MT_ST_SCSI2LOGICAL 0x800 194#define MT_ST_SYSV 0x1000 195#define MT_ST_NOWAIT 0x2000 196#define MT_ST_SILI 0x4000 197#define MT_ST_NOWAIT_EOF 0x8000 198 199/* The mode parameters to be controlled. Parameter chosen with bits 20-28 */ 200#define MT_ST_CLEAR_DEFAULT 0xfffff 201#define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000) 202#define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000) 203#define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000) 204 205/* The offset for the arguments for the special HP changer load command. */ 206#define MT_ST_HPLOADER_OFFSET 10000 207 208#endif /* _LINUX_MTIO_H */ 209