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Diffstat (limited to 'include/linux/mtio.h')
| -rw-r--r-- | include/linux/mtio.h | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/include/linux/mtio.h b/include/linux/mtio.h new file mode 100644 index 000000000000..8c66151821e3 --- /dev/null +++ b/include/linux/mtio.h @@ -0,0 +1,351 @@ +/* + * 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> +#include <linux/qic117.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 */ + +/* 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 + +struct mt_tape_info { + long 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_ISONSTREAM_SC, "OnStream SC-, DI-, DP-, or USB tape drive"}, \ + {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 mt_blkno; /* current block number */ +}; + + +/* structure for MTIOCVOLINFO, query information about the volume + * currently positioned at (zftape) + */ +struct mtvolinfo { + unsigned int mt_volno; /* vol-number */ + unsigned int mt_blksz; /* blocksize used when recording */ + unsigned int mt_rawsize; /* raw tape space consumed, in kb */ + unsigned int mt_size; /* volume size after decompression, in kb */ + unsigned int mt_cmpr:1; /* this volume has been compressed */ +}; + +/* raw access to a floppy drive, read and write an arbitrary segment. + * For ftape/zftape to support formatting etc. + */ +#define MT_FT_RD_SINGLE 0 +#define MT_FT_RD_AHEAD 1 +#define MT_FT_WR_ASYNC 0 /* start tape only when all buffers are full */ +#define MT_FT_WR_MULTI 1 /* start tape, continue until buffers are empty */ +#define MT_FT_WR_SINGLE 2 /* write a single segment and stop afterwards */ +#define MT_FT_WR_DELETE 3 /* write deleted data marks, one segment at time */ + +struct mtftseg +{ + unsigned mt_segno; /* the segment to read or write */ + unsigned mt_mode; /* modes for read/write (sync/async etc.) */ + int mt_result; /* result of r/w request, not of the ioctl */ + void __user *mt_data; /* User space buffer: must be 29kb */ +}; + +/* get tape capacity (ftape/zftape) + */ +struct mttapesize { + unsigned long mt_capacity; /* entire, uncompressed capacity + * of a cartridge + */ + unsigned long mt_used; /* what has been used so far, raw + * uncompressed amount + */ +}; + +/* possible values of the ftfmt_op field + */ +#define FTFMT_SET_PARMS 1 /* set software parms */ +#define FTFMT_GET_PARMS 2 /* get software parms */ +#define FTFMT_FORMAT_TRACK 3 /* start formatting a tape track */ +#define FTFMT_STATUS 4 /* monitor formatting a tape track */ +#define FTFMT_VERIFY 5 /* verify the given segment */ + +struct ftfmtparms { + unsigned char ft_qicstd; /* QIC-40/QIC-80/QIC-3010/QIC-3020 */ + unsigned char ft_fmtcode; /* Refer to the QIC specs */ + unsigned char ft_fhm; /* floppy head max */ + unsigned char ft_ftm; /* floppy track max */ + unsigned short ft_spt; /* segments per track */ + unsigned short ft_tpc; /* tracks per cartridge */ +}; + +struct ftfmttrack { + unsigned int ft_track; /* track to format */ + unsigned char ft_gap3; /* size of gap3, for FORMAT_TRK */ +}; + +struct ftfmtstatus { + unsigned int ft_segment; /* segment currently being formatted */ +}; + +struct ftfmtverify { + unsigned int ft_segment; /* segment to verify */ + unsigned long ft_bsm; /* bsm as result of VERIFY cmd */ +}; + +struct mtftformat { + unsigned int fmt_op; /* operation to perform */ + union fmt_arg { + struct ftfmtparms fmt_parms; /* format parameters */ + struct ftfmttrack fmt_track; /* ctrl while formatting */ + struct ftfmtstatus fmt_status; + struct ftfmtverify fmt_verify; /* for verifying */ + } fmt_arg; +}; + +struct mtftcmd { + unsigned int ft_wait_before; /* timeout to wait for drive to get ready + * before command is sent. Milliseconds + */ + qic117_cmd_t ft_cmd; /* command to send */ + unsigned char ft_parm_cnt; /* zero: no parm is sent. */ + unsigned char ft_parms[3]; /* parameter(s) to send to + * the drive. The parms are nibbles + * driver sends cmd + 2 step pulses */ + unsigned int ft_result_bits; /* if non zero, number of bits + * returned by the tape drive + */ + unsigned int ft_result; /* the result returned by the tape drive*/ + unsigned int ft_wait_after; /* timeout to wait for drive to get ready + * after command is sent. 0: don't wait */ + int ft_status; /* status returned by ready wait + * undefined if timeout was 0. + */ + int ft_error; /* error code if error status was set by + * command + */ +}; + +/* 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 */ + +/* 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 */ + +/* the next six are used by the floppy ftape drivers and its frontends + * sorry, but MTIOCTOP commands are write only. + */ +#define MTIOCRDFTSEG _IOWR('m', 6, struct mtftseg) /* read a segment */ +#define MTIOCWRFTSEG _IOWR('m', 7, struct mtftseg) /* write a segment */ +#define MTIOCVOLINFO _IOR('m', 8, struct mtvolinfo) /* info about volume */ +#define MTIOCGETSIZE _IOR('m', 9, struct mttapesize)/* get cartridge size*/ +#define MTIOCFTFORMAT _IOWR('m', 10, struct mtftformat) /* format ftape */ +#define MTIOCFTCMD _IOWR('m', 11, struct mtftcmd) /* send QIC-117 cmd */ + +/* 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 + +/* 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 */ |