include/linux/mtio.h - arm/linux-arm64-legacy - Git at Google

 /*
  * 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 */
	/*
	* 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 */