File: [Development] / xfs-cmds / xfsdump / common / ts_mtio.h (download)
Revision 1.1, Mon Mar 17 19:35:42 2003 UTC (14 years, 7 months ago) by alkirkco
Branch: MAIN
Undoes mod: xfs-cmds:slinx:141863a
All of the SGI tape applications (TMF, DMF, OpenVault, and
tape tests) currently use the TS tape driver. This mod adds
initial support for xfsdump to also use the TS tape driver.
|
#ifndef __SYS_MTIO_H__
#define __SYS_MTIO_H__
#include <linux/mtio.h>
#ifndef __KERNEL__
#include <stdint.h>
#ifndef _UCHAR_T_DEFINED
typedef unsigned char uchar_t;
#define _UCHAR_T_DEFINED 1
#endif
typedef unsigned int uint_t;
#endif /* __KERNEL */
typedef unsigned int major_t;
typedef unsigned int minor_t;
#define TAPEPATH "/dev/ts"
#ifndef _BITS_TYPES_H
#endif /* _BITS_TYPES_H */
#define NBPSCTR 512 /* Bytes per sector from irix/kern/sys/param.h */
#define SCTRSHFT 9 /* Shift for BPSECT from irix/kern/sys/param.h */
/*
* TS supports the following MTIOCTOP subcodes. These subcode
* have been defined in linux/mtio.h and are supported in ST as well.
* See linux/mtio.h for details.
*
* operations (mt_op values for MTIOCTOP)
*
* #define MTFSF 1 forward space file
* #define MTBSF 2 backward space file
* #define MTFSR 3 forward space record
* #define MTBSR 4 backward space record
* #define MTWEOF 5 write an end-of-file record
* #define MTREW 6 rewind
* #define MTOFFL 7 rewind and put the drive offline
* #define MTNOP 8 no operation, sets status only
* #define MTRETEN 9 retention operation
* #define MTEOM 12 space to end of recorded data
* #define MTERASE 13 erase tape from current position to EOT
* #define MTSETBLK 20 set block length
* #define MTSEEK 22 Seek to the given block number. Not all
* drives support this option. For drives
* that support audio, the block number
* actually becomes the program number ( 0
* meaning leadin area, 0xfffffffe meaning
* leadout, and other values (currently 1-
* 799 decimal) the program #). For seeking
* to times in audio mode, see MTSETAUDIO.
* #define MTWSM 27 write mt_count setmarks (DAT)
* #define MTUNLOAD 31 unload tape from drive
* #define MTSETPART 33 skip to partition in mt_count (DAT); for
* DDS format DAT drives (only ones
* supported current), partition 1 is the
* first partition on the tape (nearest
* BOT), and partition 0 is the remainder of
* the tape.
* #define MTMKPART 34 create partition (DAT), count is
* multiplied by 1 Mybte (2^20 bytes) to
* give the size of partition 1; if 0, then
* changes tape to a single partition
* tape.
*
*/
#define MTRET MTRETEN /* retention operation */
#define MTRSV 0x7000 /* Issue a unit reserve command */
#define MTRLS 0x7001 /* Issue a unit release command */
#define MTPREEMPT 0x7002 /* Preempt active persistent reservation */
#define MTCLEAR 0x7003 /* Clear persistent reservation and keys */
#define MTAFILE 0x7004 /* space to end of last file before FM (so
* next data written is appended) */
#define MTSKSM 0x7005 /* skip setmark (DAT); skip backwards if mt_
* count is negative */
#define MTAUD 0x7006 /* turn audio mode on and off. If count is
* 0, we are in data mode (default), if 1,
* put drive in audio mode. This is only
* needed for writing tapes, since when
* reading the tape type (data or audio) is
* recognized automaticly. (DAT only for
* now). Remains set until same ioctl is
* reused, or until reboot. */
/* MTSPECOP - special drive specific operations.
* These use the mtop structure.
* MTSPECOP subcodes start at 0x6000.
*/
#define MTSCSI_CIPHER_SEC_ON 0x6001 /* enable reporting of recovered
* errors on the Cipher 540S */
#define MTSCSI_CIPHER_SEC_OFF 0x6002 /* disable recovered error report */
/* These are meaningful only for Exabyte. Default is to return
errors if read length is less than the block length */
#define MTSCSI_SILI 0x6003 /* suppress illegal length indication */
#define MTSCSI_EILI 0x6004 /* enable illegal length indication.
* currently implemented only for
* SCSI tape driver */
#define MTSCSI_SETFIXED 0x6005 /* set size of blocks for fixed
* block device in mt_count. Lasts
* till reset same way, or till next
* boot. */
#define MTSCSI_SPEED 0x6006 /* set speed for multispeed devices
* in mt_count. Current legal
* values are 0 (50 ips) and 1 (100
* ips) on Kennedy drives only.
* Default is currently 100. */
#define MTSCSI_SM 0x6007 /* How DAT setmarks are handled.
* default is to treat similar to
* FM (also if non-zero in mt_
* count). 0 in mt_count causes
* setmarks to be ignored. Lasts
* until reboot or reset. */
#define MTSCSI_LOG_OFF 0x6008 /* Disable sense data logging */
#define MTSCSI_LOG_ON 0x6009 /* Enable sense data logging */
#define ABI_MTIOCTOP (('t' << 8) | 9)
#define ABI_MTWEOF 0 /* same as MTWEOF */
#define ABI_MTFSF 1 /* same as MTFSF */
#define ABI_MTBSF 2 /* same as MTBSF */
#define ABI_MTFSR 3 /* same as MTFSR */
#define ABI_MTBSR 4 /* same as MTBSR */
#define ABI_MTREW 5 /* same as MTREW */
#define ABI_MTOFFL 6 /* same as MTOFFL */
/* structure for MTIOCGET_SGI - mag tape get status command; note that
* in audio mode, the blkno is actually the program number; see
* also the MTGETAUDIO ioctl and structure. For the 3 special
* position in audio mode (leadin, leadout, and unknown), the
* low nibbles are replicated, so they don't match valid program
* numbers (which are 1-799 decimal), giving values of 0xBBB, 0xEEE,
* and 0xAAA, respectively.
*/
struct mtget_sgi {
short mt_type; /* type of magtape device */
unsigned short mt_dposn; /* status of tape position (see below)*/
/* the following two registers are device dependent */
unsigned short mt_dsreg; /* ``drive status'' register */
short mt_erreg; /* ``error'' register */
short mt_resid; /* residual count; for SCSI, this is
* used to report the current partition
* # for DAT tapes that are partitioned
*/
/* the following two are not yet fully implemented */
int mt_fileno; /* file number of current position */
int mt_blkno; /* block number of current position */
};
/* old mtget structure , still keep it around for compatibility reason */
/* the librmt and /etc/rmt code uses it */
struct old_mtget {
short mt_type; /* type of magtape device */
/* the following two registers are device dependent */
unsigned short mt_dsreg; /* ``drive status'' register */
short mt_erreg; /* ``error'' register */
short mt_resid; /* residual count */
/* the following two are not yet fully implemented */
int mt_fileno; /* file number of current position */
int mt_blkno; /* block number of current position */
};
/*
* Structure to get persistent reservation state
*/
struct mt_prsv {
int mt_flags; /* flags for per rsv state */
int mt_active_gen; /* generation of per rsv */
int mt_type; /* prsv type */
char mt_active_key[8]; /* active prsv key */
char mt_local_key[8]; /* key used by local host */
};
#define MT_PRSV_VALID_RSV 0x01 /* valid persistent rsv */
/* structure for MTIOCGETEXT
*
* mt_type Type of tape device
* mt_dposn Status of tape position. See below.
* mt_dsreg Drive status register. See below.
* mt_erreg Error registers. The error register bits for a SCSI
* device are defined in tpsc.h, the upper 16 bits of
* ct_state in word0, ct_state2 in word 1.
* resid Difference between what was requested and what has
* completed, in bytes or blocks depending on the command.
* fileno Not currently supported.
* blkno Block number (from device)
* partno Partition number.
* cblkno Block number calculated by driver, includes filemarks.
* lastreq Last device request made by user. See MTR_xxx request
* codes defined below.
* mt_ilimode 1 if ILI reporting is on, otherwise 0.
* mt_buffmmode 1 if filemarks are buffered, otherwise 0.
*/
typedef struct mtgetext {
short mt_type;
unsigned short mt_dposn; /* Status of tape position */
unsigned short mt_dsreg; /* Drive status register */
unsigned short mt_erreg[5]; /* Error registers */
int mt_resid; /* Residual count */
int mt_fileno; /* File number */
int mt_blkno; /* Block number (from device) */
int mt_partno; /* Partition number */
int mt_cblkno; /* Block number (calculated) */
int mt_lastreq; /* Last device request */
int mt_ilimode; /* State of ILI reporting mode */
int mt_buffmmode; /* State of buffered filemarks */
int mt_subtype; /* Device type */
uint_t mt_capability; /* Device capabilities (MTCAN*) */
int64_t mt_nreads; /* Bytes read since tape load */
int64_t mt_nwrites; /* Bytes written since tape load*/
int mt_future[2]; /* Future additions */
} mtgetext_t;
/*
* Structure for MTACCT
*
*/
typedef struct mtacct {
u_char mt_hinv; /* Tape type defined in invent.h */
uint_t mt_capability; /* Tape capabilities */
uint64_t mt_reads; /* read()s since boot time */
uint64_t mt_rbytes; /* bytes read since boot time */
uint64_t mt_writes; /* write()s since boot time */
uint64_t mt_wbytes; /* bytes written since boot time */
uint64_t mt_ioctls; /* ioctl()s since boot time */
uint64_t mt_reads_load; /* read()s at last load */
uint64_t mt_rbytes_load; /* bytes read at last load */
uint64_t mt_writes_load; /* write()s at last load */
uint64_t mt_wbytes_load; /* bytes written at last load */
uint64_t mt_ioctls_load; /* ioctl()s at last load */
uint64_t mt_future[16]; /* Future additions */
} mtacct_t;
#define MT_MAX_VID 6 /* Max characters in volume id sans null */
struct mtvid {
char vid[MT_MAX_VID+1];
};
/* structure for MTIOCGETBLKINFO - all quantities in bytes.
A value of 0 indicates no limit
When using the variable block size device, the lastread
field is determined by reading one block and then spacing
backwards, if no i/o has yet been done to this tape. Unlike
MTIOCGETBLKSIZE, all quantities are in bytes.
*/
struct mtblkinfo {
unsigned minblksz; /* minimum block size */
unsigned maxblksz; /* maximum block size */
unsigned curblksz; /* size of block at last i/o. For fixed
mode, all requests must be a multiple of this. */
unsigned recblksz; /* "recommended" size for i/o. Mostly
based on compatibility with earlier releases and/or
other vendors */
};
/* structure for MTSCSI_RDLOG
The fields in this structure reflect the values required in
the SCSI Log Sense command. See a product manual for an
explanation of the fields.
*/
#define MTSCSI_LOGLEN 4096
typedef struct mtscsi_rdlog {
uint mtppc : 1, /* Parameter pointer control */
mtsp : 1, /* Saving paramters */
mtpc : 2, /* Page control */
mtpage : 6; /* Page code of requested page */
unsigned short mtparam; /* Parameter pointer */
unsigned short mtlen; /* Size of buffer receiving log */
caddr_t mtarg; /* Buffer pointer */
} mtscsi_rdlog_t;
#if _KERNEL
typedef struct irix5_mtscsi_rdlog {
uint mtppc : 1, /* Parameter pointer control */
mtsp : 1, /* Saving paramters */
mtpc : 2, /* Page control */
mtpage : 6; /* Page code of requested page */
unsigned short mtparam; /* Parameter pointer */
unsigned short mtlen; /* Size of buffer receiving log */
app32_ptr_t mtarg; /* Buffer pointer */
} irix5_mtscsi_rdlog_t;
#endif /* _KERNEL */
/* structure and defines for MT[GS]ETAUDIO.
* When using SETAUDIO to locate to a particular point, the type
* should be set to one of the MTAUDPOSN_* values,
* and only the corresponding fields need be filled in. See the DAT
* audio spec for more detail on the definitions of the different times.
* There are 34 frames per second, legal values are 0 through 33. The
* maximum value for the hours field is 99 hours. Positioning commands
* return immediately (as does rewind) in audio mode, and requests for
* current position may be made while the positioning is in progress.
* Other commands will block while positioning is in progress.
* When known, all 4 of the positions are returned for GET (that is
* pnum1-index, and all 3 of the mtaudtime structures). The program
* must determine by looking for 0xA in both nibbles whether any particular
* field is valid.
*/
#define MTAUDPOSN_PROG 0 /* seek to program number */
#define MTAUDPOSN_ABS 1 /* seek to absolute time */
#define MTAUDPOSN_RUN 2 /* seek to running time */
#define MTAUDPOSN_PTIME 3 /* seek to program time (within program) */
/*
* all the times are BCD digits, for both SET and GET.
* a value of 0xA in BOTH nibbles, (i.e., not a valid BCD number)
* means that the field isn't valid.
*/
struct mtaudtimecode {
uchar_t hhi:4, hlo:4; /* hours */
uchar_t mhi:4, mlo:4; /* minutes */
uchar_t shi:4, slo:4; /* seconds */
uchar_t fhi:4, flo:4; /* frame # (finer grain than seconds) */
};
struct mtaudio {
uchar_t zero1:4, pno1:4; /* 3 BCD digits giving program number the zero */
uchar_t zero2:4, pno2:4; /* fields should always be 0, or 0xA, when the */
uchar_t zero3:4, pno3:4; /* pno field is also 0xA, indicating not valid */
uchar_t indexhi:4, index:4; /* index number within program; hi is the
most significant BCD digit, index the least. */
struct mtaudtimecode ptime; /* program time */
struct mtaudtimecode atime; /* absolute time */
struct mtaudtimecode rtime; /* running time */
uchar_t seektype; /* one of the MTAUDPOSN_* values */
uchar_t cfuture[11]; /* future expansion */
};
/* structure for MTCAPABILITY */
struct mt_capablity {
int mtsubtype; /* this is NOT the same as mt_type, this is
the actual tape type, from invent.h, such as 9track, or DAT;
otherwise it is difficult to associate a particular device
with its type from a program. */
uint_t mtcapablity; /* the MTCAN* bits */
uint_t mtfuture[8]; /* for future additions */
};
/* Constants for mt_type byte */
#define MT_ISSCSI 0x09 /* Western Digital SCSI controller */
/* values for mt_dposn; values chosen for compatiblity with
existing programs! Note that these bits and the gaps between
are also used in tpsc.h */
/* The expected relative behaviour of MT_EW, MT_EOT and MTANSI can be
described as follows.
- writing from BOT, with MTANSI disabled, when LEOT is encountered,
MT_EW and MT_EOT are set. If MTANSI is now enabled, MT_EOT will be
reset and writing will be permitted until PEOT is encountered,
whereupon MT_EOT will again be set and will remain so until the
tape is repositioned.
- reading from BOT, MT_EOT will be set when PEOT is
encountered. LEOT is not normally reported by the drive, and therefore
MT_EW will normally not be set, unless the drive supports the REW mode
bit. (few do)
*/
#define MT_EOT 0x01 /* tape is at end of media */
#define MT_BOT 0x02 /* tape is at beginning of media */
#define MT_WPROT 0x04 /* tape is write-protected */
#define MT_EW 0x08 /* hit early warning marker */
#define MT_ONL 0x40 /* drive is online */
#define MT_EOD 0x4000 /* tape is at end of data */
#define MT_FMK 0x8000 /* tape is at file mark */
#define MT_POSMSK 0xC04F /* mask for supported bits */
/*
* mt_dsreg bits which are not also mt_dposn values. MT_QIC24 and MTQIC120
* are set only for drives that support QIC150 as well as the older formats.
*/
#define MT_GETBLKLEN 0x0010 /* Request to determine block length pending */
#define MT_MOTION 0x0020 /* Command performed which (potentially) moves*/
/* the tape since last load or reset */
#define MT_QIC24 0x0080 /* QIC24 cartridge in drive */
#define MT_QIC120 0x0100 /* QIC120 cartridge in drive */
#define MT_OPEN 0x0200 /* Device is open */
#define MT_READ 0x0400 /* Last motion request is read */
#define MT_WRITE 0x0800 /* Last motion request is write */
#define MT_CHG 0x1000 /* Unit attention has occurred */
#define MT_DIDIO 0x2000 /* I/O or user requested tape motion command */
/* has successfully completed since open */
/* or space/rewind */
/*
* mt_erreg or mt_erreg[0] bits.
*/
#define MT_NEEDBOT 0x0001 /* Must position at BOT before I/O. */
#define MT_LOADED 0x0002 /* Tape is loaded */
#define MT_ANSI 0x0004 /* I/O permitted after EOT detected */
#define MT_SMK 0x0008 /* Drive is positioned at setmark */
#define MT_AUDIO 0x0010 /* Drive is in audio mode. Persists until */
/* reset, tape change, or reboot. */
#define MT_AUD_MED 0x0020 /* Drive media is in audio format */
#define MT_MULTPART 0x0040 /* Drive media is multi-partitioned */
#define MT_SEEKING 0x0080 /* Seek/rewind in immediate mode is pending */
#define MT_HITFMSHORT 0x0100 /* Fixed block I/O, hit FM and returned short */
/* non-zero count. Next read will return 0 */
#define MT_INCOMPAT_MEDIA 0x0200 /* Media is incompatible with drive */
#define MT_CLEANHEADS 0x0400 /* Drive needs cleaning */
#define MT_COMPRESS 0x0800 /* Drive in compress mode */
#define MT_RESERVED 0x1000 /* Persistent reserve placed on drive */
#define MT_MEDIA_ERR 0x4000 /* Media error has occurred */
/*
* mt_erreg[1] bits.
*/
#define MT_BAD_REQT 0x0001 /* Invalid request issued to device */
#define MT_LARGE_BLK 0x0002 /* Block size on tape larger than request size*/
#define MT_LOAD_ERR 0x0004 /* Load error */
#define MT_HWERR 0x0008 /* Hardware error */
#define MT_NOT_READY 0x0010 /* Device is not ready */
#define MT_BLKLEN 0x0020 /* Set block size differs from actual size */
#define MT_INV_POS 0x0040 /* Tape position has not been established */
#define MT_BLANK_TAPE 0x0080 /* Blank Tape detected */
/*
* mag tape io control commands
*
* Ioctls 1-10000 are reserved by the TS driver and personality
* daemons.
*
*/
#define MTPDTRACE 6000 /* From pd_ioctl.h */
#define MTIOCODE(x) ('t'<<8|(x))
#ifndef _LINUX_MTIO_H
#define MTIOCTOP MTIOCODE('a') /* perform tape op */
#endif /* _LINUX_MTIO_H */
#define MTIOCGET_SGI MTIOCODE('b') /* get tape status */
#define MTIOCGETBLKSIZE MTIOCODE('c') /* get tape block size
* in multiples of 512 bytes */
#define MTSCSIINQ MTIOCODE('d') /* return scsi inquiry info (
* scsi tape drives only!);
* 3rd arg is a ptr to a
* buffer of at least izeof(
* ct_g0inq_data_t) from
* tpsc.h */
#define MTSCSI_INQUIRY_LEN 82 /* length of inquiry data
* for scsi tapes */
#define MTSPECOP MTIOCODE('e') /* special drive specific ops */
#define MTIOCGETBLKINFO MTIOCODE('f') /* get tape block info */
#define MTANSI MTIOCODE('g') /* allows i/o past EOT mark
* to provide for ANSI 3.27
* labeling. Doesn't
* persist across opens. If
* used, standard SGI EOT
* handling for tar, bru,
* etc. won't work
* correctly. Currently
* implemented only on SCSI
* tape drives. An arg of 1
* enables, 0 disables.
* NOTE: when the EOT marker
* is encountered, the
* current i/o operation
* returns either a short
* count (if any i/o
* completed), or -1 (if no
* i/o completed); it is the
* programmers responsiblity
* to determine if EOT has
* been encountered by using
* MTIOCGET or logic
* internal to the program.
* This ioctl should be
* issued AFTER encountering
* EOT, if ANSI 3.27 EOT
* handling is desired.
* subsequent i/o's will
* then be allowed, and will
* return the count actually
* transferred, or -1 if the
* drive was unable to
* transfer any data. The
* standard calls for
* writing a FM before the
* label. If this isn't
* done, the drive may
* return label info as
* data. */
#define MTCAPABILITY MTIOCODE('h') /* returns drive type and
* capablities (MTCAN*).
* Currently implemented
* only for SCSI drives. See
* mt_capablity struct */
#define MTSETAUDIO MTIOCODE('i') /* sets audio position,
* etc. */
#define MTGETAUDIO MTIOCODE('j') /* returns info about
* position, etc. in audio
* mode */
#define MTABORT MTIOCODE('k') /* abort current tape
* operation, if any. Useful
* only with commands that
* run asynchronously to the
* caller, such as seek and
* rewind when in audio
* mode. */
#define MTALIAS MTIOCODE('l') /* for use by ioconfig in
* the hardware graph*/
#define MTSCSI_SENSE MTIOCODE('m') /* returns the data for the
* most recent request sense
* issued as the result of a
* scsi tape driver command
* that got a SCSI
* checkcondition. returns
* up to MTSCSI_SENSE_LEN
* bytes of data. The buffer
* supplied as the 3rd ioctl
* argument must be at least
* that large. The actual
* amount of data will
* usually be less. */
#define MTSCSI_SENSE_LEN 256 /* length of sense data
* returned by MTSCSI_SENSE
* ioctl. returned data
* must be examined for for
* actual valid length. */
#define MTILIMODE MTIOCODE('n') /* Set ILI mode */
#define MTIOCKGET MTIOCODE('o') /* CA UniCenter kernel call */
#define MTSCSI_RDLOG MTIOCODE('p') /* Return SCSI device log
* data */
#define MTIOCGETEXT MTIOCODE('q') /* Get extended tape status */
#define MTGETATTR MTIOCODE('r') /* Get tape device attributes */
#define MTBUFFMMODE MTIOCODE('s') /* Set Buffered filemark mode */
#define MTFPMESSAGE MTIOCODE('t') /* Write to diagnostic
* display (if supported) */
#define MTGETPOS MTIOCODE('u') /* Get vendor specific
* position */
#define MTSETPOS MTIOCODE('v') /* Set vendor specific
* position */
#define MTIOCGETEXTL MTIOCODE('w') /* Get last extended tape
* status */
#define MTACCT MTIOCODE('x') /* Return accounting data */
#define MTSETVID MTIOCODE('y') /* Set device volume id */
#define MTPRSV MTIOCODE('z') /* Get persistent reserve
* out key */
/* definitions for tape capablities. Only those that are not
* shared by all tape drives are shown. */
#define MTCAN_BSF 0x1 /* can backspace file */
#define MTCAN_BSR 0x2 /* can backspace record (block) */
#define MTCAN_APPEND 0x4 /* can append to existing tape files */
#define MTCAN_SETMK 0x8 /* can do setmarks */
#define MTCAN_PART 0x10 /* can do multiple partitions (DAT) */
#define MTCAN_PREV 0x20 /* can prevent/allow media removal */
#define MTCAN_SYNC 0x40 /* can do synchronous mode SCSI */
/* Note. If SPEOD are set, or just SPEOD is set,
* then a simple space to EOD is done; the combination
* of SPEOD and LEOD is meaningless, and is treated as SPEOD, when
* spacing, or as LEOD when closing; i.e., do NOT set both, or you
* will get inconsistent results.
* Some drives, such as the 8mm drive, have a drive detectible EOD,
* but don't support the space EOD command. For these drives,
* neither SPEOD nor LEOD should be set. We then fake it by looping
* on space record and space FM until we get a blank check or other
* indication of EOD. */
#define MTCAN_LEOD 0x80 /* Use a logical EOD (as opposed to an EOD
* detectable by the drive). Currently only 9-track drives.
* If set, it is assumed EOD is marked by 2 sequential filemarks.
* Setting this also implies causes two sequential FM's to be written
* on close, when writing. */
#define MTCAN_SPEOD 0x100 /* can execute the space EOD command. */
#define MTCAN_CHKRDY 0x200 /* can determine if a tape is present; some
* drives, such as Cipher540S return OK on a test unit ready even if
* no cartridge is present. */
#define MTCAN_VAR 0x400 /* can do variable block sizes */
#define MTCAN_SETSZ 0x800 /* can set fixed block size */
#define MTCAN_SETSP 0x1000 /* can set tape speed (some 9track) */
#define MTCAN_SETDEN 0x2000 /* can set tape density (some 9track) */
#define MTCAN_SILI 0x4000 /* can set suppress illegal length errors;
* only on drives that support variable block sizes */
#define MTCANT_RET 0x8000 /* some drives can't retension; the driver
* will do it's best by spacing to EOD and rewinding. */
#define MTCAN_AUDIO 0x10000 /* drive supports audio over the SCSI bus;
* only DAT at this time. The data is expected to be read
* or written in the standard DAT format, including subcodes.
* collection and gathering of subcodes is handled by the drive.
* all 7 subcodes follow the data, then the mainID.
* The drive reports/sets audio or data tapes via the density code
* in the modesense/select block descriptor. Actual data layout
* is as below:
* 5760 bytes of audio data (16 bits left, 16 bits right, repeat)
* 7 subcode packs of 8 bytes each
* 4 bytes of subid (4bits each of ctrlid, dataid, program # high
* nibble, # of valid pack items, progno # middle nibble, progno
* low nibble, 2 reserved nibbles)
* 2 bytes main id (2 bits each of fmtid, and id1 - id7)
*/
#define MTCAN_SEEK 0x20000 /* drive supports seeking to a particular
* block (or sometimes program # if AUDIO supported) */
#define MTCAN_CHTYPEANY 0x40000 /* drive can change density
and/or fixed to variable at any point (if it can change at all).
Otherwise it can change only at BOT */
#define MTCANT_IMM 0x80000 /* drive doesn't work correctly when
immediate mode rewind, etc. is enabled. Setting this bit
will disable immediate mode rewind on the drive, independent
of the setting of tpsc_immediate_rewind (in master.d/tpsc) */
#define MTCAN_COMPRESS 0x100000 /* drive supports compression */
#define MTCAN_BUFFM 0x200000 /* drive supports writing of
* buffered filemarks */
#define MTCAN_FASTSEEK 0x400000 /* Drive needs BT bit set in read position and
* locate commands for fast seeking. */
#define MTCANT_LOAD 0x800000 /* Do NOT issue SCSI LOAD command for this drive */
#define MTCAN_LDREW 0x1000000 /* Issue Rewind instead of Load command. Used
* in conjunction with MTCANT_LOAD. */
/*
* Definitions for MTGETATTR
*/
/* Definition of MTGETATTR return struct */
struct mt_attr {
char *ma_name;
char *ma_value;
int ma_vlen;
};
/* Definitions of attribute names */
#define MT_ATTR_NAME_REWIND "rewind"
#define MT_ATTR_NAME_VARIABLE "varblk"
#define MT_ATTR_NAME_SWAP "swap"
#define MT_ATTR_NAME_COMPRESS_DENS "compress"
#define MT_ATTR_NAME_DEVSCSI "devscsi"
/* (Some of the) Definitions of return values */
#define MT_ATTR_VALUE_TRUE "true"
#define MT_ATTR_VALUE_FALSE "false"
#define MT_ATTR_MAX_NAMELEN 32
#define MT_ATTR_MAX_VALLEN 256
/*
* Definitions for MTFPMESSAGE
*/
#define MT_FPMSG_MAX_MSGLEN 64
#define MT_FPMSG_IBM_MSGLEN 0x18
#define MT_FPMSG_DIANA_MSGLEN 0x11
/* Definition of MTFPMESSAGE struct */
struct mt_fpmsg {
int mm_mlen;
union {
char mm_msg[MT_FPMSG_MAX_MSGLEN]; /* Generic format */
struct { /* Format for IBM 3590 type*/
char display_type; /* Display Type: Set to 0x80 */
char msg_type:3, /* Message type: 0x00 = General
* Status message */
msg_cntrl:3, /* Message control:
0 = Display message 0
1 = Display message 1
2 = Flash message 0
3 = Flash message 1
4 = Alternate message 0 and 1
*/
rsvd1:2;
char rsvd2[4];
ushort msg_len; /* Message length:Set to 0x10 */
char msg1[8]; /* message 1 */
char msg2[8]; /* message 2 */
} ibm3590;
struct { /* Format for Fujitsu Diana 1,2,3 */
char display_mode:3,
display_len:1,
flash:1,
half_msg:1,
:1,
data_format:1;
char msg1[8];
char msg2[8];
} diana;
} u;
};
#define default_mm_msg u.mm_msg
#define ibm3590_display_type u.ibm3590.display_type
#define ibm3590_msg_type u.ibm3590.msg_type
#define ibm3590_msg_cntrl u.ibm3590.msg_cntrl
#define ibm3590_msg_len u.ibm3590.msg_len
#define ibm3590_msg1 u.ibm3590.msg1
#define ibm3590_msg2 u.ibm3590.msg2
#define diana_display_mode u.diana.display_mode
#define diana_display_len u.diana.display_len
#define diana_flash u.diana.flash
#define diana_half_msg u.diana.half_msg
#define diana_data_format u.diana.data_format
#define diana_msg1 u.diana.msg1
#define diana_msg2 u.diana.msg2
/* Definition of MTGETPOS/MTSETPOS structure */
#define MAX_VEND_POS_SIZE 256 /* Maximum vendor specific position
* data size. */
struct vendor_specific_pos
{
u_short position_type;/* Identifies which position type is required. */
short size; /* Number of bytes of position data. */
u_char pos[MAX_VEND_POS_SIZE];/*Generic vendor specific position data*/
};
/* Definition for vendor_specific_pos position_type. */
#define BLKPOSTYPE 0x1001 /* Ampex DST Block Position type. */
#define FSNPOSTYPE 0x1002 /* Ampex DST File Section Position type. */
#define DISPOSTYPE 0x1003 /* Ampex DIS Timecode Position type. */
/*
* Define user request codes. These values are returned in field lastreq
* of structure mtgetext_t.
*/
#define MTR_READ 1 /* Read */
#define MTR_WRITE 2 /* Write */
#define MTR_WFM 3 /* Write filemark(s) */
#define MTR_SRB 4 /* Skip records backward, position after FM */
#define MTR_SRF 5 /* Skip records forward, position after FM */
#define MTR_SFB 6 /* Skip filemarks backwards */
#define MTR_SFF 7 /* Skip filemarks forward */
#define MTR_SEOD 8 /* Space to the end of data */
#define MTR_SEOM 9 /* Space to the end of media */
#define MTR_FORMAT 10 /* Skip filemarkds forward */
#define MTR_PART 11 /* Position to a partition */
#define MTR_SSM 12 /* Skip setmarks */
#define MTR_WSM 13 /* Write setmarks */
#define MTR_MODEAUD 14 /* Enable or disable audio mode */
#define MTR_REW 15 /* Rewind */
#define MTR_ERASE 16 /* Erase from current pos to EOT*/
#define MTR_RETEN 17 /* Retension */
#define MTR_UNLOAD 18 /* Unload */
#define MTR_PABS 19 /* Position to an absolute pos */
#define MTR_PAUDIO 20 /* Audio position */
#define MTR_GAUDIO 21 /* Get audio position */
#define MTR_RDLOG 22 /* Read log */
#define MTR_ATTR 23 /* Set attribute */
#define MTR_SPOS 24 /* Set vendor specific position */
#define MTR_GPOS 25 /* Get vendor specific position */
#define MTR_RSV 26 /* Unit reserve */
#define MTR_RLS 27 /* Unit release */
#define MTR_PREEMPT 28
#define MTR_CLEAR 29
#define MTR_LOAD 30 /* Load */
#define MTR_SFBM 31 /* Skip filemarks backward, position at FM */
#define MTR_SFFM 32 /* Skip filemarks forward, position at FM */
#endif /* __SYS_MTIO_H__ */
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