File: [Development] / xfs-cmds / xfsdump / common / ts_mtio.h (download)
Revision 1.2, Mon Mar 17 22:15:01 2003 UTC (14 years, 7 months ago) by nathans
Branch: MAIN
CVS Tags: XFS-1_3_0pre1, HEAD
Changes since 1.1: +8 -8
lines
Minor tweaks to Mandys ts driver changes.
Include sys/mtio.h rather than linux/mtio.h - we try to keep our use of
kernel headers in userspace to a minimum.
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#ifndef __TS_MTIO_H__
#define __TS_MTIO_H__
#include <sys/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 sys/mtio.h and are supported in ST as well.
* See sys/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 _SYS_MTIO_H
#define MTIOCTOP MTIOCODE('a') /* perform tape op */
#endif /* _SYS_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 /* __TS_MTIO_H__ */
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