* Written by Julian Elischer (julian@tfs.com)(now julian@DIALix.oz.au)
* for TRW Financial Systems for use under the MACH(2.5) operating system.
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
* PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
* -------------------- ----- ----------------------
* CURRENT PATCH LEVEL: 1 00098
* -------------------- ----- ----------------------
* 16 Feb 93 Julian Elischer ADDED for SCSI system
* 1.15 is the last verion to support MACH and OSF/1
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
* major changes by Julian Elischer (julian@jules.dialix.oz.au) May 1993
* $Id: st.c,v 1.8 1993/09/07 15:58:00 rgrimes Exp $
* work out some better way of guessing what a good timeout is going
* to be depending on whether we expect to retension or not.
#include <scsi/scsi_all.h>
#include <scsi/scsi_tape.h>
#include <scsi/scsiconf.h>
long int ststrats
,stqueues
;
/* Defines for device specific stuff */
#define PAGE_0_SENSE_DATA_SIZE 12
#define DEF_FIXED_BSIZE 512
#define MODE(z) ( (minor(z) & 0x03) )
#define DSTY(z) ( ((minor(z) >> 2) & 0x03) )
#define UNIT(z) ( (minor(z) >> 4) )
#define SCSI_2_MAX_DENSITY_CODE 0x17 /* maximum density code specified
/***************************************************************\
* Define various devices that we know mis-behave in some way, *
* and note how they are bad, so we can correct for them *
\***************************************************************/
int quirks
; /* same definitions as in rogues */
int quirks
; /* valid for all modes */
/* define behaviour codes (quirks) */
#define ST_Q_NEEDS_PAGE_0 0x00001
#define ST_Q_FORCE_FIXED_MODE 0x00002
#define ST_Q_FORCE_VAR_MODE 0x00004
#define ST_Q_SNS_HLP 0x00008 /* must do READ for good MODE SENSE */
#define ST_Q_IGNORE_LOADS 0x00010
#define ST_Q_BLKSIZ 0x00020 /* variable-block media_blksiz > 0 */
static struct rogues gallery
[] = /* ends with an all null entry */
{ "Such an old device ", "pre-scsi", " unknown model ","????",
{ {ST_Q_FORCE_FIXED_MODE
,0}, /* minor 0,1,2,3 */
{ST_Q_FORCE_FIXED_MODE
,QIC_24
}, /* minor 4,5,6,7 */
{ST_Q_FORCE_VAR_MODE
,HALFINCH_1600
}, /* minor 8,9,10,11*/
{ST_Q_FORCE_VAR_MODE
,HALFINCH_6250
} /* minor 12,13,14,15*/
{ "Tandberg tdc3600", "TANDBERG", " TDC 3600","????",
{ {0,0}, /* minor 0,1,2,3*/
{ST_Q_FORCE_VAR_MODE
,QIC_525
}, /* minor 4,5,6,7*/
{0,QIC_150
}, /* minor 8,9,10,11*/
{0,QIC_120
} /* minor 12,13,14,15*/
{ "Rev 5 of the Archive 2525", "ARCHIVE ", "VIPER 2525 25462","-005",
{ {ST_Q_SNS_HLP
,0}, /* minor 0,1,2,3*/
{ST_Q_SNS_HLP
,QIC_525
}, /* minor 4,5,6,7*/
{0,QIC_150
}, /* minor 8,9,10,11*/
{0,QIC_120
} /* minor 12,13,14,15*/
{ "Archive Viper 150", "ARCHIVE ", "VIPER 150","????",
{ {0,0}, /* minor 0,1,2,3*/
{0,QIC_150
}, /* minor 4,5,6,7*/
{0,QIC_120
}, /* minor 8,9,10,11*/
{0,QIC_24
} /* minor 12,13,14,15*/
{ "Wangtek 5525ES", "WANGTEK ", "5525ES SCSI REV7", "????",
{ {0,0}, /* minor 0,1,2,3*/
{ST_Q_BLKSIZ
,QIC_525
}, /* minor 4,5,6,7*/
{0,QIC_150
}, /* minor 8,9,10,11*/
{0,QIC_120
} /* minor 12,13,14,15*/
/*--------------------present operating parameters, flags etc.----------------*/
int flags
; /* see below */
int blksiz
; /* blksiz we are using */
int density
; /* present density */
int quirks
; /* quirks for the open mode */
int last_dsty
; /* last density used */
/*--------------------device/scsi parameters----------------------------------*/
struct scsi_switch
*sc_sw
; /* address of scsi low level switch */
int ctlr
; /* so they know which one we want */
int targ
; /* our scsi target ID */
int lu
; /* our scsi lu */
/*--------------------parameters reported by the device ----------------------*/
int blkmin
; /* min blk size */
int blkmax
; /* max blk size */
/*--------------------parameters reported by the device for this media--------*/
int numblks
; /* nominal blocks capacity */
int media_blksiz
; /* 0 if not ST_FIXEDBLOCKS */
int media_density
; /* this is what it said when asked */
/*--------------------quirks for the whole drive------------------------------*/
int drive_quirks
; /* quirks of this drive */
/*--------------------How we should set up when openning each minor device----*/
struct modes modes
[4]; /* plus more for each mode */
/*--------------------storage for sense data returned by the drive------------*/
unsigned char sense_data
[12]; /* additional sense data needed */
/* for mode sense/select. */
struct buf
*buf_queue
; /* the queue of pending IO operations */
struct scsi_xfer scsi_xfer
; /* The scsi xfer struct for this drive*/
int xfer_block_wait
; /* whether there is a process waiting */
#define ST_INITIALIZED 0x01
#define ST_INFO_VALID 0x02
#define ST_BLOCK_SET 0x08 /* block size, mode set by ioctl */
#define ST_WRITTEN 0x10 /* data have been written, EOD needed */
#define ST_FIXEDBLOCKS 0x20
#define ST_AT_FILEMARK 0x40
#define ST_EIO_PENDING 0x80 /* we couldn't report it then (had data)*/
#define ST_AT_BOM 0x100 /* ops history suggests Beg of Medium */
#define ST_READONLY 0x200 /* st_mode_sense says write protected */
#define ST_FM_WRITTEN 0x400 /* EOF file mark written -- */
/* used with ~ST_WRITTEN to indicate */
/* that multiple file marks have been */
#define ST_BLANK_READ 0x800 /* BLANK CHECK encountered already */
#define ST_2FM_AT_EOD 0x1000 /* write 2 file marks at EOD */
#define ST_PER_ACTION (ST_AT_FILEMARK | ST_EIO_PENDING | ST_BLANK_READ)
#define ST_PER_OPEN ST_OPEN
#define ST_PER_MEDIA (ST_INFO_VALID | ST_BLOCK_SET | ST_WRITTEN | \
ST_FIXEDBLOCKS | ST_AT_BOM | ST_READONLY | \
ST_FM_WRITTEN | ST_2FM_AT_EOD | ST_PER_ACTION)
static int next_st_unit
= 0;
/***********************************************************************\
* The routine called by the low level scsi routine when it discovers *
* A device suitable for this driver *
\***********************************************************************/
int stattach(ctlr
,targ
,lu
,scsi_switch
)
struct scsi_switch
*scsi_switch
;
if(scsi_debug
& PRINTROUTINES
) printf("stattach: ");
/*******************************************************\
* Check we have the resources for another drive *
\*******************************************************/
printf("Too many scsi tapes..(%d > %d) reconfigure kernel\n",
printf("st%d: Already has storage!\n",unit
);
st
= st_data
[unit
] = malloc(sizeof(struct st_data
),M_DEVBUF
,M_NOWAIT
);
printf("st%d: malloc failed in st.c\n",unit
);
bzero(st
,sizeof(struct st_data
));
/*******************************************************\
* Store information needed to contact our base driver *
\*******************************************************/
/*******************************************************\
* Store information about default densities *
\*******************************************************/
st
->modes
[DSTY1
].density
= QIC_525
;
st
->modes
[DSTY2
].density
= QIC_150
;
st
->modes
[DSTY3
].density
= QIC_120
;
/*******************************************************\
* Check if the drive is a known criminal and take *
* Any steps needed to bring it into line *
\*******************************************************/
/*******************************************************\
* Use the subdriver to request information regarding *
* the drive. We cannot use interrupts yet, so the *
* request must specify this. *
\*******************************************************/
if(st_mode_sense(unit
, SCSI_NOSLEEP
| SCSI_NOMASK
| SCSI_SILENT
))
printf("st%d: drive offline\n", unit
);
if(!st_test_ready(unit
,SCSI_NOSLEEP
| SCSI_NOMASK
| SCSI_SILENT
))
printf("st%d: density code 0x%x, ",
unit
, st
->media_density
);
printf("%d-byte", st
->media_blksiz
);
printf(" blocks, write-%s\n",
st
->flags
& ST_READONLY
? "protected" : "enabled");
printf("st%d: drive empty\n", unit
);
/*******************************************************\
* Set up the bufs for this device *
\*******************************************************/
st
->flags
|= ST_INITIALIZED
;
/***********************************************************************\
* Use the identify routine in 'scsiconf' to get drive info so we can *
* Further tailor our behaviour. *
\***********************************************************************/
struct st_data
*st
= st_data
[unit
];
struct scsi_inquiry_data inqbuf
;
/*******************************************************\
* Get the device type information *
\*******************************************************/
if (scsi_inquire(st
->ctlr
, st
->targ
, st
->lu
, st
->sc_sw
, &inqbuf
,
SCSI_NOSLEEP
| SCSI_NOMASK
| SCSI_SILENT
) != COMPLETE
)
printf("st%d: couldn't get device type, using default\n", unit
);
if((inqbuf
.version
& SID_ANSII
) == 0)
/***********************************************\
* If not advanced enough, use default values *
\***********************************************/
strncpy(manu
,"pre-scsi",8);manu
[8]=0;
strncpy(model
," unknown model ",16);model
[16]=0;
strncpy(version
,"????",4);version
[4]=0;
strncpy(manu
,inqbuf
.vendor
,8);manu
[8]=0;
strncpy(model
,inqbuf
.product
,16);model
[16]=0;
strncpy(version
,inqbuf
.revision
,4);version
[4]=0;
/*******************************************************\
* Load the parameters for this kind of device, so we *
* treat it as appropriate for each operating mode *
* Only check the number of characters in the array's *
* model entry, not the entire model string returned. *
\*******************************************************/
while(finger
->model
[model_len
] && (model_len
< 32))
model2
[model_len
] = model
[model_len
];
if ((strcmp(manu
, finger
->manu
) == 0 )
&& (strcmp(model2
, finger
->model
) == 0 ||
strcmp("????????????????", finger
->model
) == 0)
&& (strcmp(version
, finger
->version
) == 0 ||
strcmp("????", finger
->version
) == 0))
printf("st%d: %s is a known rogue\n", unit
,finger
->name
);
st
->modes
[0] = finger
->modes
[0];
st
->modes
[1] = finger
->modes
[1];
st
->modes
[2] = finger
->modes
[2];
st
->modes
[3] = finger
->modes
[3];
st
->drive_quirks
= finger
->quirks
;
st
->quirks
= finger
->quirks
; /*start value*/
finger
++; /* go to next suspect */
/*******************************************************\
\*******************************************************/
/*******************************************************\
* Check the unit is legal *
\*******************************************************/
/*******************************************************\
* Make sure the device has been initialised *
\*******************************************************/
if ((st
== NULL
) || (!(st
->flags
& ST_INITIALIZED
)))
/*******************************************************\
* Only allow one at a time *
\*******************************************************/
/*******************************************************\
* Throw out a dummy instruction to catch 'Unit attention*
* errors (the error handling will invalidate all our *
* device info if we get one, but otherwise, ignore it *
\*******************************************************/
st_test_ready(unit
, SCSI_SILENT
);
/***************************************************************\
* Check that the device is ready to use (media loaded?) *
* This time take notice of the return result *
\***************************************************************/
if(errno
= (st_test_ready(unit
,0)))
printf("st%d: not ready\n",unit
);
/*******************************************************\
* Set up the mode flags according to the minor number *
* ensure all open flags are in a known state *
* if it's a different mode, dump all cached parameters *
\*******************************************************/
if(st
->last_dsty
!= dsty
|| !(st
->flags
& ST_INFO_VALID
))
st
->flags
&= ~ST_INFO_VALID
;
st
->quirks
= st
->drive_quirks
| st
->modes
[dsty
].quirks
;
st
->density
= st
->modes
[dsty
].density
;
st
->flags
&= ~ST_PER_OPEN
;
if(scsi_debug
& (PRINTROUTINES
| TRACEOPENS
))
printf("stopen: dev=0x%x (unit %d (of %d))\n"
/***************************************************************\
* If the media is new, then make sure we give it a chance to *
* to do a 'load' instruction. *
\***************************************************************/
if(!(st
->flags
& ST_INFO_VALID
)) /* is media new? */
if(errno
= st_load(unit
,LD_LOAD
,0))
if(st
->quirks
& ST_Q_SNS_HLP
)
/***********************************************\
* The quirk here is that the drive returns some *
* value to st_mode_sense incorrectly until the *
* tape has actually passed by the head. *
* The method is to set the drive to large *
* fixed-block state (user-specified density and *
* 1024-byte blocks), then read and rewind to *
* get it to sense the tape. If that doesn't *
* work, try 512-byte fixed blocks. If that *
* doesn't work, as a last resort, try variable- *
* length blocks. The result will be the *
* ability to do an accurate st_mode_sense. *
* We pretend not to be at beginning of medium *
* to keep st_read from calling st_decide_mode. *
* We know we can do a rewind because we just *
* did a load, which implies rewind. Rewind *
* seems preferable to space backward if we have *
* The rest of the code for this quirk is in ILI *
* processing and BLANK CHECK error processing, *
* both part of st_interpret_sense. *
\***********************************************/
buf
= malloc(1024,M_TEMP
,M_NOWAIT
);
if (errno
= st_mode_sense(unit
, 0))
st
->flags
|= ST_FIXEDBLOCKS
;
st
->flags
&= ~ST_FIXEDBLOCKS
;
if (errno
= st_mode_select(unit
, 0))
st_read(unit
, buf
, readsiz
, SCSI_SILENT
);
if (errno
= st_rewind(unit
, FALSE
, 0))
} while (readsiz
!= 1 && readsiz
> st
->blksiz
);
/*******************************************************\
* Load the physical device parameters *
* loads: blkmin, blkmax *
\*******************************************************/
if(errno
= st_rd_blk_lim(unit
,0))
/*******************************************************\
* Load the media dependent parameters *
* includes: media_blksiz,media_density,numblks *
\*******************************************************/
if(errno
= st_mode_sense(unit
,0))
if (!(st
->flags
& ST_INFO_VALID
) && dsty
== 0)
/*******************************************************\
* If the user defaulted the density, use the drive's *
\*******************************************************/
st
->quirks
= st
->drive_quirks
;
st
->density
= st
->media_density
;
if (st
->density
== st
->modes
[dsty
].density
)
st
->quirks
|= st
->modes
[dsty
].quirks
;
if(st_debug
) printf("selected density %d\n", dsty
);
break; /* only out of the loop*/
/*******************************************************\
* If dsty got to 4, the drive must have reported a *
* density which isn't in our density list (e.g. QIC-24 *
* for a default drive). We can handle that, except *
* there'd better be no density-specific quirks in the *
\*******************************************************/
/***************************************************************\
* Decide whether or not to write two file marks to signify end- *
* of-data. Make the decision as a function of density. If *
* the decision is not to use a second file mark, the SCSI BLANK *
* CHECK condition code will be recognized as end-of-data when *
\***************************************************************/
/* case 8 mm: What is the SCSI density code for 8 mm, anyway? */
st
->flags
&= ~ST_2FM_AT_EOD
;
st
->flags
|= ST_2FM_AT_EOD
;
/***************************************************************\
* Make sure that a tape opened in write-only mode will have *
* file marks written on it. This is the only way to write a *
* zero-length file on tape. *
\***************************************************************/
if ((flags
& O_ACCMODE
) == FWRITE
)
st
->flags
|= ST_INFO_VALID
;
st_prevent(unit
,PR_PREVENT
,0); /* who cares if it fails? */
if(scsi_debug
& TRACEOPENS
)
printf("Params loaded ");
/*******************************************************\
* close the device.. only called if we are the LAST *
* occurence of an open device *
\*******************************************************/
if(scsi_debug
& TRACEOPENS
)
printf("Closing device");
st_rewind(unit
,FALSE
,SCSI_SILENT
);
st_prevent(unit
,PR_ALLOW
,SCSI_SILENT
);
st
->flags
&= ~ST_PER_MEDIA
;
if((st
->flags
& (ST_WRITTEN
| ST_FM_WRITTEN
)) == ST_WRITTEN
)
st_write_filemarks(unit
, 1, 0);
st_rewind(unit
,FALSE
,SCSI_SILENT
);
st_prevent(unit
,PR_ALLOW
,SCSI_SILENT
);
st_load(unit
,LD_UNLOAD
,SCSI_SILENT
);
st
->flags
&= ~ST_PER_MEDIA
;
case 3:/* a bit silly really */
st_prevent(unit
,PR_ALLOW
,SCSI_SILENT
);
st_load(unit
,LD_UNLOAD
,SCSI_SILENT
);
st
->flags
&= ~ST_PER_MEDIA
;
printf("st%d: close: Bad mode (minor number)%d how's it open?\n"
st
->flags
&= ~ST_PER_OPEN
;
/***************************************************************\
* Given all we know about the device, media, mode, 'quirks' and *
* initial operation, make a decision as to how we should be set *
* up. First, choose the density, then variable/fixed blocks. *
\***************************************************************/
st_decide_mode(unit
, first_read
)
struct st_data
*st
= st_data
[unit
];
/***************************************************************\
* First, if our information about the tape is out of date, get *
\***************************************************************/
if (!(st
->flags
& ST_INFO_VALID
))
if (error
= st_mode_sense(unit
, 0))
st
->flags
|= ST_INFO_VALID
;
if(st_debug
) printf("starting mode decision\n");
/***************************************************************\
* If the user has already specified fixed or variable-length *
* blocks using an ioctl, just believe him. OVERRIDE ALL *
\***************************************************************/
if (st
->flags
& ST_BLOCK_SET
)
if(st_debug
) printf("user has specified %s mode\n",
st
->flags
& ST_FIXEDBLOCKS
? "fixed" : "variable");
/***************************************************************\
* If the user hasn't already specified fixed or variable-length *
* blocks and the block size (zero if variable-length), we'll *
* have to try to figure them out ourselves. *
* Our first shot at a method is, "The quirks made me do it!" *
\***************************************************************/
switch (st
->quirks
& (ST_Q_FORCE_FIXED_MODE
| ST_Q_FORCE_VAR_MODE
))
case (ST_Q_FORCE_FIXED_MODE
| ST_Q_FORCE_VAR_MODE
):
printf("st%d: bad quirks\n",unit
);
case ST_Q_FORCE_FIXED_MODE
:
st
->flags
|= ST_FIXEDBLOCKS
;
if (st
->blkmin
&& (st
->blkmin
== st
->blkmax
))
else if(st
->media_blksiz
> 0)
st
->blksiz
= st
->media_blksiz
;
st
->blksiz
= DEF_FIXED_BSIZE
;
if(st_debug
) printf("Quirks force fixed mode\n");
case ST_Q_FORCE_VAR_MODE
:
st
->flags
&= ~ST_FIXEDBLOCKS
;
if(st_debug
) printf("Quirks force variable mode\n");
/***************************************************************\
* If the drive can only handle fixed-length blocks and only at *
* one size, perhaps we should just do that. *
\***************************************************************/
if (st
->blkmin
&& (st
->blkmin
== st
->blkmax
))
st
->flags
|= ST_FIXEDBLOCKS
;
if(st_debug
) printf("blkmin == blkmax of %d\n",st
->blkmin
);
/***************************************************************\
* If the tape density mandates use of fixed or variable-length *
\***************************************************************/
st
->flags
&= ~ST_FIXEDBLOCKS
;
if(st_debug
) printf("density specified variable\n");
st
->flags
|= ST_FIXEDBLOCKS
;
if (st
->media_blksiz
> 0)
st
->blksiz
= st
->media_blksiz
;
st
->blksiz
= DEF_FIXED_BSIZE
;
if(st_debug
) printf("density specified fixed\n");
/***************************************************************\
* If we're about to read the tape, perhaps we should choose *
* fixed or variable-length blocks and block size according to *
* what the drive found on the tape. *
\***************************************************************/
if (first_read
&& (!(st
->quirks
& ST_Q_BLKSIZ
) || st
->media_blksiz
== 0
|| st
->media_blksiz
== DEF_FIXED_BSIZE
|| st
->media_blksiz
== 1024))
if (st
->media_blksiz
== 0)
st
->flags
&= ~ST_FIXEDBLOCKS
;
st
->flags
|= ST_FIXEDBLOCKS
;
st
->blksiz
= st
->media_blksiz
;
if(st_debug
) printf("Used media_blksiz of %d\n",st
->media_blksiz
);
/***************************************************************\
* We're getting no hints from any direction. Choose variable- *
* length blocks arbitrarily. *
\***************************************************************/
st
->flags
&= ~ST_FIXEDBLOCKS
;
if(st_debug
) printf("Give up and default to variable mode\n");
return (st_mode_select(unit
, 0));
/*******************************************************\
* trim the size of the transfer if needed, *
* basically the smaller of our min and the scsi driver's*
\*******************************************************/
(*(st_data
[UNIT(bp
->b_dev
)]->sc_sw
->scsi_minphys
))(bp
);
/*******************************************************\
* Actually translate the requested transfer into *
* one the physical driver can understand *
* The transfer is described by a buf and will include *
* only one physical transfer. *
\*******************************************************/
unit
= UNIT((bp
->b_dev
));
if(scsi_debug
& PRINTROUTINES
) printf("\nststrategy ");
if(scsi_debug
& SHOWREQUESTS
) printf("st%d: %d bytes @ blk%d\n",
unit
,bp
->b_bcount
,bp
->b_blkno
);
/*******************************************************\
* If it's a null transfer, return immediatly *
\*******************************************************/
/*******************************************************\
* If we're at beginning of medium, now is the time to *
* set medium access density, fixed or variable-blocks *
* and, if fixed, the block size. *
\*******************************************************/
if (st
->flags
& ST_AT_BOM
&&
(bp
->b_error
= st_decide_mode(unit
, (bp
->b_flags
& B_READ
) != 0)))
/*******************************************************\
* Odd sized request on fixed drives are verboten *
\*******************************************************/
if(st
->flags
& ST_FIXEDBLOCKS
)
if(bp
->b_bcount
% st
->blksiz
)
printf("st%d: bad request, must be multiple of %d\n",
/*******************************************************\
* as are out-of-range requests on variable drives. *
\*******************************************************/
else if(bp
->b_bcount
< st
->blkmin
|| bp
->b_bcount
> st
->blkmax
)
printf("st%d: bad request, must be between %d and %d\n",
unit
, st
->blkmin
, st
->blkmax
);
/*******************************************************\
* Place it in the queue of activities for this tape *
* at the end (a bit silly because we only have on user..*
* (but it could fork() )) *
\*******************************************************/
/*******************************************************\
* Tell the device to get going on the transfer if it's *
* not doing anything, otherwise just wait for completion*
* (All a bit silly if we're only allowing 1 open but..) *
\*******************************************************/
/*******************************************************\
* Correctly set the buf to indicate a completed xfer *
\*******************************************************/
/*******************************************************\
* Perform special action on behalf of the user *
* Knows about the internals of this device *
\*******************************************************/
stioctl(dev
, cmd
, arg
, mode
)
/*******************************************************\
* Find the device that the user is talking about *
\*******************************************************/
flags
= 0; /* give error messages, act on errors etc. */
struct mtget
*g
= (struct mtget
*) arg
;
bzero(g
, sizeof(struct mtget
));
g
->mt_type
= 0x7; /* Ultrix compat */ /*?*/
if (st
->flags
& ST_FIXEDBLOCKS
) {
g
->mt_dns_dflt
= st
->modes
[0].density
;
g
->mt_dns_dsty1
= st
->modes
[DSTY1
].density
;
g
->mt_dns_dsty2
= st
->modes
[DSTY2
].density
;
g
->mt_dns_dsty3
= st
->modes
[DSTY3
].density
;
struct mtop
*mt
= (struct mtop
*) arg
;
printf("[sctape_sstatus: %x %x]\n",
mt
->mt_op
, mt
->mt_count
);
/* compat: in U*x it is a short */
switch ((short)(mt
->mt_op
))
case MTWEOF
: /* write an end-of-file record */
errcode
= st_write_filemarks(unit
,number
,flags
);
case MTBSF
: /* backward space file */
case MTFSF
: /* forward space file */
errcode
= st_chkeod(unit
, FALSE
, &nmarks
, flags
);
errcode
= st_space(unit
, number
- nmarks
,
case MTBSR
: /* backward space record */
case MTFSR
: /* forward space record */
errcode
= st_chkeod(unit
, TRUE
, &nmarks
, flags
);
errcode
= st_space(unit
,number
,SP_BLKS
,flags
);
errcode
= st_rewind(unit
,FALSE
,flags
);
case MTOFFL
: /* rewind and put the drive offline */
if(st_rewind(unit
,FALSE
,flags
))
printf("st%d: rewind failed, unit still loaded\n",
st_prevent(unit
,PR_ALLOW
,0);
st_load(unit
,LD_UNLOAD
,flags
);
case MTNOP
: /* no operation, sets status only */
case MTCACHE
: /* enable controller cache */
case MTNOCACHE
: /* disable controller cache */
case MTSETBSIZ
: /* Set block size for device */
if (!(st
->flags
& ST_AT_BOM
))
st
->flags
&= ~ST_FIXEDBLOCKS
;
if ((st
->blkmin
|| st
->blkmax
) /* they exist */
|| number
> st
->blkmax
)))
st
->flags
|= ST_FIXEDBLOCKS
;
st
->flags
|= ST_BLOCK_SET
;
/* How do we check that the drive can handle
the requested density ? */
case MTSETDNSTY
: /* Set density for device and mode */
if (number
< 0 || number
> SCSI_2_MAX_DENSITY_CODE
)
st
->modes
[dsty
].density
= number
;
/*******************************************************\
* Do a synchronous read. *
\*******************************************************/
int st_read(unit
, buf
, size
, flags
)
struct scsi_rw_tape scsi_cmd
;
struct st_data
*st
= st_data
[unit
];
/*******************************************************\
* If it's a null transfer, return immediatly *
\*******************************************************/
/*******************************************************\
* If we're at beginning of medium, now is the time to *
* set medium access density, fixed or variable-blocks *
* and, if fixed, the block size. *
\*******************************************************/
if (st
->flags
& ST_AT_BOM
&& (error
= st_decide_mode(unit
, TRUE
)))
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= READ_COMMAND_TAPE
;
scsi_cmd
.byte2
|= st
->flags
& ST_FIXEDBLOCKS
? SRWT_FIXED
: 0;
lto3b(scsi_cmd
.byte2
& SRWT_FIXED
?
size
/ (st
->blksiz
? st
->blksiz
: DEF_FIXED_BSIZE
) : size
,
return (st_scsi_cmd(unit
,
/*******************************************************\
* Get scsi driver to send a "are you ready" command *
\*******************************************************/
st_test_ready(unit
,flags
)
struct scsi_test_unit_ready scsi_cmd
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= TEST_UNIT_READY
;
return (st_scsi_cmd(unit
,
#define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
#define b2tol(a) (((unsigned)(a/**/_1) << 8) + (unsigned)a/**/_0 )
/*******************************************************\
* Ask the drive what it's min and max blk sizes are. *
\*******************************************************/
st_rd_blk_lim(unit
, flags
)
struct scsi_blk_limits scsi_cmd
;
struct scsi_blk_limits_data scsi_blkl
;
struct st_data
*st
= st_data
[unit
];
/*******************************************************\
* First check if we have it all loaded *
\*******************************************************/
if ((st
->flags
& ST_INFO_VALID
)) return 0;
/*******************************************************\
* do a 'Read Block Limits' *
\*******************************************************/
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= READ_BLK_LIMITS
;
/*******************************************************\
* do the command, update the global values *
\*******************************************************/
if ( errno
= st_scsi_cmd(unit
,
st
->blkmin
= b2tol(scsi_blkl
.min_length
);
st
->blkmax
= _3btol(&scsi_blkl
.max_length_2
);
printf("(%d <= blksiz <= %d)\n", st
->blkmin
, st
->blkmax
);
/*******************************************************\
* Get the scsi driver to send a full inquiry to the *
* device and use the results to fill out the global *
* ioctl (to reset original blksize) *
\*******************************************************/
st_mode_sense(unit
, flags
)
struct scsi_mode_sense scsi_cmd
;
struct scsi_mode_header header
;
struct blk_desc blk_desc
;
struct scsi_mode_header header
;
struct blk_desc blk_desc
;
unsigned char sense_data
[PAGE_0_SENSE_DATA_SIZE
];
/* Tandberg tape drives returns page 00 */
/* with the sense data, whether or not */
/* you want it( ie the don't like you */
/* saying you want anything less!!!!! */
/* They also expect page 00 */
/* back when you issue a mode select */
struct st_data
*st
= st_data
[unit
];
/*******************************************************\
* First check if we have it all loaded *
\*******************************************************/
if ((st
->flags
& ST_INFO_VALID
)) return 0;
/*******************************************************\
* Define what sort of structure we're working with *
\*******************************************************/
if (st
->quirks
& ST_Q_NEEDS_PAGE_0
)
scsi_sense_len
= sizeof(scsi_sense_page_0
);
scsi_sense_ptr
= (char *) &scsi_sense_page_0
;
scsi_sense_len
= sizeof(scsi_sense
);
scsi_sense_ptr
= (char *) &scsi_sense
;
/*******************************************************\
\*******************************************************/
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= MODE_SENSE
;
scsi_cmd
.length
= scsi_sense_len
;
/*******************************************************\
* do the command, but we don't need the results *
* just print them for our interest's sake, if asked, *
* or if we need it as a template for the mode select *
\*******************************************************/
if (errno
= st_scsi_cmd(unit
,
st
->numblks
= _3btol(&(((struct scsi_sense
*)scsi_sense_ptr
)->blk_desc
.nblocks
));
st
->media_blksiz
= _3btol(&(((struct scsi_sense
*)scsi_sense_ptr
)->blk_desc
.blklen
));
st
->media_density
= ((struct scsi_sense
*)scsi_sense_ptr
)->blk_desc
.density
;
if (((struct scsi_sense
*)scsi_sense_ptr
)->header
.dev_spec
&
st
->flags
|= ST_READONLY
;
printf("st%d: density code 0x%x, %d-byte blocks, write-%s, ",
unit
, st
->media_density
, st
->media_blksiz
,
st
->flags
& ST_READONLY
? "protected" : "enabled");
((struct scsi_sense
*)scsi_sense_ptr
)->header
.dev_spec
& SMH_DSP_BUFF_MODE
? "" : "un");
if (st
->quirks
& ST_Q_NEEDS_PAGE_0
)
bcopy(((struct scsi_sense_page_0
*)scsi_sense_ptr
)->sense_data
,
sizeof(((struct scsi_sense_page_0
*)scsi_sense_ptr
)->sense_data
));
/*******************************************************\
* Send a filled out parameter structure to the drive to *
* set it into the desire modes etc. *
\*******************************************************/
st_mode_select(unit
, flags
)
struct scsi_mode_select scsi_cmd
;
struct scsi_mode_header header
;
struct blk_desc blk_desc
;
struct scsi_mode_header header
;
struct blk_desc blk_desc
;
unsigned char sense_data
[PAGE_0_SENSE_DATA_SIZE
];
struct st_data
*st
= st_data
[unit
];
/*******************************************************\
* Define what sort of structure we're working with *
\*******************************************************/
if (st
->quirks
& ST_Q_NEEDS_PAGE_0
)
dat_len
= sizeof(dat_page_0
);
dat_ptr
= (char *) &dat_page_0
;
/*******************************************************\
* Set up for a mode select *
\*******************************************************/
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= MODE_SELECT
;
scsi_cmd
.length
= dat_len
;
((struct dat
*)dat_ptr
)->header
.blk_desc_len
= sizeof(struct blk_desc
);
((struct dat
*)dat_ptr
)->header
.dev_spec
|= SMH_DSP_BUFF_MODE_ON
;
((struct dat
*)dat_ptr
)->blk_desc
.density
= st
->density
;
if(st
->flags
& ST_FIXEDBLOCKS
)
lto3b( st
->blksiz
, ((struct dat
*)dat_ptr
)->blk_desc
.blklen
);
if (st
->quirks
& ST_Q_NEEDS_PAGE_0
)
bcopy(st
->sense_data
, ((struct dat_page_0
*)dat_ptr
)->sense_data
,
sizeof(((struct dat_page_0
*)dat_ptr
)->sense_data
));
/* the Tandberg tapes need the block size to */
/* be set on each mode sense/select. */
/*******************************************************\
\*******************************************************/
return (st_scsi_cmd(unit
,
flags
| SCSI_DATA_OUT
) );
/*******************************************************\
* skip N blocks/filemarks/seq filemarks/eom *
\*******************************************************/
st_space(unit
,number
,what
,flags
)
int unit
,number
,what
,flags
;
struct scsi_space scsi_cmd
;
struct st_data
*st
= st_data
[unit
];
/*******************************************************\
* If we're at beginning of medium, now is the time to *
* set medium access density, fixed or variable-blocks *
* and, if fixed, the block size. *
\*******************************************************/
if (st
->flags
& ST_AT_BOM
&&
(error
= st_decide_mode(unit
, TRUE
)))
if (st
->flags
& ST_PER_ACTION
)
st
->flags
&= ~ST_PER_ACTION
;
if (st
->flags
& ST_AT_FILEMARK
)
/*******************************\
* Handling of ST_AT_FILEMARK *
* in st_space will fill in the *
* right file mark count. *
\*******************************/
error
= st_space(unit
, 0, SP_FILEMARKS
,
if (error
) return(error
);
if (st
->flags
& ST_BLANK_READ
)
st
->flags
&= ~ST_BLANK_READ
;
st
->flags
&= ~ST_EIO_PENDING
;
if (st
->flags
& ST_EIO_PENDING
)
st
->flags
&= ~ST_EIO_PENDING
;
st
->flags
&= ~ST_EIO_PENDING
;
if (st
->flags
& ST_AT_FILEMARK
)
st
->flags
&= ~ST_AT_FILEMARK
;
if (st
->flags
& ST_BLANK_READ
&& number
< 0)
st
->flags
&= ~ST_BLANK_READ
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= SPACE
;
scsi_cmd
.byte2
= what
& SS_CODE
;
lto3b(number
,scsi_cmd
.number
);
return (st_scsi_cmd(unit
,
600000, /* 10 mins enough? */
/*******************************************************\
\*******************************************************/
st_write_filemarks(unit
,number
,flags
)
struct scsi_write_filemarks scsi_cmd
;
struct st_data
*st
= st_data
[unit
];
/*******************************************************\
* It's hard to write a negative number of file marks. *
\*******************************************************/
/*******************************************************\
* If we're at beginning of medium, now is the time to *
* set medium access density, fixed or variable-blocks *
* and, if fixed, the block size. *
\*******************************************************/
if (st
->flags
& ST_AT_BOM
&& number
> 0 &&
(error
= st_decide_mode(unit
, FALSE
)))
case 0: /* really a command to sync the drive's buffers */
if (st
->flags
& ST_FM_WRITTEN
)
st
->flags
&= ~ST_WRITTEN
;
st
->flags
|= ST_FM_WRITTEN
;
st
->flags
&= ~ST_PER_ACTION
;
st
->flags
&= ~(ST_PER_ACTION
| ST_WRITTEN
);
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= WRITE_FILEMARKS
;
lto3b(number
,scsi_cmd
.number
);
return (st_scsi_cmd(unit
,
100000, /* 10 secs.. (may need to repos head )*/
/***************************************************************\
* Make sure the right number of file marks is on tape if the *
* tape has been written. If the position argument is true, *
* leave the tape positioned where it was originally. *
* nmarks returns the number of marks to skip (or, if position *
* true, which were skipped) to get back original position. *
\***************************************************************/
st_chkeod(unit
, position
, nmarks
, flags
)
struct st_data
*st
= st_data
[unit
];
switch (st
->flags
& (ST_WRITTEN
| ST_FM_WRITTEN
| ST_2FM_AT_EOD
))
case ST_WRITTEN
| ST_FM_WRITTEN
| ST_2FM_AT_EOD
:
case ST_WRITTEN
| ST_2FM_AT_EOD
:
error
= st_write_filemarks(unit
, *nmarks
, flags
);
if (position
&& error
== ESUCCESS
)
error
= st_space(unit
, -*nmarks
, SP_FILEMARKS
, flags
);
/*******************************************************\
* load/unload (with retension if true) *
\*******************************************************/
struct scsi_load scsi_cmd
;
struct st_data
*st
= st_data
[unit
];
st
->flags
&= ~ST_PER_MEDIA
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
/*scsi_cmd.how |= LD_RETEN;*/
error
= st_chkeod(unit
, FALSE
, &nmarks
, flags
);
if (error
!= ESUCCESS
) return(error
);
st
->flags
&= ~ST_INFO_VALID
;
if(st
->quirks
& ST_Q_IGNORE_LOADS
) return(0);
scsi_cmd
.op_code
= LOAD_UNLOAD
;
return (st_scsi_cmd(unit
,
/*******************************************************\
* Prevent or allow the user to remove the tape *
\*******************************************************/
st_prevent(unit
,type
,flags
)
struct scsi_prevent scsi_cmd
;
error
= st_chkeod(unit
, TRUE
, &nmarks
, flags
);
if (error
!= ESUCCESS
) return(error
);
st_data
[unit
]->flags
&= ~ST_INFO_VALID
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= PREVENT_ALLOW
;
return (st_scsi_cmd(unit
,
/*******************************************************\
\*******************************************************/
st_rewind(unit
,immed
,flags
)
struct scsi_rewind scsi_cmd
;
struct st_data
*st
= st_data
[unit
];
error
= st_chkeod(unit
, FALSE
, &nmarks
, flags
);
if (error
!= ESUCCESS
) return(error
);
st
->flags
&= ~ST_PER_ACTION
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= REWIND
;
scsi_cmd
.byte2
= immed
? SR_IMMED
: 0;
return (st_scsi_cmd(unit
,
immed
?5000:300000, /* 5 sec or 5 min */
/***************************************************************\
* ststart looks to see if there is a buf waiting for the device *
* and that the device is not already busy. If both are true, *
* It deques the buf and creates a scsi command to perform the *
* transfer in the buf. The transfer request will call st_done *
* on completion, which will in turn call this routine again *
* so that the next queued transfer is performed. *
* The bufs are queued by the strategy routine (ststrategy) *
* This routine is also called after other non-queued requests *
* have been made of the scsi driver, to ensure that the queue *
* continues to be drained. *
\***************************************************************/
/* ststart() is called at splbio */
register struct buf
*bp
= 0;
struct st_data
*st
= st_data
[unit
];
if(scsi_debug
& PRINTROUTINES
) printf("ststart%d ",unit
);
/*******************************************************\
* See if there is a buf to do and we are not already *
\*******************************************************/
if(st
->scsi_xfer
.flags
& INUSE
)
return; /* unit already underway */
if(st
->xfer_block_wait
) /* a special awaits, let it proceed first */
wakeup(&(st
->xfer_block_wait
));
if ((bp
= st
->buf_queue
) == NULL
)
return; /* no work to bother with */
st
->buf_queue
= bp
->b_actf
;
/*******************************************************\
* only FIXEDBLOCK devices have pending operations *
\*******************************************************/
if(st
->flags
& ST_FIXEDBLOCKS
)
/*******************************************************\
* If we are at a filemark but have not reported it yet *
* then we should report it now *
\*******************************************************/
if(st
->flags
& ST_AT_FILEMARK
)
if ((bp
->b_flags
& B_READ
) == B_WRITE
)
/***************************************\
* Handling of ST_AT_FILEMARK in *
* st_space will fill in the right file *
\***************************************/
if (st_space(unit
, 0, SP_FILEMARKS
, 0) !=
bp
->b_resid
= bp
->b_bcount
;
st
->flags
&= ~ST_AT_FILEMARK
;
/*******************************************************\
* If we are at EIO (e.g. EOM) but have not reported it *
* yet then we should report it now *
\*******************************************************/
if(st
->flags
& ST_EIO_PENDING
)
bp
->b_resid
= bp
->b_bcount
;
st
->flags
&= ~ST_EIO_PENDING
;
/*******************************************************\
* Fill out the scsi command *
\*******************************************************/
bzero(&cmd
, sizeof(cmd
));
if((bp
->b_flags
& B_READ
) == B_WRITE
)
cmd
.op_code
= WRITE_COMMAND_TAPE
;
st
->flags
&= ~ST_FM_WRITTEN
;
cmd
.op_code
= READ_COMMAND_TAPE
;
/*******************************************************\
* Handle "fixed-block-mode" tape drives by using the *
* block count instead of the length. *
\*******************************************************/
if(st
->flags
& ST_FIXEDBLOCKS
)
lto3b(bp
->b_bcount
/st
->blksiz
,cmd
.len
);
lto3b(bp
->b_bcount
,cmd
.len
);
/*******************************************************\
* go ask the adapter to do all this for us *
\*******************************************************/
(u_char
*)bp
->b_un
.b_addr
,
flags
| SCSI_NOSLEEP
) != SUCCESSFULLY_QUEUED
)
printf("st%d: oops not queued\n",unit
);
/*******************************************************\
* This routine is called by the scsi interrupt when *
* the transfer is complete.
\*******************************************************/
struct st_data
*st
= st_data
[unit
];
if(scsi_debug
& PRINTROUTINES
) printf("st_done%d ",unit
);
if (! (xs
->flags
& INUSE
))
panic("scsi_xfer not in use!");
retval
= (st_interpret_sense(unit
,xs
));
bp
->b_resid
= xs
->resid
; /* already multiplied by blksiz */
/***************************************\
* We have a real error, the bit should *
* be set to indicate this. The return *
* value will contain the unix error code*
* that the error interpretation routine *
* thought was suitable, so pass this *
* value back in the buf structure. *
* Furthermore we return information *
* saying that no data was transferred *
* All status is now suspect *
\***************************************/
bp
->b_resid
= bp
->b_bcount
;
st
->flags
&= ~ST_PER_ACTION
;
/***********************************************\
* The error interpretation code has declared *
* that it wasn't a real error, or at least that *
* we should be ignoring it if it was. *
\***********************************************/
/***************************************\
* we apparently had a corrected error *
* pretend the error never happenned *
\***************************************/
if ( xs
->resid
!= xs
->datalen
)
/***************************************\
* Here we have the tricky part.. *
* We successfully read less data than *
* we requested. (but not 0) *
*------for variable blocksize tapes:----*
* We should legitimatly have the error *
* bit set, with the error value set to *
* zero.. This is to indicate to the *
* physio code that while we didn't get *
* as much information as was requested, *
* we did reach the end of the record *
* and so physio should not call us *
* again for more data... we have it all *
* SO SET THE ERROR BIT! *
* To indicate the same as above, we *
* need only have a non 0 resid that is *
* less than the b_bcount, but the *
* ERROR BIT MUST BE CLEAR! (sigh) *
*-------for fixed blocksize device------*
* We read some successful records *
* before hitting the EOF or EOT. These *
* must be passed to the user, before we *
* report the EOx. We will report the *
\***************************************/
/***************************************\
* We have come out of the error handler *
* with no error code. We have also not *
* transferred any data (would have gone *
* to the previous clause). *
* Any caller request to read no *
* data would have been short-circuited *
* at st_read or ststrategy. *
* At least all o/s agree that: *
* 0 bytes read with no error is EOF *
\***************************************/
st
->flags
&= ~ST_AT_FILEMARK
;
printf("st%d: timeout\n",unit
);
case XS_BUSY
: /* should retry */ /* how? */
/************************************************/
/* SHOULD put buf back at head of queue */
/* and decrement retry count in (*xs) */
/* HOWEVER, this should work as a kludge */
/************************************************/
if ( (*(st
->sc_sw
->scsi_cmd
))(xs
)
{ /* don't wake the job, ok? */
printf("st%d: device busy\n",unit
);
printf("st%d: unknown error category from scsi driver\n"
xs
->flags
= 0; /* no longer in use */
ststart(unit
); /* If there's another waiting.. do it */
/*******************************************************\
* ask the scsi driver to perform a command for us. *
* Call it through the switch table, and tell it which *
* sub-unit we want, and what target and lu we wish to *
* talk to. Also tell it where to find the command *
* Also tell it where to read/write the data, and how *
* long the data is supposed to be *
\*******************************************************/
int st_scsi_cmd(unit
,scsi_cmd
,cmdlen
,data_addr
,datalen
,timeout
,bp
,flags
)
struct scsi_generic
*scsi_cmd
;
struct st_data
*st
= st_data
[unit
];
if(scsi_debug
& PRINTROUTINES
) printf("\nst_scsi_cmd%d ",unit
);
if(st
->sc_sw
== NULL
) /* If we have no scsi driver */
printf("st%d: not set up\n",unit
);
if(!(flags
& SCSI_NOMASK
))
st
->xfer_block_wait
++; /* there is someone waiting */
while (xs
->flags
& INUSE
)
sleep(&(st
->xfer_block_wait
),PRIBIO
+1);
if(!(flags
& SCSI_NOMASK
))
/*******************************************************\
* Fill out the scsi_xfer structure *
\*******************************************************/
xs
->retries
= bp
?0:ST_RETRIES
;/*can't retry on IO*/
retry
: xs
->error
= XS_NOERROR
;
/***********************************************\
* Ask the adapter to do the command for us *
\***********************************************/
retval
= (*(st
->sc_sw
->scsi_cmd
))(xs
);
/***********************************************\
* IO operations are handled differently.. *
* Physio does the sleep, and error handling is *
* Done in st_done at interrupt time *
\***********************************************/
/***********************************************\
* Wait for the result if queued, or handle the *
* error if it was rejected.. *
\***********************************************/
case SUCCESSFULLY_QUEUED
:
while(!(xs
->flags
& ITSDONE
))
/*******************************\
* finished.. check for failure *
\*******************************/
retval
= (st_interpret_sense(unit
,xs
));
/* only useful for reads *//* why did I say that?*/
{ /* error... don't care about filemarks */
st
->flags
&= ~ST_PER_ACTION
;
/* should sleep 1 sec here */
printf("st%d: unknown error category from scsi driver\n"
xs
->flags
= 0; /* it's free! */
/***************************************************************\
* Look at the returned sense and act on the error and detirmine *
* The unix error number to pass back... (0 = report no error) *
\***************************************************************/
int st_interpret_sense(unit
,xs
)
struct scsi_sense_data
*sense
;
int silent
= xs
->flags
& SCSI_SILENT
;
struct st_data
*st
= st_data
[unit
];
static char *error_mes
[] = { "soft error (corrected)",
"not ready", "medium error",
"non-media hardware failure", "illegal request",
"unit attention", "tape is write-protected",
"no data found", "vendor unique",
"copy aborted", "command aborted",
"search returned equal", "volume overflow",
"verify miscompare", "unknown error key"
/***************************************************************\
* If errors are ok, report a success *
\***************************************************************/
if(xs
->flags
& SCSI_ERR_OK
) return(ESUCCESS
);
/***************************************************************\
* Get the sense fields and work out what code *
\***************************************************************/
printf("code%x valid%x\n"
,sense
->error_code
& SSD_ERRCODE
,sense
->error_code
& SSD_ERRCODE_VALID
? 1 : 0);
printf("seg%x key%x ili%x eom%x fmark%x\n"
,sense
->ext
.extended
.segment
,sense
->ext
.extended
.flags
& SSD_KEY
,sense
->ext
.extended
.flags
& SSD_ILI
? 1 : 0
,sense
->ext
.extended
.flags
& SSD_EOM
? 1 : 0
,sense
->ext
.extended
.flags
& SSD_FILEMARK
? 1 : 0);
printf("info: %x %x %x %x followed by %d extra bytes\n"
,sense
->ext
.extended
.info
[0]
,sense
->ext
.extended
.info
[1]
,sense
->ext
.extended
.info
[2]
,sense
->ext
.extended
.info
[3]
,sense
->ext
.extended
.extra_len
);
while(count
< sense
->ext
.extended
.extra_len
)
printf ("%x ",sense
->ext
.extended
.extra_bytes
[count
++]);
if(sense
->error_code
& SSD_ERRCODE_VALID
)
info
= ntohl(*((long *)sense
->ext
.extended
.info
));
info
= xs
->datalen
; /* bad choice if fixed blocks */
switch(sense
->error_code
& SSD_ERRCODE
)
/***************************************************************\
* If it's code 70, use the extended stuff and interpret the key *
\***************************************************************/
if(st
->flags
& ST_FIXEDBLOCKS
)
xs
->resid
= info
* st
->blksiz
;
if(sense
->ext
.extended
.flags
& SSD_EOM
)
st
->flags
|= ST_EIO_PENDING
;
if(sense
->ext
.extended
.flags
& SSD_FILEMARK
)
st
->flags
|= ST_AT_FILEMARK
;
if(sense
->ext
.extended
.flags
& SSD_ILI
)
st
->flags
|= ST_EIO_PENDING
;
if (sense
->error_code
& SSD_ERRCODE_VALID
&&
printf("st%d: %d-byte block wrong size"
"\n", unit
, xs
->datalen
- info
);
/***************************************\
* This quirk code helps the drive read *
* the first tape block, regardless of *
* format. That is required for these *
* drives to return proper MODE SENSE *
\***************************************/
if ((st
->quirks
& ST_Q_SNS_HLP
) &&
!(st
->flags
& ST_INFO_VALID
))
/***********************************************\
* If no data was tranfered, do it immediatly *
\***********************************************/
if(xs
->resid
>= xs
->datalen
)
if(st
->flags
& ST_EIO_PENDING
)
if(st
->flags
& ST_AT_FILEMARK
)
xs
->resid
= xs
->datalen
; /* to be sure */
if(sense
->ext
.extended
.flags
& SSD_EOM
)
if(sense
->ext
.extended
.flags
& SSD_FILEMARK
)
if(sense
->ext
.extended
.flags
& SSD_ILI
)
/***************************************\
* the record was bigger than the read *
\***************************************/
printf("st%d: %d-byte record "
}/* there may be some other error. check the rest */
key
=sense
->ext
.extended
.flags
& SSD_KEY
;
if (!silent
&& key
> 0 && (key
!= 0x8 ||
st
->flags
& (ST_2FM_AT_EOD
| ST_BLANK_READ
)))
printf("st%d: %s", unit
, error_mes
[key
- 1]);
if(sense
->error_code
& SSD_ERRCODE_VALID
)
case 0x2: /* NOT READY */
case 0x5: /* ILLEGAL REQUEST */
case 0x6: /* UNIT ATTENTION */
case 0x7: /* DATA PROTECT */
case 0x8: /* BLANK CHECK */
printf(", requested size: %d (decimal)",
printf(", info = %d (decimal)", info
);
case 0x1: /* RECOVERED ERROR */
if(xs
->resid
== xs
->datalen
) xs
->resid
= 0;
case 0x2: /* NOT READY */
case 0x5: /* ILLEGAL REQUEST */
case 0x6: /* UNIT ATTENTION */
st
->flags
&= ~ST_PER_MEDIA
;
if (st
->flags
& ST_OPEN
) /* TEMP!!!! */
case 0x7: /* DATA PROTECT */
case 0xd: /* VOLUME OVERFLOW */
case 0x8: /* BLANK CHECK */
/***********************************************\
* This quirk code helps the drive read the *
* first tape block, regardless of format. That *
* is required for these drives to return proper *
* MODE SENSE information. *
\***********************************************/
if ((st
->quirks
& ST_Q_SNS_HLP
) &&
!(st
->flags
& ST_INFO_VALID
))
else if (!(st
->flags
& (ST_2FM_AT_EOD
| ST_BLANK_READ
)))
st
->flags
|= ST_BLANK_READ
;
/***************************************************************\
* If it's NOT code 70, just report it. *
\***************************************************************/
printf("st%d: error code %d", unit
,
sense
->error_code
& SSD_ERRCODE
);
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf(" at block no. %d (decimal)",
(sense
->ext
.unextended
.blockhi
<< 16) +
(sense
->ext
.unextended
.blockmed
<< 8) +
sense
->ext
.unextended
.blocklow
);