Return to BSD News archive
Newsgroups: comp.unix.bsd
Path: sserve!manuel!munnari.oz.au!spool.mu.edu!uwm.edu!caen!uakari.primate.wisc.edu!ames!agate!tfs.com!tfs.com!julian
From: julian@tfs.com (Julian Elischer)
Subject: new new scsi release beta2 part 2 of 5 (fixed)
Message-ID: <1992Sep23.221739.16605@tfs.com>
Organization: TRW Financial Systems
Date: Wed, 23 Sep 1992 22:17:39 GMT
Lines: 1765
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# scsi/scsi_tape.h
# scsi/st.c
#
echo x - scsi/scsi_tape.h
sed 's/^X//' >scsi/scsi_tape.h << 'END-of-scsi/scsi_tape.h'
X/*
X * HISTORY
X * $Log: scsi_tape.h,v $
X *
X */
X
X/*
X * SCSI tape interface description
X */
X
X/*
X * Written by Julian Elischer (julian@tfs.com)
X * for TRW Financial Systems.
X *
X * TRW Financial Systems, in accordance with their agreement with Carnegie
X * Mellon University, makes this software available to CMU to distribute
X * or use in any manner that they see fit as long as this message is kept with
X * the software. For this reason TFS also grants any other persons or
X * organisations permission to use or modify this software.
X *
X * TFS supplies this software to be publicly redistributed
X * on the understanding that TFS is not responsible for the correct
X * functioning of this software in any circumstances.
X *
X */
X
X/*
X * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
X */
X
X/*
X * SCSI command format
X */
X
X
Xstruct scsi_rw_tape
X{
X u_char op_code;
X u_char fixed:1;
X u_char :4;
X u_char lun:3;
X u_char len[3];
X u_char link:1;
X u_char flag:1;
X u_char :6;
X} rw_tape;
X
Xstruct scsi_space
X{
X u_char op_code;
X u_char code:2;
X u_char :3;
X u_char lun:3;
X u_char number[3];
X u_char link:1;
X u_char flag:1;
X u_char :6;
X} space;
X#define SP_BLKS 0
X#define SP_FILEMARKS 1
X#define SP_SEQ_FILEMARKS 2
X#define SP_EOM 3
X
Xstruct scsi_write_filemarks
X{
X u_char op_code;
X u_char :5;
X u_char lun:3;
X u_char number[3];
X u_char link:1;
X u_char flag:1;
X u_char :6;
X} write_filemarks;
X
Xstruct scsi_rewind
X{
X u_char op_code;
X u_char immed:1;
X u_char :4;
X u_char lun:3;
X u_char unused[3];
X u_char link:1;
X u_char flag:1;
X u_char :6;
X} rewind;
X
Xstruct scsi_load
X{
X u_char op_code;
X u_char immed:1;
X u_char :4;
X u_char lun:3;
X u_char unused[2];
X u_char load:1;
X u_char reten:1;
X u_char :6;
X u_char link:1;
X u_char flag:1;
X u_char :6;
X} load;
X#define LD_UNLOAD 0
X#define LD_LOAD 1
X
Xstruct scsi_blk_limits
X{
X u_char op_code;
X u_char :5;
X u_char lun:3;
X u_char unused[3];
X u_char link:1;
X u_char flag:1;
X u_char :6;
X} blk_limits;
X
X/*
X * Opcodes
X */
X
X#define REWIND 0x01
X#define READ_BLK_LIMITS 0x05
X#define READ_COMMAND_TAPE 0x08
X#define WRITE_COMMAND_TAPE 0x0a
X#define WRITE_FILEMARKS 0x10
X#define SPACE 0x11
X#define LOAD_UNLOAD 0x1b /* same as above */
X
X
X
Xstruct scsi_blk_limits_data
X{
X u_char reserved;
X u_char max_length_2; /* Most significant */
X u_char max_length_1;
X u_char max_length_0; /* Least significant */
X u_char min_length_1; /* Most significant */
X u_char min_length_0; /* Least significant */
X};
X
Xstruct scsi_mode_header_tape
X{
X u_char data_length; /* Sense data length */
X u_char medium_type;
X u_char speed:4;
X u_char buf_mode:3;
X u_char :1;
X u_char blk_desc_len;
X};
X
END-of-scsi/scsi_tape.h
echo x - scsi/st.c
sed 's/^X//' >scsi/st.c << 'END-of-scsi/st.c'
X/*
X * Written by Julian Elischer (julian@tfs.com)
X * for TRW Financial Systems for use under the MACH(2.5) operating system.
X *
X * TRW Financial Systems, in accordance with their agreement with Carnegie
X * Mellon University, makes this software available to CMU to distribute
X * or use in any manner that they see fit as long as this message is kept with
X * the software. For this reason TFS also grants any other persons or
X * organisations permission to use or modify this software.
X *
X * TFS supplies this software to be publicly redistributed
X * on the understanding that TFS is not responsible for the correct
X * functioning of this software in any circumstances.
X *
X */
X
X/*
X * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
X */
X
X/*
X * HISTORY
X * $Log: st.c,v $
X *
X */
X
X/*
X * To do:
X * work out some better way of guessing what a good timeout is going
X * to be depending on whether we expect to retension or not.
X *
X */
X
X#include <sys/types.h>
X#include <st.h>
X
X#include <sys/param.h>
X#include <sys/systm.h>
X
X#include <sys/errno.h>
X#include <sys/ioctl.h>
X#include <sys/buf.h>
X#include <sys/proc.h>
X#include <sys/user.h>
X#include <sys/mtio.h>
X
X#if defined(OSF)
X#define SECSIZE 512
X#endif /* defined(OSF) */
X
X#include <scsi/scsi_all.h>
X#include <scsi/scsi_tape.h>
X#include <scsi/scsiconf.h>
X
X
Xlong int ststrats,stqueues;
X
X
X#define PAGESIZ 4096
X#define STQSIZE 4
X#define ST_RETRIES 4
X
X
X#define MODE(z) ( (minor(z) & 0x0F) )
X#define UNIT(z) ( (minor(z) >> 4) )
X
X#ifndef __386BSD__
Xstruct buf stbuf[NST][STQSIZE]; /* buffer for raw io (one per device) */
Xstruct buf *stbuf_free[NST]; /* queue of free buffers for raw io */
X#endif __386BSD__
Xstruct buf st_buf_queue[NST];
Xint ststrategy();
Xvoid stminphys();
Xstruct scsi_xfer st_scsi_xfer[NST];
Xint st_xfer_block_wait[NST];
X
X#if defined(OSF)
Xcaddr_t st_window[NST];
X#endif /* defined(OSF) */
X#ifndef MACH
X#define ESUCCESS 0
X#endif MACH
X
Xint st_info_valid[NST]; /* the info about the device is valid */
Xint st_initialized[NST] ;
Xint st_debug = 0;
X
Xint stattach();
Xint st_done();
Xstruct st_data
X{
X int flags;
X struct scsi_switch *sc_sw; /* address of scsi low level switch */
X int ctlr; /* so they know which one we want */
X int targ; /* our scsi target ID */
X int lu; /* out scsi lu */
X int blkmin; /* min blk size */
X int blkmax; /* max blk size */
X int numblks; /* nominal blocks capacity */
X int blksiz; /* nominal block size */
X}st_data[NST];
X#define ST_OPEN 0x01
X#define ST_NOREWIND 0x02
X#define ST_WRITTEN 0x04
X#define ST_FIXEDBLOCKS 0x10
X#define ST_AT_FILEMARK 0x20
X
X#define ST_PER_ACTION ST_AT_FILEMARK
X#define ST_PER_OPEN (ST_OPEN | ST_NOREWIND | ST_WRITTEN | ST_PER_ACTION)
X#define ST_PER_MEDIA ST_FIXEDBLOCKS
X
Xstatic int next_st_unit = 0;
X/***********************************************************************\
X* The routine called by the low level scsi routine when it discovers *
X* A device suitable for this driver *
X\***********************************************************************/
X
Xint stattach(ctlr,targ,lu,scsi_switch)
Xstruct scsi_switch *scsi_switch;
X{
X int unit,i;
X unsigned char *tbl;
X struct st_data *st;
X
X if(scsi_debug & PRINTROUTINES) printf("stattach: ");
X /*******************************************************\
X * Check we have the resources for another drive *
X \*******************************************************/
X unit = next_st_unit++;
X if( unit >= NST)
X {
X printf("Too many scsi tapes..(%d > %d) reconfigure kernel",(unit + 1),NST);
X return(0);
X }
X st = st_data + unit;
X /*******************************************************\
X * Store information needed to contact our base driver *
X \*******************************************************/
X st->sc_sw = scsi_switch;
X st->ctlr = ctlr;
X st->targ = targ;
X st->lu = lu;
X
X /*******************************************************\
X * Use the subdriver to request information regarding *
X * the drive. We cannot use interrupts yet, so the *
X * request must specify this. *
X \*******************************************************/
X if((st_mode_sense(unit, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT)))
X {
X printf(" st%d: scsi tape drive, %d blocks of %d bytes\n",
X unit, st->numblks, st->blksiz);
X }
X else
X {
X printf(" st%d: scsi tape drive :- offline\n", unit);
X }
X /*******************************************************\
X * Set up the bufs for this device *
X \*******************************************************/
X#ifndef __386BSD__
X stbuf_free[unit] = (struct buf *)0;
X for (i = 1; i < STQSIZE; i++)
X {
X stbuf[unit][i].b_forw = stbuf_free[unit];
X stbuf_free[unit]=&stbuf[unit][i];
X }
X#endif __386BSD__
X st_buf_queue[unit].b_active = 0;
X st_buf_queue[unit].b_actf = st_buf_queue[unit].b_actl = 0;
X st_initialized[unit] = 1;
X
X#if defined(OSF)
X st_window[unit] = (caddr_t)alloc_kva(SECSIZE*256+PAGESIZ);
X#endif /* defined(OSF) */
X
X return;
X
X}
X
X
X
X/*******************************************************\
X* open the device. *
X\*******************************************************/
Xstopen(dev)
X{
X int errcode = 0;
X int unit,mode;
X struct st_data *st;
X unit = UNIT(dev);
X mode = MODE(dev);
X st = st_data + unit;
X
X /*******************************************************\
X * Check the unit is legal *
X \*******************************************************/
X if ( unit >= NST )
X {
X errcode = ENXIO;
X return(errcode);
X }
X /*******************************************************\
X * Only allow one at a time *
X \*******************************************************/
X if(st->flags & ST_OPEN)
X {
X errcode = ENXIO;
X goto bad;
X }
X /*******************************************************\
X * Set up the mode flags according to the minor number *
X * ensure all open flags are in a known state *
X \*******************************************************/
X st->flags &= ~ST_PER_OPEN;
X switch(mode)
X {
X case 2:
X case 0:
X st->flags &= ~ST_NOREWIND;
X break;
X case 3:
X case 1:
X st->flags |= ST_NOREWIND;
X break;
X default:
X printf("st%d: Bad mode (minor number)%d\n",unit,mode);
X return(EINVAL);
X }
X if(scsi_debug & (PRINTROUTINES | TRACEOPENS))
X printf("stopen: dev=0x%x (unit %d (of %d))\n"
X , dev, unit, NST);
X /*******************************************************\
X * Make sure the device has been initialised *
X \*******************************************************/
X
X if (!st_initialized[unit])
X return(ENXIO);
X /*******************************************************\
X * Check that it is still responding and ok. *
X \*******************************************************/
X
X if(scsi_debug & TRACEOPENS)
X printf("device is ");
X if (!(st_req_sense(unit, 0)))
X {
X errcode = ENXIO;
X if(scsi_debug & TRACEOPENS)
X printf("not responding\n");
X goto bad;
X }
X if(scsi_debug & TRACEOPENS)
X printf("ok\n");
X
X if(!(st_test_ready(unit,0)))
X {
X printf("st%d not ready\n",unit);
X return(EIO);
X }
X
X if(!st_info_valid[unit]) /* is media new? */
X if(!st_load(unit,LD_LOAD,0))
X {
X return(EIO);
X }
X
X if(!st_rd_blk_lim(unit,0))
X {
X return(EIO);
X }
X
X if(!st_mode_sense(unit,0))
X {
X return(EIO);
X }
X
X if(!st_mode_select(unit,0))
X {
X return(EIO);
X }
X
X st_info_valid[unit] = TRUE;
X
X st_prevent(unit,PR_PREVENT,0); /* who cares if it fails? */
X
X /*******************************************************\
X * Load the physical device parameters *
X \*******************************************************/
X if(scsi_debug & TRACEOPENS)
X printf("Params loaded ");
X
X st->flags |= ST_OPEN;
X return(errcode);
Xbad:
X return(errcode);
X}
X
X/*******************************************************\
X* close the device.. only called if we are the LAST *
X* occurence of an open device *
X\*******************************************************/
Xstclose(dev)
X{
X unsigned char unit,mode;
X struct st_data *st;
X
X unit = UNIT(dev);
X mode = MODE(dev);
X st = st_data + unit;
X
X if(scsi_debug & TRACEOPENS)
X printf("Closing device");
X if(st->flags & ST_WRITTEN)
X {
X st_write_filemarks(unit,1,0);
X }
X st->flags &= ~ST_WRITTEN;
X switch(mode)
X {
X case 0:
X st_rewind(unit,FALSE,SCSI_SILENT);
X st_prevent(unit,PR_ALLOW,SCSI_SILENT);
X break;
X case 1:
X st_prevent(unit,PR_ALLOW,SCSI_SILENT);
X break;
X case 2:
X st_rewind(unit,FALSE,SCSI_SILENT);
X st_prevent(unit,PR_ALLOW,SCSI_SILENT);
X st_load(unit,LD_UNLOAD,SCSI_SILENT);
X break;
X case 3:
X st_prevent(unit,PR_ALLOW,SCSI_SILENT);
X st_load(unit,LD_UNLOAD,SCSI_SILENT);
X break;
X default:
X printf("st%d:close: Bad mode (minor number)%d how's it open?\n"
X ,unit,mode);
X return(EINVAL);
X }
X st->flags &= ~ST_PER_OPEN;
X return(0);
X}
X
X#ifndef __386BSD__
X/*******************************************************\
X* Get ownership of this unit's buf *
X* If need be, sleep on it, until it comes free *
X\*******************************************************/
Xstruct buf *
Xst_get_buf(unit) {
X struct buf *rc;
X
X while (!(rc = stbuf_free[unit]))
X sleep((caddr_t)&stbuf_free[unit], PRIBIO+1);
X stbuf_free[unit] = stbuf_free[unit]->b_forw;
X rc->b_error = 0;
X rc->b_resid = 0;
X rc->b_flags = 0;
X return(rc);
X}
X
X/*******************************************************\
X* Free this unit's buf, wake processes waiting for it *
X\*******************************************************/
Xst_free_buf(unit,bp)
Xstruct buf *bp;
X{
X if (!stbuf_free[unit])
X wakeup((caddr_t)&stbuf_free[unit]);
X bp->b_forw = stbuf_free[unit];
X stbuf_free[unit] = bp;
X}
X
X
X/*******************************************************\
X* Get the buf for this unit and use physio to do it *
X\*******************************************************/
Xstread(dev,uio)
Xregister short dev;
Xstruct uio *uio;
X{
X int unit = UNIT(dev);
X struct buf *bp = st_get_buf(unit);
X int rc;
X rc = physio(ststrategy, bp, dev, B_READ, stminphys, uio);
X st_free_buf(unit,bp);
X return(rc);
X}
X
X/*******************************************************\
X* Get the buf for this unit and use physio to do it *
X\*******************************************************/
Xstwrite(dev,uio)
Xdev_t dev;
Xstruct uio *uio;
X{
X int unit = UNIT(dev);
X struct buf *bp = st_get_buf(unit);
X int rc;
X
X rc = physio(ststrategy, bp, dev, B_WRITE, stminphys, uio);
X st_free_buf(unit,bp);
X return(rc);
X}
X
X
X#endif __386BSD__
X/*******************************************************\
X* trim the size of the transfer if needed, *
X* called by physio *
X* basically the smaller of our min and the scsi driver's*
X* minphys *
X\*******************************************************/
Xvoid stminphys(bp)
Xstruct buf *bp;
X{
X (*(st_data[UNIT(bp->b_dev)].sc_sw->scsi_minphys))(bp);
X}
X
X/*******************************************************\
X* Actually translate the requested transfer into *
X* one the physical driver can understand *
X* The transfer is described by a buf and will include *
X* only one physical transfer. *
X\*******************************************************/
X
Xint ststrategy(bp)
Xstruct buf *bp;
X{
X struct buf *dp;
X unsigned char unit;
X unsigned int opri;
X
X ststrats++;
X unit = UNIT((bp->b_dev));
X if(scsi_debug & PRINTROUTINES) printf("\nststrategy ");
X if(scsi_debug & SHOWREQUESTS) printf("st%d: %d bytes @ blk%d\n",
X unit,bp->b_bcount,bp->b_blkno);
X /*******************************************************\
X * If it's a null transfer, return immediatly *
X \*******************************************************/
X if (bp->b_bcount == 0) {
X goto done;
X }
X
X /*******************************************************\
X * Odd sized request on fixed drives are verboten *
X \*******************************************************/
X if((st_data[unit].flags & ST_FIXEDBLOCKS)
X && bp->b_bcount % st_data[unit].blkmin)
X {
X printf("st%d: bad request, must be multiple of %d\n",
X unit, st_data[unit].blkmin);
X bp->b_error = EIO;
X goto bad;
X }
X
X#ifdef __386BSD__
X stminphys(bp);
X#endif __386BSD__
X opri = splbio();
X dp = &st_buf_queue[unit];
X
X /*******************************************************\
X * Place it in the queue of disk activities for this tape*
X * at the end *
X \*******************************************************/
X while ( dp->b_actf)
X {
X dp = dp->b_actf;
X }
X dp->b_actf = bp;
X bp->b_actf = NULL;
X
X /*******************************************************\
X * Tell the device to get going on the transfer if it's *
X * not doing anything, otherwise just wait for completion*
X \*******************************************************/
X ststart(unit);
X
X splx(opri);
X return;
Xbad:
X bp->b_flags |= B_ERROR;
Xdone:
X /*******************************************************\
X * Correctly set the buf to indicate a completed xfer *
X \*******************************************************/
X iodone(bp);
X return;
X}
X
X
X/***************************************************************\
X* ststart looks to see if there is a buf waiting for the device *
X* and that the device is not already busy. If both are true, *
X* It deques the buf and creates a scsi command to perform the *
X* transfer in the buf. The transfer request will call st_done *
X* on completion, which will in turn call this routine again *
X* so that the next queued transfer is performed. *
X* The bufs are queued by the strategy routine (ststrategy) *
X* *
X* This routine is also called after other non-queued requests *
X* have been made of the scsi driver, to ensure that the queue *
X* continues to be drained. *
X\***************************************************************/
X/* ststart() is called at splbio */
Xststart(unit)
X{
X int drivecount;
X register struct buf *bp = 0;
X register struct buf *dp;
X struct scsi_xfer *xs;
X struct scsi_rw_tape cmd;
X int blkno, nblk;
X struct st_data *st;
X
X
X st = st_data + unit;
X
X if(scsi_debug & PRINTROUTINES) printf("ststart%d ",unit);
X /*******************************************************\
X * See if there is a buf to do and we are not already *
X * doing one *
X \*******************************************************/
X xs=&st_scsi_xfer[unit];
X if(xs->flags & INUSE)
X {
X return; /* unit already underway */
X }
X if(st_xfer_block_wait[unit]) /* a special awaits, let it proceed first */
X {
X wakeup(&st_xfer_block_wait[unit]);
X return;
X }
X
X dp = &st_buf_queue[unit];
X if ((bp = dp->b_actf) != NULL)
X {
X dp->b_actf = bp->b_actf;
X }
X else /* no work to do */
X {
X return;
X }
X xs->flags = INUSE; /* Now ours */
X
X
X /*******************************************************\
X * We have a buf, now we should move the data into *
X * a scsi_xfer definition and try start it *
X \*******************************************************/
X
X /*******************************************************\
X * If we are at a filemark but have not reported it yet *
X * then we should report it now *
X \*******************************************************/
X if(st->flags & ST_AT_FILEMARK)
X {
X bp->b_error = 0;
X bp->b_flags |= B_ERROR; /* EOF*/
X st->flags &= ~ST_AT_FILEMARK;
X biodone(bp);
X xs->flags = 0; /* won't need it now */
X return;
X }
X /*******************************************************\
X * Fill out the scsi command *
X \*******************************************************/
X bzero(&cmd, sizeof(cmd));
X if((bp->b_flags & B_READ) == B_WRITE)
X {
X st->flags |= ST_WRITTEN;
X xs->flags |= SCSI_DATA_OUT;
X }
X else
X {
X xs->flags |= SCSI_DATA_IN;
X }
X cmd.op_code = (bp->b_flags & B_READ)
X ? READ_COMMAND_TAPE
X : WRITE_COMMAND_TAPE;
X
X /*******************************************************\
X * Handle "fixed-block-mode" tape drives by using the *
X * block count instead of the length. *
X \*******************************************************/
X if(st->flags & ST_FIXEDBLOCKS)
X {
X cmd.fixed = 1;
X lto3b(bp->b_bcount/st->blkmin,cmd.len);
X }
X else
X {
X lto3b(bp->b_bcount,cmd.len);
X }
X
X /*******************************************************\
X * Fill out the scsi_xfer structure *
X * Note: we cannot sleep as we may be an interrupt *
X \*******************************************************/
X xs->flags |= SCSI_NOSLEEP;
X xs->adapter = st->ctlr;
X xs->targ = st->targ;
X xs->lu = st->lu;
X xs->retries = 1; /* can't retry on tape*/
X xs->timeout = 100000; /* allow 100 secs for retension */
X xs->cmd = (struct scsi_generic *)&cmd;
X xs->cmdlen = sizeof(cmd);
X xs->data = (u_char *)bp->b_un.b_addr;
X xs->datalen = bp->b_bcount;
X xs->resid = bp->b_bcount;
X xs->when_done = st_done;
X xs->done_arg = unit;
X xs->done_arg2 = (int)xs;
X xs->error = XS_NOERROR;
X xs->bp = bp;
X /*******************************************************\
X * Pass all this info to the scsi driver. *
X \*******************************************************/
X
X
X#if defined(OSF)||defined(FIX_ME)
X if (bp->b_flags & B_PHYS) {
X xs->data = (u_char*)map_pva_kva(bp->b_proc, bp->b_un.b_addr,
X bp->b_bcount, st_window[unit],
X (bp->b_flags&B_READ)?B_WRITE:B_READ);
X } else {
X xs->data = (u_char*)bp->b_un.b_addr;
X }
X#endif /* defined(OSF) */
X
X if ( (*(st->sc_sw->scsi_cmd))(xs) != SUCCESSFULLY_QUEUED)
X {
X printf("st%d: oops not queued",unit);
X xs->error = XS_DRIVER_STUFFUP;
X st_done(unit,xs);
X }
X stqueues++;
X}
X
X/*******************************************************\
X* This routine is called by the scsi interrupt when *
X* the transfer is complete.
X\*******************************************************/
Xint st_done(unit,xs)
Xint unit;
Xstruct scsi_xfer *xs;
X{
X struct buf *bp;
X int retval;
X
X if(scsi_debug & PRINTROUTINES) printf("st_done%d ",unit);
X if (! (xs->flags & INUSE))
X panic("scsi_xfer not in use!");
X if(bp = xs->bp)
X {
X switch(xs->error)
X {
X case XS_NOERROR:
X bp->b_flags &= ~B_ERROR;
X bp->b_error = 0;
X bp->b_resid = 0;
X break;
X case XS_SENSE:
X retval = (st_interpret_sense(unit,xs));
X if(retval)
X {
X bp->b_flags |= B_ERROR;
X /* bp->b_error = retval; */
X }
X bp->b_error = retval;
X bp->b_resid = xs->resid;
X if((st_data[unit].flags & ST_FIXEDBLOCKS))
X {
X bp->b_resid *= st_data[unit].blkmin;
X }
X if(bp->b_resid == bp->b_bcount)
X { /* we are reporting an EOF , lose flag */
X st_data[unit].flags &= ~ST_AT_FILEMARK;
X }
X break;
X
X case XS_TIMEOUT:
X printf("st%d timeout\n",unit);
X break;
X
X case XS_BUSY: /* should retry */ /* how? */
X /************************************************/
X /* SHOULD put buf back at head of queue */
X /* and decrement retry count in (*xs) */
X /* HOWEVER, this should work as a kludge */
X /* -may not have a buf!- */
X /************************************************/
X if(xs->retries--)
X {
X xs->flags &= ~ITSDONE;
X xs->error = XS_NOERROR;
X if ( (*(st_data[unit].sc_sw->scsi_cmd))(xs)
X == SUCCESSFULLY_QUEUED)
X { /* don't wake the job, ok? */
X return;
X }
X printf("device busy");
X xs->flags |= ITSDONE;
X }
X
X case XS_DRIVER_STUFFUP:
X bp->b_flags |= B_ERROR;
X bp->b_error = EIO;
X break;
X default:
X printf("st%d: unknown error category from scsi driver\n"
X ,unit);
X }
X biodone(bp);
X xs->flags = 0; /* no longer in use */
X ststart(unit); /* If there's another waiting.. do it */
X }
X else
X {
X wakeup(xs);
X }
X}
X/*******************************************************\
X* Perform special action on behalf of the user *
X* Knows about the internals of this device *
X\*******************************************************/
Xstioctl(dev, cmd, arg, mode)
Xdev_t dev;
Xint cmd;
Xcaddr_t arg;
X{
X register i,j;
X unsigned int opri;
X int errcode = 0;
X unsigned char unit;
X int number,flags,ret;
X
X /*******************************************************\
X * Find the device that the user is talking about *
X \*******************************************************/
X flags = 0; /* give error messages, act on errors etc. */
X unit = UNIT(dev);
X
X switch(cmd)
X {
X
X case MTIOCGET:
X {
X struct mtget *g = (struct mtget *) arg;
X
X bzero(g, sizeof(struct mtget));
X g->mt_type = 0x7; /* Ultrix compat */ /*?*/
X ret=TRUE;
X break;
X }
X
X
X case MTIOCTOP:
X {
X struct mtop *mt = (struct mtop *) arg;
X
X if (st_debug)
X printf("[sctape_sstatus: %x %x]\n",
X mt->mt_op, mt->mt_count);
X
X
X
X /* compat: in U*x it is a short */
X number = mt->mt_count;
X switch ((short)(mt->mt_op))
X {
X case MTWEOF: /* write an end-of-file record */
X ret = st_write_filemarks(unit,number,flags);
X st_data[unit].flags &= ~ST_WRITTEN;
X break;
X case MTFSF: /* forward space file */
X ret = st_space(unit,number,SP_FILEMARKS,flags);
X break;
X case MTBSF: /* backward space file */
X ret = st_space(unit,-number,SP_FILEMARKS,flags);
X break;
X case MTFSR: /* forward space record */
X ret = st_space(unit,number,SP_BLKS,flags);
X break;
X case MTBSR: /* backward space record */
X ret = st_space(unit,-number,SP_BLKS,flags);
X break;
X case MTREW: /* rewind */
X ret = st_rewind(unit,FALSE,flags);
X break;
X case MTOFFL: /* rewind and put the drive offline */
X if((ret = st_rewind(unit,FALSE,flags)))
X {
X st_prevent(unit,PR_ALLOW,0);
X ret = st_load(unit,LD_UNLOAD,flags);
X }
X else
X {
X printf("rewind failed, unit still loaded\n");
X }
X break;
X case MTNOP: /* no operation, sets status only */
X case MTCACHE: /* enable controller cache */
X case MTNOCACHE: /* disable controller cache */
X ret = TRUE;;
X break;
X default:
X return EINVAL;
X }
X break;
X }
X case MTIOCIEOT:
X case MTIOCEEOT:
X ret=TRUE;
X break;
X }
X
X return(ret?ESUCCESS:EIO);
X}
X
X
X/*******************************************************\
X* Check with the device that it is ok, (via scsi driver)*
X\*******************************************************/
Xst_req_sense(unit, flags)
Xint flags;
X{
X struct scsi_sense_data sense;
X struct scsi_sense scsi_cmd;
X
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = REQUEST_SENSE;
X scsi_cmd.length = sizeof(sense);
X
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X &sense,
X sizeof(sense),
X 100000,
X flags | SCSI_DATA_IN) != 0)
X {
X return(FALSE);
X }
X else
X return(TRUE);
X}
X
X/*******************************************************\
X* Get scsi driver to send a "are you ready" command *
X\*******************************************************/
Xst_test_ready(unit,flags)
Xint unit,flags;
X{
X struct scsi_test_unit_ready scsi_cmd;
X
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = TEST_UNIT_READY;
X
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X 0,
X 0,
X 100000,
X flags) != 0) {
X return(FALSE);
X } else
X return(TRUE);
X}
X
X
X#ifdef __STDC__
X#define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
X#else
X#define b2tol(a) (((unsigned)(a/**/_1) << 8) + (unsigned)a/**/_0 )
X#endif
X
X/*******************************************************\
X* Ask the drive what it's min and max blk sizes are. *
X\*******************************************************/
Xst_rd_blk_lim(unit, flags)
Xint unit,flags;
X{
X struct scsi_blk_limits scsi_cmd;
X struct scsi_blk_limits_data scsi_blkl;
X struct st_data *st = st_data + unit;
X /*******************************************************\
X * First check if we have it all loaded *
X \*******************************************************/
X if (st_info_valid[unit]) goto done;
X
X /*******************************************************\
X * do a 'Read Block Limits' *
X \*******************************************************/
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = READ_BLK_LIMITS;
X
X /*******************************************************\
X * do the command, update the global values *
X \*******************************************************/
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X &scsi_blkl,
X sizeof(scsi_blkl),
X 5000,
X flags | SCSI_DATA_IN) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("could not get blk limits for unit %d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X if (st_debug)
X {
X printf(" (%d <= blksiz <= %d\n) ",
X b2tol(scsi_blkl.min_length),
X _3btol(&scsi_blkl.max_length_2));
X }
X st->blkmin = b2tol(scsi_blkl.min_length);
X st->blkmax = _3btol(&scsi_blkl.max_length_2);
X
Xdone:
X if(st->blkmin && (st->blkmin == st->blkmax))
X {
X st->flags |= ST_FIXEDBLOCKS;
X }
X return(TRUE);
X}
X/*******************************************************\
X* Get the scsi driver to send a full inquiry to the *
X* device and use the results to fill out the global *
X* parameter structure. *
X\*******************************************************/
Xst_mode_sense(unit, flags)
Xint unit,flags;
X{
X struct scsi_mode_sense scsi_cmd;
X struct
X {
X struct scsi_mode_header_tape header;
X struct blk_desc blk_desc;
X }scsi_sense;
X struct st_data *st = st_data + unit;
X
X /*******************************************************\
X * First check if we have it all loaded *
X \*******************************************************/
X if (st_info_valid[unit]) return(TRUE);
X /*******************************************************\
X * First do a mode sense *
X \*******************************************************/
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = MODE_SENSE;
X scsi_cmd.length = sizeof(scsi_sense);
X /*******************************************************\
X * do the command, but we don't need the results *
X * just print them for our interest's sake *
X \*******************************************************/
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X &scsi_sense,
X sizeof(scsi_sense),
X 5000,
X flags | SCSI_DATA_IN) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("could not mode sense for unit %d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X if (st_debug)
X {
X printf("unit %d: %d blocks, (%d bytes each)",
X unit,
X _3btol(&scsi_sense.blk_desc.nblocks),
X _3btol(&scsi_sense.blk_desc.blklen));
X }
X st->numblks = _3btol(&scsi_sense.blk_desc.nblocks);
X st->blksiz = _3btol(&scsi_sense.blk_desc.blklen);
X return(TRUE);
X}
X
X/*******************************************************\
X* Get the scsi driver to send a full inquiry to the *
X* device and use the results to fill out the global *
X* parameter structure. *
X\*******************************************************/
Xst_mode_select(unit, flags)
Xint unit,flags;
X{
X struct scsi_mode_select scsi_cmd;
X struct
X {
X struct scsi_mode_header_tape header;
X struct blk_desc blk_desc;
X }dat;
X struct st_data *st = st_data + unit;
X /*******************************************************\
X * First check if we have it all loaded *
X \*******************************************************/
X if (st_info_valid[unit]) return(TRUE);
X /*******************************************************\
X * Set up for a mode select *
X \*******************************************************/
X bzero(&dat, sizeof(dat));
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = MODE_SELECT;
X scsi_cmd.length = sizeof(dat);
X dat.header.blk_desc_len = sizeof(struct blk_desc);
X dat.header.buf_mode = 1;
X if(st->flags & ST_FIXEDBLOCKS)
X {
X lto3b( st->blkmin , dat.blk_desc.blklen);
X }
X/* lto3b( st->numblks , dat.blk_desc.nblocks); use defaults!!!!
X lto3b( st->blksiz , dat.blk_desc.blklen);
X*/
X /*******************************************************\
X * do the command *
X \*******************************************************/
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X &dat,
X sizeof(dat),
X 5000,
X flags | SCSI_DATA_OUT) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("could not mode select for unit %d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X return(TRUE);
X}
X
X/*******************************************************\
X* skip N blocks/filemarks/seq filemarks/eom *
X\*******************************************************/
Xst_space(unit,number,what,flags)
Xint unit,number,what,flags;
X{
X struct scsi_space scsi_cmd;
X
X /* if we are at a filemark now, we soon won't be*/
X st_data[unit].flags &= ST_AT_FILEMARK;
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = SPACE;
X scsi_cmd.code = what;
X lto3b(number,scsi_cmd.number);
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X 0,
X 0,
X 600000, /* 10 mins enough? */
X flags) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("could not space st%d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X return(TRUE);
X}
X/*******************************************************\
X* write N filemarks *
X\*******************************************************/
Xst_write_filemarks(unit,number,flags)
Xint unit,number,flags;
X{
X struct scsi_write_filemarks scsi_cmd;
X
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = WRITE_FILEMARKS;
X lto3b(number,scsi_cmd.number);
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X 0,
X 0,
X 100000, /* 10 secs.. (may need to repos head )*/
X flags) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("could not write_filemarks st%d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X return(TRUE);
X}
X/*******************************************************\
X* load /unload (with retension if true) *
X\*******************************************************/
Xst_load(unit,type,flags)
Xint unit,type,flags;
X{
X struct scsi_load scsi_cmd;
X
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = LOAD_UNLOAD;
X scsi_cmd.load=type;
X if (type == LD_LOAD)
X {
X /*scsi_cmd.reten=TRUE;*/
X scsi_cmd.reten=FALSE;
X }
X else
X {
X scsi_cmd.reten=FALSE;
X }
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X 0,
X 0,
X 30000, /* 30 secs */
X flags) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("cannot load/unload st%d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X return(TRUE);
X}
X/*******************************************************\
X* Prevent or allow the user to remove the tape *
X\*******************************************************/
Xst_prevent(unit,type,flags)
Xint unit,type,flags;
X{
X struct scsi_prevent scsi_cmd;
X
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = PREVENT_ALLOW;
X scsi_cmd.prevent=type;
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X 0,
X 0,
X 5000,
X flags) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("cannot prevent/allow on st%d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X return(TRUE);
X}
X/*******************************************************\
X* Rewind the device *
X\*******************************************************/
Xst_rewind(unit,immed,flags)
Xint unit,immed,flags;
X{
X struct scsi_rewind scsi_cmd;
X
X bzero(&scsi_cmd, sizeof(scsi_cmd));
X scsi_cmd.op_code = REWIND;
X scsi_cmd.immed=immed;
X if (st_scsi_cmd(unit,
X &scsi_cmd,
X sizeof(scsi_cmd),
X 0,
X 0,
X immed?5000:300000, /* 5 sec or 5 min */
X flags) != 0)
X {
X if(!(flags & SCSI_SILENT))
X printf("could not rewind st%d\n", unit);
X st_info_valid[unit] = FALSE;
X return(FALSE);
X }
X return(TRUE);
X}
X/*******************************************************\
X* ask the scsi driver to perform a command for us. *
X* Call it through the switch table, and tell it which *
X* sub-unit we want, and what target and lu we wish to *
X* talk to. Also tell it where to find the command *
X* how long int is. *
X* Also tell it where to read/write the data, and how *
X* long the data is supposed to be *
X\*******************************************************/
Xint st_scsi_cmd(unit,scsi_cmd,cmdlen,data_addr,datalen,timeout,flags)
X
Xint unit,flags;
Xstruct scsi_generic *scsi_cmd;
Xint cmdlen;
Xint timeout;
Xu_char *data_addr;
Xint datalen;
X{
X struct scsi_xfer *xs;
X int retval;
X int s;
X struct st_data *st = st_data + unit;
X
X if(scsi_debug & PRINTROUTINES) printf("\nst_scsi_cmd%d ",unit);
X if(st->sc_sw) /* If we have a scsi driver */
X {
X
X xs = &(st_scsi_xfer[unit]);
X if(!(flags & SCSI_NOMASK))
X s = splbio();
X st_xfer_block_wait[unit]++; /* there is someone waiting */
X while (xs->flags & INUSE)
X {
X sleep(&st_xfer_block_wait[unit],PRIBIO+1);
X }
X st_xfer_block_wait[unit]--;
X xs->flags = INUSE;
X if(!(flags & SCSI_NOMASK))
X splx(s);
X
X /*******************************************************\
X * Fill out the scsi_xfer structure *
X \*******************************************************/
X xs->flags |= flags;
X xs->adapter = st->ctlr;
X xs->targ = st->targ;
X xs->lu = st->lu;
X xs->retries = ST_RETRIES;
X xs->timeout = timeout;
X xs->cmd = scsi_cmd;
X xs->cmdlen = cmdlen;
X xs->data = data_addr;
X xs->datalen = datalen;
X xs->resid = datalen;
X xs->when_done = (flags & SCSI_NOMASK)
X ?(int (*)())0
X :st_done;
X xs->done_arg = unit;
X xs->done_arg2 = (int)xs;
Xretry: xs->error = XS_NOERROR;
X xs->bp = 0;
X retval = (*(st->sc_sw->scsi_cmd))(xs);
X switch(retval)
X {
X case SUCCESSFULLY_QUEUED:
X while(!(xs->flags & ITSDONE))
X sleep(xs,PRIBIO+1);
X
X case HAD_ERROR:
X case COMPLETE:
X switch(xs->error)
X {
X case XS_NOERROR:
X retval = ESUCCESS;
X break;
X case XS_SENSE:
X retval = (st_interpret_sense(unit,xs));
X st->flags &= ST_AT_FILEMARK; /* only useful for reads */
X break;
X case XS_DRIVER_STUFFUP:
X retval = EIO;
X break;
X case XS_TIMEOUT:
X if(xs->retries-- )
X {
X xs->flags &= ~ITSDONE;
X goto retry;
X }
X retval = EIO;
X break;
X case XS_BUSY:
X if(xs->retries-- )
X {
X xs->flags &= ~ITSDONE;
X goto retry;
X }
X retval = EIO;
X break;
X default:
X retval = EIO;
X printf("st%d: unknown error category from scsi driver\n"
X ,unit);
X break;
X }
X break;
X case TRY_AGAIN_LATER:
X if(xs->retries-- )
X {
X xs->flags &= ~ITSDONE;
X goto retry;
X }
X retval = EIO;
X break;
X default:
X retval = EIO;
X }
X xs->flags = 0; /* it's free! */
X ststart(unit);
X }
X else
X {
X printf("st%d: not set up\n",unit);
X return(EINVAL);
X }
X return(retval);
X}
X/***************************************************************\
X* Look at the returned sense and act on the error and detirmine *
X* The unix error number to pass back... (0 = report no error) *
X\***************************************************************/
X
Xint st_interpret_sense(unit,xs)
Xint unit;
Xstruct scsi_xfer *xs;
X{
X struct scsi_sense_data *sense;
X int key;
X int silent = xs->flags & SCSI_SILENT;
X
X /***************************************************************\
X * If errors are ok, report a success *
X \***************************************************************/
X if(xs->flags & SCSI_ERR_OK) return(ESUCCESS);
X
X /***************************************************************\
X * Get the sense fields and work out what CLASS *
X \***************************************************************/
X sense = &(xs->sense);
X switch(sense->error_class)
X {
X /***************************************************************\
X * If it's class 7, use the extended stuff and interpret the key *
X \***************************************************************/
X case 7:
X {
X key=sense->ext.extended.sense_key;
X if(sense->ext.extended.ili)
X {
X if(!silent)
X {
X printf("length error ");
X }
X if(sense->valid)
X {
X xs->resid = ntohl(*((long *)sense->ext.extended.info));
X if(xs->bp)
X {
X xs->bp->b_flags |= B_ERROR;
X return(ESUCCESS);
X }
X }
X }
X if(sense->ext.extended.eom)
X if(!silent) printf("end of medium ");
X
X if(sense->ext.extended.filemark)
X {
X st_data[unit].flags |= ST_AT_FILEMARK;
X
X if(!silent) printf("filemark ");
X }
X
X if(st_debug)
X {
X printf("code%x class%x valid%x\n"
X ,sense->error_code
X ,sense->error_class
X ,sense->valid);
X printf("seg%x key%x ili%x eom%x fmark%x\n"
X ,sense->ext.extended.segment
X ,sense->ext.extended.sense_key
X ,sense->ext.extended.ili
X ,sense->ext.extended.eom
X ,sense->ext.extended.filemark);
X printf("info: %x %x %x %x followed by %d extra bytes\n"
X ,sense->ext.extended.info[0]
X ,sense->ext.extended.info[1]
X ,sense->ext.extended.info[2]
X ,sense->ext.extended.info[3]
X ,sense->ext.extended.extra_len);
X printf("extra: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x\n"
X ,sense->ext.extended.extra_bytes[0]
X ,sense->ext.extended.extra_bytes[1]
X ,sense->ext.extended.extra_bytes[2]
X ,sense->ext.extended.extra_bytes[3]
X ,sense->ext.extended.extra_bytes[4]
X ,sense->ext.extended.extra_bytes[5]
X ,sense->ext.extended.extra_bytes[6]
X ,sense->ext.extended.extra_bytes[7]
X ,sense->ext.extended.extra_bytes[8]
X ,sense->ext.extended.extra_bytes[9]
X ,sense->ext.extended.extra_bytes[10]
X ,sense->ext.extended.extra_bytes[11]
X ,sense->ext.extended.extra_bytes[12]
X ,sense->ext.extended.extra_bytes[13]
X ,sense->ext.extended.extra_bytes[14]
X ,sense->ext.extended.extra_bytes[15]);
X
X }
X switch(key)
X {
X case 0x0:
X return(ESUCCESS);
X case 0x1:
X if(!silent)
X {
X printf("st%d: soft error(corrected) ", unit);
X if(sense->valid)
X {
X printf("block no. %d (decimal)\n",
X (sense->ext.extended.info[0] <<24)|
X (sense->ext.extended.info[1] <<16)|
X (sense->ext.extended.info[2] <<8)|
X (sense->ext.extended.info[3] ));
X }
X else
X {
X printf("\n");
X }
X }
X return(ESUCCESS);
X case 0x2:
X if(!silent) printf("st%d: not ready\n ", unit);
X return(ENODEV);
X case 0x3:
X if(!silent)
X {
X printf("st%d: medium error ", unit);
X if(sense->valid)
X {
X printf("block no. %d (decimal)\n",
X (sense->ext.extended.info[0] <<24)|
X (sense->ext.extended.info[1] <<16)|
X (sense->ext.extended.info[2] <<8)|
X (sense->ext.extended.info[3] ));
X }
X else
X {
X printf("\n");
X }
X }
X return(EIO);
X case 0x4:
X if(!silent) printf("st%d: non-media hardware failure\n ",
X unit);
X return(EIO);
X case 0x5:
X if(!silent) printf("st%d: illegal request\n ", unit);
X return(EINVAL);
X case 0x6:
X if(!silent) printf("st%d: Unit attention.\n ", unit);
X st_info_valid[unit] = FALSE;
X if (st_data[unit].flags & ST_OPEN) /* TEMP!!!! */
X return(EIO);
X else
X return(ESUCCESS);
X case 0x7:
X if(!silent)
X {
X printf("st%d: attempted protection violation "
X , unit);
X if(sense->valid)
X {
X printf("block no. %d (decimal)\n",
X (sense->ext.extended.info[0] <<24)|
X (sense->ext.extended.info[1] <<16)|
X (sense->ext.extended.info[2] <<8)|
X (sense->ext.extended.info[3] ));
X }
X else
X {
X printf("\n");
X }
X }
X return(EACCES);
X case 0x8:
X if(!silent)
X {
X printf("st%d: block wrong state (worm)\n "
X , unit);
X if(sense->valid)
X {
X printf("block no. %d (decimal)\n",
X (sense->ext.extended.info[0] <<24)|
X (sense->ext.extended.info[1] <<16)|
X (sense->ext.extended.info[2] <<8)|
X (sense->ext.extended.info[3] ));
X }
X else
X {
X printf("\n");
X }
X }
X return(EIO);
X case 0x9:
X if(!silent) printf("st%d: vendor unique\n",
X unit);
X return(EIO);
X case 0xa:
X if(!silent) printf("st%d: copy aborted\n ",
X unit);
X return(EIO);
X case 0xb:
X if(!silent) printf("st%d: command aborted\n ",
X unit);
X return(EIO);
X case 0xc:
X if(!silent)
X {
X printf("st%d: search returned\n ", unit);
X if(sense->valid)
X {
X printf("block no. %d (decimal)\n",
X (sense->ext.extended.info[0] <<24)|
X (sense->ext.extended.info[1] <<16)|
X (sense->ext.extended.info[2] <<8)|
X (sense->ext.extended.info[3] ));
X }
X else
X {
X printf("\n");
X }
X }
X return(ESUCCESS);
X case 0xd:
X if(!silent) printf("st%d: volume overflow\n ",
X unit);
X return(ENOSPC);
X case 0xe:
X if(!silent)
X {
X printf("st%d: verify miscompare\n ", unit);
X if(sense->valid)
X {
X printf("block no. %d (decimal)\n",
X (sense->ext.extended.info[0] <<24)|
X (sense->ext.extended.info[1] <<16)|
X (sense->ext.extended.info[2] <<8)|
X (sense->ext.extended.info[3] ));
X }
X else
X {
X printf("\n");
X }
X }
X return(EIO);
X case 0xf:
X if(!silent) printf("st%d: unknown error key\n ",
X unit);
X return(EIO);
X }
X break;
X }
X /***************************************************************\
X * If it's NOT class 7, just report it. *
X \***************************************************************/
X case 0:
X case 1:
X case 2:
X case 3:
X case 4:
X case 5:
X case 6:
X {
X if(!silent) printf("st%d: error class %d code %d\n",
X unit,
X sense->error_class,
X sense->error_code);
X if(sense->valid)
X if(!silent) printf("block no. %d (decimal)\n",
X (sense->ext.unextended.blockhi <<16),
X + (sense->ext.unextended.blockmed <<8),
X + (sense->ext.unextended.blocklow ));
X }
X return(EIO);
X }
X}
X
X#if defined(OSF)
X
Xstsize(dev_t dev)
X{
X printf("stsize() -- not implemented\n");
X return(0);
X}
X
Xstdump()
X{
X printf("stdump() -- not implemented\n");
X return(-1);
X}
X
X#endif /* defined(OSF) */
X
END-of-scsi/st.c
exit