/* $NetBSD: st.c,v 1.11 1995/08/04 08:17:43 thorpej Exp $ */ /* * Copyright (c) 1990 University of Utah. * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: st.c 1.11 92/01/21$ * * @(#)st.c 8.3 (Berkeley) 1/12/94 */ /* * SCSI CCS (Command Command Set) tape driver. * * Specific to Exabyte: * mt status: residual="Mbytes to LEOM" * minor bit 4 [b1bbbb] (aka /dev/rst16) selects short filemarks * minor bit 5 [1bbbbb] (aka /dev/rst32) selects fix block mode, 1k blocks. * * Archive drive: * can read both QIC-24 and QIC-II. But only writes * QIC-24. * * Supports Archive Viper QIC-150 tape drive, but scsi.c reports selection * errors. * * Supports Archive Python DAT drive, but will sometimes hang machine. * * Supports HP 35450A DAT drive, but will sometimes hang machine. * Partitioning of tape not supported. * Vendor unique support has not been added. * * * Supports Archive VIPER (QIC-150). * Mostly Supports Archive PYTHON (DAT). * Hangs if write after spin down. * Need scsi.c that does connect/disconnect. */ /* * support for the block device not implemented */ #include "st.h" #if NST > 0 #include #include #include #include #include #include #include #include #include #include #include #include #include extern int scsi_test_unit_rdy(); extern int scsi_request_sense(); extern int scsiustart(); extern int scsigo(); extern void scsifree(); extern void scsireset(); extern void scsi_delay(); extern int scsi_tt_oddio(); extern int scsi_immed_command(); int stinit(), ststart(), stgo(), stintr(); struct driver stdriver = { stinit, "st", ststart, stgo, stintr, }; struct st_softc { struct hp_device *sc_hd; struct devqueue sc_dq; long sc_blkno; /* (possible block device support?) */ long sc_resid; /* (possible block device support?) */ int sc_flags; int sc_blklen; /* 0 = variable len records */ int sc_filepos; /* file position on tape */ long sc_numblks; /* number of blocks on tape */ short sc_type; /* ansi scsi type */ short sc_punit; /* physical unit (scsi lun) */ short sc_tapeid; /* tape drive id */ char sc_datalen[32]; /* additional data length on some commands */ short sc_tticntdwn; /* interrupts between TTi display updates */ tpr_t sc_ctty; struct buf *sc_bp; u_char sc_cmd; } st_softc[NST]; /* softc flags */ #define STF_ALIVE 0x0001 #define STF_OPEN 0x0002 #define STF_WMODE 0x0004 #define STF_WRTTN 0x0008 #define STF_CMD 0x0010 #define STF_LEOT 0x0020 #define STF_MOVED 0x0040 struct st_mode st_mode[NST]; /* * Maybe this should not be global, but gives chance to get * tape remaining, Rewrites/ECC, etc outside the driver */ static struct st_xsense { struct scsi_xsense sc_xsense; /* data from sense */ struct exb_xsense exb_xsense; /* additional info from exabyte */ } st_xsense[NST]; static struct scsi_fmt_cdb stcmd[NST]; static struct scsi_fmt_cdb st_read_cmd = { 6, CMD_READ }; static struct scsi_fmt_cdb st_write_cmd = { 6, CMD_WRITE }; struct buf sttab[NST]; struct buf stbuf[NST]; #define UNIT(x) (minor(x) & 3) #define stpunit(x) ((x) & 7) #define STDEV_NOREWIND 0x04 #define STDEV_HIDENSITY 0x08 #define STDEV_EXSFMK 0x10 #define STDEV_FIXEDBLK 0x20 #ifdef DEBUG int st_debug = 0x0000; #define ST_OPEN 0x0001 #define ST_GO 0x0002 #define ST_FMKS 0x0004 #define ST_OPENSTAT 0x0008 #define ST_BRESID 0x0010 #define ST_ODDIO 0x0020 #endif /* * Patchable variable. If an even length read is requested a dma transfer is * used. Only after the read will we find out if the read had an odd number * of bytes. The HP98658 hardware cannot do odd length transfers, the last * byte of the data will always be 0x00. Normally, the driver will complain * about such transfers and return EIO. However, if st_dmaoddretry is non- * zero, the driver will try and issue a BSR and then re-read the data using * 'programmed transfer mode'. In most cases this works, however for unknown * reasons it will hang the machine in certain cases. * * Note: * Odd length read requests are always done using programmed transfer mode. */ int st_dmaoddretry = 0; /* * Exabyte only: * From adb can have access to fixed vs. variable length modes. * Use 0x400 for 1k (best capacity) fixed length records. * In st_open, if minor bit 4 set then 1k records are used. * If st_exblken is set to anything other then 0 we are in fixed length mode. * Minor bit 5 requests 1K fixed-length, overriding any setting of st_exblklen. */ int st_exblklen = 0; /* exabyte here for adb access, set at open time */ #define EX_CT 0x80 /* international cart - more space W/P6 */ #define EX_ND 0x20 /* no disconnect */ #define EX_NBE 0x08 /* no busy enable */ #define EX_EBD 0x04 /* even byte disconnect */ #define EX_PE 0x02 /* parity enable */ #define EX_NAL 0x01 /* no auto load */ int st_exvup = (EX_CT|EX_ND|EX_NBE); /* vendor unique parameters */ /* * motion and reconnect thresholds guidelines: * write operation; lower motion threshold for faster transfer * raise reconnect threshold for slower transfer * read operation; lower motion threshold for slower transfer * raise reconnect threshold for faster transfer */ int st_exmotthr = 0x80; /* motion threshold, 0x80 default */ int st_exreconthr = 0xa0; /* reconnect threshold, 0xa0 default */ int st_exgapthr = 7; /* gap threshold, 7 default */ #ifdef TTI int st_extti = 0x01; /* bitmask of unit numbers, do extra */ /* sensing so TTi display gets updated */ #endif stinit(hd) register struct hp_device *hd; { register struct st_softc *sc = &st_softc[hd->hp_unit]; register struct buf *bp; for (bp = sttab; bp < &sttab[NST]; bp++) bp->b_actb = &bp->b_actf; sc->sc_hd = hd; sc->sc_punit = stpunit(hd->hp_flags); sc->sc_type = stident(sc, hd); if (sc->sc_type < 0) return(0); sc->sc_dq.dq_ctlr = hd->hp_ctlr; sc->sc_dq.dq_unit = hd->hp_unit; sc->sc_dq.dq_slave = hd->hp_slave; sc->sc_dq.dq_driver = &stdriver; sc->sc_blkno = 0; sc->sc_flags = STF_ALIVE; return(1); } stident(sc, hd) register struct st_softc *sc; register struct hp_device *hd; { int unit; int ctlr, slave; int i, stat, inqlen; char idstr[32]; static int havest = 0; struct st_inquiry { struct scsi_inquiry inqbuf; struct exb_inquiry exb_inquiry; } st_inqbuf; static struct scsi_fmt_cdb st_inq = { 6, CMD_INQUIRY, 0, 0, 0, sizeof(st_inqbuf), 0 }; ctlr = hd->hp_ctlr; slave = hd->hp_slave; unit = sc->sc_punit; scsi_delay(-1); inqlen = 0x05; /* min */ st_inq.cdb[4] = 0x05; stat = scsi_immed_command(ctlr, slave, unit, &st_inq, (u_char *)&st_inqbuf, inqlen, B_READ); /* do twice as first command on some scsi tapes always fails */ stat = scsi_immed_command(ctlr, slave, unit, &st_inq, (u_char *)&st_inqbuf, inqlen, B_READ); if (stat == -1) goto failed; if ((st_inqbuf.inqbuf.type != 0x01 || /* sequential access device */ st_inqbuf.inqbuf.qual != 0x80 || /* removable media */ (st_inqbuf.inqbuf.version != 0x01 && /* current ANSI SCSI spec */ st_inqbuf.inqbuf.version != 0x02)) /* 0x02 is for HP DAT */ && (st_inqbuf.inqbuf.type != 0x01 || /* M4 ??! */ /* * the M4 is a little too smart (ass?) for its own good: * qual codes: * 0x80: you can take the tape out (unit not online) * 0xf8: online and at 6250bpi * 0xf9: online and at 1600bpi */ st_inqbuf.inqbuf.version != 0x09)) /* M4 tape */ { printf("st: wrong specs: type %x qual %x version %d\n", st_inqbuf.inqbuf.type, st_inqbuf.inqbuf.qual, st_inqbuf.inqbuf.version); goto failed; } /* now get additonal info */ inqlen = 0x05 + st_inqbuf.inqbuf.len; st_inq.cdb[4] = inqlen; bzero(&st_inqbuf, sizeof(st_inqbuf)); stat = scsi_immed_command(ctlr, slave, unit, &st_inq, (u_char *)&st_inqbuf, inqlen, B_READ); if (st_inqbuf.inqbuf.len >= 28) { bcopy((caddr_t)&st_inqbuf.inqbuf.vendor_id, (caddr_t)idstr, 28); for (i = 27; i > 23; --i) if (idstr[i] != ' ') break; idstr[i+1] = 0; for (i = 23; i > 7; --i) if (idstr[i] != ' ') break; idstr[i+1] = 0; for (i = 7; i >= 0; --i) if (idstr[i] != ' ') break; idstr[i+1] = 0; printf("st%d: %s, %s rev %s\n", hd->hp_unit, idstr, &idstr[8], &idstr[24]); } else if (inqlen == 5) /* great it's a stupid device, doesn't know it's know name */ idstr[0] = idstr[8] = '\0'; else idstr[8] = '\0'; if (stat == 0xff) { printf("st%d: Cant handle this tape drive\n", hd->hp_unit); goto failed; } if (bcmp("EXB-8200", &idstr[8], 8) == 0) { sc->sc_tapeid = MT_ISEXABYTE; sc->sc_datalen[CMD_REQUEST_SENSE] = 26; sc->sc_datalen[CMD_INQUIRY] = 52; sc->sc_datalen[CMD_MODE_SELECT] = 17; sc->sc_datalen[CMD_MODE_SENSE] = 17; } else if (bcmp("VIPER 150", &idstr[8], 9) == 0 || bcmp("VIPER 60", &idstr[8], 8) == 0) { sc->sc_tapeid = MT_ISVIPER1; sc->sc_datalen[CMD_REQUEST_SENSE] = 14; sc->sc_datalen[CMD_INQUIRY] = 36; sc->sc_datalen[CMD_MODE_SELECT] = 12; sc->sc_datalen[CMD_MODE_SENSE] = 12; } else if (bcmp("Python 25501", &idstr[8], 12) == 0) { sc->sc_tapeid = MT_ISPYTHON; sc->sc_datalen[CMD_REQUEST_SENSE] = 14; sc->sc_datalen[CMD_INQUIRY] = 36; sc->sc_datalen[CMD_MODE_SELECT] = 12; sc->sc_datalen[CMD_MODE_SENSE] = 12; } else if (bcmp("HP35450A", &idstr[8], 8) == 0) { /* XXX "extra" stat makes the HP drive happy at boot time */ stat = scsi_test_unit_rdy(ctlr, slave, unit); sc->sc_tapeid = MT_ISHPDAT; sc->sc_datalen[CMD_REQUEST_SENSE] = 14; sc->sc_datalen[CMD_INQUIRY] = 36; sc->sc_datalen[CMD_MODE_SELECT] = 12; sc->sc_datalen[CMD_MODE_SENSE] = 12; } else if (bcmp("123107 SCSI", &idstr[8], 11) == 0 || bcmp("OPEN REEL TAPE", &idstr[8], 14) == 0) { sc->sc_tapeid = MT_ISMFOUR; sc->sc_datalen[CMD_REQUEST_SENSE] = 8; sc->sc_datalen[CMD_INQUIRY] = 5; sc->sc_datalen[CMD_MODE_SELECT] = 12; sc->sc_datalen[CMD_MODE_SENSE] = 12; } else { if (idstr[8] == '\0') printf("st%d: No ID, assuming Archive\n", hd->hp_unit); else printf("st%d: Unsupported tape device\n", hd->hp_unit); sc->sc_tapeid = MT_ISAR; sc->sc_datalen[CMD_REQUEST_SENSE] = 8; sc->sc_datalen[CMD_INQUIRY] = 5; sc->sc_datalen[CMD_MODE_SELECT] = 12; sc->sc_datalen[CMD_MODE_SENSE] = 12; } sc->sc_filepos = 0; /* load xsense */ stxsense(ctlr, slave, unit, sc); scsi_delay(0); /* XXX if we have a tape, we must up the delays in the HA driver */ if (!havest) { havest = 1; scsi_delay(20000); } return(st_inqbuf.inqbuf.type); failed: scsi_delay(0); return(-1); } stopen(dev, flag, type, p) dev_t dev; int flag, type; struct proc *p; { register struct st_softc *sc = &st_softc[UNIT(dev)]; register struct st_xsense *xsense; register int count; register int stat; int ctlr, slave, unit; struct mode_select_data msd; struct mode_sense mode; int modlen; int error; static struct scsi_fmt_cdb modsel = { 6, CMD_MODE_SELECT, 0, 0, 0, sizeof(msd), 0 }; static struct scsi_fmt_cdb modsense = { 6, CMD_MODE_SENSE, 0, 0, 0, sizeof(mode), 0 }; ctlr = sc->sc_dq.dq_ctlr; slave = sc->sc_dq.dq_slave; unit = sc->sc_punit; xsense = &st_xsense[UNIT(dev)]; if (UNIT(dev) > NST || (sc->sc_flags & STF_ALIVE) == 0) return(ENXIO); if (sc->sc_flags & STF_OPEN) return(EBUSY); /* * Be prepared to print error messages */ sc->sc_ctty = tprintf_open(p); /* do a mode sense to get current */ modlen = sc->sc_datalen[CMD_MODE_SENSE]; modsense.cdb[4] = modlen; stat = scsi_immed_command(ctlr, slave, unit, &modsense, (u_char *)&mode, modlen, B_READ); /* do a mode sense to get current */ modlen = sc->sc_datalen[CMD_MODE_SENSE]; modsense.cdb[4] = modlen; stat = scsi_immed_command(ctlr, slave, unit, &modsense, (u_char *)&mode, modlen, B_READ); /* set record length */ switch (sc->sc_tapeid) { case MT_ISAR: sc->sc_blklen = 512; break; case MT_ISEXABYTE: if (minor(dev) & STDEV_FIXEDBLK) sc->sc_blklen = 0x400; else sc->sc_blklen = st_exblklen; break; case MT_ISHPDAT: sc->sc_blklen = 512; break; case MT_ISVIPER1: sc->sc_blklen = 512; break; case MT_ISPYTHON: sc->sc_blklen = 512; break; case MT_ISMFOUR: sc->sc_blklen = 0; break; default: if ((mode.md.blklen2 << 16 | mode.md.blklen1 << 8 | mode.md.blklen0) != 0) sc->sc_blklen = mode.md.blklen2 << 16 | mode.md.blklen1 << 8 | mode.md.blklen0; else sc->sc_blklen = 512; } /* setup for mode select */ msd.rsvd1 = 0; msd.rsvd2 = 0; msd.rsvd3 = 0; msd.buff = 1; msd.speed = 0; msd.blkdeslen = 0x08; msd.density = 0; msd.blks2 = 0; msd.blks1 = 0; msd.blks0 = 0; msd.rsvd4 = 0; msd.blklen2 = (sc->sc_blklen >> 16) & 0xff; msd.blklen1 = (sc->sc_blklen >> 8) & 0xff; msd.blklen0 = sc->sc_blklen & 0xff; /* * Do we have any density problems? */ switch (sc->sc_tapeid) { case MT_ISAR: if (minor(dev) & STDEV_HIDENSITY) msd.density = 0x5; else { if (flag & FWRITE) { uprintf("Can only write QIC-24\n"); return(EIO); } msd.density = 0x4; } break; case MT_ISEXABYTE: if (minor(dev) & STDEV_HIDENSITY) uprintf("EXB-8200 density support only\n"); msd.vupb = (u_char)st_exvup; msd.rsvd5 = 0; msd.p5 = 0; msd.motionthres = (u_char)st_exmotthr; msd.reconthres = (u_char)st_exreconthr; msd.gapthres = (u_char)st_exgapthr; break; case MT_ISHPDAT: case MT_ISVIPER1: case MT_ISPYTHON: if (minor(dev) & STDEV_HIDENSITY) uprintf("Only one density supported\n"); break; case MT_ISMFOUR: break; /* XXX could do density select? */ default: uprintf("Unsupported drive\n"); return(EIO); } modlen = sc->sc_datalen[CMD_MODE_SELECT]; modsel.cdb[4] = modlen; /* mode select */ count = 0; retryselect: stat = scsi_immed_command(ctlr, slave, unit, &modsel, (u_char *)&msd, modlen, B_WRITE); /* * First command after power cycle, bus reset or tape change * will error. Try command again */ if (stat == STS_CHECKCOND) { sc->sc_filepos = 0; stxsense(ctlr, slave, unit, sc); stat = scsi_immed_command(ctlr, slave, unit, &modsel, (u_char *)&msd, modlen, B_WRITE); #ifdef DEBUG if (stat && (st_debug & ST_OPEN)) printf("stopen: stat on mode select 0x%x second try\n", stat); #endif if (stat == STS_CHECKCOND) { stxsense(ctlr, slave, unit, sc); prtkey(UNIT(dev), sc); } if (stat) return(EIO); } if (stat == -1 || stat == STS_BUSY) { /* * XXX it might just be that the bus is busy because * another tape is doing a command. This would change * with connect/disconnect, ie. the other drive would * not hold onto the bus. * * Sleep on lbolt for up to 20 minutes (max time to FSF * an exabyte to EOT: 16:xx minutes) */ if (++count > 60*20) { uprintf("SCSI bus timeout\n"); return(EBUSY); } if (error = tsleep((caddr_t)&lbolt, PZERO | PCATCH, "st_scsiwait", 0)) return (error); goto retryselect; } /* drive ready ? */ stat = scsi_test_unit_rdy(ctlr, slave, unit); if (stat == STS_CHECKCOND) { stxsense(ctlr, slave, unit, sc); switch (sc->sc_tapeid) { case MT_ISEXABYTE: if ((xsense->sc_xsense.key & XSK_NOTRDY) && xsense->exb_xsense.tnp) uprintf("no cartridge\n"); else if (xsense->sc_xsense.key & XSK_NOTRDY) uprintf("cartridge not loaded\n"); else if (xsense->sc_xsense.key & XSK_UNTATTEN) { uprintf("new cart/power interrupt\n"); stat = 0; } else if ((xsense->sc_xsense.key & XSK_UNTATTEN) && xsense->exb_xsense.tnp) uprintf("cartridge unloading\n"); else prtkey(UNIT(dev), sc); break; case MT_ISMFOUR: case MT_ISAR: if (xsense->sc_xsense.key & XSK_UNTATTEN) stat = scsi_test_unit_rdy(ctlr, slave, unit); if (stat == STS_CHECKCOND) { stxsense(ctlr, slave, unit, sc); if (xsense->sc_xsense.key) prtkey(UNIT(dev), sc); } else { sc->sc_filepos = 0; /* new tape */ stat = 0; } break; case MT_ISHPDAT: case MT_ISVIPER1: case MT_ISPYTHON: if (xsense->sc_xsense.key & XSK_UNTATTEN) stat = scsi_test_unit_rdy(ctlr, slave, unit); if (stat == STS_CHECKCOND) { stxsense(ctlr, slave, unit, sc); if (xsense->sc_xsense.key) prtkey(UNIT(dev), sc); } break; default: uprintf("st%d: not ready\n", UNIT(dev)); prtkey(UNIT(dev), sc); break; } } if (stat) return(EIO); /* mode sense */ modlen = sc->sc_datalen[CMD_MODE_SENSE]; modsense.cdb[4] = modlen; stat = scsi_immed_command(ctlr, slave, unit, &modsense, (u_char *)&mode, modlen, B_READ); #ifdef DEBUG if (st_debug & ST_OPENSTAT) prtmodstat(&mode); #endif if (stat == STS_CHECKCOND) { stxsense(ctlr, slave, unit, sc); #ifdef DEBUG if (st_debug & ST_OPEN) dumpxsense(xsense); #endif } if (stat) return(EIO); if ((flag & FWRITE) && mode.md.wp) { uprintf("st:%d write protected\n", UNIT(dev)); return(EACCES); } /* save total number of blocks on tape */ sc->sc_numblks = mode.md.numblk2 << 16 | mode.md.numblk1 << 8 | mode.md.numblk0; if (xsense->sc_xsense.eom && !(sc->sc_flags & STF_LEOT)) sc->sc_filepos = 0; #ifdef DEBUG if (st_debug & ST_FMKS) printf("st%d: open filepos = %d\n", UNIT(dev), sc->sc_filepos); #endif sc->sc_flags |= (STF_OPEN); if (flag & FWRITE) sc->sc_flags |= STF_WMODE; sc->sc_flags &= ~STF_MOVED; #ifdef TTI /* make stats available, also lit up TTi display */ sc->sc_tticntdwn = 100; #endif stxsense(ctlr, slave, unit, sc); return(0); } /*ARGSUSED*/ stclose(dev, flag) dev_t dev; int flag; { register struct st_softc *sc = &st_softc[UNIT(dev)]; register int hit = 0; if ((sc->sc_flags & (STF_WMODE|STF_WRTTN)) == (STF_WMODE|STF_WRTTN)) { /* * Cartridge tapes don't do double EOFs on EOT. * We assume that variable-block devices use double EOF. */ stcommand(dev, MTWEOF, 1); if (sc->sc_blklen == 0) { stcommand(dev, MTWEOF, 1); stcommand(dev, MTBSR, 1); } hit++; } if ((minor(dev) & STDEV_NOREWIND) == 0) { stcommand(dev, MTREW, 1); hit++; } #ifdef NOTDEF /* wait until more stable before trying [XXX Needed ?] */ if (!hit && (sc->sc_flags & SFT_WMODE)) /* force out any any bufferd write data */ stcommand(dev, MTFSR, 0); #endif /* make stats available */ stxsense(sc->sc_dq.dq_ctlr, sc->sc_dq.dq_slave, sc->sc_punit, sc); sc->sc_flags &= ~(STF_OPEN|STF_WMODE|STF_WRTTN); tprintf_close(sc->sc_ctty); return(0); /* XXX */ } void ststrategy(bp) register struct buf *bp; { struct buf *dp; int unit, s; unit = UNIT(bp->b_dev); dp = &sttab[unit]; bp->b_actf = NULL; s = splbio(); bp->b_actb = dp->b_actb; *dp->b_actb = bp; dp->b_actb = &bp->b_actf; if (dp->b_active == 0) { dp->b_active = 1; stustart(unit); } splx(s); } stustart(unit) int unit; { if (scsireq(&st_softc[unit].sc_dq)) ststart(unit); } ststart(unit) int unit; { struct hp_device *hp = st_softc[unit].sc_hd; if (scsiustart(hp->hp_ctlr)) stgo(unit); } stgo(unit) int unit; { register struct st_softc *sc = &st_softc[unit]; register struct scsi_fmt_cdb *cmd; register struct buf *bp = sttab[unit].b_actf; struct hp_device *hp = sc->sc_hd; int pad, stat; long nblks; if (sc->sc_flags & STF_CMD) { cmd = &stcmd[unit]; pad = 0; } else { cmd = bp->b_flags & B_READ ? &st_read_cmd : &st_write_cmd; if (sc->sc_blklen) cmd->cdb[1] |= 0x01; /* fixed mode */ else cmd->cdb[1] &= 0xfe; if (bp->b_flags & B_READ) sc->sc_flags &= ~STF_WRTTN; else sc->sc_flags |= STF_WRTTN; if (sc->sc_blklen) { /* fixed mode */ nblks = bp->b_bcount / sc->sc_blklen; if (bp->b_bcount % sc->sc_blklen) { tprintf(sc->sc_ctty, "st%d: I/O not block aligned %d/%ld\n", unit, sc->sc_blklen, bp->b_bcount); cmd->cdb[1] &= 0xfe; /* force error */ } } else /* variable len */ nblks = bp->b_bcount; *(u_char *)(&cmd->cdb[2]) = (u_char) (nblks >> 16); *(u_char *)(&cmd->cdb[3]) = (u_char) (nblks >> 8); *(u_char *)(&cmd->cdb[4]) = (u_char) nblks; /* * Always Zero. We are either writing in variable * length mode we are writing in fixed block mode, * or we are going to do odd length IO and are not * going to use DMA. */ pad = 0; } #ifdef DEBUG if (st_debug & ST_GO) printf("stgo: cmd len %d [0]0x%x [1]0x%x [2]0x%x [3]0x%x [4]0x%x [5]0x%x\n", cmd->len, cmd->cdb[0], cmd->cdb[1], cmd->cdb[2], cmd->cdb[3], cmd->cdb[4], cmd->cdb[5]); #endif sc->sc_flags |= STF_MOVED; if (bp->b_bcount & 1) { #ifdef DEBUG if (st_debug & ST_ODDIO) printf("stgo%d: odd count %d using manual transfer\n", unit, bp->b_bcount); #endif stat = scsi_tt_oddio(hp->hp_ctlr, hp->hp_slave, sc->sc_punit, bp->b_un.b_addr, bp->b_bcount, bp->b_flags, 1); if (stat == 0) { bp->b_resid = 0; stfinish(unit, sc, bp); } } else stat = scsigo(hp->hp_ctlr, hp->hp_slave, sc->sc_punit, bp, cmd, pad); if (stat) { bp->b_error = EIO; bp->b_flags |= B_ERROR; stxsense(sc->sc_dq.dq_ctlr, sc->sc_dq.dq_slave, sc->sc_punit, sc); sterror(unit, sc, stat); stfinish(unit, sc, bp); } } stfinish(unit, sc, bp) int unit; struct st_softc *sc; struct buf *bp; { register struct buf *dp; sttab[unit].b_errcnt = 0; if (dp = bp->b_actf) dp->b_actb = bp->b_actb; else sttab[unit].b_actb = bp->b_actb; *bp->b_actb = dp; iodone(bp); scsifree(&sc->sc_dq); if (sttab[unit].b_actf) stustart(unit); else sttab[unit].b_active = 0; } int stread(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { return (physio(ststrategy, NULL, dev, B_READ, minphys, uio)); } int stwrite(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { /* XXX: check for hardware write-protect? */ return (physio(ststrategy, NULL, dev, B_WRITE, minphys, uio)); } /*ARGSUSED*/ stdump(dev) dev_t dev; { return(ENXIO); } /*ARGSUSED*/ stioctl(dev, cmd, data, flag, p) dev_t dev; int cmd; caddr_t data; int flag; struct proc *p; { register struct st_softc *sc = &st_softc[UNIT(dev)]; register int cnt; register struct mtget *mtget; register struct st_xsense *xp = &st_xsense[UNIT(dev)]; register struct mtop *op; long resid; switch (cmd) { /* tape operation */ case MTIOCTOP: op = (struct mtop *)data; switch (op->mt_op) { case MTBSR: case MTFSR: if (sc->sc_tapeid == MT_ISAR) return(ENXIO); case MTWEOF: case MTFSF: case MTBSF: cnt = (int)op->mt_count; break; case MTREW: case MTOFFL: cnt = 1; break; case MTNOP: return(0); default: return(EINVAL); } if (cnt <= 0) return(EINVAL); stcommand(dev, (u_int)op->mt_op, cnt); break; /* drive status */ case MTIOCGET: mtget = (struct mtget *)data; stxsense(sc->sc_dq.dq_ctlr, sc->sc_dq.dq_slave, sc->sc_punit, sc); mtget->mt_type = sc->sc_tapeid; mtget->mt_dsreg = 0; mtget->mt_erreg = ((xp->sc_xsense.valid << 15) | (xp->sc_xsense.filemark << 14) | (xp->sc_xsense.eom << 13) | (xp->sc_xsense.ili << 12) | (xp->sc_xsense.key << 8)); if (sc->sc_tapeid == MT_ISEXABYTE) { mtget->mt_dsreg = sc->sc_flags; resid = (xp->exb_xsense.tplft2 << 16 | xp->exb_xsense.tplft1 << 8 | xp->exb_xsense.tplft0); mtget->mt_resid = resid / 1000; mtget->mt_erreg |= (((xp->exb_xsense.rwerrcnt2 << 16 | xp->exb_xsense.rwerrcnt1 << 8 | xp->exb_xsense.rwerrcnt0) * 100) / (sc->sc_numblks - resid)) & 0xff; } else if (xp->sc_xsense.valid) { resid = ((xp->sc_xsense.info1 << 24) | (xp->sc_xsense.info2 << 16) | (xp->sc_xsense.info3 << 8) | (xp->sc_xsense.info4)); if (sc->sc_blklen) /* if fixed mode */ resid *= sc->sc_blklen; mtget->mt_resid = resid; } else mtget->mt_resid = 0; break; default: return(ENXIO); } return(0); } stintr(unit, stat) int unit, stat; { register struct st_softc *sc = &st_softc[unit]; register struct st_xsense *xp = &st_xsense[unit]; register struct buf *bp = sttab[unit].b_actf; struct hp_device *hp = sc->sc_hd; #ifdef DEBUG if (bp == NULL) { printf("st%d: bp == NULL\n", unit); return; } #endif switch (stat) { /* scsi command completed ok */ case 0: bp->b_resid = 0; break; /* more status */ case STS_CHECKCOND: stxsense(sc->sc_dq.dq_ctlr, sc->sc_dq.dq_slave, sc->sc_punit, sc); if (xp->sc_xsense.valid) { bp->b_resid = (u_long)((xp->sc_xsense.info1 << 24) | (xp->sc_xsense.info2 << 16) | (xp->sc_xsense.info3 << 8) | (xp->sc_xsense.info4)); if (sc->sc_blklen) /* fixed mode */ bp->b_resid *= sc->sc_blklen; } if (xp->sc_xsense.filemark) { sc->sc_filepos++; break; } if (xp->sc_xsense.key != XSK_NOSENCE && xp->sc_xsense.key != XSK_NOTUSED1 && xp->sc_xsense.key != XSK_NOTUSEDC && xp->sc_xsense.key != XSK_NOTUSEDE) { sterror(unit, sc, stat); bp->b_flags |= B_ERROR; bp->b_error = EIO; break; } if (xp->sc_xsense.ili) { /* * Fixed length blocks, an error. */ if (sc->sc_blklen) { tprintf(sc->sc_ctty, "st%d: Incorrect Length Indicator, blkcnt diff %d\n", unit, sc->sc_blklen - bp->b_resid); bp->b_flags |= B_ERROR; bp->b_error = EIO; break; } /* * Variable length but read more than requested, * an error. (XXX ??? wrong for 9 track?) */ if (bp->b_resid < 0) { bp->b_resid = 0; bp->b_flags |= B_ERROR; bp->b_error = ENOMEM; break; } /* * Variable length and odd, may require special * handling. */ if (bp->b_resid & 1 && (sc->sc_tapeid != MT_ISAR)) { /* * Normal behavior, treat as an error. */ if (!st_dmaoddretry) { tprintf(sc->sc_ctty, "st%d: Odd length read %d\n", UNIT(bp->b_dev), bp->b_bcount - bp->b_resid); bp->b_error = EIO; bp->b_flags |= B_ERROR; break; } /* * Attempt to back up and re-read using oddio. */ #ifdef DEBUG if (st_debug & ST_ODDIO) printf("st%d: stintr odd count %d, do BSR then oddio\n", UNIT(bp->b_dev), bp->b_bcount - bp->b_resid); #endif stat = scsi_tt_oddio(hp->hp_ctlr, hp->hp_slave, sc->sc_punit, 0, -1, 0, 0); if (stat == 0) stat = scsi_tt_oddio(hp->hp_ctlr, hp->hp_slave, sc->sc_punit, bp->b_un.b_addr, bp->b_bcount - bp->b_resid, bp->b_flags, 0); if (stat) { bp->b_error = EIO; bp->b_flags |= B_ERROR; stxsense(sc->sc_dq.dq_ctlr, sc->sc_dq.dq_slave, sc->sc_punit, sc); sterror(unit, sc, stat); } } break; } if (xp->sc_xsense.eom) { bp->b_flags |= B_ERROR; bp->b_error = ENOSPC; break; } tprintf(sc->sc_ctty, "st%d: unknown scsi error\n", unit); bp->b_flags |= B_ERROR; bp->b_error = EIO; break; default: printf("st%d: stintr unknown stat 0x%x\n", unit, stat); break; } #ifdef DEBUG if ((st_debug & ST_BRESID) && bp->b_resid != 0) printf("b_resid %d b_flags 0x%x b_error 0x%x\n", bp->b_resid, bp->b_flags, bp->b_error); #endif /* asked for more filemarks then on tape */ if (bp->b_resid != 0 && (sc->sc_flags & STF_CMD) && sc->sc_cmd == CMD_SPACE) { sc->sc_filepos -= bp->b_resid; if (sc->sc_filepos < 0) sc->sc_filepos = 0; } #ifdef TTI if (st_extti & (1<sc_type == MT_ISEXABYTE) /* to make display lit up */ /* * XXX severe performance penality for this. * Try and throttle by not calling stxsense on every intr. * Mostly for TTi we, get a stxsense call in open and close. */ if (sc->sc_tticntdwn-- == 0) { stxsense(sc->sc_dq.dq_ctlr, sc->sc_dq.dq_slave, sc->sc_punit, sc); sc->sc_tticntdwn = 100; } #endif stfinish(unit, sc, bp); } stcommand(dev, command, cnt) dev_t dev; u_int command; int cnt; { register struct st_softc *sc = &st_softc[UNIT(dev)]; register struct buf *bp = &stbuf[UNIT(dev)]; register struct scsi_fmt_cdb *cmd = &stcmd[UNIT(dev)]; register cmdcnt; int s; cmd->len = 6; /* all tape commands are cdb6 */ cmd->cdb[1] = sc->sc_punit; cmd->cdb[2] = cmd->cdb[3] = cmd->cdb[4] = cmd->cdb[5] = 0; cmdcnt = 0; /* * XXX Assumption is that everything except Archive can take * repeat count in cdb block. */ switch (command) { case MTWEOF: cmd->cdb[0] = CMD_WRITE_FILEMARK; if (sc->sc_tapeid != MT_ISAR) { cmdcnt = cnt; cnt = 1; } else cmdcnt = 1; *(u_char *)(&cmd->cdb[2]) = (u_char) (cmdcnt >> 16); *(u_char *)(&cmd->cdb[3]) = (u_char) (cmdcnt >> 8); *(u_char *)(&cmd->cdb[4]) = (u_char) cmdcnt; if (sc->sc_tapeid == MT_ISEXABYTE && (minor(dev) & STDEV_EXSFMK)) /* short filemarks */ cmd->cdb[5] |= 0x80; else cmd->cdb[5] &= 0x7f; break; case MTBSF: /* Archive can't back up, will not get to BSR case */ if (sc->sc_tapeid == MT_ISAR) { if ((sc->sc_filepos - cnt) < 0) { stcommand(dev, MTREW, 1); return; } cmdcnt = sc->sc_filepos - cnt + 1; stcommand(dev, MTREW, 1); stcommand(dev, MTFSF, cmdcnt); return; } case MTBSR: case MTFSR: case MTFSF: if (command == MTBSF || command == MTBSR) cnt = cnt * (-1); /* backward move */ if (command == MTFSF || command == MTBSF) cmd->cdb[1] |= 0x01; /* filemarks */ else cmd->cdb[1] |= 0x00; /* logical blocks */ if (sc->sc_tapeid != MT_ISAR) { cmdcnt = cnt; cnt = 1; } else cmdcnt = 1; *(u_char *)(&cmd->cdb[2]) = (u_char) (cmdcnt >> 16); *(u_char *)(&cmd->cdb[3]) = (u_char) (cmdcnt >> 8); *(u_char *)(&cmd->cdb[4]) = (u_char) cmdcnt; cmd->cdb[0] = CMD_SPACE; break; case MTREW: cmd->cdb[0] = CMD_REWIND; sc->sc_filepos = 0; break; case MTOFFL: cmd->cdb[0] = CMD_LOADUNLOAD; sc->sc_filepos = 0; break; default: printf("st%d: stcommand bad command 0x%x\n", UNIT(dev), command); } sc->sc_flags |= STF_CMD; sc->sc_cmd = cmd->cdb[0]; sc->sc_bp = bp; again: #ifdef DEBUG if (st_debug & ST_FMKS) printf("st%d: stcommand filepos %d cmdcnt %d cnt %d\n", UNIT(dev), sc->sc_filepos, cmdcnt, cnt); #endif s = splbio(); while (bp->b_flags & B_BUSY) { if (bp->b_flags & B_DONE) break; bp->b_flags |= B_WANTED; sleep((caddr_t)bp, PRIBIO); } bp->b_flags = B_BUSY|B_READ; splx(s); bp->b_dev = dev; bp->b_bcount = 0; bp->b_resid = 0; bp->b_blkno = 0; bp->b_error = 0; ststrategy(bp); iowait(bp); if (bp->b_flags & B_WANTED) wakeup((caddr_t)bp); bp->b_flags &= B_ERROR; if (command == MTWEOF || command == MTFSF || command == MTBSF) sc->sc_filepos += cmdcnt; if (--cnt > 0) goto again; sc->sc_flags |= STF_MOVED; sc->sc_flags &= ~(STF_CMD|STF_WRTTN); } sterror(unit, sc, stat) int unit, stat; struct st_softc *sc; { /* stxsense must have been called before sterror() */ if (stat & STS_CHECKCOND) prtkey(unit, sc); else if (stat) tprintf(sc->sc_ctty, "st%d: bad scsi status 0x%x\n", unit, stat); if ((sc->sc_flags & STF_CMD) && sc->sc_cmd == CMD_SPACE) /* fsf */ sc->sc_filepos--; } stxsense(ctlr, slave, unit, sc) int ctlr, slave, unit; struct st_softc *sc; { u_char *sensebuf; unsigned len; sensebuf = (u_char *)&st_xsense[sc->sc_dq.dq_unit]; len = sc->sc_datalen[CMD_REQUEST_SENSE]; scsi_request_sense(ctlr, slave, unit, sensebuf, len); } prtkey(unit, sc) int unit; struct st_softc *sc; { register struct st_xsense *xp = &st_xsense[unit]; switch (xp->sc_xsense.key) { case XSK_NOSENCE: break; case XSK_NOTUSED1: case XSK_NOTUSEDC: case XSK_NOTUSEDE: break; case XSK_REVERVED: tprintf(sc->sc_ctty, "st%d: Reserved sense key 0x%x\n", unit, xp->sc_xsense.key); break; case XSK_NOTRDY: tprintf(sc->sc_ctty, "st%d: NOT READY\n", unit); break; case XSK_MEDERR: tprintf(sc->sc_ctty, "st%d: MEDIUM ERROR\n", unit); break; case XSK_HRDWERR: tprintf(sc->sc_ctty, "st%d: HARDWARE ERROR\n", unit); break; case XSK_ILLREQ: tprintf(sc->sc_ctty, "st%d: ILLEGAL REQUEST\n", unit); break; case XSK_UNTATTEN: tprintf(sc->sc_ctty, "st%d: UNIT ATTENTION\n", unit); break; case XSK_DATAPROT: tprintf(sc->sc_ctty, "st%d: DATA PROTECT\n", unit); break; case XSK_BLNKCHK: tprintf(sc->sc_ctty, "st%d: BLANK CHECK\n", unit); break; case XSK_VENDOR: tprintf(sc->sc_ctty, "st%d: VENDER UNIQUE SENSE KEY ", unit); switch (sc->sc_tapeid) { case MT_ISEXABYTE: tprintf(sc->sc_ctty, "Exabyte: "); if (xp->exb_xsense.xfr) tprintf(sc->sc_ctty, "Transfer Abort Error\n"); if (xp->exb_xsense.tmd) tprintf(sc->sc_ctty, "Tape Mark Detect Error\n"); break; default: tprintf(sc->sc_ctty, "\n"); } break; case XSK_CPYABORT: tprintf(sc->sc_ctty, "st%d: COPY ABORTED\n", unit); break; case XSK_ABORTCMD: tprintf(sc->sc_ctty, "st%d: ABORTED COMMAND\n", unit); break; case XSK_VOLOVER: tprintf(sc->sc_ctty, "st%d: VOLUME OVERFLOW\n", unit); break; default: tprintf(sc->sc_ctty, "st%d: unknown sense key 0x%x\n", unit, xp->sc_xsense.key); } if (sc->sc_tapeid == MT_ISEXABYTE) { if (xp->exb_xsense.bpe) tprintf(sc->sc_ctty, "st%d: Bus Parity Errorn", unit); if (xp->exb_xsense.fpe) tprintf(sc->sc_ctty, "st%d: Formatted Buffer Parity Errorn", unit); if (xp->exb_xsense.eco) tprintf(sc->sc_ctty, "st%d: Error Counter Overflown", unit); if (xp->exb_xsense.tme) tprintf(sc->sc_ctty, "st%d: Tape Motion Errorn", unit); if (xp->exb_xsense.xfr) tprintf(sc->sc_ctty, "st%d: Transfer About Errorn", unit); if (xp->exb_xsense.tmd) tprintf(sc->sc_ctty, "st%d: Tape Mark Detect Errorn", unit); if (xp->exb_xsense.fmke) tprintf(sc->sc_ctty, "st%d: Filemark Errorn", unit); if (xp->exb_xsense.ure) tprintf(sc->sc_ctty, "st%d: Under Run Errorn", unit); if (xp->exb_xsense.sse) tprintf(sc->sc_ctty, "st%d: Servo System Errorn", unit); if (xp->exb_xsense.fe) tprintf(sc->sc_ctty, "st%d: Formatter Errorn", unit); if (xp->exb_xsense.wseb) tprintf(sc->sc_ctty, "st%d: WSEB Errorn", unit); if (xp->exb_xsense.wseo) tprintf(sc->sc_ctty, "st%d: WSEO Errorn", unit); } } #ifdef DEBUG dumpxsense(sensebuf) struct st_xsense *sensebuf; { struct st_xsense *xp = sensebuf; printf("valid 0x%x errorclass 0x%x errorcode 0x%x\n", xp->sc_xsense.valid, xp->sc_xsense.class, xp->sc_xsense.code); printf("seg number 0x%x\n", xp->sc_xsense.segment); printf("FMK 0x%x EOM 0x%x ILI 0x%x RSVD 0x%x sensekey 0x%x\n", xp->sc_xsense.filemark, xp->sc_xsense.eom, xp->sc_xsense.ili, xp->sc_xsense.rsvd, xp->sc_xsense.key); printf("info 0x%lx\n", (u_long)((xp->sc_xsense.info1<<24)|(xp->sc_xsense.info2<<16)| (xp->sc_xsense.info3<<8)|(xp->sc_xsense.info4)) ); printf("ASenseL 0x%x\n", xp->sc_xsense.len); if (xp->sc_xsense.len != 0x12) /* MT_ISEXB Exabyte only ?? */ return; /* What about others */ printf("ASenseC 0x%x\n", xp->exb_xsense.addsens); printf("AsenseQ 0x%x\n", xp->exb_xsense.addsensq); printf("R/W Errors 0x%lx\n", (u_long)((xp->exb_xsense.rwerrcnt2<<16)| (xp->exb_xsense.rwerrcnt1<<8)| (xp->exb_xsense.rwerrcnt1)) ); printf("PF 0x%x BPE 0x%x FPE 0x%x ME 0x%x ECO 0x%x TME 0x%x TNP 0x%x BOT 0x%x\n", xp->exb_xsense.pf, xp->exb_xsense.bpe, xp->exb_xsense.fpe, xp->exb_xsense.me, xp->exb_xsense.eco, xp->exb_xsense.tme, xp->exb_xsense.tnp, xp->exb_xsense.bot); printf("XFR 0x%x TMD 0x%x WP 0x%x FMKE 0x%x URE 0x%x WE1 0x%x SSE 0x%x FE 0x%x\n", xp->exb_xsense.xfr, xp->exb_xsense.tmd, xp->exb_xsense.wp, xp->exb_xsense.fmke, xp->exb_xsense.ure, xp->exb_xsense.we1, xp->exb_xsense.sse, xp->exb_xsense.fe); printf("WSEB 0x%x WSEO 0x%x\n", xp->exb_xsense.wseb, xp->exb_xsense.wseo); printf("Remaining Tape 0x%lx\n", (u_long)((xp->exb_xsense.tplft2<<16)| (xp->exb_xsense.tplft1<<8)| (xp->exb_xsense.tplft0)) ); } prtmodsel(msd, modlen) struct mode_select_data *msd; int modlen; { printf("Modsel command. len is 0x%x.\n", modlen); printf("rsvd1 0x%x rsvd2 0x%x rsvd3 0x%x bufferd 0x%x speed 0x%x bckdeslen 0x%x\n", msd->rsvd1,msd->rsvd2,msd->rsvd3,msd->buff,msd->speed,msd->blkdeslen); printf("density 0x%x blks2 0x%x blks1 0x%x blks0 0x%x rsvd 0x%x blklen2 0x%x blklen1 0x%x blklen0 0x%x\n", msd->density,msd->blks2,msd->blks1,msd->blks0,msd->rsvd4,msd->blklen2,msd->blklen1,msd->blklen0); printf("vupb 0x%x rsvd 0x%x p5 0x%x motionthres 0x%x reconthres 0x%x gapthres 0x%x \n", msd->vupb,msd->rsvd5,msd->p5,msd->motionthres,msd->reconthres,msd->gapthres); } prtmodstat(mode) struct mode_sense *mode; { printf("Mode Status\n"); printf("sdl 0x%x medtype 0x%x wp 0x%x bfmd 0x%x speed 0x%x bdl 0x%x\n", mode->md.sdl, mode->md.medtype, mode->md.wp, mode->md.bfmd, mode->md.speed, mode->md.bdl); printf("dencod 0x%x numblk 0x%x blklen 0x%x\n", mode->md.dencod, (mode->md.numblk2<<16)|(mode->md.numblk1<<8)|(mode->md.numblk0), (mode->md.blklen2<<16)|(mode->md.blklen1<<8)|(mode->md.blklen0) ); printf("ct 0x%x nd 0x%x nbe 0x%x edb 0x%x pe 0x%x nal 0x%x p5 0x%x\n", mode->ex.ct, mode->ex.nd, mode->ex.nbe, mode->ex.ebd, mode->ex.pe, mode->ex.nal, mode->ex.p5); printf("motionthres 0x%x reconthres 0x%x gapthres 0x%x\n", mode->ex.motionthres, mode->ex.reconthres, mode->ex.gapthres); } #endif /* DEBUG */ #endif