-#include "ht.h"
+/* ht.c 4.22 82/05/12 */
+
+#include "tu.h"
#if NHT > 0
/*
* TM03/TU?? tape driver
+ *
+ * TODO:
+ * cleanup messages on errors
+ * test ioctl's
+ * see how many rewind interrups we get if we kick when not at BOT
+ * fixup rle error on block tape code
*/
#include "../h/param.h"
#include "../h/systm.h"
#include "../h/user.h"
#include "../h/map.h"
#include "../h/pte.h"
-#include "../h/mba.h"
+#include "../h/mbareg.h"
+#include "../h/mbavar.h"
#include "../h/mtio.h"
#include "../h/ioctl.h"
#include "../h/cmap.h"
+#include "../h/cpu.h"
#include "../h/htreg.h"
struct buf chtbuf[NHT];
short httypes[] =
- { MBDT_TE16, MBDT_TU45, MBDT_TU77, 0 };
-struct mba_info *htinfo[NHT];
-int htdkinit(), htustart(), htndtint(), htdtint();
+ { MBDT_TM03, MBDT_TE16, MBDT_TU45, MBDT_TU77, 0 };
+struct mba_device *htinfo[NHT];
+int htattach(), htslave(), htustart(), htndtint(), htdtint();
struct mba_driver htdriver =
- { htdkinit, htustart, 0, htdtint, htndtint, httypes, htinfo };
+ { htattach, htslave, htustart, 0, htdtint, htndtint,
+ httypes, "ht", "tu", htinfo };
#define MASKREG(r) ((r) & 0xffff)
/* bits in minor device */
-#define HTUNIT(dev) (minor(dev)&03)
+#define TUUNIT(dev) (minor(dev)&03)
#define H_NOREWIND 04
#define H_1600BPI 08
+#define HTUNIT(dev) (tutoht[TUUNIT(dev)])
+
#define INF (daddr_t)1000000L /* a block number that wont exist */
-struct ht_softc {
+struct tu_softc {
char sc_openf;
char sc_flags;
daddr_t sc_blkno;
u_short sc_dsreg;
short sc_resid;
short sc_dens;
-} ht_softc[NHT];
+ struct mba_device *sc_mi;
+ int sc_slave;
+} tu_softc[NTU];
+short tutoht[NTU];
/*
* Bits for sc_flags.
#define H_ERASED 2 /* last write retry was an erase gap */
#define H_REWIND 4 /* last unit start was a rewind */
+char hter_bits[] = HTER_BITS;
+char htds_bits[] = HTDS_BITS;
+
/*ARGSUSED*/
-htdkinit(mi)
- struct mba_info *mi;
+htattach(mi)
+ struct mba_device *mi;
{
}
+htslave(mi, ms)
+ struct mba_device *mi;
+ struct mba_slave *ms;
+{
+ register struct tu_softc *sc = &tu_softc[ms->ms_unit];
+ register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv;
+
+ htaddr->httc = ms->ms_slave;
+ if (htaddr->htdt & HTDT_SPR) {
+ sc->sc_mi = mi;
+ sc->sc_slave = ms->ms_slave;
+ tutoht[ms->ms_unit] = mi->mi_unit;
+ return (1);
+ } else
+ return (0);
+}
+
htopen(dev, flag)
dev_t dev;
int flag;
{
- register int unit;
- register struct mba_info *mi;
- register struct ht_softc *sc;
-
- unit = HTUNIT(dev);
- if (unit >= NHT || (sc = &ht_softc[unit])->sc_openf ||
- (mi = htinfo[unit]) == 0 || mi->mi_alive == 0) {
+ register int tuunit;
+ register struct mba_device *mi;
+ register struct tu_softc *sc;
+ int olddens, dens;
+
+ tuunit = TUUNIT(dev);
+ if (tuunit >= NTU || (sc = &tu_softc[tuunit])->sc_openf ||
+ (mi = htinfo[HTUNIT(dev)]) == 0 || mi->mi_alive == 0) {
u.u_error = ENXIO;
return;
}
- /*
- * The NOP below serves two purposes:
- * 1. To get a recent copy of the status registers.
- * 2. To ensure that any outstanding rewinds are truly finished
- */
+ olddens = sc->sc_dens;
+ dens = sc->sc_dens =
+ ((minor(dev)&H_1600BPI)?HTTC_1600BPI:HTTC_800BPI)|
+ HTTC_PDP11|sc->sc_slave;
htcommand(dev, HT_SENSE, 1);
- if ((sc->sc_dsreg & HTDS_MOL) == 0 ||
- (flag & (FREAD|FWRITE)) == FWRITE && sc->sc_dsreg&HTDS_WRL) {
+ sc->sc_dens = olddens;
+ if ((sc->sc_dsreg & HTDS_MOL) == 0) {
+ uprintf("tu%d: not online\n", tuunit);
+ u.u_error = EIO;
+ return;
+ }
+ if ((flag&FWRITE) && (sc->sc_dsreg&HTDS_WRL)) {
+ uprintf("tu%d: no write ring\n", tuunit);
+ u.u_error = EIO;
+ return;
+ }
+ if ((sc->sc_dsreg & HTDS_BOT) == 0 && (flag&FWRITE) &&
+ dens != sc->sc_dens) {
+ uprintf("tu%d: can't change density in mid-tape\n", tuunit);
u.u_error = EIO;
return;
}
- sc->sc_dens =
- ((minor(dev)&H_1600BPI)?HTTC_1600BPI:HTTC_800BPI)|HTTC_PDP11|mi->mi_slave;
- printf("dens %o\n", sc->sc_dens);
sc->sc_openf = 1;
sc->sc_blkno = (daddr_t)0;
sc->sc_nxrec = INF;
sc->sc_flags = 0;
+ sc->sc_dens = dens;
}
htclose(dev, flag)
register dev_t dev;
register flag;
{
- register struct ht_softc *sc = &ht_softc[HTUNIT(dev)];
+ register struct tu_softc *sc = &tu_softc[TUUNIT(dev)];
if (flag == FWRITE || ((flag&FWRITE) && (sc->sc_flags&H_WRITTEN))) {
htcommand(dev, HT_WEOF, 1);
htcommand(dev, HT_SREV, 1);
}
if ((minor(dev)&H_NOREWIND) == 0)
- /* 0 as third arg means don't wait */
htcommand(dev, HT_REW, 0);
sc->sc_openf = 0;
}
-/*
- * Do a non-data-transfer command.
- *
- * N.B.: Count should be zero ONLY for rewind during close.
- */
htcommand(dev, com, count)
dev_t dev;
int com, count;
{
register struct buf *bp;
+ register int s;
bp = &chtbuf[HTUNIT(dev)];
- (void) spl5();
+ s = spl5();
while (bp->b_flags&B_BUSY) {
+ if(bp->b_repcnt == 0 && (bp->b_flags&B_DONE))
+ break;
bp->b_flags |= B_WANTED;
sleep((caddr_t)bp, PRIBIO);
}
bp->b_flags = B_BUSY|B_READ;
- (void) spl0();
+ splx(s);
bp->b_dev = dev;
bp->b_command = com;
bp->b_repcnt = count;
htstrategy(bp)
register struct buf *bp;
{
- register int unit = HTUNIT(bp->b_dev);
- register struct mba_info *mi = htinfo[unit];
+ register struct mba_device *mi = htinfo[HTUNIT(bp->b_dev)];
register struct buf *dp;
- register struct ht_softc *sc = &ht_softc[unit];
+ register int s;
bp->av_forw = NULL;
dp = &mi->mi_tab;
- (void) spl5();
+ s = spl5();
if (dp->b_actf == NULL)
dp->b_actf = bp;
else
dp->b_actl = bp;
if (dp->b_active == 0)
mbustart(mi);
- (void) spl0();
+ splx(s);
}
htustart(mi)
- register struct mba_info *mi;
+ register struct mba_device *mi;
{
register struct htdevice *htaddr =
(struct htdevice *)mi->mi_drv;
register struct buf *bp = mi->mi_tab.b_actf;
- int unit = HTUNIT(bp->b_dev);
- register struct ht_softc *sc = &ht_softc[unit];
+ register struct tu_softc *sc = &tu_softc[TUUNIT(bp->b_dev)];
daddr_t blkno;
htaddr->httc = sc->sc_dens;
+ if (bp == &chtbuf[HTUNIT(bp->b_dev)] && bp->b_command == HT_SENSE) {
+ htaddr->htcs1 = HT_SENSE|HT_GO;
+ mbclrattn(mi);
+ }
sc->sc_dsreg = htaddr->htds;
sc->sc_erreg = htaddr->hter;
sc->sc_resid = htaddr->htfc;
bp->b_flags |= B_ERROR;
return (MBU_NEXT);
}
- if (bp != &chtbuf[unit]) {
+ if (bp != &chtbuf[HTUNIT(bp->b_dev)]) {
if (dbtofsb(bp->b_blkno) > sc->sc_nxrec) {
bp->b_flags |= B_ERROR;
bp->b_error = ENXIO;
- goto next;
- } else if (dbtofsb(bp->b_blkno) == sc->sc_nxrec &&
+ return (MBU_NEXT);
+ }
+ if (dbtofsb(bp->b_blkno) == sc->sc_nxrec &&
bp->b_flags&B_READ) {
bp->b_resid = bp->b_bcount;
clrbuf(bp);
- goto next;
- } else if ((bp->b_flags&B_READ)==0)
+ return (MBU_NEXT);
+ }
+ if ((bp->b_flags&B_READ)==0)
sc->sc_nxrec = dbtofsb(bp->b_blkno) + 1;
} else {
- if (bp->b_command == HT_SENSE) {
- T(10)("sense complete\n");
+ if (bp->b_command == HT_SENSE)
return (MBU_NEXT);
- }
if (bp->b_command == HT_REW)
sc->sc_flags |= H_REWIND;
else
htaddr->htfc = -bp->b_bcount;
htaddr->htcs1 = bp->b_command|HT_GO;
- T(10)("started cmd %d\n", bp->b_command);
return (MBU_STARTED);
}
if ((blkno = sc->sc_blkno) == dbtofsb(bp->b_blkno)) {
htaddr->htfc = -bp->b_bcount;
if ((bp->b_flags&B_READ) == 0) {
- if (mi->mi_tab.b_errcnt)
- if (sc->sc_flags & H_ERASED)
- sc->sc_flags &= ~H_ERASED;
- else {
+ if (mi->mi_tab.b_errcnt) {
+ if ((sc->sc_flags & H_ERASED) == 0) {
sc->sc_flags |= H_ERASED;
htaddr->htcs1 = HT_ERASE | HT_GO;
return (MBU_STARTED);
}
+ sc->sc_flags &= ~H_ERASED;
+ }
if (htaddr->htds & HTDS_EOT) {
bp->b_resid = bp->b_bcount;
+ bp->b_flags |= B_ERROR;
return (MBU_NEXT);
}
}
}
if (blkno < dbtofsb(bp->b_blkno)) {
htaddr->htfc = blkno - dbtofsb(bp->b_blkno);
- T(10)("spacing fwd %d\n", MASKREG(htaddr)->htfc);
htaddr->htcs1 = HT_SFORW|HT_GO;
} else {
htaddr->htfc = dbtofsb(bp->b_blkno) - blkno;
- T(10)("spacing back %d\n", MASKREG(htaddr)->htfc);
htaddr->htcs1 = HT_SREV|HT_GO;
}
return (MBU_STARTED);
-next:
- iodone(bp);
- return (MBU_NEXT);
}
-/*
- * data transfer interrupt - must be read or write
- */
-/*ARGSUSED*/
-htdtint(mi, mbasr)
- register struct mba_info *mi;
- int mbasr;
+htdtint(mi, mbsr)
+ register struct mba_device *mi;
+ int mbsr;
{
register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv;
register struct buf *bp = mi->mi_tab.b_actf;
- register struct ht_softc *sc;
- int ds, er;
+ register struct tu_softc *sc;
+ int ds, er, mbs;
- sc = &ht_softc[HTUNIT(bp->b_dev)];
+ sc = &tu_softc[TUUNIT(bp->b_dev)];
ds = sc->sc_dsreg = MASKREG(htaddr->htds);
er = sc->sc_erreg = MASKREG(htaddr->hter);
sc->sc_resid = MASKREG(htaddr->htfc);
+ mbs = mbsr;
sc->sc_blkno++;
if((bp->b_flags & B_READ) == 0)
sc->sc_flags |= H_WRITTEN;
- if ((ds&(HTDS_ERR|HTDS_MOL)) != HTDS_MOL ||
- mbasr & MBAEBITS) {
+ if ((ds&(HTDS_ERR|HTDS_MOL)) != HTDS_MOL || mbs & MBSR_EBITS) {
htaddr->htcs1 = HT_DCLR|HT_GO;
- if (bp == &rhtbuf[HTUNIT(bp->b_dev)])
+ mbclrattn(mi);
+ if (bp == &rhtbuf[HTUNIT(bp->b_dev)]) {
er &= ~HTER_FCE;
+ mbs &= ~(MBSR_DTABT|MBSR_MBEXC);
+ }
if (bp->b_flags & B_READ && ds & HTDS_PES)
er &= ~(HTER_CSITM|HTER_CORCRC);
- if (er&HTER_HARD ||
- mbasr&MBAEBITS || (ds&HTDS_MOL) == 0 ||
- sc->sc_erreg && ++mi->mi_tab.b_errcnt >= 7) {
+ if (er&HTER_HARD || mbs&MBSR_EBITS || (ds&HTDS_MOL) == 0 ||
+ er && ++mi->mi_tab.b_errcnt >= 7) {
if ((ds & HTDS_MOL) == 0 && sc->sc_openf > 0)
sc->sc_openf = -1;
- printf("ht%d: hard error bn%d mbasr=%b er=%b\n",
- HTUNIT(bp->b_dev), bp->b_blkno,
- mbasr, mbasr_bits,
- MASKREG(htaddr->hter), HTER_BITS);
+ if ((er&HTER_HARD) == HTER_FCE &&
+ (mbs&MBSR_EBITS) == (MBSR_DTABT|MBSR_MBEXC) &&
+ (ds&HTDS_MOL))
+ goto noprint;
+ printf("tu%d: hard error bn%d mbsr=%b er=%b ds=%b\n",
+ TUUNIT(bp->b_dev), bp->b_blkno,
+ mbsr, mbsr_bits,
+ sc->sc_erreg, hter_bits,
+ sc->sc_dsreg, htds_bits);
+noprint:
bp->b_flags |= B_ERROR;
return (MBD_DONE);
}
return (MBD_DONE);
}
-/*
- * non-data-transfer interrupt
- */
htndtint(mi)
- register struct mba_info *mi;
+ register struct mba_device *mi;
{
register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv;
register struct buf *bp = mi->mi_tab.b_actf;
- register struct ht_softc *sc;
+ register struct tu_softc *sc;
int er, ds, fc;
- sc = &ht_softc[HTUNIT(bp->b_dev)];
- ds = sc->sc_dsreg = MASKREG(htaddr->htds);
- er = sc->sc_erreg = MASKREG(htaddr->hter);
- sc->sc_resid = MASKREG(htaddr->htfc);
- if (sc->sc_erreg)
+ ds = MASKREG(htaddr->htds);
+ er = MASKREG(htaddr->hter);
+ fc = MASKREG(htaddr->htfc);
+ if (er) {
htaddr->htcs1 = HT_DCLR|HT_GO;
+ mbclrattn(mi);
+ }
+ if (bp == 0)
+ return (MBN_SKIP);
+ sc = &tu_softc[TUUNIT(bp->b_dev)];
+ sc->sc_dsreg = ds;
+ sc->sc_erreg = er;
+ sc->sc_resid = fc;
if (bp == &chtbuf[HTUNIT(bp->b_dev)]) {
- if (bp->b_command == HT_REWOFFL)
+ switch (bp->b_command) {
+ case HT_REWOFFL:
/* offline is on purpose; don't do anything special */
ds |= HTDS_MOL;
- else if (bp->b_resid == HT_SREV &&
- er == (HTER_NEF|HTER_FCE) &&
- ds&HTDS_BOT && bp->b_bcount == INF)
- er &= ~HTER_NEF;
+ break;
+ case HT_SREV:
+ /* if backspace file hit bot, its not an error */
+ if (er == (HTER_NEF|HTER_FCE) && ds&HTDS_BOT &&
+ bp->b_repcnt == INF)
+ er &= ~HTER_NEF;
+ break;
+ }
er &= ~HTER_FCE;
if (er == 0)
ds &= ~HTDS_ERR;
if ((ds & (HTDS_ERR|HTDS_MOL)) != HTDS_MOL) {
if ((ds & HTDS_MOL) == 0 && sc->sc_openf > 0)
sc->sc_openf = -1;
- printf("ht%d: hard error bn%d er=%b ds=%b\n",
- HTUNIT(bp->b_dev), bp->b_blkno,
- sc->sc_erreg, HTER_BITS, sc->sc_dsreg, HTDS_BITS);
+ printf("tu%d: hard error bn%d er=%b ds=%b\n",
+ TUUNIT(bp->b_dev), bp->b_blkno,
+ sc->sc_erreg, hter_bits, sc->sc_dsreg, htds_bits);
bp->b_flags |= B_ERROR;
return (MBN_DONE);
}
return (MBN_DONE);
}
if (ds & HTDS_TM)
- if (sc->sc_blkno > dbtofsb(bp->b_blkno)) {/* reversing */
+ if (sc->sc_blkno > dbtofsb(bp->b_blkno)) {
sc->sc_nxrec = dbtofsb(bp->b_blkno) - fc;
sc->sc_blkno = sc->sc_nxrec;
- } else { /* spacing forward */
+ } else {
sc->sc_blkno = dbtofsb(bp->b_blkno) + fc;
sc->sc_nxrec = sc->sc_blkno - 1;
}
htphys(dev)
dev_t dev;
{
- register int unit;
- register struct ht_softc *sc;
+ register int htunit;
+ register struct tu_softc *sc;
+ register struct mba_device *mi;
daddr_t a;
- unit = HTUNIT(dev);
- if (unit >= NHT) {
+ htunit = HTUNIT(dev);
+ if (htunit >= NHT || (mi = htinfo[htunit]) == 0 || mi->mi_alive == 0) {
u.u_error = ENXIO;
return;
}
a = u.u_offset >> 9;
- sc = &ht_softc[unit];
+ sc = &tu_softc[TUUNIT(dev)];
sc->sc_blkno = dbtofsb(a);
sc->sc_nxrec = dbtofsb(a)+1;
}
caddr_t addr;
int flag;
{
- register unit = HTUNIT(dev);
- register struct ht_softc *sc = &ht_softc[unit];
- register struct buf *bp = &chtbuf[unit];
+ register struct tu_softc *sc = &tu_softc[TUUNIT(dev)];
+ register struct buf *bp = &chtbuf[HTUNIT(dev)];
register callcount;
int fcount;
struct mtop mtop;
u.u_error = EIO;
break;
}
- if ((chtbuf[HTUNIT(bp->b_dev)].b_flags&B_ERROR) ||
- sc->sc_dsreg&HTDS_BOT)
+ if ((bp->b_flags&B_ERROR) || sc->sc_dsreg&HTDS_BOT)
break;
}
geterror(bp);
mtget.mt_dsreg = sc->sc_dsreg;
mtget.mt_erreg = sc->sc_erreg;
mtget.mt_resid = sc->sc_resid;
+ mtget.mt_type = MT_ISHT;
if (copyout((caddr_t)&mtget, addr, sizeof(mtget)))
u.u_error = EFAULT;
return;
htdump()
{
- register struct mba_info *mi;
+ register struct mba_device *mi;
register struct mba_regs *mp;
register struct htdevice *htaddr;
int blk, num;
#define phys(a,b) ((b)((int)(a)&0x7fffffff))
if (htinfo[0] == 0)
return (ENXIO);
- mi = phys(htinfo[0], struct mba_info *);
+ mi = phys(htinfo[0], struct mba_device *);
mp = phys(mi->mi_hd, struct mba_hd *)->mh_physmba;
-#if VAX780
- mbainit(mp);
+ mp->mba_cr = MBCR_IE;
htaddr = (struct htdevice *)&mp->mba_drv[mi->mi_drive];
htaddr->httc = HTTC_PDP11|HTTC_1600BPI;
htaddr->htcs1 = HT_DCLR|HT_GO;
start += blk;
num -= blk;
}
- htwait(htaddr);
- htaddr->htcs1 = HT_REW|HT_GO;
hteof(htaddr);
hteof(htaddr);
+ htwait(htaddr);
+ if (htaddr->htds&HTDS_ERR)
+ return (EIO);
+ htaddr->htcs1 = HT_REW|HT_GO;
+ return (0);
}
htdwrite(dbuf, num, htaddr, mp)