* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
- * @(#)ht.c 7.1 (Berkeley) 6/5/86
+ * @(#)ht.c 7.6 (Berkeley) 5/6/88
*/
#include "tu.h"
* see how many rewind interrups we get if we kick when not at BOT
* fixup rle error on block tape code
*/
-#include "../machine/pte.h"
-
#include "param.h"
#include "systm.h"
#include "buf.h"
#include "cmap.h"
#include "uio.h"
#include "tty.h"
+#include "syslog.h"
+#include "../machine/pte.h"
#include "../vax/cpu.h"
#include "mbareg.h"
#include "mbavar.h"
#include "htreg.h"
-struct buf rhtbuf[NHT];
struct buf chtbuf[NHT];
short httypes[] =
{ MBDT_TM03, MBDT_TE16, MBDT_TU45, MBDT_TU77, 0 };
struct mba_device *htinfo[NHT];
+struct mba_slave *tuinfo[NTU];
int htattach(), htslave(), htustart(), htndtint(), htdtint();
struct mba_driver htdriver =
{ htattach, htslave, htustart, 0, htdtint, htndtint,
/* bits in minor device */
#define TUUNIT(dev) (minor(dev)&03)
#define H_NOREWIND 04
-#define H_1600BPI 08
+#define H_DENS(dev) ((minor(dev) >> 3) & 03)
-#define HTUNIT(dev) (tutoht[TUUNIT(dev)])
+#define HTUNIT(dev) (tuinfo[TUUNIT(dev)]->ms_ctlr)
#define INF (daddr_t)1000000L /* a block number that wont exist */
u_short sc_dsreg;
short sc_resid;
short sc_dens;
- struct mba_device *sc_mi;
- int sc_slave;
struct tty *sc_ttyp; /* record user's tty for errors */
+ int sc_blks; /* number of I/O operations since open */
+ int sc_softerrs; /* number of soft I/O errors since open */
} tu_softc[NTU];
-short tutoht[NTU];
/*
* Bits for sc_flags.
struct mba_slave *ms;
int sn;
{
- register struct tu_softc *sc = &tu_softc[ms->ms_unit];
register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv;
htaddr->httc = sn;
if (htaddr->htdt & HTDT_SPR) {
- sc->sc_mi = mi;
- sc->sc_slave = sn;
- tutoht[ms->ms_unit] = mi->mi_unit;
+ tuinfo[ms->ms_unit] = ms;
return (1);
} else
return (0);
}
+int htdens[4] = { HTTC_800BPI, HTTC_1600BPI, HTTC_6250BPI, HTTC_800BPI };
+
htopen(dev, flag)
dev_t dev;
int flag;
{
register int tuunit;
- register struct mba_device *mi;
register struct tu_softc *sc;
+ register struct mba_slave *ms;
int olddens, dens;
tuunit = TUUNIT(dev);
- if (tuunit >= NTU || (mi = htinfo[HTUNIT(dev)]) == 0 ||
- mi->mi_alive == 0)
+ if (tuunit >= NTU || (ms = tuinfo[tuunit]) == NULL ||
+ ms->ms_alive == 0 || htinfo[ms->ms_ctlr]->mi_alive == 0)
return (ENXIO);
if ((sc = &tu_softc[tuunit])->sc_openf)
return (EBUSY);
+ sc->sc_openf = 1;
olddens = sc->sc_dens;
- dens = sc->sc_dens =
- ((minor(dev)&H_1600BPI)?HTTC_1600BPI:HTTC_800BPI)|
- HTTC_PDP11|sc->sc_slave;
+ dens = sc->sc_dens = htdens[H_DENS(dev)] | HTTC_PDP11 | ms->ms_slave;
htcommand(dev, HT_SENSE, 1);
sc->sc_dens = olddens;
if ((sc->sc_dsreg & HTDS_MOL) == 0) {
+ sc->sc_openf = 0;
uprintf("tu%d: not online\n", tuunit);
return (EIO);
}
if ((flag&FWRITE) && (sc->sc_dsreg&HTDS_WRL)) {
+ sc->sc_openf = 0;
uprintf("tu%d: no write ring\n", tuunit);
return (EIO);
}
if ((sc->sc_dsreg & HTDS_BOT) == 0 && (flag&FWRITE) &&
dens != sc->sc_dens) {
+ sc->sc_openf = 0;
uprintf("tu%d: can't change density in mid-tape\n", tuunit);
return (EIO);
}
- sc->sc_openf = 1;
sc->sc_blkno = (daddr_t)0;
sc->sc_nxrec = INF;
sc->sc_flags = 0;
sc->sc_dens = dens;
+ sc->sc_blks = 0;
+ sc->sc_softerrs = 0;
sc->sc_ttyp = u.u_ttyp;
return (0);
}
}
if ((minor(dev)&H_NOREWIND) == 0)
htcommand(dev, HT_REW, 0);
+ if (sc->sc_blks > 100 && sc->sc_softerrs > sc->sc_blks / 100)
+ log(LOG_INFO, "tu%d: %d soft errors in %d blocks\n",
+ TUUNIT(dev), sc->sc_softerrs, sc->sc_blks);
sc->sc_openf = 0;
}
return (MBU_NEXT);
}
if (bp != &chtbuf[HTUNIT(bp->b_dev)]) {
- if (bdbtofsb(bp->b_blkno) > sc->sc_nxrec) {
- bp->b_flags |= B_ERROR;
- bp->b_error = ENXIO;
- return (MBU_NEXT);
- }
- if (bdbtofsb(bp->b_blkno) == sc->sc_nxrec &&
- bp->b_flags&B_READ) {
- bp->b_resid = bp->b_bcount;
- clrbuf(bp);
- return (MBU_NEXT);
+ /* transfer: check positioning */
+ if (bp->b_flags & B_RAW) {
+ /* raw transfer: record position for retry */
+ if (mi->mi_tab.b_errcnt == 0) {
+ sc->sc_blkno = bdbtofsb(bp->b_blkno);
+ sc->sc_nxrec = sc->sc_blkno + 1;
+ }
+ } else {
+ if (bdbtofsb(bp->b_blkno) > sc->sc_nxrec) {
+ bp->b_flags |= B_ERROR;
+ bp->b_error = ENXIO;
+ return (MBU_NEXT);
+ }
+ if (bdbtofsb(bp->b_blkno) == sc->sc_nxrec &&
+ bp->b_flags&B_READ) {
+ bp->b_resid = bp->b_bcount;
+ clrbuf(bp);
+ return (MBU_NEXT);
+ }
+ if ((bp->b_flags&B_READ)==0)
+ sc->sc_nxrec = bdbtofsb(bp->b_blkno) + 1;
}
- if ((bp->b_flags&B_READ)==0)
- sc->sc_nxrec = bdbtofsb(bp->b_blkno) + 1;
} else {
if (bp->b_command == HT_SENSE)
return (MBU_NEXT);
if ((ds&(HTDS_ERR|HTDS_MOL)) != HTDS_MOL || mbs & MBSR_EBITS) {
htaddr->htcs1 = HT_DCLR|HT_GO;
mbclrattn(mi);
- if (bp == &rhtbuf[HTUNIT(bp->b_dev)]) {
+ if (bp->b_flags & B_RAW) {
er &= ~HTER_FCE;
mbs &= ~(MBSR_DTABT|MBSR_MBEXC);
}
return (MBD_RETRY);
}
bp->b_resid = 0;
+ sc->sc_blks++;
+ if (mi->mi_tab.b_errcnt)
+ sc->sc_softerrs++;
if (bp->b_flags & B_READ)
if (ds&HTDS_TM) { /* must be a read, right? */
bp->b_resid = bp->b_bcount;
return (MBN_RETRY);
}
-htread(dev, uio)
- dev_t dev;
- struct uio *uio;
-{
- int errno;
-
- errno = htphys(dev, uio);
- if (errno)
- return (errno);
- return (physio(htstrategy, &rhtbuf[HTUNIT(dev)], dev, B_READ, minphys, uio));
-}
-
-htwrite(dev, uio)
- dev_t dev;
- struct uio *uio;
-{
- int errno;
-
- errno = htphys(dev, uio);
- if (errno)
- return (errno);
- return (physio(htstrategy, &rhtbuf[HTUNIT(dev)], dev, B_WRITE, minphys, uio));
-}
-
-htphys(dev, uio)
- dev_t dev;
- struct uio *uio;
-{
- register int htunit;
- register struct tu_softc *sc;
- register struct mba_device *mi;
- daddr_t a;
-
- htunit = HTUNIT(dev);
- if (htunit >= NHT || (mi = htinfo[htunit]) == 0 || mi->mi_alive == 0)
- return (ENXIO);
- a = uio->uio_offset >> 9;
- sc = &tu_softc[TUUNIT(dev)];
- sc->sc_blkno = bdbtofsb(a);
- sc->sc_nxrec = bdbtofsb(a)+1;
- return (0);
-}
-
/*ARGSUSED*/
htioctl(dev, cmd, data, flag)
dev_t dev;