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Deal with devices that are slow to get off the bus.

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This commit is contained in:
gwr 1996-03-18 23:09:02 +00:00
parent 6c53a8d22f
commit 79eb9fbf61
1 changed files with 19 additions and 2 deletions
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21
sys/dev/ic/ncr5380sbc.c
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@ -1,4 +1,4 @@
/* $NetBSD: ncr5380sbc.c,v 1.8 1996/03/07 15:00:17 christos Exp $ */
/* $NetBSD: ncr5380sbc.c,v 1.9 1996/03/18 23:09:02 gwr Exp $ */
/*
* Copyright (c) 1995 David Jones, Gordon W. Ross
@ -2329,8 +2329,25 @@ do_actions:
if (act_flags & ACT_DISCONNECT) {
/*
* The device has dropped BSY (or will soon).
* Return and let ncr5380_sched() do its thing.
* We have to wait here for BSY to drop, otherwise
* the next command may decide we need a bus reset.
*/
timo = ncr5380_wait_nrq_timo; /* XXX */
for (;;) {
if (!SCI_BUSY(sc))
goto busfree;
if (--timo <= 0)
break;
delay(2);
}
/* Device is sitting on the bus! */
printf("%s: SCSI job did not finish, resetting...\n",
sc->sc_dev.dv_xname);
ncr5380_reset_scsibus(sc);
busfree:
NCR_TRACE("machine: discon, waited %d\n",
ncr5380_wait_nrq_timo - timo);
*sc->sci_icmd = 0;
*sc->sci_mode = 0;
*sc->sci_tcmd = PHASE_INVALID;