diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2006-01-09 23:11:50 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2006-01-09 23:11:50 +0000 |
| commit | d64ef5326fb80790bc0d1c6351a9da8d3faa6ed1 (patch) | |
| tree | 9c02a27179b25ad9d0991b4828f49e587bab6226 /sys/dev/ic | |
| parent | b2acda502157990a13e7fcf66be5bc8b96592861 (diff) | |
Delay a bit after sending a reset command if the chip is an 53C94 or a 53C96;
ok deraadt@ krw@
Diffstat (limited to 'sys/dev/ic')
| -rw-r--r-- | sys/dev/ic/ncr53c9x.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/sys/dev/ic/ncr53c9x.c b/sys/dev/ic/ncr53c9x.c index 6744be1db24..4d0d5f3d921 100644 --- a/sys/dev/ic/ncr53c9x.c +++ b/sys/dev/ic/ncr53c9x.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ncr53c9x.c,v 1.28 2006/01/09 23:09:41 brad Exp $ */ +/* $OpenBSD: ncr53c9x.c,v 1.29 2006/01/09 23:11:49 miod Exp $ */ /* $NetBSD: ncr53c9x.c,v 1.56 2000/11/30 14:41:46 thorpej Exp $ */ /* @@ -442,6 +442,20 @@ ncr53c9x_init(sc, doreset) if (doreset) { sc->sc_state = NCR_SBR; NCRCMD(sc, NCRCMD_RSTSCSI); + /* + * XXX gross... + * On some systems, commands issued too close to a reset + * do not work correctly. We'll force a short delay on + * known-to-be-sensitive chips. + */ + switch (sc->sc_rev) { + case NCR_VARIANT_NCR53C94: + DELAY(600000); /* 600ms */ + break; + case NCR_VARIANT_NCR53C96: + DELAY(100000); /* 100ms */ + break; + } } else { sc->sc_state = NCR_IDLE; ncr53c9x_sched(sc); |