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Fix AHC_NO_TAGS to actually disable tagged queuing, and document.

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This commit is contained in:
abs 2002-08-30 21:54:10 +00:00
parent d1523404bb
commit f951ddc019
2 changed files with 8 additions and 3 deletions
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5
share/man/man4/ahc.4
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@ -1,4 +1,4 @@
.\" $NetBSD: ahc.4,v 1.20 2002/02/13 08:17:30 ross Exp $
.\" $NetBSD: ahc.4,v 1.21 2002/08/30 21:54:12 abs Exp $
.\"
.\" Copyright (c) 1995, 1996, 1997, 1998, 2000
.\" Justin T. Gibbs. All rights reserved.
@ -60,6 +60,9 @@ For CardBus cards:
To allow PCI adapters to use memory mapped I/O if enabled:
.Cd options AHC_ALLOW_MEMIO
.Pp
Disable tagged queuing (avoids hangs on some hardware under load)
.Cd options AHC_NO_TAGS
.Pp
.if 0 \{
To configure one or more controllers to assume the target role:
.Cd options AHC_TMODE_ENABLE \*[Lt]bitmask of units\*[Gt]

6
sys/dev/ic/aic7xxx.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: aic7xxx.c,v 1.89 2002/05/31 17:31:15 thorpej Exp $ */
/* $NetBSD: aic7xxx.c,v 1.90 2002/08/30 21:54:10 abs Exp $ */
/*
* Generic driver for the aic7xxx based adaptec SCSI controllers
@ -88,7 +88,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: aic7xxx.c,v 1.89 2002/05/31 17:31:15 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: aic7xxx.c,v 1.90 2002/08/30 21:54:10 abs Exp $");
#include "opt_ddb.h"
#include "opt_ahc.h"
@ -1330,6 +1330,7 @@ ahc_set_width(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
static void
ahc_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, int enable)
{
#ifndef AHC_NO_TAGS
struct ahc_initiator_tinfo *tinfo;
struct tmode_tstate *tstate;
@ -1342,6 +1343,7 @@ ahc_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, int enable)
tstate->tagenable &= ~devinfo->target_mask;
tstate->tagdisable |= devinfo->target_mask;
}
#endif
}
static void