NetBSD Problem Report #11805

Received: (qmail 27764 invoked from network); 24 Dec 2000 01:21:04 -0000
Message-Id: <200012240119.eBO1JgM01410@router.nw.com>
Date: Sat, 23 Dec 2000 17:19:42 -0800 (PST)
From: mkl@nw.com
Reply-To: mkl@nw.com
To: gnats-bugs@gnats.netbsd.org, mkl@nw.com
Subject: isa_ntwoc hangs on reboot
X-Send-Pr-Version: 3.95

>Number:         11805
>Category:       kern
>Synopsis:       isa_ntwoc hangs on reboot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 24 01:22:00 +0000 2000
>Closed-Date:    Fri Nov 27 20:57:01 +0000 2009
>Last-Modified:  Fri Nov 27 21:00:03 +0000 2009
>Originator:     Charlie Root
>Release:        1.5
>Organization:
>Environment:
System: NetBSD router.nw.com 1.5 NetBSD 1.5 (ROUTER) #4: Thu Dec 21 19:13:26 PST 2000 root@router.nw.com:/usr/src/sys/arch/i386/compile/ROUTER i386


>Description:
	Adding an SDL Riscom/N2 ISA card and configuring the GENERIC kernel to use this
        card causes the system to hang after the "reboot" command is given.
>How-To-Repeat:
	Very repeatable as mentioned above and with non-GENERIC kernels.
>Fix:

	change the shutdown routine to look like the one below (based on pci version of driver):

	in /sys/dev/isa/if_ntwoc_isa.c, add a line to turn off the card:

/*
 * shut down interrupts and DMA, so we don't trash the kernel on warm
 * boot.  Also, lower DTR on each port and disable card interrupts.
 */
static void
ntwoc_isa_shutdown(void *aux)
{
	struct ntwoc_isa_softc *sc = aux;
	u_int16_t mcr;

	/*
	 * shut down the SCA ports
	 */
	sca_shutdown(&sc->sc_sca);

	/*
	 * lower DTR on both ports
	 */
	mcr = bus_space_read_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR);
	mcr |= (NTWOC_MCR_DTR0 | NTWOC_MCR_DTR1);
	bus_space_write_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR, mcr);

	/* turn off the card */
	bus_space_write_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_PCR, 0);
}

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed
State-Changed-By: dsl@NetBSD.org
State-Changed-When: Fri, 27 Nov 2009 20:57:01 +0000
State-Changed-Why:
patch finally applied


From: David Laight <dsl@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/11805 CVS commit: src/sys/dev/isa
Date: Fri, 27 Nov 2009 20:56:29 +0000

 Module Name:	src
 Committed By:	dsl
 Date:		Fri Nov 27 20:56:29 UTC 2009

 Modified Files:
 	src/sys/dev/isa: if_ntwoc_isa.c

 Log Message:
 Add patch from PR/11805


 To generate a diff of this commit:
 cvs rdiff -u -r1.21 -r1.22 src/sys/dev/isa/if_ntwoc_isa.c

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

>Unformatted:

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