Date: Tue, 24 Jan 2006 20:54:30 +0000 (GMT) From: wpaul@FreeBSD.ORG (Bill Paul) To: m.lyubich@suzlon.de (Mykhailo Lyubich) Cc: freebsd-stable@freebsd.org Subject: Re: Broadcomm BCM4401-B0 and memory upgrade issue. Message-ID: <20060124205430.591DD16A423@hub.freebsd.org> In-Reply-To: <2BB1D847970ED7459EAA23DAB225073714FCE1@hrosvr02.suzlon.de> from Mykhailo Lyubich at "Jan 24, 2006 01:05:16 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
> Hello,
> After the memory upgrade on my Laptop (HP nx5000) FreeBSD 6.0 stable, the
> driver for NIC bfe0 (Broadcom BCM4401-B0) stops working. The NIC LED lights
> are on. The bfe0 interface is up and active. However, I got a permanent
> message on the console:
> bfe0: watching timeout -- resetting.
[...]
> The problem occur only if the upgraded memory (RAM) exceeds 1GB. It does not
> depend on the manufacturer of the memory chips and the number of occupied
> slots. I already tried 2 1GB modules from Infineon DDR400 CL3 and two
> modules from Crucial DDR333, CL2.5. It also does not depend on ACPI.
> What should be my next steps, in order to get NIC working?
This problem has a familiar ring to it. Unfortunately, I don't own any
machines that have this chipset built in, and they don't make any standalone
cards that have it so I can't buy one. This means I can't test it myself.
However, you can try the following:
- Bring up /sys/dev/bfe/if_bfe.c in your favorite editor.
- Find the bfe_dma_alloc() routine, and you should see code that looks
like this:
static int
bfe_dma_alloc(device_t dev)
{
struct bfe_softc *sc;
int error, i;
sc = device_get_softc(dev);
/* parent tag */
error = bus_dma_tag_create(NULL, /* parent */
PAGE_SIZE, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR_32BIT, /* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, /* maxsize */
BUS_SPACE_UNRESTRICTED, /* num of segments */
BUS_SPACE_MAXSIZE_32BIT, /* max segment size */
BUS_DMA_ALLOCNOW, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->bfe_parent_tag);
- Change it to look like this:
static int
bfe_dma_alloc(device_t dev)
{
struct bfe_softc *sc;
int error, i;
sc = device_get_softc(dev);
/* parent tag */
error = bus_dma_tag_create(NULL, /* parent */
PAGE_SIZE, 0, /* alignment, boundary */
/* change this -> */ 0x3E7FFFFF /*BUS_SPACE_MAXADDR*/, /* lowaddr */
BUS_SPACE_MAXADDR_32BIT, /* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, /* maxsize */
BUS_SPACE_UNRESTRICTED, /* num of segments */
BUS_SPACE_MAXSIZE_32BIT, /* max segment size */
BUS_DMA_ALLOCNOW, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->bfe_parent_tag);
- Save if_bfe.c
- Recompile if_bfe.ko and/or your kernel, test it, and report back what
happens.
Wait, let me say that last part again: REPORT BACK WHAT HAPPENS! I hate
it when I send people things to test and they vanish into a black hole,
never to be heard from again.
I suspect this chipset has a DMA limitation that prevents it from
performing DMA to/from any addresses outside the first 1GB of RAM.
Curiously, I ran into this with a Linksys wireless NIC with the
NDISulator, which is based on a Broadcom chipset too (802.11b only).
> Can I try NDIS for this NIC?
The NDISulator is known to work with this chip. But try the fix above
first.
-Bill
--
=============================================================================
-Bill Paul (510) 749-2329 | Senior Engineer, Master of Unix-Fu
wpaul@windriver.com | Wind River Systems
=============================================================================
<adamw> you're just BEGGING to face the moose
=============================================================================
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060124205430.591DD16A423>