Re: bcm4400 driver and Dell 8500

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To: James Nobis <quel@quelrod.net>
Date: Wed, 27 Aug 2003 12:02:08 -0400

On Wed, 2003-08-27 at 09:27, James Nobis wrote:
> On Wed, 27 Aug 2003, Kenneth D. Merry wrote:
>
> > On Wed, Aug 27, 2003 at 08:40:25 +0100, Duncan Barclay wrote:
> > > Hello James and Ken,
> > >
> > > Both of you are having real problems with the bcm driver and both of you
> > > have a Dell 8500.
> > >
> > > This is James' dmesg output, which from memory looks very similar to your
> > > Ken?
> > >
> > > > bcm0: <Broadcom 10/100 Base-T Ethernet> mem 0xfaffe000-0xfaffffff irq 11
> > > > at device 0.0 on pci2
> > > > bcm0: Ethernet address: ff:ff:ff:ff:ff:ff
> > > > panic: bcm0: Strange type for core 0xffffffff
> >
> > Yep, the messages I get are identical when I load it as a module.
> >
> > > > I'm running 5.1-current from august 22nd. I can try pulling down the
> > > > latest 5.1 tommorow if you think this might help. This is the same result
> > > > as when I tried the driver from over a month ago.
> > >
> > > We think that the problem is something to do with the PCI configuration of
> > > the machine. The ethernet address being ff:ff:ff:ff:ff:ff indicates that the
> > > memory map is not right.
> > >
> > > > Before sending this email I was going to obtain a backtrace. I recompiled
> > > > with the symbol table and kernel debugger and now the driver appears to
> > > > work fine. Should it work this way?
> > >
> > > Hmm interesting. Ken can you try this and see if the driver then works?
> >
> > I've already got the kernel debugger on. Do you mean changing the module
> > compile somehow so that more symbols are included? (It seems to resolve
> > the function addresses in the module fine.)
> >
>
> compiling with options DDB and makeoptions DEBUG=-g is what i mean

Note, on my 5150, I also have a kernel built with -g. I do not have DDB
compiled in, but I have never tried a kernel without -g. I may be
susceptible to the same "all-ffs" problem.

Joe

>
> > The stack trace from the module load is:
> >
> > panic()
> > bcm_chip_get_core()
> > bcm_chip_reset()
> > bcm_attach()
> > device_probe_and_attach()
> > etc.
> >
> > If I boot a kernel with the bcm driver compiled in, and don't attach to the
> > docking station, it comes up fine until I insert my fxp card in the carbus
> > slot. Then I get the panic in bcm_ring_rx_eof() that I reported last
> > night. FWIW, when I have the driver compiled in, the memory location is
> > identical to location used when the module loads (above), but the ethernet
> > address is properly decoded:
> >
> > bcm0: <Broadcom 10/100 Base-T Ethernet> mem 0xfaffe000-0xfaffffff irq 11 at device 0.0 on pci2
> > bcm0: Ethernet address: 00:0b:db:94:bf:42
> > miibus0: <MII bus> on bcm0
> >
> > If I boot a kernel with the bcm driver compiled in, and don't attach to the
> > docking station, and don't insert my fxp card, I get slightly further. I
> > tried running dhclient, and got:
> >
> > All mbufs or mbuf clusters exhausted, please see tuning(7).
> > bcm0: initialization failed: no memory for rx buffers
> >
> > Then I tried just manually ifconfiging the interface, and it works!
> >
> > Here's what netstat -m says:
> >
> > {erebor:/usr/home/ken:1:0} netstat -nm
> > mbuf usage:
> > GEN cache: 0/0 (in use/in pool)
> > CPU #0 cache: 576/608 (in use/in pool)
> > Total: 576/608 (in use/in pool)
> > Mbuf cache high watermark: 512
> > Maximum possible: 34304
> > Allocated mbuf types:
> > 576 mbufs allocated to data
> > 1% of mbuf map consumed
> > mbuf cluster usage:
> > GEN cache: 0/0 (in use/in pool)
> > CPU #0 cache: 575/584 (in use/in pool)
> > Total: 575/584 (in use/in pool)
> > Cluster cache high watermark: 128
> > Maximum possible: 17152
> > 3% of cluster map consumed
> > 1320 KBytes of wired memory reserved (98% in use)
> > 1 requests for memory denied
> > 0 requests for memory delayed
> > 0 calls to protocol drain routines
> >
> > Performance, once I manually assigned an address seems okay; I was able to
> > ftp a file over from another machine at a little over 11MB/sec.
> >
> > If I insert the fxp card after the bcm driver is configured, the cardbus
> > initialization fails, and then I get the following messages over and over
> > again:
> >
> > "eek j=6, macCurrent 511, con288"
> >
> > At that point I can 't even break into the debugger.
> >
> > That's all the time I have for tinkering with it this morning...
> >
> > Looks like things are working somewhat better, but there is still some
> > weird stuff going on...
> >
> > Ken
> > --
> > Kenneth Merry
> > ken@kdm.org
> >
> I don't have a docking station. The built in ethernet is which uses the
> bcm driver. I only have used it as a module and have not tried otherwise.
>
> -James
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