SDIO and DHCP

[Jeff Sutherland]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Tuesday 16 December 2008, Simon Twogood wrote:
> Hell everyone,
>
> I've been having success using the a Libertas SDIO module with Linux
> 2.6.27, but only with static IP addresses. My board is an Atmel
> AT91SAM9263. Has anyone had success obtaining an IP address through
> DHCP on a similar board, or any other board for that matter?
>
> I found a old thread that mentions a similar problem here
> http://lists.infradead.org/pipermail/libertas-dev/2008-May/001526.html ,
> but it seems it was unresolved.
>
> My firmware version is 9.70.3p24. Here's a sample of the the procedure
> I use to reproduce my error:
>
>
> root at mydevice:~$ modprobe libertas_sdio
> libertas_sdio: Libertas SDIO driver
> libertas_sdio: Copyright Pierre Ossman
> firmware: requesting sd8686_helper.bin
> firmware: requesting sd8686.bin
> libertas: 00:19:88:05:11:56, fw 9.70.3p24, cap 0x00000303
> libertas: PREP_CMD: command 0x00a3 failed: 2
> libertas: PREP_CMD: command 0x00a3 failed: 2
> libertas: eth1: Marvell WLAN 802.11 adapter
>
> root at mydevice:~$ ifconfig eth1 up
>
> root at mydevice:~$ iwlist eth1 scan
> eth1      Scan completed :
>            Cell 01 - Address: 00:21:29:71:19:E8
>                      ESSID:"emptynetwork"
>                      Mode:Managed
>                      Frequency:2.437 GHz (Channel 6)
>                      Quality=92/100  Signal level=-58 dBm  Noise
> level=-96 dBm
>                      Encryption key:off
>                      Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18
> Mb/s
>                                24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
>                                12 Mb/s; 48 Mb/s
>
> root at mydevice:~$ iwconfig eth1 essid emptynetwork
>
> root at mydevice:~$ udhcpc -H mydevice -i eth1
> udhcpc (v1.2.1) started
> Sending discover...
> Sending discover...
> Sending discover...
> ------------[ cut here ]------------
> WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0x154/0x240()
> NETDEV WATCHDOG: eth1 (libertas_sdio): transmit timed out
> Modules linked in: libertas_sdio libertas at91_mci
> [<c0025fa0>] (dump_stack+0x0/0x14) from [<c003822c>] (warn_slowpath
> +0x64/0x80)
> [<c00381c8>] (warn_slowpath+0x0/0x80) from [<c0180b0c>] (dev_watchdog
> +0x154/0x240)
>   r3:c394c000 r2:c0238d80
>   r6:c01809b8 r5:c394c000 r4:c027ef34
> [<c01809b8>] (dev_watchdog+0x0/0x240) from [<c0041440>]
> (run_timer_softirq+0x150/0x1e8)
>   r6:c01809b8 r5:00000100 r4:c026f740
> [<c00412f0>] (run_timer_softirq+0x0/0x1e8) from [<c003cf08>]
> (__do_softirq+0x60/0xc8)
>   r7:c0255c80 r6:0000000a r5:c026f544 r4:00000001
> [<c003cea8>] (__do_softirq+0x0/0xc8) from [<c003d258>] (irq_exit
> +0x48/0x50)
>   r7:c0255c80 r6:00000000 r5:c0259ea4 r4:00000001
> [<c003d210>] (irq_exit+0x0/0x50) from [<c0021054>]
> (__exception_text_start+0x54/0x6c)
> [<c0021000>] (__exception_text_start+0x0/0x6c) from [<c0021834>]
> (__irq_svc+0x34/0x60)
> Exception stack(0xc0253f50 to 0xc0253f98)
> 3f40:                                     00000000 0005317f 0005217f
> 60000013
> 3f60: c0023270 c0252000 c001eee8 c0255c80 2001d32c 41069265 2001d2f8
> c0253fa4
> 3f80: 600000d3 c0253f98 c00232b8 c00232c4 60000013 ffffffff
>   r7:c0255c80 r6:00000001 r5:fefff000 r4:ffffffff
> [<c0023270>] (default_idle+0x0/0x5c) from [<c002314c>] (cpu_idle+0x3c/
> 0x58)
> [<c0023110>] (cpu_idle+0x0/0x58) from [<c01d6610>] (rest_init+0x58/0x6c)
>   r5:c0269e10 r4:c0271f88
> [<c01d65b8>] (rest_init+0x0/0x6c) from [<c0008bc8>] (start_kernel
> +0x284/0x2dc)
> [<c0008944>] (start_kernel+0x0/0x2dc) from [<20008034>] (0x20008034)
>   r5:c026a320 r4:00053175
> ---[ end trace 4093a6ca7302871d ]---
> libertas: tx watch dog timeout
> Sending select for 192.168.5.128...
> Sending select for 192.168.5.128...
> Sending select for 192.168.5.128...
> libertas: tx watch dog timeout
> Sending discover...
> Sending discover...
> libertas: tx watch dog timeout
> Sending discover...
> libertas: tx watch dog timeout
> libertas: tx watch dog timeout
> libertas: tx watch dog timeout
> libertas: tx watch dog timeout
> Sending select for 192.168.5.128...
> Sending select for 192.168.5.128...
> Sending select for 192.168.5.128...
> libertas: tx watch dog timeout
> Sending discover...
> Sending discover...

Please try one thing and let us know how you get on: turn on all the debugging 
for the wifi subsystem and libertas module and try again.  This looks 
suspiciously like a problem I encountered with this chipset on another 
platform.

- -Jeff
- -- 
FOM Systems Inc.   www.fomsystems.com
phone:  (USA) +1-330-628-2102 or 800-936-0561, (UK) +44-161-408-3072
mobile: (USA) +1-330-802-1364, (World) +44-7793-827386, Skype: Adekguru
=+=+=+=+=+=+=+=+=+=+=+=+=+=
And He saith unto them, "Follow me, and I will make you fishers of men."
(Matthew 4:19)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iD8DBQFJR/L2vvyQ7TDL7JURAhFBAJ4uW69acdmdP+pid+4mtlN5vo6ZGwCcD7Ea
Hap07Vk+eLcVaoEql+cvsYc=
=7+j2
-----END PGP SIGNATURE-----