wpi: "Radio transmitter is turned off"

Thu Jan 17 12:09:48 PST 2008

Benjamin Close wrote:
> Frank Staals wrote:
>> Benjamin Close wrote:
>>
<snip>
>> Hmm I was planning on starting a new thread on it but my problem is 
>> somewhat related: My laptop (Dell Latitude D630 running a 7.0 build 
>> from a week ago ) completely locks up when trying to configure my 
>> wlan card (which is using wpi ) when the hardware switch is turned 
>> off. I'll do some tests if I can find out at what specific point it 
>> goes wrong. Any other people having trouble with this ?
>>
>>
>> Regards,
>>
> Can you please enable debug on wpi and send me your logs.
>
> sysctl debug.wpi=-2
> then: ifconfig wpi0 up
>
> Cheers,
>  Benjamin
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Hmm the following seems to be the case. If I disable wlan with the 
hardware-switch and do a 'ifconfig wpi0 up' I get the message that the 
wpi0 adapter is turned off (full debug output below). However by default 
I use a small script to setup my wlan connection which immediately does 
'ifconfig wpi0 <ip> ssid <ssid>' which causes a system crash.

frank at Rena# uname -a
FreeBSD Rena.FStaals.net 7.0-PRERELEASE FreeBSD 7.0-PRERELEASE #0: Mon 
Jan  7 12:28:45 CET 2008     
frank at Rena.FStaals.net:/usr/obj/usr/src/sys/RENAKERNEL  i386

Debug output in /var/log/messages when doing a "ifconfig wpi0 up" with 
switch off ( with debug.wpi=-2 )

Jan 17 20:49:53 Rena kernel: Disabling Firmware execution
Jan 17 20:49:53 Rena kernel: NEWSTATE:INIT
Jan 17 20:49:53 Rena kernel: Resetting the card - clearing any uploaded 
firmware
Jan 17 20:49:53 Rena kernel: Attempting Loading Firmware from wpi_fw module
Jan 17 20:49:53 Rena kernel: Firmware Version: Major 2, Minor 14, Driver 4,
Jan 17 20:49:53 Rena kernel: runtime (text: 80524, data: 32768) init 
(text: 2668, data 32768) boot (text 900)
Jan 17 20:49:53 Rena kernel: rtext 0xf802020
Jan 17 20:49:53 Rena kernel: rdata 0x0
Jan 17 20:49:53 Rena kernel: itext 0xf802020
Jan 17 20:49:53 Rena kernel: idata 0x0
Jan 17 20:49:53 Rena kernel: btext 0xf802020
Jan 17 20:49:53 Rena kernel: Loading microcode  size 0x384
Jan 17 20:49:53 Rena kernel: firmware status=0xffff0000, val=0x40400000, 
result=0x40400000
Jan 17 20:49:53 Rena kernel: Status Match! - ntries = 0
Jan 17 20:49:53 Rena kernel: notify qid=80 idx=0 flags=0 type=1 len=36
Jan 17 20:49:53 Rena kernel: microcode alive notification version 10e02 
alive 1
Jan 17 20:49:53 Rena kernel: notify qid=80 idx=0 flags=0 type=1 len=36
Jan 17 20:49:53 Rena kernel: microcode alive notification version 10e02 
alive 1
Jan 17 20:49:53 Rena kernel: Firmware loaded to driver successfully
Jan 17 20:49:53 Rena kernel: wpi0: Radio Transmitter is switched off
Jan 17 20:49:53 Rena kernel: notify qid=80 idx=1 flags=0 type=161 len=8
Jan 17 20:49:53 Rena kernel: state changed to 1
Jan 17 20:49:53 Rena kernel: wpi0: Radio transmitter is switched off

Relevant parts of my wlan-setup script:

================

wlannic=wpi0
###################### general stuff #################
route flush
ifconfig ${lannic} 192.168.200.2

################ stuff for at home ###################

if [ "$1" = "" ] ; then

        echo "Connecting to SSID \"SSID\""
        ifconfig ${wlannic} 192.168.5.5 ssid SSID

        route add default 192.168.5.1

        ifconfig ${wlannic} up

        testcon=0

fi

====================================

Output when running my script with switch off (debug.wpi=-2) after a reboot

===============================

wpi0: Radio Transmitter is switched off
kernel trap 12 with interrupts disabled

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual adress    = 0x14
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc06e078e
stack pointer           = 0x28:0xe52e0b7c
frame pointer           = 0x28:0xe52e0b9c
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = resume, IOPL = 0
current process         = 33 (irq17: wpi0 bge0+)
[thread pid33 tid 100037 ]
Stopped at     propagate_priority+0x1ae:     movl     0x14(%ebx),%eax
db>

db>bt
Tracing pid 33 tid 100037 td 0xc4dc4c60
propagate_priority(c4dc4c60,c4cc1730,c0958b3b,2d8,e52e0c04,...) at 
propagate_priority+0x1ae
turnstile_wait(c4cc1730,c52a5840,0,c4e4edc0,c4e49000,...) at 
turnstile_wait+0x2d8
_mtx_lock_sleep(c4e4a418,c4dc4c60,0,c0b69226,771,...) at 
_mtx_lock_sleep+0x10e
_mtx_lock_flags(c4e4a18,0,c0b69226,771,1aee9e8,...) at_mtx_lock_flags+0x42
wpi_intr(c4e49000,0,c0953cf4,46b,0,...) at wpi_intr+0x22a
ithread_loop(c4e5d610,e52e0d38,0,0,0,000) at ithread_loop+0x1ab
fork_exit(c061690,c4e5d610,e52e0d38) at fork exit+0x99
fork_trampoline() at fork_trampoline+0x8
-- trap0, eip = 0, esp = 0xe52e0d70, ebp = 0 ---
db>

=============================

When I added a bit of debug to my script itself it seemed as if the 
kernel-crash occurs when doing the "ifconfig wpi0 192.168.5.5 ssid 
SSID", the script doesn't reach the part where it brings up the 
interface. Hope this information helps

Regards,

-- 
-Frank Staals