A Linux driver for the Broadcom 43xx wireless chip

Vince Radice | 9 Feb 20:00

Wireless Problem

Hi,

     I am having a problem trying to get a Netgear WNA3100 adapter 
working.  I have probably been through 100+ posts and threads trying to 
figure out what is happening.  I have attached two files.  One contains 
the output from dmesg.  The other has the output from several commands 
as requested in the doc.

     I have the latest of all of the commonly used software - 
ndiswrapper, Broadcom STA, Fedora FC16 with all updates, b43-fwcutter, 
and a lot more that I can't remember.

     The pc I am using has an ethernet connection.  I am trying to get 
the wireless working there.  I am not able to successfully connect to my 
home wireless network.  I can somewhat connect by manually assigning the 
IP address.  It will connect and assign an IP address but I can't do 
anything.  If I try ping, I get host unreachable.

     My question stems from a lack of what to do.  Looking at your 
documentation, I see references to b43-fwcutter.  Do I have to do 
something with that program? I have read what it does, but no where have 
I read anything about me having to do something to get the firmware.

     Another question is which drivers should I be using - Broadcom STA, 
b43, or ndiswrapper with windows drivers for xp?  I have tried to get 
all of these working at some point.  I may have tried running several at 
the same time as I don't know how to check what is being used.  I can 
list what is installed.

     Should I open a thread some place?  If so, I was thinking the

(Continue reading)

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Rafał Miłecki | 3 Feb 11:04

Re: BCM5354 SoC with LP Phy Wifi

W dniu 2 lutego 2012 22:30 użytkownik Chris Martin <chris <at> martin.cc> napisał:
> I have a device with a 5354 that I'm happy to donate.
> Can you let forward me a shipping address

Some time ago I was even trying to buy one but couldn't (it's a little
old hardware).

Let's first see what Hauke will discover. He's quite experienced
hacker, let's give him a chance :)

--

-- 
Rafał

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финансовый менеджмент | 1 Feb 14:17

Практическое бюджетирование

Attachment (Бюджетирование.doc): application/msword, 35 KiB

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Hauke Mehrtens | 30 Jan 20:37

Re: BCM5354 SoC with LP Phy Wifi

Hi William,

On 01/30/2012 04:39 PM, William R Agosto Padilla wrote:
> Mr. Hauke,
> 
> I am new to the reverse engineering process. However I am working on a
> project that
> requires me to use printk statements in the b43 device driver code, so I
> can see how it is
> really working during initialization, resetting, and suspension of the
> networking process. 
> 
> The first problem that I encountered was finding the b43 source code for
> download.
> I was only able to find the assembly code for the b43 firmware. Do you
> know of a specific download
> location where I can get the entire b43's ''C'' source code?
Just go to https://www.kernel.org/ and download the Linux kernel it has
b43 included in it in drivers/net/wireless/b43 or use
http://wireless.kernel.org/en/users/Download/stable/

>  Reading
> your email I realized that you
> have already done what I will be attempting to do. Mainly, using printk
> statements inside the b43 code.
> I have been at this for a couple of months without any luck. Would you
> mind if I ask a few questions 
> about the way you went about on doing so? Or advice on how to do it?
> 
> Did you added the printk statements into the b43 source code or the b43
> firmware code?
I do not have access to the source code of the broadcom firmware, but
there is an open source project developing an open Source firmware
http://www.ing.unibs.it/~openfwwf/
>I would like to try
> something similar. As I mentioned earlier, I was not able to see the
> b43's 'C' source code with my
> Linux Ubuntu 11.10 distribution. I found a copy of the firmware source
> code with the
> assembly language, etc. Is that the code that you used for the printk
> statements? 
I am just working on the driver and treating the firmware as a black box.
> I thought that since the b43 driver is included in the kernel that
> Ubuntu 11.10 has, it 
> would also include the source code--no luck with that.
> 
> Any insight that you can share would be very much appreciated.
> 
> Cheers
> 
> William

Hauke

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Hauke Mehrtens | 29 Jan 23:12

BCM5354 SoC with LP Phy Wifi

I got a device with a BCM5354 SoC and a LP-Phy Wifi core on it. With
current b43 it still fails with Out of memory when using a recent
firmware 666.2 and works with an old firmware 410.2160. I tried DMA and
PIO mode and had the same results. I added some printk's into the code
and implemented some parts b43 does not have but the Braodcom sdk and
brcmsmac has in the dma code, but I haven't resolved the issue.

I found out the error occurs when send some packages doing "ifconfig
wlan0 up" does not result in any problems, but when I try to scan with
"iw wlan0 scan" it oopes very soon. The problem seams to be related to
TX as there are many packages received, but the oops occurs after 4
calls to b43_dma_tx()

Larry, you wrote some more LP spec based on a newer driver is there a
list with updated docs or should I manually look into all packages if I
want to implement it like it is in the new wl driver.
As I see there are also many parts not implemented, but described in the
spec so looking over the hole code is probably needed.
My device has a sprom of revision 3 and not the expected version 8, does
this cause any trouble?

Hauke.

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Hauke Mehrtens | 28 Jan 19:25

Device Database

While working on ssb and bcma, I often do not know if some branch
defined in the open source part of the Broacom SDK is taken only by
devices supported by ssb or bcma or both.
A database with all devices support by bcma, ssb and the Broadcom SDK
(pci(e) cards and SoCs) with the cores and their revs found on them, the
chip id and rev, if they have a pmu and what rev and so on.
I would like to start with such a database, but I do not know where.
Should I place it on a subpage of
http://linuxwireless.org/en/users/Drivers/b43 , but it should also
contain SoC which are not really related to b43 or should I place it
somewhere on http://bcm-v4.sipsolutions.net/ ?

Hauke

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Antonio Messina | 26 Jan 23:53

b43 module doesn't work after suspend

Hi all,

After suspend to ram my wifi doesn't work. Unloading the `b43' module 
and re-loading after resume "fix" the issue, but it would be better if 
it will deal with the suspend/resume cycle smoothly.

My card (MacBookpro8,1):
03:00.0 Network controller: Broadcom Corporation BCM4331 802.11a/b/g/n 
(rev 02)

Kernel: 3.2.1 vanilla x86_64
Distro: Debian testing
b43 firmware: 666.2 (2011-02-23 01:15:07)

.a.

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zajec5 Gazeta.pl | 19 Jan 14:09

Another ML test

Sent from not-subscribed address

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francesco.gringoli | 18 Jan 16:05

A-phy

Larry, Rafal,

maybe this is not a new question on the list but I'm a little bit confused about a-phy support. I read on the
http://bcm-v4.sipsolutions.net/802.11/Multiband page that a-phy should be supported on 14e4:4319
which is pointed out as being a BCM4318, and 14e4:4312 that is BCM4311 instead. On
http://linuxwireless.org/en/users/Drivers/b43 I also read that "The 802.11a part of the 4311 is not
supported" and, in fact, I have a couple of devices which lspci displays as

03:00.0 Network controller: Broadcom Corporation BCM4312 802.11a/b/g (rev 01)
03:00.0 0280: 14e4:4312 (rev 01)

and dmesg says:
[  428.174190] b43-phy1: Broadcom 4311 WLAN found (core revision 10)
[  428.216031] b43-phy1 debug: Found PHY: Analog 4, Type 2, Revision 8
[  428.216055] b43-phy1 debug: Found Radio: Manuf 0x17F, Version 0x2050, Revision 2

And, in fact, a-phy is not activated (it actually seems completely disabled from initialization code).

So, is there any device I can buy for which b43 supports a-phy If the answer is yes (I really hope so  ) do you
have some pointers on ebay?

Many many thanks!
-Francesco

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George Masgras | 6 Jan 01:48

poor performance with BCM4331 and 3.2

Hello,
 I've been having issues with getting the b43 driver to work reliably
in Ubuntu 11.10 on a MacbookPro 8,1.  The problem is that the driver
seems to be losing connection very often, especially when I have
multiple programs hitting the net. (s.a. Spotify, Firefox and Chrome),
sometimes even causing kernel panics( pre kernel 3.2 final). I'm now
using kernel 3.2 vanilla with compat-wireless-2012-01-03 compiled on
top and I haven't gotten a kernel panic yet but I will post it if I
do.
I've also noticed that the less people in the office using WIFI, the
more stable the connection is (there are ~25 people in the whole
office using WIFI,  10 of them in the same room as me).
Wicd reports between 80-100% signal strength and the encryption is
WPA2 PSK. The AP is a PepWave AP One (3.1.0) and it is behind a wall,
in a room 15ft away from my desk.

more info:

$ uname -a:
Linux geomas-MacBookPro 3.2.0-custom #2 SMP PREEMPT Thu Jan 5 11:14:09
PST 2012 x86_64 x86_64 x86_64 GNU/Linux

$ sudo lspci -vvn|grep 43 -A7:
03:00.0 0280: 14e4:4331 (rev 02)
        Subsystem: 106b:00d6
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 256 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at a0600000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [40] Power Management version 3

dmesg:
http://pastebin.com/0zAQzwVY

kern.log:
http://pastebin.com/Ncf21bWY

Thank you for all the great work!

George

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