Message-ID: <5152D670.3000707@broadcom.com> (sfid-20130327_122241_880067_FAED0A8E)
Date: Wed, 27 Mar 2013 12:22:24 +0100
From: "Arend van Spriel" <arend@broadcom.com>
MIME-Version: 1.0
To: "John Talbut" <jt@dpets.co.uk>
cc: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= <zajec5@gmail.com>,
	"Hauke Mehrtens" <hauke@hauke-m.de>, linux-wireless@vger.kernel.org
Subject: Re: brcmsmac in kernel driver on a Samsung NC110
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On 03/27/2013 11:45 AM, John Talbut wrote:
> 
> 
> On 27/03/13 10:33, Rafał Miłecki wrote:
>> 2013/3/27 John Talbut <jt@dpets.co.uk>:
>>> On 27/03/13 07:46, Rafał Miłecki wrote:
>>>> 2013/3/26 Arend van Spriel <arend@broadcom.com>:
>>>>> On 03/26/2013 08:48 PM, John Talbut wrote:
>>>>>> echo "14e4 4357" > /sys/bus/pci/drivers/bcma-pci-bridge/new_id
>>>>>> bash: /sys/bus/pci/drivers/bcma-pci-bridge/new_id: No such file or directory
>>>>>
>>>>> This could mean you do not have CONFIG_BCMA_HOST_PCI=y in your .config
>>>>
>>>> Exactly. Make sure you have CONFIG_BCMA_HOST_PCI=y and that your
>>>> host_pci.c is not modified/hacked/whatever.
>>>>
>>>> You can compare it with
>>>> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/bcma/host_pci.c
>>>> bcma_pci_bridge_tbl.
>>>>
>>> OK, thanks, I have recompiled the kernel with CONFIG_BCMA_HOST_PCI=y and
>>> we have some progress.
>>>
>>> ls /sys/bus/bcma/devices
>>> bcma0:0
>>>
>>> lspci -d 14e4: -v
>>> now has a line:
>>> Kernel driver in use: bcma-pci-bridge
>>>
>>> host_pci.c is the same as torvalds.
>>>
>>> However, kernel log includes:
>>> brcmsmac bcma0:0: firmware: agent aborted loading brcm/bcm43xx-0.fw (not
>>> found?)
>>> ieee80211 phy0: brcmsmac: Failed to find firmware usually in
>>> /lib/firmware/brcm
>>> brcmsmac: brcms_bcma_probe: brcms_attach failed!
>>
>> "Failed to find firmware". You didn't tell us if you have firmware installed.
>> ls /lib/firmware/brcm/
>> http://wireless.kernel.org/en/users/Drivers/brcm80211#Firmware_installation
>>
> Sorry, meant to do that:
> ls /lib/firmware/brcm/
> bcm43xx-0.fw bcm43xx_hdr-0.fw
> 

Do you have a ramdisk during boot? I suspect brcmsmac does request the
firmware before the root filesystem is mounted.

Gr. AvS