Return-path: Received: from anchor-post-3.mail.demon.net ([195.173.77.134]:56884 "EHLO anchor-post-3.mail.demon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751725Ab3C0MVy (ORCPT ); Wed, 27 Mar 2013 08:21:54 -0400 Message-ID: <5152E45F.9050003@dpets.co.uk> (sfid-20130327_132157_430189_A8A53F68) Date: Wed, 27 Mar 2013 12:21:51 +0000 From: John Talbut MIME-Version: 1.0 To: Arend van Spriel CC: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Hauke Mehrtens , linux-wireless@vger.kernel.org Subject: Re: brcmsmac in kernel driver on a Samsung NC110 References: <51514F1B.1080207@dpets.co.uk> <5151639F.4010700@broadcom.com> <51516BC2.5010004@dpets.co.uk> <515173A4.7030607@broadcom.com> <515179C5.50406@dpets.co.uk> <51517E28.5000303@broadcom.com> <515182C6.5030305@dpets.co.uk> <51518682.7060503@broadcom.com> <515189C6.7070003@dpets.co.uk> <51518E14.3050500@broadcom.com> <5151EC49.9030109@dpets.co.uk> <5151F088.2040408@hauke-m.de> <5151FB85.5080007@dpets.co.uk> <51521A8A.6060900@broadcom.com> <5152C8DB.4080105@dpets.co.uk> <5152CDDB.4010504@dpets.co.uk> <5152D670.3000707@broadcom.com> <5152E0DD.3000001@broadcom.com> In-Reply-To: <5152E0DD.3000001@broadcom.com> Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On 27/03/13 12:06, Arend van Spriel wrote: > On 03/27/2013 12:22 PM, Arend van Spriel wrote: >> On 03/27/2013 11:45 AM, John Talbut wrote: >>> >>> >>> On 27/03/13 10:33, Rafał Miłecki wrote: >>>> 2013/3/27 John Talbut : >>>>> On 27/03/13 07:46, Rafał Miłecki wrote: >>>>>> 2013/3/26 Arend van Spriel : >>>>>>> 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 >>> > > To confirm my suspicion could you try following (as root): > > /sys/bus/bcma/drivers/brcmsmac # echo bcma0:0 > bind > > This should retrigger brcmsmac to get firmware and use the device. > > Regards, > Arend Yes. cd /sys/bus/bcma/drivers/brcmsmac echo bcma0:0 > bind And I now have wlan0. So, how to get the firmware loaded after the root filesystem is mounted? Regards John > >> >> Do you have a ramdisk during boot? I suspect brcmsmac does request the >> firmware before the root filesystem is mounted. >> >> Gr. AvS >> > > >