Difference between revisions of "Libertas driver"

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The libertas driver is a collection of modules providing support for Marvell Technology Group's Libertas chipsets. On this page we will only detail the setup of the driver for the SDIO interface modules compatible with 88w8686 chipset, used for example on the [[Wireless extension board|APF27's wireless extension board]].
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The libertas driver is a collection of modules providing support for Marvell Technology Group's Libertas chipsets. On this page we will only detail the setup of the driver for the SDIO interface modules compatible with 88w8686 chipset, used for example on the [[Wireless extension board|APF27's wireless extension board]], the [[APF51Dev]]  or on [[APF27_PPS]] devt board.
  
 
The Linux drivers are available since 2.6.24 kernel, thanks to the community effort to rewrite Marvell's proprietary drivers.
 
The Linux drivers are available since 2.6.24 kernel, thanks to the community effort to rewrite Marvell's proprietary drivers.
  
 
==Installation==
 
==Installation==
Libertas drivers are already installed on your rootfs (if you built it with an APF27 as target). If not, it's explained [[Talk:Libertas_driver|here]].
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* Libertas drivers are already installed on your rootfs (if you built it with an APF27/PPS/APF51 as target). If not, it's explained [[Talk:Libertas_driver|here]].
The drivers require 2 proprietary firmware to be downloaded to the chipset before use.
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* The drivers require 2 proprietary firmwares to be loaded in the chip before use. If not already present in ''/lib/firmware/'', here is the procedure to follow:
===Firmware (manual install)===
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These firmware can be manually downloaded and installed:
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* get them from David's Woodhouse linux-firmware git repository:
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<pre class="host">
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$ cd somewhere_with_free_space/
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$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/dwmw2/linux-firmware.git linux-firmware_git
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</pre>
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* copy them (version v8) to you TFTP directory (here ''/tftpboot/''):
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<pre class="host">
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$ cp linux-firmware_git/libertas/sd8686_v8.bin /tftpboot/
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$ cp linux-firmware_git/libertas/sd8686_v8_helper.bin /tftpboot/
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</pre>
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* install them on your target (here 192.168.1.2 is my Host IP address):
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<pre class="apf">
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# mkdir -p /lib/firmware/
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# cd /lib/firmware/
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# tftp -g -r sd8686_v8.bin -l sd8686.bin 192.168.1.2
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# tftp -g -r sd8686_v8_helper.bin -l sd8686_helper.bin 192.168.1.2
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# ls -al /lib/firmware/
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drwxr-xr-x    2 root    root            0 Jan  1 01:01 .
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drwxr-xr-x    4 root    root            0 Dec 30  2009 ..
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-rw-r--r--    1 root    root      122800 Jan  1 01:00 sd8686.bin
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-rw-r--r--    1 root    root        2464 Jan  1 01:01 sd8686_helper.bin
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</pre>
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{{Note| You can also try official firmwares got at Marvell website (see Links above)}}
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===Firmware (automatic install)===
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===Firmware installation===
 +
* This is done by default on [[APF51]]. For manual installation, please see [[Talk:Libertas_driver|here]]
 
<pre class="host">
 
<pre class="host">
 
$ make menuconfig
 
$ make menuconfig
 
</pre>
 
</pre>
 
<pre class="config">
 
<pre class="config">
Package Selection for the target --->
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Target packages --->
     Hardware handling / blockdevices and filesystem maintenance --->
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     Hardware handling  --->
         [*]  linux-firmware  --->
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         Firmware  --->
              ...
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            [*]  linux-firmware  --->
                    *** WiFi chipsets ***
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                WiFi firmwares --->
              [*]  Marvell's 88W8686 (Libertas)
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                    [*] Libertas SD 8686 v9
              [*]    SDIO
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                        Firmware version (v9) --->
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              [ ]     GSPI
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</pre>
 
</pre>
 
<pre class="host">
 
<pre class="host">
 
$ make
 
$ make
 
</pre>
 
</pre>
reflash your rootfs
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* reflash your rootfs
  
 
==Usage==
 
==Usage==
Line 75: Line 47:
 
# ifconfig eth1 up
 
# ifconfig eth1 up
 
ADDRCONF(NETDEV_UP): eth1: link is not ready
 
ADDRCONF(NETDEV_UP): eth1: link is not ready
</pre>
 
 
==Wi2Wi chipset==
 
 
===Drivers setup===
 
You have to install Libertas SDIO and MMC drivers to make Wi2Wi chipset work:
 
<pre class="host">
 
$ make linux26-menuconfig
 
</pre>
 
 
<pre class="config">
 
Device drivers  --->
 
    [*] Network device support  --->
 
            Wireless LAN  --->
 
                [*] Wireless LAN (IEEE 802.11)
 
                <M>  Marvell 8xxx Libertas WLAN driver support
 
                < >    Marvell Livertas 8388 USB 802.11b/g cards
 
                <M>    Marvell Libertas 8385 and 8686 SDIO 802.11b/g cards
 
    <M> MMC/SD/SDIO card support  --->
 
              *** MMC/SD/SDIO Card Drivers ***
 
        <M>  MMC block device driver
 
</pre>
 
 
===Initializing the connection===
 
Before creating the Wifi connection, you must load the Libertas SDIO and the MMC modules:
 
<pre class="host">
 
modprobe mxcmmc
 
sleep 1
 
modprobe libertas_sdio
 
</pre>
 
 
===Disconnect from the Wifi===
 
Using the Wi2Wi chipset, you have to unload the MMC driver along with the Libertas SDIO to disconnect from the Wifi:
 
<pre class="host">
 
modprobe -r mxcmmc
 
modprobe -r libertas_sdio
 
</pre>
 
 
===Reset Wi2Wi===
 
To reset the chipset, you have to reset the Wi2Wi GPIO:
 
<pre class="host">
 
source /usr/bin/gpio_helpers.sh
 
 
gpio_mode PE11 1
 
gpio_set_value PE11 0
 
gpio_set_value PE11 1
 
 
</pre>
 
</pre>
  

Latest revision as of 14:08, 21 January 2014

The libertas driver is a collection of modules providing support for Marvell Technology Group's Libertas chipsets. On this page we will only detail the setup of the driver for the SDIO interface modules compatible with 88w8686 chipset, used for example on the APF27's wireless extension board, the APF51Dev or on APF27_PPS devt board.

The Linux drivers are available since 2.6.24 kernel, thanks to the community effort to rewrite Marvell's proprietary drivers.

Installation

  • Libertas drivers are already installed on your rootfs (if you built it with an APF27/PPS/APF51 as target). If not, it's explained here.
  • The drivers require 2 proprietary firmwares to be loaded in the chip before use. If not already present in /lib/firmware/, here is the procedure to follow:

Firmware installation

  • This is done by default on APF51. For manual installation, please see here
$ make menuconfig
Target packages  --->
    Hardware handling  --->
        Firmware  --->
            [*]   linux-firmware  --->
                WiFi firmwares  --->
                    [*] Libertas SD 8686 v9
$ make
  • reflash your rootfs

Usage

  • Load driver:
# modprobe libertas_sdio
lib80211: common routines for IEEE802.11 drivers
libertas_sdio: Libertas SDIO driver
libertas_sdio: Copyright Pierre Ossman
libertas_sdio mmc1:0001:1: firmware: requesting sd8686_helper.bin
libertas_sdio mmc1:0001:1: firmware: requesting sd8686.bin
libertas: 00:19:88:11:2d:b8, fw 0.70.8p0, cap 0x00000000
eth1 (libertas_sdio): not using net_device_ops yet
libertas: eth1: Marvell WLAN 802.11 adapter

If it's not working, you can activate debug like this to report your problem:

# modprobe libertas libertas_debug=0xffffffff
# modprobe libertas_sdio
  • Bring up the corresponding network interface:
# ifconfig eth1 up
ADDRCONF(NETDEV_UP): eth1: link is not ready

Going further

Links