Freescale i.mx25 SDIO/Libertas issue

Freescale i.mx25 SDIO/Libertas issue

[Andre Renaud]

Hello,
I am trying to use a Wi2Wi 802.11b/g (W2CBW009S) module attached to an
i.MX25 cpu, specifically the i.MX25 PDK from freescale, although I've
also tried it on a DeviceSolutions Topaz i.MX25. However it is unable to
fully load the driver, leaving me with the following in the logs:
[   30.149097] libertas_sdio mmc0:0001:1: (unregistered net_device):
command 0x00a9 timed out
[   30.153759] libertas_sdio mmc0:0001:1: (unregistered net_device):
Timeout submitting command 0x00a9
[   30.158843] libertas_sdio mmc0:0001:1: (unregistered net_device):
PREP_CMD: command 0x00a9 failed: -110
[   30.164126] libertas_sdio mmc0:0001:1: (unregistered net_device):
CMD_FUNC_INIT cmd failed
This wifi chip is based around the Marvell 8688 core.

I have also tried using an 8686 device, and in that case it is unable to
even complete loading the firmware, failing with the following:
[   14.753132] libertas_sdio: Firmware req_size: 17
[   14.755713] libertas_sdio: failed to load firmware: -5
[   14.759272] libertas_sdio: probe of mmc0:0001:1 failed with error -5
Note: I added the 'req_size: ' debugging message in

Has anyone successfully used the i.MX25 SDIO controller with anything
other than straight MMC cards (which seem to work fine in the setup that
I have)?

Regards,
Andre Renaud

Freescale i.mx25 SDIO/Libertas issue

[Daniel Mack]

On Mon, May 30, 2011 at 3:52 AM, Andre Renaud <andre@bluewatersys.com> wrote:
> Hello,
> I am trying to use a Wi2Wi 802.11b/g (W2CBW009S) module attached to an
> i.MX25 cpu, specifically the i.MX25 PDK from freescale, although I've
> also tried it on a DeviceSolutions Topaz i.MX25. However it is unable to
> fully load the driver, leaving me with the following in the logs:
> [ ? 30.149097] libertas_sdio mmc0:0001:1: (unregistered net_device):
> command 0x00a9 timed out
> [ ? 30.153759] libertas_sdio mmc0:0001:1: (unregistered net_device):
> Timeout submitting command 0x00a9
> [ ? 30.158843] libertas_sdio mmc0:0001:1: (unregistered net_device):
> PREP_CMD: command 0x00a9 failed: -110
> [ ? 30.164126] libertas_sdio mmc0:0001:1: (unregistered net_device):
> CMD_FUNC_INIT cmd failed
> This wifi chip is based around the Marvell 8688 core.
>
> I have also tried using an 8686 device, and in that case it is unable to
> even complete loading the firmware, failing with the following:
> [ ? 14.753132] libertas_sdio: Firmware req_size: 17
> [ ? 14.755713] libertas_sdio: failed to load firmware: -5
> [ ? 14.759272] libertas_sdio: probe of mmc0:0001:1 failed with error -5
> Note: I added the 'req_size: ' debugging message in

I assume this error happens after the driver uploaded the helper
firmware and switched to multi-block transfers?

Which kernel version are you working on? I'm asking because I fixed a
similar bug some months ago which I happend to see an a MX31 CPU with
a 8686 attach to the SDIO bus. The MX3 MMC controller has bug severe
bug in its CRC calculation code which causes multi-block transfers on
a 4-bit bus to fail, and hence the only solution was to switch to a
1-bit bus. But I don't known whether this also affects MX25 cores.

Anyway - this workaround was merged more than a year ago. See if you
have commit 1eb46d ("libertas/sdio: 8686: set ECSI bit for 1-bit
transfers") in your tree.


Daniel

Freescale i.mx25 SDIO/Libertas issue

[Fabio Estevam]

Hi Daniel,

On Mon, May 30, 2011 at 6:50 AM, Daniel Mack <zonque@gmail.com> wrote:
> On Mon, May 30, 2011 at 3:52 AM, Andre Renaud <andre@bluewatersys.com> wrote:
>> Hello,
>> I am trying to use a Wi2Wi 802.11b/g (W2CBW009S) module attached to an
>> i.MX25 cpu, specifically the i.MX25 PDK from freescale, although I've
>> also tried it on a DeviceSolutions Topaz i.MX25. However it is unable to
>> fully load the driver, leaving me with the following in the logs:
>> [ ? 30.149097] libertas_sdio mmc0:0001:1: (unregistered net_device):
>> command 0x00a9 timed out
>> [ ? 30.153759] libertas_sdio mmc0:0001:1: (unregistered net_device):
>> Timeout submitting command 0x00a9
>> [ ? 30.158843] libertas_sdio mmc0:0001:1: (unregistered net_device):
>> PREP_CMD: command 0x00a9 failed: -110
>> [ ? 30.164126] libertas_sdio mmc0:0001:1: (unregistered net_device):
>> CMD_FUNC_INIT cmd failed
>> This wifi chip is based around the Marvell 8688 core.
>>
>> I have also tried using an 8686 device, and in that case it is unable to
>> even complete loading the firmware, failing with the following:
>> [ ? 14.753132] libertas_sdio: Firmware req_size: 17
>> [ ? 14.755713] libertas_sdio: failed to load firmware: -5
>> [ ? 14.759272] libertas_sdio: probe of mmc0:0001:1 failed with error -5
>> Note: I added the 'req_size: ' debugging message in
>
> I assume this error happens after the driver uploaded the helper
> firmware and switched to multi-block transfers?
>
> Which kernel version are you working on? I'm asking because I fixed a
> similar bug some months ago which I happend to see an a MX31 CPU with
> a 8686 attach to the SDIO bus. The MX3 MMC controller has bug severe
> bug in its CRC calculation code which causes multi-block transfers on
> a 4-bit bus to fail, and hence the only solution was to switch to a
> 1-bit bus. But I don't known whether this also affects MX25 cores.

The MX25 has a different SD controller (eSDHC) than the one found on
MX31 and such issue is not present.

Regards,

Fabio Estevam

Freescale i.mx25 SDIO/Libertas issue

[Daniel Mack]

On Tue, May 31, 2011 at 4:03 AM, Fabio Estevam <festevam@gmail.com> wrote:
> Hi Daniel,
>
> On Mon, May 30, 2011 at 6:50 AM, Daniel Mack <zonque@gmail.com> wrote:
>> On Mon, May 30, 2011 at 3:52 AM, Andre Renaud <andre@bluewatersys.com> wrote:
>>> Hello,
>>> I am trying to use a Wi2Wi 802.11b/g (W2CBW009S) module attached to an
>>> i.MX25 cpu, specifically the i.MX25 PDK from freescale, although I've
>>> also tried it on a DeviceSolutions Topaz i.MX25. However it is unable to
>>> fully load the driver, leaving me with the following in the logs:
>>> [ ? 30.149097] libertas_sdio mmc0:0001:1: (unregistered net_device):
>>> command 0x00a9 timed out
>>> [ ? 30.153759] libertas_sdio mmc0:0001:1: (unregistered net_device):
>>> Timeout submitting command 0x00a9
>>> [ ? 30.158843] libertas_sdio mmc0:0001:1: (unregistered net_device):
>>> PREP_CMD: command 0x00a9 failed: -110
>>> [ ? 30.164126] libertas_sdio mmc0:0001:1: (unregistered net_device):
>>> CMD_FUNC_INIT cmd failed
>>> This wifi chip is based around the Marvell 8688 core.
>>>
>>> I have also tried using an 8686 device, and in that case it is unable to
>>> even complete loading the firmware, failing with the following:
>>> [ ? 14.753132] libertas_sdio: Firmware req_size: 17
>>> [ ? 14.755713] libertas_sdio: failed to load firmware: -5
>>> [ ? 14.759272] libertas_sdio: probe of mmc0:0001:1 failed with error -5
>>> Note: I added the 'req_size: ' debugging message in
>>
>> I assume this error happens after the driver uploaded the helper
>> firmware and switched to multi-block transfers?
>>
>> Which kernel version are you working on? I'm asking because I fixed a
>> similar bug some months ago which I happend to see an a MX31 CPU with
>> a 8686 attach to the SDIO bus. The MX3 MMC controller has bug severe
>> bug in its CRC calculation code which causes multi-block transfers on
>> a 4-bit bus to fail, and hence the only solution was to switch to a
>> 1-bit bus. But I don't known whether this also affects MX25 cores.
>
> The MX25 has a different SD controller (eSDHC) than the one found on
> MX31 and such issue is not present.

Ah ok. Thanks for the clarification.

Daniel

Freescale i.mx25 SDIO/Libertas issue

[Daniel Mack]

Hi Andre,

please never reply to people personally when you started a discussion
in the public. Always use the "reply to all" function, so others can
chime in.

On Mon, May 30, 2011 at 11:50 PM, Andre Renaud <andre@bluewatersys.com> wrote:
>> I assume this error happens after the driver uploaded the helper
>> firmware and switched to multi-block transfers?
>>
>> Which kernel version are you working on? I'm asking because I fixed a
>> similar bug some months ago which I happend to see an a MX31 CPU with
>> a 8686 attach to the SDIO bus. The MX3 MMC controller has bug severe
>> bug in its CRC calculation code which causes multi-block transfers on
>> a 4-bit bus to fail, and hence the only solution was to switch to a
>> 1-bit bus. But I don't known whether this also affects MX25 cores.
>>
>> Anyway - this workaround was merged more than a year ago. See if you
>> have commit 1eb46d ("libertas/sdio: 8686: set ECSI bit for 1-bit
>> transfers") in your tree.
>
> Hi Daniel,
> Can you tell me how you force the MX3 into 1-bit mode? I definitely have
> the patch you're referring to - I'm using the head of the mainline git
> tree, and I've verified it is there.

Ok, as Fabian pointed out, the SDHC controller on MX25 SoCs is
completely different, so what I told you can't be the reason, and as
I've never worked with these sort of devices, I can't help much. All I
can recommend is that you trace the driver code with printk()s to see
where it's bailing out.


Daniel

Freescale i.mx25 SDIO/Libertas issue

[Alan Carvalho de Assis]

Hi Andre,

On 5/29/11, Andre Renaud <andre@bluewatersys.com> wrote:
> Hello,
> I am trying to use a Wi2Wi 802.11b/g (W2CBW009S) module attached to an
> i.MX25 cpu, specifically the i.MX25 PDK from freescale, although I've
> also tried it on a DeviceSolutions Topaz i.MX25. However it is unable to
> fully load the driver, leaving me with the following in the logs:
> [   30.149097] libertas_sdio mmc0:0001:1: (unregistered net_device):
> command 0x00a9 timed out
> [   30.153759] libertas_sdio mmc0:0001:1: (unregistered net_device):
> Timeout submitting command 0x00a9
> [   30.158843] libertas_sdio mmc0:0001:1: (unregistered net_device):
> PREP_CMD: command 0x00a9 failed: -110
> [   30.164126] libertas_sdio mmc0:0001:1: (unregistered net_device):
> CMD_FUNC_INIT cmd failed
> This wifi chip is based around the Marvell 8688 core.
>
> I have also tried using an 8686 device, and in that case it is unable to
> even complete loading the firmware, failing with the following:
> [   14.753132] libertas_sdio: Firmware req_size: 17
> [   14.755713] libertas_sdio: failed to load firmware: -5
> [   14.759272] libertas_sdio: probe of mmc0:0001:1 failed with error -5
> Note: I added the 'req_size: ' debugging message in
>
> Has anyone successfully used the i.MX25 SDIO controller with anything
> other than straight MMC cards (which seem to work fine in the setup that
> I have)?
>

I used this Marvel WiFi 8686 in our previous product powered by i.MX51
and it worked fine. You need to load the firmware before using it.
Just put your binaries inside firmware directory on linux kernel and
setup your kernel config:

 CONFIG_FW_LOADER=y
 CONFIG_FIRMWARE_IN_KERNEL=y
-CONFIG_EXTRA_FIRMWARE=""
+CONFIG_EXTRA_FIRMWARE="sd8686_helper.bin sd8686.bin"
+CONFIG_EXTRA_FIRMWARE_DIR="firmware"

Best Regards,

Alan

Freescale i.mx25 SDIO/Libertas issue

[albert]

> I used this Marvel WiFi 8686 in our previous product powered by i.MX51
> and it worked fine. You need to load the firmware before using it.
> Just put your binaries inside firmware directory on linux kernel and
> setup your kernel config:
> 
>  CONFIG_FW_LOADER=y
>  CONFIG_FIRMWARE_IN_KERNEL=y
> -CONFIG_EXTRA_FIRMWARE=""
> +CONFIG_EXTRA_FIRMWARE="sd8686_helper.bin sd8686.bin"
> +CONFIG_EXTRA_FIRMWARE_DIR="firmware"
> 
> Best Regards,
> 
> Alan
> 

Hi Alan, just a quick question. I am fairly new to all this linux embedded world.
I just wandered what this code you wrote actually does. I searched around and I 
understand that it plugs some extra firmware into the kernel at compiling time, 
however I don't really understand what "firmware" really means in this case. 

I mean, does it mean the driver itself? because I though all you had to do to 
include a driver into the kernel was put the source codes in the "/drivers" 
directory in the kernel's directory and modify a bit the makefile so that it is 
compiled.. is this not right?

Thanks for your time ;)

Freescale i.mx25 SDIO/Libertas issue

[Andre Renaud]

On 30/05/11 13:52, Andre Renaud wrote:
> Hello,
> I am trying to use a Wi2Wi 802.11b/g (W2CBW009S) module attached to an
> i.MX25 cpu, specifically the i.MX25 PDK from freescale, although I've
> also tried it on a DeviceSolutions Topaz i.MX25. However it is unable to
> fully load the driver, leaving me with the following in the logs:
> [   30.149097] libertas_sdio mmc0:0001:1: (unregistered net_device):
> command 0x00a9 timed out
> [   30.153759] libertas_sdio mmc0:0001:1: (unregistered net_device):
> Timeout submitting command 0x00a9
> [   30.158843] libertas_sdio mmc0:0001:1: (unregistered net_device):
> PREP_CMD: command 0x00a9 failed: -110
> [   30.164126] libertas_sdio mmc0:0001:1: (unregistered net_device):
> CMD_FUNC_INIT cmd failed
> This wifi chip is based around the Marvell 8688 core.
> 
> I have also tried using an 8686 device, and in that case it is unable to
> even complete loading the firmware, failing with the following:
> [   14.753132] libertas_sdio: Firmware req_size: 17
> [   14.755713] libertas_sdio: failed to load firmware: -5
> [   14.759272] libertas_sdio: probe of mmc0:0001:1 failed with error -5
> Note: I added the 'req_size: ' debugging message in
> 
> Has anyone successfully used the i.MX25 SDIO controller with anything
> other than straight MMC cards (which seem to work fine in the setup that
> I have)?

If I enable the libertas debugging details, I get some more information:

libertas sdio: waiting for firmware to boot...
mmc0: starting CMD52 arg 10008000 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008200 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008000 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008200 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008000 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008200 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008000 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 000010dc 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008200 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 000010fe 00000000 00000000 00000000
libertas sdio: Firmware loaded
mmc0: starting CMD52 arg 80022000 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001000 00000000 00000000 00000000
mmc0: starting CMD52 arg 80022201 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001001 00000000 00000000 00000000
mmc0: starting CMD52 arg 10008600 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001005 00000000 00000000 00000000
mmc0: starting CMD52 arg 9000080f flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 0000100f 00000000 00000000 00000000
libertas sdio: send function INIT command
libertas cmd: DNLD_CMD: command 0x00a9, seq 1, size 8
mmc0: starting CMD52 arg 10004000 flags 00000195
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
mmc0: req done (CMD52): 0: 00001009 00000000 00000000 00000000
mmc0: starting CMD53 arg 9200000c flags 000001b5
mmc0:     blksz 12 blocks 1 flags 00000100 tsac 1000 ms nsac 0
sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x0000000b
mmc0: req done (CMD53): 0: 00002000 00000000 00000000 00000000
mmc0:     12 bytes transferred: 0
libertas_sdio mmc0:0001:1: (unregistered net_device): command 0x00a9
timed out
libertas_sdio mmc0:0001:1: (unregistered net_device): Timeout submitting
command 0x00a9
libertas_sdio mmc0:0001:1: (unregistered net_device): PREP_CMD: command
0x00a9 failed: -110
libertas_sdio mmc0:0001:1: (unregistered net_device): CMD_FUNC_INIT cmd
failed

This seems to imply that the unit is correctly loading the firmware, and
then when it determines that the firmware has loaded, and tries to issue
the CMD_FUNC_INIT command, this times out.

Can anyone explain how I can begin debugging this, or confirm if they've
had this operate on the sdhci-esdhc-imx controller present in the i.MX25?

Regards,
Andre

[Solved] Re: Freescale i.mx25 SDIO/Libertas issue

[Andre Renaud]

Hello Zamek,

> 05/31/2011 04:14 AM keltez?ssel, Andre Renaud ?rta:
>> If I enable the libertas debugging details, I get some more information:
>>
>> This seems to imply that the unit is correctly loading the firmware, and
>> then when it determines that the firmware has loaded, and tries to issue
>> the CMD_FUNC_INIT command, this times out.
>>
>> Can anyone explain how I can begin debugging this, or confirm if they've
>> had this operate on the sdhci-esdhc-imx controller present in the i.MX25?
>>
> I got same errors with 2.6.31 kernel. As I suggested earlier use 2.6.35
> from Freescale.
> 
> git clone http://opensource.freescale.com/pub/scm/imx/linux-2.6-imx.git
> cd linux-2.6-imx
> git checkout rel_imx_2.6.35_11.04.01
> copy .config from your 2.6.31
> make ARCH=arm oldconfig
> make ARCH=arm menuconfig
> 
> It works for me well.
> Is your wifi card hard wired or plugined?
> 

Thanks for that information - using that kernel branch I have had it all
working properly, on both an 8686 and 8688 Marvell SDIO device. These
are both external (plugged in).

I was hoping to do a git bisect to determine where the fault lay,
however it seems that the imx tree uses a completely different SDIO
driver. I have validated the Libertas driver on a different CPU (atmel)
from the same kernel, so I'm assuming at this stage that the fault lies
in the SDIO driver in the current Linux mainline.

Regards,
Andre

-- 
Bluewater Systems - An Aiotec Company

Andre Renaud        		
andre at bluewatersys.com          5 Amuri Park, 404 Barbadoes St
www.bluewatersys.com            PO Box 13 889, Christchurch 8013
www.aiotec.co.nz                New Zealand
Phone: +64 3 3779127            Freecall: Australia 1800 148 751
Fax:   +64 3 3779135            USA 1800 261 2934

Freescale i.mx25 SDIO/Libertas issue

[Albert]

Hi people, my company is also considering developing a platform for 
the MX25 including a wifi module based on marvell's 8686 chip using 
the SDIO interface. I am not very experienced in the topic and right now
 we are only trying to establish some especifications and making a budget.
I just wanted to know wether it is hard to get all this going.

I have read all this thread but i don't really get what the real problem is, 
specially when somebody talks about some firmware and kernel configuration....

I just expected to connect the module to the SDIO bus loading the driver 
the and configuring some stuff (wifi-network, access key etc.) what am I missing?
I just wanna know if a rocky like me will be able to pull through with all this.

Thanks a lot :P