Can't register rteth0 for FEC Ethernet card on SabreLite iMX6Q

sonnguyen — Fri, 17 Oct 2014 06:56:32 GMT

Hi All,

I'm a new user on RTnet and try to make Rtnet work on Freescale Sabre Lite iMX6Q board. But I got an issue, RTnet can't use rt_fec.ko module driver to register rt_eth0 even though non real time driver is disable.

I'm using:

Linux kernel 3.0.43 download from Xenomai git: http://git.xenomai.org/ipipe-gch.git/?h=ipipe-3.0-imx6q

Xenomai 2.6 download from http://git.xenomai.org/xenomai-2.6.git/

RTnet 0.9.13 download from http://rtnet.org/download.html

Please see my kernel configuration and boot log in attached file.

Xenomai is loaded:

"I-pipe: Domain Xenomai registered.

Xenomai: hal/arm started.

Xenomai: scheduling class idle registered.

Xenomai: scheduling class rt registered.

Xenomai: real-time nucleus v2.6.3 (Lies and Truths) loaded.

Xenomai: debug mode enabled.

Xenomai: starting native API services.

Xenomai: starting POSIX services.

Xenomai: starting RTDM services. "

And FEC ethernet driver (non real-time driver) is loaded when kernel is booting

"FEC Ethernet Driver

fec_enet_mii_bus: probed "

Xenomai is built following install guideline for ARM platform from Xenomai:

http://xenomai.org/installing-xenomai-2-x/

RTnet is built by below command, because SABRE Lite use FEC ethernet card with Micrel KSZ9021 Gigabit chip so I put "--enable-fec" in configure command to build real-time driver for FEC ethernet card:

"./configure --host=armv7l-timesys-linux-gnueabi --with-rtext-config=/home/sonnguyen/rtnet-xenomai-rootfs/usr/xenomai/bin/xeno-config --with-linux=/home/sonnguyen/build/rtnet-xenomai-ipipe-imx6q --enable-rtcfg-dbg --enable-rtwlan --enable-net-routing --enable-router --enable-nomac --enable-rtcap --enable-proxy --enable-checks --enable-fec "

Then

"make DESTDIR=/home/sonnguyen/rtnet-xenomai-rootfs install"

I also changed RT_DRIVER from default value to "rt_fec" in rtnet.conf.

After kernel is booted, I ran "./rtnet start" and got this:

"RTnet: initialising real-time networking

RT FEC Ethernet Driver

./rtnet: line 385: can't create /sys/bus/pci/drivers/rt_fec/bind: nonexistent directory

initializing loopback...

RTnet: registered rtlo

RTcap: real-time capturing interface

ifconfig: SIOCGIFFLAGS: No such device

ifconfig: SIOCGIFFLAGS: No such device

RTcfg: init real-time configuration distribution protocol

RTmac: init realtime media access control

RTmac/TDMA: init time division multiple access control mechanism

ioctl: No such device

ioctl: No such device

ioctl (add): No such device

ioctl (add): No such device

ifconfig: SIOCGIFFLAGS: No such device

Waiting for all slaves...ioctl: No such device

ioctl: No such device "

Then I tried:

"# lspci

lspci: /sys/bus/pci/devices: No such file or directory

# ls /sys/bus/

ac97 hid mdio_bus platform sdio spi

event_source i2c mmc scsi serio usb "

No pci directory under /sys/bus/. Then I thought because the script can't find the ethernet physical bus, it can't register rteth0.

Then I looked into rtnet script and did some minor change. In the script it requires physical ethernet device ID (mentioned in REBIND_RT_NICS), so I tried to find out what it is and got this when make eth0 up with non real-time driver:

"eth0: Freescale FEC PHY driver [Micrel KSZ9021 Gigabit PHY] (mii_bus:phy_addr=1:06, irq=-1)

PHY: 1:06 - Link is Up - 1000/Full "

I think 1:06 is my physical bus ID, then I change the code in rtnet from:

for dev in $REBIND_RT_NICS; do

if [ -d /sys/bus/pci/devices/$dev/driver ]; then

echo $dev > /sys/bus/pci/devices/$dev/driver/unbind

echo $dev > /sys/bus/pci/drivers/$RT_DRIVER/bind

done

echo 1:06 > /sys/bus/mdio_bus/drivers/Micrel\ KSZ9021\ Gigabit\ PHY/unbind

echo 1:06 > /sys/bus/platform/drivers/rt_fec/bind

And I tried again with "./rtnet start", this time I got this:

RTnet: initialising real-time networking

RT FEC Ethernet Driver

sh: write error: No such device

initializing loopback...

RTnet: registered rtlo

RTcap: real-time capturing interface

ifconfig: SIOCGIFFLAGS: No such device

RTcfg: init real-time configuration distribution protocol

RTmac: init realtime media access control

RTmac/TDMA: init time division multiple access control mechanism

ioctl: No such device

ioctl (add): No such device

ifconfig: SIOCGIFFLAGS: No such device

Waiting for all slaves...ioctl: No such device

ioctl: No such device

But it still said "No such device"

This is lsmod after I ran ./rtnet start

# lsmod

Module Size Used by Not tainted

tdma 25691 0

rtmac 9724 1 tdma

rtcfg 58071 0

rtcap 7151 0

rt_loopback 1279 2

rtpacket 6365 0

rtudp 10738 0

rt_fec 12742 0

rtipv4 29987 2 rtcfg,rtudp

rtnet 40746 9 tdma,rtmac,rtcfg,rtcap,rt_loopback,rtpacket,rtudp,rt_fec,rtipv4

# ./rtifconfig

rtlo Medium: Local Loopback

IP address: 127.0.0.1

UP LOOPBACK RUNNING MTU: 1500

Only rtlo is registered.

I also tried with kernel linux without non real-time FEC driver (please refer in another config file attached in this email), but still the same issue happened.

Do you have any idea how to solve this issue? I did many search but still can not figure out how to fix it.

Best Regards,

Nguyen Hung Son

Original Attachment has been moved to: kernel_config.zip

Original Attachment has been moved to: kernel_config_without_FEC.zip

Original Attachment has been moved to: rtnet_config.status.zip

Original Attachment has been moved to: rtnet.conf.zip

Re: Can't register rteth0 for FEC Ethernet card on SabreLite iMX6Q

sonnguyen — Mon, 20 Oct 2014 12:04:38 GMT

Hi everyone,

Does anyone have an ideal to solve this issue or to know where the issue come from?

Thanks,

Nguyen Hung Son.

topic Can't register rteth0 for FEC Ethernet card on SabreLite iMX6Q in i.MX Processors

Can't register rteth0 for FEC Ethernet card on SabreLite iMX6Q

Re: Can't register rteth0 for FEC Ethernet card on SabreLite iMX6Q