Re: Kvazer USB CAN driver

From: Olivier Sobrie <olivier@sobrie.be>
To: "GARNERO, PIERRE (P.)" <pgarnero@visteon.com>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>,
	"linux-can@vger.kernel.org" <linux-can@vger.kernel.org>,
	Daniel Berglund <db@kvaser.com>
Subject: Re: Kvazer USB CAN driver
Date: Thu, 16 Jan 2014 12:02:04 +0100	[thread overview]
Message-ID: <20140116110204.GA5286@hposo> (raw)
In-Reply-To: <64b7875c88bc4d9c914241f2fac0d448@AMSPR06MB053.eurprd06.prod.outlook.com>

Hello Pierre,

Sorry I didn't see your previous mails...

On Mon, Jan 13, 2014 at 09:31:55AM +0000, GARNERO, PIERRE (P.) wrote:
> Hello Olivier,
> 
> I think I understand why this is not working.
> 
> I have looked at the Kvaser drivers on USB and, basically, there are 2 big families:
> •	Leaf
> •	USBII
> 
> As far as I understand the current netdriver implements the Leaf family only.

Indeed.

> 
> I could see that all USB “product ids” are well identical than the one defined in Kvaser leaf driver. However usbII devices with product ids 2,3,4,5 are not present.
> Effectivelly, le product id tied to my kvaser usbcan Rugged device is "2".

If so, I wonder how you get the kernel panic you mentionned in a previous
mail? I would be interrested in seeing where it crashes.

> 
> I have tried to look at the differences (from kvaser driver sources) and there a lot of discrepencies between the leaf usb commands and the usbcan2 (helios?)  usb commands. So, supporting this device should not be an easy task....

Indeed the commands sent to hardware looks to be different.
I'll have a look once I found some time...

Kr,

Olivier

> 
> 
> Cheers,
> 
> Pierre
> 
> -----Message d'origine-----
> De : Oliver Hartkopp [mailto:socketcan@hartkopp.net] 
> Envoyé : mercredi 8 janvier 2014 22:29
> À : GARNERO, PIERRE (P.)
> Cc : linux-can@vger.kernel.org; Olivier Sobrie; Daniel Berglund
> Objet : Re: Kvazer USB CAN driver
> 
> Hello Pierre,
> 
> what exact kernel version are you using there?
> 
> Do you use the Mainline driver that comes with Linux or did you use the Kvaser driver from http://www.kvaser.com/en/downloads.html ??
> 
> Can you provide a crash dump?
> 
> I also added the Kvaser authors in CC
> 
> Regards,
> Oliver
> 
> On 07.01.2014 17:46, GARNERO, PIERRE (P.) wrote:
> > Hello,
> > 
> > Thanks for all this information. And, basically the issue is the fact that no can network interface shows up.
> > 
> > If I boot with the Kvaser device plugged, I could well see it using:
> >  Lsusb
> > 
> > ...but
> >  sudo ip link list
> > ...does not reveal any can interface while I have loaded these modules: can, can-raw, can-dev, kvaser-usb.
> > ...while dmesg displays "usbcore: registered new interface driver kvaser_usb"...
> > 
> > In addition, if I hotplug Kvaser device, I get a kernel panic.
> > 
> > So, I have probably made a mistake when I have built the kernel.
> > 
> > Cheers,
> > 
> > Pierre
> > 
> >  
> > -----Message d'origine-----
> > De : socketcan-users-bounces@lists.berlios.de [mailto:socketcan-users-bounces@lists.berlios.de] De la part de Max S.
> > Envoyé : mardi 7 janvier 2014 16:17
> > À : socketcan-users@lists.berlios.de
> > Objet : Re: [Socketcan-users] Beginner question - Kvazer USB CAN 
> > driver
> > 
> > Hello,
> > 
> > I'm not sure about the kvaser in particular, but the driver should create the network interfaces when the USB device is attached.
> > 
> > so no need to add a new socketcan device.
> > 
> > Check to make sure you have kvaser connected:
> > 	lsusb
> > 
> > Check to make sure kvaser driver has made network interfaces:
> > 	sudo ip link list
> > 
> > Then bring the interface up:
> > 	sudo ip link set can0 up type can bitrate 250000
> > 
> > Listen to some frames:
> > 	candump can0
> > 
> > Depending on how you have permissions set up you will require sudo to use most of the ip commands.
> > 
> > Regards,
> > Max Schneider
> > 
> > On Tue, 2014-01-07 at 14:17 +0000, GARNERO, PIERRE (P.) wrote:
> >> Hello.
> >>
> >>  
> >>
> >> I would like to use a KVAZER USBcan Rugged device with the socketcan 
> >> library.
> >>
> >> I use Raspbian OS and I have built a kernel with anything enabled 
> >> regarding CAN.
> >>
> >>  
> >>
> >> I have loaded the following modules:
> >>
> >> # modprobe can
> >>
> >> # modprobe vcan
> >>
> >> # modprobe can-raw
> >>
> >> # modprobe can-dev
> >>
> >> # modprobe kvazer-usb
> >>
> >>  
> >>
> >> But any ip link command (ex: ip link add dev can0 type can) failed 
> >> with “RTNETLINK answer : operation not permitted” (excepted for vcan 
> >> which works well).
> >>
> >>  
> >>
> >> Could someone provide me some hints regarding the steps to have a 
> >> Kvaser USBcan device up and running using the net driver ?
> >>
> >>  
> >>
> >> Many thanks in advance,
> >>
> >>  
> >>
> >> Pierre
> >>
> >>  
> >>
> >>  
> >>
> >>  
> >>
> >>  
> >>
> >>  
> >>
> >>
> >> _______________________________________________
> >> Socketcan-users mailing list
> >> Socketcan-users@lists.berlios.de
> >> https://lists.berlios.de/mailman/listinfo/socketcan-users
> > 
> > 
> > _______________________________________________
> > Socketcan-users mailing list
> > Socketcan-users@lists.berlios.de
> > https://lists.berlios.de/mailman/listinfo/socketcan-users
> > _______________________________________________
> > Socketcan-users mailing list
> > Socketcan-users@lists.berlios.de
> > https://lists.berlios.de/mailman/listinfo/socketcan-users
> > 

-- 
Olivier