Re: [Xenomai] TR: RTNet - how to setup rt_fec on IMX6Q (Xenomai 3.0.7)

["Stéphane Reichert" <sreichert@sepro-group.com>]

Hello Edouard,

Thanks again for your patch.

I tried it on my kernel, but unfortunately I am facing the same issue
(ioctl: Resource temporarily unavailable error message on rtping).

Best regards
Stéphane

-----Message d'origine-----
De : Edouard Tisserant [mailto:edouard.tisserant@gmail.com]
Envoyé : mardi 21 août 2018 23:19
À : Stéphane Reichert; xenomai@xenomai.org
Objet : Re: [Xenomai] TR: RTNet - how to setup rt_fec on IMX6Q (Xenomai 
3.0.7)

Hello Stéphane.

I'm porting EtherLAB to Xenomai3 on Imx6, using RTNet instead of EtherLAB 
provided drivers.

This is still work in progress, but the fec.c patch I have now may help.
Find it attached.

I built it last time on kernel 4.9.51 and xenomai 3.0.6. This is largely 
untested, your feedback is welcome.

Beware content of DTS for vanilla FEC from kernel 4.x may not be compatible 
anymore with the one expected by FEC from RTnet. You may have to patch you 
DTS accordingly.

Best regards,

Edouard



On 17/08/2018 13:39, Stéphane Reichert wrote:
> Hello Philippe,
>
> I have noticed in the file fec.c that the function fec_enet_ioctl did
> not match the prototype of do_ioctl (it looks like "request" and "arg"
> parameters are switched). Is it a mistake ?
>
> (I tried to switch these parameters but it didn't solved my problem as
> well).
>
> Stephane
>
>
> -----Message d'origine-----
> De : Philippe Gerum [mailto:rpm@xenomai.org] Envoyé : vendredi 17 août
> 2018
> 10:28 À : Stéphane Reichert; xenomai@xenomai.org Objet : Re: [Xenomai]
> RTNet - how to setup rt_fec on IMX6Q (Xenomai 3.0.7)
>
> On 08/16/2018 03:23 PM, Stéphane Reichert wrote:
>> Hello,
>>
>>
>>
>> We are trying to use the rt_fec driver for RTNet on a iMX6Q board.
>>
>>
>>
>> I have patched the KConfig to add this driver on buildroot and it
>> compiles perfectly.
>>
>>
>>
>> But now, I am not able to use it on our board (it works when I “rtping”
>> the loopback,
>>
>> but it doesn’t work if I try to ping an external board).
> The fec driver does not seem to tell the stack about the carrier
> enable state. If so, you may want to try the following patch:
>
> diff --git a/kernel/drivers/net/drivers/fec.c
> b/kernel/drivers/net/drivers/fec.c
> index 36870ba16..d94ec690f 100644
> --- a/kernel/drivers/net/drivers/fec.c
> +++ b/kernel/drivers/net/drivers/fec.c
> @@ -1323,6 +1323,7 @@ fec_enet_open(struct rtnet_device *ndev)
>  		return ret;
>  	}
>  	phy_start(fep->phy_dev);
> +	rtnetif_carrier_on(ndev);
>  	rtnetif_start_queue(ndev);
>  	fep->opened = 1;
>  	return 0;
>
> --
> Philippe.
>
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