From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <53A91727.9040208@xenomai.org> Date: Tue, 24 Jun 2014 08:13:59 +0200 From: Gilles Chanteperdrix MIME-Version: 1.0 References: <20140610094057.GJ9791@lukather> <5396D469.7060701@xenomai.org> <20140610095422.GK9791@lukather> <5396D780.4020704@xenomai.org> <20140611092532.GE4254@lukather> <53989CEF.3080205@xenomai.org> <20140612075401.GH4254@lukather> <539966B7.3080900@xenomai.org> <20140612150313.GA3448@lukather> <539B4A85.7030302@xenomai.org> <20140623140559.GE19730@lukather> <53A8BBD6.3020701@xenomai.org> In-Reply-To: <53A8BBD6.3020701@xenomai.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai] Xenomai on Atmel SAMA5D3 with a 3.14 kernel List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Maxime Ripard Cc: Michael Opdenacker , Thomas Petazzoni , Boris Brezillon , Alexandre Belloni , xenomai@xenomai.org, =?UTF-8?B?QW50b2luZSBUw6luYXJ0?= -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 06/24/2014 01:44 AM, Gilles Chanteperdrix wrote: > On 06/23/2014 04:05 PM, Maxime Ripard wrote: >> On Fri, Jun 13, 2014 at 09:01:25PM +0200, Gilles Chanteperdrix >> wrote: >>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >>> >>> On 06/12/2014 05:03 PM, Maxime Ripard wrote: >>>> On Thu, Jun 12, 2014 at 10:37:11AM +0200, Gilles >>>> Chanteperdrix wrote: >>>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >>>>> >>>>> On 06/12/2014 09:54 AM, Maxime Ripard wrote: >>>>>> On Wed, Jun 11, 2014 at 08:16:15PM +0200, Gilles >>>>>> Chanteperdrix wrote: >>>>>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >>>>>>> >>>>>>> On 06/11/2014 11:25 AM, Maxime Ripard wrote: >>>>>>>> On Tue, Jun 10, 2014 at 12:01:36PM +0200, Gilles >>>>>>>> Chanteperdrix wrote: >>>>>>>>> If you compile the kernel without I-pipe and >>>>>>>>> Xenomai support and enable the tcb_clksrc >>>>>>>>> clocksource driver does it work? >>>>>>>> >>>>>>>> Yep, with the exact same config, except for >>>>>>>> CONFIG_IPIPE and CONFIG_XENOMAI being disabled, it >>>>>>>> boots fine. >>>>>>>> >>>>>>> Read again, I am not insterested in exactly the same >>>>>>> config, I am interested in the a config with >>>>>>> tcb_clksrc clocksource, which is disabled by >>>>>>> CONFIG_IPIPE. Only if you enable this clocksource do >>>>>>> you get to use the atmel_tclib code. >>>>>> >>>>>> Let me rephrase then. It works with the exact same >>>>>> config, with CONFIG_IPIPE and CONFIG_XENOMAI disabled, >>>>>> and CONFIG_ATMEL_TCB_CLKSRC enabled. >>>>> >>>>> Then I would tend to think that the clocksource is not your >>>>> problem and repeat that you should check everything else >>>>> in the porting guide. >>>> >>>> Ok. I will. >>>> >>> Looking rapidly at the code, at least the irq controller and >>> pic muting need fixing. > >> Ok, so, a bit of news on this one. > >> After fixing the irq controller to work on the AIC5, and >> disabling the pic muting, I get almost 100% of the time a system >> freeze when running: >> http://git.free-electrons.com/training-materials/tree/lab-data/realtime/rttest/data/rttest.c > >> The TCB timer is still ticking, at a rate around 1Hz, while, >> when the system hangs, the PIT interrupt isn't firing anymore >> (which explains the freeze). So there's probably something wrong >> related to the ipipe I guess, or the interrupt being masked and >> not unmasked at some point. > > Well: - the existing at91 I test also use a PIT and they do not > hang - if you disabled the pic muting, noone is disabling the PIT > interrupt. > > So, I would suggest looking carefully at the sama5 code. You could also post this code for review, BTW. Unless I am mistaken about your company, you do not want to keep it secret anyway ;-) - -- Gilles. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Icedove - http://www.enigmail.net/ iD8DBQFTqRcnGpcgE6m/fboRAvB+AJ4rZEZV99GYI7PF/HIQbyLA/WsxCgCfXtRL j4qfz3wQSKh43WbqQqeYf00= =5WYK -----END PGP SIGNATURE-----