Re: [Xenomai-core] porting xenomai on imx25

[Roberto Bielli <roberto.bielli@domain.hid>]

Hi Gilles,

i found the problem that disable interrupts when execute a task.
My kernel for imx25 uses the properties CONFIG_MXC_IRQ_PRIOR in the .config.
This properties enable reentrant interrupts so it uses the NIMASK(normal 
interrupt mask register ) register to disable interrupts with
certain priority level. The interrupt of timer is disabled in that cases.
i tried to disable this option in the kernel but i have other big 
problems with the task and so i have to do other tests before saying the 
conclusions.

Do you know if xenomai doesn't work with reentrant interrupts ?





Il 18/04/2012 13:51, Gilles Chanteperdrix ha scritto:
> On 04/18/2012 12:28 PM, Roberto Bielli wrote:
>> Hi Gilles,
>>
>> i try to give only another accurate information.
>>
>> i made another test:
>> i write a xenomai driver for reading the timer and avic register and i
>> see a strange behaviour.
>> when there is the problem the interrupt is NOT masqueraded in avic but
>> the timer has the interrupt not acked.
> Ah, that is good news, at least now we have a clue. Note that it could
> also mean that the timer has ticked, but the irq is not generated for
> another reason. I think you should dump all the timer registers, and see
> if anything is wrong by decoding their values with the datasheet.
>
> A quick test also, assuming that the write to the MX3_TSTAT regiter in
> gpt_irq_acknowledge may be posted, try rereading the register after
> writing it.
>
>> After this i understand that now are my problems.
>> Do you know somebody that can help me understanding the problem only for
>> xenomai side?
> If you need someone's help, you need to give access to your board to
> that person or company. Because indirect debugging is really
> inefficient: look at how many mails I had to send you over how much time
> to get you to do what anybody with xenomai experience would have done in
> just a few hours.
>


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