[Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Manuel Vonthron]

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Dear all,

I am using the driver "xeno_16550A" for serial communication between a
powersupply and its controlling PC (x86). I started working with Xenomai
2.5.5, but I recently switched to another machine where I installed Xenomai
2.6.

On this new machine, I get the "Inappropriate ioctl for device" error while
setting up my serial connection:
  err = rt_dev_ioctl(fd, RTSER_RTIOC_SET_CONFIG, &serial_config);
  >> error -25: Inappropriate ioctl for device
The following reads/writes don't fail but without proper configuration,
messages aren't understood by the device.

My tests with non-RT code and the regular Linux driver keeps working with
this new machine and again, the RT code is the very same, I only updated my
Makefile to match the new version.

- setserial infos:
  /dev/ttyS0 uart 16550A port 0x03f8 irq 4 baud_base 115200 spd_normal
skip_test
- xeno_16550A loaded with:
  `modprobe -v xeno_16550A io=0x03f8 irq=4 baud_base=115200`
- result of "rtdm" unit test:
  SetupExclusive openSuccessive openDefer close by driver handlerDefer
close by pending referenceNormal closeDeferred module unload#

Do you have any idea where the error comes from and how would I fix it?


Thanks,
Manuel



-- 
Manuel Vonthron
Laboratoire de Nanorobotique
École Polytechnique de Montréal
Montréal, QC
http://nano.polymtl.ca/

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Re: [Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Gilles Chanteperdrix]

On 01/18/2012 10:09 PM, Manuel Vonthron wrote:
> Dear all,
> 
> I am using the driver "xeno_16550A" for serial communication between a
> powersupply and its controlling PC (x86). I started working with Xenomai
> 2.5.5, but I recently switched to another machine where I installed Xenomai
> 2.6.
> 
> On this new machine, I get the "Inappropriate ioctl for device" error while
> setting up my serial connection:
>   err = rt_dev_ioctl(fd, RTSER_RTIOC_SET_CONFIG, &serial_config);
>   >> error -25: Inappropriate ioctl for device
> The following reads/writes don't fail but without proper configuration,
> messages aren't understood by the device.
> 
> My tests with non-RT code and the regular Linux driver keeps working with
> this new machine and again, the RT code is the very same, I only updated my
> Makefile to match the new version.
> 
> - setserial infos:
>   /dev/ttyS0 uart 16550A port 0x03f8 irq 4 baud_base 115200 spd_normal
> skip_test
> - xeno_16550A loaded with:
>   `modprobe -v xeno_16550A io=0x03f8 irq=4 baud_base=115200`
> - result of "rtdm" unit test:
>   SetupExclusive openSuccessive openDefer close by driver handlerDefer
> close by pending referenceNormal closeDeferred module unload#
> 
> Do you have any idea where the error comes from and how would I fix it?

It could be due to the version of gc. Try passing
CFLAGS="-fno-omit-frame-pointer"
on configure commande line.

-- 
                                                                Gilles.

Re: [Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Manuel Vonthron]

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"-fno-omit-frame-pointer" doesn't fix the problem but gcc versions are
indeed different:
  - gcc 4.3.2 on the "working" machine
  - gcc 4.6.2 on the other

Thanks for your help


On Wed, Jan 18, 2012 at 4:35 PM, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> On 01/18/2012 10:09 PM, Manuel Vonthron wrote:
> > Dear all,
> >
> > I am using the driver "xeno_16550A" for serial communication between a
> > powersupply and its controlling PC (x86). I started working with Xenomai
> > 2.5.5, but I recently switched to another machine where I installed
> Xenomai
> > 2.6.
> >
> > On this new machine, I get the "Inappropriate ioctl for device" error
> while
> > setting up my serial connection:
> >   err = rt_dev_ioctl(fd, RTSER_RTIOC_SET_CONFIG, &serial_config);
> >   >> error -25: Inappropriate ioctl for device
> > The following reads/writes don't fail but without proper configuration,
> > messages aren't understood by the device.
> >
> > My tests with non-RT code and the regular Linux driver keeps working with
> > this new machine and again, the RT code is the very same, I only updated
> my
> > Makefile to match the new version.
> >
> > - setserial infos:
> >   /dev/ttyS0 uart 16550A port 0x03f8 irq 4 baud_base 115200 spd_normal
> > skip_test
> > - xeno_16550A loaded with:
> >   `modprobe -v xeno_16550A io=0x03f8 irq=4 baud_base=115200`
> > - result of "rtdm" unit test:
> >   SetupExclusive openSuccessive openDefer close by driver handlerDefer
> > close by pending referenceNormal closeDeferred module unload#
> >
> > Do you have any idea where the error comes from and how would I fix it?
>
> It could be due to the version of gc. Try passing
> CFLAGS="-fno-omit-frame-pointer"
> on configure commande line.
>
> --
>                                                                Gilles.
>



-- 
Manuel Vonthron
Laboratoire de Nanorobotique
École Polytechnique de Montréal
Montréal, QC
http://nano.polymtl.ca/

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Re: [Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Gilles Chanteperdrix]

On 01/18/2012 10:56 PM, Manuel Vonthron wrote:
> "-fno-omit-frame-pointer" doesn't fix the problem but gcc versions are
> indeed different:
>   - gcc 4.3.2 on the "working" machine
>   - gcc 4.6.2 on the other

gcc 4.6.2 definitely needs -fno-omit-frame-pointer. Stupid suggestion:
if you re-used the same build directory for xenomai user-space, did you
think about running "make clean" after reconfiguring?


-- 
                                                                Gilles.

Re: [Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Manuel Vonthron]

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On Thu, Jan 19, 2012 at 3:39 PM, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> gcc 4.6.2 definitely needs -fno-omit-frame-pointer. Stupid suggestion:
> if you re-used the same build directory for xenomai user-space, did you
> think about running "make clean" after reconfiguring?
>

I wasn't using the same build directory. And as far as my own program is
concerned, I "make clean" before each compilation.
However I just saw one difference on the kernel configuration,
RT/drivers/Serial
  - on the working (2.5) machine, access mode is set to "any"
  - on the other one (2.6), access mode is set to "port-based" only

Can this setting be the cause of my problem ?

Thanks



-- 
Manuel Vonthron
Laboratoire de Nanorobotique
École Polytechnique de Montréal
Montréal, QC
http://nano.polymtl.ca/

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Re: [Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Gilles Chanteperdrix]

On 01/23/2012 08:53 PM, Manuel Vonthron wrote:
> On Thu, Jan 19, 2012 at 3:39 PM, Gilles Chanteperdrix <
> gilles.chanteperdrix@xenomai.org> wrote:
> 
>> gcc 4.6.2 definitely needs -fno-omit-frame-pointer. Stupid suggestion:
>> if you re-used the same build directory for xenomai user-space, did you
>> think about running "make clean" after reconfiguring?
>>
> 
> I wasn't using the same build directory. And as far as my own program is
> concerned, I "make clean" before each compilation.
> However I just saw one difference on the kernel configuration,
> RT/drivers/Serial
>   - on the working (2.5) machine, access mode is set to "any"
>   - on the other one (2.6), access mode is set to "port-based" only
> 
> Can this setting be the cause of my problem ?

I guess you would get some error message if the driver was not working,
did you check the kernel logs?

> 
> Thanks
> 
> 
> 


-- 
                                                                Gilles.

Re: [Xenomai-help] "Inappropriate ioctl for device" with xeno_16550A on Xenomai 2.6, not Xenomai 2.5

[Manuel Vonthron]

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> I guess you would get some error message if the driver was not working,
> did you check the kernel logs?
>

There isn't  even a warning. Here is what I get when running my app (from
syslog):
  Jan 23 15:14:38 mrsub kernel: [445923.280301] Xenomai: RTDM: closing file
descriptor 0.
  Jan 23 15:14:38 mrsub kernel: [445923.301782] Xenomai: native: cleaning
up heap "" (ret=0).
  Jan 23 15:14:38 mrsub kernel: [445923.323247] Xenomai: native: cleaning
up mutex "ctrl-mutex" (ret=0).

(on a separate note, in this log, the RT heap name isn't found while it
actually exists in /proc/xenomai/heap)

I have no message when "modprobing" the driver.




> >
> > Thanks
> >
> >
> >
>
>
> --
>                                                                Gilles.
>



-- 
Manuel Vonthron
Laboratoire de Nanorobotique
École Polytechnique de Montréal
Montréal, QC
http://nano.polymtl.ca/

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