asterisk users - Mar 2005 - wctdm and two tdm cards

Greetings,

I have a server I'm working on here with two tdm cards in it.
4 FXS and 4FX0. Both cards work fine on their own. The problem
lies with using both in the system at once. I have verified the
IRQ's are fine. I have tried switching the slots the cards reside in, no 
luck though. I am using ACPI but not APM. I am using gentoo latest, with 
vanilla 2.6(.10) kernel and udev. CVS as of CVS-HEAD-03/02/05-03:42:41.

The problem is as follows:

If I power up the system from system off, the cards both get detected

If I reboot the system with reset button, ctrl alt del, or 'reboot'
the TDM04P does not get detected.

If I then reboot, then hit the power button, and let it turn off, then
turn it back on again and boot, it detects both cards fine.

I have tried searchign the list archives, but I have not had much luck. 
  One person on IRC mentioned he's seen this before, but didn't have any
solutions.

Does anyone here know what might be the problem? or have a fix/work 
around? I know I shouldnt be rebooting servers, but I have to make sure 
it works upon reboot as it is going to be installed in a power-outtage 
happy part of the world :)

TIA,
Matts

> If I reboot the system with reset button, ctrl alt del, or 'reboot'
    > the TDM04P does not get detected.

To completely "reset" the TDM cards before they can be reliably
detected
again, you may have to completely power down the machine - even to the
extent of pulling out the power plug and replacing it, then booting up.


Regards,
Gerald.

> I have a server I'm working on here with two tdm cards in it.
> 4 FXS and 4FX0. Both cards work fine on their own. The problem
> lies with using both in the system at once. I have verified the
> IRQ's are fine. I have tried switching the slots the cards reside in,
no
> luck though. I am using ACPI but not APM. I am using gentoo latest, with 
> vanilla 2.6(.10) kernel and udev. CVS as of CVS-HEAD-03/02/05-03:42:41.
> 
> The problem is as follows:
> 
> If I power up the system from system off, the cards both get detected
> 
> If I reboot the system with reset button, ctrl alt del, or 'reboot'
> the TDM04P does not get detected.
> 
> If I then reboot, then hit the power button, and let it turn off, then
> turn it back on again and boot, it detects both cards fine.
> 
> I have tried searchign the list archives, but I have not had much luck. 
>   One person on IRC mentioned he's seen this before, but didn't
have any
> solutions.
> 
> Does anyone here know what might be the problem? or have a fix/work 
> around? I know I shouldnt be rebooting servers, but I have to make sure 
> it works upon reboot as it is going to be installed in a power-outtage 
> happy part of the world :)
I'm not having any problems like that with RHv9 (2.4 kernel), so I'd
have
to guess the issue is 'timing' related in whatever script that loads
your
tdm-zaptel drivers.

As I recall (as a non-v2.6 user), there was an issue with timing and 
someone added a sleep/wait statement in the startup script to bypass the
problem. Might consider finding your startup and add some additional time
to that sleep/wait.

Another approach to isolating the problem is to load the drivers by hand
paying close attention to error messages, delays, etc. If your not sure
how to do that, read your startup script and simply do those steps manually.

Someone mentioned unplugging power and/or removing the card. That approach
is totally BS. The same startup process is run regardless of whether one
is rebooting or starting from power-on. There is nothing on the tdm card
that stores values (no flash, no battery backup mem, etc). If the startup
script operates "one time" from any startup mode, it is setting the
tdm
registers, etc, correctly.

I'm away from the office this week, but I recall there was a readme shipped
with the zaptel source that discusses kernel 2.6 timing issues. Might look
for that in your src directory.

>> I have a server I'm working on here with two tdm cards in it.
>> 4 FXS and 4FX0. Both cards work fine on their own. The problem
>> lies with using both in the system at once. I have verified the
>> IRQ's are fine. I have tried switching the slots the cards reside
in, no
>> luck though. I am using ACPI but not APM. I am using gentoo latest,
with
>> vanilla 2.6(.10) kernel and udev. CVS as of CVS-HEAD-03/02/05-03:42:41.
>> 
>> The problem is as follows:
>> 
>> If I power up the system from system off, the cards both get detected
>> 
>> If I reboot the system with reset button, ctrl alt del, or
'reboot'
>> the TDM04P does not get detected.
>> 
>> If I then reboot, then hit the power button, and let it turn off, then
>> turn it back on again and boot, it detects both cards fine.
>> 
>> I have tried searchign the list archives, but I have not had much luck.
>>   One person on IRC mentioned he's seen this before, but didn't
have any
>> solutions.
>> 
>> Does anyone here know what might be the problem? or have a fix/work 
>> around? I know I shouldnt be rebooting servers, but I have to make sure
>> it works upon reboot as it is going to be installed in a power-outtage 
>> happy part of the world :)
>
>I'm not having any problems like that with RHv9 (2.4 kernel), so I'd
have
>to guess the issue is 'timing' related in whatever script that loads
your
>tdm-zaptel drivers.
>
>As I recall (as a non-v2.6 user), there was an issue with timing and 
>someone added a sleep/wait statement in the startup script to bypass the
>problem. Might consider finding your startup and add some additional time
>to that sleep/wait.
>
>Another approach to isolating the problem is to load the drivers by hand
>paying close attention to error messages, delays, etc. If your not sure
>how to do that, read your startup script and simply do those steps manually.
>
>Someone mentioned unplugging power and/or removing the card. That approach
>is totally BS. The same startup process is run regardless of whether one
>is rebooting or starting from power-on. There is nothing on the tdm card
>that stores values (no flash, no battery backup mem, etc). If the startup
>script operates "one time" from any startup mode, it is setting
the tdm
>registers, etc, correctly.
>
>I'm away from the office this week, but I recall there was a readme
shipped
>with the zaptel source that discusses kernel 2.6 timing issues. Might look
>for that in your src directory.
The approach of non-rebooting but power off and then power on (cold reboot), is
NOT BS.
For me had been the only way to "reboot" the server with the TDM
cards. If you make a hot
reboot (al least with my cards) the modprobe will have fatal errors and
won't load the
cards. I think it's MoBo related, maybe some kind of IRQ assignment not
released.

====Miguel Ruiz Velasco

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Matt Gibson wrote:
> Greetings,
>
> I have a server I'm working on here with two tdm cards in it.
> 4 FXS and 4FX0. Both cards work fine on their own. The problem
> lies with using both in the system at once. I have verified the
> IRQ's are fine. I have tried switching the slots the cards reside in, 
> no luck though. I am using ACPI but not APM. I am using gentoo latest, 
> with vanilla 2.6(.10) kernel and udev. CVS as of 
> CVS-HEAD-03/02/05-03:42:41.
>
> The problem is as follows:
>
> If I power up the system from system off, the cards both get detected
>
> If I reboot the system with reset button, ctrl alt del, or 'reboot'
> the TDM04P does not get detected.
>
> If I then reboot, then hit the power button, and let it turn off, then
> turn it back on again and boot, it detects both cards fine.
>
> I have tried searchign the list archives, but I have not had much 
> luck.  One person on IRC mentioned he's seen this before, but
didn't
> have any
> solutions.
>
> Does anyone here know what might be the problem? or have a fix/work 
> around? I know I shouldnt be rebooting servers, but I have to make 
> sure it works upon reboot as it is going to be installed in a 
> power-outtage happy part of the world :)
>
> TIA,
> Matts
>
>
Sounds like you would be fine if the power completely drops out. but 
there are 2 things I can
think of.

In zconfig.h (in the zaptel directory) there is a line at the bottom (at 
least in my cvs version)

/*

 * Uncomment if you happen have an early TDM400P Rev H 
which                                                                        

 * sometimes forgets its PCI ID to have wcfxs match essentially 
all                                                                
 * subvendor 
ID's

 */

#define TDM_REVH_MATCHALL    

The other is a bit more involved and can be found here:

http://lists.digium.com/pipermail/asterisk-users/2004-October/070000.html

This might be a bit different with the newer software, but the basic 
idea is the same

Regards
Greg