powerpc interrupt handling

[Sebastian Huber]

Kate Feng wrote:
> Sebastian Huber wrote:
>> Jennifer Averett wrote:
>>   
>>> I'm working with RTEMS 4.9 at an offsite location and am a little
>>> confused about what the correct interrupt handler call to use for new
>>> and updated powerpc ports.  There seem to be several that exist.
>>>  
>>> rtems_interrupt_handler_install
>>>     
>> This one if it is available (= BSPs that use
>> c/src/lib/libbsp/shared/include/irq-generic.h etc.)
>>
>>   
>>> bsp_interrupt_handler_install
>>>     
>> In which header file is this one?
>>
>>   
>>> BSP_install_rtems_irq_handler/BSP_install_rtems_shared_irq_handler
>>>     
>> These are from my point of view obsolete.
>>   
> Not from my point of view.
> 
> BSP_install_rtems_irq_handler/BSP_install_rtems_shared_irq_handler
> 
> are for  BSP  that uses powerpc new-exceptions.  

No, the interrupt handler dispatch facility is independent of the exception
code.  It is true that a BSP_install_rtems*irq_handler() implementation is
under the new-exceptions directory.  The stuff in c/src/lib/libbsp/shared has a
better API, implementation and documentation.  It also supports the
BSP_install_rtems_* as legacy API.

> However, I would like
> to suggest if it could be combined into one name as

I suggest to wipe out these BSP_install_rtems_* things in the long run.

> 
> BSP_install_rtems_irq_handler
> 
> The BSP_SHARED_HANDLER_SUPPORT defined in irq/irq.h would
> decide if it should be shared or not.

The overhead for a shared interrupt support is marginal.  There is no need to
make this option available.

> 
> Just a thought or suggestion.
> 
> Kate
> 
>>   
>>>  
>>>  
>>> Thanks
>>> Jennifer Averett
>>>  
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> rtems-users mailing list
>>> rtems-users at rtems.com
>>> http://rtems.rtems.org/mailman/listinfo/rtems-users
>>>     
>>
>>   
> 
> _______________________________________________
> rtems-users mailing list
> rtems-users at rtems.com
> http://rtems.rtems.org/mailman/listinfo/rtems-users


-- 
Sebastian Huber, Embedded Brains GmbH

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