We are having a problem with an external interrupt not actually being received / detected on the MPC8572.
This external device 'believes' that it has sent an interrupt (over PCIe) to the MPC8572 and we believe that the associated ExVPR register has correctly unmasked/configured this correctly. But, still NO interrupt... If you read the documentation about this configuration register, it indicates that there is some type of "IPR" register internal to the 8572 that indicates if an interrupt has been received by the PIC... We want to read that IPR register to verify that: a) the external device has sent the interrupt and we have configured something wrong in the chip b) there is no pending interrupt (thus none received) from this external device... Is there any way (hook (indirection) or crook (aka: secret register)) that would allow us to read this register? From all my investigations it looks like there isn't a 'straight forward' / documented way to do so...I am hoping you guys have gone beyond the 'straight forward' means and have found a way... Thanks in Advance... Sincerely... Tom Morrison Principal S/W Engineer Tmorrison (at) empirix (dot) com www.empirix.com _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded