Interrupt handling via OpenPIC

Interrupt handling via OpenPIC

[Tim Moloney]

I am writing a device driver for a custom PMC card, and I'm having
trouble with the interrupt service routine.

Although the PCI configuration block says that the board's interrupt
is 9, I am receiving interrupt 3.  I know that the OpenPIC is supposed
to remap the interrupts but I don't quite understand the process.
I've looked at the board's users manual and skimmed the Linux kernel
but I can't find a good example of what to do.

Can anyone provide pointers to documentation, example code, etc. that
shows how I can reconcile what the kernel thinks the interrupt is with
what in actually being generated?

Additional info:
I am developing on a Synergy Microsystems VSS4 board.  This is a
quad-G4 VME board that has the following:
  IBM MPIC-2 interrupt controller
  Motorola MPC106 Grackle PCI bridge/memory controller
  Symbios 53c885 Ethernet/SCSI controller
  Tundra Universe II PCI-VME64 bridge
  DEC/Intel 21554 PCI-PCI bridge

Thanks for any help.

Tim Moloney

ManTech Real-time Systems Laboratory
2015 Cattlemen Road
Sarasota, FL  34232
(941) 377-6775 x208


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Interrupt handling via OpenPIC

[Tim Moloney]

I am writing a device driver for a custom PMC card, and I'm having
trouble with the interrupt service routine.

Although the PCI configuration block says that the board's interrupt
is 9, I am receiving interrupt 3.  I know that the OpenPIC is supposed
to remap the interrupts but I don't quite understand the process.
I've looked at the board's users manual and skimmed the Linux kernel
but I can't find a good example of what to do.

Can anyone provide pointers to documentation, example code, etc. that
shows how I can reconcile what the kernel thinks the interrupt is with
what in actually being generated?

Additional info:
I am developing on a Synergy Microsystems VSS4 board.  This is a
quad-G4 VME board that has the following:
  IBM MPIC-2 interrupt controller
  Motorola MPC106 Grackle PCI bridge/memory controller
  Symbios 53c885 Ethernet/SCSI controller
  Tundra Universe II PCI-VME64 bridge
  DEC/Intel 21554 PCI-PCI bridge

Thanks for any help.

Tim Moloney

ManTech Real-time Systems Laboratory
2015 Cattlemen Road
Sarasota, FL  34232
(941) 377-6775 x208


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: Interrupt handling via OpenPIC

[Cort Dougan]

You'll have to talk to synergy about that one.  I'm not sure how the PMC
interrupts are routed on that board (I've never tested a PMC card on it).

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: Interrupt handling via OpenPIC

[Tim Moloney]

Thanks.  I wasn't sure if this was a general Linux PPC kernel question
or
a board specific question.  I working with a Synergy tech. support
person
now.

Tim Moloney

ManTech Real-time Systems Laboratory
2015 Cattlemen Road
Sarasota, FL  34232
(941) 377-6775 x208

----- Original Message -----
From: "Cort Dougan" <cort@fsmlabs.com>
To: "Tim Moloney" <moloney@mrsl.com>
Cc: <linuxppc-embedded@lists.linuxppc.org>
Sent: Wednesday, April 11, 2001 3:56 PM
Subject: Re: Interrupt handling via OpenPIC


> You'll have to talk to synergy about that one.  I'm not sure how the
PMC
> interrupts are routed on that board (I've never tested a PMC card on
it).


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/