embedded design, I intend to use NMI of MIPS 4Kc processor (rather
than IRQ0 or IRQ1 .....) for an external Interrupt Source. The external
Interrupt source is a video capture device which interrupts the MIPS 4Kc CPU via
its NMI (Non-Maskable Interrupt) line, whenever it has one complete frame.
I need to write the driver for that device in Linux-2.4.20. The
request_irq function provided by Linux takes a
digit value from 0 to 5 to map external interrupt sources to any one of
CPUs Interrupt pins. How can I request and implement my interrupt handler
routine for the NMI of MIPS processor ?.