I am using an IBM PowerPC 405Gr and have been trying to set up IRQ5 as an interrupt. My problem is that the UIC0_ER (interrupt enable) register is not being set by the request_irq call. I have used enable_irq after request_irq but this also has no affect. As this is from a driver, I have even tried setting the correct bit (bit 30 for IRQ 5) directly, by reading UIC0_ER, ORing bit 30 and writing the value back - reading and writing were performed using mfdcr and mtdcr. I also use mtmsr to set the general interrupt enable bit (EE - bit 16)) in the MSR register.
Does anyone know of other calls that need to be made in order to allow the interrupt enable register to stay set? Nigel Merritt ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
