All, actually I'm having trouble getting the IRQ0 work on a MPC8343 with 2.6.25-rc8. There's an external PCI device connected to it ....
Regarding to the manual IRQ0 is somewhat special and has Vector 48 assigned. Therefore my dts entry for this device looks like : interrupt-map = <0x5800 0 0 1 &ipic 0x30 0x8 ... >; Having a look on virq mapping gives : mvBL-M7> cat /sys/kernel/debug/powerpc/virq_mapping virq hwirq chip name host name 16 0x0000e IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 17 0x0000f IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 18 0x00009 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 20 0x00010 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 32 0x00020 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 33 0x00021 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 34 0x00022 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 38 0x00026 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] 48 0x00030 IPIC /[EMAIL PROTECTED]/[EMAIL PROTECTED] After loading the device driver (=mvbcdma) the irq shows up correctly. mvBL-M7> cat /proc/interrupts CPU0 16: 603 IPIC Level i2c-mpc 17: 8 IPIC Level i2c-mpc 18: 295 IPIC Level serial 20: 341 IPIC Level mpc83xx_spi 32: 2 IPIC Level enet_tx 33: 3 IPIC Level enet_rx 34: 0 IPIC Level enet_error 38: 0 IPIC Level ehci_hcd:usb1 48: 0 IPIC Level mvbcdma0 BAD: 0 As soon as the device generates an interrupt I get : irq 48: nobody cared (try booting with the "irqpoll" option) handlers: [<d18d66e8>] (mvbcdma_irq+0x0/0x180 [mvbcdma]) Disabling IRQ #48 The handler _would_ have returned IRQ_RETVAL(1). Obviously the handler isn't called at all - but why ? Using "nm" on the kernel module gives : 000006e8 t mvbcdma_irq ->offset 0x6e8 inside module matches with output regarding handler. Any help is welcome ! regards, Andre Schwarz MATRIX VISION GmbH, Talstraße 16, DE-71570 Oppenweiler - Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschäftsführer: Gerhard Thullner, Werner Armingeon, Uwe Furtner _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev