We have a custom board with a 405GP connected to a PIIX4 southbridge. The PIIX4 contains 2 cascaded 8259 interrupt controllers (16 irqs). 2 IDE buses where connected to IRQ14 and IRQ15 with success(Hard Disk, CD-RW work fine). IRQ5 is connected to an SMSC37C78 floppy controller. During the floppy.o module insertion (with appropriate IRQ and DMA ), i've got 3 PIIX4 interrupts (2 correct IRQ5 and an unhandled IRQ0 (PIIX4 internal timer)). If i have a look with a logical analyser, the 3rd IRQ seems also generated by the Floppy controller(IRQ5) but was read as an IRQ0 and (the 3rd)IRQ5 is never acknowledge. Does anyone met this pb ? The insmod command doesn't seem to fail but the mount /dev/fd0 /mnt/floppy command fail because no more IRQ5 are genereted. Any idea ?
Thanks - Philippe. Note : I'am running MVL PE (2.4.17) with hollis patch for the i8259.c ( http://lists.linuxppc.org/linuxppc-dev/200112/msg00043.html ) ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
