The sandpoint code sets up the EPIC to cascade to the 8259. I've changed it to try to use the openpic for all irqs. And changed the sandpoint_map[] in sandpoint_pci.c to agree with my hardware. And all other sandpoint specific irq stuff, including #if 0'ing out all code related to the 8259 in the sandpoint files.
FYI, I've tried to create 2 replacement files for sandpoint_setup.c and sandpoint_pci.c with different names but changing the Makefile where the related object files are referenced is not sufficient to have the new files included in the build. I don't understand all the components that control a build well enough yet to make successful changes to the process. I wish there was some detailed explaination somewhere. I'm still uncertain that I've done all the right things. In sandpoint_init_IRQ(): - I'm uncertain about: irq_desc[i].ctl = &open_pic where i is less than 16. Should I include 0 to 15 for this? - Since there is no setup for the 8259 now in 'my' modified code, is there someplace amongst all the openpic init stuff where I need to explicitly provide EPIC register setup for all interrupts to direct mode? Thanks, Ron ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
