I'm using the South Bridge's 8259 controllers and putting the 8245 EPIC in pass through mode, so all internal 8245 interrupts are routed out the L_INT pin to one of the ALI's PCI_IRQ pins.
Does this seem like something very wrong? I originally thought this would be the easiest way to handle this from an IRQ standpoint, but now know that I have never seen anyone else do this. >>> Greg Allen <gallen at arlut.utexas.edu> 04/10/02 05:05PM >>> >{ 0, BASE_BAUD_8245_DUART, AMX2275_SERIAL_2, 9, STD_COM_FLAGS, /* ttyS2 */ \ > iomem_base: (u8 *)AMX2275_SERIAL_2, \ > io_type: SERIAL_IO_MEM }, \ >{ 0, BASE_BAUD_8245_DUART, AMX2275_SERIAL_3, 9, STD_COM_FLAGS, /* ttyS3 */ \ > iomem_base: (u8 *)AMX2275_SERIAL_3, \ > io_type: SERIAL_IO_MEM }, This may or may not be the problem, but your IRQs are faulty. The internal 8245 IRQs are 137 and 138. You need to call openpic_set_sources() before openpic_init() to get these initialized. My utx8245_init_IRQ() contains: openpic_set_sources(0, 32, NULL); /* up to serial interrupt 15 */ openpic_set_sources(129, 3, NULL); /* MPC8245 I2C, DMA0, DMA1 */ openpic_set_sources(134, 1, NULL); /* MPC8245 Message Unit */ openpic_set_sources(137, 2, NULL); /* MPC8245 DUART */ openpic_init(1, 0, 0, -1); L8r, -Greg -- Gregory E. Allen, MSEE Engineering Scientist Applied Research Laboratories: The University of Texas at Austin ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/