On Tue, 18 Sep 2007 [EMAIL PROTECTED] wrote: > > I have a CAN PCI card installed on my Ubuntu box. > I understand that PCI interrupts should be level rather than edge > triggered. > > The output of cat /proc/interrupts is :- > > CPU0 > 0: 1614601 IO-APIC-edge timer > 1: 164 IO-APIC-edge i8042 > 8: 3 IO-APIC-edge rtc > 9: 1 IO-APIC-level acpi > 12: 0 IO-APIC-edge CAN-ACx-PCI_01 > 14: 65786 IO-APIC-edge ide0 > 169: 3220 IO-APIC-level eth0, [EMAIL PROTECTED]:0000:00:02.0 > 177: 46459 IO-APIC-level eth1 > 209: 0 IO-APIC-level uhci_hcd:usb3, eth2 > 217: 2 IO-APIC-level uhci_hcd:usb1, ehci_hcd:usb4 > 225: 697 IO-APIC-level uhci_hcd:usb2 > NMI: 0 > LOC: 1614399 > ERR: 0 > MIS: 0 > > You see that irq 12 CAN-ACx-PCI_01 is edge triggered. > Is there any way of forcing the BIOS to see the interrupt as a > level-triggered one?
It's done in the driver. IRQ12 can be shared, so the driver needs to request the IRQ as a shared interrupt. Cheers, Dick Johnson Penguin : Linux version 2.6.22.1 on an i686 machine (5588.30 BogoMips). My book : http://www.AbominableFirebug.com/ _ **************************************************************** The information transmitted in this message is confidential and may be privileged. Any review, retransmission, dissemination, or other use of this information by persons or entities other than the intended recipient is prohibited. If you are not the intended recipient, please notify Analogic Corporation immediately - by replying to this message or by sending an email to [EMAIL PROTECTED] - and destroy all copies of this information, including any attachments, without reading or disclosing them. Thank you. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
