On Fri, Jul 3, 2009 at 9:50 AM, Sepherosa Ziehau<[email protected]> wrote: > On Fri, Jul 3, 2009 at 2:01 AM, Matthew > Dillon<[email protected]> wrote: >> >> :Yep. All the ACPI-related work is here: >> : >> : http://github.com/polachok/dragonflybsd/tree/acpi2 >> : >> :See dmesg attached for example. > > It shows ICU works. > >> >> Ok, how does this integrate with the APIC_IO kernel config >> option verses not having it? Will not having APIC_IO still >> back-off to just using the BIOS intr defaults for the >> ICU (8259)? > > I think before bringing the ACPI code, we have to change our APIC > interrupt handling code: > FreeBSD uses ACPI GSI (ACPI3.0a, page120) concept directly (I think > they apply it to the MP table too). So more than 24 idt vectors may > be used, if, for example, there are two 24pin I/O APICs. As far as I > understand our apic_abi.c, we only support 24 idt vectors; and the > gd_[if]pending limit us to 32 vectors. Before we could sort that out > or at least introduce another mapping layer, bringing in ACPI routing
BTW, I prefer not to introduce another mapping layer, so we could prepare the MSI/MSI-X work :) Best Regards, sephe -- Live Free or Die
