In the last episode (Feb 03), patrick said: > On Tue, Jan 27, 2009 at 2:34 PM, Dan Nelson <dnel...@allantgroup.com> wrote: > > In the last episode (Jan 27), patrick said: > >> I'm running FreeBSD 7.1 on a new Dell Inspiron 530s. I'm having an > >> issue where the same IRQ is being assigned for multiple devices, and I > >> have a device that absolutely needs its own IRQ. The BIOS is very > >> limiting, and won't allow me to disable shared IRQ assignment. Some > >> suggestions I've read about booting FreeBSD with ACPI hasn't been an > >> option, because without it enabled, FreeBSD does not see the SATA > >> controllers/disks, and thus won't boot. Linux has a utility called > >> irqbalance (http://www.irqbalance.org/) that seems like it could be > >> promising, but of course it is Linux-specific. Is there any way in > >> FreeBSD that I can help the system decide which IRQs to assign to what? > > > > irqbalance doesn't do what you think it does; it simply pins interrupt > > handlers on particular CPUs. The only way to ensure that a given device > > has an IRQ line to itself is to look at your motherboard documentation, > > determine which IRQs are wired to which PCI slots, and rearrange your > > cards to assign your troublesome device an IRQ of its own. Some > > motherboards let you assign onboard devices (NICs, parallel port, etc) > > to different interrupts, too.
> Hmmm... This Dell motherboard is extremely limited in what can be > controlled. There are seven USB controllers, and no way I can see to > disable some of them. I wonder if there's some way I can take some > blocks out of ACPI code captured from acpidump in order to have it not > load/be aware of some of those USB controllers that are unneeded and > using an IRQ I need for a voice card I want to use with Asterisk? You should be able to add some hints to your /boot/loader.conf to tell the kernel not to use those USB controllers. Something like hint.uhci.0.disabled=1 hint.ehci.0.disabled=1 repeated for whatever other devices get probed on that IRQ. -- Dan Nelson dnel...@allantgroup.com _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"