Date: Tue, 16 Nov 2004 15:22:29 -0800 From: Nate Lawson <nate@root.org> To: John Baldwin <jhb@FreeBSD.org> Cc: scottl@FreeBSD.org Subject: Re: New ACPI PCI Link Routing code Message-ID: <419A8BB5.9050201@root.org> In-Reply-To: <200411161339.13818.jhb@FreeBSD.org> References: <200411111737.00537.jhb@FreeBSD.org> <200411161339.13818.jhb@FreeBSD.org>
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John Baldwin wrote: > On Thursday 11 November 2004 05:37 pm, John Baldwin wrote: > >>I've done some work on the ACPI PCI link code to make it a bit more like >>$PIR in that it is link centric and uses actual new-bus devices for each >>device link. One benefit of this is that unused links will be disabled now >>which might help with interrupt aliasing problems on machines using APICs. >>Also, instead of routing IRQs for links via PCI device numbers using >>tunables, they are now routed via the link name ala $PIR. Thus, one uses >>'hw.pci.link.LNKA.irq=X' to route LNKA to IRQ X. Also, when choosing a >>virgin interrupt, we no longer try to guess at which IRQs might be used by >>ISA devices. Instead, we only use known-good IRQs including IRQs that the >>BIOS has already used and the SCI if the link is being routed via ISA IRQs. >>The patch is at http://www.FreeBSD.org/~jhb/patches/acpi_pci_link.patch >>Please test and let me know if there are any problems, thanks. > > > I've updated this to the latest current and verified that it compiles ok > (since I had at least one report that it didn't patch cleanly and/or > compile). I plan to commit this in a couple of days unless I hear some sort > of negative feedback. I think it's ok to commit, modulo Andrew's panic. I hope it generates enough debugging info so that we can quickly fix things in -current as reports arise. Thanks for working on this, -- Nate
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