Date: Wed, 21 Apr 2004 19:48:52 -0700 (PDT) From: Nate Lawson <nate@root.org> To: "Brown, Len" <len.brown@intel.com> Cc: freebsd-acpi@freebsd.org Subject: Re: ACPI SCI flags Message-ID: <20040421194653.F40302@root.org> In-Reply-To: <BF1FE1855350A0479097B3A0D2A80EE002FF25F0@hdsmsx402.hd.intel.com> References: <BF1FE1855350A0479097B3A0D2A80EE002FF25F0@hdsmsx402.hd.intel.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 9 Apr 2004, Brown, Len wrote: > Nate, > > I think we finally got the vague part of the ACPI spec > regarding SCI polarity/trigger cleared up. In Linux > as of 2.4.26 and 2.6.5 we now do this: > > PIC mode: > force level/low via ELCR always. Did you find that made a difference on some systems? If so, which ones? The opinion here was that ELCR is probably EISA-only. > APIC mode: > no override: > force level/low always > override w/ explicit polarity/trigger: > do exactly what override says > override w/ "compatible" polarity/trigger: > compatible trigger = level > compatible polarity = low > > Of course this makes the SCI a special case WRT > interpreting "compatibility" as compared to other > overrides. By "compatible" do you mean "conforming"? If not, what do you mean for "compatible"? -Nate
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040421194653.F40302>