Date: Tue, 9 Apr 2013 16:08:09 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Adrian Chadd <adrian@freebsd.org>, lev@freebsd.org, Poul-Henning Kamp <phk@phk.freebsd.dk> Subject: Re: Intel D2500CC motherboard and strange RS232/UART behavior Message-ID: <201304091608.09257.jhb@freebsd.org> In-Reply-To: <CAJ-Vmo=_9rL4FarGqBS0BkC-vPg=LbFt3boYk73QijaB6=0Q-A@mail.gmail.com> References: <229402991.20130407172016@serebryakov.spb.ru> <5847.1365365701@critter.freebsd.dk> <CAJ-Vmo=_9rL4FarGqBS0BkC-vPg=LbFt3boYk73QijaB6=0Q-A@mail.gmail.com>
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On Sunday, April 07, 2013 5:46:34 pm Adrian Chadd wrote: > On 7 April 2013 13:15, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote: > > In message <1428566376.20130407234355@serebryakov.spb.ru>, Lev Serebryakov writ > > es: > > > >>It doesn't look so. And uart1 and uart3 doesn't have interrupt > >>according to `vmstat -i' (but share irq4 according to boot messages). > > > > Ohh, there you go... > > > > Interrupt sharing on ISA requires special magic... > > .. did we really break shared interrupt handling on ISA? When did it ever work? > God, you made me remember ISA interrupt sharing. I thought the main > source of evilness is edge shared interrupts? Right, and ISA are edge and active-hi, so generally not shareable. Lev, Can you assign different interrupts via the BIOS somehow? -- John Baldwin
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