RE: STI, HLT in acpi_cpu_idle_c1

From: Gerrit Nagelhout (gnagelhout_at_sandvine.com)
Date: 06/25/04

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    To: 'John Baldwin' <jhb@FreeBSD.org>, freebsd-current@FreeBSD.org
Date: Fri, 25 Jun 2004 12:25:51 -0400

    John Baldwin wrote:
    >
    > This is why it isn't receiving interrupts. It thinks one is
    > still being
    > serviced and is waiting on the EOI. That is IPI_HARDCLOCK again.
    > Hmm, try this hack (you can turn idle_hlt back on if you want
    > since it doesn't
    > seem to have an effect):
    >
    > Index: intr_machdep.c
    > ===================================================================
    > RCS file: /usr/cvs/src/sys/i386/i386/intr_machdep.c,v
    > retrieving revision 1.6
    > diff -u -r1.6 intr_machdep.c
    > --- intr_machdep.c 28 May 2004 17:50:07 -0000 1.6
    > +++ intr_machdep.c 25 Jun 2004 15:42:00 -0000
    > @@ -184,6 +184,10 @@
    > clkintr_pending = 1;
    >
    > if (ih != NULL && ih->ih_flags & IH_FAST) {
    > +#if 1
    > + isrc->is_pic->pic_disable_source(isrc);
    > + isrc->is_pic->pic_eoi_source(isrc);
    > +#endif
    > /*
    > * Execute fast interrupt handlers directly.
    > * To support clock handlers, if a handler registers
    > @@ -202,7 +206,11 @@
    > else
    > ih->ih_handler(ih->ih_argument);
    > }
    > +#if 0
    > isrc->is_pic->pic_eoi_source(isrc);
    > +#else
    > + isrc->is_pic->pic_disable_source(isrc);
    > +#endif
    > error = 0;
    > critical_exit();
    > } else {
    >
    > --
    > John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
    > "Power Users Use the Power to Serve" = http://www.FreeBSD.org
    >

    This patch seems to have broken something with the aac driver.
    I get the following message over and over on bootup:

    aac0: COMMAND 0xca593a14 TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593a8c TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593b04 TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593b7c TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593bf4 TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593c6c TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593ce4 TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593d5c TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593dd4 TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593e4c TIMEOUT AFTER 40 SECONDS
    aac0: COMMAND 0xca593ec4 TIMEOUT AFTER 40 SECONDS

    Thanks,

    Gerrit
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