Date: Fri, 10 Dec 2004 19:04:46 +0100 From: Ulrich Spoerlein <q@uni.de> To: Nate Lawson <nate@root.org> Cc: acpi@FreeBSD.org Subject: Re: suspend/resume improved? Message-ID: <20041210180446.GA768@galgenberg.net> In-Reply-To: <41B76AF2.3040204@root.org> References: <41B4E577.9060502@root.org> <41B50754.10604@centtech.com> <41B50C12.6070103@root.org> <20041208095845.GA896@galgenberg.net> <41B76AF2.3040204@root.org>
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On Wed, 08.12.2004 at 12:58:26 -0800, Nate Lawson wrote:
> Add an infinite loop at various points in the suspend process until it
> hangs but doesn't reset. Start with the end of the first function below
> and work your way backwards. Once you identify the exact place the
> reset occurs, we can figure out why. Use boot -s to keep from having to
> fsck on each reset or hang.
>
> AcpiEnterSleepState():sys/contrib/dev/acpica/hwsleep.c
Line 444 is the culprit:
ACPI_FLUSH_CPU_CACHE ();
Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Putting the loop before AcpiHwRegisterWrite will enter infinite loop,
putting it after it -> Reset
Running with ACPI_DEBUG, this is the last thing I see (hand transcribed)
acpi_lid0: wake_prep enabled for \_SB.LID (S3)
acpi_button0: wake_prep enabled for \_SB.PBTN (S3)
unknown: wake_prep disabled wake for \_SB.PCI0.USB0 (S3)
unknown: wake_prep disabled wake for \_SB.PCI0.USB1 (S3)
unknown: wake_prep disabled wake for \_SB.PCI0.USB2 (S3)
unknown: wake_prep disabled wake for \_SB.PCI0.USB3 (S3)
== acpi_printcpu() debug dump ==
gdt[0077:c0610620] idt[07ff:c06109e0] ldt[0030] tr[0020] efl[00000092]
eax[00000001] ebx[c0e31080] ecx[c0da569c] edx[0009e227]
esi[00000000] edi[00000003] ebp[c5c72af8] esp[c5c72adc]
cr0[8005003b] cr2[08049ed4] cr3[03e25000] cr4[00000691]
cs[0008] ds[0010] es[0010] fs[0018] gs[008f] ss[0010]
ASL and DSDT can be found here
http://www.galgenberg.net/~q/freebsd/
Ulrich Spoerlein
--
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Ok, which part of "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn."
didn't you understand?
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