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Date:      Wed, 28 May 2014 04:08:36 -0700
From:      Sean Bruno <sbruno@ignoranthack.me>
To:        John Baldwin <jhb@freebsd.org>
Cc:        "freebsd-acpi@freebsd.org" <freebsd-acpi@freebsd.org>
Subject:   Re: Investigating failed suspend/resume T61
Message-ID:  <1401275319.2355.0.camel@bruno>
In-Reply-To: <201405271614.30168.jhb@freebsd.org>
References:  <1400861698.1126.0.camel@bruno> <201405271132.55387.jhb@freebsd.org> <1401212388.1128.2.camel@bruno> <201405271614.30168.jhb@freebsd.org>

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On Tue, 2014-05-27 at 16:14 -0400, John Baldwin wrote:
> On Tuesday, May 27, 2014 1:39:48 pm Sean Bruno wrote:
> > On Tue, 2014-05-27 at 11:32 -0400, John Baldwin wrote:
> > > On Friday, May 23, 2014 12:14:58 pm Sean Bruno wrote:
> > > > Trying to figure out the failures on suspend resume for the T61 I have.
> > > > I see a little acpi error at host startup, but I don't think its
> > > > related.  However, I'm not sure what it means.
> > > > 
> > > > sean
> > > > 
> > > > ------
> > > > 
> > > > FreeBSD 11.0-CURRENT #1 r265820: Sat May 10 15:13:37 PDT 2014
> > > >     sbruno@bruno:/usr/obj/usr/src/sys/BRUNO amd64
> > > > FreeBSD clang version 3.4 (tags/RELEASE_34/final 197956) 20140216
> > > > VT: running with driver "vga".
> > > > CPU: Intel(R) Core(TM)2 Duo CPU     T7300  @ 2.00GHz (1995.04-MHz
> > > > K8-class CPU)
> > > >   Origin="GenuineIntel"  Id=0x6fa  Family=0x6  Model=0xf  Stepping=10
> > > > 
> > > > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> > > > 
> > > > Features2=0xe3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
> > > >   AMD Features=0x20100800<SYSCALL,NX,LM>
> > > >   AMD Features2=0x1<LAHF>
> > > >   TSC: P-state invariant, performance statistics
> > > > real memory  = 2147483648 (2048 MB)
> > > > avail memory = 2007138304 (1914 MB)
> > > > Event timer "LAPIC" quality 400
> > > > ACPI APIC Table: <LENOVO TP-7L   >
> > > > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> > > > FreeBSD/SMP: 1 package(s) x 2 core(s)
> > > >  cpu0 (BSP): APIC ID:  0
> > > >  cpu1 (AP): APIC ID:  1
> > > > ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Gpe1Block: 0/32
> > > > (20130823/tbfadt-601)
> > > > ACPI BIOS Warning (bug): Optional FADT field Gpe1Block has zero address
> > > > or length: 0x000000000000102C/0x0 (20130823/tbfadt-630)
> > > 
> > > It might be related as Gpe1Block describes a register set that IIRC is used
> > > to enter sleep states.  Can you put your acpidump -t somewhere?  (No need
> > > for -d as this is in the FADT, not the DSDT.)
> > > 
> > 
> > 
> > Here --> http://people.freebsd.org/~sbruno/T61_acpidump.txt
> 
> Ah, so the warning is due to the fact that the 'FACP' table has 'X_GPE1_BLOCK'
> but no 'GPE1_BLOCK'.  (Note how it has both 'GPE0_BLOCK' and 'X_GPE0_BLOCK' 
> which say the same thing.)  Try this workaround to quiet the warning.  I've
> no idea if it will help at all with suspend/resume.
> 
> Index: sys/contrib/dev/acpica/components/tables/tbfadt.c
> ===================================================================
> --- tbfadt.c	(revision 266442)
> +++ tbfadt.c	(working copy)
> @@ -601,6 +601,10 @@ AcpiTbValidateFadt (
>              ACPI_BIOS_WARNING ((AE_INFO,
>                  "32/64X length mismatch in FADT/%s: %u/%u",
>                  Name, ACPI_MUL_8 (Length), Address64->BitWidth));
> +	    if (Length == 0)
> +	    {
> +		Length = ACPI_DIV_8 (Address64->BitWidth);
> +	    }
>          }
>  
>          if (FadtInfoTable[i].Type & ACPI_FADT_REQUIRED)
> 
> 

One warning went away, one remains, not sure if its meaningful or not.

ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Gpe1Block: 0/32
(20130823/tbfadt-601)


sean




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