Hmm. Happened to be at the machine when I saw the last comment, so I decided
to poke at it.
Attempting to recompile my SR1611NX DSDT with iasl (note that the -dc option
doesn't seem to be working as advertised, but simply running `iasl DSDT.dsl`
works at the expense of obliterating the contents of the directory, and `iasl
-c DSDT.dsl` will try the same but create an empty .aml and a populated .src -
I guess because the errors prevent it from actually generating the .aml).
...
Intel ACPI Component Architecture
ASL Optimizing Compiler version 20090521 [Jun 30 2009]
Copyright (C) 2000 - 2009 Intel Corporation
Supports ACPI Specification Revision 3.0a
DSDT.dsl 284: Method (\_WAK, 1, NotSerialized)
Warning 1080 - ^ Reserved method must return a value (_WAK)
DSDT.dsl 410: WBYT (TSAD, 0x4F, Local0)
Error 4050 - ^ Method local variable is not
initialized (Local0)
DSDT.dsl 632: CSMS ()
Warning 1099 - ^ Statement is unreachable
DSDT.dsl 646: CSMS ()
Warning 1099 - ^ Statement is unreachable
DSDT.dsl 1406: Name (_PSW, 0x01)
Error 4078 - ^ Reserved name must be a control
method (with arguments)
DSDT.dsl 1428: Name (_PSW, 0x01)
Error 4078 - ^ Reserved name must be a control
method (with arguments)
DSDT.dsl 1450: Name (_PSW, 0x01)
Error 4078 - ^ Reserved name must be a control
method (with arguments)
DSDT.dsl 2985: Field (SECF, WordAcc, NoLock, Preserve)
Error 4027 - ^ Access width is greater than region size
DSDT.dsl 2987: SCFN, 8
Error 4028 - ^ Access width of Field Unit extends beyond
region limit
DSDT.dsl 3534: Method (IPHP, 2, NotSerialized)
Warning 1087 - ^ Not all control paths return a value
(IPHP)
DSDT.dsl 3888: If (LEqual (HGDT (Local1), 0x01))
Warning 1092 - ^ Called method may not
always return a value
DSDT.dsl 3912: If (LEqual (IPHP (0x06,
Local1), Local3))
Warning 1092 - Called method may not always return a value ^
DSDT.dsl 3946: Method (HGDT, 1, NotSerialized)
Warning 1087 - ^ Not all control paths return a value
(HGDT)
DSDT.dsl 3994: And (IPHP (0x07, Arg0), Arg1, Local2)
Warning 1092 - ^ Called method may not always
return a value
ASL Input: DSDT.dsl - 5409 lines, 165894 bytes, 1913 keywords
Compilation complete. 6 Errors, 8 Warnings, 0 Remarks, 626 Optimizations
...
I know slightly less than enough about ACPI to be dangerous; this is
what I've been able to figure out thus far:
Our troublesome GPE.L09 is a "General Purpose Event" register.. but I
wish I had a clue what that "SMFN" method that relates to it is
[supposed to be] doing.
As to what iasl dislikes (but MSFT Compiler Version 0x0100000E (16777230)
obviously was happy to generate):
In the "STOS" method:
DSDT.dsl 410: WBYT (TSAD, 0x4F, Local0)
Error 4050 - ^ Method local variable is not
initialized (Local0)
...the failure to initialize can be cured by a "Store (Zero, Local0)"
before that line. I'm not sure if that's really the right thing to do
or not since I have no clue what it's writing to and how the MSFT
compiler would treat the unassigned variable [looks like the arguments
there are address, command, data].
DSDT.dsl 1406: Name (_PSW, 0x01)
Error 4078 - ^ Reserved name must be a control
method (with arguments)
DSDT.dsl 1428: Name (_PSW, 0x01)
Error 4078 - ^ Reserved name must be a control
method (with arguments)
DSDT.dsl 1450: Name (_PSW, 0x01)
Error 4078 - ^ Reserved name must be a control
method (with arguments)
These are tricky; thus far all I've found is that _PSW ("power state
wake") was part of ACPI 1.0, and was deprecated by ACPI 3.0 - but
'deprecated' shouldn't mean 'keels over and fails,' right? Or is
something very malformed here?
DSDT.dsl 2985: Field (SECF, WordAcc, NoLock, Preserve)
Error 4027 - ^ Access width is greater than region size
DSDT.dsl 2987: SCFN, 8
Error 4028 - ^ Access width of Field Unit extends beyond
region limit
Could be the big culprit -
Mutex (FLMX, 0x00)
OperationRegion (SECF, SystemMemory, 0x000F97E0, 0x01)
Field (SECF, WordAcc, NoLock, Preserve)
{
SCFN, 8
}
...it's trying to access a region declared to be byte-sized with the
"WordAcc" size. Using "ByteAcc" instead cures that.
Unfortunately, without a clue on the _PSW trouble I can't actually compile this
and see if it solves everything.
(And why this was no issue before and only became a regression now... who
knows?)
--
Karmic desktop livecd constant kernel ACPI exception messages: AE_LIMIT,
Returned by Handler for [SystemIO] 20090521 evregion-424
https://bugs.launchpad.net/bugs/475704
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