Date: Fri, 20 Feb 2009 09:26:29 -0800 From: "Moore, Robert" <robert.moore@intel.com> To: "Moore, Robert" <robert.moore@intel.com> Subject: ACPICA version 20090220 released Message-ID: <4911F71203A09E4D9981D27F9D83085814AFFAE9@orsmsx503.amr.corp.intel.com>
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20 February 2009. Summary of changes for version 20090220:
This release is available at www.acpica.org/downloads.
1) ACPI CA Core Subsystem:
Optimized the ACPI register locking. Removed locking for reads from the ACP=
I bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock i=
s not required when reading the single-bit registers. The AcpiGetRegisterUn=
locked function is no longer needed and has been removed. This will improve=
performance for reads on these registers. ACPICA BZ 760.
Fixed the parameter validation for AcpiRead/Write. Now return AE_BAD_PARAME=
TER if the input register pointer is null, and AE_BAD_ADDRESS if the regist=
er has an address of zero. Previously, these cases simply returned AE_OK. F=
or optional registers such as PM1B status/enable/control, the caller should=
check for a valid register address before calling. ACPICA BZ 748.
Renamed the external ACPI bit register access functions. Renamed AcpiGetReg=
ister and AcpiSetRegister to clarify the purpose of these functions. The ne=
w names are AcpiReadBitRegister and AcpiWriteBitRegister. Also, restructure=
d the code for these functions by simplifying the code path and condensing =
duplicate code to reduce code size.
Added new functions to transparently handle the possibly split PM1 A/B regi=
sters. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions now =
handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 7=
46.
Added a function to handle the PM1 control registers, AcpiHwWritePm1Control=
. This function writes both of the PM1 control registers (A/B). These regis=
ters are different than the PM1 A/B status and enable registers in that dif=
ferent values can be written to the A/B registers. Most notably, the SLP_TY=
P bits can be different, as per the values returned from the _Sx predefined=
methods.
Removed an extra register write within AcpiHwClearAcpiStatus. This function=
was writing an optional PM1B status register twice. The existing call to t=
he low-level AcpiHwRegisterWrite automatically handles a possibly split PM1=
A/B register. ACPICA BZ 751.
Split out the PM1 Status registers from the FADT. Added new globals for the=
se registers (A/B), similar to the way the PM1 Enable registers are handled=
. Instead of overloading the FADT Event Register blocks. This makes the cod=
e clearer and less prone to error.
Fixed the warning message for when the platform contains too many ACPI tabl=
es for the default size of the global root table data structure. The calcul=
ation for the truncation value was incorrect.
Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this obsol=
ete macro, since it is now a simple reference to ->common.type. There were =
about 150 invocations of the macro across 41 files. ACPICA BZ 755.
Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as TY=
PE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to simpl=
y SLEEP_TYPE. ACPICA BZ 754.
Conditionally compile the AcpiSetFirmwareWakingVector64 function. This func=
tion is only needed on 64-bit host operating systems and is thus not includ=
ed for 32-bit hosts.
Debug output: print the input and result for invocations of the _OSI reserv=
ed control method via the ACPI_LV_INFO debug level. Also, reduced some of t=
he verbosity of this debug level. Len Brown.
Example Code and Data Size: These are the sizes for the OS-independent acpi=
ca.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The debug =
version of the code includes the debug output trace mechanism and has a muc=
h larger code and data size.
Previous Release:
Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
Current Release:
Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
2) iASL Compiler/Disassembler and Tools:
Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the va=
rious legal performance profiles.
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