Re: CVS commit: src/sys/dev/acpi

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

The so-called "wakedev" code might be broken for a short while.
The reasons are listed below.

- Jukka.

On Thu, Feb 17, 2011 at 10:49:30AM +0000, Jukka Ruohonen wrote:
> Module Name:  src
> Committed By: jruoho
> Date:         Thu Feb 17 10:49:30 UTC 2011
> 
> Modified Files:
>       src/sys/dev/acpi: acpi_ec.c acpi_wakedev.c
> 
> Log Message:
> ACPICA 20101209:
> 
> Completed the major overhaul of the GPE support code that was begun in July
> 2010. Major features include: removal of _PRW execution in ACPICA (host
> executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
> changes to existing interfaces, simplification of GPE handler operation, and
> a handful of new interfaces:
> 
>     AcpiUpdateAllGpes
>     AcpiFinishGpe
>     AcpiSetupGpeForWake
>     AcpiSetGpeWakeMask
> 
> ACPICA 20100331:
> 
> Completed a major update for the GPE support in order to improve support for
> shared GPEs and to simplify both host OS and ACPICA code. Added a reference
> count mechanism to support shared GPEs that require multiple device drivers.
> Several external interfaces have changed. One external interface has been
> removed. One new external interface was added. Most of the GPE external
> interfaces now use the GPE spinlock instead of the events mutex (and the
> Flags parameter for many GPE interfaces has been removed.) See the updated
> ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael
> Wysocki. ACPICA BZ 831.
> 
> Changed:
>     AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
> Removed:
>     AcpiSetGpeType
> New:
>     AcpiSetGpe
> 
> ACPICA 20100702:
> 
> Implemented several updates to the recently added GPE reference count
> support. The model for "wake" GPEs is changing to give the host OS complete
> control of these GPEs. Eventually, the ACPICA core will not execute any _PRW
> methods, since the host already must execute them. Also, additional changes
> were made to help ensure that the reference counts are kept in proper
> synchronization with reality. Rafael J. Wysocki.
> 
> 1) Ensure that GPEs are not enabled twice during initialization.
> 2) Ensure that GPE enable masks stay in sync with the reference count.
> 3) Do not inadvertently enable GPEs when writing GPE registers.
> 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
> interface. This interface will set or clear individual GPEs for wakeup.
> 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces
> are now used for "runtime" GPEs only.
> 
> 
> To generate a diff of this commit:
> cvs rdiff -u -r1.68 -r1.69 src/sys/dev/acpi/acpi_ec.c
> cvs rdiff -u -r1.20 -r1.21 src/sys/dev/acpi/acpi_wakedev.c
> 
> Please note that diffs are not public domain; they are subject to the
> copyright notices on the relevant files.
>