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History log of /src/sys/dev/acpi/TODO
RevisionDateAuthorComments
 1.13  23-Jun-2011  jruoho Note some long-term difficult goals.
 1.12  08-Aug-2010  jruoho Merge P-state support for acpicpu(4).

Remarks:

1. All processors (x86 or not) for which the vendor has implemented
ACPI I/O access routines are supported. Native instructions are
currently supported only for Intel's "Enhanced Speedstep". Code for
"PowerNow!" (AMD) will be merged later. Native support for VIA's
"PowerSaver" will be investigated.

2. Backwards compatibility with existing userland code is maintained.
Comparable to the case with cpu_idle(9), the ACPI CPU driver
installs alternative functions for the existing sysctl(8) controls.
The "native" behavior (if any) is restored upon detachment.

3. The dynamic nature of ACPI-provided P-states needs more investigation.
The maximum frequency induced (but not forced) by the firmware may
change dynamically. Currently, the sysctl(8) controls error out with
a value larger than the dynamic maximum. The code itself does not
however yet react to the notifications from the firmware by changing
the frequencies in-place. Presumably the system administrator should
be able to choose whether to use dynamic or static frequencies.
 1.11  21-Dec-2005  sekiya branches: 1.11.74; 1.11.96; 1.11.98;
I fixed the cardbus bus enumeration problem awhile back, but the interrupt
fixup problems remain. Adjust TODO comments to match, and add a link to
cube's comments.
 1.10  09-Jun-2004  kochi branches: 1.10.2; 1.10.14;
The "implicit return" problem is already fixed since when I imported
ACPICA_PEDANTIC changes from FreeBSD.
Added one item (processor driver).
 1.9  07-Jun-2004  kochi Remove the first one (split _REG initialization path into two phases;
which has been done since post-20031203 version of ACPI-CA).
Pointed out by mycroft.
 1.8  05-Jun-2004  mycroft Remove a couple of items that are done now. XXX Is the first one also done?
 1.7  30-Mar-2004  wiz Fix date in previous (shouldn't the entry just be removed?).
 1.6  30-Mar-2004  kochi ECDT support is complete.
 1.5  03-Nov-2003  mycroft Remove acpiec locking from the list.
 1.4  03-Nov-2003  mycroft Add another item, and some comments on particular machines affected.
 1.3  02-Nov-2003  mycroft Add another one.
 1.2  01-Nov-2003  mycroft Dropped a word...
 1.1  01-Nov-2003  mycroft A small list of things needed here.
 1.10.14.1  21-Jun-2006  yamt sync with head.
 1.10.2.2  03-Aug-2004  skrll Sync with HEAD
 1.10.2.1  09-Jun-2004  skrll file TODO was added on branch ktrace-lwp on 2004-08-03 10:45:03 +0000
 1.11.98.1  05-Mar-2011  rmind sync with head
 1.11.96.1  17-Aug-2010  uebayasi Sync with HEAD.
 1.11.74.1  11-Aug-2010  yamt sync with head.

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