Merge from head

- Merge from HEAD

Import ACPICA 20090521.

Chase ACPICA API changes (for kernel and boot loader).

Catch up with ACPI-CA 20070320 import.

Oops, untested code was included accidentally.
Fixed.

Import ACPI Dock Station support. Note that this is still very young.
Additional detach implementaions (or maybe improvement) for other
deivce drivers is required.

Reviewed by: njl, imp
MFC after:

Import ACPI Dock Station support. Note that this is still very young.
Additional detach implementaions (or maybe improvement) for other
deivce drivers is required.

Reviewed by: njl, imp
MFC after: 1 week

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Add a locking stub to call acpi_cmbat_get_bif() now that it is directly
run from the taskqueue. There should probably be a better way to do this
later, but this suffices for now.

Submitted by: yong

Add a locking stub to call acpi_cmbat_get_bif() now that it is directly
run from the taskqueue. There should probably be a better way to do this
later, but this suffices for now.

Submitted by: yongari

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Try to fix problems with periodic hangs by never directly calling _BIF.
Instead, re-evaluate _BIF only when we get a notify and use the cached
results. We also still evaluate _BIF once on boot. Als

Try to fix problems with periodic hangs by never directly calling _BIF.
Instead, re-evaluate _BIF only when we get a notify and use the cached
results. We also still evaluate _BIF once on boot. Also, optimize the
init loop a little by only querying for a particular info if it's not valid.

MFC after: 2 days

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Canonize the include of acpi.h.

Rewrite the acpi_battery interface to allow for other battery types
(i.e., smart battery) and fix various bugs found during the cleanup.

API changes:
* kernel access:
Access to individual batteries

Rewrite the acpi_battery interface to allow for other battery types
(i.e., smart battery) and fix various bugs found during the cleanup.

API changes:
* kernel access:
Access to individual batteries is now via devclass_find("battery").
Introduce new methods ACPI_BATT_GET_STATUS (for _BST-formatted data) and
ACPI_BATT_GET_INFO (for _BIF-formatted data). The helper function
acpi_battery_get_battinfo() now takes a device_t instead of a unit #
argument. If dev is NULL, this signifies all batteries.

* ioctl access:
The ACPIIO_BATT_GET_TYPE and ACPIIO_BATT_GET_BATTDESC ioctls have been
removed. Since there is now no need for a mapping between "virtual" unit
and physical unit, usermode programs can just specify the unit directly and
skip the old translation steps. In fact, acpiconf(8) was actually already
doing this and virtual unit was the same as physical unit in all cases
since there was previously only one battery type (acpi_cmbat). Additionally,
we now map the ACPIIO_BATT_GET_BIF and ACPIIO_BATT_GET_BST ioctls for all
batteries, if they provide the associated methods.

* apm compatibility device/ioctls: no change
* sysctl: no change

Since most third-party applications use the apm(4) compat interface, there
should be very few affected applications (if any).

Reviewed by: bruno
MFC after: 5 days

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Only report a critical battery level once until it's gone non-critical.
An improvement would be to check all batteries for critical state before
printing a message.

Reported by: Kevin Oberman (oberm

Only report a critical battery level once until it's gone non-critical.
An improvement would be to check all batteries for critical state before
printing a message.

Reported by: Kevin Oberman (oberman at es net)

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Catch up with AcpiOsSleep() interface change.
Catch up with some #define's renaming.
Implement AcpiOsGetTimer() as per ACPI 3.0.

Approved by: njl
MFC after: 1 week

Notify the user when the battery is critically low. In the future, we
may want to shut down here but the chance of BIOS vendors getting this
wrong is high. They're only supposed to announce this wh

Notify the user when the battery is critically low. In the future, we
may want to shut down here but the chance of BIOS vendors getting this
wrong is high. They're only supposed to announce this when all batteries
hit their critical level but past experience indicates we should be
conservative about this for now.

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Fix a deadlock on boot for some systems where reading the battery status
also generates a notify. Since we held the lock over this call, the
notify never got to run and the battery status read never

Fix a deadlock on boot for some systems where reading the battery status
also generates a notify. Since we held the lock over this call, the
notify never got to run and the battery status read never returned.
Document this also.

Tested by: Maxim Maximov <mcsi_at_mcsi.pp.ru>
Approved by: re (scottl)

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MPSAFE locking

* Serialize ops in acpi_cmbat_notify_handler(), acpi_cmbat_ioctl(),
acpi_cmbat_init_battery(), and acpi_cmbat_get_battinfo().
* Get the softc directly in acpi_cmbat_get_total_battin

MPSAFE locking

* Serialize ops in acpi_cmbat_notify_handler(), acpi_cmbat_ioctl(),
acpi_cmbat_init_battery(), and acpi_cmbat_get_battinfo().
* Get the softc directly in acpi_cmbat_get_total_battinfo() rather than
build an array of them.
* Don't queue a _BIF query after receiving a notify. Since we clear the
timespec, a _BIF query will be done in the context of the next caller.
* Add asserts to leaf functions that operate on shared data.
* Remove the bst/bif updating flags now that we hold the lock over the
full query.
* Explain various comments in more detail.

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Use ACPI_ALL_NOTIFY instead of registering handlers separately.

Some laptops report the "design-capacity" instead of the "real-capacity"
when the battery is fully charged. That breaks some of the arithmetic in
calculating the remaining capacity (ends up with more

Some laptops report the "design-capacity" instead of the "real-capacity"
when the battery is fully charged. That breaks some of the arithmetic in
calculating the remaining capacity (ends up with more than 100%).
This commit makes sure the max is 100.

Approved by: njl

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Add the ability to detach a battery. Now batteries that are detached are
also removed from the battery list.

Use the acpi_id_probe() method instead of acpi_MatchHid(), which is now
static.

Add support to ACPI to manage its own resources. Previously, resource
allocation was passed up to nexus. Now, we probe sysresource objects and
manage the resources they describe in a local rman poo

Add support to ACPI to manage its own resources. Previously, resource
allocation was passed up to nexus. Now, we probe sysresource objects and
manage the resources they describe in a local rman pool. This helps
devices which attach/detach varying resources (like the _CST object) and
module loads/unloads. The allocation/release routines now check to see if
the resource is described in a child sysresource object and if so,
allocate from the local rman. Sysresource objects add their resources to
the pool and reserve them upon boot. This means sysresources need to be
probed before other ACPI devices.

Changes include:
* Add ordering to the child device probe. The current order is: system
resource objects, embedded controllers, then everything else.
* Make acpi_MatchHid take a handle instead of a device_t arg.
* Replace acpi_{get,set}_resource with the generic equivalents.

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Add missing <sys/module.h> includes

Add MODULE_DEPEND entries so some of these drivers can eventually be
loaded separately from ACPI (i.e., embedded use).

Update to use the new package routines instead of rolling our own
macros.

Add devctl(4) notify support to ACPI. Various subsystems now notify
userland whenever events occur. See the example in devd.conf below
to see how to use it.