Disable the EC GPE in the shutdown path. This is correct but is not known
to fix any bug.

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

While booting, use DELAY() for waiting for the EC to respond instead of
msleep(). Until we're finally up, msleep is a no-op.

Explained by: peter

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

Changes to implement 20040514:

* Add calls to AcpiSetGpeType. We use wake/run as the type for lid and
button switches since wake-only causes Thinkpads to immediately wake on
the second suspend. No

Changes to implement 20040514:

* Add calls to AcpiSetGpeType. We use wake/run as the type for lid and
button switches since wake-only causes Thinkpads to immediately wake on
the second suspend. Note that with wake/run, some systems return both
wake and device-specific notifies so we don't register for system notifies
for lid and button switches.
* Remove the hw.acpi.osi_method tunable since it is not needed.
* Always print unknown notifies for all types.
* Add more cleanup for the EC if it fails to attach.
* Use the GPE handle now that we parse it. This allows GPEs to be defined
in AML GPE blocks.
* Always use ACPI_NOT_ISR since it's ok to acquire a mutex in our thread
which processes queued requests.

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Add support for GPE being a package of { reference, gpe bit }.
Rework the ECDT probe to pass all the parameters in a temporary struct.
Note why we are mostly ok evaluating _GLK so early.

Add support for retrieving _GLK in the ECDT probe. Now we no longer always
use the global lock at the beginning of the ECDT probe. Instead, we use
the handle from the ECDT to call _GLK. Also, unif

Add support for retrieving _GLK in the ECDT probe. Now we no longer always
use the global lock at the beginning of the ECDT probe. Instead, we use
the handle from the ECDT to call _GLK. Also, unify the device description.

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Update the name for edge triggered for the 20040402 import.

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

Convert callers to the new bus_alloc_resource_any(9) API.

Submitted by: Mark Santcroos <marks@ripe.net>
Reviewed by: imp, dfr, bde

Fix an off-by-one error and rework our EC space handler. Writing to address
0xFF would fail previously as AE_BAD_PARAMETER. It's unknown if this caused
any actual problems.

Change to acpi_{Get,Set}Integer to provide both methods. Convert all
callers to the new API.

Submitted by: Mark Santcroos <marks@ripe.net>

Delete the region we are passed if that is the requested operation.
This should fix the problem with removing an address space handler
although we don't currently use that capability so it's unlikely

Delete the region we are passed if that is the requested operation.
This should fix the problem with removing an address space handler
although we don't currently use that capability so it's unlikely anyone
saw this problem.

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Consistently print attach messages.

Bump the EC timeout from 50 to 100 ms. I believe the underlying issue is
global lock contention as symptoms only appear under heavy load (i.e. the
nightly periodic run).

Use __FBSDID().
Also some minor style cleanups.

Add and document the hw.acpi.ec.poll_timeout tunable.

Add an informational debugging printf of the maximum time spent in
EcEventWait(). If you get AE_HARDWARE_NO_RESPONSE errors, please enable
this info by setting hw.acpi.verbose=1 in loader.conf.

Do not call acpi_MatchHid() for all probe cases since it accesses the
namespace. To compensate for it only being used in the !ECDT case, use
a more robust approach to indicate a device was probed vi

Do not call acpi_MatchHid() for all probe cases since it accesses the
namespace. To compensate for it only being used in the !ECDT case, use
a more robust approach to indicate a device was probed via ECDT by setting
the private ivar to be &acpi_ec_devclass. Without the acpi_MatchHid() call
now, it might have been possible for a non-EC device to have had its magic
match our previous flag.

Pointed out by: takawata

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Close a race condition by passing status retrieved via a non-SCI call
to EcGpeQueryHandler on to any waiting threads through the softc. Similar
behavior was in the original version.

Also:
* Merge E

Close a race condition by passing status retrieved via a non-SCI call
to EcGpeQueryHandler on to any waiting threads through the softc. Similar
behavior was in the original version.

Also:
* Merge EcQuery into EcGpeQueryHandler to simplify locking
* Hold EcLock from the initial read of the CSR down to the wakeup or
until after the query command has been processed.
* ec_gpebit only needs to be a UINT8

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Add ECDT (ACPI 2.0) support. This allows the EC to be enabled before the
namespace has been evaluated. Machines with ACPI 2.0 expect this behavior
and have AML which calls EC functions early in the

Add ECDT (ACPI 2.0) support. This allows the EC to be enabled before the
namespace has been evaluated. Machines with ACPI 2.0 expect this behavior
and have AML which calls EC functions early in the boot process. If the
ECDT is not available, fall back to original probe behavior.

Other minor changes:
* Add GPE bit and GLK usage to the device announcement
* Always use the global lock in the ECDT case, but potentially downgrade to
not using it if _GLK is 0 once the namespace is available. This is
announced with "Changing GLK from 1 to 0"
* Remove the acpi_object_list definitions which were earlier deprecated

Ideas from: takawata

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Change the msleep part of EcWaitEvent to be a separate loop, fixing a
problem that for some very slow ECs (~6 ms occasionally) causes a
timeout. Also finish resource cleanup in the error case in att

Change the msleep part of EcWaitEvent to be a separate loop, fixing a
problem that for some very slow ECs (~6 ms occasionally) causes a
timeout. Also finish resource cleanup in the error case in attach.

Tested by: ume

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Update code to work with 0619 dist

* Use ACPI_BUFFER as the type for AcpiGetObjectInfo
* Remove AcpiEnableEvent/AcpiClearEvent for ACPI_EVENT_FIXED (power/sleep
buttons) as they are no longer need

Update code to work with 0619 dist

* Use ACPI_BUFFER as the type for AcpiGetObjectInfo
* Remove AcpiEnableEvent/AcpiClearEvent for ACPI_EVENT_FIXED (power/sleep
buttons) as they are no longer needed
* Change calls to use the new GPE functions
* Add AcpiOs*Lock functions

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Rewrite much of the embedded controller driver.
* Always use polled mode. The intr approach did not work for many
controllers and required the hw.acpi.ec.event_driven workaround.
* Only use an edg

Rewrite much of the embedded controller driver.
* Always use polled mode. The intr approach did not work for many
controllers and required the hw.acpi.ec.event_driven workaround.
* Only use an edge (not level) triggered GPE handler
* Add sc->ec_mtx for locking operations to a single EC. There were
many race conditions earlier between an SCI event and EcRead/Write.
* Use 1 ms as the global lock timeout
* Only acquire global lock if _GLK != 0
* Update EcWaitEvent to use an incremental backoff delay in its
poll loop. Wait 50 ms max instead of 10. Most ECs respond
in < 5 us (50 us when heavily loaded). However, some time out
occasionally even with a 10 ms timeout. For delays past 1 ms, use
msleep instead of DELAY to give SCI interrupts a chance to occur.
* Add EcCommand to send a command and wait for the appropriate event.
* The hw.acpi.ec.event_driven tunable is no longer applicable and
has been removed.

Ideas from: Linux

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