Merge ACPICA 20120215.

1 files changed, 355 insertions, 0 deletions

diff --git a/sys/contrib/dev/acpica/components/executer/exsystem.c b/sys/contrib/dev/acpica/components/executer/exsystem.c
new file mode 100644
index 0000000..a2ee42a
--- /dev/null
+++ b/sys/contrib/dev/acpica/components/executer/exsystem.c
@@ -0,0 +1,355 @@
+
+/******************************************************************************
+ *
+ * Module Name: exsystem - Interface to OS services
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#define __EXSYSTEM_C__
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <contrib/dev/acpica/include/accommon.h>
+#include <contrib/dev/acpica/include/acinterp.h>
+
+#define _COMPONENT          ACPI_EXECUTER
+        ACPI_MODULE_NAME    ("exsystem")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemWaitSemaphore
+ *
+ * PARAMETERS:  Semaphore       - Semaphore to wait on
+ *              Timeout         - Max time to wait
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Implements a semaphore wait with a check to see if the
+ *              semaphore is available immediately.  If it is not, the
+ *              interpreter is released before waiting.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemWaitSemaphore (
+    ACPI_SEMAPHORE          Semaphore,
+    UINT16                  Timeout)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (ExSystemWaitSemaphore);
+
+
+    Status = AcpiOsWaitSemaphore (Semaphore, 1, ACPI_DO_NOT_WAIT);
+    if (ACPI_SUCCESS (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    if (Status == AE_TIME)
+    {
+        /* We must wait, so unlock the interpreter */
+
+        AcpiExRelinquishInterpreter ();
+
+        Status = AcpiOsWaitSemaphore (Semaphore, 1, Timeout);
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+            "*** Thread awake after blocking, %s\n",
+            AcpiFormatException (Status)));
+
+        /* Reacquire the interpreter */
+
+       AcpiExReacquireInterpreter ();
+    }
+
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemWaitMutex
+ *
+ * PARAMETERS:  Mutex           - Mutex to wait on
+ *              Timeout         - Max time to wait
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Implements a mutex wait with a check to see if the
+ *              mutex is available immediately.  If it is not, the
+ *              interpreter is released before waiting.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemWaitMutex (
+    ACPI_MUTEX              Mutex,
+    UINT16                  Timeout)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (ExSystemWaitMutex);
+
+
+    Status = AcpiOsAcquireMutex (Mutex, ACPI_DO_NOT_WAIT);
+    if (ACPI_SUCCESS (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    if (Status == AE_TIME)
+    {
+        /* We must wait, so unlock the interpreter */
+
+        AcpiExRelinquishInterpreter ();
+
+        Status = AcpiOsAcquireMutex (Mutex, Timeout);
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+            "*** Thread awake after blocking, %s\n",
+            AcpiFormatException (Status)));
+
+        /* Reacquire the interpreter */
+
+        AcpiExReacquireInterpreter ();
+    }
+
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemDoStall
+ *
+ * PARAMETERS:  HowLong         - The amount of time to stall,
+ *                                in microseconds
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Suspend running thread for specified amount of time.
+ *              Note: ACPI specification requires that Stall() does not
+ *              relinquish the processor, and delays longer than 100 usec
+ *              should use Sleep() instead.  We allow stalls up to 255 usec
+ *              for compatibility with other interpreters and existing BIOSs.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemDoStall (
+    UINT32                  HowLong)
+{
+    ACPI_STATUS             Status = AE_OK;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    if (HowLong > 255) /* 255 microseconds */
+    {
+        /*
+         * Longer than 255 usec, this is an error
+         *
+         * (ACPI specifies 100 usec as max, but this gives some slack in
+         * order to support existing BIOSs)
+         */
+        ACPI_ERROR ((AE_INFO, "Time parameter is too large (%u)",
+            HowLong));
+        Status = AE_AML_OPERAND_VALUE;
+    }
+    else
+    {
+        AcpiOsStall (HowLong);
+    }
+
+    return (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemDoSleep
+ *
+ * PARAMETERS:  HowLong         - The amount of time to sleep,
+ *                                in milliseconds
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Sleep the running thread for specified amount of time.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemDoSleep (
+    UINT64                  HowLong)
+{
+    ACPI_FUNCTION_ENTRY ();
+
+
+    /* Since this thread will sleep, we must release the interpreter */
+
+    AcpiExRelinquishInterpreter ();
+
+    /*
+     * For compatibility with other ACPI implementations and to prevent
+     * accidental deep sleeps, limit the sleep time to something reasonable.
+     */
+    if (HowLong > ACPI_MAX_SLEEP)
+    {
+        HowLong = ACPI_MAX_SLEEP;
+    }
+
+    AcpiOsSleep (HowLong);
+
+    /* And now we must get the interpreter again */
+
+    AcpiExReacquireInterpreter ();
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemSignalEvent
+ *
+ * PARAMETERS:  ObjDesc         - The object descriptor for this op
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Provides an access point to perform synchronization operations
+ *              within the AML.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemSignalEvent (
+    ACPI_OPERAND_OBJECT     *ObjDesc)
+{
+    ACPI_STATUS             Status = AE_OK;
+
+
+    ACPI_FUNCTION_TRACE (ExSystemSignalEvent);
+
+
+    if (ObjDesc)
+    {
+        Status = AcpiOsSignalSemaphore (ObjDesc->Event.OsSemaphore, 1);
+    }
+
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemWaitEvent
+ *
+ * PARAMETERS:  TimeDesc        - The 'time to delay' object descriptor
+ *              ObjDesc         - The object descriptor for this op
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Provides an access point to perform synchronization operations
+ *              within the AML.  This operation is a request to wait for an
+ *              event.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemWaitEvent (
+    ACPI_OPERAND_OBJECT     *TimeDesc,
+    ACPI_OPERAND_OBJECT     *ObjDesc)
+{
+    ACPI_STATUS             Status = AE_OK;
+
+
+    ACPI_FUNCTION_TRACE (ExSystemWaitEvent);
+
+
+    if (ObjDesc)
+    {
+        Status = AcpiExSystemWaitSemaphore (ObjDesc->Event.OsSemaphore,
+                    (UINT16) TimeDesc->Integer.Value);
+    }
+
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiExSystemResetEvent
+ *
+ * PARAMETERS:  ObjDesc         - The object descriptor for this op
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Reset an event to a known state.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiExSystemResetEvent (
+    ACPI_OPERAND_OBJECT     *ObjDesc)
+{
+    ACPI_STATUS             Status = AE_OK;
+    ACPI_SEMAPHORE          TempSemaphore;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    /*
+     * We are going to simply delete the existing semaphore and
+     * create a new one!
+     */
+    Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, &TempSemaphore);
+    if (ACPI_SUCCESS (Status))
+    {
+        (void) AcpiOsDeleteSemaphore (ObjDesc->Event.OsSemaphore);
+        ObjDesc->Event.OsSemaphore = TempSemaphore;
+    }
+
+    return (Status);
+}
+