1 files changed, 474 insertions, 0 deletions
diff --git a/source/components/hardware/hwxfsleep.c b/source/components/hardware/hwxfsleep.c
new file mode 100644
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+++ b/source/components/hardware/hwxfsleep.c
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+/******************************************************************************
+ *
+ * Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+#include "acpi.h"
+#include "accommon.h"
+
+#define _COMPONENT          ACPI_HARDWARE
+        ACPI_MODULE_NAME    ("hwxfsleep")
+
+/* Local prototypes */
+
+static ACPI_STATUS
+AcpiHwSleepDispatch (
+    UINT8                   SleepState,
+    UINT32                  FunctionId);
+
+/*
+ * Dispatch table used to efficiently branch to the various sleep
+ * functions.
+ */
+#define ACPI_SLEEP_FUNCTION_ID          0
+#define ACPI_WAKE_PREP_FUNCTION_ID      1
+#define ACPI_WAKE_FUNCTION_ID           2
+
+/* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */
+
+static ACPI_SLEEP_FUNCTIONS         AcpiSleepDispatch[] =
+{
+    {ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacySleep),    AcpiHwExtendedSleep},
+    {ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacyWakePrep), AcpiHwExtendedWakePrep},
+    {ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacyWake),     AcpiHwExtendedWake}
+};
+
+
+/*
+ * These functions are removed for the ACPI_REDUCED_HARDWARE case:
+ *      AcpiSetFirmwareWakingVector
+ *      AcpiSetFirmwareWakingVector64
+ *      AcpiEnterSleepStateS4bios
+ */
+
+#if (!ACPI_REDUCED_HARDWARE)
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiSetFirmwareWakingVector
+ *
+ * PARAMETERS:  PhysicalAddress     - 32-bit physical address of ACPI real mode
+ *                                    entry point.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Sets the 32-bit FirmwareWakingVector field of the FACS
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiSetFirmwareWakingVector (
+    UINT32                  PhysicalAddress)
+{
+    ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector);
+
+
+    /* Set the 32-bit vector */
+
+    AcpiGbl_FACS->FirmwareWakingVector = PhysicalAddress;
+
+    /* Clear the 64-bit vector if it exists */
+
+    if ((AcpiGbl_FACS->Length > 32) && (AcpiGbl_FACS->Version >= 1))
+    {
+        AcpiGbl_FACS->XFirmwareWakingVector = 0;
+    }
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector)
+
+
+#if ACPI_MACHINE_WIDTH == 64
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiSetFirmwareWakingVector64
+ *
+ * PARAMETERS:  PhysicalAddress     - 64-bit physical address of ACPI protected
+ *                                    mode entry point.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Sets the 64-bit X_FirmwareWakingVector field of the FACS, if
+ *              it exists in the table. This function is intended for use with
+ *              64-bit host operating systems.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiSetFirmwareWakingVector64 (
+    UINT64                  PhysicalAddress)
+{
+    ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector64);
+
+
+    /* Determine if the 64-bit vector actually exists */
+
+    if ((AcpiGbl_FACS->Length <= 32) || (AcpiGbl_FACS->Version < 1))
+    {
+        return_ACPI_STATUS (AE_NOT_EXIST);
+    }
+
+    /* Clear 32-bit vector, set the 64-bit X_ vector */
+
+    AcpiGbl_FACS->FirmwareWakingVector = 0;
+    AcpiGbl_FACS->XFirmwareWakingVector = PhysicalAddress;
+    return_ACPI_STATUS (AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector64)
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEnterSleepStateS4bios
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform a S4 bios request.
+ *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEnterSleepStateS4bios (
+    void)
+{
+    UINT32                  InValue;
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios);
+
+
+    /* Clear the wake status bit (PM1) */
+
+    Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    Status = AcpiHwClearAcpiStatus ();
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /*
+     * 1) Disable/Clear all GPEs
+     * 2) Enable all wakeup GPEs
+     */
+    Status = AcpiHwDisableAllGpes ();
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+    AcpiGbl_SystemAwakeAndRunning = FALSE;
+
+    Status = AcpiHwEnableAllWakeupGpes ();
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    ACPI_FLUSH_CPU_CACHE ();
+
+    Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
+                (UINT32) AcpiGbl_FADT.S4BiosRequest, 8);
+
+    do {
+        AcpiOsStall(1000);
+        Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue);
+        if (ACPI_FAILURE (Status))
+        {
+            return_ACPI_STATUS (Status);
+        }
+    } while (!InValue);
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiEnterSleepStateS4bios)
+
+#endif /* !ACPI_REDUCED_HARDWARE */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiHwSleepDispatch
+ *
+ * PARAMETERS:  SleepState          - Which sleep state to enter/exit
+ *              FunctionId          - Sleep, WakePrep, or Wake
+ *
+ * RETURN:      Status from the invoked sleep handling function.
+ *
+ * DESCRIPTION: Dispatch a sleep/wake request to the appropriate handling
+ *              function.
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+AcpiHwSleepDispatch (
+    UINT8                   SleepState,
+    UINT32                  FunctionId)
+{
+    ACPI_STATUS             Status;
+    ACPI_SLEEP_FUNCTIONS    *SleepFunctions = &AcpiSleepDispatch[FunctionId];
+
+
+#if (!ACPI_REDUCED_HARDWARE)
+
+    /*
+     * If the Hardware Reduced flag is set (from the FADT), we must
+     * use the extended sleep registers
+     */
+    if (AcpiGbl_ReducedHardware ||
+        AcpiGbl_FADT.SleepControl.Address)
+    {
+        Status = SleepFunctions->ExtendedFunction (SleepState);
+    }
+    else
+    {
+        /* Legacy sleep */
+
+        Status = SleepFunctions->LegacyFunction (SleepState);
+    }
+
+    return (Status);
+
+#else
+    /*
+     * For the case where reduced-hardware-only code is being generated,
+     * we know that only the extended sleep registers are available
+     */
+    Status = SleepFunctions->ExtendedFunction (SleepState);
+    return (Status);
+
+#endif /* !ACPI_REDUCED_HARDWARE */
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEnterSleepStatePrep
+ *
+ * PARAMETERS:  SleepState          - Which sleep state to enter
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Prepare to enter a system sleep state.
+ *              This function must execute with interrupts enabled.
+ *              We break sleeping into 2 stages so that OSPM can handle
+ *              various OS-specific tasks between the two steps.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEnterSleepStatePrep (
+    UINT8                   SleepState)
+{
+    ACPI_STATUS             Status;
+    ACPI_OBJECT_LIST        ArgList;
+    ACPI_OBJECT             Arg;
+    UINT32                  SstValue;
+
+
+    ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep);
+
+
+    /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */
+
+    Status = AcpiGetSleepTypeData (SleepState,
+                    &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Execute the _PTS method (Prepare To Sleep) */
+
+    ArgList.Count = 1;
+    ArgList.Pointer = &Arg;
+    Arg.Type = ACPI_TYPE_INTEGER;
+    Arg.Integer.Value = SleepState;
+
+    Status = AcpiEvaluateObject (NULL, METHOD_NAME__PTS, &ArgList, NULL);
+    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Setup the argument to the _SST method (System STatus) */
+
+    switch (SleepState)
+    {
+    case ACPI_STATE_S0:
+        SstValue = ACPI_SST_WORKING;
+        break;
+
+    case ACPI_STATE_S1:
+    case ACPI_STATE_S2:
+    case ACPI_STATE_S3:
+        SstValue = ACPI_SST_SLEEPING;
+        break;
+
+    case ACPI_STATE_S4:
+        SstValue = ACPI_SST_SLEEP_CONTEXT;
+        break;
+
+    default:
+        SstValue = ACPI_SST_INDICATOR_OFF; /* Default is off */
+        break;
+    }
+
+    /*
+     * Set the system indicators to show the desired sleep state.
+     * _SST is an optional method (return no error if not found)
+     */
+    AcpiHwExecuteSleepMethod (METHOD_NAME__SST, SstValue);
+    return_ACPI_STATUS (AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiEnterSleepStatePrep)
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEnterSleepState
+ *
+ * PARAMETERS:  SleepState          - Which sleep state to enter
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enter a system sleep state
+ *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEnterSleepState (
+    UINT8                   SleepState)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (AcpiEnterSleepState);
+
+
+    if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) ||
+        (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX))
+    {
+        ACPI_ERROR ((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X",
+            AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB));
+        return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
+    }
+
+    Status = AcpiHwSleepDispatch (SleepState, ACPI_SLEEP_FUNCTION_ID);
+    return_ACPI_STATUS (Status);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiEnterSleepState)
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiLeaveSleepStatePrep
+ *
+ * PARAMETERS:  SleepState          - Which sleep state we are exiting
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
+ *              sleep. Called with interrupts DISABLED.
+ *              We break wake/resume into 2 stages so that OSPM can handle
+ *              various OS-specific tasks between the two steps.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiLeaveSleepStatePrep (
+    UINT8                   SleepState)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (AcpiLeaveSleepStatePrep);
+
+
+    Status = AcpiHwSleepDispatch (SleepState, ACPI_WAKE_PREP_FUNCTION_ID);
+    return_ACPI_STATUS (Status);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiLeaveSleepStatePrep)
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiLeaveSleepState
+ *
+ * PARAMETERS:  SleepState          - Which sleep state we are exiting
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
+ *              Called with interrupts ENABLED.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiLeaveSleepState (
+    UINT8                   SleepState)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (AcpiLeaveSleepState);
+
+
+    Status = AcpiHwSleepDispatch (SleepState, ACPI_WAKE_FUNCTION_ID);
+    return_ACPI_STATUS (Status);
+}
+
+ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState)