Initial import of the Intel-maintained ACPI Component Architecture. This

is Intel's reference implementation of the core operating-system ACPI
support.  (This import is on the vendor branch.)

1 files changed, 303 insertions, 0 deletions

diff --git a/sys/contrib/dev/acpica/hwgpe.c b/sys/contrib/dev/acpica/hwgpe.c
new file mode 100644
index 0000000..2385116
--- /dev/null
+++ b/sys/contrib/dev/acpica/hwgpe.c
@@ -0,0 +1,303 @@
+/******************************************************************************
+ *
+ * Module Name: hwgpe - Low level GPE enable/disable/clear functions
+ *              $Revision: 22 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999, Intel Corp.  All rights
+ * reserved.
+ *
+ * 2. License
+ *
+ * 2.1. This is your license from Intel Corp. under its intellectual property
+ * rights.  You may have additional license terms from the party that provided
+ * you this software, covering your right to use that party's intellectual
+ * property rights.
+ *
+ * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
+ * copy of the source code appearing in this file ("Covered Code") an
+ * irrevocable, perpetual, worldwide license under Intel's copyrights in the
+ * base code distributed originally by Intel ("Original Intel Code") to copy,
+ * make derivatives, distribute, use and display any portion of the Covered
+ * Code in any form, with the right to sublicense such rights; and
+ *
+ * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
+ * license (with the right to sublicense), under only those claims of Intel
+ * patents that are infringed by the Original Intel Code, to make, use, sell,
+ * offer to sell, and import the Covered Code and derivative works thereof
+ * solely to the minimum extent necessary to exercise the above copyright
+ * license, and in no event shall the patent license extend to any additions
+ * to or modifications of the Original Intel Code.  No other license or right
+ * is granted directly or by implication, estoppel or otherwise;
+ *
+ * The above copyright and patent license is granted only if the following
+ * conditions are met:
+ *
+ * 3. Conditions
+ *
+ * 3.1. Redistribution of Source with Rights to Further Distribute Source.
+ * Redistribution of source code of any substantial portion of the Covered
+ * Code or modification with rights to further distribute source must include
+ * the above Copyright Notice, the above License, this list of Conditions,
+ * and the following Disclaimer and Export Compliance provision.  In addition,
+ * Licensee must cause all Covered Code to which Licensee contributes to
+ * contain a file documenting the changes Licensee made to create that Covered
+ * Code and the date of any change.  Licensee must include in that file the
+ * documentation of any changes made by any predecessor Licensee.  Licensee
+ * must include a prominent statement that the modification is derived,
+ * directly or indirectly, from Original Intel Code.
+ *
+ * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
+ * Redistribution of source code of any substantial portion of the Covered
+ * Code or modification without rights to further distribute source must
+ * include the following Disclaimer and Export Compliance provision in the
+ * documentation and/or other materials provided with distribution.  In
+ * addition, Licensee may not authorize further sublicense of source of any
+ * portion of the Covered Code, and must include terms to the effect that the
+ * license from Licensee to its licensee is limited to the intellectual
+ * property embodied in the software Licensee provides to its licensee, and
+ * not to intellectual property embodied in modifications its licensee may
+ * make.
+ *
+ * 3.3. Redistribution of Executable. Redistribution in executable form of any
+ * substantial portion of the Covered Code or modification must reproduce the
+ * above Copyright Notice, and the following Disclaimer and Export Compliance
+ * provision in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3.4. Intel retains all right, title, and interest in and to the Original
+ * Intel Code.
+ *
+ * 3.5. Neither the name Intel nor any other trademark owned or controlled by
+ * Intel shall be used in advertising or otherwise to promote the sale, use or
+ * other dealings in products derived from or relating to the Covered Code
+ * without prior written authorization from Intel.
+ *
+ * 4. Disclaimer and Export Compliance
+ *
+ * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
+ * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
+ * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
+ * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
+ * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
+ * PARTICULAR PURPOSE.
+ *
+ * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
+ * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
+ * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
+ * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
+ * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
+ * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
+ * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
+ * LIMITED REMEDY.
+ *
+ * 4.3. Licensee shall not export, either directly or indirectly, any of this
+ * software or system incorporating such software without first obtaining any
+ * required license or other approval from the U. S. Department of Commerce or
+ * any other agency or department of the United States Government.  In the
+ * event Licensee exports any such software from the United States or
+ * re-exports any such software from a foreign destination, Licensee shall
+ * ensure that the distribution and export/re-export of the software is in
+ * compliance with all laws, regulations, orders, or other restrictions of the
+ * U.S. Export Administration Regulations. Licensee agrees that neither it nor
+ * any of its subsidiaries will export/re-export any technical data, process,
+ * software, or service, directly or indirectly, to any country for which the
+ * United States government or any agency thereof requires an export license,
+ * other governmental approval, or letter of assurance, without first obtaining
+ * such license, approval or letter.
+ *
+ *****************************************************************************/
+
+#include "acpi.h"
+#include "achware.h"
+#include "acnamesp.h"
+#include "acevents.h"
+
+#define _COMPONENT          HARDWARE
+        MODULE_NAME         ("hwgpe")
+
+
+UINT8 DecodeTo8bit [8] = {1,2,4,8,16,32,64,128};
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiHwEnableGpe
+ *
+ * PARAMETERS:  GpeNumber       - The GPE
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Enable a single GPE.
+ *
+ ******************************************************************************/
+
+void
+AcpiHwEnableGpe (
+    UINT32                  GpeNumber)
+{
+    UINT8                   InByte;
+    UINT32                  RegisterIndex;
+    UINT8                   BitMask;
+
+    /*
+     * Translate GPE number to index into global registers array.
+     */
+    RegisterIndex = AcpiGbl_GpeValid[GpeNumber];
+
+    /*
+     * Figure out the bit offset for this GPE within the target register.
+     */
+    BitMask = DecodeTo8bit [MOD_8 (GpeNumber)];
+
+    /*
+     * Read the current value of the register, set the appropriate bit
+     * to enable the GPE, and write out the new register.
+     */
+    InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr);
+    AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr,
+                (UINT8)(InByte | BitMask));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiHwDisableGpe
+ *
+ * PARAMETERS:  GpeNumber       - The GPE
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Disable a single GPE.
+ *
+ ******************************************************************************/
+
+void
+AcpiHwDisableGpe (
+    UINT32                  GpeNumber)
+{
+    UINT8                   InByte;
+    UINT32                  RegisterIndex;
+    UINT8                   BitMask;
+
+    /*
+     * Translate GPE number to index into global registers array.
+     */
+    RegisterIndex = AcpiGbl_GpeValid[GpeNumber];
+
+    /*
+     * Figure out the bit offset for this GPE within the target register.
+     */
+    BitMask = DecodeTo8bit [MOD_8 (GpeNumber)];
+
+    /*
+     * Read the current value of the register, clear the appropriate bit,
+     * and write out the new register value to disable the GPE.
+     */
+    InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr);
+    AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr,
+                (UINT8)(InByte & ~BitMask));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiHwClearGpe
+ *
+ * PARAMETERS:  GpeNumber       - The GPE
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Clear a single GPE.
+ *
+ ******************************************************************************/
+
+void
+AcpiHwClearGpe (
+    UINT32                  GpeNumber)
+{
+    UINT32                  RegisterIndex;
+    UINT8                   BitMask;
+
+    /*
+     * Translate GPE number to index into global registers array.
+     */
+    RegisterIndex = AcpiGbl_GpeValid[GpeNumber];
+
+    /*
+     * Figure out the bit offset for this GPE within the target register.
+     */
+    BitMask = DecodeTo8bit [MOD_8 (GpeNumber)];
+
+    /*
+     * Write a one to the appropriate bit in the status register to
+     * clear this GPE.
+     */
+    AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr, BitMask);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiHwGetGpeStatus
+ *
+ * PARAMETERS:  GpeNumber       - The GPE
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Return the status of a single GPE.
+ *
+ ******************************************************************************/
+
+void
+AcpiHwGetGpeStatus (
+    UINT32                  GpeNumber,
+    ACPI_EVENT_STATUS       *EventStatus)
+{
+    UINT8                   InByte = 0;
+    UINT32                  RegisterIndex = 0;
+    UINT8                   BitMask = 0;
+
+    if (!EventStatus)
+    {
+        return;
+    }
+
+    (*EventStatus) = 0;
+
+    /*
+     * Translate GPE number to index into global registers array.
+     */
+    RegisterIndex = AcpiGbl_GpeValid[GpeNumber];
+
+    /*
+     * Figure out the bit offset for this GPE within the target register.
+     */
+    BitMask = DecodeTo8bit [MOD_8 (GpeNumber)];
+
+    /*
+     * Enabled?:
+     */
+    InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr);
+
+    if (BitMask & InByte)
+    {
+        (*EventStatus) |= ACPI_EVENT_FLAG_ENABLED;
+    }
+
+    /*
+     * Set?
+     */
+    InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr);
+
+    if (BitMask & InByte)
+    {
+        (*EventStatus) |= ACPI_EVENT_FLAG_SET;
+    }
+}