| /drivers/devman/acpica/hardware/hwacpi.c |
|---|
| 0,0 → 1,278 |
| /****************************************************************************** |
| * |
| * Module Name: hwacpi - ACPI Hardware Initialization/Mode Interface |
| * |
| *****************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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. |
| * |
| *****************************************************************************/ |
| #define __HWACPI_C__ |
| #include "acpi.h" |
| #include "accommon.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwacpi") |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwSetMode |
| * |
| * PARAMETERS: Mode - SYS_MODE_ACPI or SYS_MODE_LEGACY |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Transitions the system into the requested mode. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwSetMode ( |
| UINT32 Mode) |
| { |
| ACPI_STATUS Status; |
| UINT32 Retry; |
| ACPI_FUNCTION_TRACE (HwSetMode); |
| /* |
| * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, |
| * system does not support mode transition. |
| */ |
| if (!AcpiGbl_FADT.SmiCommand) |
| { |
| ACPI_ERROR ((AE_INFO, "No SMI_CMD in FADT, mode transition failed")); |
| return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
| } |
| /* |
| * ACPI 2.0 clarified the meaning of ACPI_ENABLE and ACPI_DISABLE |
| * in FADT: If it is zero, enabling or disabling is not supported. |
| * As old systems may have used zero for mode transition, |
| * we make sure both the numbers are zero to determine these |
| * transitions are not supported. |
| */ |
| if (!AcpiGbl_FADT.AcpiEnable && !AcpiGbl_FADT.AcpiDisable) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "No ACPI mode transition supported in this system " |
| "(enable/disable both zero)")); |
| return_ACPI_STATUS (AE_OK); |
| } |
| switch (Mode) |
| { |
| case ACPI_SYS_MODE_ACPI: |
| /* BIOS should have disabled ALL fixed and GP events */ |
| Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand, |
| (UINT32) AcpiGbl_FADT.AcpiEnable, 8); |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Attempting to enable ACPI mode\n")); |
| break; |
| case ACPI_SYS_MODE_LEGACY: |
| /* |
| * BIOS should clear all fixed status bits and restore fixed event |
| * enable bits to default |
| */ |
| Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand, |
| (UINT32) AcpiGbl_FADT.AcpiDisable, 8); |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| "Attempting to enable Legacy (non-ACPI) mode\n")); |
| break; |
| default: |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Could not write ACPI mode change")); |
| return_ACPI_STATUS (Status); |
| } |
| /* |
| * Some hardware takes a LONG time to switch modes. Give them 3 sec to |
| * do so, but allow faster systems to proceed more quickly. |
| */ |
| Retry = 3000; |
| while (Retry) |
| { |
| if (AcpiHwGetMode() == Mode) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n", |
| Mode)); |
| return_ACPI_STATUS (AE_OK); |
| } |
| AcpiOsStall(1000); |
| Retry--; |
| } |
| ACPI_ERROR ((AE_INFO, "Hardware did not change modes")); |
| return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
| } |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiHwGetMode |
| * |
| * PARAMETERS: none |
| * |
| * RETURN: SYS_MODE_ACPI or SYS_MODE_LEGACY |
| * |
| * DESCRIPTION: Return current operating state of system. Determined by |
| * querying the SCI_EN bit. |
| * |
| ******************************************************************************/ |
| UINT32 |
| AcpiHwGetMode ( |
| void) |
| { |
| ACPI_STATUS Status; |
| UINT32 Value; |
| ACPI_FUNCTION_TRACE (HwGetMode); |
| /* |
| * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, |
| * system does not support mode transition. |
| */ |
| if (!AcpiGbl_FADT.SmiCommand) |
| { |
| return_UINT32 (ACPI_SYS_MODE_ACPI); |
| } |
| Status = AcpiReadBitRegister (ACPI_BITREG_SCI_ENABLE, &Value); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_UINT32 (ACPI_SYS_MODE_LEGACY); |
| } |
| if (Value) |
| { |
| return_UINT32 (ACPI_SYS_MODE_ACPI); |
| } |
| else |
| { |
| return_UINT32 (ACPI_SYS_MODE_LEGACY); |
| } |
| } |
| /drivers/devman/acpica/hardware/hwgpe.c |
|---|
| 0,0 → 1,594 |
| /****************************************************************************** |
| * |
| * Module Name: hwgpe - Low level GPE enable/disable/clear functions |
| * |
| *****************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 "accommon.h" |
| #include "acevents.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwgpe") |
| /* Local prototypes */ |
| static ACPI_STATUS |
| AcpiHwEnableWakeupGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context); |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwLowDisableGpe |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to be disabled |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable a single GPE in the enable register. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwLowDisableGpe ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo) |
| { |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; |
| ACPI_STATUS Status; |
| UINT32 EnableMask; |
| /* Get the info block for the entire GPE register */ |
| GpeRegisterInfo = GpeEventInfo->RegisterInfo; |
| if (!GpeRegisterInfo) |
| { |
| return (AE_NOT_EXIST); |
| } |
| /* Get current value of the enable register that contains this GPE */ |
| Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| /* Clear just the bit that corresponds to this GPE */ |
| ACPI_CLEAR_BIT (EnableMask, ((UINT32) 1 << |
| (GpeEventInfo->GpeNumber - GpeRegisterInfo->BaseGpeNumber))); |
| /* Write the updated enable mask */ |
| Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress); |
| return (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwWriteGpeEnableReg |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to be enabled |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must |
| * already be cleared or set in the parent register |
| * EnableForRun mask. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwWriteGpeEnableReg ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo) |
| { |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_ENTRY (); |
| /* Get the info block for the entire GPE register */ |
| GpeRegisterInfo = GpeEventInfo->RegisterInfo; |
| if (!GpeRegisterInfo) |
| { |
| return (AE_NOT_EXIST); |
| } |
| /* Write the entire GPE (runtime) enable register */ |
| Status = AcpiHwWrite (GpeRegisterInfo->EnableForRun, |
| &GpeRegisterInfo->EnableAddress); |
| return (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwClearGpe |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to be cleared |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Clear the status bit for a single GPE. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwClearGpe ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo) |
| { |
| ACPI_STATUS Status; |
| UINT8 RegisterBit; |
| ACPI_FUNCTION_ENTRY (); |
| RegisterBit = (UINT8) (1 << |
| (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber)); |
| /* |
| * Write a one to the appropriate bit in the status register to |
| * clear this GPE. |
| */ |
| Status = AcpiHwWrite (RegisterBit, |
| &GpeEventInfo->RegisterInfo->StatusAddress); |
| return (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwGetGpeStatus |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to queried |
| * EventStatus - Where the GPE status is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Return the status of a single GPE. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwGetGpeStatus ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo, |
| ACPI_EVENT_STATUS *EventStatus) |
| { |
| UINT32 InByte; |
| UINT8 RegisterBit; |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; |
| ACPI_STATUS Status; |
| ACPI_EVENT_STATUS LocalEventStatus = 0; |
| ACPI_FUNCTION_ENTRY (); |
| if (!EventStatus) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| /* Get the info block for the entire GPE register */ |
| GpeRegisterInfo = GpeEventInfo->RegisterInfo; |
| /* Get the register bitmask for this GPE */ |
| RegisterBit = (UINT8) (1 << |
| (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber)); |
| /* GPE currently enabled? (enabled for runtime?) */ |
| if (RegisterBit & GpeRegisterInfo->EnableForRun) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED; |
| } |
| /* GPE enabled for wake? */ |
| if (RegisterBit & GpeRegisterInfo->EnableForWake) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED; |
| } |
| /* GPE currently active (status bit == 1)? */ |
| Status = AcpiHwRead (&InByte, &GpeRegisterInfo->StatusAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| if (RegisterBit & InByte) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_SET; |
| } |
| /* Set return value */ |
| (*EventStatus) = LocalEventStatus; |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwDisableGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable all GPEs within a single GPE block |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwDisableGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| /* Examine each GPE Register within the block */ |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| /* Disable all GPEs in this register */ |
| Status = AcpiHwWrite (0x00, &GpeBlock->RegisterInfo[i].EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwClearGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Clear status bits for all GPEs within a single GPE block |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwClearGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| /* Examine each GPE Register within the block */ |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| /* Clear status on all GPEs in this register */ |
| Status = AcpiHwWrite (0xFF, &GpeBlock->RegisterInfo[i].StatusAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableRuntimeGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes |
| * combination wake/run GPEs. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwEnableRuntimeGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| /* NOTE: assumes that all GPEs are currently disabled */ |
| /* Examine each GPE Register within the block */ |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| if (!GpeBlock->RegisterInfo[i].EnableForRun) |
| { |
| continue; |
| } |
| /* Enable all "runtime" GPEs in this register */ |
| Status = AcpiHwWrite (GpeBlock->RegisterInfo[i].EnableForRun, |
| &GpeBlock->RegisterInfo[i].EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableWakeupGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes |
| * combination wake/run GPEs. |
| * |
| ******************************************************************************/ |
| static ACPI_STATUS |
| AcpiHwEnableWakeupGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| /* Examine each GPE Register within the block */ |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| if (!GpeBlock->RegisterInfo[i].EnableForWake) |
| { |
| continue; |
| } |
| /* Enable all "wake" GPEs in this register */ |
| Status = AcpiHwWrite (GpeBlock->RegisterInfo[i].EnableForWake, |
| &GpeBlock->RegisterInfo[i].EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwDisableAllGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable and clear all GPEs in all GPE blocks |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwDisableAllGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (HwDisableAllGpes); |
| Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL); |
| Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock, NULL); |
| return_ACPI_STATUS (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableAllRuntimeGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwEnableAllRuntimeGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (HwEnableAllRuntimeGpes); |
| Status = AcpiEvWalkGpeList (AcpiHwEnableRuntimeGpeBlock, NULL); |
| return_ACPI_STATUS (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableAllWakeupGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwEnableAllWakeupGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (HwEnableAllWakeupGpes); |
| Status = AcpiEvWalkGpeList (AcpiHwEnableWakeupGpeBlock, NULL); |
| return_ACPI_STATUS (Status); |
| } |
| /drivers/devman/acpica/hardware/hwregs.c |
|---|
| 0,0 → 1,805 |
| /******************************************************************************* |
| * |
| * Module Name: hwregs - Read/write access functions for the various ACPI |
| * control and status registers. |
| * |
| ******************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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. |
| * |
| *****************************************************************************/ |
| #define __HWREGS_C__ |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acevents.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwregs") |
| /* Local Prototypes */ |
| static ACPI_STATUS |
| AcpiHwReadMultiple ( |
| UINT32 *Value, |
| ACPI_GENERIC_ADDRESS *RegisterA, |
| ACPI_GENERIC_ADDRESS *RegisterB); |
| static ACPI_STATUS |
| AcpiHwWriteMultiple ( |
| UINT32 Value, |
| ACPI_GENERIC_ADDRESS *RegisterA, |
| ACPI_GENERIC_ADDRESS *RegisterB); |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwValidateRegister |
| * |
| * PARAMETERS: Reg - GAS register structure |
| * MaxBitWidth - Max BitWidth supported (32 or 64) |
| * Address - Pointer to where the gas->address |
| * is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Validate the contents of a GAS register. Checks the GAS |
| * pointer, Address, SpaceId, BitWidth, and BitOffset. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwValidateRegister ( |
| ACPI_GENERIC_ADDRESS *Reg, |
| UINT8 MaxBitWidth, |
| UINT64 *Address) |
| { |
| /* Must have a valid pointer to a GAS structure */ |
| if (!Reg) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| /* |
| * Copy the target address. This handles possible alignment issues. |
| * Address must not be null. A null address also indicates an optional |
| * ACPI register that is not supported, so no error message. |
| */ |
| ACPI_MOVE_64_TO_64 (Address, &Reg->Address); |
| if (!(*Address)) |
| { |
| return (AE_BAD_ADDRESS); |
| } |
| /* Validate the SpaceID */ |
| if ((Reg->SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && |
| (Reg->SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Unsupported address space: 0x%X", Reg->SpaceId)); |
| return (AE_SUPPORT); |
| } |
| /* Validate the BitWidth */ |
| if ((Reg->BitWidth != 8) && |
| (Reg->BitWidth != 16) && |
| (Reg->BitWidth != 32) && |
| (Reg->BitWidth != MaxBitWidth)) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Unsupported register bit width: 0x%X", Reg->BitWidth)); |
| return (AE_SUPPORT); |
| } |
| /* Validate the BitOffset. Just a warning for now. */ |
| if (Reg->BitOffset != 0) |
| { |
| ACPI_WARNING ((AE_INFO, |
| "Unsupported register bit offset: 0x%X", Reg->BitOffset)); |
| } |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwRead |
| * |
| * PARAMETERS: Value - Where the value is returned |
| * Reg - GAS register structure |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Read from either memory or IO space. This is a 32-bit max |
| * version of AcpiRead, used internally since the overhead of |
| * 64-bit values is not needed. |
| * |
| * LIMITATIONS: <These limitations also apply to AcpiHwWrite> |
| * BitWidth must be exactly 8, 16, or 32. |
| * SpaceID must be SystemMemory or SystemIO. |
| * BitOffset and AccessWidth are currently ignored, as there has |
| * not been a need to implement these. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwRead ( |
| UINT32 *Value, |
| ACPI_GENERIC_ADDRESS *Reg) |
| { |
| UINT64 Address; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_NAME (HwRead); |
| /* Validate contents of the GAS register */ |
| Status = AcpiHwValidateRegister (Reg, 32, &Address); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| /* Initialize entire 32-bit return value to zero */ |
| *Value = 0; |
| /* |
| * Two address spaces supported: Memory or IO. PCI_Config is |
| * not supported here because the GAS structure is insufficient |
| */ |
| if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| { |
| Status = AcpiOsReadMemory ((ACPI_PHYSICAL_ADDRESS) |
| Address, Value, Reg->BitWidth); |
| } |
| else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ |
| { |
| Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) |
| Address, Value, Reg->BitWidth); |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "Read: %8.8X width %2d from %8.8X%8.8X (%s)\n", |
| *Value, Reg->BitWidth, ACPI_FORMAT_UINT64 (Address), |
| AcpiUtGetRegionName (Reg->SpaceId))); |
| return (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwWrite |
| * |
| * PARAMETERS: Value - Value to be written |
| * Reg - GAS register structure |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write to either memory or IO space. This is a 32-bit max |
| * version of AcpiWrite, used internally since the overhead of |
| * 64-bit values is not needed. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwWrite ( |
| UINT32 Value, |
| ACPI_GENERIC_ADDRESS *Reg) |
| { |
| UINT64 Address; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_NAME (HwWrite); |
| /* Validate contents of the GAS register */ |
| Status = AcpiHwValidateRegister (Reg, 32, &Address); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| /* |
| * Two address spaces supported: Memory or IO. PCI_Config is |
| * not supported here because the GAS structure is insufficient |
| */ |
| if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| { |
| Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) |
| Address, Value, Reg->BitWidth); |
| } |
| else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ |
| { |
| Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) |
| Address, Value, Reg->BitWidth); |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n", |
| Value, Reg->BitWidth, ACPI_FORMAT_UINT64 (Address), |
| AcpiUtGetRegionName (Reg->SpaceId))); |
| return (Status); |
| } |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiHwClearAcpiStatus |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Clears all fixed and general purpose status bits |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwClearAcpiStatus ( |
| void) |
| { |
| ACPI_STATUS Status; |
| ACPI_CPU_FLAGS LockFlags = 0; |
| ACPI_FUNCTION_TRACE (HwClearAcpiStatus); |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %04X to %8.8X%8.8X\n", |
| ACPI_BITMASK_ALL_FIXED_STATUS, |
| ACPI_FORMAT_UINT64 (AcpiGbl_XPm1aStatus.Address))); |
| LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); |
| /* Clear the fixed events in PM1 A/B */ |
| Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_STATUS, |
| ACPI_BITMASK_ALL_FIXED_STATUS); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto UnlockAndExit; |
| } |
| /* Clear the GPE Bits in all GPE registers in all GPE blocks */ |
| Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock, NULL); |
| UnlockAndExit: |
| AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); |
| return_ACPI_STATUS (Status); |
| } |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiHwGetRegisterBitMask |
| * |
| * PARAMETERS: RegisterId - Index of ACPI Register to access |
| * |
| * RETURN: The bitmask to be used when accessing the register |
| * |
| * DESCRIPTION: Map RegisterId into a register bitmask. |
| * |
| ******************************************************************************/ |
| ACPI_BIT_REGISTER_INFO * |
| AcpiHwGetBitRegisterInfo ( |
| UINT32 RegisterId) |
| { |
| ACPI_FUNCTION_ENTRY (); |
| if (RegisterId > ACPI_BITREG_MAX) |
| { |
| ACPI_ERROR ((AE_INFO, "Invalid BitRegister ID: 0x%X", RegisterId)); |
| return (NULL); |
| } |
| return (&AcpiGbl_BitRegisterInfo[RegisterId]); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwWritePm1Control |
| * |
| * PARAMETERS: Pm1aControl - Value to be written to PM1A control |
| * Pm1bControl - Value to be written to PM1B control |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write the PM1 A/B control registers. These registers are |
| * different than than the PM1 A/B status and enable registers |
| * in that different values can be written to the A/B registers. |
| * Most notably, the SLP_TYP bits can be different, as per the |
| * values returned from the _Sx predefined methods. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwWritePm1Control ( |
| UINT32 Pm1aControl, |
| UINT32 Pm1bControl) |
| { |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (HwWritePm1Control); |
| Status = AcpiHwWrite (Pm1aControl, &AcpiGbl_FADT.XPm1aControlBlock); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| if (AcpiGbl_FADT.XPm1bControlBlock.Address) |
| { |
| Status = AcpiHwWrite (Pm1bControl, &AcpiGbl_FADT.XPm1bControlBlock); |
| } |
| return_ACPI_STATUS (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwRegisterRead |
| * |
| * PARAMETERS: RegisterId - ACPI Register ID |
| * ReturnValue - Where the register value is returned |
| * |
| * RETURN: Status and the value read. |
| * |
| * DESCRIPTION: Read from the specified ACPI register |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwRegisterRead ( |
| UINT32 RegisterId, |
| UINT32 *ReturnValue) |
| { |
| UINT32 Value = 0; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (HwRegisterRead); |
| switch (RegisterId) |
| { |
| case ACPI_REGISTER_PM1_STATUS: /* PM1 A/B: 16-bit access each */ |
| Status = AcpiHwReadMultiple (&Value, |
| &AcpiGbl_XPm1aStatus, |
| &AcpiGbl_XPm1bStatus); |
| break; |
| case ACPI_REGISTER_PM1_ENABLE: /* PM1 A/B: 16-bit access each */ |
| Status = AcpiHwReadMultiple (&Value, |
| &AcpiGbl_XPm1aEnable, |
| &AcpiGbl_XPm1bEnable); |
| break; |
| case ACPI_REGISTER_PM1_CONTROL: /* PM1 A/B: 16-bit access each */ |
| Status = AcpiHwReadMultiple (&Value, |
| &AcpiGbl_FADT.XPm1aControlBlock, |
| &AcpiGbl_FADT.XPm1bControlBlock); |
| /* |
| * Zero the write-only bits. From the ACPI specification, "Hardware |
| * Write-Only Bits": "Upon reads to registers with write-only bits, |
| * software masks out all write-only bits." |
| */ |
| Value &= ~ACPI_PM1_CONTROL_WRITEONLY_BITS; |
| break; |
| case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */ |
| Status = AcpiHwRead (&Value, &AcpiGbl_FADT.XPm2ControlBlock); |
| break; |
| case ACPI_REGISTER_PM_TIMER: /* 32-bit access */ |
| Status = AcpiHwRead (&Value, &AcpiGbl_FADT.XPmTimerBlock); |
| break; |
| case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */ |
| Status = AcpiHwReadPort (AcpiGbl_FADT.SmiCommand, &Value, 8); |
| break; |
| default: |
| ACPI_ERROR ((AE_INFO, "Unknown Register ID: 0x%X", |
| RegisterId)); |
| Status = AE_BAD_PARAMETER; |
| break; |
| } |
| if (ACPI_SUCCESS (Status)) |
| { |
| *ReturnValue = Value; |
| } |
| return_ACPI_STATUS (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwRegisterWrite |
| * |
| * PARAMETERS: RegisterId - ACPI Register ID |
| * Value - The value to write |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write to the specified ACPI register |
| * |
| * NOTE: In accordance with the ACPI specification, this function automatically |
| * preserves the value of the following bits, meaning that these bits cannot be |
| * changed via this interface: |
| * |
| * PM1_CONTROL[0] = SCI_EN |
| * PM1_CONTROL[9] |
| * PM1_STATUS[11] |
| * |
| * ACPI References: |
| * 1) Hardware Ignored Bits: When software writes to a register with ignored |
| * bit fields, it preserves the ignored bit fields |
| * 2) SCI_EN: OSPM always preserves this bit position |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiHwRegisterWrite ( |
| UINT32 RegisterId, |
| UINT32 Value) |
| { |
| ACPI_STATUS Status; |
| UINT32 ReadValue; |
| ACPI_FUNCTION_TRACE (HwRegisterWrite); |
| switch (RegisterId) |
| { |
| case ACPI_REGISTER_PM1_STATUS: /* PM1 A/B: 16-bit access each */ |
| /* |
| * Handle the "ignored" bit in PM1 Status. According to the ACPI |
| * specification, ignored bits are to be preserved when writing. |
| * Normally, this would mean a read/modify/write sequence. However, |
| * preserving a bit in the status register is different. Writing a |
| * one clears the status, and writing a zero preserves the status. |
| * Therefore, we must always write zero to the ignored bit. |
| * |
| * This behavior is clarified in the ACPI 4.0 specification. |
| */ |
| Value &= ~ACPI_PM1_STATUS_PRESERVED_BITS; |
| Status = AcpiHwWriteMultiple (Value, |
| &AcpiGbl_XPm1aStatus, |
| &AcpiGbl_XPm1bStatus); |
| break; |
| case ACPI_REGISTER_PM1_ENABLE: /* PM1 A/B: 16-bit access each */ |
| Status = AcpiHwWriteMultiple (Value, |
| &AcpiGbl_XPm1aEnable, |
| &AcpiGbl_XPm1bEnable); |
| break; |
| case ACPI_REGISTER_PM1_CONTROL: /* PM1 A/B: 16-bit access each */ |
| /* |
| * Perform a read first to preserve certain bits (per ACPI spec) |
| * Note: This includes SCI_EN, we never want to change this bit |
| */ |
| Status = AcpiHwReadMultiple (&ReadValue, |
| &AcpiGbl_FADT.XPm1aControlBlock, |
| &AcpiGbl_FADT.XPm1bControlBlock); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto Exit; |
| } |
| /* Insert the bits to be preserved */ |
| ACPI_INSERT_BITS (Value, ACPI_PM1_CONTROL_PRESERVED_BITS, ReadValue); |
| /* Now we can write the data */ |
| Status = AcpiHwWriteMultiple (Value, |
| &AcpiGbl_FADT.XPm1aControlBlock, |
| &AcpiGbl_FADT.XPm1bControlBlock); |
| break; |
| case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */ |
| /* |
| * For control registers, all reserved bits must be preserved, |
| * as per the ACPI spec. |
| */ |
| Status = AcpiHwRead (&ReadValue, &AcpiGbl_FADT.XPm2ControlBlock); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto Exit; |
| } |
| /* Insert the bits to be preserved */ |
| ACPI_INSERT_BITS (Value, ACPI_PM2_CONTROL_PRESERVED_BITS, ReadValue); |
| Status = AcpiHwWrite (Value, &AcpiGbl_FADT.XPm2ControlBlock); |
| break; |
| case ACPI_REGISTER_PM_TIMER: /* 32-bit access */ |
| Status = AcpiHwWrite (Value, &AcpiGbl_FADT.XPmTimerBlock); |
| break; |
| case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */ |
| /* SMI_CMD is currently always in IO space */ |
| Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand, Value, 8); |
| break; |
| default: |
| ACPI_ERROR ((AE_INFO, "Unknown Register ID: 0x%X", |
| RegisterId)); |
| Status = AE_BAD_PARAMETER; |
| break; |
| } |
| Exit: |
| return_ACPI_STATUS (Status); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwReadMultiple |
| * |
| * PARAMETERS: Value - Where the register value is returned |
| * RegisterA - First ACPI register (required) |
| * RegisterB - Second ACPI register (optional) |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Read from the specified two-part ACPI register (such as PM1 A/B) |
| * |
| ******************************************************************************/ |
| static ACPI_STATUS |
| AcpiHwReadMultiple ( |
| UINT32 *Value, |
| ACPI_GENERIC_ADDRESS *RegisterA, |
| ACPI_GENERIC_ADDRESS *RegisterB) |
| { |
| UINT32 ValueA = 0; |
| UINT32 ValueB = 0; |
| ACPI_STATUS Status; |
| /* The first register is always required */ |
| Status = AcpiHwRead (&ValueA, RegisterA); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| /* Second register is optional */ |
| if (RegisterB->Address) |
| { |
| Status = AcpiHwRead (&ValueB, RegisterB); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| /* |
| * OR the two return values together. No shifting or masking is necessary, |
| * because of how the PM1 registers are defined in the ACPI specification: |
| * |
| * "Although the bits can be split between the two register blocks (each |
| * register block has a unique pointer within the FADT), the bit positions |
| * are maintained. The register block with unimplemented bits (that is, |
| * those implemented in the other register block) always returns zeros, |
| * and writes have no side effects" |
| */ |
| *Value = (ValueA | ValueB); |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwWriteMultiple |
| * |
| * PARAMETERS: Value - The value to write |
| * RegisterA - First ACPI register (required) |
| * RegisterB - Second ACPI register (optional) |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write to the specified two-part ACPI register (such as PM1 A/B) |
| * |
| ******************************************************************************/ |
| static ACPI_STATUS |
| AcpiHwWriteMultiple ( |
| UINT32 Value, |
| ACPI_GENERIC_ADDRESS *RegisterA, |
| ACPI_GENERIC_ADDRESS *RegisterB) |
| { |
| ACPI_STATUS Status; |
| /* The first register is always required */ |
| Status = AcpiHwWrite (Value, RegisterA); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| /* |
| * Second register is optional |
| * |
| * No bit shifting or clearing is necessary, because of how the PM1 |
| * registers are defined in the ACPI specification: |
| * |
| * "Although the bits can be split between the two register blocks (each |
| * register block has a unique pointer within the FADT), the bit positions |
| * are maintained. The register block with unimplemented bits (that is, |
| * those implemented in the other register block) always returns zeros, |
| * and writes have no side effects" |
| */ |
| if (RegisterB->Address) |
| { |
| Status = AcpiHwWrite (Value, RegisterB); |
| } |
| return (Status); |
| } |
| /drivers/devman/acpica/hardware/hwsleep.c |
|---|
| 0,0 → 1,711 |
| /****************************************************************************** |
| * |
| * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface |
| * |
| *****************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 "accommon.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwsleep") |
| /******************************************************************************* |
| * |
| * 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: AcpiEnterSleepStatePrep |
| * |
| * PARAMETERS: SleepState - Which sleep state to enter |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) |
| * 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; |
| 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: |
| Arg.Integer.Value = ACPI_SST_WORKING; |
| break; |
| case ACPI_STATE_S1: |
| case ACPI_STATE_S2: |
| case ACPI_STATE_S3: |
| Arg.Integer.Value = ACPI_SST_SLEEPING; |
| break; |
| case ACPI_STATE_S4: |
| Arg.Integer.Value = ACPI_SST_SLEEP_CONTEXT; |
| break; |
| default: |
| Arg.Integer.Value = 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) |
| */ |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, "While executing method _SST")); |
| } |
| 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) |
| { |
| UINT32 Pm1aControl; |
| UINT32 Pm1bControl; |
| ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; |
| ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; |
| UINT32 InValue; |
| ACPI_OBJECT_LIST ArgList; |
| ACPI_OBJECT Arg; |
| 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); |
| } |
| SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE); |
| SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); |
| /* Clear wake status */ |
| Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| /* Clear all fixed and general purpose status bits */ |
| Status = AcpiHwClearAcpiStatus (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| if (SleepState != ACPI_STATE_S5) |
| { |
| /* |
| * Disable BM arbitration. This feature is contained within an |
| * optional register (PM2 Control), so ignore a BAD_ADDRESS |
| * exception. |
| */ |
| Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 1); |
| if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS)) |
| { |
| 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); |
| } |
| /* Execute the _GTS method (Going To Sleep) */ |
| ArgList.Count = 1; |
| ArgList.Pointer = &Arg; |
| Arg.Type = ACPI_TYPE_INTEGER; |
| Arg.Integer.Value = SleepState; |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| /* Get current value of PM1A control */ |
| Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL, |
| &Pm1aControl); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
| "Entering sleep state [S%u]\n", SleepState)); |
| /* Clear the SLP_EN and SLP_TYP fields */ |
| Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask | |
| SleepEnableRegInfo->AccessBitMask); |
| Pm1bControl = Pm1aControl; |
| /* Insert the SLP_TYP bits */ |
| Pm1aControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition); |
| Pm1bControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition); |
| /* |
| * We split the writes of SLP_TYP and SLP_EN to workaround |
| * poorly implemented hardware. |
| */ |
| /* Write #1: write the SLP_TYP data to the PM1 Control registers */ |
| Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| /* Insert the sleep enable (SLP_EN) bit */ |
| Pm1aControl |= SleepEnableRegInfo->AccessBitMask; |
| Pm1bControl |= SleepEnableRegInfo->AccessBitMask; |
| /* Flush caches, as per ACPI specification */ |
| ACPI_FLUSH_CPU_CACHE (); |
| /* Write #2: Write both SLP_TYP + SLP_EN */ |
| Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| if (SleepState > ACPI_STATE_S3) |
| { |
| /* |
| * We wanted to sleep > S3, but it didn't happen (by virtue of the |
| * fact that we are still executing!) |
| * |
| * Wait ten seconds, then try again. This is to get S4/S5 to work on |
| * all machines. |
| * |
| * We wait so long to allow chipsets that poll this reg very slowly |
| * to still read the right value. Ideally, this block would go |
| * away entirely. |
| */ |
| AcpiOsStall (10000000); |
| Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_CONTROL, |
| SleepEnableRegInfo->AccessBitMask); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| /* Wait until we enter sleep state */ |
| do |
| { |
| Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| /* Spin until we wake */ |
| } while (!InValue); |
| return_ACPI_STATUS (AE_OK); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiEnterSleepState) |
| /******************************************************************************* |
| * |
| * 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) |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiLeaveSleepState |
| * |
| * PARAMETERS: SleepState - Which sleep state we just exited |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep |
| * Called with interrupts ENABLED. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiLeaveSleepState ( |
| UINT8 SleepState) |
| { |
| ACPI_OBJECT_LIST ArgList; |
| ACPI_OBJECT Arg; |
| ACPI_STATUS Status; |
| ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; |
| ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; |
| UINT32 Pm1aControl; |
| UINT32 Pm1bControl; |
| ACPI_FUNCTION_TRACE (AcpiLeaveSleepState); |
| /* |
| * Set SLP_TYPE and SLP_EN to state S0. |
| * This is unclear from the ACPI Spec, but it is required |
| * by some machines. |
| */ |
| Status = AcpiGetSleepTypeData (ACPI_STATE_S0, |
| &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); |
| if (ACPI_SUCCESS (Status)) |
| { |
| SleepTypeRegInfo = |
| AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE); |
| SleepEnableRegInfo = |
| AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); |
| /* Get current value of PM1A control */ |
| Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL, |
| &Pm1aControl); |
| if (ACPI_SUCCESS (Status)) |
| { |
| /* Clear the SLP_EN and SLP_TYP fields */ |
| Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask | |
| SleepEnableRegInfo->AccessBitMask); |
| Pm1bControl = Pm1aControl; |
| /* Insert the SLP_TYP bits */ |
| Pm1aControl |= (AcpiGbl_SleepTypeA << |
| SleepTypeRegInfo->BitPosition); |
| Pm1bControl |= (AcpiGbl_SleepTypeB << |
| SleepTypeRegInfo->BitPosition); |
| /* Write the control registers and ignore any errors */ |
| (void) AcpiHwWritePm1Control (Pm1aControl, Pm1bControl); |
| } |
| } |
| /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */ |
| AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID; |
| /* Setup parameter object */ |
| ArgList.Count = 1; |
| ArgList.Pointer = &Arg; |
| Arg.Type = ACPI_TYPE_INTEGER; |
| /* Ignore any errors from these methods */ |
| Arg.Integer.Value = ACPI_SST_WAKING; |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST")); |
| } |
| Arg.Integer.Value = SleepState; |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__BFS, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, "During Method _BFS")); |
| } |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__WAK, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, "During Method _WAK")); |
| } |
| /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ |
| /* |
| * Restore the GPEs: |
| * 1) Disable/Clear all GPEs |
| * 2) Enable all runtime GPEs |
| */ |
| Status = AcpiHwDisableAllGpes (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| AcpiGbl_SystemAwakeAndRunning = TRUE; |
| Status = AcpiHwEnableAllRuntimeGpes (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| /* Enable power button */ |
| (void) AcpiWriteBitRegister( |
| AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].EnableRegisterId, |
| ACPI_ENABLE_EVENT); |
| (void) AcpiWriteBitRegister( |
| AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].StatusRegisterId, |
| ACPI_CLEAR_STATUS); |
| /* |
| * Enable BM arbitration. This feature is contained within an |
| * optional register (PM2 Control), so ignore a BAD_ADDRESS |
| * exception. |
| */ |
| Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 0); |
| if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| Arg.Integer.Value = ACPI_SST_WORKING; |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST")); |
| } |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState) |
| /drivers/devman/acpica/hardware/hwtimer.c |
|---|
| 0,0 → 1,288 |
| /****************************************************************************** |
| * |
| * Name: hwtimer.c - ACPI Power Management Timer Interface |
| * |
| *****************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 "accommon.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwtimer") |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiGetTimerResolution |
| * |
| * PARAMETERS: Resolution - Where the resolution is returned |
| * |
| * RETURN: Status and timer resolution |
| * |
| * DESCRIPTION: Obtains resolution of the ACPI PM Timer (24 or 32 bits). |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiGetTimerResolution ( |
| UINT32 *Resolution) |
| { |
| ACPI_FUNCTION_TRACE (AcpiGetTimerResolution); |
| if (!Resolution) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| if ((AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0) |
| { |
| *Resolution = 24; |
| } |
| else |
| { |
| *Resolution = 32; |
| } |
| return_ACPI_STATUS (AE_OK); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiGetTimerResolution) |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiGetTimer |
| * |
| * PARAMETERS: Ticks - Where the timer value is returned |
| * |
| * RETURN: Status and current timer value (ticks) |
| * |
| * DESCRIPTION: Obtains current value of ACPI PM Timer (in ticks). |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiGetTimer ( |
| UINT32 *Ticks) |
| { |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (AcpiGetTimer); |
| if (!Ticks) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| Status = AcpiHwRead (Ticks, &AcpiGbl_FADT.XPmTimerBlock); |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiGetTimer) |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiGetTimerDuration |
| * |
| * PARAMETERS: StartTicks - Starting timestamp |
| * EndTicks - End timestamp |
| * TimeElapsed - Where the elapsed time is returned |
| * |
| * RETURN: Status and TimeElapsed |
| * |
| * DESCRIPTION: Computes the time elapsed (in microseconds) between two |
| * PM Timer time stamps, taking into account the possibility of |
| * rollovers, the timer resolution, and timer frequency. |
| * |
| * The PM Timer's clock ticks at roughly 3.6 times per |
| * _microsecond_, and its clock continues through Cx state |
| * transitions (unlike many CPU timestamp counters) -- making it |
| * a versatile and accurate timer. |
| * |
| * Note that this function accommodates only a single timer |
| * rollover. Thus for 24-bit timers, this function should only |
| * be used for calculating durations less than ~4.6 seconds |
| * (~20 minutes for 32-bit timers) -- calculations below: |
| * |
| * 2**24 Ticks / 3,600,000 Ticks/Sec = 4.66 sec |
| * 2**32 Ticks / 3,600,000 Ticks/Sec = 1193 sec or 19.88 minutes |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiGetTimerDuration ( |
| UINT32 StartTicks, |
| UINT32 EndTicks, |
| UINT32 *TimeElapsed) |
| { |
| ACPI_STATUS Status; |
| UINT32 DeltaTicks; |
| UINT64 Quotient; |
| ACPI_FUNCTION_TRACE (AcpiGetTimerDuration); |
| if (!TimeElapsed) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| /* |
| * Compute Tick Delta: |
| * Handle (max one) timer rollovers on 24-bit versus 32-bit timers. |
| */ |
| if (StartTicks < EndTicks) |
| { |
| DeltaTicks = EndTicks - StartTicks; |
| } |
| else if (StartTicks > EndTicks) |
| { |
| if ((AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0) |
| { |
| /* 24-bit Timer */ |
| DeltaTicks = (((0x00FFFFFF - StartTicks) + EndTicks) & 0x00FFFFFF); |
| } |
| else |
| { |
| /* 32-bit Timer */ |
| DeltaTicks = (0xFFFFFFFF - StartTicks) + EndTicks; |
| } |
| } |
| else /* StartTicks == EndTicks */ |
| { |
| *TimeElapsed = 0; |
| return_ACPI_STATUS (AE_OK); |
| } |
| /* |
| * Compute Duration (Requires a 64-bit multiply and divide): |
| * |
| * TimeElapsed = (DeltaTicks * 1000000) / PM_TIMER_FREQUENCY; |
| */ |
| Status = AcpiUtShortDivide (((UINT64) DeltaTicks) * 1000000, |
| PM_TIMER_FREQUENCY, &Quotient, NULL); |
| *TimeElapsed = (UINT32) Quotient; |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiGetTimerDuration) |
| /drivers/devman/acpica/hardware/hwvalid.c |
|---|
| 0,0 → 1,438 |
| /****************************************************************************** |
| * |
| * Module Name: hwvalid - I/O request validation |
| * |
| *****************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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. |
| * |
| *****************************************************************************/ |
| #define __HWVALID_C__ |
| #include "acpi.h" |
| #include "accommon.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwvalid") |
| /* Local prototypes */ |
| static ACPI_STATUS |
| AcpiHwValidateIoRequest ( |
| ACPI_IO_ADDRESS Address, |
| UINT32 BitWidth); |
| /* |
| * Protected I/O ports. Some ports are always illegal, and some are |
| * conditionally illegal. This table must remain ordered by port address. |
| * |
| * The table is used to implement the Microsoft port access rules that |
| * first appeared in Windows XP. Some ports are always illegal, and some |
| * ports are only illegal if the BIOS calls _OSI with a WinXP string or |
| * later (meaning that the BIOS itelf is post-XP.) |
| * |
| * This provides ACPICA with the desired port protections and |
| * Microsoft compatibility. |
| * |
| * Description of port entries: |
| * DMA: DMA controller |
| * PIC0: Programmable Interrupt Controller (8259A) |
| * PIT1: System Timer 1 |
| * PIT2: System Timer 2 failsafe |
| * RTC: Real-time clock |
| * CMOS: Extended CMOS |
| * DMA1: DMA 1 page registers |
| * DMA1L: DMA 1 Ch 0 low page |
| * DMA2: DMA 2 page registers |
| * DMA2L: DMA 2 low page refresh |
| * ARBC: Arbitration control |
| * SETUP: Reserved system board setup |
| * POS: POS channel select |
| * PIC1: Cascaded PIC |
| * IDMA: ISA DMA |
| * ELCR: PIC edge/level registers |
| * PCI: PCI configuration space |
| */ |
| static const ACPI_PORT_INFO AcpiProtectedPorts[] = |
| { |
| {"DMA", 0x0000, 0x000F, ACPI_OSI_WIN_XP}, |
| {"PIC0", 0x0020, 0x0021, ACPI_ALWAYS_ILLEGAL}, |
| {"PIT1", 0x0040, 0x0043, ACPI_OSI_WIN_XP}, |
| {"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP}, |
| {"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP}, |
| {"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP}, |
| {"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP}, |
| {"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP}, |
| {"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP}, |
| {"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP}, |
| {"ARBC", 0x0090, 0x0091, ACPI_OSI_WIN_XP}, |
| {"SETUP", 0x0093, 0x0094, ACPI_OSI_WIN_XP}, |
| {"POS", 0x0096, 0x0097, ACPI_OSI_WIN_XP}, |
| {"PIC1", 0x00A0, 0x00A1, ACPI_ALWAYS_ILLEGAL}, |
| {"IDMA", 0x00C0, 0x00DF, ACPI_OSI_WIN_XP}, |
| {"ELCR", 0x04D0, 0x04D1, ACPI_ALWAYS_ILLEGAL}, |
| {"PCI", 0x0CF8, 0x0CFF, ACPI_OSI_WIN_XP} |
| }; |
| #define ACPI_PORT_INFO_ENTRIES ACPI_ARRAY_LENGTH (AcpiProtectedPorts) |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwValidateIoRequest |
| * |
| * PARAMETERS: Address Address of I/O port/register |
| * BitWidth Number of bits (8,16,32) |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Validates an I/O request (address/length). Certain ports are |
| * always illegal and some ports are only illegal depending on |
| * the requests the BIOS AML code makes to the predefined |
| * _OSI method. |
| * |
| ******************************************************************************/ |
| static ACPI_STATUS |
| AcpiHwValidateIoRequest ( |
| ACPI_IO_ADDRESS Address, |
| UINT32 BitWidth) |
| { |
| UINT32 i; |
| UINT32 ByteWidth; |
| ACPI_IO_ADDRESS LastAddress; |
| const ACPI_PORT_INFO *PortInfo; |
| ACPI_FUNCTION_TRACE (HwValidateIoRequest); |
| /* Supported widths are 8/16/32 */ |
| if ((BitWidth != 8) && |
| (BitWidth != 16) && |
| (BitWidth != 32)) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| PortInfo = AcpiProtectedPorts; |
| ByteWidth = ACPI_DIV_8 (BitWidth); |
| LastAddress = Address + ByteWidth - 1; |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Address %p LastAddress %p Length %X", |
| ACPI_CAST_PTR (void, Address), ACPI_CAST_PTR (void, LastAddress), |
| ByteWidth)); |
| /* Maximum 16-bit address in I/O space */ |
| if (LastAddress > ACPI_UINT16_MAX) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Illegal I/O port address/length above 64K: %p/0x%X", |
| ACPI_CAST_PTR (void, Address), ByteWidth)); |
| return_ACPI_STATUS (AE_LIMIT); |
| } |
| /* Exit if requested address is not within the protected port table */ |
| if (Address > AcpiProtectedPorts[ACPI_PORT_INFO_ENTRIES - 1].End) |
| { |
| return_ACPI_STATUS (AE_OK); |
| } |
| /* Check request against the list of protected I/O ports */ |
| for (i = 0; i < ACPI_PORT_INFO_ENTRIES; i++, PortInfo++) |
| { |
| /* |
| * Check if the requested address range will write to a reserved |
| * port. Four cases to consider: |
| * |
| * 1) Address range is contained completely in the port address range |
| * 2) Address range overlaps port range at the port range start |
| * 3) Address range overlaps port range at the port range end |
| * 4) Address range completely encompasses the port range |
| */ |
| if ((Address <= PortInfo->End) && (LastAddress >= PortInfo->Start)) |
| { |
| /* Port illegality may depend on the _OSI calls made by the BIOS */ |
| if (AcpiGbl_OsiData >= PortInfo->OsiDependency) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)", |
| ACPI_CAST_PTR (void, Address), ByteWidth, PortInfo->Name, |
| PortInfo->Start, PortInfo->End)); |
| return_ACPI_STATUS (AE_AML_ILLEGAL_ADDRESS); |
| } |
| } |
| /* Finished if address range ends before the end of this port */ |
| if (LastAddress <= PortInfo->End) |
| { |
| break; |
| } |
| } |
| return_ACPI_STATUS (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwReadPort |
| * |
| * PARAMETERS: Address Address of I/O port/register to read |
| * Value Where value is placed |
| * Width Number of bits |
| * |
| * RETURN: Status and value read from port |
| * |
| * DESCRIPTION: Read data from an I/O port or register. This is a front-end |
| * to AcpiOsReadPort that performs validation on both the port |
| * address and the length. |
| * |
| *****************************************************************************/ |
| ACPI_STATUS |
| AcpiHwReadPort ( |
| ACPI_IO_ADDRESS Address, |
| UINT32 *Value, |
| UINT32 Width) |
| { |
| ACPI_STATUS Status; |
| UINT32 OneByte; |
| UINT32 i; |
| /* Truncate address to 16 bits if requested */ |
| if (AcpiGbl_TruncateIoAddresses) |
| { |
| Address &= ACPI_UINT16_MAX; |
| } |
| /* Validate the entire request and perform the I/O */ |
| Status = AcpiHwValidateIoRequest (Address, Width); |
| if (ACPI_SUCCESS (Status)) |
| { |
| Status = AcpiOsReadPort (Address, Value, Width); |
| return (Status); |
| } |
| if (Status != AE_AML_ILLEGAL_ADDRESS) |
| { |
| return (Status); |
| } |
| /* |
| * There has been a protection violation within the request. Fall |
| * back to byte granularity port I/O and ignore the failing bytes. |
| * This provides Windows compatibility. |
| */ |
| for (i = 0, *Value = 0; i < Width; i += 8) |
| { |
| /* Validate and read one byte */ |
| if (AcpiHwValidateIoRequest (Address, 8) == AE_OK) |
| { |
| Status = AcpiOsReadPort (Address, &OneByte, 8); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| *Value |= (OneByte << i); |
| } |
| Address++; |
| } |
| return (AE_OK); |
| } |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwWritePort |
| * |
| * PARAMETERS: Address Address of I/O port/register to write |
| * Value Value to write |
| * Width Number of bits |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write data to an I/O port or register. This is a front-end |
| * to AcpiOsWritePort that performs validation on both the port |
| * address and the length. |
| * |
| *****************************************************************************/ |
| ACPI_STATUS |
| AcpiHwWritePort ( |
| ACPI_IO_ADDRESS Address, |
| UINT32 Value, |
| UINT32 Width) |
| { |
| ACPI_STATUS Status; |
| UINT32 i; |
| /* Truncate address to 16 bits if requested */ |
| if (AcpiGbl_TruncateIoAddresses) |
| { |
| Address &= ACPI_UINT16_MAX; |
| } |
| /* Validate the entire request and perform the I/O */ |
| Status = AcpiHwValidateIoRequest (Address, Width); |
| if (ACPI_SUCCESS (Status)) |
| { |
| Status = AcpiOsWritePort (Address, Value, Width); |
| return (Status); |
| } |
| if (Status != AE_AML_ILLEGAL_ADDRESS) |
| { |
| return (Status); |
| } |
| /* |
| * There has been a protection violation within the request. Fall |
| * back to byte granularity port I/O and ignore the failing bytes. |
| * This provides Windows compatibility. |
| */ |
| for (i = 0; i < Width; i += 8) |
| { |
| /* Validate and write one byte */ |
| if (AcpiHwValidateIoRequest (Address, 8) == AE_OK) |
| { |
| Status = AcpiOsWritePort (Address, (Value >> i) & 0xFF, 8); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| Address++; |
| } |
| return (AE_OK); |
| } |
| /drivers/devman/acpica/hardware/hwxface.c |
|---|
| 0,0 → 1,710 |
| /****************************************************************************** |
| * |
| * Module Name: hwxface - Public ACPICA hardware interfaces |
| * |
| *****************************************************************************/ |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 "accommon.h" |
| #include "acnamesp.h" |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwxface") |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiReset |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Set reset register in memory or IO space. Note: Does not |
| * support reset register in PCI config space, this must be |
| * handled separately. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiReset ( |
| void) |
| { |
| ACPI_GENERIC_ADDRESS *ResetReg; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE (AcpiReset); |
| ResetReg = &AcpiGbl_FADT.ResetRegister; |
| /* Check if the reset register is supported */ |
| if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || |
| !ResetReg->Address) |
| { |
| return_ACPI_STATUS (AE_NOT_EXIST); |
| } |
| if (ResetReg->SpaceId == ACPI_ADR_SPACE_SYSTEM_IO) |
| { |
| /* |
| * For I/O space, write directly to the OSL. This bypasses the port |
| * validation mechanism, which may block a valid write to the reset |
| * register. |
| */ |
| Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) ResetReg->Address, |
| AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); |
| } |
| else |
| { |
| /* Write the reset value to the reset register */ |
| Status = AcpiHwWrite (AcpiGbl_FADT.ResetValue, ResetReg); |
| } |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiReset) |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiRead |
| * |
| * PARAMETERS: Value - Where the value is returned |
| * Reg - GAS register structure |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Read from either memory or IO space. |
| * |
| * LIMITATIONS: <These limitations also apply to AcpiWrite> |
| * BitWidth must be exactly 8, 16, 32, or 64. |
| * SpaceID must be SystemMemory or SystemIO. |
| * BitOffset and AccessWidth are currently ignored, as there has |
| * not been a need to implement these. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiRead ( |
| UINT64 *ReturnValue, |
| ACPI_GENERIC_ADDRESS *Reg) |
| { |
| UINT32 Value; |
| UINT32 Width; |
| UINT64 Address; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_NAME (AcpiRead); |
| if (!ReturnValue) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| /* Validate contents of the GAS register. Allow 64-bit transfers */ |
| Status = AcpiHwValidateRegister (Reg, 64, &Address); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| Width = Reg->BitWidth; |
| if (Width == 64) |
| { |
| Width = 32; /* Break into two 32-bit transfers */ |
| } |
| /* Initialize entire 64-bit return value to zero */ |
| *ReturnValue = 0; |
| Value = 0; |
| /* |
| * Two address spaces supported: Memory or IO. PCI_Config is |
| * not supported here because the GAS structure is insufficient |
| */ |
| if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| { |
| Status = AcpiOsReadMemory ((ACPI_PHYSICAL_ADDRESS) |
| Address, &Value, Width); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| *ReturnValue = Value; |
| if (Reg->BitWidth == 64) |
| { |
| /* Read the top 32 bits */ |
| Status = AcpiOsReadMemory ((ACPI_PHYSICAL_ADDRESS) |
| (Address + 4), &Value, 32); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| *ReturnValue |= ((UINT64) Value << 32); |
| } |
| } |
| else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ |
| { |
| Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) |
| Address, &Value, Width); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| *ReturnValue = Value; |
| if (Reg->BitWidth == 64) |
| { |
| /* Read the top 32 bits */ |
| Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) |
| (Address + 4), &Value, 32); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| *ReturnValue |= ((UINT64) Value << 32); |
| } |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n", |
| ACPI_FORMAT_UINT64 (*ReturnValue), Reg->BitWidth, |
| ACPI_FORMAT_UINT64 (Address), |
| AcpiUtGetRegionName (Reg->SpaceId))); |
| return (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiRead) |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiWrite |
| * |
| * PARAMETERS: Value - Value to be written |
| * Reg - GAS register structure |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write to either memory or IO space. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiWrite ( |
| UINT64 Value, |
| ACPI_GENERIC_ADDRESS *Reg) |
| { |
| UINT32 Width; |
| UINT64 Address; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_NAME (AcpiWrite); |
| /* Validate contents of the GAS register. Allow 64-bit transfers */ |
| Status = AcpiHwValidateRegister (Reg, 64, &Address); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| Width = Reg->BitWidth; |
| if (Width == 64) |
| { |
| Width = 32; /* Break into two 32-bit transfers */ |
| } |
| /* |
| * Two address spaces supported: Memory or IO. PCI_Config is |
| * not supported here because the GAS structure is insufficient |
| */ |
| if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| { |
| Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) |
| Address, ACPI_LODWORD (Value), Width); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| if (Reg->BitWidth == 64) |
| { |
| Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) |
| (Address + 4), ACPI_HIDWORD (Value), 32); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| } |
| else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ |
| { |
| Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) |
| Address, ACPI_LODWORD (Value), Width); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| if (Reg->BitWidth == 64) |
| { |
| Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) |
| (Address + 4), ACPI_HIDWORD (Value), 32); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n", |
| ACPI_FORMAT_UINT64 (Value), Reg->BitWidth, |
| ACPI_FORMAT_UINT64 (Address), |
| AcpiUtGetRegionName (Reg->SpaceId))); |
| return (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiWrite) |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiReadBitRegister |
| * |
| * PARAMETERS: RegisterId - ID of ACPI Bit Register to access |
| * ReturnValue - Value that was read from the register, |
| * normalized to bit position zero. |
| * |
| * RETURN: Status and the value read from the specified Register. Value |
| * returned is normalized to bit0 (is shifted all the way right) |
| * |
| * DESCRIPTION: ACPI BitRegister read function. Does not acquire the HW lock. |
| * |
| * SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and |
| * PM2 Control. |
| * |
| * Note: The hardware lock is not required when reading the ACPI bit registers |
| * since almost all of them are single bit and it does not matter that |
| * the parent hardware register can be split across two physical |
| * registers. The only multi-bit field is SLP_TYP in the PM1 control |
| * register, but this field does not cross an 8-bit boundary (nor does |
| * it make much sense to actually read this field.) |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiReadBitRegister ( |
| UINT32 RegisterId, |
| UINT32 *ReturnValue) |
| { |
| ACPI_BIT_REGISTER_INFO *BitRegInfo; |
| UINT32 RegisterValue; |
| UINT32 Value; |
| ACPI_STATUS Status; |
| ACPI_FUNCTION_TRACE_U32 (AcpiReadBitRegister, RegisterId); |
| /* Get the info structure corresponding to the requested ACPI Register */ |
| BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId); |
| if (!BitRegInfo) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| /* Read the entire parent register */ |
| Status = AcpiHwRegisterRead (BitRegInfo->ParentRegister, |
| &RegisterValue); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| /* Normalize the value that was read, mask off other bits */ |
| Value = ((RegisterValue & BitRegInfo->AccessBitMask) |
| >> BitRegInfo->BitPosition); |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "BitReg %X, ParentReg %X, Actual %8.8X, ReturnValue %8.8X\n", |
| RegisterId, BitRegInfo->ParentRegister, RegisterValue, Value)); |
| *ReturnValue = Value; |
| return_ACPI_STATUS (AE_OK); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiReadBitRegister) |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiWriteBitRegister |
| * |
| * PARAMETERS: RegisterId - ID of ACPI Bit Register to access |
| * Value - Value to write to the register, in bit |
| * position zero. The bit is automaticallly |
| * shifted to the correct position. |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: ACPI Bit Register write function. Acquires the hardware lock |
| * since most operations require a read/modify/write sequence. |
| * |
| * SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and |
| * PM2 Control. |
| * |
| * Note that at this level, the fact that there may be actually two |
| * hardware registers (A and B - and B may not exist) is abstracted. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiWriteBitRegister ( |
| UINT32 RegisterId, |
| UINT32 Value) |
| { |
| ACPI_BIT_REGISTER_INFO *BitRegInfo; |
| ACPI_CPU_FLAGS LockFlags; |
| UINT32 RegisterValue; |
| ACPI_STATUS Status = AE_OK; |
| ACPI_FUNCTION_TRACE_U32 (AcpiWriteBitRegister, RegisterId); |
| /* Get the info structure corresponding to the requested ACPI Register */ |
| BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId); |
| if (!BitRegInfo) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); |
| /* |
| * At this point, we know that the parent register is one of the |
| * following: PM1 Status, PM1 Enable, PM1 Control, or PM2 Control |
| */ |
| if (BitRegInfo->ParentRegister != ACPI_REGISTER_PM1_STATUS) |
| { |
| /* |
| * 1) Case for PM1 Enable, PM1 Control, and PM2 Control |
| * |
| * Perform a register read to preserve the bits that we are not |
| * interested in |
| */ |
| Status = AcpiHwRegisterRead (BitRegInfo->ParentRegister, |
| &RegisterValue); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto UnlockAndExit; |
| } |
| /* |
| * Insert the input bit into the value that was just read |
| * and write the register |
| */ |
| ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition, |
| BitRegInfo->AccessBitMask, Value); |
| Status = AcpiHwRegisterWrite (BitRegInfo->ParentRegister, |
| RegisterValue); |
| } |
| else |
| { |
| /* |
| * 2) Case for PM1 Status |
| * |
| * The Status register is different from the rest. Clear an event |
| * by writing 1, writing 0 has no effect. So, the only relevant |
| * information is the single bit we're interested in, all others |
| * should be written as 0 so they will be left unchanged. |
| */ |
| RegisterValue = ACPI_REGISTER_PREPARE_BITS (Value, |
| BitRegInfo->BitPosition, BitRegInfo->AccessBitMask); |
| /* No need to write the register if value is all zeros */ |
| if (RegisterValue) |
| { |
| Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_STATUS, |
| RegisterValue); |
| } |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
| "BitReg %X, ParentReg %X, Value %8.8X, Actual %8.8X\n", |
| RegisterId, BitRegInfo->ParentRegister, Value, RegisterValue)); |
| UnlockAndExit: |
| AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiWriteBitRegister) |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetSleepTypeData |
| * |
| * PARAMETERS: SleepState - Numeric sleep state |
| * *SleepTypeA - Where SLP_TYPa is returned |
| * *SleepTypeB - Where SLP_TYPb is returned |
| * |
| * RETURN: Status - ACPI status |
| * |
| * DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep |
| * state. |
| * |
| ******************************************************************************/ |
| ACPI_STATUS |
| AcpiGetSleepTypeData ( |
| UINT8 SleepState, |
| UINT8 *SleepTypeA, |
| UINT8 *SleepTypeB) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_EVALUATE_INFO *Info; |
| ACPI_FUNCTION_TRACE (AcpiGetSleepTypeData); |
| /* Validate parameters */ |
| if ((SleepState > ACPI_S_STATES_MAX) || |
| !SleepTypeA || |
| !SleepTypeB) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| /* Allocate the evaluation information block */ |
| Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); |
| if (!Info) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| Info->Pathname = ACPI_CAST_PTR (char, AcpiGbl_SleepStateNames[SleepState]); |
| /* Evaluate the namespace object containing the values for this state */ |
| Status = AcpiNsEvaluate (Info); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| "%s while evaluating SleepState [%s]\n", |
| AcpiFormatException (Status), Info->Pathname)); |
| goto Cleanup; |
| } |
| /* Must have a return object */ |
| if (!Info->ReturnObject) |
| { |
| ACPI_ERROR ((AE_INFO, "No Sleep State object returned from [%s]", |
| Info->Pathname)); |
| Status = AE_NOT_EXIST; |
| } |
| /* It must be of type Package */ |
| else if (Info->ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) |
| { |
| ACPI_ERROR ((AE_INFO, "Sleep State return object is not a Package")); |
| Status = AE_AML_OPERAND_TYPE; |
| } |
| /* |
| * The package must have at least two elements. NOTE (March 2005): This |
| * goes against the current ACPI spec which defines this object as a |
| * package with one encoded DWORD element. However, existing practice |
| * by BIOS vendors seems to be to have 2 or more elements, at least |
| * one per sleep type (A/B). |
| */ |
| else if (Info->ReturnObject->Package.Count < 2) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Sleep State return package does not have at least two elements")); |
| Status = AE_AML_NO_OPERAND; |
| } |
| /* The first two elements must both be of type Integer */ |
| else if (((Info->ReturnObject->Package.Elements[0])->Common.Type |
| != ACPI_TYPE_INTEGER) || |
| ((Info->ReturnObject->Package.Elements[1])->Common.Type |
| != ACPI_TYPE_INTEGER)) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Sleep State return package elements are not both Integers " |
| "(%s, %s)", |
| AcpiUtGetObjectTypeName (Info->ReturnObject->Package.Elements[0]), |
| AcpiUtGetObjectTypeName (Info->ReturnObject->Package.Elements[1]))); |
| Status = AE_AML_OPERAND_TYPE; |
| } |
| else |
| { |
| /* Valid _Sx_ package size, type, and value */ |
| *SleepTypeA = (UINT8) |
| (Info->ReturnObject->Package.Elements[0])->Integer.Value; |
| *SleepTypeB = (UINT8) |
| (Info->ReturnObject->Package.Elements[1])->Integer.Value; |
| } |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "While evaluating SleepState [%s], bad Sleep object %p type %s", |
| Info->Pathname, Info->ReturnObject, |
| AcpiUtGetObjectTypeName (Info->ReturnObject))); |
| } |
| AcpiUtRemoveReference (Info->ReturnObject); |
| Cleanup: |
| ACPI_FREE (Info); |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_EXPORT_SYMBOL (AcpiGetSleepTypeData) |