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Diffstat (limited to 'sys/contrib/dev/acpica/hwregs.c')
| -rw-r--r-- | sys/contrib/dev/acpica/hwregs.c | 1001 |
1 files changed, 0 insertions, 1001 deletions
diff --git a/sys/contrib/dev/acpica/hwregs.c b/sys/contrib/dev/acpica/hwregs.c deleted file mode 100644 index 36cc47b..0000000 --- a/sys/contrib/dev/acpica/hwregs.c +++ /dev/null @@ -1,1001 +0,0 @@ - -/******************************************************************************* - * - * Module Name: hwregs - Read/write access functions for the various ACPI - * control and status registers. - * $Revision: 1.187 $ - * - ******************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, 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 <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acnamesp.h> -#include <contrib/dev/acpica/acevents.h> - -#define _COMPONENT ACPI_HARDWARE - ACPI_MODULE_NAME ("hwregs") - - -/******************************************************************************* - * - * FUNCTION: AcpiHwClearAcpiStatus - * - * PARAMETERS: None - * - * RETURN: None - * - * DESCRIPTION: Clears all fixed and general purpose status bits - * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED - * - ******************************************************************************/ - -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 %04X\n", - ACPI_BITMASK_ALL_FIXED_STATUS, - (UINT16) AcpiGbl_FADT.XPm1aEventBlock.Address)); - - LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); - - Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, - ACPI_BITMASK_ALL_FIXED_STATUS); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* Clear the fixed events */ - - if (AcpiGbl_FADT.XPm1bEventBlock.Address) - { - Status = AcpiHwLowLevelWrite (16, ACPI_BITMASK_ALL_FIXED_STATUS, - &AcpiGbl_FADT.XPm1bEventBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - } - - /* Clear the GPE Bits in all GPE registers in all GPE blocks */ - - Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock); - -UnlockAndExit: - AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * 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 (ACPI_GET_OBJECT_TYPE (Info->ReturnObject) != 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 ((ACPI_GET_OBJECT_TYPE (Info->ReturnObject->Package.Elements[0]) - != ACPI_TYPE_INTEGER) || - (ACPI_GET_OBJECT_TYPE (Info->ReturnObject->Package.Elements[1]) - != 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) - - -/******************************************************************************* - * - * 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: %X", RegisterId)); - return (NULL); - } - - return (&AcpiGbl_BitRegisterInfo[RegisterId]); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiGetRegister - * - * PARAMETERS: RegisterId - ID of ACPI BitRegister to access - * ReturnValue - Value that was read from the register - * - * RETURN: Status and the value read from specified Register. Value - * returned is normalized to bit0 (is shifted all the way right) - * - * DESCRIPTION: ACPI BitRegister read function. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiGetRegister ( - UINT32 RegisterId, - UINT32 *ReturnValue) -{ - UINT32 RegisterValue = 0; - ACPI_BIT_REGISTER_INFO *BitRegInfo; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiGetRegister); - - - /* Get the info structure corresponding to the requested ACPI Register */ - - BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId); - if (!BitRegInfo) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* Read from the register */ - - Status = AcpiHwRegisterRead (ACPI_MTX_LOCK, - BitRegInfo->ParentRegister, &RegisterValue); - - if (ACPI_SUCCESS (Status)) - { - /* Normalize the value that was read */ - - RegisterValue = ((RegisterValue & BitRegInfo->AccessBitMask) - >> BitRegInfo->BitPosition); - - *ReturnValue = RegisterValue; - - ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read value %8.8X register %X\n", - RegisterValue, BitRegInfo->ParentRegister)); - } - - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiGetRegister) - - -/******************************************************************************* - * - * FUNCTION: AcpiSetRegister - * - * PARAMETERS: RegisterId - ID of ACPI BitRegister to access - * Value - (only used on write) value to write to the - * Register, NOT pre-normalized to the bit pos - * - * RETURN: Status - * - * DESCRIPTION: ACPI Bit Register write function. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiSetRegister ( - UINT32 RegisterId, - UINT32 Value) -{ - UINT32 RegisterValue = 0; - ACPI_BIT_REGISTER_INFO *BitRegInfo; - ACPI_STATUS Status; - ACPI_CPU_FLAGS LockFlags; - - - ACPI_FUNCTION_TRACE_U32 (AcpiSetRegister, RegisterId); - - - /* Get the info structure corresponding to the requested ACPI Register */ - - BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId); - if (!BitRegInfo) - { - ACPI_ERROR ((AE_INFO, "Bad ACPI HW RegisterId: %X", RegisterId)); - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); - - /* Always do a register read first so we can insert the new bits */ - - Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, - BitRegInfo->ParentRegister, &RegisterValue); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* - * Decode the Register ID - * Register ID = [Register block ID] | [bit ID] - * - * Check bit ID to fine locate Register offset. - * Check Mask to determine Register offset, and then read-write. - */ - switch (BitRegInfo->ParentRegister) - { - case ACPI_REGISTER_PM1_STATUS: - - /* - * Status Registers are different from the rest. Clear by - * writing 1, and 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. - */ - Value = ACPI_REGISTER_PREPARE_BITS (Value, - BitRegInfo->BitPosition, BitRegInfo->AccessBitMask); - if (Value) - { - Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, (UINT16) Value); - RegisterValue = 0; - } - break; - - - case ACPI_REGISTER_PM1_ENABLE: - - ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition, - BitRegInfo->AccessBitMask, Value); - - Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_ENABLE, (UINT16) RegisterValue); - break; - - - case ACPI_REGISTER_PM1_CONTROL: - - /* - * Write the PM1 Control register. - * Note that at this level, the fact that there are actually TWO - * registers (A and B - and B may not exist) is abstracted. - */ - ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM1 control: Read %X\n", - RegisterValue)); - - ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition, - BitRegInfo->AccessBitMask, Value); - - Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, (UINT16) RegisterValue); - break; - - - case ACPI_REGISTER_PM2_CONTROL: - - Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM2_CONTROL, &RegisterValue); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM2 control: Read %X from %8.8X%8.8X\n", - RegisterValue, - ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XPm2ControlBlock.Address))); - - ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition, - BitRegInfo->AccessBitMask, Value); - - ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %4.4X to %8.8X%8.8X\n", - RegisterValue, - ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XPm2ControlBlock.Address))); - - Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM2_CONTROL, (UINT8) (RegisterValue)); - break; - - - default: - break; - } - - -UnlockAndExit: - - AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); - - /* Normalize the value that was read */ - - ACPI_DEBUG_EXEC (RegisterValue = - ((RegisterValue & BitRegInfo->AccessBitMask) >> - BitRegInfo->BitPosition)); - - ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Set bits: %8.8X actual %8.8X register %X\n", - Value, RegisterValue, BitRegInfo->ParentRegister)); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiSetRegister) - - -/****************************************************************************** - * - * FUNCTION: AcpiHwRegisterRead - * - * PARAMETERS: UseLock - Lock hardware? True/False - * 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 ( - BOOLEAN UseLock, - UINT32 RegisterId, - UINT32 *ReturnValue) -{ - UINT32 Value1 = 0; - UINT32 Value2 = 0; - ACPI_STATUS Status; - ACPI_CPU_FLAGS LockFlags = 0; - - - ACPI_FUNCTION_TRACE (HwRegisterRead); - - - if (ACPI_MTX_LOCK == UseLock) - { - LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); - } - - switch (RegisterId) - { - case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */ - - Status = AcpiHwLowLevelRead (16, &Value1, &AcpiGbl_FADT.XPm1aEventBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* PM1B is optional */ - - Status = AcpiHwLowLevelRead (16, &Value2, &AcpiGbl_FADT.XPm1bEventBlock); - Value1 |= Value2; - break; - - - case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access */ - - Status = AcpiHwLowLevelRead (16, &Value1, &AcpiGbl_XPm1aEnable); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* PM1B is optional */ - - Status = AcpiHwLowLevelRead (16, &Value2, &AcpiGbl_XPm1bEnable); - Value1 |= Value2; - break; - - - case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */ - - Status = AcpiHwLowLevelRead (16, &Value1, &AcpiGbl_FADT.XPm1aControlBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - Status = AcpiHwLowLevelRead (16, &Value2, &AcpiGbl_FADT.XPm1bControlBlock); - Value1 |= Value2; - break; - - - case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */ - - Status = AcpiHwLowLevelRead (8, &Value1, &AcpiGbl_FADT.XPm2ControlBlock); - break; - - - case ACPI_REGISTER_PM_TIMER: /* 32-bit access */ - - Status = AcpiHwLowLevelRead (32, &Value1, &AcpiGbl_FADT.XPmTimerBlock); - break; - - case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */ - - Status = AcpiOsReadPort (AcpiGbl_FADT.SmiCommand, &Value1, 8); - break; - - default: - ACPI_ERROR ((AE_INFO, "Unknown Register ID: %X", - RegisterId)); - Status = AE_BAD_PARAMETER; - break; - } - -UnlockAndExit: - if (ACPI_MTX_LOCK == UseLock) - { - AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); - } - - if (ACPI_SUCCESS (Status)) - { - *ReturnValue = Value1; - } - - return_ACPI_STATUS (Status); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiHwRegisterWrite - * - * PARAMETERS: UseLock - Lock hardware? True/False - * 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 ( - BOOLEAN UseLock, - UINT32 RegisterId, - UINT32 Value) -{ - ACPI_STATUS Status; - ACPI_CPU_FLAGS LockFlags = 0; - UINT32 ReadValue; - - - ACPI_FUNCTION_TRACE (HwRegisterWrite); - - - if (ACPI_MTX_LOCK == UseLock) - { - LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); - } - - switch (RegisterId) - { - case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */ - - /* Perform a read first to preserve certain bits (per ACPI spec) */ - - Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, &ReadValue); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* Insert the bits to be preserved */ - - ACPI_INSERT_BITS (Value, ACPI_PM1_STATUS_PRESERVED_BITS, ReadValue); - - /* Now we can write the data */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT.XPm1aEventBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* PM1B is optional */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT.XPm1bEventBlock); - break; - - - case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_XPm1aEnable); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* PM1B is optional */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_XPm1bEnable); - break; - - - case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */ - - /* - * Perform a read first to preserve certain bits (per ACPI spec) - * - * Note: This includes SCI_EN, we never want to change this bit - */ - Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, &ReadValue); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* Insert the bits to be preserved */ - - ACPI_INSERT_BITS (Value, ACPI_PM1_CONTROL_PRESERVED_BITS, ReadValue); - - /* Now we can write the data */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT.XPm1aControlBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT.XPm1bControlBlock); - break; - - - case ACPI_REGISTER_PM1A_CONTROL: /* 16-bit access */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT.XPm1aControlBlock); - break; - - - case ACPI_REGISTER_PM1B_CONTROL: /* 16-bit access */ - - Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT.XPm1bControlBlock); - break; - - - case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */ - - Status = AcpiHwLowLevelWrite (8, Value, &AcpiGbl_FADT.XPm2ControlBlock); - break; - - - case ACPI_REGISTER_PM_TIMER: /* 32-bit access */ - - Status = AcpiHwLowLevelWrite (32, Value, &AcpiGbl_FADT.XPmTimerBlock); - break; - - - case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */ - - /* SMI_CMD is currently always in IO space */ - - Status = AcpiOsWritePort (AcpiGbl_FADT.SmiCommand, Value, 8); - break; - - - default: - Status = AE_BAD_PARAMETER; - break; - } - -UnlockAndExit: - if (ACPI_MTX_LOCK == UseLock) - { - AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); - } - - return_ACPI_STATUS (Status); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiHwLowLevelRead - * - * PARAMETERS: Width - 8, 16, or 32 - * Value - Where the value is returned - * Reg - GAS register structure - * - * RETURN: Status - * - * DESCRIPTION: Read from either memory or IO space. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiHwLowLevelRead ( - UINT32 Width, - UINT32 *Value, - ACPI_GENERIC_ADDRESS *Reg) -{ - UINT64 Address; - ACPI_STATUS Status; - - - ACPI_FUNCTION_NAME (HwLowLevelRead); - - - /* - * Must have a valid pointer to a GAS structure, and - * a non-zero address within. However, don't return an error - * because the PM1A/B code must not fail if B isn't present. - */ - if (!Reg) - { - return (AE_OK); - } - - /* Get a local copy of the address. Handles possible alignment issues */ - - ACPI_MOVE_64_TO_64 (&Address, &Reg->Address); - if (!Address) - { - return (AE_OK); - } - *Value = 0; - - /* - * Two address spaces supported: Memory or IO. - * PCI_Config is not supported here because the GAS struct is insufficient - */ - switch (Reg->SpaceId) - { - case ACPI_ADR_SPACE_SYSTEM_MEMORY: - - Status = AcpiOsReadMemory ( - (ACPI_PHYSICAL_ADDRESS) Address, Value, Width); - break; - - - case ACPI_ADR_SPACE_SYSTEM_IO: - - Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address, Value, Width); - break; - - - default: - ACPI_ERROR ((AE_INFO, - "Unsupported address space: %X", Reg->SpaceId)); - return (AE_BAD_PARAMETER); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_IO, - "Read: %8.8X width %2d from %8.8X%8.8X (%s)\n", - *Value, Width, ACPI_FORMAT_UINT64 (Address), - AcpiUtGetRegionName (Reg->SpaceId))); - - return (Status); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiHwLowLevelWrite - * - * PARAMETERS: Width - 8, 16, or 32 - * Value - To be written - * Reg - GAS register structure - * - * RETURN: Status - * - * DESCRIPTION: Write to either memory or IO space. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiHwLowLevelWrite ( - UINT32 Width, - UINT32 Value, - ACPI_GENERIC_ADDRESS *Reg) -{ - UINT64 Address; - ACPI_STATUS Status; - - - ACPI_FUNCTION_NAME (HwLowLevelWrite); - - - /* - * Must have a valid pointer to a GAS structure, and - * a non-zero address within. However, don't return an error - * because the PM1A/B code must not fail if B isn't present. - */ - if (!Reg) - { - return (AE_OK); - } - - /* Get a local copy of the address. Handles possible alignment issues */ - - ACPI_MOVE_64_TO_64 (&Address, &Reg->Address); - if (!Address) - { - return (AE_OK); - } - - /* - * Two address spaces supported: Memory or IO. - * PCI_Config is not supported here because the GAS struct is insufficient - */ - switch (Reg->SpaceId) - { - case ACPI_ADR_SPACE_SYSTEM_MEMORY: - - Status = AcpiOsWriteMemory ( - (ACPI_PHYSICAL_ADDRESS) Address, Value, Width); - break; - - - case ACPI_ADR_SPACE_SYSTEM_IO: - - Status = AcpiOsWritePort ( - (ACPI_IO_ADDRESS) Address, Value, Width); - break; - - - default: - ACPI_ERROR ((AE_INFO, - "Unsupported address space: %X", Reg->SpaceId)); - return (AE_BAD_PARAMETER); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_IO, - "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n", - Value, Width, ACPI_FORMAT_UINT64 (Address), - AcpiUtGetRegionName (Reg->SpaceId))); - - return (Status); -} |
