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Diffstat (limited to 'sys/contrib/dev/acpica/hwregs.c')
| -rw-r--r-- | sys/contrib/dev/acpica/hwregs.c | 825 |
1 files changed, 0 insertions, 825 deletions
diff --git a/sys/contrib/dev/acpica/hwregs.c b/sys/contrib/dev/acpica/hwregs.c deleted file mode 100644 index dab453356603..000000000000 --- a/sys/contrib/dev/acpica/hwregs.c +++ /dev/null @@ -1,825 +0,0 @@ - -/******************************************************************************* - * - * Module Name: hwregs - Read/write access functions for the various ACPI - * control and status registers. - * $Revision: 71 $ - * - ******************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999, Intel Corp. All rights - * reserved. - * - * 2. License - * - * 2.1. This is your license from Intel Corp. under its intellectual property - * rights. You may have additional license terms from the party that provided - * you this software, covering your right to use that party's intellectual - * property rights. - * - * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a - * copy of the source code appearing in this file ("Covered Code") an - * irrevocable, perpetual, worldwide license under Intel's copyrights in the - * base code distributed originally by Intel ("Original Intel Code") to copy, - * make derivatives, distribute, use and display any portion of the Covered - * Code in any form, with the right to sublicense such rights; and - * - * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent - * license (with the right to sublicense), under only those claims of Intel - * patents that are infringed by the Original Intel Code, to make, use, sell, - * offer to sell, and import the Covered Code and derivative works thereof - * solely to the minimum extent necessary to exercise the above copyright - * license, and in no event shall the patent license extend to any additions - * to or modifications of the Original Intel Code. No other license or right - * is granted directly or by implication, estoppel or otherwise; - * - * The above copyright and patent license is granted only if the following - * conditions are met: - * - * 3. Conditions - * - * 3.1. Redistribution of Source with Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification with rights to further distribute source must include - * the above Copyright Notice, the above License, this list of Conditions, - * and the following Disclaimer and Export Compliance provision. In addition, - * Licensee must cause all Covered Code to which Licensee contributes to - * contain a file documenting the changes Licensee made to create that Covered - * Code and the date of any change. Licensee must include in that file the - * documentation of any changes made by any predecessor Licensee. Licensee - * must include a prominent statement that the modification is derived, - * directly or indirectly, from Original Intel Code. - * - * 3.2. Redistribution of Source with no Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification without rights to further distribute source must - * include the following Disclaimer and Export Compliance provision in the - * documentation and/or other materials provided with distribution. In - * addition, Licensee may not authorize further sublicense of source of any - * portion of the Covered Code, and must include terms to the effect that the - * license from Licensee to its licensee is limited to the intellectual - * property embodied in the software Licensee provides to its licensee, and - * not to intellectual property embodied in modifications its licensee may - * make. - * - * 3.3. Redistribution of Executable. Redistribution in executable form of any - * substantial portion of the Covered Code or modification must reproduce the - * above Copyright Notice, and the following Disclaimer and Export Compliance - * provision in the documentation and/or other materials provided with the - * distribution. - * - * 3.4. Intel retains all right, title, and interest in and to the Original - * Intel Code. - * - * 3.5. Neither the name Intel nor any other trademark owned or controlled by - * Intel shall be used in advertising or otherwise to promote the sale, use or - * other dealings in products derived from or relating to the Covered Code - * without prior written authorization from Intel. - * - * 4. Disclaimer and Export Compliance - * - * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED - * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE - * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, - * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY - * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY - * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A - * PARTICULAR PURPOSE. - * - * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES - * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR - * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, - * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY - * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL - * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS - * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY - * LIMITED REMEDY. - * - * 4.3. Licensee shall not export, either directly or indirectly, any of this - * software or system incorporating such software without first obtaining any - * required license or other approval from the U. S. Department of Commerce or - * any other agency or department of the United States Government. In the - * event Licensee exports any such software from the United States or - * re-exports any such software from a foreign destination, Licensee shall - * ensure that the distribution and export/re-export of the software is in - * compliance with all laws, regulations, orders, or other restrictions of the - * U.S. Export Administration Regulations. Licensee agrees that neither it nor - * any of its subsidiaries will export/re-export any technical data, process, - * software, or service, directly or indirectly, to any country for which the - * United States government or any agency thereof requires an export license, - * other governmental approval, or letter of assurance, without first obtaining - * such license, approval or letter. - * - *****************************************************************************/ - -#define __HWREGS_C__ - -#include "acpi.h" -#include "achware.h" -#include "acnamesp.h" - -#define _COMPONENT HARDWARE - MODULE_NAME ("hwregs") - - -/* This matches the #defines in actypes.h. */ - -NATIVE_CHAR *SleepStateTable[] = {"\\_S0_","\\_S1_","\\_S2_","\\_S3_", - "\\_S4_","\\_S4B","\\_S5_"}; - - -/******************************************************************************* - * - * FUNCTION: AcpiHwGetBitShift - * - * PARAMETERS: Mask - Input mask to determine bit shift from. - * Must have at least 1 bit set. - * - * RETURN: Bit location of the lsb of the mask - * - * DESCRIPTION: Returns the bit number for the low order bit that's set. - * - ******************************************************************************/ - -UINT32 -AcpiHwGetBitShift ( - UINT32 Mask) -{ - UINT32 Shift; - - - FUNCTION_TRACE ("HwGetBitShift"); - - - for (Shift = 0; ((Mask >> Shift) & 1) == 0; Shift++) - { ; } - - return_VALUE (Shift); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiHwClearAcpiStatus - * - * PARAMETERS: none - * - * RETURN: none - * - * DESCRIPTION: Clears all fixed and general purpose status bits - * - ******************************************************************************/ - -void -AcpiHwClearAcpiStatus (void) -{ - UINT16 GpeLength; - UINT16 Index; - - - FUNCTION_TRACE ("HwClearAcpiStatus"); - - - DEBUG_PRINT (TRACE_IO, ("About to write %04X to %04X\n", - ALL_FIXED_STS_BITS, (UINT16) AcpiGbl_FACP->Pm1aEvtBlk)); - - - AcpiCmAcquireMutex (ACPI_MTX_HARDWARE); - - AcpiOsOut16 (AcpiGbl_FACP->Pm1aEvtBlk, (UINT16) ALL_FIXED_STS_BITS); - - if (AcpiGbl_FACP->Pm1bEvtBlk) - { - AcpiOsOut16 ((UINT16) AcpiGbl_FACP->Pm1bEvtBlk, - (UINT16) ALL_FIXED_STS_BITS); - } - - /* now clear the GPE Bits */ - - if (AcpiGbl_FACP->Gpe0BlkLen) - { - GpeLength = (UINT16) DIV_2 (AcpiGbl_FACP->Gpe0BlkLen); - - for (Index = 0; Index < GpeLength; Index++) - { - AcpiOsOut8 ((AcpiGbl_FACP->Gpe0Blk + Index), (UINT8) 0xff); - } - } - - if (AcpiGbl_FACP->Gpe1BlkLen) - { - GpeLength = (UINT16) DIV_2 (AcpiGbl_FACP->Gpe1BlkLen); - - for (Index = 0; Index < GpeLength; Index++) - { - AcpiOsOut8 ((AcpiGbl_FACP->Gpe1Blk + Index), (UINT8) 0xff); - } - } - - AcpiCmReleaseMutex (ACPI_MTX_HARDWARE); - return_VOID; -} - - -/******************************************************************************* - * - * FUNCTION: AcpiHwObtainSleepTypeRegisterData - * - * PARAMETERS: SleepState - Numeric state requested - * *Slp_TypA - Pointer to byte to receive SLP_TYPa value - * *Slp_TypB - Pointer to byte to receive SLP_TYPb value - * - * RETURN: Status - ACPI status - * - * DESCRIPTION: AcpiHwObtainSleepTypeRegisterData() obtains the SLP_TYP and - * SLP_TYPb values for the sleep state requested. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiHwObtainSleepTypeRegisterData ( - UINT8 SleepState, - UINT8 *Slp_TypA, - UINT8 *Slp_TypB) -{ - ACPI_STATUS Status = AE_OK; - ACPI_OPERAND_OBJECT *ObjDesc; - - - FUNCTION_TRACE ("HwObtainSleepTypeRegisterData"); - - - /* - * Validate parameters - */ - - if ((SleepState > ACPI_S_STATES_MAX) || - !Slp_TypA || !Slp_TypB) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* - * AcpiEvaluate the namespace object containing the values for this state - */ - - Status = AcpiNsEvaluateByName (SleepStateTable[SleepState], NULL, &ObjDesc); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - if (!ObjDesc) - { - REPORT_ERROR (("Missing Sleep State object\n")); - return_ACPI_STATUS (AE_NOT_EXIST); - } - - /* - * We got something, now ensure it is correct. The object must - * be a package and must have at least 2 numeric values as the - * two elements - */ - - Status = AcpiCmResolvePackageReferences(ObjDesc); - - if (ObjDesc->Package.Count < 2) - { - /* Must have at least two elements */ - - REPORT_ERROR (("Sleep State package does not have at least two elements\n")); - Status = AE_ERROR; - } - - else if (((ObjDesc->Package.Elements[0])->Common.Type != - ACPI_TYPE_NUMBER) || - ((ObjDesc->Package.Elements[1])->Common.Type != - ACPI_TYPE_NUMBER)) - { - /* Must have two */ - - REPORT_ERROR (("Sleep State package elements are not both of type Number\n")); - Status = AE_ERROR; - } - - else - { - /* - * Valid _Sx_ package size, type, and value - */ - *Slp_TypA = (UINT8) (ObjDesc->Package.Elements[0])->Number.Value; - - *Slp_TypB = (UINT8) (ObjDesc->Package.Elements[1])->Number.Value; - } - - - if (ACPI_FAILURE (Status)) - { - DEBUG_PRINT (ACPI_ERROR, - ("SleepTypeRegisterData: Bad Sleep object %p type %X\n", - ObjDesc, ObjDesc->Common.Type)); - } - - AcpiCmRemoveReference (ObjDesc); - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiHwRegisterAccess - * - * PARAMETERS: ReadWrite - Either ACPI_READ or ACPI_WRITE. - * UseLock - Lock the hardware - * RegisterId - index of ACPI register to access - * Value - (only used on write) value to write to the - * register. Shifted all the way right. - * - * RETURN: Value written to or read from specified register. This value - * is shifted all the way right. - * - * DESCRIPTION: Generic ACPI register read/write function. - * - ******************************************************************************/ - -UINT32 -AcpiHwRegisterAccess ( - NATIVE_UINT ReadWrite, - BOOLEAN UseLock, - UINT32 RegisterId, - ...) /* Value (only used on write) */ -{ - UINT32 RegisterValue = 0; - UINT32 Mask = 0; - UINT32 Value = 0; - ACPI_IO_ADDRESS GpeReg = 0; - - - FUNCTION_TRACE ("HwRegisterIO"); - - - if (ReadWrite == ACPI_WRITE) - { - va_list marker; - - va_start (marker, RegisterId); - Value = va_arg (marker, UINT32); - va_end (marker); - } - - /* - * TBD: [Restructure] May want to split the AcpiEvent code and the - * Control code - */ - - /* - * Decode the Register ID - */ - - switch (RegisterId & REGISTER_BLOCK_MASK) - { - case PM1_EVT: - - if (RegisterId < TMR_EN) - { - /* status register */ - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmAcquireMutex (ACPI_MTX_HARDWARE); - } - - - RegisterValue = (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm1aEvtBlk); - DEBUG_PRINT (TRACE_IO, ("PM1a status: Read 0x%X from 0x%X\n", - RegisterValue, AcpiGbl_FACP->Pm1aEvtBlk)); - - if (AcpiGbl_FACP->Pm1bEvtBlk) - { - RegisterValue |= (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm1bEvtBlk); - DEBUG_PRINT (TRACE_IO, ("PM1b status: Read 0x%X from 0x%X\n", - RegisterValue, AcpiGbl_FACP->Pm1bEvtBlk)); - } - - switch (RegisterId) - { - case TMR_STS: - Mask = TMR_STS_MASK; - break; - - case BM_STS: - Mask = BM_STS_MASK; - break; - - case GBL_STS: - Mask = GBL_STS_MASK; - break; - - case PWRBTN_STS: - Mask = PWRBTN_STS_MASK; - break; - - case SLPBTN_STS: - Mask = SLPBTN_STS_MASK; - break; - - case RTC_STS: - Mask = RTC_STS_MASK; - break; - - case WAK_STS: - Mask = WAK_STS_MASK; - break; - - default: - Mask = 0; - break; - } - - if (ReadWrite == ACPI_WRITE) - { - /* - * Status registers are different from the rest. Clear by - * writing 1, writing 0 has no effect. So, the only relevent - * information is the single bit we're interested in, all - * others should be written as 0 so they will be left - * unchanged - */ - - Value <<= AcpiHwGetBitShift (Mask); - Value &= Mask; - - if (Value) - { - DEBUG_PRINT (TRACE_IO, - ("About to write 0x%X to 0x%X\n", Value, - AcpiGbl_FACP->Pm1aEvtBlk)); - - AcpiOsOut16 (AcpiGbl_FACP->Pm1aEvtBlk, (UINT16) Value); - - if (AcpiGbl_FACP->Pm1bEvtBlk) - { - AcpiOsOut16 (AcpiGbl_FACP->Pm1bEvtBlk, (UINT16) Value); - } - - RegisterValue = 0; - } - } - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmReleaseMutex (ACPI_MTX_HARDWARE); - } - } - - else - { - /* enable register */ - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmAcquireMutex (ACPI_MTX_HARDWARE); - } - - RegisterValue = (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm1aEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)); - - DEBUG_PRINT (TRACE_IO, ("PM1a enable: Read 0x%X from 0x%X\n", - RegisterValue, (AcpiGbl_FACP->Pm1aEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)))); - - if (AcpiGbl_FACP->Pm1bEvtBlk) - { - RegisterValue |= (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm1bEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)); - - DEBUG_PRINT (TRACE_IO, ("PM1b enable: Read 0x%X from 0x%X\n", - RegisterValue, (AcpiGbl_FACP->Pm1bEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)))); - } - - switch (RegisterId) - { - case TMR_EN: - Mask = TMR_EN_MASK; - break; - - case GBL_EN: - Mask = GBL_EN_MASK; - break; - - case PWRBTN_EN: - Mask = PWRBTN_EN_MASK; - break; - - case SLPBTN_EN: - Mask = SLPBTN_EN_MASK; - break; - - case RTC_EN: - Mask = RTC_EN_MASK; - break; - - default: - Mask = 0; - break; - } - - if (ReadWrite == ACPI_WRITE) - { - RegisterValue &= ~Mask; - Value <<= AcpiHwGetBitShift (Mask); - Value &= Mask; - RegisterValue |= Value; - - DEBUG_PRINT (TRACE_IO, - ("About to write %04X to %04X\n", RegisterValue, - (AcpiGbl_FACP->Pm1aEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)))); - - AcpiOsOut16 ((AcpiGbl_FACP->Pm1aEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)), - (UINT16) RegisterValue); - - if (AcpiGbl_FACP->Pm1bEvtBlk) - { - AcpiOsOut16 ((AcpiGbl_FACP->Pm1bEvtBlk + - DIV_2 (AcpiGbl_FACP->Pm1EvtLen)), - (UINT16) RegisterValue); - } - } - if(ACPI_MTX_LOCK == UseLock) - { - AcpiCmReleaseMutex (ACPI_MTX_HARDWARE); - } - } - break; - - - case PM1_CONTROL: - - RegisterValue = 0; - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmAcquireMutex (ACPI_MTX_HARDWARE); - } - - if (RegisterId != SLP_TYPE_B) - { - /* - * SLP_TYPx registers are written differently - * than any other control registers with - * respect to A and B registers. The value - * for A may be different than the value for B - */ - - RegisterValue = (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm1aCntBlk); - DEBUG_PRINT (TRACE_IO, ("PM1a control: Read 0x%X from 0x%X\n", - RegisterValue, AcpiGbl_FACP->Pm1aCntBlk)); - } - - if (AcpiGbl_FACP->Pm1bCntBlk && RegisterId != (UINT32) SLP_TYPE_A) - { - RegisterValue |= (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm1bCntBlk); - DEBUG_PRINT (TRACE_IO, ("PM1b control: Read 0x%X from 0x%X\n", - RegisterValue, AcpiGbl_FACP->Pm1bCntBlk)); - } - - switch (RegisterId) - { - case SCI_EN: - Mask = SCI_EN_MASK; - break; - - case BM_RLD: - Mask = BM_RLD_MASK; - break; - - case GBL_RLS: - Mask = GBL_RLS_MASK; - break; - - case SLP_TYPE_A: - case SLP_TYPE_B: - Mask = SLP_TYPE_X_MASK; - break; - - case SLP_EN: - Mask = SLP_EN_MASK; - break; - - default: - Mask = 0; - break; - } - - if (ReadWrite == ACPI_WRITE) - { - RegisterValue &= ~Mask; - Value <<= AcpiHwGetBitShift (Mask); - Value &= Mask; - RegisterValue |= Value; - - /* - * SLP_TYPE_x registers are written differently - * than any other control registers with - * respect to A and B registers. The value - * for A may be different than the value for B - */ - - if (RegisterId != SLP_TYPE_B) - { - if (Mask == SLP_EN_MASK) - { - disable(); /* disable interrupts */ - } - - AcpiOsOut16 (AcpiGbl_FACP->Pm1aCntBlk, (UINT16) RegisterValue); - - if (Mask == SLP_EN_MASK) - { - /* - * Enable interrupts, the SCI handler is likely going to - * be invoked as soon as interrupts are enabled, since gpe's - * and most fixed resume events also generate SCI's. - */ - enable(); - } - } - - if (AcpiGbl_FACP->Pm1bCntBlk && RegisterId != (UINT32) SLP_TYPE_A) - { - AcpiOsOut16 (AcpiGbl_FACP->Pm1bCntBlk, (UINT16) RegisterValue); - } - } - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmReleaseMutex (ACPI_MTX_HARDWARE); - } - break; - - - case PM2_CONTROL: - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmAcquireMutex (ACPI_MTX_HARDWARE); - } - - RegisterValue = (UINT32) AcpiOsIn16 (AcpiGbl_FACP->Pm2CntBlk); - DEBUG_PRINT (TRACE_IO, ("PM2 control: Read 0x%X from 0x%X\n", - RegisterValue, AcpiGbl_FACP->Pm2CntBlk)); - - switch (RegisterId) - { - case ARB_DIS: - Mask = ARB_DIS_MASK; - break; - - default: - Mask = 0; - break; - } - - if (ReadWrite == ACPI_WRITE) - { - RegisterValue &= ~Mask; - Value <<= AcpiHwGetBitShift (Mask); - Value &= Mask; - RegisterValue |= Value; - - DEBUG_PRINT (TRACE_IO, - ("About to write %04X to %04X\n", RegisterValue, - AcpiGbl_FACP->Pm2CntBlk)); - - AcpiOsOut16 (AcpiGbl_FACP->Pm2CntBlk, (UINT16) RegisterValue); - } - - if (ACPI_MTX_LOCK == UseLock) - { - AcpiCmReleaseMutex (ACPI_MTX_HARDWARE); - } - break; - - - case PM_TIMER: - - RegisterValue = AcpiOsIn32 (AcpiGbl_FACP->PmTmrBlk); - DEBUG_PRINT (TRACE_IO, ("PM_TIMER: Read 0x%X from 0x%X\n", - RegisterValue, AcpiGbl_FACP->PmTmrBlk)); - - Mask = ACPI_UINT32_MAX; - break; - - - case GPE1_EN_BLOCK: - - GpeReg = (AcpiGbl_FACP->Gpe1Blk + AcpiGbl_FACP->Gpe1Base) + - (GpeReg + (DIV_2 (AcpiGbl_FACP->Gpe1BlkLen))); - - - case GPE1_STS_BLOCK: - - if (!GpeReg) - { - GpeReg = (AcpiGbl_FACP->Gpe1Blk + AcpiGbl_FACP->Gpe1Base); - } - - - case GPE0_EN_BLOCK: - - if (!GpeReg) - { - GpeReg = AcpiGbl_FACP->Gpe0Blk + DIV_2 (AcpiGbl_FACP->Gpe0BlkLen); - } - - - case GPE0_STS_BLOCK: - - if (!GpeReg) - { - GpeReg = AcpiGbl_FACP->Gpe0Blk; - } - - /* Determine the bit to be accessed */ - - Mask = (((UINT32) RegisterId) & BIT_IN_REGISTER_MASK); - Mask = 1 << (Mask-1); - - /* - * The base address of the GPE 0 Register Block - * Plus 1/2 the length of the GPE 0 Register Block - * The enable register is the register following the Status Register - * and each register is defined as 1/2 of the total Register Block - */ - - /* - * This sets the bit within EnableBit that needs to be written to - * the register indicated in Mask to a 1, all others are 0 - */ - - if (Mask > LOW_BYTE) - { - /* Shift the value 1 byte to the right and add 1 to the register */ - - Mask >>= ONE_BYTE; - GpeReg++; - } - - /* Now get the current Enable Bits in the selected Reg */ - - if(ACPI_MTX_LOCK == UseLock) - { - AcpiCmAcquireMutex (ACPI_MTX_HARDWARE); - } - - RegisterValue = (UINT32) AcpiOsIn8 (GpeReg); - DEBUG_PRINT (TRACE_IO, ("GPE Enable bits: Read 0x%X from 0x%X\n", - RegisterValue, GpeReg)); - - if (ReadWrite == ACPI_WRITE) - { - RegisterValue &= ~Mask; - Value <<= AcpiHwGetBitShift (Mask); - Value &= Mask; - RegisterValue |= Value; - - /* This write will put the Action state into the General Purpose */ - - /* Enable Register indexed by the value in Mask */ - - DEBUG_PRINT (TRACE_IO, ("About to write %04X to %04X\n", - RegisterValue, GpeReg)); - - AcpiOsOut8 (GpeReg, (UINT8) RegisterValue); - RegisterValue = (UINT32) AcpiOsIn8 (GpeReg); - } - - if(ACPI_MTX_LOCK == UseLock) - { - AcpiCmReleaseMutex (ACPI_MTX_HARDWARE); - } - break; - - - case PROCESSOR_BLOCK: - default: - - Mask = 0; - break; - } - - - RegisterValue &= Mask; - RegisterValue >>= AcpiHwGetBitShift (Mask); - - DEBUG_PRINT (TRACE_IO, ("Register I/O: returning 0x%X\n", RegisterValue)); - return_VALUE (RegisterValue); -} |