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Diffstat (limited to 'sys/contrib/dev/acpica/Subsystem/Hardware/hwcpu32.c')
| -rw-r--r-- | sys/contrib/dev/acpica/Subsystem/Hardware/hwcpu32.c | 837 |
1 files changed, 0 insertions, 837 deletions
diff --git a/sys/contrib/dev/acpica/Subsystem/Hardware/hwcpu32.c b/sys/contrib/dev/acpica/Subsystem/Hardware/hwcpu32.c deleted file mode 100644 index 8401061621cd..000000000000 --- a/sys/contrib/dev/acpica/Subsystem/Hardware/hwcpu32.c +++ /dev/null @@ -1,837 +0,0 @@ -/****************************************************************************** - * - * Name: hwcpu32.c - CPU support for IA32 (Throttling, CxStates) - * $Revision: 40 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999, 2000, 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 "acnamesp.h" -#include "achware.h" - -#define _COMPONENT HARDWARE - MODULE_NAME ("Hwcpu32") - - -#define BIT_4 0x10 /* TBD: [investigate] is this correct? */ - - -/**************************************************************************** - * - * FUNCTION: AcpiHwEnterC1 - * - * PARAMETERS: PblkAddress - Address of the processor control block - * PmTimerTicks - Number of PM timer ticks elapsed while asleep - * - * RETURN: Function status. - * - * DESCRIPTION: Set C1 state on IA32 processor (halt) - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwEnterC1( - ACPI_IO_ADDRESS PblkAddress, - UINT32 *PmTimerTicks) -{ - UINT32 Timer = 0; - - - if (!PmTimerTicks) - { - /* - * Enter C1: - * --------- - */ - enable(); - halt(); - *PmTimerTicks = ACPI_UINT32_MAX; - } - else - { - Timer = AcpiHwPmtTicks (); - - /* - * Enter C1: - * --------- - */ - enable (); - halt (); - - /* - * Compute Time in C1: - * ------------------- - */ - Timer = AcpiHwPmtTicks () - Timer; - - *PmTimerTicks = Timer; - } - - return (AE_OK); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwEnterC2 - * - * PARAMETERS: PblkAddress - Address of the processor control block - * PmTimerTicks - Number of PM timer ticks elapsed while asleep - * - * RETURN: <none> - * - * DESCRIPTION: Set C2 state on IA32 processor - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwEnterC2( - ACPI_IO_ADDRESS PblkAddress, - UINT32 *PmTimerTicks) -{ - UINT32 Timer = 0; - - - if (!PblkAddress || !PmTimerTicks) - { - return (AE_BAD_PARAMETER); - } - - /* - * Disable interrupts before all C2/C3 transitions. - */ - disable (); - - Timer = AcpiHwPmtTicks (); - - /* - * Enter C2: - * --------- - * Read from the P_LVL2 (P_BLK+4) register to invoke a C2 transition. - */ - AcpiOsIn8 ((ACPI_IO_ADDRESS) (PblkAddress + 4)); - - /* - * Perform Dummy Op: - * ----------------- - * We have to do something useless after reading LVL2 because chipsets - * cannot guarantee that STPCLK# gets asserted in time to freeze execution. - */ - AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, PM2_CONTROL); - - /* - * Compute Time in C2: - * ------------------- - */ - Timer = AcpiHwPmtTicks () - Timer; - - *PmTimerTicks = Timer; - - /* - * Re-enable interrupts after coming out of C2/C3. - */ - enable (); - - return (AE_OK); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwEnterC3 - * - * PARAMETERS: PblkAddress - Address of the processor control block - * PmTimerTicks - Number of PM timer ticks elapsed while asleep - * - * RETURN: Status of function - * - * DESCRIPTION: Set C3 state on IA32 processor (UP only, cache coherency via - * disabling bus mastering) - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwEnterC3( - ACPI_IO_ADDRESS PblkAddress, - UINT32 *PmTimerTicks) -{ - UINT32 Timer = 0; - UINT32 BusMasterStatus = 0; - - - if (!PblkAddress || !PmTimerTicks) - { - return (AE_BAD_PARAMETER); - } - - /* - * Check the BM_STS bit, if it is set, do not enter C3 - * but clear the bit (with a write) and exit, telling - * the calling module that we spent zero time in C3. - * If bus mastering continues, this action should - * eventually cause a demotion to C2 - */ - if (1 == (BusMasterStatus = - AcpiHwRegisterBitAccess (ACPI_READ, ACPI_MTX_LOCK, BM_STS))) - { - /* - * Clear the BM_STS bit by setting it. - */ - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, BM_STS, 1); - *PmTimerTicks = 0; - return (AE_OK); - } - - /* - * Disable interrupts before all C2/C3 transitions. - */ - disable(); - - /* - * Disable Bus Mastering: - * ---------------------- - * Set the PM2_CNT.ARB_DIS bit (bit #0), preserving all other bits. - */ - AcpiHwRegisterBitAccess(ACPI_WRITE, ACPI_MTX_LOCK, ARB_DIS, 1); - - /* - * Get the timer base before entering C state - */ - Timer = AcpiHwPmtTicks (); - - /* - * Enter C3: - * --------- - * Read from the P_LVL3 (P_BLK+5) register to invoke a C3 transition. - */ - AcpiOsIn8 ((ACPI_IO_ADDRESS)(PblkAddress + 5)); - - /* - * Perform Dummy Op: - * ----------------- - * We have to do something useless after reading LVL3 because chipsets - * cannot guarantee that STPCLK# gets asserted in time to freeze execution. - */ - AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, PM2_CONTROL); - /* - * Immediately compute the time in the C state - */ - Timer = AcpiHwPmtTicks() - Timer; - - /* - * Re-Enable Bus Mastering: - * ------------------------ - * Clear the PM2_CNT.ARB_DIS bit (bit #0), preserving all other bits. - */ - AcpiHwRegisterBitAccess(ACPI_WRITE, ACPI_MTX_LOCK, ARB_DIS, 0); - - /* TBD: [Unhandled]: Support 24-bit timers (this algorithm assumes 32-bit) */ - - *PmTimerTicks = Timer; - - /* - * Re-enable interrupts after coming out of C2/C3. - */ - enable(); - - return (AE_OK); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwEnterCx - * - * PARAMETERS: ProcessorHandle - handle of the processor - * - * RETURN: Status of function - * - * DESCRIPTION: Invoke the currently active processor Cx handler to put this - * processor to sleep. - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwEnterCx ( - ACPI_IO_ADDRESS PblkAddress, - UINT32 *PmTimerTicks) -{ - - if (!AcpiHwCxHandlers[AcpiHwActiveCxState]) - { - return (AE_SUPPORT); - } - - return (AcpiHwCxHandlers[AcpiHwActiveCxState] (PblkAddress, PmTimerTicks)); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwSetCx - * - * PARAMETERS: State - value (1-3) of the Cx state to 'make active' - * - * RETURN: Function status. - * - * DESCRIPTION: Sets the state to use during calls to AcpiHwEnterCx(). - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwSetCx ( - UINT32 CxState) -{ - /* - * Supported State? - * ---------------- - */ - if ((CxState < 1) || (CxState > 3)) - { - return (AE_BAD_PARAMETER); - } - - if (!AcpiHwCxHandlers[CxState]) - { - return (AE_SUPPORT); - } - - /* - * New Cx State? - * ------------- - * We only care when moving from one state to another... - */ - if (AcpiHwActiveCxState == CxState) - { - return (AE_OK); - } - - /* - * Prepare to Use New State: - * ------------------------- - * If the new CxState is C3, the BM_RLD bit must be set to allow - * the generation of a bus master requets to cause the processor - * in the C3 state to transition to the C0 state. - */ - switch (CxState) - { - case 3: - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, BM_RLD, 1); - break; - } - - /* - * Clean up from Old State: - * ------------------------ - * If the old CxState was C3, the BM_RLD bit is reset. When the - * bit is reset, the generation of a bus master request does not - * effect any processor in the C3 state. - */ - switch (AcpiHwActiveCxState) - { - case 3: - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, BM_RLD, 0); - break; - } - - /* - * Enable: - * ------- - */ - AcpiHwActiveCxState = CxState; - - return (AE_OK); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwGetCxInfo - * - * PARAMETERS: CxStates - Information (latencies) on all Cx states - * - * RETURN: Status of function - * - * DESCRIPTION: This function is called both to initialize Cx handling - * and retrieve the current Cx information (latency values). - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwGetCxInfo ( - UINT32 CxStates[]) -{ - BOOLEAN SMP_system = FALSE; - - - FUNCTION_TRACE("HwGetCxInfo"); - - - if (!CxStates) - { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* - * TBD: [Unhandled] need to init SMP_system using info from the MAPIC - * table. - */ - - /* - * Set Defaults: - * ------------- - * C0 and C1 support is implied (but what about that PROC_C1 register - * in the FADT?!?!). Set C2/C3 to max. latency (not supported until - * proven otherwise). - */ - CxStates[0] = 0; - CxStates[1] = 0; - CxStates[2] = MAX_CX_STATE_LATENCY; - CxStates[3] = MAX_CX_STATE_LATENCY; - - /* - * C2 Supported? - * ------------- - * We're only supporting C2 when the latency is <= 100 microseconds, - * and on SMP systems when P_LVL2_UP (which indicates C2 only on UP) - * is not set. - */ - if (AcpiGbl_FADT->Plvl2Lat <= 100) - { - if (!SMP_system) - { - AcpiHwCxHandlers[2] = AcpiHwEnterC2; - CxStates[2] = AcpiGbl_FADT->Plvl2Lat; - } - - else if (!AcpiGbl_FADT->Plvl2Up) - { - AcpiHwCxHandlers[2] = AcpiHwEnterC2; - CxStates[2] = AcpiGbl_FADT->Plvl2Lat; - } - } - - /* - * C3 Supported? - * ------------- - * We're only supporting C3 on UP systems when the latency is - * <= 1000 microseconds and that include the ability to disable - * Bus Mastering while in C3 (ARB_DIS) but allows Bus Mastering - * requests to wake the system from C3 (BM_RLD). Note his method - * of maintaining cache coherency (disabling of bus mastering) - * cannot be used on SMP systems, and flushing caches (e.g. WBINVD) - * is simply too costly (at this time). - */ - if (AcpiGbl_FADT->Plvl3Lat <= 1000) - { - if (!SMP_system && (AcpiGbl_FADT->XPm2CntBlk.Address && - AcpiGbl_FADT->Pm2CntLen)) - { - AcpiHwCxHandlers[3] = AcpiHwEnterC3; - CxStates[3] = AcpiGbl_FADT->Plvl3Lat; - } - } - - return_ACPI_STATUS(AE_OK); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwGetCxHandler - * - * PARAMETERS: State - the Cx state - * Handler - pointer to location for the returned handler - * - * RETURN: Status of function - * - * DESCRIPTION: This function is called to get an installed Cx state handler. - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwGetCxHandler ( - UINT32 CxState, - ACPI_C_STATE_HANDLER *Handler) -{ - FUNCTION_TRACE ("HwGetCxHandler"); - - - if ((CxState == 0) || (CxState >= MAX_CX_STATES) || !Handler) - { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - *Handler = AcpiHwCxHandlers[CxState]; - - return_ACPI_STATUS(AE_OK); -} - - -/**************************************************************************** - * - * FUNCTION: AcpiHwSetCxHandler - * - * PARAMETERS: CxState - the Cx state - * Handler - new Cx state handler - * - * RETURN: Status of function - * - * DESCRIPTION: This function is called to install a new Cx state handler. - * - ****************************************************************************/ - -ACPI_STATUS -AcpiHwSetCxHandler ( - UINT32 CxState, - ACPI_C_STATE_HANDLER Handler) -{ - FUNCTION_TRACE ("HwSetCxHandler"); - - - if ((CxState == 0) || (CxState >= MAX_CX_STATES) || !Handler) - { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - AcpiHwCxHandlers[CxState] = Handler; - - return_ACPI_STATUS(AE_OK); -} - - -/************************************************************************** - * - * FUNCTION: AcpiHwLocalPow - * - * PARAMETERS: x,y operands - * - * RETURN: result - * - * DESCRIPTION: Compute x ^ y - * - *************************************************************************/ - -NATIVE_UINT -AcpiHwLocalPow ( - NATIVE_UINT x, - NATIVE_UINT y) -{ - NATIVE_UINT i; - NATIVE_UINT Result = 1; - - - for (i = 0; i < y; i++) - { - Result = Result * x; - } - - return (Result); -} - - -/************************************************************************** - * - * FUNCTION: AcpiHwEnableThrottling - * - * PARAMETERS: PblkAddress - Address of Pcnt (Processor Control) - * register - * - * RETURN: none - * - * DESCRIPTION: Enable throttling by setting the THT_EN bit. - * - *************************************************************************/ - -void -AcpiHwEnableThrottling ( - ACPI_IO_ADDRESS PblkAddress) -{ - UINT32 PblkValue; - - - FUNCTION_TRACE ("EnableThrottling"); - - - PblkValue = AcpiOsIn32 (PblkAddress); - PblkValue = PblkValue | BIT_4; - AcpiOsOut32 (PblkAddress, PblkValue); - - return_VOID; -} - - -/************************************************************************** - * - * FUNCTION: AcpiHwDisableThrottling - * - * PARAMETERS: PblkAddress - Address of Pcnt (Processor Control) - * register - * - * RETURN: none - * - * DESCRIPTION:Disable throttling by clearing the THT_EN bit - * - *************************************************************************/ - -void -AcpiHwDisableThrottling ( - ACPI_IO_ADDRESS PblkAddress) -{ - UINT32 PblkValue; - - - FUNCTION_TRACE ("DisableThrottling"); - - - PblkValue = AcpiOsIn32 (PblkAddress); - PblkValue = PblkValue & (~(UINT32)BIT_4); - AcpiOsOut32 (PblkAddress, PblkValue); - - return_VOID; -} - - -/************************************************************************** - * - * FUNCTION: AcpiHwGetDutyCycle - * - * PARAMETERS: DutyOffset Pcnt register duty cycle field offset - * PblkAddress Pcnt register address in chipset - * NumThrottleStates # of CPU throttle states this system - * supports - * - * RETURN: none - * - * DESCRIPTION: Get the duty cycle from the chipset - * - *************************************************************************/ - -UINT32 -AcpiHwGetDutyCycle ( - UINT8 DutyOffset, - ACPI_IO_ADDRESS PblkAddress, - UINT32 NumThrottleStates) -{ - NATIVE_UINT Index; - UINT32 Duty32Value; - UINT32 PcntMaskOffDutyField; - - - FUNCTION_TRACE ("GetDutyCycle"); - - - /* - * Use NumThrottleStates - 1 as mask [ex. 8 - 1 = 7 (Fh)] - * and then shift it into the right position - */ - PcntMaskOffDutyField = NumThrottleStates - 1; - - /* - * Read in the current value from the port - */ - Duty32Value = AcpiOsIn32 ((ACPI_IO_ADDRESS) PblkAddress); - - /* - * Shift the the value to LSB - */ - for (Index = 0; Index < (NATIVE_UINT) DutyOffset; Index++) - { - Duty32Value = Duty32Value >> 1; - } - - /* - * Get the duty field only - */ - Duty32Value = Duty32Value & PcntMaskOffDutyField; - - return_VALUE ((UINT32) Duty32Value); -} - - -/************************************************************************** - * - * FUNCTION: AcpiHwProgramDutyCycle - * - * PARAMETERS: DutyOffset Pcnt register duty cycle field offset - * DutyCycle duty cycle to program into chipset - * PblkAddress Pcnt register address in chipset - * NumThrottleStates # of CPU throttle states this system - * supports - * - * RETURN: none - * - * DESCRIPTION: Program chipset with specified duty cycle by bit-shifting the - * duty cycle bits to the appropriate offset, reading the duty - * cycle register, OR-ing in the duty cycle, and writing it to - * the Pcnt register. - * - *************************************************************************/ - -void -AcpiHwProgramDutyCycle ( - UINT8 DutyOffset, - UINT32 DutyCycle, - ACPI_IO_ADDRESS PblkAddress, - UINT32 NumThrottleStates) -{ - NATIVE_UINT Index; - UINT32 Duty32Value; - UINT32 PcntMaskOffDutyField; - UINT32 PortValue; - - - FUNCTION_TRACE ("HwProgramDutyCycle"); - - - /* - * valid DutyCycle passed - */ - Duty32Value = DutyCycle; - - /* - * use NumThrottleStates - 1 as mask [ex. 8 - 1 = 7 (Fh)] - * and then shift it into the right position - */ - PcntMaskOffDutyField = NumThrottleStates - 1; - - /* - * Shift the mask - */ - for (Index = 0; Index < (NATIVE_UINT) DutyOffset; Index++) - { - PcntMaskOffDutyField = PcntMaskOffDutyField << 1; - Duty32Value = Duty32Value << 1; - } - - /* - * Read in the current value from the port - */ - PortValue = AcpiOsIn32 ((ACPI_IO_ADDRESS) PblkAddress); - - /* - * Mask off the duty field so we don't OR in junk! - */ - PortValue = PortValue & (~PcntMaskOffDutyField); - - /* - * OR in the bits we want to write out to the port - */ - PortValue = (PortValue | Duty32Value) & (~(UINT32)BIT_4); - - /* - * write it to the port - */ - AcpiOsOut32 ((ACPI_IO_ADDRESS) PblkAddress, PortValue); - - return_VOID; -} |