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127 lines
4.9 KiB
C
127 lines
4.9 KiB
C
/*
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* Copyright 2010-2015 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, version 2.1.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* Disclaimer: The codes contained in these modules may be specific
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* to the Intel Software Development Platform codenamed Knights Ferry,
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* and the Intel product codenamed Knights Corner, and are not backward
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* compatible with other Intel products. Additionally, Intel will NOT
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* support the codes or instruction set in future products.
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*
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* Intel offers no warranty of any kind regarding the code. This code is
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* licensed on an "AS IS" basis and Intel is not obligated to provide
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* any support, assistance, installation, training, or other services
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* of any kind. Intel is also not obligated to provide any updates,
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* enhancements or extensions. Intel specifically disclaims any warranty
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* of merchantability, non-infringement, fitness for any particular
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* purpose, and any other warranty.
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*
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* Further, Intel disclaims all liability of any kind, including but
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* not limited to liability for infringement of any proprietary rights,
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* relating to the use of the code, even if Intel is notified of the
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* possibility of such liability. Except as expressly stated in an Intel
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* license agreement provided with this code and agreed upon with Intel,
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* no license, express or implied, by estoppel or otherwise, to any
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* intellectual property rights is granted herein.
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*/
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#ifndef _COISYSINFO_COMMON_H
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#define _COISYSINFO_COMMON_H
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/** @ingroup COISysInfo
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* @addtogroup COISysInfoCommon
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@{
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* @file common/COISysInfo_common.h
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* This interface allows developers to query the platform for system level
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* information. */
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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#include "../common/COITypes_common.h"
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#include <assert.h>
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#endif // DOXYGEN_SHOULD_SKIP_THIS
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#define INITIAL_APIC_ID_BITS 0xFF000000 // EBX[31:24] unique APIC ID
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///////////////////////////////////////////////////////////////////////////////
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/// \fn uint32_t COISysGetAPICID(void)
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/// @return The Advanced Programmable Interrupt Controller (APIC) ID of
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/// the hardware thread on which the caller is running.
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///
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/// @warning APIC IDs are unique to each hardware thread within a processor,
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/// but may not be sequential.
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COIACCESSAPI
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uint32_t COISysGetAPICID(void);
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///////////////////////////////////////////////////////////////////////////////
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///
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/// @return The number of cores exposed by the processor on which the caller is
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/// running. Returns 0 if there is an error loading the processor info.
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COIACCESSAPI
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uint32_t COISysGetCoreCount(void);
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///////////////////////////////////////////////////////////////////////////////
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///
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/// @return The number of hardware threads exposed by the processor on which
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/// the caller is running. Returns 0 if there is an error loading processor
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/// info.
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COIACCESSAPI
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uint32_t COISysGetHardwareThreadCount(void);
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///////////////////////////////////////////////////////////////////////////////
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///
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/// @return The index of the hardware thread on which the caller is running.
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///
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/// The indexes of neighboring hardware threads will differ by a value of one
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/// and are within the range zero through COISysGetHardwareThreadCount()-1.
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/// Returns ((uint32_t)-1) if there was an error loading processor info.
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COIACCESSAPI
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uint32_t COISysGetHardwareThreadIndex(void);
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///////////////////////////////////////////////////////////////////////////////
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///
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/// @return The index of the core on which the caller is running.
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///
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/// The indexes of neighboring cores will differ by a value of one and are
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/// within the range zero through COISysGetCoreCount()-1. Returns ((uint32_t)-1)
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/// if there was an error loading processor info.
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COIACCESSAPI
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uint32_t COISysGetCoreIndex(void);
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///////////////////////////////////////////////////////////////////////////////
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///
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/// @return The number of level 2 caches within the processor on which the
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/// caller is running. Returns ((uint32_t)-1) if there was an error loading
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/// processor info.
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COIACCESSAPI
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uint32_t COISysGetL2CacheCount(void);
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///////////////////////////////////////////////////////////////////////////////
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///
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/// @return The index of the level 2 cache on which the caller is running.
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/// Returns ((uint32_t)-1) if there was an error loading processor info.
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///
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/// The indexes of neighboring cores will differ by a value of one and are
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/// within the range zero through COISysGetL2CacheCount()-1.
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COIACCESSAPI
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uint32_t COISysGetL2CacheIndex(void);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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/*! @} */
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#endif /* _COISYSINFO_COMMON_H */
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