diff options
Diffstat (limited to 'src/spdk/intel-ipsec-mb/include/cpu_feature.h')
-rw-r--r-- | src/spdk/intel-ipsec-mb/include/cpu_feature.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/spdk/intel-ipsec-mb/include/cpu_feature.h b/src/spdk/intel-ipsec-mb/include/cpu_feature.h new file mode 100644 index 000000000..1347094a7 --- /dev/null +++ b/src/spdk/intel-ipsec-mb/include/cpu_feature.h @@ -0,0 +1,52 @@ +/******************************************************************************* + Copyright (c) 2018, Intel Corporation + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of Intel Corporation nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*******************************************************************************/ + +#include "intel-ipsec-mb.h" + +#ifndef CPU_FEATURE_H +#define CPU_FEATURE_H + +/** + * @brief Detects hardware features and returns their status + * + * @return Bitmask representing presence of CPU features/extensions, + * see intel-ipsec-mb.h IMB_FEATURE_xyz definitions for details. + */ +IMB_DLL_LOCAL uint64_t cpu_feature_detect(void); + +/** + * @brief Modifies CPU \a features mask based on requested \a flags + * + * @param flags bitmask describing CPU feature adjustments + * @param features bitmask describing present CPU features + * + * @return \a features with applied modifications on them via \a flags + */ +IMB_DLL_LOCAL uint64_t +cpu_feature_adjust(const uint64_t flags, uint64_t features); + +#endif /* CPU_FEATURE_H */ |