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/*
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* pfmlib_intel_nhm.c : Intel Nehalem core PMU
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*
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* Copyright (c) 2008 Google, Inc
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* Contributed by Stephane Eranian <eranian@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Nehalem PMU = architectural perfmon v3 + OFFCORE + PEBS v2 + LBR
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*/
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/* private headers */
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#include "pfmlib_priv.h"
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#include "pfmlib_intel_x86_priv.h"
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#if 0
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static int pfm_nhm_lbr_encode(void *this, pfmlib_event_desc_t *e, uint64_t *codes, int *count, pfmlib_perf_attr_t *attrs);
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static int pfm_nhm_offcore_encode(void *this, pfmlib_event_desc_t *e, uint64_t *codes, int *count, pfmlib_perf_attr_t *attrs);
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#endif
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#include "events/intel_nhm_events.h"
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static const int nhm_models[] = {
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26,
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30,
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31,
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0
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};
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static const int nhm_ex_models[] = {
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46,
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0
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};
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static int
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pfm_nhm_init(void *this)
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{
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pfm_intel_x86_cfg.arch_version = 3;
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return PFM_SUCCESS;
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}
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/*
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* the following function implement the model
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* specific API directly available to user
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*/
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static const char *data_src_encodings[]={
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/* 0 */ "unknown L3 cache miss",
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/* 1 */ "minimal latency core cache hit. Request was satisfied by L1 data cache",
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/* 2 */ "pending core cache HIT. Outstanding core cache miss to same cacheline address already underway",
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/* 3 */ "data request satisfied by the L2",
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/* 4 */ "L3 HIT. Local or remote home request that hit L3 in the uncore with no coherency actions required (snooping)",
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/* 5 */ "L3 HIT. Local or remote home request that hit L3 and was serviced by another core with a cross core snoop where no modified copy was found (clean)",
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/* 6 */ "L3 HIT. Local or remote home request that hit L3 and was serviced by another core with a cross core snoop where modified copies were found (HITM)",
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/* 7 */ "reserved",
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/* 8 */ "L3 MISS. Local homed request that missed L3 and was serviced by forwarded data following a cross package snoop where no modified copy was found (remote home requests are not counted)",
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/* 9 */ "reserved",
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/* 10 */ "L3 MISS. Local homed request that missed L3 and was serviced by local DRAM (go to shared state)",
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/* 11 */ "L3 MISS. Remote homed request that missed L3 and was serviced by remote DRAM (go to shared state)",
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/* 12 */ "L3 MISS. Local homed request that missed L3 and was serviced by local DRAM (go to exclusive state)",
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/* 13 */ "L3 MISS. Remote homed request that missed L3 and was serviced by remote DRAM (go to exclusive state)",
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/* 14 */ "reserved",
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/* 15 */ "request to uncacheable memory"
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};
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/*
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* return data source encoding based on index in val
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* To be used with PEBS load latency filtering to decode
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* source of the load miss
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*/
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const char *
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pfm_nhm_data_src_desc(int val)
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{
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if (val > 15 || val < 0)
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return NULL;
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return data_src_encodings[val];
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}
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#if 0
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static int
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pfm_nhm_lbr_encode(void *this, pfmlib_event_desc_t *e, uint64_t *codes, int *count, pfmlib_perf_attr_t *attrs)
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{
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return PFM_ERR_NOTSUPP;
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}
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static int
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pfm_nhm_offcore_encode(void *this, pfmlib_event_desc_t *e, uint64_t *codes, int *count, pfmlib_perf_attr_t *attrs)
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{
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return PFM_ERR_NOTSUPP;
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}
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#endif
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pfmlib_pmu_t intel_nhm_support={
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.desc = "Intel Nehalem",
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.name = "nhm",
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.pmu = PFM_PMU_INTEL_NHM,
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.pme_count = LIBPFM_ARRAY_SIZE(intel_nhm_pe),
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.type = PFM_PMU_TYPE_CORE,
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.supported_plm = INTEL_X86_PLM,
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.num_cntrs = 4,
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.num_fixed_cntrs = 3,
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.max_encoding = 2, /* because of OFFCORE_RESPONSE */
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.pe = intel_nhm_pe,
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.atdesc = intel_x86_mods,
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.flags = PFMLIB_PMU_FL_RAW_UMASK
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| INTEL_X86_PMU_FL_ECMASK,
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.cpu_family = 6,
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.cpu_models = nhm_models,
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.pmu_detect = pfm_intel_x86_model_detect,
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.pmu_init = pfm_nhm_init,
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.get_event_encoding[PFM_OS_NONE] = pfm_intel_x86_get_encoding,
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PFMLIB_ENCODE_PERF(pfm_intel_x86_get_perf_encoding),
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.get_event_first = pfm_intel_x86_get_event_first,
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.get_event_next = pfm_intel_x86_get_event_next,
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.event_is_valid = pfm_intel_x86_event_is_valid,
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.validate_table = pfm_intel_x86_validate_table,
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.get_event_info = pfm_intel_x86_get_event_info,
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.get_event_attr_info = pfm_intel_x86_get_event_attr_info,
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PFMLIB_VALID_PERF_PATTRS(pfm_intel_x86_perf_validate_pattrs),
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.get_event_nattrs = pfm_intel_x86_get_event_nattrs,
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.can_auto_encode = pfm_intel_x86_can_auto_encode,
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};
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pfmlib_pmu_t intel_nhm_ex_support={
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.desc = "Intel Nehalem EX",
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.name = "nhm_ex",
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.pmu = PFM_PMU_INTEL_NHM_EX,
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.pme_count = LIBPFM_ARRAY_SIZE(intel_nhm_pe),
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.type = PFM_PMU_TYPE_CORE,
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.supported_plm = INTEL_X86_PLM,
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.num_cntrs = 4,
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.num_fixed_cntrs = 3,
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.max_encoding = 2, /* because of OFFCORE_RESPONSE */
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.pe = intel_nhm_pe,
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.atdesc = intel_x86_mods,
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.flags = PFMLIB_PMU_FL_RAW_UMASK
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| INTEL_X86_PMU_FL_ECMASK,
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.cpu_family = 6,
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.cpu_models = nhm_ex_models,
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.pmu_detect = pfm_intel_x86_model_detect,
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.pmu_init = pfm_nhm_init,
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.get_event_encoding[PFM_OS_NONE] = pfm_intel_x86_get_encoding,
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PFMLIB_ENCODE_PERF(pfm_intel_x86_get_perf_encoding),
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.get_event_first = pfm_intel_x86_get_event_first,
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.get_event_next = pfm_intel_x86_get_event_next,
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.event_is_valid = pfm_intel_x86_event_is_valid,
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.validate_table = pfm_intel_x86_validate_table,
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.get_event_info = pfm_intel_x86_get_event_info,
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.get_event_attr_info = pfm_intel_x86_get_event_attr_info,
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PFMLIB_VALID_PERF_PATTRS(pfm_intel_x86_perf_validate_pattrs),
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.get_event_nattrs = pfm_intel_x86_get_event_nattrs,
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.can_auto_encode = pfm_intel_x86_can_auto_encode,
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};
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