lib/libpmc/libpmc_pmu_util.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2018, Matthew Macy
   5  * Copyright (c) 2021, The FreeBSD Foundation
   6  *
   7  * Portions of this software were developed by Mitchell Horne
   8  * under sponsorship from the FreeBSD Foundation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD$
  32  *
  33  */
  34
  35 #include <sys/types.h>
  36 #include <sys/errno.h>
  37 #include <sys/pmc.h>
  38 #include <sys/sysctl.h>
  39 #include <stddef.h>
  40 #include <stdlib.h>
  41 #include <limits.h>
  42 #include <regex.h>
  43 #include <string.h>
  44 #include <pmc.h>
  45 #include <pmclog.h>
  46 #include <assert.h>
  47 #include <libpmcstat.h>
  48 #include "pmu-events/pmu-events.h"
  49
  50 struct pmu_alias {
  51         const char *pa_alias;
  52         const char *pa_name;
  53 };
  54
  55 #if defined(__amd64__) || defined(__i386__)
  56 typedef enum {
  57         PMU_INVALID,
  58         PMU_INTEL,
  59         PMU_AMD,
  60 } pmu_mfr_t;
  61
  62 static struct pmu_alias pmu_intel_alias_table[] = {
  63         {"UNHALTED_CORE_CYCLES", "cpu_clk_unhalted.thread"},
  64         {"UNHALTED-CORE-CYCLES", "cpu_clk_unhalted.thread"},
  65         {"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"},
  66         {"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"},
  67         {"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  68         {"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  69         {"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  70         {"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  71         {"RESOURCE_STALL", "RESOURCE_STALLS.ANY"},
  72         {"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"},
  73         {"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  74         {"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  75         {"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  76         {"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  77         {"unhalted-cycles", "cpu_clk_unhalted.thread"},
  78         {"instructions", "inst_retired.any"},
  79         {"branch-mispredicts", "br_misp_retired.all_branches"},
  80         {"branches", "br_inst_retired.all_branches"},
  81         {"interrupts", "hw_interrupts.received"},
  82         {"ic-misses", "frontend_retired.l1i_miss"},
  83         {NULL, NULL},
  84 };
  85
  86 static struct pmu_alias pmu_amd_alias_table[] = {
  87         {"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"},
  88         {"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"},
  89         {"LLC_MISSES", "l3_comb_clstr_state.request_miss"},
  90         {"LLC-MISSES", "l3_comb_clstr_state.request_miss"},
  91         {"LLC_REFERENCE", "l3_request_g1.caching_l3_cache_accesses"},
  92         {"LLC-REFERENCE", "l3_request_g1.caching_l3_cache_accesses"},
  93         {"BRANCH_INSTRUCTION_RETIRED", "ex_ret_brn"},
  94         {"BRANCH-INSTRUCTION-RETIRED", "ex_ret_brn"},
  95         {"BRANCH_MISSES_RETIRED", "ex_ret_brn_misp"},
  96         {"BRANCH-MISSES-RETIRED", "ex_ret_brn_misp"},
  97         {"unhalted-cycles", "ls_not_halted_cyc"},
  98         {"instructions", "ex_ret_instr",},
  99         {"branch-mispredicts", "ex_ret_brn_misp"},
 100         {"branches", "ex_ret_brn"},
 101         {"interrupts", "ls_int_taken"}, /* Not on amdzen1 */
 102         {NULL, NULL},
 103 };
 104
 105
 106 static pmu_mfr_t
 107 pmu_events_mfr(void)
 108 {
 109         char buf[PMC_CPUID_LEN];
 110         size_t s = sizeof(buf);
 111         pmu_mfr_t mfr;
 112
 113         if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 114             (void *)NULL, 0) == -1)
 115                 return (PMU_INVALID);
 116         if (strcasestr(buf, "AuthenticAMD") != NULL ||
 117             strcasestr(buf, "HygonGenuine") != NULL)
 118                 mfr = PMU_AMD;
 119         else if (strcasestr(buf, "GenuineIntel") != NULL)
 120                 mfr = PMU_INTEL;
 121         else
 122                 mfr = PMU_INVALID;
 123         return (mfr);
 124 }
 125
 126 /*
 127  *  The Intel fixed mode counters are:
 128  *      "inst_retired.any",
 129  *      "cpu_clk_unhalted.thread",
 130  *      "cpu_clk_unhalted.thread_any",
 131  *      "cpu_clk_unhalted.ref_tsc",
 132  *
 133  */
 134
 135 static const char *
 136 pmu_alias_get(const char *name)
 137 {
 138         pmu_mfr_t mfr;
 139         struct pmu_alias *pa;
 140         struct pmu_alias *pmu_alias_table;
 141
 142         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 143                 return (name);
 144         if (mfr == PMU_AMD)
 145                 pmu_alias_table = pmu_amd_alias_table;
 146         else if (mfr == PMU_INTEL)
 147                 pmu_alias_table = pmu_intel_alias_table;
 148         else
 149                 return (name);
 150
 151         for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++)
 152                 if (strcasecmp(name, pa->pa_alias) == 0)
 153                         return (pa->pa_name);
 154
 155         return (name);
 156 }
 157 #elif defined(__powerpc64__)
 158
 159 static const char *
 160 pmu_alias_get(const char *name)
 161 {
 162         return (name);
 163 }
 164
 165 #elif defined(__aarch64__)
 166
 167 static struct pmu_alias pmu_armv8_alias_table[] = {
 168         {"UNHALTED_CORE_CYCLES", "CPU_CYCLES"},
 169         {"UNHALTED-CORE-CYCLES", "CPU_CYCLES"},
 170         {"LLC_MISSES", "LL_CACHE_MISS_RD"},
 171         {"LLC-MISSES", "LL_CACHE_MISS_RD"},
 172         {"LLC_REFERENCE", "LL_CACHE_RD"},
 173         {"LLC-REFERENCE", "LL_CACHE_RD"},
 174         {"BRANCH_INSTRUCTION_RETIRED", "BR_RETIRED"},
 175         {"BRANCH-INSTRUCTION-RETIRED", "BR_RETIRED"},
 176         {"BRANCH_MISSES_RETIRED", "BR_MIS_PRED_RETIRED"},
 177         {"BRANCH-MISSES-RETIRED", "BR_MIS_PRED_RETIRED"},
 178         {"unhalted-cycles", "CPU_CYCLES"},
 179         {"instructions", "INST_RETIRED",},
 180         {"branch-mispredicts", "BR_MIS_PRED_RETIRED"},
 181         {"branches", "BR_RETIRED"},
 182         {"interrupts", "EXC_IRQ"},
 183         {NULL, NULL},
 184 };
 185
 186 static const char *
 187 pmu_alias_get(const char *name)
 188 {
 189         struct pmu_alias *pa;
 190
 191         for (pa = pmu_armv8_alias_table; pa->pa_alias != NULL; pa++)
 192                 if (strcasecmp(name, pa->pa_alias) == 0)
 193                         return (pa->pa_name);
 194
 195         return (name);
 196 }
 197
 198 #else
 199
 200 static const char *
 201 pmu_alias_get(const char *name)
 202 {
 203
 204         return (name);
 205 }
 206 #endif
 207
 208 struct pmu_event_desc {
 209         uint64_t ped_period;
 210         uint64_t ped_offcore_rsp;
 211         uint64_t ped_l3_thread;
 212         uint64_t ped_l3_slice;
 213         uint32_t ped_event;
 214         uint32_t ped_frontend;
 215         uint32_t ped_ldlat;
 216         uint32_t ped_config1;
 217         int16_t ped_umask;
 218         uint8_t ped_cmask;
 219         uint8_t ped_any;
 220         uint8_t ped_inv;
 221         uint8_t ped_edge;
 222         uint8_t ped_fc_mask;
 223         uint8_t ped_ch_mask;
 224 };
 225
 226 static const struct pmu_events_map *
 227 pmu_events_map_get(const char *cpuid)
 228 {
 229         regex_t re;
 230         regmatch_t pmatch[1];
 231         char buf[PMC_CPUID_LEN];
 232         size_t s = sizeof(buf);
 233         int match;
 234         const struct pmu_events_map *pme;
 235
 236         if (cpuid != NULL) {
 237                 strlcpy(buf, cpuid, s);
 238         } else {
 239                 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 240                     (void *)NULL, 0) == -1)
 241                         return (NULL);
 242         }
 243         for (pme = pmu_events_map; pme->cpuid != NULL; pme++) {
 244                 if (regcomp(&re, pme->cpuid, REG_EXTENDED) != 0) {
 245                         printf("regex '%s' failed to compile, ignoring\n",
 246                             pme->cpuid);
 247                         continue;
 248                 }
 249                 match = regexec(&re, buf, 1, pmatch, 0);
 250                 regfree(&re);
 251                 if (match == 0) {
 252                         if (pmatch[0].rm_so == 0 && (buf[pmatch[0].rm_eo] == 0
 253                             || buf[pmatch[0].rm_eo] == '-'))
 254                                 return (pme);
 255                 }
 256         }
 257         return (NULL);
 258 }
 259
 260 static const struct pmu_event *
 261 pmu_event_get(const char *cpuid, const char *event_name, int *idx)
 262 {
 263         const struct pmu_events_map *pme;
 264         const struct pmu_event *pe;
 265         int i;
 266
 267         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 268                 return (NULL);
 269         for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
 270                 if (pe->name == NULL)
 271                         continue;
 272                 if (strcasecmp(pe->name, event_name) == 0) {
 273                         if (idx)
 274                                 *idx = i;
 275                         return (pe);
 276                 }
 277         }
 278         return (NULL);
 279 }
 280
 281 int
 282 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
 283 {
 284         int idx;
 285         const char *realname;
 286
 287         realname = pmu_alias_get(event);
 288         if (pmu_event_get(cpuid, realname, &idx) == NULL)
 289                 return (-1);
 290         return (idx);
 291 }
 292
 293 const char *
 294 pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
 295 {
 296         const struct pmu_events_map *pme;
 297
 298         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 299                 return (NULL);
 300         assert(pme->table[idx].name);
 301         return (pme->table[idx].name);
 302 }
 303
 304 static int
 305 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
 306 {
 307         char *event;
 308         char *kvp, *key, *value, *r;
 309         char *debug;
 310
 311         if ((event = strdup(eventin)) == NULL)
 312                 return (ENOMEM);
 313         r = event;
 314         bzero(ped, sizeof(*ped));
 315         ped->ped_period = DEFAULT_SAMPLE_COUNT;
 316         ped->ped_umask = -1;
 317         while ((kvp = strsep(&event, ",")) != NULL) {
 318                 key = strsep(&kvp, "=");
 319                 if (key == NULL)
 320                         abort();
 321                 value = kvp;
 322                 if (strcmp(key, "umask") == 0)
 323                         ped->ped_umask = strtol(value, NULL, 16);
 324                 else if (strcmp(key, "event") == 0)
 325                         ped->ped_event = strtol(value, NULL, 16);
 326                 else if (strcmp(key, "period") == 0)
 327                         ped->ped_period = strtol(value, NULL, 10);
 328                 else if (strcmp(key, "offcore_rsp") == 0)
 329                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 330                 else if (strcmp(key, "any") == 0)
 331                         ped->ped_any = strtol(value, NULL, 10);
 332                 else if (strcmp(key, "cmask") == 0)
 333                         ped->ped_cmask = strtol(value, NULL, 10);
 334                 else if (strcmp(key, "inv") == 0)
 335                         ped->ped_inv = strtol(value, NULL, 10);
 336                 else if (strcmp(key, "edge") == 0)
 337                         ped->ped_edge = strtol(value, NULL, 10);
 338                 else if (strcmp(key, "frontend") == 0)
 339                         ped->ped_frontend = strtol(value, NULL, 16);
 340                 else if (strcmp(key, "ldlat") == 0)
 341                         ped->ped_ldlat = strtol(value, NULL, 16);
 342                 else if (strcmp(key, "fc_mask") == 0)
 343                         ped->ped_fc_mask = strtol(value, NULL, 16);
 344                 else if (strcmp(key, "ch_mask") == 0)
 345                         ped->ped_ch_mask = strtol(value, NULL, 16);
 346                 else if (strcmp(key, "config1") == 0)
 347                         ped->ped_config1 = strtol(value, NULL, 16);
 348                 else if (strcmp(key, "l3_thread_mask") == 0)
 349                         ped->ped_l3_thread = strtol(value, NULL, 16);
 350                 else if (strcmp(key, "l3_slice_mask") == 0)
 351                         ped->ped_l3_slice = strtol(value, NULL, 16);
 352                 else {
 353                         debug = getenv("PMUDEBUG");
 354                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 355                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 356                 }
 357         }
 358         free(r);
 359         return (0);
 360 }
 361
 362 uint64_t
 363 pmc_pmu_sample_rate_get(const char *event_name)
 364 {
 365         const struct pmu_event *pe;
 366         struct pmu_event_desc ped;
 367
 368         event_name = pmu_alias_get(event_name);
 369         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 370                 return (DEFAULT_SAMPLE_COUNT);
 371         if (pe->event == NULL)
 372                 return (DEFAULT_SAMPLE_COUNT);
 373         if (pmu_parse_event(&ped, pe->event))
 374                 return (DEFAULT_SAMPLE_COUNT);
 375         return (ped.ped_period);
 376 }
 377
 378 int
 379 pmc_pmu_enabled(void)
 380 {
 381
 382         return (pmu_events_map_get(NULL) != NULL);
 383 }
 384
 385 void
 386 pmc_pmu_print_counters(const char *event_name)
 387 {
 388         const struct pmu_events_map *pme;
 389         const struct pmu_event *pe;
 390         struct pmu_event_desc ped;
 391         char *debug;
 392         int do_debug;
 393
 394         debug = getenv("PMUDEBUG");
 395         do_debug = 0;
 396
 397         if (debug != NULL && strcmp(debug, "true") == 0)
 398                 do_debug = 1;
 399         if ((pme = pmu_events_map_get(NULL)) == NULL)
 400                 return;
 401         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 402                 if (pe->name == NULL)
 403                         continue;
 404                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 405                         continue;
 406                 printf("\t%s\n", pe->name);
 407                 if (do_debug)
 408                         pmu_parse_event(&ped, pe->event);
 409         }
 410 }
 411
 412 void
 413 pmc_pmu_print_counter_desc(const char *ev)
 414 {
 415         const struct pmu_events_map *pme;
 416         const struct pmu_event *pe;
 417
 418         if ((pme = pmu_events_map_get(NULL)) == NULL)
 419                 return;
 420         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 421                 if (pe->name == NULL)
 422                         continue;
 423                 if (strcasestr(pe->name, ev) != NULL &&
 424                     pe->desc != NULL)
 425                         printf("%s:\t%s\n", pe->name, pe->desc);
 426         }
 427 }
 428
 429 void
 430 pmc_pmu_print_counter_desc_long(const char *ev)
 431 {
 432         const struct pmu_events_map *pme;
 433         const struct pmu_event *pe;
 434
 435         if ((pme = pmu_events_map_get(NULL)) == NULL)
 436                 return;
 437         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 438                 if (pe->name == NULL)
 439                         continue;
 440                 if (strcasestr(pe->name, ev) != NULL) {
 441                         if (pe->long_desc != NULL)
 442                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 443                         else if (pe->desc != NULL)
 444                                 printf("%s:\t%s\n", pe->name, pe->desc);
 445                 }
 446         }
 447 }
 448
 449 void
 450 pmc_pmu_print_counter_full(const char *ev)
 451 {
 452         const struct pmu_events_map *pme;
 453         const struct pmu_event *pe;
 454
 455         if ((pme = pmu_events_map_get(NULL)) == NULL)
 456                 return;
 457         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 458                 if (pe->name == NULL)
 459                         continue;
 460                 if (strcasestr(pe->name, ev) == NULL)
 461                         continue;
 462                 printf("name: %s\n", pe->name);
 463                 if (pe->long_desc != NULL)
 464                         printf("desc: %s\n", pe->long_desc);
 465                 else if (pe->desc != NULL)
 466                         printf("desc: %s\n", pe->desc);
 467                 if (pe->event != NULL)
 468                         printf("event: %s\n", pe->event);
 469                 if (pe->topic != NULL)
 470                         printf("topic: %s\n", pe->topic);
 471                 if (pe->pmu != NULL)
 472                         printf("pmu: %s\n", pe->pmu);
 473                 if (pe->unit != NULL)
 474                         printf("unit: %s\n", pe->unit);
 475                 if (pe->perpkg != NULL)
 476                         printf("perpkg: %s\n", pe->perpkg);
 477                 if (pe->metric_expr != NULL)
 478                         printf("metric_expr: %s\n", pe->metric_expr);
 479                 if (pe->metric_name != NULL)
 480                         printf("metric_name: %s\n", pe->metric_name);
 481                 if (pe->metric_group != NULL)
 482                         printf("metric_group: %s\n", pe->metric_group);
 483         }
 484 }
 485
 486 #if defined(__amd64__) || defined(__i386__)
 487 static int
 488 pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 489         struct pmu_event_desc *ped)
 490 {
 491         struct pmc_md_amd_op_pmcallocate *amd;
 492         const struct pmu_event *pe;
 493         int idx = -1;
 494
 495         amd = &pm->pm_md.pm_amd;
 496         if (ped->ped_umask > 0) {
 497                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 498                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 499         }
 500         pm->pm_class = PMC_CLASS_K8;
 501         pe = pmu_event_get(NULL, event_name, &idx);
 502
 503         if (strcmp("l3cache", pe->topic) == 0){
 504                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 505                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE;
 506                 amd->pm_amd_config |= AMD_PMC_TO_L3SLICE(ped->ped_l3_slice);
 507                 amd->pm_amd_config |= AMD_PMC_TO_L3CORE(ped->ped_l3_thread);
 508         }
 509         else if (strcmp("data fabric", pe->topic) == 0){
 510
 511                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK_DF(ped->ped_event);
 512                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC;
 513         }
 514         else{
 515                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 516                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE;
 517                 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 518                         (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 519                         (PMC_CAP_USER|PMC_CAP_SYSTEM))
 520                         amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 521                 else if (pm->pm_caps & PMC_CAP_USER)
 522                         amd->pm_amd_config |= AMD_PMC_USR;
 523                 else if (pm->pm_caps & PMC_CAP_SYSTEM)
 524                         amd->pm_amd_config |= AMD_PMC_OS;
 525                 if (ped->ped_edge)
 526                         amd->pm_amd_config |= AMD_PMC_EDGE;
 527                 if (ped->ped_inv)
 528                         amd->pm_amd_config |= AMD_PMC_INVERT;
 529                 if (pm->pm_caps & PMC_CAP_INTERRUPT)
 530                         amd->pm_amd_config |= AMD_PMC_INT;
 531         }
 532         return (0);
 533 }
 534
 535 static int
 536 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 537         struct pmu_event_desc *ped)
 538 {
 539         struct pmc_md_iap_op_pmcallocate *iap;
 540
 541         iap = &pm->pm_md.pm_iap;
 542         if (strcasestr(event_name, "UNC_") == event_name ||
 543             strcasestr(event_name, "uncore") != NULL) {
 544                 pm->pm_class = PMC_CLASS_UCP;
 545                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 546         } else if (ped->ped_event == 0x0) {
 547                 pm->pm_class = PMC_CLASS_IAF;
 548         } else {
 549                 pm->pm_class = PMC_CLASS_IAP;
 550                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 551         }
 552         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 553         if (ped->ped_umask > 0)
 554                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 555         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 556         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 557
 558         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 559                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 560                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 561                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 562         else if (pm->pm_caps & PMC_CAP_USER)
 563                 iap->pm_iap_config |= IAP_USR;
 564         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 565                 iap->pm_iap_config |= IAP_OS;
 566         if (ped->ped_edge)
 567                 iap->pm_iap_config |= IAP_EDGE;
 568         if (ped->ped_any)
 569                 iap->pm_iap_config |= IAP_ANY;
 570         if (ped->ped_inv)
 571                 iap->pm_iap_config |= IAP_INV;
 572         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 573                 iap->pm_iap_config |= IAP_INT;
 574         return (0);
 575 }
 576
 577 int
 578 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 579 {
 580         const struct pmu_event *pe;
 581         struct pmu_event_desc ped;
 582         pmu_mfr_t mfr;
 583         int idx = -1;
 584
 585         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 586                 return (ENOENT);
 587
 588         bzero(&pm->pm_md, sizeof(pm->pm_md));
 589         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 590         event_name = pmu_alias_get(event_name);
 591         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 592                 return (ENOENT);
 593         assert(idx >= 0);
 594         pm->pm_ev = idx;
 595
 596         if (pe->event == NULL)
 597                 return (ENOENT);
 598         if (pmu_parse_event(&ped, pe->event))
 599                 return (ENOENT);
 600
 601         if (mfr == PMU_INTEL)
 602                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 603         else
 604                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 605 }
 606
 607 #elif defined(__powerpc64__)
 608
 609 int
 610 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 611 {
 612         const struct pmu_event *pe;
 613         struct pmu_event_desc ped;
 614         int idx = -1;
 615
 616         bzero(&pm->pm_md, sizeof(pm->pm_md));
 617         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 618         event_name = pmu_alias_get(event_name);
 619
 620         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 621                 return (ENOENT);
 622         if (pe->event == NULL)
 623                 return (ENOENT);
 624         if (pmu_parse_event(&ped, pe->event))
 625                 return (ENOENT);
 626
 627         assert(ped.ped_event >= 0);
 628         pm->pm_ev = idx;
 629         pm->pm_md.pm_event = ped.ped_event;
 630         pm->pm_class = PMC_CLASS_POWER8;
 631         return (0);
 632 }
 633
 634 #elif defined(__aarch64__)
 635
 636 int
 637 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 638 {
 639         const struct pmu_event *pe;
 640         struct pmu_event_desc ped;
 641         int idx = -1;
 642
 643         event_name = pmu_alias_get(event_name);
 644         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 645                 return (ENOENT);
 646         if (pe->event == NULL)
 647                 return (ENOENT);
 648         if (pmu_parse_event(&ped, pe->event))
 649                 return (ENOENT);
 650
 651         assert(idx >= 0);
 652         pm->pm_ev = idx;
 653         pm->pm_md.pm_md_config = ped.ped_event;
 654         pm->pm_md.pm_md_flags |= PM_MD_RAW_EVENT;
 655         pm->pm_class = PMC_CLASS_ARMV8;
 656         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 657
 658         return (0);
 659 }
 660
 661 #else
 662
 663 int
 664 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 665 {
 666         return (EOPNOTSUPP);
 667 }
 668 #endif