ceph/src/spdk/dpdk/app/test/test_power_acpi_cpufreq.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdint.h>
   7 #include <unistd.h>
   8 #include <limits.h>
   9 #include <string.h>
  10 #include <inttypes.h>
  11
  12 #include "test.h"
  13
  14 #ifndef RTE_LIBRTE_POWER
  15
  16 static int
  17 test_power_acpi_cpufreq(void)
  18 {
  19         printf("Power management library not supported, skipping test\n");
  20         return TEST_SKIPPED;
  21 }
  22
  23 static int
  24 test_power_acpi_caps(void)
  25 {
  26         printf("Power management library not supported, skipping test\n");
  27         return TEST_SKIPPED;
  28 }
  29
  30 #else
  31 #include <rte_power.h>
  32
  33 #define TEST_POWER_LCORE_ID      2U
  34 #define TEST_POWER_LCORE_INVALID ((unsigned)RTE_MAX_LCORE)
  35 #define TEST_POWER_FREQS_NUM_MAX ((unsigned)RTE_MAX_LCORE_FREQS)
  36
  37 #define TEST_POWER_SYSFILE_CUR_FREQ \
  38         "/sys/devices/system/cpu/cpu%u/cpufreq/cpuinfo_cur_freq"
  39
  40 static uint32_t total_freq_num;
  41 static uint32_t freqs[TEST_POWER_FREQS_NUM_MAX];
  42
  43 static int
  44 check_cur_freq(unsigned lcore_id, uint32_t idx)
  45 {
  46 #define TEST_POWER_CONVERT_TO_DECIMAL 10
  47         FILE *f;
  48         char fullpath[PATH_MAX];
  49         char buf[BUFSIZ];
  50         uint32_t cur_freq;
  51         int ret = -1;
  52
  53         if (snprintf(fullpath, sizeof(fullpath),
  54                 TEST_POWER_SYSFILE_CUR_FREQ, lcore_id) < 0) {
  55                 return 0;
  56         }
  57         f = fopen(fullpath, "r");
  58         if (f == NULL) {
  59                 return 0;
  60         }
  61         if (fgets(buf, sizeof(buf), f) == NULL) {
  62                 goto fail_get_cur_freq;
  63         }
  64         cur_freq = strtoul(buf, NULL, TEST_POWER_CONVERT_TO_DECIMAL);
  65         ret = (freqs[idx] == cur_freq ? 0 : -1);
  66
  67 fail_get_cur_freq:
  68         fclose(f);
  69
  70         return ret;
  71 }
  72
  73 /* Check rte_power_freqs() */
  74 static int
  75 check_power_freqs(void)
  76 {
  77         uint32_t ret;
  78
  79         total_freq_num = 0;
  80         memset(freqs, 0, sizeof(freqs));
  81
  82         /* test with an invalid lcore id */
  83         ret = rte_power_freqs(TEST_POWER_LCORE_INVALID, freqs,
  84                                         TEST_POWER_FREQS_NUM_MAX);
  85         if (ret > 0) {
  86                 printf("Unexpectedly get available freqs successfully on "
  87                                 "lcore %u\n", TEST_POWER_LCORE_INVALID);
  88                 return -1;
  89         }
  90
  91         /* test with NULL buffer to save available freqs */
  92         ret = rte_power_freqs(TEST_POWER_LCORE_ID, NULL,
  93                                 TEST_POWER_FREQS_NUM_MAX);
  94         if (ret > 0) {
  95                 printf("Unexpectedly get available freqs successfully with "
  96                         "NULL buffer on lcore %u\n", TEST_POWER_LCORE_ID);
  97                 return -1;
  98         }
  99
 100         /* test of getting zero number of freqs */
 101         ret = rte_power_freqs(TEST_POWER_LCORE_ID, freqs, 0);
 102         if (ret > 0) {
 103                 printf("Unexpectedly get available freqs successfully with "
 104                         "zero buffer size on lcore %u\n", TEST_POWER_LCORE_ID);
 105                 return -1;
 106         }
 107
 108         /* test with all valid input parameters */
 109         ret = rte_power_freqs(TEST_POWER_LCORE_ID, freqs,
 110                                 TEST_POWER_FREQS_NUM_MAX);
 111         if (ret == 0 || ret > TEST_POWER_FREQS_NUM_MAX) {
 112                 printf("Fail to get available freqs on lcore %u\n",
 113                                                 TEST_POWER_LCORE_ID);
 114                 return -1;
 115         }
 116
 117         /* Save the total number of available freqs */
 118         total_freq_num = ret;
 119
 120         return 0;
 121 }
 122
 123 /* Check rte_power_get_freq() */
 124 static int
 125 check_power_get_freq(void)
 126 {
 127         int ret;
 128         uint32_t count;
 129
 130         /* test with an invalid lcore id */
 131         count = rte_power_get_freq(TEST_POWER_LCORE_INVALID);
 132         if (count < TEST_POWER_FREQS_NUM_MAX) {
 133                 printf("Unexpectedly get freq index successfully on "
 134                                 "lcore %u\n", TEST_POWER_LCORE_INVALID);
 135                 return -1;
 136         }
 137
 138         count = rte_power_get_freq(TEST_POWER_LCORE_ID);
 139         if (count >= TEST_POWER_FREQS_NUM_MAX) {
 140                 printf("Fail to get the freq index on lcore %u\n",
 141                                                 TEST_POWER_LCORE_ID);
 142                 return -1;
 143         }
 144
 145         /* Check the current frequency */
 146         ret = check_cur_freq(TEST_POWER_LCORE_ID, count);
 147         if (ret < 0)
 148                 return -1;
 149
 150         return 0;
 151 }
 152
 153 /* Check rte_power_set_freq() */
 154 static int
 155 check_power_set_freq(void)
 156 {
 157         int ret;
 158
 159         /* test with an invalid lcore id */
 160         ret = rte_power_set_freq(TEST_POWER_LCORE_INVALID, 0);
 161         if (ret >= 0) {
 162                 printf("Unexpectedly set freq index successfully on "
 163                                 "lcore %u\n", TEST_POWER_LCORE_INVALID);
 164                 return -1;
 165         }
 166
 167         /* test with an invalid freq index */
 168         ret = rte_power_set_freq(TEST_POWER_LCORE_ID,
 169                                 TEST_POWER_FREQS_NUM_MAX);
 170         if (ret >= 0) {
 171                 printf("Unexpectedly set an invalid freq index (%u)"
 172                         "successfully on lcore %u\n", TEST_POWER_FREQS_NUM_MAX,
 173                                                         TEST_POWER_LCORE_ID);
 174                 return -1;
 175         }
 176
 177         /**
 178          * test with an invalid freq index which is right one bigger than
 179          * total number of freqs
 180          */
 181         ret = rte_power_set_freq(TEST_POWER_LCORE_ID, total_freq_num);
 182         if (ret >= 0) {
 183                 printf("Unexpectedly set an invalid freq index (%u)"
 184                         "successfully on lcore %u\n", total_freq_num,
 185                                                 TEST_POWER_LCORE_ID);
 186                 return -1;
 187         }
 188         ret = rte_power_set_freq(TEST_POWER_LCORE_ID, total_freq_num - 1);
 189         if (ret < 0) {
 190                 printf("Fail to set freq index on lcore %u\n",
 191                                         TEST_POWER_LCORE_ID);
 192                 return -1;
 193         }
 194
 195         /* Check the current frequency */
 196         ret = check_cur_freq(TEST_POWER_LCORE_ID, total_freq_num - 1);
 197         if (ret < 0)
 198                 return -1;
 199
 200         return 0;
 201 }
 202
 203 /* Check rte_power_freq_down() */
 204 static int
 205 check_power_freq_down(void)
 206 {
 207         int ret;
 208
 209         /* test with an invalid lcore id */
 210         ret = rte_power_freq_down(TEST_POWER_LCORE_INVALID);
 211         if (ret >= 0) {
 212                 printf("Unexpectedly scale down successfully the freq on "
 213                                 "lcore %u\n", TEST_POWER_LCORE_INVALID);
 214                 return -1;
 215         }
 216
 217         /* Scale down to min and then scale down one step */
 218         ret = rte_power_freq_min(TEST_POWER_LCORE_ID);
 219         if (ret < 0) {
 220                 printf("Fail to scale down the freq to min on lcore %u\n",
 221                                                         TEST_POWER_LCORE_ID);
 222                 return -1;
 223         }
 224         ret = rte_power_freq_down(TEST_POWER_LCORE_ID);
 225         if (ret < 0) {
 226                 printf("Fail to scale down the freq on lcore %u\n",
 227                                                 TEST_POWER_LCORE_ID);
 228                 return -1;
 229         }
 230
 231         /* Check the current frequency */
 232         ret = check_cur_freq(TEST_POWER_LCORE_ID, total_freq_num - 1);
 233         if (ret < 0)
 234                 return -1;
 235
 236         /* Scale up to max and then scale down one step */
 237         ret = rte_power_freq_max(TEST_POWER_LCORE_ID);
 238         if (ret < 0) {
 239                 printf("Fail to scale up the freq to max on lcore %u\n",
 240                                                         TEST_POWER_LCORE_ID);
 241                 return -1;
 242         }
 243         ret = rte_power_freq_down(TEST_POWER_LCORE_ID);
 244         if (ret < 0) {
 245                 printf("Fail to scale down the freq on lcore %u\n",
 246                                                 TEST_POWER_LCORE_ID);
 247                 return -1;
 248         }
 249
 250         /* Check the current frequency */
 251         ret = check_cur_freq(TEST_POWER_LCORE_ID, 1);
 252         if (ret < 0)
 253                 return -1;
 254
 255         return 0;
 256 }
 257
 258 /* Check rte_power_freq_up() */
 259 static int
 260 check_power_freq_up(void)
 261 {
 262         int ret;
 263
 264         /* test with an invalid lcore id */
 265         ret = rte_power_freq_up(TEST_POWER_LCORE_INVALID);
 266         if (ret >= 0) {
 267                 printf("Unexpectedly scale up successfully the freq on %u\n",
 268                                                 TEST_POWER_LCORE_INVALID);
 269                 return -1;
 270         }
 271
 272         /* Scale down to min and then scale up one step */
 273         ret = rte_power_freq_min(TEST_POWER_LCORE_ID);
 274         if (ret < 0) {
 275                 printf("Fail to scale down the freq to min on lcore %u\n",
 276                                                         TEST_POWER_LCORE_ID);
 277                 return -1;
 278         }
 279         ret = rte_power_freq_up(TEST_POWER_LCORE_ID);
 280         if (ret < 0) {
 281                 printf("Fail to scale up the freq on lcore %u\n",
 282                                                 TEST_POWER_LCORE_ID);
 283                 return -1;
 284         }
 285
 286         /* Check the current frequency */
 287         ret = check_cur_freq(TEST_POWER_LCORE_ID, total_freq_num - 2);
 288         if (ret < 0)
 289                 return -1;
 290
 291         /* Scale up to max and then scale up one step */
 292         ret = rte_power_freq_max(TEST_POWER_LCORE_ID);
 293         if (ret < 0) {
 294                 printf("Fail to scale up the freq to max on lcore %u\n",
 295                                                 TEST_POWER_LCORE_ID);
 296                 return -1;
 297         }
 298         ret = rte_power_freq_up(TEST_POWER_LCORE_ID);
 299         if (ret < 0) {
 300                 printf("Fail to scale up the freq on lcore %u\n",
 301                                                 TEST_POWER_LCORE_ID);
 302                 return -1;
 303         }
 304
 305         /* Check the current frequency */
 306         ret = check_cur_freq(TEST_POWER_LCORE_ID, 0);
 307         if (ret < 0)
 308                 return -1;
 309
 310         return 0;
 311 }
 312
 313 /* Check rte_power_freq_max() */
 314 static int
 315 check_power_freq_max(void)
 316 {
 317         int ret;
 318
 319         /* test with an invalid lcore id */
 320         ret = rte_power_freq_max(TEST_POWER_LCORE_INVALID);
 321         if (ret >= 0) {
 322                 printf("Unexpectedly scale up successfully the freq to max on "
 323                                 "lcore %u\n", TEST_POWER_LCORE_INVALID);
 324                 return -1;
 325         }
 326         ret = rte_power_freq_max(TEST_POWER_LCORE_ID);
 327         if (ret < 0) {
 328                 printf("Fail to scale up the freq to max on lcore %u\n",
 329                                                 TEST_POWER_LCORE_ID);
 330                 return -1;
 331         }
 332
 333         /* Check the current frequency */
 334         ret = check_cur_freq(TEST_POWER_LCORE_ID, 0);
 335         if (ret < 0)
 336                 return -1;
 337
 338         return 0;
 339 }
 340
 341 /* Check rte_power_freq_min() */
 342 static int
 343 check_power_freq_min(void)
 344 {
 345         int ret;
 346
 347         /* test with an invalid lcore id */
 348         ret = rte_power_freq_min(TEST_POWER_LCORE_INVALID);
 349         if (ret >= 0) {
 350                 printf("Unexpectedly scale down successfully the freq to min "
 351                                 "on lcore %u\n", TEST_POWER_LCORE_INVALID);
 352                 return -1;
 353         }
 354         ret = rte_power_freq_min(TEST_POWER_LCORE_ID);
 355         if (ret < 0) {
 356                 printf("Fail to scale down the freq to min on lcore %u\n",
 357                                                         TEST_POWER_LCORE_ID);
 358                 return -1;
 359         }
 360
 361         /* Check the current frequency */
 362         ret = check_cur_freq(TEST_POWER_LCORE_ID, total_freq_num - 1);
 363         if (ret < 0)
 364                 return -1;
 365
 366         return 0;
 367 }
 368
 369 static int
 370 test_power_acpi_cpufreq(void)
 371 {
 372         int ret = -1;
 373         enum power_management_env env;
 374
 375         /* Test initialisation of a valid lcore */
 376         ret = rte_power_init(TEST_POWER_LCORE_ID);
 377         if (ret < 0) {
 378                 printf("Cannot initialise power management for lcore %u, this "
 379                                 "may occur if environment is not configured "
 380                                 "correctly(APCI cpufreq) or operating in another valid "
 381                                 "Power management environment\n",
 382                                 TEST_POWER_LCORE_ID);
 383                 rte_power_unset_env();
 384                 return TEST_SKIPPED;
 385         }
 386
 387         /* Test environment configuration */
 388         env = rte_power_get_env();
 389         if ((env != PM_ENV_ACPI_CPUFREQ) && (env != PM_ENV_PSTATE_CPUFREQ)) {
 390                 printf("Unexpectedly got an environment other than ACPI/PSTATE\n");
 391                 goto fail_all;
 392         }
 393
 394         /* verify that function pointers are not NULL */
 395         if (rte_power_freqs == NULL) {
 396                 printf("rte_power_freqs should not be NULL, environment has not been "
 397                                 "initialised\n");
 398                 goto fail_all;
 399         }
 400         if (rte_power_get_freq == NULL) {
 401                 printf("rte_power_get_freq should not be NULL, environment has not "
 402                                 "been initialised\n");
 403                 goto fail_all;
 404         }
 405         if (rte_power_set_freq == NULL) {
 406                 printf("rte_power_set_freq should not be NULL, environment has not "
 407                                 "been initialised\n");
 408                 goto fail_all;
 409         }
 410         if (rte_power_freq_up == NULL) {
 411                 printf("rte_power_freq_up should not be NULL, environment has not "
 412                                 "been initialised\n");
 413                 goto fail_all;
 414         }
 415         if (rte_power_freq_down == NULL) {
 416                 printf("rte_power_freq_down should not be NULL, environment has not "
 417                                 "been initialised\n");
 418                 goto fail_all;
 419         }
 420         if (rte_power_freq_max == NULL) {
 421                 printf("rte_power_freq_max should not be NULL, environment has not "
 422                                 "been initialised\n");
 423                 goto fail_all;
 424         }
 425         if (rte_power_freq_min == NULL) {
 426                 printf("rte_power_freq_min should not be NULL, environment has not "
 427                                 "been initialised\n");
 428                 goto fail_all;
 429         }
 430
 431         ret = rte_power_exit(TEST_POWER_LCORE_ID);
 432         if (ret < 0) {
 433                 printf("Cannot exit power management for lcore %u\n",
 434                                                 TEST_POWER_LCORE_ID);
 435                 rte_power_unset_env();
 436                 return -1;
 437         }
 438
 439         /* test of init power management for an invalid lcore */
 440         ret = rte_power_init(TEST_POWER_LCORE_INVALID);
 441         if (ret == 0) {
 442                 printf("Unexpectedly initialise power management successfully "
 443                                 "for lcore %u\n", TEST_POWER_LCORE_INVALID);
 444                 rte_power_unset_env();
 445                 return -1;
 446         }
 447
 448         /* Test initialisation of a valid lcore */
 449         ret = rte_power_init(TEST_POWER_LCORE_ID);
 450         if (ret < 0) {
 451                 printf("Cannot initialise power management for lcore %u, this "
 452                                 "may occur if environment is not configured "
 453                                 "correctly(APCI cpufreq) or operating in another valid "
 454                                 "Power management environment\n", TEST_POWER_LCORE_ID);
 455                 rte_power_unset_env();
 456                 return TEST_SKIPPED;
 457         }
 458
 459         /**
 460          * test of initialising power management for the lcore which has
 461          * been initialised
 462          */
 463         ret = rte_power_init(TEST_POWER_LCORE_ID);
 464         if (ret == 0) {
 465                 printf("Unexpectedly init successfully power twice on "
 466                                         "lcore %u\n", TEST_POWER_LCORE_ID);
 467                 goto fail_all;
 468         }
 469
 470         ret = check_power_freqs();
 471         if (ret < 0)
 472                 goto fail_all;
 473
 474         if (total_freq_num < 2) {
 475                 rte_power_exit(TEST_POWER_LCORE_ID);
 476                 printf("Frequency can not be changed due to CPU itself\n");
 477                 rte_power_unset_env();
 478                 return 0;
 479         }
 480
 481         ret = check_power_get_freq();
 482         if (ret < 0)
 483                 goto fail_all;
 484
 485         ret = check_power_set_freq();
 486         if (ret < 0)
 487                 goto fail_all;
 488
 489         ret = check_power_freq_down();
 490         if (ret < 0)
 491                 goto fail_all;
 492
 493         ret = check_power_freq_up();
 494         if (ret < 0)
 495                 goto fail_all;
 496
 497         ret = check_power_freq_max();
 498         if (ret < 0)
 499                 goto fail_all;
 500
 501         ret = check_power_freq_min();
 502         if (ret < 0)
 503                 goto fail_all;
 504
 505         ret = rte_power_exit(TEST_POWER_LCORE_ID);
 506         if (ret < 0) {
 507                 printf("Cannot exit power management for lcore %u\n",
 508                                                 TEST_POWER_LCORE_ID);
 509                 rte_power_unset_env();
 510                 return -1;
 511         }
 512
 513         /**
 514          * test of exiting power management for the lcore which has been exited
 515          */
 516         ret = rte_power_exit(TEST_POWER_LCORE_ID);
 517         if (ret == 0) {
 518                 printf("Unexpectedly exit successfully power management twice "
 519                                         "on lcore %u\n", TEST_POWER_LCORE_ID);
 520                 rte_power_unset_env();
 521                 return -1;
 522         }
 523
 524         /* test of exit power management for an invalid lcore */
 525         ret = rte_power_exit(TEST_POWER_LCORE_INVALID);
 526         if (ret == 0) {
 527                 printf("Unpectedly exit power management successfully for "
 528                                 "lcore %u\n", TEST_POWER_LCORE_INVALID);
 529                 rte_power_unset_env();
 530                 return -1;
 531         }
 532         rte_power_unset_env();
 533         return 0;
 534
 535 fail_all:
 536         rte_power_exit(TEST_POWER_LCORE_ID);
 537         rte_power_unset_env();
 538         return -1;
 539 }
 540
 541 static int
 542 test_power_acpi_caps(void)
 543 {
 544         struct rte_power_core_capabilities caps;
 545         int ret;
 546
 547         ret = rte_power_init(TEST_POWER_LCORE_ID);
 548         if (ret < 0) {
 549                 printf("Cannot initialise power management for lcore %u, this "
 550                         "may occur if environment is not configured "
 551                         "correctly(APCI cpufreq) or operating in another valid "
 552                         "Power management environment\n", TEST_POWER_LCORE_ID);
 553                 rte_power_unset_env();
 554                 return -1;
 555         }
 556
 557         ret = rte_power_get_capabilities(TEST_POWER_LCORE_ID, &caps);
 558         if (ret) {
 559                 printf("POWER: Error getting capabilities\n");
 560                 return -1;
 561         }
 562
 563         printf("POWER: Capabilities %"PRIx64"\n", caps.capabilities);
 564
 565         rte_power_unset_env();
 566         return 0;
 567 }
 568
 569 #endif
 570
 571 REGISTER_TEST_COMMAND(power_acpi_cpufreq_autotest, test_power_acpi_cpufreq);
 572 REGISTER_TEST_COMMAND(power_acpi_caps_autotest, test_power_acpi_caps);