drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c

   1 /*
   2  * Copyright 2019 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #include <linux/sort.h>
  25 #include "amdgpu.h"
  26 #include "umc_v6_7.h"
  27 #define MAX_UMC_POISON_POLLING_TIME_SYNC   20  //ms
  28
  29 #define MAX_UMC_HASH_STRING_SIZE  256
  30
  31 static int amdgpu_umc_convert_error_address(struct amdgpu_device *adev,
  32                                     struct ras_err_data *err_data, uint64_t err_addr,
  33                                     uint32_t ch_inst, uint32_t umc_inst)
  34 {
  35         switch (amdgpu_ip_version(adev, UMC_HWIP, 0)) {
  36         case IP_VERSION(6, 7, 0):
  37                 umc_v6_7_convert_error_address(adev,
  38                                 err_data, err_addr, ch_inst, umc_inst);
  39                 break;
  40         default:
  41                 dev_warn(adev->dev,
  42                          "UMC address to Physical address translation is not supported\n");
  43                 return AMDGPU_RAS_FAIL;
  44         }
  45
  46         return AMDGPU_RAS_SUCCESS;
  47 }
  48
  49 int amdgpu_umc_page_retirement_mca(struct amdgpu_device *adev,
  50                         uint64_t err_addr, uint32_t ch_inst, uint32_t umc_inst)
  51 {
  52         struct ras_err_data err_data;
  53         int ret;
  54
  55         ret = amdgpu_ras_error_data_init(&err_data);
  56         if (ret)
  57                 return ret;
  58
  59         err_data.err_addr =
  60                 kcalloc(adev->umc.max_ras_err_cnt_per_query,
  61                         sizeof(struct eeprom_table_record), GFP_KERNEL);
  62         if (!err_data.err_addr) {
  63                 dev_warn(adev->dev,
  64                         "Failed to alloc memory for umc error record in MCA notifier!\n");
  65                 ret = AMDGPU_RAS_FAIL;
  66                 goto out_fini_err_data;
  67         }
  68
  69         err_data.err_addr_len = adev->umc.max_ras_err_cnt_per_query;
  70
  71         /*
  72          * Translate UMC channel address to Physical address
  73          */
  74         ret = amdgpu_umc_convert_error_address(adev, &err_data, err_addr,
  75                                         ch_inst, umc_inst);
  76         if (ret)
  77                 goto out_free_err_addr;
  78
  79         if (amdgpu_bad_page_threshold != 0) {
  80                 amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
  81                                                 err_data.err_addr_cnt);
  82                 amdgpu_ras_save_bad_pages(adev, NULL);
  83         }
  84
  85 out_free_err_addr:
  86         kfree(err_data.err_addr);
  87
  88 out_fini_err_data:
  89         amdgpu_ras_error_data_fini(&err_data);
  90
  91         return ret;
  92 }
  93
  94 void amdgpu_umc_handle_bad_pages(struct amdgpu_device *adev,
  95                         void *ras_error_status)
  96 {
  97         struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
  98         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
  99         unsigned int error_query_mode;
 100         int ret = 0;
 101         unsigned long err_count;
 102
 103         amdgpu_ras_get_error_query_mode(adev, &error_query_mode);
 104
 105         mutex_lock(&con->page_retirement_lock);
 106         ret = amdgpu_dpm_get_ecc_info(adev, (void *)&(con->umc_ecc));
 107         if (ret == -EOPNOTSUPP &&
 108             error_query_mode == AMDGPU_RAS_DIRECT_ERROR_QUERY) {
 109                 if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
 110                     adev->umc.ras->ras_block.hw_ops->query_ras_error_count)
 111                     adev->umc.ras->ras_block.hw_ops->query_ras_error_count(adev, ras_error_status);
 112
 113                 if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
 114                     adev->umc.ras->ras_block.hw_ops->query_ras_error_address &&
 115                     adev->umc.max_ras_err_cnt_per_query) {
 116                         err_data->err_addr =
 117                                 kcalloc(adev->umc.max_ras_err_cnt_per_query,
 118                                         sizeof(struct eeprom_table_record), GFP_KERNEL);
 119
 120                         /* still call query_ras_error_address to clear error status
 121                          * even NOMEM error is encountered
 122                          */
 123                         if(!err_data->err_addr)
 124                                 dev_warn(adev->dev, "Failed to alloc memory for "
 125                                                 "umc error address record!\n");
 126                         else
 127                                 err_data->err_addr_len = adev->umc.max_ras_err_cnt_per_query;
 128
 129                         /* umc query_ras_error_address is also responsible for clearing
 130                          * error status
 131                          */
 132                         adev->umc.ras->ras_block.hw_ops->query_ras_error_address(adev, ras_error_status);
 133                 }
 134         } else if (error_query_mode == AMDGPU_RAS_FIRMWARE_ERROR_QUERY ||
 135             (!ret && error_query_mode == AMDGPU_RAS_DIRECT_ERROR_QUERY)) {
 136                 if (adev->umc.ras &&
 137                     adev->umc.ras->ecc_info_query_ras_error_count)
 138                     adev->umc.ras->ecc_info_query_ras_error_count(adev, ras_error_status);
 139
 140                 if (adev->umc.ras &&
 141                     adev->umc.ras->ecc_info_query_ras_error_address &&
 142                     adev->umc.max_ras_err_cnt_per_query) {
 143                         err_data->err_addr =
 144                                 kcalloc(adev->umc.max_ras_err_cnt_per_query,
 145                                         sizeof(struct eeprom_table_record), GFP_KERNEL);
 146
 147                         /* still call query_ras_error_address to clear error status
 148                          * even NOMEM error is encountered
 149                          */
 150                         if(!err_data->err_addr)
 151                                 dev_warn(adev->dev, "Failed to alloc memory for "
 152                                                 "umc error address record!\n");
 153                         else
 154                                 err_data->err_addr_len = adev->umc.max_ras_err_cnt_per_query;
 155
 156                         /* umc query_ras_error_address is also responsible for clearing
 157                          * error status
 158                          */
 159                         adev->umc.ras->ecc_info_query_ras_error_address(adev, ras_error_status);
 160                 }
 161         }
 162
 163         /* only uncorrectable error needs gpu reset */
 164         if (err_data->ue_count || err_data->de_count) {
 165                 err_count = err_data->ue_count + err_data->de_count;
 166                 if ((amdgpu_bad_page_threshold != 0) &&
 167                         err_data->err_addr_cnt) {
 168                         amdgpu_ras_add_bad_pages(adev, err_data->err_addr,
 169                                                 err_data->err_addr_cnt);
 170                         amdgpu_ras_save_bad_pages(adev, &err_count);
 171
 172                         amdgpu_dpm_send_hbm_bad_pages_num(adev, con->eeprom_control.ras_num_recs);
 173
 174                         if (con->update_channel_flag == true) {
 175                                 amdgpu_dpm_send_hbm_bad_channel_flag(adev, con->eeprom_control.bad_channel_bitmap);
 176                                 con->update_channel_flag = false;
 177                         }
 178                 }
 179         }
 180
 181         kfree(err_data->err_addr);
 182         err_data->err_addr = NULL;
 183
 184         mutex_unlock(&con->page_retirement_lock);
 185 }
 186
 187 static int amdgpu_umc_do_page_retirement(struct amdgpu_device *adev,
 188                 void *ras_error_status,
 189                 struct amdgpu_iv_entry *entry,
 190                 uint32_t reset)
 191 {
 192         struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
 193         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 194
 195         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
 196         amdgpu_umc_handle_bad_pages(adev, ras_error_status);
 197
 198         if (err_data->ue_count && reset) {
 199                 con->gpu_reset_flags |= reset;
 200                 amdgpu_ras_reset_gpu(adev);
 201         }
 202
 203         return AMDGPU_RAS_SUCCESS;
 204 }
 205
 206 int amdgpu_umc_bad_page_polling_timeout(struct amdgpu_device *adev,
 207                         uint32_t reset, uint32_t timeout_ms)
 208 {
 209         struct ras_err_data err_data;
 210         struct ras_common_if head = {
 211                 .block = AMDGPU_RAS_BLOCK__UMC,
 212         };
 213         struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head);
 214         uint32_t timeout = timeout_ms;
 215
 216         memset(&err_data, 0, sizeof(err_data));
 217         amdgpu_ras_error_data_init(&err_data);
 218
 219         do {
 220
 221                 amdgpu_umc_handle_bad_pages(adev, &err_data);
 222
 223                 if (timeout && !err_data.de_count) {
 224                         msleep(1);
 225                         timeout--;
 226                 }
 227
 228         } while (timeout && !err_data.de_count);
 229
 230         if (!timeout)
 231                 dev_warn(adev->dev, "Can't find bad pages\n");
 232
 233         if (err_data.de_count)
 234                 dev_info(adev->dev, "%ld new deferred hardware errors detected\n", err_data.de_count);
 235
 236         if (obj) {
 237                 obj->err_data.ue_count += err_data.ue_count;
 238                 obj->err_data.ce_count += err_data.ce_count;
 239                 obj->err_data.de_count += err_data.de_count;
 240         }
 241
 242         amdgpu_ras_error_data_fini(&err_data);
 243
 244         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
 245
 246         if (reset) {
 247                 struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 248
 249                 con->gpu_reset_flags |= reset;
 250                 amdgpu_ras_reset_gpu(adev);
 251         }
 252
 253         return 0;
 254 }
 255
 256 int amdgpu_umc_pasid_poison_handler(struct amdgpu_device *adev,
 257                         enum amdgpu_ras_block block, uint16_t pasid,
 258                         pasid_notify pasid_fn, void *data, uint32_t reset)
 259 {
 260         int ret = AMDGPU_RAS_SUCCESS;
 261
 262         if (adev->gmc.xgmi.connected_to_cpu ||
 263                 adev->gmc.is_app_apu) {
 264                 if (reset) {
 265                         /* MCA poison handler is only responsible for GPU reset,
 266                          * let MCA notifier do page retirement.
 267                          */
 268                         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
 269                         amdgpu_ras_reset_gpu(adev);
 270                 }
 271                 return ret;
 272         }
 273
 274         if (!amdgpu_sriov_vf(adev)) {
 275                 if (amdgpu_ip_version(adev, UMC_HWIP, 0) < IP_VERSION(12, 0, 0)) {
 276                         struct ras_err_data err_data;
 277                         struct ras_common_if head = {
 278                                 .block = AMDGPU_RAS_BLOCK__UMC,
 279                         };
 280                         struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head);
 281
 282                         ret = amdgpu_ras_error_data_init(&err_data);
 283                         if (ret)
 284                                 return ret;
 285
 286                         ret = amdgpu_umc_do_page_retirement(adev, &err_data, NULL, reset);
 287
 288                         if (ret == AMDGPU_RAS_SUCCESS && obj) {
 289                                 obj->err_data.ue_count += err_data.ue_count;
 290                                 obj->err_data.ce_count += err_data.ce_count;
 291                                 obj->err_data.de_count += err_data.de_count;
 292                         }
 293
 294                         amdgpu_ras_error_data_fini(&err_data);
 295                 } else {
 296                                 struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 297
 298                                 amdgpu_ras_put_poison_req(adev,
 299                                         block, pasid, pasid_fn, data, reset);
 300
 301                                 atomic_inc(&con->page_retirement_req_cnt);
 302
 303                                 wake_up(&con->page_retirement_wq);
 304                 }
 305         } else {
 306                 if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
 307                         adev->virt.ops->ras_poison_handler(adev, block);
 308                 else
 309                         dev_warn(adev->dev,
 310                                 "No ras_poison_handler interface in SRIOV!\n");
 311         }
 312
 313         return ret;
 314 }
 315
 316 int amdgpu_umc_poison_handler(struct amdgpu_device *adev,
 317                         enum amdgpu_ras_block block, uint32_t reset)
 318 {
 319         return amdgpu_umc_pasid_poison_handler(adev,
 320                                 block, 0, NULL, NULL, reset);
 321 }
 322
 323 int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
 324                 void *ras_error_status,
 325                 struct amdgpu_iv_entry *entry)
 326 {
 327         return amdgpu_umc_do_page_retirement(adev, ras_error_status, entry,
 328                                 AMDGPU_RAS_GPU_RESET_MODE1_RESET);
 329 }
 330
 331 int amdgpu_umc_ras_sw_init(struct amdgpu_device *adev)
 332 {
 333         int err;
 334         struct amdgpu_umc_ras *ras;
 335
 336         if (!adev->umc.ras)
 337                 return 0;
 338
 339         ras = adev->umc.ras;
 340
 341         err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
 342         if (err) {
 343                 dev_err(adev->dev, "Failed to register umc ras block!\n");
 344                 return err;
 345         }
 346
 347         strcpy(adev->umc.ras->ras_block.ras_comm.name, "umc");
 348         ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__UMC;
 349         ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
 350         adev->umc.ras_if = &ras->ras_block.ras_comm;
 351
 352         if (!ras->ras_block.ras_late_init)
 353                 ras->ras_block.ras_late_init = amdgpu_umc_ras_late_init;
 354
 355         if (!ras->ras_block.ras_cb)
 356                 ras->ras_block.ras_cb = amdgpu_umc_process_ras_data_cb;
 357
 358         return 0;
 359 }
 360
 361 int amdgpu_umc_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
 362 {
 363         int r;
 364
 365         r = amdgpu_ras_block_late_init(adev, ras_block);
 366         if (r)
 367                 return r;
 368
 369         if (amdgpu_ras_is_supported(adev, ras_block->block)) {
 370                 r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
 371                 if (r)
 372                         goto late_fini;
 373         }
 374
 375         /* ras init of specific umc version */
 376         if (adev->umc.ras &&
 377             adev->umc.ras->err_cnt_init)
 378                 adev->umc.ras->err_cnt_init(adev);
 379
 380         return 0;
 381
 382 late_fini:
 383         amdgpu_ras_block_late_fini(adev, ras_block);
 384         return r;
 385 }
 386
 387 int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
 388                 struct amdgpu_irq_src *source,
 389                 struct amdgpu_iv_entry *entry)
 390 {
 391         struct ras_common_if *ras_if = adev->umc.ras_if;
 392         struct ras_dispatch_if ih_data = {
 393                 .entry = entry,
 394         };
 395
 396         if (!ras_if)
 397                 return 0;
 398
 399         ih_data.head = *ras_if;
 400
 401         amdgpu_ras_interrupt_dispatch(adev, &ih_data);
 402         return 0;
 403 }
 404
 405 int amdgpu_umc_fill_error_record(struct ras_err_data *err_data,
 406                 uint64_t err_addr,
 407                 uint64_t retired_page,
 408                 uint32_t channel_index,
 409                 uint32_t umc_inst)
 410 {
 411         struct eeprom_table_record *err_rec;
 412
 413         if (!err_data ||
 414             !err_data->err_addr ||
 415             (err_data->err_addr_cnt >= err_data->err_addr_len))
 416                 return -EINVAL;
 417
 418         err_rec = &err_data->err_addr[err_data->err_addr_cnt];
 419
 420         err_rec->address = err_addr;
 421         /* page frame address is saved */
 422         err_rec->retired_page = retired_page >> AMDGPU_GPU_PAGE_SHIFT;
 423         err_rec->ts = (uint64_t)ktime_get_real_seconds();
 424         err_rec->err_type = AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE;
 425         err_rec->cu = 0;
 426         err_rec->mem_channel = channel_index;
 427         err_rec->mcumc_id = umc_inst;
 428
 429         err_data->err_addr_cnt++;
 430
 431         return 0;
 432 }
 433
 434 int amdgpu_umc_loop_channels(struct amdgpu_device *adev,
 435                         umc_func func, void *data)
 436 {
 437         uint32_t node_inst       = 0;
 438         uint32_t umc_inst        = 0;
 439         uint32_t ch_inst         = 0;
 440         int ret = 0;
 441
 442         if (adev->umc.node_inst_num) {
 443                 LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 444                         ret = func(adev, node_inst, umc_inst, ch_inst, data);
 445                         if (ret) {
 446                                 dev_err(adev->dev, "Node %d umc %d ch %d func returns %d\n",
 447                                         node_inst, umc_inst, ch_inst, ret);
 448                                 return ret;
 449                         }
 450                 }
 451         } else {
 452                 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
 453                         ret = func(adev, 0, umc_inst, ch_inst, data);
 454                         if (ret) {
 455                                 dev_err(adev->dev, "Umc %d ch %d func returns %d\n",
 456                                         umc_inst, ch_inst, ret);
 457                                 return ret;
 458                         }
 459                 }
 460         }
 461
 462         return 0;
 463 }
 464
 465 int amdgpu_umc_update_ecc_status(struct amdgpu_device *adev,
 466                                 uint64_t status, uint64_t ipid, uint64_t addr)
 467 {
 468         if (adev->umc.ras->update_ecc_status)
 469                 return adev->umc.ras->update_ecc_status(adev,
 470                                         status, ipid, addr);
 471         return 0;
 472 }
 473
 474 static int amdgpu_umc_uint64_cmp(const void *a, const void *b)
 475 {
 476         uint64_t *addr_a = (uint64_t *)a;
 477         uint64_t *addr_b = (uint64_t *)b;
 478
 479         if (*addr_a > *addr_b)
 480                 return 1;
 481         else if (*addr_a < *addr_b)
 482                 return -1;
 483         else
 484                 return 0;
 485 }
 486
 487 /* Use string hash to avoid logging the same bad pages repeatedly */
 488 int amdgpu_umc_build_pages_hash(struct amdgpu_device *adev,
 489                 uint64_t *pfns, int len, uint64_t *val)
 490 {
 491         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 492         char buf[MAX_UMC_HASH_STRING_SIZE] = {0};
 493         int offset = 0, i = 0;
 494         uint64_t hash_val;
 495
 496         if (!pfns || !len)
 497                 return -EINVAL;
 498
 499         sort(pfns, len, sizeof(uint64_t), amdgpu_umc_uint64_cmp, NULL);
 500
 501         for (i = 0; i < len; i++)
 502                 offset += snprintf(&buf[offset], sizeof(buf) - offset, "%llx", pfns[i]);
 503
 504         hash_val = siphash(buf, offset, &con->umc_ecc_log.ecc_key);
 505
 506         *val = hash_val;
 507
 508         return 0;
 509 }
 510
 511 int amdgpu_umc_logs_ecc_err(struct amdgpu_device *adev,
 512                 struct radix_tree_root *ecc_tree, struct ras_ecc_err *ecc_err)
 513 {
 514         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 515         struct ras_ecc_log_info *ecc_log;
 516         int ret;
 517
 518         ecc_log = &con->umc_ecc_log;
 519
 520         mutex_lock(&ecc_log->lock);
 521         ret = radix_tree_insert(ecc_tree, ecc_err->hash_index, ecc_err);
 522         if (!ret) {
 523                 struct ras_err_pages *err_pages = &ecc_err->err_pages;
 524                 int i;
 525
 526                 /* Reserve memory */
 527                 for (i = 0; i < err_pages->count; i++)
 528                         amdgpu_ras_reserve_page(adev, err_pages->pfn[i]);
 529
 530                 radix_tree_tag_set(ecc_tree,
 531                         ecc_err->hash_index, UMC_ECC_NEW_DETECTED_TAG);
 532         }
 533         mutex_unlock(&ecc_log->lock);
 534
 535         return ret;
 536 }