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 || err_data->de_count) &&
 199             (reset || amdgpu_ras_is_rma(adev))) {
 200                 con->gpu_reset_flags |= reset;
 201                 amdgpu_ras_reset_gpu(adev);
 202         }
 203
 204         return AMDGPU_RAS_SUCCESS;
 205 }
 206
 207 int amdgpu_umc_pasid_poison_handler(struct amdgpu_device *adev,
 208                         enum amdgpu_ras_block block, uint16_t pasid,
 209                         pasid_notify pasid_fn, void *data, uint32_t reset)
 210 {
 211         int ret = AMDGPU_RAS_SUCCESS;
 212
 213         if (adev->gmc.xgmi.connected_to_cpu ||
 214                 adev->gmc.is_app_apu) {
 215                 if (reset) {
 216                         /* MCA poison handler is only responsible for GPU reset,
 217                          * let MCA notifier do page retirement.
 218                          */
 219                         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
 220                         amdgpu_ras_reset_gpu(adev);
 221                 }
 222                 return ret;
 223         }
 224
 225         if (!amdgpu_sriov_vf(adev)) {
 226                 if (amdgpu_ip_version(adev, UMC_HWIP, 0) < IP_VERSION(12, 0, 0)) {
 227                         struct ras_err_data err_data;
 228                         struct ras_common_if head = {
 229                                 .block = AMDGPU_RAS_BLOCK__UMC,
 230                         };
 231                         struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head);
 232
 233                         ret = amdgpu_ras_error_data_init(&err_data);
 234                         if (ret)
 235                                 return ret;
 236
 237                         ret = amdgpu_umc_do_page_retirement(adev, &err_data, NULL, reset);
 238
 239                         if (ret == AMDGPU_RAS_SUCCESS && obj) {
 240                                 obj->err_data.ue_count += err_data.ue_count;
 241                                 obj->err_data.ce_count += err_data.ce_count;
 242                                 obj->err_data.de_count += err_data.de_count;
 243                         }
 244
 245                         amdgpu_ras_error_data_fini(&err_data);
 246                 } else {
 247                         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 248                         int ret;
 249
 250                         ret = amdgpu_ras_put_poison_req(adev,
 251                                 block, pasid, pasid_fn, data, reset);
 252                         if (!ret) {
 253                                 atomic_inc(&con->page_retirement_req_cnt);
 254                                 wake_up(&con->page_retirement_wq);
 255                         }
 256                 }
 257         } else {
 258                 if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
 259                         adev->virt.ops->ras_poison_handler(adev, block);
 260                 else
 261                         dev_warn(adev->dev,
 262                                 "No ras_poison_handler interface in SRIOV!\n");
 263         }
 264
 265         return ret;
 266 }
 267
 268 int amdgpu_umc_poison_handler(struct amdgpu_device *adev,
 269                         enum amdgpu_ras_block block, uint32_t reset)
 270 {
 271         return amdgpu_umc_pasid_poison_handler(adev,
 272                                 block, 0, NULL, NULL, reset);
 273 }
 274
 275 int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
 276                 void *ras_error_status,
 277                 struct amdgpu_iv_entry *entry)
 278 {
 279         return amdgpu_umc_do_page_retirement(adev, ras_error_status, entry,
 280                                 AMDGPU_RAS_GPU_RESET_MODE1_RESET);
 281 }
 282
 283 int amdgpu_umc_ras_sw_init(struct amdgpu_device *adev)
 284 {
 285         int err;
 286         struct amdgpu_umc_ras *ras;
 287
 288         if (!adev->umc.ras)
 289                 return 0;
 290
 291         ras = adev->umc.ras;
 292
 293         err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
 294         if (err) {
 295                 dev_err(adev->dev, "Failed to register umc ras block!\n");
 296                 return err;
 297         }
 298
 299         strcpy(adev->umc.ras->ras_block.ras_comm.name, "umc");
 300         ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__UMC;
 301         ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
 302         adev->umc.ras_if = &ras->ras_block.ras_comm;
 303
 304         if (!ras->ras_block.ras_late_init)
 305                 ras->ras_block.ras_late_init = amdgpu_umc_ras_late_init;
 306
 307         if (!ras->ras_block.ras_cb)
 308                 ras->ras_block.ras_cb = amdgpu_umc_process_ras_data_cb;
 309
 310         return 0;
 311 }
 312
 313 int amdgpu_umc_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
 314 {
 315         int r;
 316
 317         r = amdgpu_ras_block_late_init(adev, ras_block);
 318         if (r)
 319                 return r;
 320
 321         if (amdgpu_sriov_vf(adev))
 322                 return r;
 323
 324         if (amdgpu_ras_is_supported(adev, ras_block->block)) {
 325                 r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
 326                 if (r)
 327                         goto late_fini;
 328         }
 329
 330         /* ras init of specific umc version */
 331         if (adev->umc.ras &&
 332             adev->umc.ras->err_cnt_init)
 333                 adev->umc.ras->err_cnt_init(adev);
 334
 335         return 0;
 336
 337 late_fini:
 338         amdgpu_ras_block_late_fini(adev, ras_block);
 339         return r;
 340 }
 341
 342 int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
 343                 struct amdgpu_irq_src *source,
 344                 struct amdgpu_iv_entry *entry)
 345 {
 346         struct ras_common_if *ras_if = adev->umc.ras_if;
 347         struct ras_dispatch_if ih_data = {
 348                 .entry = entry,
 349         };
 350
 351         if (!ras_if)
 352                 return 0;
 353
 354         ih_data.head = *ras_if;
 355
 356         amdgpu_ras_interrupt_dispatch(adev, &ih_data);
 357         return 0;
 358 }
 359
 360 int amdgpu_umc_fill_error_record(struct ras_err_data *err_data,
 361                 uint64_t err_addr,
 362                 uint64_t retired_page,
 363                 uint32_t channel_index,
 364                 uint32_t umc_inst)
 365 {
 366         struct eeprom_table_record *err_rec;
 367
 368         if (!err_data ||
 369             !err_data->err_addr ||
 370             (err_data->err_addr_cnt >= err_data->err_addr_len))
 371                 return -EINVAL;
 372
 373         err_rec = &err_data->err_addr[err_data->err_addr_cnt];
 374
 375         err_rec->address = err_addr;
 376         /* page frame address is saved */
 377         err_rec->retired_page = retired_page >> AMDGPU_GPU_PAGE_SHIFT;
 378         err_rec->ts = (uint64_t)ktime_get_real_seconds();
 379         err_rec->err_type = AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE;
 380         err_rec->cu = 0;
 381         err_rec->mem_channel = channel_index;
 382         err_rec->mcumc_id = umc_inst;
 383
 384         err_data->err_addr_cnt++;
 385
 386         return 0;
 387 }
 388
 389 int amdgpu_umc_loop_channels(struct amdgpu_device *adev,
 390                         umc_func func, void *data)
 391 {
 392         uint32_t node_inst       = 0;
 393         uint32_t umc_inst        = 0;
 394         uint32_t ch_inst         = 0;
 395         int ret = 0;
 396
 397         if (adev->umc.node_inst_num) {
 398                 LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 399                         ret = func(adev, node_inst, umc_inst, ch_inst, data);
 400                         if (ret) {
 401                                 dev_err(adev->dev, "Node %d umc %d ch %d func returns %d\n",
 402                                         node_inst, umc_inst, ch_inst, ret);
 403                                 return ret;
 404                         }
 405                 }
 406         } else {
 407                 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
 408                         ret = func(adev, 0, umc_inst, ch_inst, data);
 409                         if (ret) {
 410                                 dev_err(adev->dev, "Umc %d ch %d func returns %d\n",
 411                                         umc_inst, ch_inst, ret);
 412                                 return ret;
 413                         }
 414                 }
 415         }
 416
 417         return 0;
 418 }
 419
 420 int amdgpu_umc_update_ecc_status(struct amdgpu_device *adev,
 421                                 uint64_t status, uint64_t ipid, uint64_t addr)
 422 {
 423         if (adev->umc.ras->update_ecc_status)
 424                 return adev->umc.ras->update_ecc_status(adev,
 425                                         status, ipid, addr);
 426         return 0;
 427 }
 428
 429 int amdgpu_umc_logs_ecc_err(struct amdgpu_device *adev,
 430                 struct radix_tree_root *ecc_tree, struct ras_ecc_err *ecc_err)
 431 {
 432         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
 433         struct ras_ecc_log_info *ecc_log;
 434         int ret;
 435
 436         ecc_log = &con->umc_ecc_log;
 437
 438         mutex_lock(&ecc_log->lock);
 439         ret = radix_tree_insert(ecc_tree, ecc_err->pa_pfn, ecc_err);
 440         if (!ret)
 441                 radix_tree_tag_set(ecc_tree,
 442                         ecc_err->pa_pfn, UMC_ECC_NEW_DETECTED_TAG);
 443         mutex_unlock(&ecc_log->lock);
 444
 445         return ret;
 446 }