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 "amdgpu.h"
  25 #include "umc_v6_7.h"
  26
  27 static int amdgpu_umc_convert_error_address(struct amdgpu_device *adev,
  28                                     struct ras_err_data *err_data, uint64_t err_addr,
  29                                     uint32_t ch_inst, uint32_t umc_inst)
  30 {
  31         switch (amdgpu_ip_version(adev, UMC_HWIP, 0)) {
  32         case IP_VERSION(6, 7, 0):
  33                 umc_v6_7_convert_error_address(adev,
  34                                 err_data, err_addr, ch_inst, umc_inst);
  35                 break;
  36         default:
  37                 dev_warn(adev->dev,
  38                          "UMC address to Physical address translation is not supported\n");
  39                 return AMDGPU_RAS_FAIL;
  40         }
  41
  42         return AMDGPU_RAS_SUCCESS;
  43 }
  44
  45 int amdgpu_umc_page_retirement_mca(struct amdgpu_device *adev,
  46                         uint64_t err_addr, uint32_t ch_inst, uint32_t umc_inst)
  47 {
  48         struct ras_err_data err_data;
  49         int ret;
  50
  51         ret = amdgpu_ras_error_data_init(&err_data);
  52         if (ret)
  53                 return ret;
  54
  55         err_data.err_addr =
  56                 kcalloc(adev->umc.max_ras_err_cnt_per_query,
  57                         sizeof(struct eeprom_table_record), GFP_KERNEL);
  58         if (!err_data.err_addr) {
  59                 dev_warn(adev->dev,
  60                         "Failed to alloc memory for umc error record in MCA notifier!\n");
  61                 ret = AMDGPU_RAS_FAIL;
  62                 goto out_fini_err_data;
  63         }
  64
  65         /*
  66          * Translate UMC channel address to Physical address
  67          */
  68         ret = amdgpu_umc_convert_error_address(adev, &err_data, err_addr,
  69                                         ch_inst, umc_inst);
  70         if (ret)
  71                 goto out_free_err_addr;
  72
  73         if (amdgpu_bad_page_threshold != 0) {
  74                 amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
  75                                                 err_data.err_addr_cnt);
  76                 amdgpu_ras_save_bad_pages(adev, NULL);
  77         }
  78
  79 out_free_err_addr:
  80         kfree(err_data.err_addr);
  81
  82 out_fini_err_data:
  83         amdgpu_ras_error_data_fini(&err_data);
  84
  85         return ret;
  86 }
  87
  88 static int amdgpu_umc_do_page_retirement(struct amdgpu_device *adev,
  89                 void *ras_error_status,
  90                 struct amdgpu_iv_entry *entry,
  91                 bool reset)
  92 {
  93         struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
  94         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
  95         int ret = 0;
  96
  97         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
  98         ret = amdgpu_dpm_get_ecc_info(adev, (void *)&(con->umc_ecc));
  99         if (ret == -EOPNOTSUPP) {
 100                 if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
 101                     adev->umc.ras->ras_block.hw_ops->query_ras_error_count)
 102                     adev->umc.ras->ras_block.hw_ops->query_ras_error_count(adev, ras_error_status);
 103
 104                 if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
 105                     adev->umc.ras->ras_block.hw_ops->query_ras_error_address &&
 106                     adev->umc.max_ras_err_cnt_per_query) {
 107                         err_data->err_addr =
 108                                 kcalloc(adev->umc.max_ras_err_cnt_per_query,
 109                                         sizeof(struct eeprom_table_record), GFP_KERNEL);
 110
 111                         /* still call query_ras_error_address to clear error status
 112                          * even NOMEM error is encountered
 113                          */
 114                         if(!err_data->err_addr)
 115                                 dev_warn(adev->dev, "Failed to alloc memory for "
 116                                                 "umc error address record!\n");
 117
 118                         /* umc query_ras_error_address is also responsible for clearing
 119                          * error status
 120                          */
 121                         adev->umc.ras->ras_block.hw_ops->query_ras_error_address(adev, ras_error_status);
 122                 }
 123         } else if (!ret) {
 124                 if (adev->umc.ras &&
 125                     adev->umc.ras->ecc_info_query_ras_error_count)
 126                     adev->umc.ras->ecc_info_query_ras_error_count(adev, ras_error_status);
 127
 128                 if (adev->umc.ras &&
 129                     adev->umc.ras->ecc_info_query_ras_error_address &&
 130                     adev->umc.max_ras_err_cnt_per_query) {
 131                         err_data->err_addr =
 132                                 kcalloc(adev->umc.max_ras_err_cnt_per_query,
 133                                         sizeof(struct eeprom_table_record), GFP_KERNEL);
 134
 135                         /* still call query_ras_error_address to clear error status
 136                          * even NOMEM error is encountered
 137                          */
 138                         if(!err_data->err_addr)
 139                                 dev_warn(adev->dev, "Failed to alloc memory for "
 140                                                 "umc error address record!\n");
 141
 142                         /* umc query_ras_error_address is also responsible for clearing
 143                          * error status
 144                          */
 145                         adev->umc.ras->ecc_info_query_ras_error_address(adev, ras_error_status);
 146                 }
 147         }
 148
 149         /* only uncorrectable error needs gpu reset */
 150         if (err_data->ue_count) {
 151                 dev_info(adev->dev, "%ld uncorrectable hardware errors "
 152                                 "detected in UMC block\n",
 153                                 err_data->ue_count);
 154
 155                 if ((amdgpu_bad_page_threshold != 0) &&
 156                         err_data->err_addr_cnt) {
 157                         amdgpu_ras_add_bad_pages(adev, err_data->err_addr,
 158                                                 err_data->err_addr_cnt);
 159                         amdgpu_ras_save_bad_pages(adev, &(err_data->ue_count));
 160
 161                         amdgpu_dpm_send_hbm_bad_pages_num(adev, con->eeprom_control.ras_num_recs);
 162
 163                         if (con->update_channel_flag == true) {
 164                                 amdgpu_dpm_send_hbm_bad_channel_flag(adev, con->eeprom_control.bad_channel_bitmap);
 165                                 con->update_channel_flag = false;
 166                         }
 167                 }
 168
 169                 if (reset)
 170                         amdgpu_ras_reset_gpu(adev);
 171         }
 172
 173         kfree(err_data->err_addr);
 174         return AMDGPU_RAS_SUCCESS;
 175 }
 176
 177 int amdgpu_umc_poison_handler(struct amdgpu_device *adev, bool reset)
 178 {
 179         int ret = AMDGPU_RAS_SUCCESS;
 180
 181         if (adev->gmc.xgmi.connected_to_cpu ||
 182                 adev->gmc.is_app_apu) {
 183                 if (reset) {
 184                         /* MCA poison handler is only responsible for GPU reset,
 185                          * let MCA notifier do page retirement.
 186                          */
 187                         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
 188                         amdgpu_ras_reset_gpu(adev);
 189                 }
 190                 return ret;
 191         }
 192
 193         if (!amdgpu_sriov_vf(adev)) {
 194                 struct ras_err_data err_data;
 195                 struct ras_common_if head = {
 196                         .block = AMDGPU_RAS_BLOCK__UMC,
 197                 };
 198                 struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head);
 199
 200                 ret = amdgpu_ras_error_data_init(&err_data);
 201                 if (ret)
 202                         return ret;
 203
 204                 ret = amdgpu_umc_do_page_retirement(adev, &err_data, NULL, reset);
 205
 206                 if (ret == AMDGPU_RAS_SUCCESS && obj) {
 207                         obj->err_data.ue_count += err_data.ue_count;
 208                         obj->err_data.ce_count += err_data.ce_count;
 209                 }
 210
 211                 amdgpu_ras_error_data_fini(&err_data);
 212         } else {
 213                 if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
 214                         adev->virt.ops->ras_poison_handler(adev);
 215                 else
 216                         dev_warn(adev->dev,
 217                                 "No ras_poison_handler interface in SRIOV!\n");
 218         }
 219
 220         return ret;
 221 }
 222
 223 int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
 224                 void *ras_error_status,
 225                 struct amdgpu_iv_entry *entry)
 226 {
 227         return amdgpu_umc_do_page_retirement(adev, ras_error_status, entry, true);
 228 }
 229
 230 int amdgpu_umc_ras_sw_init(struct amdgpu_device *adev)
 231 {
 232         int err;
 233         struct amdgpu_umc_ras *ras;
 234
 235         if (!adev->umc.ras)
 236                 return 0;
 237
 238         ras = adev->umc.ras;
 239
 240         err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
 241         if (err) {
 242                 dev_err(adev->dev, "Failed to register umc ras block!\n");
 243                 return err;
 244         }
 245
 246         strcpy(adev->umc.ras->ras_block.ras_comm.name, "umc");
 247         ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__UMC;
 248         ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
 249         adev->umc.ras_if = &ras->ras_block.ras_comm;
 250
 251         if (!ras->ras_block.ras_late_init)
 252                 ras->ras_block.ras_late_init = amdgpu_umc_ras_late_init;
 253
 254         if (!ras->ras_block.ras_cb)
 255                 ras->ras_block.ras_cb = amdgpu_umc_process_ras_data_cb;
 256
 257         return 0;
 258 }
 259
 260 int amdgpu_umc_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
 261 {
 262         int r;
 263
 264         r = amdgpu_ras_block_late_init(adev, ras_block);
 265         if (r)
 266                 return r;
 267
 268         if (amdgpu_ras_is_supported(adev, ras_block->block)) {
 269                 r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
 270                 if (r)
 271                         goto late_fini;
 272         }
 273
 274         /* ras init of specific umc version */
 275         if (adev->umc.ras &&
 276             adev->umc.ras->err_cnt_init)
 277                 adev->umc.ras->err_cnt_init(adev);
 278
 279         return 0;
 280
 281 late_fini:
 282         amdgpu_ras_block_late_fini(adev, ras_block);
 283         return r;
 284 }
 285
 286 int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
 287                 struct amdgpu_irq_src *source,
 288                 struct amdgpu_iv_entry *entry)
 289 {
 290         struct ras_common_if *ras_if = adev->umc.ras_if;
 291         struct ras_dispatch_if ih_data = {
 292                 .entry = entry,
 293         };
 294
 295         if (!ras_if)
 296                 return 0;
 297
 298         ih_data.head = *ras_if;
 299
 300         amdgpu_ras_interrupt_dispatch(adev, &ih_data);
 301         return 0;
 302 }
 303
 304 void amdgpu_umc_fill_error_record(struct ras_err_data *err_data,
 305                 uint64_t err_addr,
 306                 uint64_t retired_page,
 307                 uint32_t channel_index,
 308                 uint32_t umc_inst)
 309 {
 310         struct eeprom_table_record *err_rec =
 311                 &err_data->err_addr[err_data->err_addr_cnt];
 312
 313         err_rec->address = err_addr;
 314         /* page frame address is saved */
 315         err_rec->retired_page = retired_page >> AMDGPU_GPU_PAGE_SHIFT;
 316         err_rec->ts = (uint64_t)ktime_get_real_seconds();
 317         err_rec->err_type = AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE;
 318         err_rec->cu = 0;
 319         err_rec->mem_channel = channel_index;
 320         err_rec->mcumc_id = umc_inst;
 321
 322         err_data->err_addr_cnt++;
 323 }
 324
 325 int amdgpu_umc_loop_channels(struct amdgpu_device *adev,
 326                         umc_func func, void *data)
 327 {
 328         uint32_t node_inst       = 0;
 329         uint32_t umc_inst        = 0;
 330         uint32_t ch_inst         = 0;
 331         int ret = 0;
 332
 333         if (adev->umc.node_inst_num) {
 334                 LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 335                         ret = func(adev, node_inst, umc_inst, ch_inst, data);
 336                         if (ret) {
 337                                 dev_err(adev->dev, "Node %d umc %d ch %d func returns %d\n",
 338                                         node_inst, umc_inst, ch_inst, ret);
 339                                 return ret;
 340                         }
 341                 }
 342         } else {
 343                 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
 344                         ret = func(adev, 0, umc_inst, ch_inst, data);
 345                         if (ret) {
 346                                 dev_err(adev->dev, "Umc %d ch %d func returns %d\n",
 347                                         umc_inst, ch_inst, ret);
 348                                 return ret;
 349                         }
 350                 }
 351         }
 352
 353         return 0;
 354 }