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_ras.h"
  25
  26 int amdgpu_umc_ras_late_init(struct amdgpu_device *adev)
  27 {
  28         int r;
  29         struct ras_fs_if fs_info = {
  30                 .sysfs_name = "umc_err_count",
  31         };
  32         struct ras_ih_if ih_info = {
  33                 .cb = amdgpu_umc_process_ras_data_cb,
  34         };
  35
  36         if (!adev->umc.ras_if) {
  37                 adev->umc.ras_if =
  38                         kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
  39                 if (!adev->umc.ras_if)
  40                         return -ENOMEM;
  41                 adev->umc.ras_if->block = AMDGPU_RAS_BLOCK__UMC;
  42                 adev->umc.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
  43                 adev->umc.ras_if->sub_block_index = 0;
  44                 strcpy(adev->umc.ras_if->name, "umc");
  45         }
  46         ih_info.head = fs_info.head = *adev->umc.ras_if;
  47
  48         r = amdgpu_ras_late_init(adev, adev->umc.ras_if,
  49                                  &fs_info, &ih_info);
  50         if (r)
  51                 goto free;
  52
  53         if (amdgpu_ras_is_supported(adev, adev->umc.ras_if->block)) {
  54                 r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
  55                 if (r)
  56                         goto late_fini;
  57         } else {
  58                 r = 0;
  59                 goto free;
  60         }
  61
  62         /* ras init of specific umc version */
  63         if (adev->umc.funcs && adev->umc.funcs->err_cnt_init)
  64                 adev->umc.funcs->err_cnt_init(adev);
  65
  66         return 0;
  67
  68 late_fini:
  69         amdgpu_ras_late_fini(adev, adev->umc.ras_if, &ih_info);
  70 free:
  71         kfree(adev->umc.ras_if);
  72         adev->umc.ras_if = NULL;
  73         return r;
  74 }
  75
  76 void amdgpu_umc_ras_fini(struct amdgpu_device *adev)
  77 {
  78         if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__UMC) &&
  79                         adev->umc.ras_if) {
  80                 struct ras_common_if *ras_if = adev->umc.ras_if;
  81                 struct ras_ih_if ih_info = {
  82                         .head = *ras_if,
  83                         .cb = amdgpu_umc_process_ras_data_cb,
  84                 };
  85
  86                 amdgpu_ras_late_fini(adev, ras_if, &ih_info);
  87                 kfree(ras_if);
  88         }
  89 }
  90
  91 int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
  92                 void *ras_error_status,
  93                 struct amdgpu_iv_entry *entry)
  94 {
  95         struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
  96
  97         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
  98         if (adev->umc.funcs &&
  99             adev->umc.funcs->query_ras_error_count)
 100             adev->umc.funcs->query_ras_error_count(adev, ras_error_status);
 101
 102         if (adev->umc.funcs &&
 103             adev->umc.funcs->query_ras_error_address &&
 104             adev->umc.max_ras_err_cnt_per_query) {
 105                 err_data->err_addr =
 106                         kcalloc(adev->umc.max_ras_err_cnt_per_query,
 107                                 sizeof(struct eeprom_table_record), GFP_KERNEL);
 108
 109                 /* still call query_ras_error_address to clear error status
 110                  * even NOMEM error is encountered
 111                  */
 112                 if(!err_data->err_addr)
 113                         dev_warn(adev->dev, "Failed to alloc memory for "
 114                                         "umc error address record!\n");
 115
 116                 /* umc query_ras_error_address is also responsible for clearing
 117                  * error status
 118                  */
 119                 adev->umc.funcs->query_ras_error_address(adev, ras_error_status);
 120         }
 121
 122         /* only uncorrectable error needs gpu reset */
 123         if (err_data->ue_count) {
 124                 dev_info(adev->dev, "%ld uncorrectable hardware errors "
 125                                 "detected in UMC block\n",
 126                                 err_data->ue_count);
 127
 128                 if (err_data->err_addr_cnt &&
 129                     amdgpu_ras_add_bad_pages(adev, err_data->err_addr,
 130                                                 err_data->err_addr_cnt))
 131                         dev_warn(adev->dev, "Failed to add ras bad page!\n");
 132
 133                 amdgpu_ras_reset_gpu(adev);
 134         }
 135
 136         kfree(err_data->err_addr);
 137         return AMDGPU_RAS_SUCCESS;
 138 }
 139
 140 int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
 141                 struct amdgpu_irq_src *source,
 142                 struct amdgpu_iv_entry *entry)
 143 {
 144         struct ras_common_if *ras_if = adev->umc.ras_if;
 145         struct ras_dispatch_if ih_data = {
 146                 .entry = entry,
 147         };
 148
 149         if (!ras_if)
 150                 return 0;
 151
 152         ih_data.head = *ras_if;
 153
 154         amdgpu_ras_interrupt_dispatch(adev, &ih_data);
 155         return 0;
 156 }