drivers/gpu/drm/amd/amdgpu/amdgpu_mmhub.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 "amdgpu_ras.h"
  26
  27 int amdgpu_mmhub_ras_late_init(struct amdgpu_device *adev)
  28 {
  29         int r;
  30         struct ras_ih_if ih_info = {
  31                 .cb = NULL,
  32         };
  33         struct ras_fs_if fs_info = {
  34                 .sysfs_name = "mmhub_err_count",
  35                 .debugfs_name = "mmhub_err_inject",
  36         };
  37
  38         if (!adev->mmhub.ras_if) {
  39                 adev->mmhub.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
  40                 if (!adev->mmhub.ras_if)
  41                         return -ENOMEM;
  42                 adev->mmhub.ras_if->block = AMDGPU_RAS_BLOCK__MMHUB;
  43                 adev->mmhub.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
  44                 adev->mmhub.ras_if->sub_block_index = 0;
  45                 strcpy(adev->mmhub.ras_if->name, "mmhub");
  46         }
  47         ih_info.head = fs_info.head = *adev->mmhub.ras_if;
  48         r = amdgpu_ras_late_init(adev, adev->mmhub.ras_if,
  49                                  &fs_info, &ih_info);
  50         if (r || !amdgpu_ras_is_supported(adev, adev->mmhub.ras_if->block)) {
  51                 kfree(adev->mmhub.ras_if);
  52                 adev->mmhub.ras_if = NULL;
  53         }
  54
  55         return r;
  56 }
  57
  58 void amdgpu_mmhub_ras_fini(struct amdgpu_device *adev)
  59 {
  60         if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__MMHUB) &&
  61                         adev->mmhub.ras_if) {
  62                 struct ras_common_if *ras_if = adev->mmhub.ras_if;
  63                 struct ras_ih_if ih_info = {
  64                         .cb = NULL,
  65                 };
  66
  67                 amdgpu_ras_late_fini(adev, ras_if, &ih_info);
  68                 kfree(ras_if);
  69         }
  70 }