LXR linux/drivers/gpu/drm/amd/amdgpu/amdgpu_vf

   1/*
   2 * Copyright 2017 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_vf_error.h"
  26#include "mxgpu_ai.h"
  27
  28void amdgpu_vf_error_put(struct amdgpu_device *adev,
  29                         uint16_t sub_error_code,
  30                         uint16_t error_flags,
  31                         uint64_t error_data)
  32{
  33        int index;
  34        uint16_t error_code;
  35
  36        if (!amdgpu_sriov_vf(adev))
  37                return;
  38
  39        error_code = AMDGIM_ERROR_CODE(AMDGIM_ERROR_CATEGORY_VF, sub_error_code);
  40
  41        mutex_lock(&adev->virt.vf_errors.lock);
  42        index = adev->virt.vf_errors.write_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
  43        adev->virt.vf_errors.code [index] = error_code;
  44        adev->virt.vf_errors.flags [index] = error_flags;
  45        adev->virt.vf_errors.data [index] = error_data;
  46        adev->virt.vf_errors.write_count ++;
  47        mutex_unlock(&adev->virt.vf_errors.lock);
  48}
  49
  50
  51void amdgpu_vf_error_trans_all(struct amdgpu_device *adev)
  52{
  53        /* u32 pf2vf_flags = 0; */
  54        u32 data1, data2, data3;
  55        int index;
  56
  57        if ((NULL == adev) || (!amdgpu_sriov_vf(adev)) ||
  58            (!adev->virt.ops) || (!adev->virt.ops->trans_msg)) {
  59                return;
  60        }
  61/*
  62        TODO: Enable these code when pv2vf_info is merged
  63        AMDGPU_FW_VRAM_PF2VF_READ (adev, feature_flags, &pf2vf_flags);
  64        if (!(pf2vf_flags & AMDGIM_FEATURE_ERROR_LOG_COLLECT)) {
  65                return;
  66        }
  67*/
  68
  69        mutex_lock(&adev->virt.vf_errors.lock);
  70        /* The errors are overlay of array, correct read_count as full. */
  71        if (adev->virt.vf_errors.write_count - adev->virt.vf_errors.read_count > AMDGPU_VF_ERROR_ENTRY_SIZE) {
  72                adev->virt.vf_errors.read_count = adev->virt.vf_errors.write_count - AMDGPU_VF_ERROR_ENTRY_SIZE;
  73        }
  74
  75        while (adev->virt.vf_errors.read_count < adev->virt.vf_errors.write_count) {
  76                index =adev->virt.vf_errors.read_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
  77                data1 = AMDGIM_ERROR_CODE_FLAGS_TO_MAILBOX(adev->virt.vf_errors.code[index],
  78                                                           adev->virt.vf_errors.flags[index]);
  79                data2 = adev->virt.vf_errors.data[index] & 0xFFFFFFFF;
  80                data3 = (adev->virt.vf_errors.data[index] >> 32) & 0xFFFFFFFF;
  81
  82                adev->virt.ops->trans_msg(adev, IDH_LOG_VF_ERROR, data1, data2, data3);
  83                adev->virt.vf_errors.read_count ++;
  84        }
  85        mutex_unlock(&adev->virt.vf_errors.lock);
  86}
  87