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
  28#define AMDGPU_VF_ERROR_ENTRY_SIZE    16 
  29
  30/* struct error_entry - amdgpu VF error information. */
  31struct amdgpu_vf_error_buffer {
  32        int read_count;
  33        int write_count;
  34        uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
  35        uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
  36        uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
  37};
  38
  39struct amdgpu_vf_error_buffer admgpu_vf_errors;
  40
  41
  42void amdgpu_vf_error_put(uint16_t sub_error_code, uint16_t error_flags, uint64_t error_data)
  43{
  44        int index;
  45        uint16_t error_code = AMDGIM_ERROR_CODE(AMDGIM_ERROR_CATEGORY_VF, sub_error_code);
  46
  47        index = admgpu_vf_errors.write_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
  48        admgpu_vf_errors.code [index] = error_code;
  49        admgpu_vf_errors.flags [index] = error_flags;
  50        admgpu_vf_errors.data [index] = error_data;
  51        admgpu_vf_errors.write_count ++;
  52}
  53
  54
  55void amdgpu_vf_error_trans_all(struct amdgpu_device *adev)
  56{
  57        /* u32 pf2vf_flags = 0; */
  58        u32 data1, data2, data3;
  59        int index;
  60
  61        if ((NULL == adev) || (!amdgpu_sriov_vf(adev)) || (!adev->virt.ops) || (!adev->virt.ops->trans_msg)) {
  62                return;
  63        }
  64/*
  65        TODO: Enable these code when pv2vf_info is merged
  66        AMDGPU_FW_VRAM_PF2VF_READ (adev, feature_flags, &pf2vf_flags);
  67        if (!(pf2vf_flags & AMDGIM_FEATURE_ERROR_LOG_COLLECT)) {
  68                return;
  69        }
  70*/
  71        /* The errors are overlay of array, correct read_count as full. */
  72        if (admgpu_vf_errors.write_count - admgpu_vf_errors.read_count > AMDGPU_VF_ERROR_ENTRY_SIZE) {
  73                admgpu_vf_errors.read_count = admgpu_vf_errors.write_count - AMDGPU_VF_ERROR_ENTRY_SIZE;
  74        }
  75
  76        while (admgpu_vf_errors.read_count < admgpu_vf_errors.write_count) {
  77                index =admgpu_vf_errors.read_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
  78                data1 = AMDGIM_ERROR_CODE_FLAGS_TO_MAILBOX (admgpu_vf_errors.code[index], admgpu_vf_errors.flags[index]);
  79                data2 = admgpu_vf_errors.data[index] & 0xFFFFFFFF;
  80                data3 = (admgpu_vf_errors.data[index] >> 32) & 0xFFFFFFFF;
  81
  82                adev->virt.ops->trans_msg(adev, IDH_LOG_VF_ERROR, data1, data2, data3);
  83                admgpu_vf_errors.read_count ++;
  84        }
  85}
  86