Line data    Source code

       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : 
      11              : #include "mem_mapping_manager.h"
      12              : #include "dlhal_function.h"
      13              : 
      14              : namespace hccl {
      15            0 : MemMappingManager& MemMappingManager::GetInstance(s32 deviceLogicID)
      16              : {
      17            0 :     static MemMappingManager instance[MAX_DEV_NUM];
      18            0 :     if (deviceLogicID == HOST_DEVICE_ID) {
      19            0 :         return instance[DEFAULT_DEVICE_LOGIC_ID];
      20              :     }
      21              : 
      22            0 :     if (static_cast<u32>(deviceLogicID) >= MAX_DEV_NUM || deviceLogicID <= HOST_DEVICE_ID) {
      23            0 :         HCCL_WARNING("[Get][Instance]deviceLogicID[%d] is invalid", deviceLogicID);
      24            0 :         return instance[DEFAULT_DEVICE_LOGIC_ID];
      25              :     }
      26            0 :     return instance[deviceLogicID];
      27              : }
      28            0 : MemMappingManager::~MemMappingManager() {}
      29              : // 获取映射后的devVa，先去map找，找不到则新建映射关系
      30            0 : HcclResult MemMappingManager::GetDevVA(s32 deviceLogicID, void* addr, u64 size, void*& devVA)
      31              : {
      32            0 :     std::unique_lock<std::mutex> lockMapping(mappedHostToDevMutex_);
      33            0 :     if (!DlHalFunction::GetInstance().DlHalFunctionIsInit()) {
      34            0 :         CHK_RET(DlHalFunction::GetInstance().DlHalFunctionInit());
      35            0 :         HCCL_INFO("[MemMappingManager] hal function init success.");
      36              :     }
      37              : 
      38            0 :     CHK_RET(MapMem(deviceLogicID, addr, size, devVA));
      39            0 :     HCCL_INFO("[MemMappingManager][GetDevVA]addr[%p] size[%llu] mapping success, devVa[%p]", addr, size, devVA);
      40            0 :     return HCCL_SUCCESS;
      41            0 : }
      42              : 
      43            0 : bool MemMappingManager::IsRequireMapping(void* addr, u64 size, void*& devVA)
      44              : {
      45            0 :     u64 userAddr = reinterpret_cast<u64>(addr);
      46            0 :     u64 userSize = size;
      47            0 :     if (mappedHostToDevMap_.size() == 0) {
      48            0 :         return true;
      49              :     }
      50              : 
      51            0 :     auto iter = SearchMappingMap(userAddr, userSize);
      52            0 :     if (iter != mappedHostToDevMap_.end()) {
      53            0 :         u64 tmpDva = reinterpret_cast<u64>(iter->second.devVA) + userAddr - iter->first.addr;
      54            0 :         devVA = reinterpret_cast<void*>(static_cast<uintptr_t>(tmpDva));
      55            0 :         iter->second.ref.Ref();
      56            0 :         return false;
      57              :     }
      58              : 
      59            0 :     return true;
      60              : }
      61              : 
      62            0 : MemMappingManager::HostMappingIter MemMappingManager::SearchMappingMap(u64 userAddr, u64 userSize)
      63              : {
      64            0 :     for (auto iter = mappedHostToDevMap_.begin(); iter != mappedHostToDevMap_.end(); ++iter) {
      65            0 :         if ((userAddr >= iter->first.addr) && (userAddr + userSize <= iter->first.size + iter->first.addr)) {
      66            0 :             return iter;
      67              :         }
      68              :     }
      69            0 :     return mappedHostToDevMap_.end();
      70              : }
      71              : 
      72              : } // namespace hccl