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 "ccu_wqebb_mgr_v1.h"
      12              : 
      13              : #include <vector>
      14              : 
      15              : #include "ccu_res_specs.h"
      16              : 
      17              : namespace hcomm {
      18              : 
      19              : // 计算 num 的以 2 为底的对数后移位，相当于向上最接近的 2 的整数次幂
      20           72 : static uint32_t RoundUpToNextPowerOfTwo(uint32_t num)
      21              : {
      22           72 :     if (num == 0) {
      23            0 :         return 1;
      24              :     }
      25              : 
      26           72 :     num--;
      27           72 :     num |= num >> 1;
      28           72 :     num |= num >> Hccl::SHIFT_2BITS;
      29           72 :     num |= num >> Hccl::SHIFT_4BITS;
      30           72 :     num |= num >> Hccl::SHIFT_8BITS;
      31           72 :     num |= num >> Hccl::SHIFT_16BITS;
      32           72 :     return num + 1;
      33              : }
      34              : 
      35           72 : static uint32_t GetWqeBBReqSizeBySqSize(uint32_t sqSize)
      36              : {
      37           72 :     if (sqSize < CCU_MIN_SQ_DEPTH) {
      38            0 :         HCCL_WARNING("[CcuJettyCtxMgr][%s] sqSize[%u] is too small, reset to [%u].",
      39              :             __func__, sqSize, CCU_MIN_SQ_DEPTH);
      40            0 :         return CCU_MIN_SQ_DEPTH;
      41              :     }
      42              : 
      43              :     // WQE basic block 的 size 必须是 2 的整数次幂，向上取整
      44           72 :     uint32_t wqeBBReqNum = RoundUpToNextPowerOfTwo(sqSize);
      45           72 :     if (wqeBBReqNum != sqSize) {
      46            0 :         HCCL_WARNING("[CcuJettyCtxMgr][%s] sqSize[%u] is not power of 2, reset to [%u].",
      47              :             __func__, sqSize, wqeBBReqNum);
      48              :     }
      49              : 
      50           72 :     if (sqSize > CCU_MAX_SQ_DEPTH) {
      51            0 :         HCCL_WARNING("[CcuJettyCtxMgr][%s] sqSize[%u] is too large, reset to [%u].",
      52              :             __func__, sqSize, CCU_MAX_SQ_DEPTH);
      53            0 :         return CCU_MAX_SQ_DEPTH;
      54              :     }
      55              : 
      56           72 :     return wqeBBReqNum;
      57              : }
      58              : 
      59           60 : HcclResult CcuWqeBBMgrV1::Init()
      60              : {
      61           60 :     uint32_t wqeBBNum = 0; // 获取失败或为0场景，分配将按资源不足操作
      62           60 :     (void)CcuResSpecifications::GetInstance(devLogicId_).GetWqeBBNum(dieId_, wqeBBNum);
      63           60 :     idAllocator_.reset(new (std::nothrow) CcuResIdAllocator(wqeBBNum)); 
      64           60 :     CHK_PTR_NULL(idAllocator_);
      65           60 :     return HcclResult::HCCL_SUCCESS;
      66              : }
      67              : 
      68           72 : HcclResult CcuWqeBBMgrV1::Alloc(const WqeBBReq& wqeBBReq, ResInfo &wqeBBInfo)
      69              : {
      70           72 :     uint32_t wqeBBReqSize = GetWqeBBReqSizeBySqSize(wqeBBReq.sqSize);
      71           72 :     std::vector<ResInfo> resInfo;
      72          144 :     auto ret = idAllocator_->Alloc(wqeBBReqSize, true, resInfo, "ResType::WqeBB"); // wqebb资源要求连续
      73           72 :     if (ret == HcclResult::HCCL_E_UNAVAIL) { 
      74            0 :         HCCL_WARNING("[CcuWqeBBMgrV1][%s] failed, left resources are not enough, " 
      75              :             "wqeBBReq.sqSize[%u], wqeBBSize[%u]", __func__,
      76              :             wqeBBReq.sqSize, wqeBBReqSize); 
      77            0 :         return ret; 
      78              :     } 
      79           72 :     CHK_RET(ret);
      80              : 
      81           72 :     wqeBBInfo = resInfo[0]; // 分配连续资源包含1个元素
      82           72 :     return ret;
      83           72 : }
      84              : 
      85           12 : HcclResult CcuWqeBBMgrV1::Release(const ResInfo &wqeBBInfo)
      86              : {
      87           12 :     auto ret = idAllocator_->Release(wqeBBInfo.startId, wqeBBInfo.num);
      88           12 :     CHK_PRT_RET(ret != HcclResult::HCCL_SUCCESS,
      89              :         HCCL_ERROR("[CcuWqeBBMgrV1][%s] failed, wqe basic block resource info[%s]",
      90              :             __func__, wqeBBInfo.Describe().c_str()),
      91              :         ret);
      92              : 
      93           12 :     return HcclResult::HCCL_SUCCESS;
      94              : }
      95              : }; // namespace hcomm