/**

 * Copyright (c) 2025-2026 Huawei Technologies Co., Ltd.

 * This program is free software, you can redistribute it and/or modify it under the terms and conditions of

 * CANN Open Software License Agreement Version 2.0 (the "License").

 * Please refer to the License for details. You may not use this file except in compliance with the License.

 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,

 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.

 * See LICENSE in the root of the software repository for the full text of the License.

 */



/*!

 * \file comm_context.h

 * \brief

 */



#ifndef __COMM_CONTEXT__

#define __COMM_CONTEXT__



#include <type_traits>



namespace TileOp {

struct CommContext {

    uint64_t rankId = 0;    // 当前卡rankId

    uint64_t rankNum = 0;

    int64_t startIndex = 0; // 每个win区起始Index

    int64_t statusIndex = -1;

    int64_t debugIndex = -1;

    uint64_t winDataSize = 0; // 每个win区大小

    uint64_t winStatusSize = 0;

    uint64_t winDebugSize = 0;

    uint64_t totalWinNum = 0;

    uint64_t winAddr[0]; // 大小rankNum*3，内存排布windata[0~rankNum-1], winStatus[0~rankNum-1], winDebug[0~rankNum-1]

};



namespace Distributed {

constexpr uint64_t OFFSET_BITS = 42UL;

constexpr uint64_t TILE_NUM_BITS = 12UL;

constexpr uint64_t GROUP_BITS = 2UL;

constexpr uint64_t MEMTYPE_BITS = 2UL;



constexpr uint64_t TILE_NUM_SHIFT = OFFSET_BITS;

constexpr uint64_t GROUP_SHIFT = TILE_NUM_SHIFT + TILE_NUM_BITS;

constexpr uint64_t MEMTYPE_SHIFT = GROUP_SHIFT + GROUP_BITS;

constexpr uint64_t FILL_SHIFT = MEMTYPE_SHIFT + MEMTYPE_BITS;



constexpr uint64_t OFFSET_MASK = (1UL << OFFSET_BITS) - 1UL;

constexpr uint64_t TILE_NUM_MASK = (1UL << TILE_NUM_BITS) - 1UL;

constexpr uint64_t GROUP_MASK = (1UL << GROUP_BITS) - 1UL;

constexpr uint64_t MEMTYPE_MASK = (1UL << MEMTYPE_BITS) - 1UL;



#ifdef INLINE

#define SHMEM_INLINE INLINE

#else

#define SHMEM_INLINE inline

#endif



SHMEM_INLINE uint64_t EncodeShmemAddr(uint64_t offset, uint64_t maxTileNum, uint64_t groupIndex, uint64_t memType)

{

    return offset | (maxTileNum << TILE_NUM_SHIFT) | (groupIndex << GROUP_SHIFT) | (memType << MEMTYPE_SHIFT) |

           (1UL << FILL_SHIFT);

}



SHMEM_INLINE uint64_t DecodeShmemAddrOffset(uint64_t val) { return val & OFFSET_MASK; }



SHMEM_INLINE uint64_t DecodeShmemAddrMaxTileNum(uint64_t val) { return (val >> TILE_NUM_SHIFT) & TILE_NUM_MASK; }



SHMEM_INLINE uint64_t DecodeShmemAddrGroupIndex(uint64_t val) { return (val >> GROUP_SHIFT) & GROUP_MASK; }



SHMEM_INLINE uint64_t DecodeShmemAddrMemtype(uint64_t val) { return (val >> MEMTYPE_SHIFT) & MEMTYPE_MASK; }

} // namespace Distributed

} // namespace TileOp



#endif