/**

 * Copyright (c) 2025 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.

 */

#include "devmng_common.h"

#include "devdrv_shm_comm.h"

#include "devdrv_flush_cache.h"

#ifndef DEVDRV_UT

void mb(void)

{

    asm volatile("dsb sy" : : : "memory");

}



void drvFlushCache(uint64_t base, uint32_t len)

{

    uint32_t i;

    uint32_t l = len / 64;



    if (base == 0) {

        DEVDRV_DRV_ERR("Invalid para, addr base is 0.\n");

        return;

    }



    DRV_ATRACE_BEGIN(drvFlushCache);

    asm volatile("dsb st" : : : "memory");

    for (i = 0; i < l; i++) {

        asm volatile("DC CIVAC ,%x0" ::"r"(base + i * 64));

        mb();

    }

    asm volatile("dsb st" : : : "memory");

    DRV_ATRACE_END();

}



void devdrv_flush_cache(uint64_t base, uint32_t len)

{

    uint64_t addr_loop, addr_end;

    DRV_ATRACE_BEGIN(devdrv_flush_cache);

    addr_loop = base & (~DEVDRV_CACHELINE_MASK);

    addr_end = (base + len) & (~DEVDRV_CACHELINE_MASK);



    asm volatile("dsb st" : : : "memory");

    for (; addr_loop < addr_end;) {

        asm volatile("DC CIVAC ,%x0" ::"r"(addr_loop));

        mb();

        addr_loop += DEVDRV_CACHELINE_SIZE;

    }

    asm volatile("dsb st" : : : "memory");

    DRV_ATRACE_END();

}

#else

void drvFlushCache2(uint64_t base, uint32_t len)

{

}

#endif