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/* ----------------------------------------------------------------------------
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* Copyright (c) Huawei Technologies Co., Ltd. 2013-2019. All rights reserved.
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* Description: Hwi Shell Implementation
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* Author: Huawei LiteOS Team
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* Create: 2013-01-01
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --------------------------------------------------------------------------- */
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/*
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这个文件是针对LiteOS操作系统中的Shell命令编写的，主要实现了对硬件中断信息的获取和显示功能，
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包括了对硬件中断的共享模式、响应次数、CPU利用率等信息的获取和显示。根据操作系统配置不同，
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还包括了对CPU利用率的不同时间段（所有时间、最近10秒、最近1秒）的统计和显示。
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*/
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#include "los_config.h"
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#ifdef LOSCFG_SHELL
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#ifdef LOSCFG_CPUP_INCLUDE_IRQ
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#include "los_cpup_pri.h"
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#endif
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#include "los_hwi_pri.h"
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#include "shcmd.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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//这个函数实现了打印硬件中断信息的表头
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LITE_OS_SEC_TEXT_MINOR STATIC VOID OsShellCmdHwiInfoTitle(VOID)
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{
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#ifdef LOSCFG_CPUP_INCLUDE_IRQ
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PRINTK("InterruptNo Share ResponseCount CYCLECOST CPUUSE CPUUSE10s CPUUSE1s Name"
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" DevId\n");
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PRINTK("----------- ----- ------------- --------- ------ --------- -------- ---------"
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" --------\n");
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#else
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PRINTK("InterruptNo Share ResponseCount Name DevId\n");
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PRINTK("----------- ----- ------------- --------- --------\n");
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#endif
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}
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//这个函数会根据传入的硬件中断句柄信息，获取该中断是否为共享模式
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STATIC BOOL GetHwiShare(const HwiHandleInfo *hwiForm)
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{
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#ifndef LOSCFG_SHARED_IRQ
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return false;
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#else
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return (hwiForm->shareMode);
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#endif
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}
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#ifdef LOSCFG_CPUP_INCLUDE_IRQ
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STATIC CPUP_INFO_S g_hwiCpupAll[LOSCFG_PLATFORM_HWI_LIMIT];//所有时间段CPU利用率的统计信息
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STATIC CPUP_INFO_S g_hwiCpup10s[LOSCFG_PLATFORM_HWI_LIMIT];//最近10sCPU利用率的统计信息
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STATIC CPUP_INFO_S g_hwiCpup1s[LOSCFG_PLATFORM_HWI_LIMIT];//最近1sCPU利用率的统计信息
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//这个函数实现了硬件中断信息的查询，根据参数argc和argv判断是否有误，并调用其他函数获取硬件中断的各项信息，最终打印输出硬件中断的详细信息。
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LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdHwi(INT32 argc, const CHAR **argv)
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{
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UINT32 i, intSave;
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UINT64 cycles = 0;
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size_t size = sizeof(CPUP_INFO_S) * LOSCFG_PLATFORM_HWI_LIMIT;
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HwiHandleInfo *hwiForm = NULL;
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(VOID)argv;
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//打印错误信息
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if (argc > 0) {
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PRINTK("\nUsage: hwi\n");
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return OS_ERROR;
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}
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(VOID)memset_s(g_hwiCpupAll, size, 0, size);//置零
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(VOID)memset_s(g_hwiCpup10s, size, 0, size);//置零
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(VOID)memset_s(g_hwiCpup1s, size, 0, size);//置零
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intSave = LOS_IntLock();
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(VOID)LOS_AllCpuUsage(LOSCFG_PLATFORM_HWI_LIMIT, g_hwiCpupAll, CPUP_ALL_TIME, 0);
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(VOID)LOS_AllCpuUsage(LOSCFG_PLATFORM_HWI_LIMIT, g_hwiCpup10s, CPUP_LAST_TEN_SECONDS, 0);
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(VOID)LOS_AllCpuUsage(LOSCFG_PLATFORM_HWI_LIMIT, g_hwiCpup1s, CPUP_LAST_ONE_SECONDS, 0);
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LOS_IntRestore(intSave);
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//打印硬件中断信息的表头
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OsShellCmdHwiInfoTitle();
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//打印CPU硬件中断的利用率
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for (i = 0; i < LOSCFG_PLATFORM_HWI_LIMIT; i++) {
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if (!HWI_IS_REGISTED(i)) {
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continue;
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}
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if (OsGetHwiFormCnt(i)) {
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cycles = (OsCpupCBGet(g_taskMaxNum + i))->allTime / OsGetHwiFormCnt(i);
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}
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/* Different cores has different hwi form implementation */
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//打印各个时间内的硬件中断利用率
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hwiForm = OsGetHwiForm(i);
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PRINTK("%-8u\t %-s\t %-10u\t %-10llu %2u.%-7u %2u.%-7u %2u.%-6u",
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i, GetHwiShare(hwiForm) ? "Y" : "N", OsGetHwiFormCnt(i), cycles,
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g_hwiCpupAll[i].uwUsage / LOS_CPUP_PRECISION_MULT, g_hwiCpupAll[i].uwUsage % LOS_CPUP_PRECISION_MULT,
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g_hwiCpup10s[i].uwUsage / LOS_CPUP_PRECISION_MULT, g_hwiCpup10s[i].uwUsage % LOS_CPUP_PRECISION_MULT,
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g_hwiCpup1s[i].uwUsage / LOS_CPUP_PRECISION_MULT, g_hwiCpup1s[i].uwUsage % LOS_CPUP_PRECISION_MULT);
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#ifdef LOSCFG_SHARED_IRQ
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hwiForm = hwiForm->next;
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#endif
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//打印中断设备ID和信息
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if ((hwiForm->registerInfo != 0) && ((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pName != NULL) {
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PRINTK("\t %-16s 0x%-.8x\n",
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pName,
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pDevId);
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} else {
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PRINTK("\n");
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}
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#ifdef LOSCFG_SHARED_IRQ
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while ((hwiForm = hwiForm->next) != NULL) {
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PRINTK("\t\t\t\t\t\t\t\t\t\t\t\t %-16s 0x%-.8x\n",
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pName,
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pDevId);
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}
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#endif
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}
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return 0;
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}
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#else
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//这个函数主要实现对hwi命令的解释功能，输出硬件中断信息
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LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdHwi(INT32 argc, const CHAR **argv)
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{
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UINT32 i;
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HwiHandleInfo *hwiForm = NULL;
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//参数错误，打印错误信息
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(VOID)argv;
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if (argc > 0) {
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PRINTK("\nUsage: hwi\n");
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return OS_ERROR;
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}
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//打印硬件中断信息的表头
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OsShellCmdHwiInfoTitle();
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//遍历所有硬件中断寄存器
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for (i = 0; i < LOSCFG_PLATFORM_HWI_LIMIT; i++) {
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if (!HWI_IS_REGISTED(i)) {
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continue;
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}
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/* Different cores has different hwi form implementation */
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//输出信息
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hwiForm = OsGetHwiForm(i);
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PRINTK("%-8u\t %-s\t %-10u", i, GetHwiShare(hwiForm) ? "Y" : "N", OsGetHwiFormCnt(i));
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#ifdef LOSCFG_SHARED_IRQ
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hwiForm = hwiForm->next;
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#endif
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if ((hwiForm->registerInfo != 0) && ((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pName != NULL) {
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PRINTK("\t %-16s 0x%-.8x\n",
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pName,
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pDevId);
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} else {
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PRINTK("\n");
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}
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#ifdef LOSCFG_SHARED_IRQ
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while ((hwiForm = hwiForm->next) != NULL) {
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PRINTK("\t\t\t\t\t %-16s 0x%-.8x\n",
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pName,
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((HWI_IRQ_PARAM_S *)hwiForm->registerInfo)->pDevId);
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}
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#endif
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}
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return 0;
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}
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#endif
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//该函数实现了OsShellCmdHwi的函数调用，用户可以输入hwi命令来调用该函数，从而查询和展示硬件中断信息
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SHELLCMD_ENTRY(hwi_shellcmd, CMD_TYPE_EX, "hwi", 0, (CmdCallBackFunc)OsShellCmdHwi);
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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#endif /* LOSCFG_SHELL */
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