/* $Id: mp-r0drv-haiku.c $ */ /** @file * IPRT - Multiprocessor, Ring-0 Driver, Haiku. */ /* * Copyright (C) 2012-2019 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #include "the-haiku-kernel.h" #include <iprt/mp.h> #include <iprt/err.h> #include <iprt/asm.h> #include <iprt/cpuset.h> #include "r0drv/mp-r0drv.h" RTDECL(RTCPUID) RTMpCpuId(void) { return smp_get_current_cpu(); } RTDECL(int) RTMpCurSetIndex(void) { return smp_get_current_cpu(); } RTDECL(int) RTMpCurSetIndexAndId(PRTCPUID pidCpu) { return *pidCpu = smp_get_current_cpu(); } RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu) { return idCpu < smp_get_num_cpus() ? (int)idCpu : -1; } RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu) { return (unsigned)iCpu < smp_get_num_cpus() ? (RTCPUID)iCpu : NIL_RTCPUID; } RTDECL(RTCPUID) RTMpGetMaxCpuId(void) { return smp_get_num_cpus() - 1; } RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu) { return idCpu < smp_get_num_cpus(); } RTDECL(PRTCPUSET) RTMpGetSet(PRTCPUSET pSet) { RTCPUID idCpu; RTCpuSetEmpty(pSet); idCpu = RTMpGetMaxCpuId(); do { if (RTMpIsCpuPossible(idCpu)) RTCpuSetAdd(pSet, idCpu); } while (idCpu-- > 0); return pSet; } RTDECL(RTCPUID) RTMpGetCount(void) { return smp_get_num_cpus(); } RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu) { return idCpu < smp_get_num_cpus(); /** @todo FixMe && !CPU_ABSENT(idCpu) */ } RTDECL(PRTCPUSET) RTMpGetOnlineSet(PRTCPUSET pSet) { RTCPUID idCpu; RTCpuSetEmpty(pSet); idCpu = RTMpGetMaxCpuId(); do { if (RTMpIsCpuOnline(idCpu)) RTCpuSetAdd(pSet, idCpu); } while (idCpu-- > 0); return pSet; } RTDECL(RTCPUID) RTMpGetOnlineCount(void) { return smp_get_num_cpus(); } /** * Wrapper between the native Haiku per-cpu callback and PFNRTWORKER * for the RTMpOnAll API. * * @param pvArg Pointer to the RTMPARGS package. */ static void rtmpOnAllHaikuWrapper(void *pvArg, int current) { PRTMPARGS pArgs = (PRTMPARGS)pvArg; pArgs->pfnWorker(current, pArgs->pvUser1, pArgs->pvUser2); } RTDECL(int) RTMpOnAll(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2) { RTMPARGS Args; Args.pfnWorker = pfnWorker; Args.pvUser1 = pvUser1; Args.pvUser2 = pvUser2; Args.idCpu = NIL_RTCPUID; Args.cHits = 0; /* is _sync needed ? */ call_all_cpus_sync(rtmpOnAllHaikuWrapper, &Args); return VINF_SUCCESS; } /** * Wrapper between the native Haiku per-cpu callback and PFNRTWORKER * for the RTMpOnOthers API. * * @param pvArg Pointer to the RTMPARGS package. */ static void rtmpOnOthersHaikuWrapper(void *pvArg, int current) { PRTMPARGS pArgs = (PRTMPARGS)pvArg; RTCPUID idCpu = current; if (pArgs->idCpu != idCpu) pArgs->pfnWorker(idCpu, pArgs->pvUser1, pArgs->pvUser2); } RTDECL(int) RTMpOnOthers(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2) { /* Will panic if no rendezvousing cpus, so check up front. */ if (RTMpGetOnlineCount() > 1) { RTMPARGS Args; Args.pfnWorker = pfnWorker; Args.pvUser1 = pvUser1; Args.pvUser2 = pvUser2; Args.idCpu = RTMpCpuId(); Args.cHits = 0; /* is _sync needed ? */ call_all_cpus_sync(rtmpOnOthersHaikuWrapper, &Args); } return VINF_SUCCESS; } /** * Wrapper between the native Haiku per-cpu callback and PFNRTWORKER * for the RTMpOnSpecific API. * * @param pvArg Pointer to the RTMPARGS package. */ static void rtmpOnSpecificHaikuWrapper(void *pvArg, int current) { PRTMPARGS pArgs = (PRTMPARGS)pvArg; RTCPUID idCpu = current; if (pArgs->idCpu == idCpu) { pArgs->pfnWorker(idCpu, pArgs->pvUser1, pArgs->pvUser2); ASMAtomicIncU32(&pArgs->cHits); } } RTDECL(int) RTMpOnSpecific(RTCPUID idCpu, PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2) { RTMPARGS Args; /* Will panic if no rendezvousing cpus, so make sure the cpu is online. */ if (!RTMpIsCpuOnline(idCpu)) return VERR_CPU_NOT_FOUND; Args.pfnWorker = pfnWorker; Args.pvUser1 = pvUser1; Args.pvUser2 = pvUser2; Args.idCpu = idCpu; Args.cHits = 0; /* is _sync needed ? */ call_all_cpus_sync(rtmpOnSpecificHaikuWrapper, &Args); return Args.cHits == 1 ? VINF_SUCCESS : VERR_CPU_NOT_FOUND; } RTDECL(bool) RTMpOnAllIsConcurrentSafe(void) { return true; }