diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/haiku/mp-r0drv-haiku.c')
| -rw-r--r-- | src/VBox/Runtime/r0drv/haiku/mp-r0drv-haiku.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/haiku/mp-r0drv-haiku.c b/src/VBox/Runtime/r0drv/haiku/mp-r0drv-haiku.c new file mode 100644 index 00000000..a9b268e1 --- /dev/null +++ b/src/VBox/Runtime/r0drv/haiku/mp-r0drv-haiku.c @@ -0,0 +1,246 @@ +/* $Id: mp-r0drv-haiku.c $ */ +/** @file + * IPRT - Multiprocessor, Ring-0 Driver, Haiku. + */ + +/* + * Copyright (C) 2012-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* 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; +} + |