diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c')
-rw-r--r-- | src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c b/src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c new file mode 100644 index 00000000..681fbbbe --- /dev/null +++ b/src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c @@ -0,0 +1,308 @@ +/* $Id: mp-r0drv-freebsd.c $ */ +/** @file + * IPRT - Multiprocessor, Ring-0 Driver, FreeBSD. + */ + +/* + * Copyright (C) 2008-2019 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-freebsd-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 curcpu; +} + + +RTDECL(int) RTMpCurSetIndex(void) +{ + return curcpu; +} + + +RTDECL(int) RTMpCurSetIndexAndId(PRTCPUID pidCpu) +{ + return *pidCpu = curcpu; +} + + +RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu) +{ + return idCpu < RTCPUSET_MAX_CPUS && idCpu <= mp_maxid ? (int)idCpu : -1; +} + + +RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu) +{ + return (unsigned)iCpu <= mp_maxid ? (RTCPUID)iCpu : NIL_RTCPUID; +} + + +RTDECL(RTCPUID) RTMpGetMaxCpuId(void) +{ + return mp_maxid; +} + + +RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu) +{ + return idCpu <= mp_maxid; +} + + +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 mp_maxid + 1; +} + + +RTDECL(RTCPUID) RTMpGetCoreCount(void) +{ + return mp_maxid + 1; +} + +RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu) +{ + return idCpu <= mp_maxid + && !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 mp_ncpus; +} + + +/** + * Wrapper between the native FreeBSD per-cpu callback and PFNRTWORKER + * for the RTMpOnAll API. + * + * @param pvArg Pointer to the RTMPARGS package. + */ +static void rtmpOnAllFreeBSDWrapper(void *pvArg) +{ + PRTMPARGS pArgs = (PRTMPARGS)pvArg; + pArgs->pfnWorker(curcpu, 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; + smp_rendezvous(NULL, rtmpOnAllFreeBSDWrapper, smp_no_rendevous_barrier, &Args); + return VINF_SUCCESS; +} + + +/** + * Wrapper between the native FreeBSD per-cpu callback and PFNRTWORKER + * for the RTMpOnOthers API. + * + * @param pvArg Pointer to the RTMPARGS package. + */ +static void rtmpOnOthersFreeBSDWrapper(void *pvArg) +{ + PRTMPARGS pArgs = (PRTMPARGS)pvArg; + RTCPUID idCpu = curcpu; + 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) + { +#if __FreeBSD_version >= 900000 + cpuset_t Mask; +#elif __FreeBSD_version >= 700000 + cpumask_t Mask; +#endif + RTMPARGS Args; + + Args.pfnWorker = pfnWorker; + Args.pvUser1 = pvUser1; + Args.pvUser2 = pvUser2; + Args.idCpu = RTMpCpuId(); + Args.cHits = 0; +#if __FreeBSD_version >= 700000 +# if __FreeBSD_version >= 900000 + Mask = all_cpus; + CPU_CLR(curcpu, &Mask); +# else + Mask = ~(cpumask_t)curcpu; +# endif + smp_rendezvous_cpus(Mask, NULL, rtmpOnOthersFreeBSDWrapper, smp_no_rendevous_barrier, &Args); +#else + smp_rendezvous(NULL, rtmpOnOthersFreeBSDWrapper, NULL, &Args); +#endif + } + return VINF_SUCCESS; +} + + +/** + * Wrapper between the native FreeBSD per-cpu callback and PFNRTWORKER + * for the RTMpOnSpecific API. + * + * @param pvArg Pointer to the RTMPARGS package. + */ +static void rtmpOnSpecificFreeBSDWrapper(void *pvArg) +{ + PRTMPARGS pArgs = (PRTMPARGS)pvArg; + RTCPUID idCpu = curcpu; + 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) +{ +#if __FreeBSD_version >= 900000 + cpuset_t Mask; +#elif __FreeBSD_version >= 700000 + cpumask_t Mask; +#endif + 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; +#if __FreeBSD_version >= 700000 +# if __FreeBSD_version >= 900000 + CPU_SETOF(idCpu, &Mask); +# else + Mask = (cpumask_t)1 << idCpu; +# endif + smp_rendezvous_cpus(Mask, NULL, rtmpOnSpecificFreeBSDWrapper, smp_no_rendevous_barrier, &Args); +#else + smp_rendezvous(NULL, rtmpOnSpecificFreeBSDWrapper, NULL, &Args); +#endif + return Args.cHits == 1 + ? VINF_SUCCESS + : VERR_CPU_NOT_FOUND; +} + + +#if __FreeBSD_version >= 700000 +/** + * Dummy callback for RTMpPokeCpu. + * @param pvArg Ignored + */ +static void rtmpFreeBSDPokeCallback(void *pvArg) +{ + NOREF(pvArg); +} + + +RTDECL(int) RTMpPokeCpu(RTCPUID idCpu) +{ +#if __FreeBSD_version >= 900000 + cpuset_t Mask; +#elif __FreeBSD_version >= 700000 + cpumask_t Mask; +#endif + + /* Will panic if no rendezvousing cpus, so make sure the cpu is online. */ + if (!RTMpIsCpuOnline(idCpu)) + return VERR_CPU_NOT_FOUND; + +# if __FreeBSD_version >= 900000 + CPU_SETOF(idCpu, &Mask); +# else + Mask = (cpumask_t)1 << idCpu; +# endif + smp_rendezvous_cpus(Mask, NULL, rtmpFreeBSDPokeCallback, smp_no_rendevous_barrier, NULL); + + return VINF_SUCCESS; +} + +#else /* < 7.0 */ +RTDECL(int) RTMpPokeCpu(RTCPUID idCpu) +{ + return VERR_NOT_SUPPORTED; +} +#endif /* < 7.0 */ + + +RTDECL(bool) RTMpOnAllIsConcurrentSafe(void) +{ + return true; +} + |