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Diffstat (limited to 'src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c')
-rw-r--r--src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c322
1 files changed, 322 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..0605fd05
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/freebsd/mp-r0drv-freebsd.c
@@ -0,0 +1,322 @@
+/* $Id: mp-r0drv-freebsd.c $ */
+/** @file
+ * IPRT - Multiprocessor, Ring-0 Driver, FreeBSD.
+ */
+
+/*
+ * Copyright (C) 2008-2023 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-freebsd-kernel.h"
+
+#include <iprt/mp.h>
+#include <iprt/err.h>
+#include <iprt/asm.h>
+#include <iprt/cpuset.h>
+#include "r0drv/mp-r0drv.h"
+
+
+#if __FreeBSD_version < 1200028
+# define smp_no_rendezvous_barrier smp_no_rendevous_barrier
+#endif
+
+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_rendezvous_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_rendezvous_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_rendezvous_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_rendezvous_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;
+}
+
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