| 1 | /* $Id: mp-r0drv-darwin.cpp 8245 2008-04-21 17:24:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Multiprocessor, Ring-0 Driver, FreeBSD.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2008 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include "the-freebsd-kernel.h"
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| 36 |
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| 37 | #include <iprt/mp.h>
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| 38 | #include <iprt/err.h>
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| 39 | #include <iprt/asm.h>
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| 40 | #include "r0drv/mp-r0drv.h"
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| 41 |
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| 42 |
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| 43 | RTDECL(RTCPUID) RTMpCpuId(void)
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| 44 | {
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| 45 | return curcpu; /** @todo is this right? */
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| 46 | }
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| 47 |
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| 48 |
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| 49 | /**
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| 50 | * Wrapper between the native FreeBSD per-cpu callback and PFNRTWORKER
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| 51 | * for the RTMpOnAll API.
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| 52 | *
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| 53 | * @param pvArg Pointer to the RTMPARGS package.
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| 54 | */
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| 55 | static void rtmpOnAllFreeBSDWrapper(void *pvArg)
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| 56 | {
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| 57 | PRTMPARGS pArgs = (PRTMPARGS)pvArg;
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| 58 | pArgs->pfnWorker(cpu_number(), pArgs->pvUser1, pArgs->pvUser2);
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| 59 | }
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| 60 |
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| 61 |
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| 62 | RTDECL(int) RTMpOnAll(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
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| 63 | {
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| 64 | RTMPARGS Args;
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| 65 | Args.pfnWorker = pfnWorker;
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| 66 | Args.pvUser1 = pvUser1;
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| 67 | Args.pvUser2 = pvUser2;
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| 68 | Args.idCpu = NIL_RTCPUID;
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| 69 | Args.cHits = 0;
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| 70 | smp_rendezvous(NULL, rtmpOnAllFreeBSDWrapper, NULL, &Args);
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| 71 | return VINF_SUCCESS;
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| 72 | }
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| 73 |
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| 74 |
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| 75 | /**
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| 76 | * Wrapper between the native FreeBSD per-cpu callback and PFNRTWORKER
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| 77 | * for the RTMpOnOthers API.
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| 78 | *
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| 79 | * @param pvArg Pointer to the RTMPARGS package.
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| 80 | */
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| 81 | static void rtmpOnOthersFreeBSDWrapper(void *pvArg)
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| 82 | {
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| 83 | PRTMPARGS pArgs = (PRTMPARGS)pvArg;
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| 84 | RTCPUID idCpu = cpu_number();
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| 85 | if (pArgs->idCpu != idCpu)
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| 86 | pArgs->pfnWorker(idCpu, pArgs->pvUser1, pArgs->pvUser2);
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| 87 | }
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| 88 |
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| 89 |
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| 90 | RTDECL(int) RTMpOnOthers(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
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| 91 | {
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| 92 | int rc;
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| 93 | RTMPARGS Args;
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| 94 | Args.pfnWorker = pfnWorker;
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| 95 | Args.pvUser1 = pvUser1;
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| 96 | Args.pvUser2 = pvUser2;
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| 97 | Args.idCpu = NIL_RTCPUID;
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| 98 | Args.cHits = 0;
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| 99 | smp_rendezvous(NULL, rtmpOnOthersFreeBSDWrapper, NULL, &Args);
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| 100 | return VINF_SUCCESS;
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| 101 | }
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| 102 |
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| 103 |
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| 104 | /**
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| 105 | * Wrapper between the native FreeBSD per-cpu callback and PFNRTWORKER
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| 106 | * for the RTMpOnSpecific API.
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| 107 | *
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| 108 | * @param pvArg Pointer to the RTMPARGS package.
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| 109 | */
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| 110 | static void rtmpOnSpecificFreeBSDWrapper(void *pvArg)
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| 111 | {
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| 112 | PRTMPARGS pArgs = (PRTMPARGS)pvArg;
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| 113 | RTCPUID idCpu = cpu_number();
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| 114 | if (pArgs->idCpu == idCpu)
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| 115 | {
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| 116 | pArgs->pfnWorker(idCpu, pArgs->pvUser1, pArgs->pvUser2);
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| 117 | ASMAtomicIncU32(&pArgs->cHits);
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| 118 | }
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| 119 | }
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| 120 |
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| 121 |
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| 122 | RTDECL(int) RTMpOnSpecific(RTCPUID idCpu, PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
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| 123 | {
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| 124 | int rc;
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| 125 | RTMPARGS Args;
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| 126 | Args.pfnWorker = pfnWorker;
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| 127 | Args.pvUser1 = pvUser1;
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| 128 | Args.pvUser2 = pvUser2;
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| 129 | Args.idCpu = idCpu;
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| 130 | Args.cHits = 0;
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| 131 | smp_rendezvous(NULL, rtmpOnSpecificFreeBSDWrapper, NULL, &Args);
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| 132 | return Args.cHits == 1
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| 133 | ? VINF_SUCCESS
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| 134 | : VERR_CPU_NOT_FOUND;
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| 135 | }
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| 136 |
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