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/* $Id$ */
/** @file
* IPRT - Multiprocessor, Ring-0 Driver, Haiku.
*/
/*
* Copyright (C) 2012-2022 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;
}
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