VMM/VMMAll/PDMAll.cpp

	PDMAll.cpp revision 675f16ba1814ff54bdf00391a6d126a25963f88a
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/* $Id$ */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/** @file
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * PDM Critical Sections
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/*
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * available from http://www.virtualbox.org. This file is free software;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * you can redistribute it and/or modify it under the terms of the GNU
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * General Public License (GPL) as published by the Free Software
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * additional information or have any questions.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/*******************************************************************************
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync*   Header Files                                                               *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync*******************************************************************************/
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#define LOG_GROUP LOG_GROUP_PDM
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include "PDMInternal.h"
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <VBox/pdm.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <VBox/mm.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <VBox/vm.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <VBox/err.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <VBox/log.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <iprt/asm.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#include <iprt/assert.h>
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/**
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Gets the pending interrupt.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @returns VBox status code.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pVM             VM handle.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pu8Interrupt    Where to store the interrupt on success.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsyncPDMDECL(int) PDMGetInterrupt(PVM pVM, uint8_t *pu8Interrupt)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync{
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    pdmLock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    /*
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync     * The local APIC has a higer priority than the PIC.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync     */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    if (VM_FF_ISSET(pVM, VM_FF_INTERRUPT_APIC))
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        VM_FF_CLEAR(pVM, VM_FF_INTERRUPT_APIC);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pfnGetInterrupt));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        int i = pVM->pdm.s.Apic.CTXALLSUFF(pfnGetInterrupt)(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        AssertMsg(i <= 255 && i >= 0, ("i=%d\n", i));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        if (i >= 0)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync            pdmUnlock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync            *pu8Interrupt = (uint8_t)i;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync            return VINF_SUCCESS;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        }
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    }
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    /*
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync     * Check the PIC.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync     */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    if (VM_FF_ISSET(pVM, VM_FF_INTERRUPT_PIC))
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        VM_FF_CLEAR(pVM, VM_FF_INTERRUPT_PIC);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.Pic.CTXALLSUFF(pDevIns));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.Pic.CTXALLSUFF(pfnGetInterrupt));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        int i = pVM->pdm.s.Pic.CTXALLSUFF(pfnGetInterrupt)(pVM->pdm.s.Pic.CTXALLSUFF(pDevIns));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        AssertMsg(i <= 255 && i >= 0, ("i=%d\n", i));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        if (i >= 0)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync            pdmUnlock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync            *pu8Interrupt = (uint8_t)i;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync            return VINF_SUCCESS;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        }
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    }
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    /** @todo Figure out exactly why we can get here without anything being set. (REM) */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    pdmUnlock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    return VERR_NO_DATA;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync}
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync/**
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync * Sets the pending interrupt.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync * @returns VBox status code.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pVM             VM handle.
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync * @param   u8Irq           The IRQ line.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   u8Level         The new level.
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsyncPDMDECL(int) PDMIsaSetIrq(PVM pVM, uint8_t u8Irq, uint8_t u8Level)
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync{
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    pdmLock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync    int rc = VERR_PDM_NO_PIC_INSTANCE;
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync    if (pVM->pdm.s.Pic.CTXALLSUFF(pDevIns))
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.Pic.CTXALLSUFF(pfnSetIrq));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        pVM->pdm.s.Pic.CTXALLSUFF(pfnSetIrq)(pVM->pdm.s.Pic.CTXALLSUFF(pDevIns), u8Irq, u8Level);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        rc = VINF_SUCCESS;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    }
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    if (pVM->pdm.s.IoApic.CTXALLSUFF(pDevIns))
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.IoApic.CTXALLSUFF(pfnSetIrq));
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        pVM->pdm.s.IoApic.CTXALLSUFF(pfnSetIrq)(pVM->pdm.s.IoApic.CTXALLSUFF(pDevIns), u8Irq, u8Level);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        rc = VINF_SUCCESS;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    }
dc45a8f3e936581748c248e00ce572cfe3ea331evboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    pdmUnlock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    return rc;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync}
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/**
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Sets the pending I/O APIC interrupt.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @returns VBox status code.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pVM             VM handle.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   u8Irq           The IRQ line.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   u8Level         The new level.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsyncPDMDECL(int) PDMIoApicSetIrq(PVM pVM, uint8_t u8Irq, uint8_t u8Level)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync{
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    if (pVM->pdm.s.IoApic.CTXALLSUFF(pDevIns))
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.IoApic.CTXALLSUFF(pfnSetIrq));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmLock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        pVM->pdm.s.IoApic.CTXALLSUFF(pfnSetIrq)(pVM->pdm.s.IoApic.CTXALLSUFF(pDevIns), u8Irq, u8Level);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        pdmUnlock(pVM);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        return VINF_SUCCESS;
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    }
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    return VERR_PDM_NO_PIC_INSTANCE;
87c5113417e917cdf64545d4f8e0a27047cea783vboxsync}
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync/**
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * Set the APIC base.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @returns VBox status code.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pVM             VM handle.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   u64Base         The new base.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsyncPDMDECL(int) PDMApicSetBase(PVM pVM, uint64_t u64Base)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync{
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    if (pVM->pdm.s.Apic.CTXALLSUFF(pDevIns))
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pfnSetBase));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmLock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pVM->pdm.s.Apic.CTXALLSUFF(pfnSetBase)(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns), u64Base);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmUnlock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        return VINF_SUCCESS;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    }
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    return VERR_PDM_NO_APIC_INSTANCE;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync}
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync/**
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * Get the APIC base.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync *
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @returns VBox status code.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pVM             VM handle.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pu64Base        Where to store the APIC base.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync */
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsyncPDMDECL(int) PDMApicGetBase(PVM pVM, uint64_t *pu64Base)
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync{
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    if (pVM->pdm.s.Apic.CTXALLSUFF(pDevIns))
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    {
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pfnGetBase));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmLock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        *pu64Base = pVM->pdm.s.Apic.CTXALLSUFF(pfnGetBase)(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmUnlock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        return VINF_SUCCESS;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    }
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    *pu64Base = 0;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    return VERR_PDM_NO_APIC_INSTANCE;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync}
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync/**
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * Check if the APIC has a pending interrupt/if a TPR change would active one
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync *
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @returns Pending interrupt yes/no
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pDevIns         Device instance of the APIC.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pfPending       Pending state (out)
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync */
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsyncPDMDECL(int) PDMApicHasPendingIrq(PVM pVM, bool *pfPending)
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync{
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    if (pVM->pdm.s.Apic.CTXALLSUFF(pDevIns))
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    {
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pfnSetTPR));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmLock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        *pfPending = pVM->pdm.s.Apic.CTXALLSUFF(pfnHasPendingIrq)(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmUnlock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        return VINF_SUCCESS;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    }
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    return VERR_PDM_NO_APIC_INSTANCE;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync}
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync/**
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * Set the TPR (task priority register?).
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync *
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @returns VBox status code.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pVM             VM handle.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   u8TPR           The new TPR.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync */
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsyncPDMDECL(int) PDMApicSetTPR(PVM pVM, uint8_t u8TPR)
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync{
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    if (pVM->pdm.s.Apic.CTXALLSUFF(pDevIns))
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    {
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pfnSetTPR));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmLock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pVM->pdm.s.Apic.CTXALLSUFF(pfnSetTPR)(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns), u8TPR);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmUnlock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        return VINF_SUCCESS;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    }
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    return VERR_PDM_NO_APIC_INSTANCE;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync}
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync/**
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * Get the TPR (task priority register?).
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync *
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @returns The current TPR.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pVM             VM handle.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pu8TPR          Where to store the TRP.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync */
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsyncPDMDECL(int) PDMApicGetTPR(PVM pVM, uint8_t *pu8TPR)
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync{
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    if (pVM->pdm.s.Apic.CTXALLSUFF(pDevIns))
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    {
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        Assert(pVM->pdm.s.Apic.CTXALLSUFF(pfnGetTPR));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmLock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        *pu8TPR = pVM->pdm.s.Apic.CTXALLSUFF(pfnGetTPR)(pVM->pdm.s.Apic.CTXALLSUFF(pDevIns));
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        pdmUnlock(pVM);
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync        return VINF_SUCCESS;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    }
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    *pu8TPR = 0;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    return VERR_PDM_NO_APIC_INSTANCE;
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync}
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync/**
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * Locks PDM.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * This might call back to Ring-3 in order to deal with lock contention in GC and R3.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync *
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync * @param   pVM     The VM handle.
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync */
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsyncvoid pdmLock(PVM pVM)
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync{
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync#ifdef IN_RING3
50671c30431539dd7d6ff6a5f2ceb6c9f9f471b2vboxsync    int rc = PDMCritSectEnter(&pVM->pdm.s.CritSect, VERR_INTERNAL_ERROR);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#else
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    int rc = PDMCritSectEnter(&pVM->pdm.s.CritSect, VERR_GENERAL_FAILURE);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    if (rc == VERR_GENERAL_FAILURE)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    {
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync# ifdef IN_GC
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        rc = VMMGCCallHost(pVM, VMMCALLHOST_PDM_LOCK, 0);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync# else
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync        rc = VMMR0CallHost(pVM, VMMCALLHOST_PDM_LOCK, 0);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync# endif
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    }
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync#endif
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    AssertRC(rc);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync}
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/**
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Locks PDM but don't go to ring-3 if it's owned by someone.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @returns VINF_SUCCESS on success.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @returns rc if we're in GC or R0 and can't get the lock.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pVM     The VM handle.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   rc      The RC to return in GC or R0 when we can't get the lock.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsyncint pdmLockEx(PVM pVM, int rc)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync{
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    return PDMCritSectEnter(&pVM->pdm.s.CritSect, rc);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync}
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync/**
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * Unlocks PDM.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync *
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync * @param   pVM     The VM handle.
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync */
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsyncvoid pdmUnlock(PVM pVM)
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync{
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync    PDMCritSectLeave(&pVM->pdm.s.CritSect);
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync}
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync
9888fffcfbe2d41dce14a1249b12cb88cc9b149fvboxsync