Devices/PC/DrvAcpiCpu.cpp

	DrvAcpiCpu.cpp revision eb90548e8e40e597d65cdcc16ec958a3e09c1d73
/* $Id$ */
/** @file
 * DrvAcpiCpu - ACPI CPU dummy driver for hotplugging.
 */

/*
 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
 *
 * 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.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 USA or visit http://www.sun.com if you need
 * additional information or have any questions.
 */

/*******************************************************************************
*   Header Files                                                               *
*******************************************************************************/
#define LOG_GROUP LOG_GROUP_DRV_ACPI

#include <VBox/pdmdrv.h>
#include <VBox/log.h>
#include <iprt/assert.h>
#include <iprt/string.h>

#include "Builtins.h"

/**
 * Queries an interface to the driver.
 *
 * @returns Pointer to interface.
 * @returns NULL if the interface was not supported by the driver.
 * @param   pInterface          Pointer to this interface structure.
 * @param   enmInterface        The requested interface identification.
 * @thread  Any thread.
 */
static DECLCALLBACK(void *) drvACPICpuQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
{
    PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);

    switch (enmInterface)
    {
        case PDMINTERFACE_BASE:
            return &pDrvIns->IBase;
        default:
            return NULL;
    }
}

/**
 * Destruct a driver instance.
 *
 * Most VM resources are freed by the VM. This callback is provided so that any non-VM
 * resources can be freed correctly.
 *
 * @param   pDrvIns     The driver instance data.
 */
static DECLCALLBACK(void) drvACPICpuDestruct(PPDMDRVINS pDrvIns)
{
    LogFlow(("drvACPICpuDestruct\n"));
}

/**
 * Construct an ACPI CPU driver instance.
 *
 * @copydoc FNPDMDRVCONSTRUCT
 */
static DECLCALLBACK(int) drvACPICpuConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle, uint32_t fFlags)
{
    /*
     * Init the static parts.
     */
    /* IBase */
    pDrvIns->IBase.pfnQueryInterface = drvACPICpuQueryInterface;

    /*
     * Validate the config.
     */
    if (!CFGMR3AreValuesValid(pCfgHandle, "\0"))
        return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;

    /*
     * Check that no-one is attached to us.
     */
    AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
                    ("Configuration error: Not possible to attach anything to this driver!\n"),
                    VERR_PDM_DRVINS_NO_ATTACH);

    return VINF_SUCCESS;
}

/**
 * ACPI CPU driver registration record.
 */
const PDMDRVREG g_DrvAcpiCpu =
{
    /* u32Version */
    PDM_DRVREG_VERSION,
    /* szDriverName */
    "ACPICpu",
    /* pszDescription */
    "ACPI CPU Driver",
    /* fFlags */
    PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
    /* fClass. */
    PDM_DRVREG_CLASS_ACPI,
    /* cMaxInstances */
    ~0,
    /* cbInstance */
    sizeof(PDMDRVINS),
    /* pfnConstruct */
    drvACPICpuConstruct,
    /* pfnDestruct */
    drvACPICpuDestruct,
    /* pfnIOCtl */
    NULL,
    /* pfnPowerOn */
    NULL,
    /* pfnReset */
    NULL,
    /* pfnSuspend */
    NULL,
    /* pfnResume */
    NULL,
    /* pfnAttach */
    NULL,
    /* pfnDetach */
    NULL,
    /* pfnPowerOff */
    NULL,
    /* pfnSoftReset */
    NULL,
    /* u32EndVersion */
    PDM_DRVREG_VERSION
};