source: vbox/trunk/src/VBox/Devices/PC/DrvAcpiCpu.cpp@ 100836

/* $Id: DrvAcpiCpu.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
/** @file
 * DrvAcpiCpu - ACPI CPU dummy driver for hotplugging.
 */

/*
 * Copyright (C) 2006-2023 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>.
 *
 * SPDX-License-Identifier: GPL-3.0-only
 */


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

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

#include "VBoxDD.h"


/**
 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
 */
static DECLCALLBACK(void *) drvACPICpuQueryInterface(PPDMIBASE pInterface, const char *pszIID)
{
    PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
    PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
    return NULL;
}

/**
 * Construct an ACPI CPU driver instance.
 *
 * @copydoc FNPDMDRVCONSTRUCT
 */
static DECLCALLBACK(int) drvACPICpuConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
{
    RT_NOREF(pCfg, fFlags);
    PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);

    /*
     * Init the static parts.
     */
    /* IBase */
    pDrvIns->IBase.pfnQueryInterface = drvACPICpuQueryInterface;

    /*
     * Validate the config.
     */
    PDMDRV_VALIDATE_CONFIG_RETURN(pDrvIns, "", "");

    /*
     * 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,
    /* szName */
    "ACPICpu",
    /* szRCMod */
    "",
    /* szR0Mod */
    "",
    /* pszDescription */
    "ACPI CPU Driver",
    /* fFlags */
    PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
    /* fClass. */
    PDM_DRVREG_CLASS_ACPI,
    /* cMaxInstances */
    ~0U,
    /* cbInstance */
    sizeof(PDMDRVINS),
    /* pfnConstruct */
    drvACPICpuConstruct,
    /* pfnDestruct */
    NULL,
    /* pfnRelocate */
    NULL,
    /* pfnIOCtl */
    NULL,
    /* pfnPowerOn */
    NULL,
    /* pfnReset */
    NULL,
    /* pfnSuspend */
    NULL,
    /* pfnResume */
    NULL,
    /* pfnAttach */
    NULL,
    /* pfnDetach */
    NULL,
    /* pfnPowerOff */
    NULL,
    /* pfnSoftReset */
    NULL,
    /* u32EndVersion */
    PDM_DRVREG_VERSION
};