Archipelago » qemu

/*

 * ide bus support for qdev.

 *

 * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see <http://www.gnu.org/licenses/>.

 */

#include <hw/hw.h>

#include "sysemu.h"

#include "dma.h"

#include <hw/ide/internal.h>

/* --------------------------------- */

static struct BusInfo ide_bus_info = {

    .name  = "IDE",

    .size  = sizeof(IDEBus),

};

void ide_bus_new(IDEBus *idebus, DeviceState *dev)

{

    qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);

}

static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)

{

    IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev);

    IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);

    IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);

    if (!dev->dinfo) {

        fprintf(stderr, "%s: no drive specified\n", qdev->info->name);

        goto err;

    }

    if (dev->unit == -1) {

        dev->unit = bus->master ? 1 : 0;

    }

    switch (dev->unit) {

    case 0:

        if (bus->master) {

            fprintf(stderr, "ide: tried to assign master twice\n");

            goto err;

        }

        bus->master = dev;

        break;

    case 1:

        if (bus->slave) {

            fprintf(stderr, "ide: tried to assign slave twice\n");

            goto err;

        }

        bus->slave = dev;

        break;

    default:

        goto err;

    }

    return info->init(dev);

err:

    return -1;

}

static void ide_qdev_register(IDEDeviceInfo *info)

{

    info->qdev.init = ide_qdev_init;

    info->qdev.bus_info = &ide_bus_info;

    qdev_register(&info->qdev);

}

IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)

{

    DeviceState *dev;

    dev = qdev_create(&bus->qbus, "ide-drive");

    qdev_prop_set_uint32(dev, "unit", unit);

    qdev_prop_set_drive(dev, "drive", drive);

    if (qdev_init(dev) < 0)

        return NULL;

    return DO_UPCAST(IDEDevice, qdev, dev);

}

/* --------------------------------- */

typedef struct IDEDrive {

    IDEDevice dev;

} IDEDrive;

static int ide_drive_initfn(IDEDevice *dev)

{

    IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);

    ide_init_drive(bus->ifs + dev->unit, dev->dinfo);

    return 0;

}

static IDEDeviceInfo ide_drive_info = {

    .qdev.name  = "ide-drive",

    .qdev.size  = sizeof(IDEDrive),

    .init       = ide_drive_initfn,

    .qdev.props = (Property[]) {

        DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1),

        DEFINE_PROP_DRIVE("drive", IDEDrive, dev.dinfo),

        DEFINE_PROP_END_OF_LIST(),

    }

};

static void ide_drive_register(void)

{

    ide_qdev_register(&ide_drive_info);

}

device_init(ide_drive_register);