125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
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/*
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* ide bus support for qdev.
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*
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* Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <hw/hw.h>
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#include "sysemu.h"
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#include "dma.h"
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#include <hw/ide/internal.h>
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/* --------------------------------- */
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static struct BusInfo ide_bus_info = {
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.name = "IDE",
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.size = sizeof(IDEBus),
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};
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IDEBus *ide_bus_new(DeviceState *dev)
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{
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IDEBus *idebus;
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idebus = FROM_QBUS(IDEBus, qbus_create(&ide_bus_info, dev, NULL));
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return idebus;
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}
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static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)
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{
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IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev);
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IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);
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IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
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if (!dev->dinfo) {
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fprintf(stderr, "%s: no drive specified\n", qdev->info->name);
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goto err;
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}
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if (dev->unit == -1) {
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dev->unit = bus->master ? 1 : 0;
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}
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switch (dev->unit) {
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case 0:
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if (bus->master) {
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fprintf(stderr, "ide: tried to assign master twice\n");
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goto err;
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}
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bus->master = dev;
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break;
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case 1:
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if (bus->slave) {
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fprintf(stderr, "ide: tried to assign slave twice\n");
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goto err;
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}
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bus->slave = dev;
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break;
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default:
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goto err;
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}
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return info->init(dev);
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err:
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return -1;
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}
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static void ide_qdev_register(IDEDeviceInfo *info)
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{
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info->qdev.init = ide_qdev_init;
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info->qdev.bus_info = &ide_bus_info;
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qdev_register(&info->qdev);
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}
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IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
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{
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DeviceState *dev;
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dev = qdev_create(&bus->qbus, "ide-drive");
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qdev_prop_set_uint32(dev, "unit", unit);
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qdev_prop_set_drive(dev, "drive", drive);
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if (qdev_init(dev) != 0)
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return NULL;
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return DO_UPCAST(IDEDevice, qdev, dev);
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}
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/* --------------------------------- */
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typedef struct IDEDrive {
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IDEDevice dev;
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} IDEDrive;
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static int ide_drive_initfn(IDEDevice *dev)
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{
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IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
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ide_init_drive(bus->ifs + dev->unit, dev->dinfo);
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return 0;
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}
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static IDEDeviceInfo ide_drive_info = {
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.qdev.name = "ide-drive",
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.qdev.size = sizeof(IDEDrive),
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.init = ide_drive_initfn,
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.qdev.props = (Property[]) {
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DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1),
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DEFINE_PROP_DRIVE("drive", IDEDrive, dev.dinfo),
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DEFINE_PROP_END_OF_LIST(),
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}
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};
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static void ide_drive_register(void)
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{
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ide_qdev_register(&ide_drive_info);
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}
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device_init(ide_drive_register);
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