mirror of
https://github.com/qemu/qemu.git
synced 2025-10-26 20:31:42 +00:00
5c17ca2505
Some callers test for != 0, some for < 0. Normalize to < 0. Patchworks-ID: 35171 Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
/*
|
|
* 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);
|