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/*
* 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 "dma.h"
#include "qemu-error.h"
#include <hw/ide/internal.h>
#include "blockdev.h"
#include "sysemu.h"
/* --------------------------------- */
static char *idebus_get_fw_dev_path(DeviceState *dev);
static struct BusInfo ide_bus_info = {
.name = "IDE",
.size = sizeof(IDEBus),
.get_fw_dev_path = idebus_get_fw_dev_path,
};
void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id)
{
qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);
idebus->bus_id = bus_id;
}
static char *idebus_get_fw_dev_path(DeviceState *dev)
{
char path[30];
snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev),
((IDEBus*)dev->parent_bus)->bus_id);
return strdup(path);
}
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->conf.bs) {
error_report("No drive specified");
goto err;
}
if (dev->unit == -1) {
dev->unit = bus->master ? 1 : 0;
}
switch (dev->unit) {
case 0:
if (bus->master) {
error_report("IDE unit %d is in use", dev->unit);
goto err;
}
bus->master = dev;
break;
case 1:
if (bus->slave) {
error_report("IDE unit %d is in use", dev->unit);
goto err;
}
bus->slave = dev;
break;
default:
error_report("Invalid IDE unit %d", dev->unit);
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, drive->media_cd ? "ide-cd" : "ide-hd");
qdev_prop_set_uint32(dev, "unit", unit);
qdev_prop_set_drive_nofail(dev, "drive", drive->bdrv);
qdev_init_nofail(dev);
return DO_UPCAST(IDEDevice, qdev, dev);
}
void ide_get_bs(BlockDriverState *bs[], BusState *qbus)
{
IDEBus *bus = DO_UPCAST(IDEBus, qbus, qbus);
bs[0] = bus->master ? bus->master->conf.bs : NULL;
bs[1] = bus->slave ? bus->slave->conf.bs : NULL;
}
/* --------------------------------- */
typedef struct IDEDrive {
IDEDevice dev;
} IDEDrive;
static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
{
IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
IDEState *s = bus->ifs + dev->unit;
const char *serial;
DriveInfo *dinfo;
if (dev->conf.discard_granularity && dev->conf.discard_granularity != 512) {
error_report("discard_granularity must be 512 for ide");
return -1;
}
serial = dev->serial;
if (!serial) {
/* try to fall back to value set with legacy -drive serial=... */
dinfo = drive_get_by_blockdev(dev->conf.bs);
if (*dinfo->serial) {
serial = dinfo->serial;
}
}
if (ide_init_drive(s, dev->conf.bs, kind, dev->version, serial) < 0) {
return -1;
}
if (!dev->version) {
dev->version = qemu_strdup(s->version);
}
if (!dev->serial) {
dev->serial = qemu_strdup(s->drive_serial_str);
}
add_boot_device_path(dev->conf.bootindex, &dev->qdev,
dev->unit ? "/disk@1" : "/disk@0");
return 0;
}
static int ide_hd_initfn(IDEDevice *dev)
{
return ide_dev_initfn(dev, IDE_HD);
}
static int ide_cd_initfn(IDEDevice *dev)
{
return ide_dev_initfn(dev, IDE_CD);
}
static int ide_drive_initfn(IDEDevice *dev)
{
DriveInfo *dinfo = drive_get_by_blockdev(dev->conf.bs);
return ide_dev_initfn(dev, dinfo->media_cd ? IDE_CD : IDE_HD);
}
#define DEFINE_IDE_DEV_PROPERTIES() \
DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1), \
DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
DEFINE_PROP_STRING("serial", IDEDrive, dev.serial)
static IDEDeviceInfo ide_dev_info[] = {
{
.qdev.name = "ide-hd",
.qdev.fw_name = "drive",
.qdev.desc = "virtual IDE disk",
.qdev.size = sizeof(IDEDrive),
.init = ide_hd_initfn,
.qdev.props = (Property[]) {
DEFINE_IDE_DEV_PROPERTIES(),
DEFINE_PROP_END_OF_LIST(),
}
},{
.qdev.name = "ide-cd",
.qdev.fw_name = "drive",
.qdev.desc = "virtual IDE CD-ROM",
.qdev.size = sizeof(IDEDrive),
.init = ide_cd_initfn,
.qdev.props = (Property[]) {
DEFINE_IDE_DEV_PROPERTIES(),
DEFINE_PROP_END_OF_LIST(),
}
},{
.qdev.name = "ide-drive", /* legacy -device ide-drive */
.qdev.fw_name = "drive",
.qdev.desc = "virtual IDE disk or CD-ROM (legacy)",
.qdev.size = sizeof(IDEDrive),
.init = ide_drive_initfn,
.qdev.props = (Property[]) {
DEFINE_IDE_DEV_PROPERTIES(),
DEFINE_PROP_END_OF_LIST(),
}
}
};
static void ide_dev_register(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(ide_dev_info); i++) {
ide_qdev_register(&ide_dev_info[i]);
}
}
device_init(ide_dev_register);
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