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qemu/hw/ide/qdev.c

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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 "sysemu/dma.h"
#include "qemu/error-report.h"
#include <hw/ide/internal.h>
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "sysemu/sysemu.h"
/* --------------------------------- */
static char *idebus_get_fw_dev_path(DeviceState *dev);
static Property ide_props[] = {
DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
DEFINE_PROP_END_OF_LIST(),
};
static void ide_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *k = BUS_CLASS(klass);
k->get_fw_dev_path = idebus_get_fw_dev_path;
}
static const TypeInfo ide_bus_info = {
.name = TYPE_IDE_BUS,
.parent = TYPE_BUS,
.instance_size = sizeof(IDEBus),
.class_init = ide_bus_class_init,
};
void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
int bus_id, int max_units)
{
qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
idebus->bus_id = bus_id;
idebus->max_units = max_units;
}
static char *idebus_get_fw_dev_path(DeviceState *dev)
{
char path[30];
snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
((IDEBus*)dev->parent_bus)->bus_id);
return g_strdup(path);
}
static int ide_qdev_init(DeviceState *qdev)
{
IDEDevice *dev = IDE_DEVICE(qdev);
IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
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;
}
if (dev->unit >= bus->max_units) {
error_report("Can't create IDE unit %d, bus supports only %d units",
dev->unit, bus->max_units);
goto err;
}
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 dc->init(dev);
err:
return -1;
}
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);
}
int ide_get_geometry(BusState *bus, int unit,
int16_t *cyls, int8_t *heads, int8_t *secs)
{
IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
if (s->drive_kind != IDE_HD || !s->bs) {
return -1;
}
*cyls = s->cylinders;
*heads = s->heads;
*secs = s->sectors;
return 0;
}
int ide_get_bios_chs_trans(BusState *bus, int unit)
{
return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
}
/* --------------------------------- */
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;
Error *err = NULL;
if (dev->conf.discard_granularity == -1) {
dev->conf.discard_granularity = 512;
} else if (dev->conf.discard_granularity &&
dev->conf.discard_granularity != 512) {
error_report("discard_granularity must be 512 for ide");
return -1;
}
blkconf_serial(&dev->conf, &dev->serial);
if (kind != IDE_CD) {
blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255, &err);
if (err) {
error_report("%s", error_get_pretty(err));
error_free(err);
return -1;
}
}
if (ide_init_drive(s, dev->conf.bs, kind,
dev->version, dev->serial, dev->model, dev->wwn,
dev->conf.cyls, dev->conf.heads, dev->conf.secs,
dev->chs_trans) < 0) {
return -1;
}
if (!dev->version) {
dev->version = g_strdup(s->version);
}
if (!dev->serial) {
dev->serial = g_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_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
DEFINE_PROP_UINT64("wwn", IDEDrive, dev.wwn, 0), \
DEFINE_PROP_STRING("serial", IDEDrive, dev.serial),\
DEFINE_PROP_STRING("model", IDEDrive, dev.model)
static Property ide_hd_properties[] = {
DEFINE_IDE_DEV_PROPERTIES(),
DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
DEFINE_PROP_END_OF_LIST(),
};
static void ide_hd_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
k->init = ide_hd_initfn;
dc->fw_name = "drive";
dc->desc = "virtual IDE disk";
dc->props = ide_hd_properties;
}
static const TypeInfo ide_hd_info = {
.name = "ide-hd",
.parent = TYPE_IDE_DEVICE,
.instance_size = sizeof(IDEDrive),
.class_init = ide_hd_class_init,
};
static Property ide_cd_properties[] = {
DEFINE_IDE_DEV_PROPERTIES(),
DEFINE_PROP_END_OF_LIST(),
};
static void ide_cd_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
k->init = ide_cd_initfn;
dc->fw_name = "drive";
dc->desc = "virtual IDE CD-ROM";
dc->props = ide_cd_properties;
}
static const TypeInfo ide_cd_info = {
.name = "ide-cd",
.parent = TYPE_IDE_DEVICE,
.instance_size = sizeof(IDEDrive),
.class_init = ide_cd_class_init,
};
static Property ide_drive_properties[] = {
DEFINE_IDE_DEV_PROPERTIES(),
DEFINE_PROP_END_OF_LIST(),
};
static void ide_drive_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
k->init = ide_drive_initfn;
dc->fw_name = "drive";
dc->desc = "virtual IDE disk or CD-ROM (legacy)";
dc->props = ide_drive_properties;
}
static const TypeInfo ide_drive_info = {
.name = "ide-drive",
.parent = TYPE_IDE_DEVICE,
.instance_size = sizeof(IDEDrive),
.class_init = ide_drive_class_init,
};
static void ide_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
k->init = ide_qdev_init;
set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
k->bus_type = TYPE_IDE_BUS;
k->props = ide_props;
}
static const TypeInfo ide_device_type_info = {
.name = TYPE_IDE_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(IDEDevice),
.abstract = true,
.class_size = sizeof(IDEDeviceClass),
.class_init = ide_device_class_init,
};
static void ide_register_types(void)
{
type_register_static(&ide_bus_info);
type_register_static(&ide_hd_info);
type_register_static(&ide_cd_info);
type_register_static(&ide_drive_info);
type_register_static(&ide_device_type_info);
}
type_init(ide_register_types)
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