mirror of https://gitee.com/openkylin/qemu.git
395 lines
11 KiB
C
395 lines
11 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 "qemu/osdep.h"
|
|
#include "hw/hw.h"
|
|
#include "sysemu/dma.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/error-report.h"
|
|
#include "hw/ide/internal.h"
|
|
#include "sysemu/block-backend.h"
|
|
#include "sysemu/blockdev.h"
|
|
#include "hw/block/block.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "qapi/visitor.h"
|
|
|
|
/* --------------------------------- */
|
|
|
|
static char *idebus_get_fw_dev_path(DeviceState *dev);
|
|
static void idebus_unrealize(BusState *qdev, Error **errp);
|
|
|
|
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;
|
|
k->unrealize = idebus_unrealize;
|
|
}
|
|
|
|
static void idebus_unrealize(BusState *bus, Error **errp)
|
|
{
|
|
IDEBus *ibus = IDE_BUS(bus);
|
|
|
|
if (ibus->vmstate) {
|
|
qemu_del_vm_change_state_handler(ibus->vmstate);
|
|
}
|
|
}
|
|
|
|
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 void ide_qdev_realize(DeviceState *qdev, Error **errp)
|
|
{
|
|
IDEDevice *dev = IDE_DEVICE(qdev);
|
|
IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
|
|
IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
|
|
|
|
if (dev->unit == -1) {
|
|
dev->unit = bus->master ? 1 : 0;
|
|
}
|
|
|
|
if (dev->unit >= bus->max_units) {
|
|
error_setg(errp, "Can't create IDE unit %d, bus supports only %d units",
|
|
dev->unit, bus->max_units);
|
|
return;
|
|
}
|
|
|
|
switch (dev->unit) {
|
|
case 0:
|
|
if (bus->master) {
|
|
error_setg(errp, "IDE unit %d is in use", dev->unit);
|
|
return;
|
|
}
|
|
bus->master = dev;
|
|
break;
|
|
case 1:
|
|
if (bus->slave) {
|
|
error_setg(errp, "IDE unit %d is in use", dev->unit);
|
|
return;
|
|
}
|
|
bus->slave = dev;
|
|
break;
|
|
default:
|
|
error_setg(errp, "Invalid IDE unit %d", dev->unit);
|
|
return;
|
|
}
|
|
dc->realize(dev, errp);
|
|
}
|
|
|
|
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(dev, "drive", blk_by_legacy_dinfo(drive),
|
|
&error_fatal);
|
|
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->blk) {
|
|
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 void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp)
|
|
{
|
|
IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
|
|
IDEState *s = bus->ifs + dev->unit;
|
|
int ret;
|
|
|
|
if (!dev->conf.blk) {
|
|
if (kind != IDE_CD) {
|
|
error_setg(errp, "No drive specified");
|
|
return;
|
|
} else {
|
|
/* Anonymous BlockBackend for an empty drive */
|
|
dev->conf.blk = blk_new(0, BLK_PERM_ALL);
|
|
ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
|
|
assert(ret == 0);
|
|
}
|
|
}
|
|
|
|
if (dev->conf.discard_granularity == -1) {
|
|
dev->conf.discard_granularity = 512;
|
|
} else if (dev->conf.discard_granularity &&
|
|
dev->conf.discard_granularity != 512) {
|
|
error_setg(errp, "discard_granularity must be 512 for ide");
|
|
return;
|
|
}
|
|
|
|
blkconf_blocksizes(&dev->conf);
|
|
if (dev->conf.logical_block_size != 512) {
|
|
error_setg(errp, "logical_block_size must be 512 for IDE");
|
|
return;
|
|
}
|
|
|
|
blkconf_serial(&dev->conf, &dev->serial);
|
|
if (kind != IDE_CD) {
|
|
if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255,
|
|
errp)) {
|
|
return;
|
|
}
|
|
}
|
|
if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD,
|
|
kind != IDE_CD, errp)) {
|
|
return;
|
|
}
|
|
|
|
if (ide_init_drive(s, dev->conf.blk, kind,
|
|
dev->version, dev->serial, dev->model, dev->wwn,
|
|
dev->conf.cyls, dev->conf.heads, dev->conf.secs,
|
|
dev->chs_trans, errp) < 0) {
|
|
return;
|
|
}
|
|
|
|
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");
|
|
}
|
|
|
|
static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
IDEDevice *d = IDE_DEVICE(obj);
|
|
|
|
visit_type_int32(v, name, &d->conf.bootindex, errp);
|
|
}
|
|
|
|
static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
IDEDevice *d = IDE_DEVICE(obj);
|
|
int32_t boot_index;
|
|
Error *local_err = NULL;
|
|
|
|
visit_type_int32(v, name, &boot_index, &local_err);
|
|
if (local_err) {
|
|
goto out;
|
|
}
|
|
/* check whether bootindex is present in fw_boot_order list */
|
|
check_boot_index(boot_index, &local_err);
|
|
if (local_err) {
|
|
goto out;
|
|
}
|
|
/* change bootindex to a new one */
|
|
d->conf.bootindex = boot_index;
|
|
|
|
if (d->unit != -1) {
|
|
add_boot_device_path(d->conf.bootindex, &d->qdev,
|
|
d->unit ? "/disk@1" : "/disk@0");
|
|
}
|
|
out:
|
|
error_propagate(errp, local_err);
|
|
}
|
|
|
|
static void ide_dev_instance_init(Object *obj)
|
|
{
|
|
object_property_add(obj, "bootindex", "int32",
|
|
ide_dev_get_bootindex,
|
|
ide_dev_set_bootindex, NULL, NULL, NULL);
|
|
object_property_set_int(obj, -1, "bootindex", NULL);
|
|
}
|
|
|
|
static void ide_hd_realize(IDEDevice *dev, Error **errp)
|
|
{
|
|
ide_dev_initfn(dev, IDE_HD, errp);
|
|
}
|
|
|
|
static void ide_cd_realize(IDEDevice *dev, Error **errp)
|
|
{
|
|
ide_dev_initfn(dev, IDE_CD, errp);
|
|
}
|
|
|
|
static void ide_drive_realize(IDEDevice *dev, Error **errp)
|
|
{
|
|
DriveInfo *dinfo = NULL;
|
|
|
|
if (dev->conf.blk) {
|
|
dinfo = blk_legacy_dinfo(dev->conf.blk);
|
|
}
|
|
|
|
ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD, errp);
|
|
}
|
|
|
|
#define DEFINE_IDE_DEV_PROPERTIES() \
|
|
DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
|
|
DEFINE_BLOCK_ERROR_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_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0),
|
|
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->realize = ide_hd_realize;
|
|
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->realize = ide_cd_realize;
|
|
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->realize = ide_drive_realize;
|
|
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->realize = ide_qdev_realize;
|
|
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,
|
|
.instance_init = ide_dev_instance_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)
|