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/*
* Common device infrastructure for devices in the virtual css
*
* Copyright 2016 IBM Corp.
* Author(s): Jing Liu <liujbjl@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include "qemu/osdep.h"
#include "ccw-device.h"
#include "hw/qdev-properties.h"
#include "qemu/module.h"
#include "ipl.h"
#include "qapi/visitor.h"
#include "qemu/ctype.h"
#include "qapi/error.h"
static void ccw_device_refill_ids(CcwDevice *dev)
{
SubchDev *sch = dev->sch;
assert(sch);
dev->dev_id.cssid = sch->cssid;
dev->dev_id.ssid = sch->ssid;
dev->dev_id.devid = sch->devno;
dev->dev_id.valid = true;
dev->subch_id.cssid = sch->cssid;
dev->subch_id.ssid = sch->ssid;
dev->subch_id.devid = sch->schid;
dev->subch_id.valid = true;
}
static bool ccw_device_realize(CcwDevice *dev, Error **errp)
{
ccw_device_refill_ids(dev);
return true;
}
static void ccw_device_get_loadparm(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
CcwDevice *dev = CCW_DEVICE(obj);
char *str = g_strndup((char *) dev->loadparm, sizeof(dev->loadparm));
visit_type_str(v, name, &str, errp);
g_free(str);
}
static void ccw_device_set_loadparm(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
CcwDevice *dev = CCW_DEVICE(obj);
char *val;
int index;
index = object_property_get_int(obj, "bootindex", NULL);
if (index < 0) {
error_setg(errp, "LOADPARM is only valid for boot devices!");
}
if (!visit_type_str(v, name, &val, errp)) {
return;
}
s390_ipl_fmt_loadparm(dev->loadparm, val, errp);
}
static const PropertyInfo ccw_loadparm = {
.name = "ccw_loadparm",
.description = "Up to 8 chars in set of [A-Za-z0-9. ] to pass"
" to the guest loader/kernel",
.get = ccw_device_get_loadparm,
.set = ccw_device_set_loadparm,
};
static Property ccw_device_properties[] = {
DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno),
DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id),
DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id),
DEFINE_PROP("loadparm", CcwDevice, loadparm, ccw_loadparm,
typeof(uint8_t[8])),
DEFINE_PROP_END_OF_LIST(),
};
static void ccw_device_reset_hold(Object *obj, ResetType type)
{
CcwDevice *ccw_dev = CCW_DEVICE(obj);
css_reset_sch(ccw_dev->sch);
}
static void ccw_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
CCWDeviceClass *k = CCW_DEVICE_CLASS(klass);
ResettableClass *rc = RESETTABLE_CLASS(klass);
k->realize = ccw_device_realize;
k->refill_ids = ccw_device_refill_ids;
device_class_set_props(dc, ccw_device_properties);
rc->phases.hold = ccw_device_reset_hold;
dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
}
const VMStateDescription vmstate_ccw_dev = {
.name = "s390_ccw_dev",
.version_id = 1,
.minimum_version_id = 1,
.fields = (const VMStateField[]) {
VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev),
VMSTATE_END_OF_LIST()
}
};
static const TypeInfo ccw_device_info = {
.name = TYPE_CCW_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(CcwDevice),
.class_size = sizeof(CCWDeviceClass),
.class_init = ccw_device_class_init,
.abstract = true,
};
static void ccw_device_register(void)
{
type_register_static(&ccw_device_info);
}
type_init(ccw_device_register)
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