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/*
* Emulated ccw-attached 3270 implementation
*
* Copyright 2017 IBM Corp.
* Author(s): Yang Chen <bjcyang@linux.vnet.ibm.com>
* 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 "qapi/error.h"
#include "qemu/module.h"
#include "cpu.h"
#include "hw/s390x/css.h"
#include "hw/s390x/css-bridge.h"
#include "hw/s390x/3270-ccw.h"
static void emulated_ccw_3270_realize(DeviceState *ds, Error **errp)
{
uint16_t chpid;
EmulatedCcw3270Device *dev = EMULATED_CCW_3270(ds);
EmulatedCcw3270Class *ck = EMULATED_CCW_3270_GET_CLASS(dev);
CcwDevice *cdev = CCW_DEVICE(ds);
CCWDeviceClass *cdk = CCW_DEVICE_GET_CLASS(cdev);
SubchDev *sch = css_create_virtual_sch(cdev->devno, errp);
Error *err = NULL;
if (!sch) {
return;
}
if (!ck->init) {
goto out_err;
}
sch->driver_data = dev;
cdev->sch = sch;
chpid = css_find_free_chpid(sch->cssid);
if (chpid > MAX_CHPID) {
error_setg(&err, "No available chpid to use.");
goto out_err;
}
sch->id.reserved = 0xff;
sch->id.cu_type = EMULATED_CCW_3270_CU_TYPE;
css_sch_build_virtual_schib(sch, (uint8_t)chpid,
EMULATED_CCW_3270_CHPID_TYPE);
ck->init(dev, &err);
if (err) {
goto out_err;
}
cdk->realize(cdev, &err);
if (err) {
goto out_err;
}
return;
out_err:
error_propagate(errp, err);
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
cdev->sch = NULL;
g_free(sch);
}
static Property emulated_ccw_3270_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
static void emulated_ccw_3270_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->props = emulated_ccw_3270_properties;
dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
dc->realize = emulated_ccw_3270_realize;
dc->hotpluggable = false;
}
static const TypeInfo emulated_ccw_3270_info = {
.name = TYPE_EMULATED_CCW_3270,
.parent = TYPE_CCW_DEVICE,
.instance_size = sizeof(EmulatedCcw3270Device),
.class_init = emulated_ccw_3270_class_init,
.class_size = sizeof(EmulatedCcw3270Class),
.abstract = true,
};
static void emulated_ccw_register(void)
{
type_register_static(&emulated_ccw_3270_info);
}
type_init(emulated_ccw_register)
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