100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
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/*
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* Emulated ccw-attached 3270 implementation
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*
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* Copyright 2017 IBM Corp.
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* Author(s): Yang Chen <bjcyang@linux.vnet.ibm.com>
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* Jing Liu <liujbjl@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/module.h"
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#include "cpu.h"
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#include "hw/s390x/css.h"
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#include "hw/s390x/css-bridge.h"
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#include "hw/s390x/3270-ccw.h"
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static void emulated_ccw_3270_realize(DeviceState *ds, Error **errp)
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{
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uint16_t chpid;
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EmulatedCcw3270Device *dev = EMULATED_CCW_3270(ds);
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EmulatedCcw3270Class *ck = EMULATED_CCW_3270_GET_CLASS(dev);
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CcwDevice *cdev = CCW_DEVICE(ds);
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CCWDeviceClass *cdk = CCW_DEVICE_GET_CLASS(cdev);
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SubchDev *sch = css_create_virtual_sch(cdev->devno, errp);
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Error *err = NULL;
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if (!sch) {
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return;
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}
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if (!ck->init) {
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goto out_err;
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}
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sch->driver_data = dev;
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cdev->sch = sch;
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chpid = css_find_free_chpid(sch->cssid);
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if (chpid > MAX_CHPID) {
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error_setg(&err, "No available chpid to use.");
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goto out_err;
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}
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sch->id.reserved = 0xff;
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sch->id.cu_type = EMULATED_CCW_3270_CU_TYPE;
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css_sch_build_virtual_schib(sch, (uint8_t)chpid,
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EMULATED_CCW_3270_CHPID_TYPE);
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ck->init(dev, &err);
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if (err) {
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goto out_err;
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}
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cdk->realize(cdev, &err);
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if (err) {
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goto out_err;
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}
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return;
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out_err:
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error_propagate(errp, err);
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css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
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cdev->sch = NULL;
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g_free(sch);
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}
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static Property emulated_ccw_3270_properties[] = {
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DEFINE_PROP_END_OF_LIST(),
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};
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static void emulated_ccw_3270_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->props = emulated_ccw_3270_properties;
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dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
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dc->realize = emulated_ccw_3270_realize;
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dc->hotpluggable = false;
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}
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static const TypeInfo emulated_ccw_3270_info = {
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.name = TYPE_EMULATED_CCW_3270,
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.parent = TYPE_CCW_DEVICE,
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.instance_size = sizeof(EmulatedCcw3270Device),
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.class_init = emulated_ccw_3270_class_init,
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.class_size = sizeof(EmulatedCcw3270Class),
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.abstract = true,
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};
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static void emulated_ccw_register(void)
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{
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type_register_static(&emulated_ccw_3270_info);
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}
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type_init(emulated_ccw_register)
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