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