517ff12c7d
Let's vmstatify virtio_ccw_save_config and virtio_ccw_load_config for flexibility (extending using subsections) and for fun. To achieve this we need to hack the config_vector, which is VirtIODevice (that is common virtio) state, in the middle of the VirtioCcwDevice state representation. This is somewhat ugly, but we have no choice because the stream format needs to be preserved. Almost no changes in behavior. Exception is everything that comes with vmstate like extra bookkeeping about what's in the stream, and maybe some extra checks and better error reporting. Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Message-Id: <20170703213414.94298-1-pasic@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
78 lines
2 KiB
C
78 lines
2 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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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 void ccw_device_realize(CcwDevice *dev, Error **errp)
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{
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ccw_device_refill_ids(dev);
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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_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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k->realize = ccw_device_realize;
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k->refill_ids = ccw_device_refill_ids;
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dc->props = ccw_device_properties;
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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 = (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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