LXR qemu/hw/s390x/ccw-device.c

   1/*
   2 * Common device infrastructure for devices in the virtual css
   3 *
   4 * Copyright 2016 IBM Corp.
   5 * Author(s): Jing Liu <liujbjl@linux.vnet.ibm.com>
   6 *
   7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
   8 * your option) any later version. See the COPYING file in the top-level
   9 * directory.
  10 */
  11#include "qemu/osdep.h"
  12#include "ccw-device.h"
  13
  14static void ccw_device_refill_ids(CcwDevice *dev)
  15{
  16    SubchDev *sch = dev->sch;
  17
  18    assert(sch);
  19
  20    dev->dev_id.cssid = sch->cssid;
  21    dev->dev_id.ssid = sch->ssid;
  22    dev->dev_id.devid = sch->devno;
  23    dev->dev_id.valid = true;
  24
  25    dev->subch_id.cssid = sch->cssid;
  26    dev->subch_id.ssid = sch->ssid;
  27    dev->subch_id.devid = sch->schid;
  28    dev->subch_id.valid = true;
  29}
  30
  31static void ccw_device_realize(CcwDevice *dev, Error **errp)
  32{
  33    ccw_device_refill_ids(dev);
  34}
  35
  36static Property ccw_device_properties[] = {
  37    DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno),
  38    DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id),
  39    DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id),
  40    DEFINE_PROP_END_OF_LIST(),
  41};
  42
  43static void ccw_device_reset(DeviceState *d)
  44{
  45    CcwDevice *ccw_dev = CCW_DEVICE(d);
  46
  47    css_reset_sch(ccw_dev->sch);
  48}
  49
  50static void ccw_device_class_init(ObjectClass *klass, void *data)
  51{
  52    DeviceClass *dc = DEVICE_CLASS(klass);
  53    CCWDeviceClass *k = CCW_DEVICE_CLASS(klass);
  54
  55    k->realize = ccw_device_realize;
  56    k->refill_ids = ccw_device_refill_ids;
  57    dc->props = ccw_device_properties;
  58    dc->reset = ccw_device_reset;
  59}
  60
  61const VMStateDescription vmstate_ccw_dev = {
  62    .name = "s390_ccw_dev",
  63    .version_id = 1,
  64    .minimum_version_id = 1,
  65    .fields = (VMStateField[]) {
  66        VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev),
  67        VMSTATE_END_OF_LIST()
  68    }
  69};
  70
  71static const TypeInfo ccw_device_info = {
  72    .name = TYPE_CCW_DEVICE,
  73    .parent = TYPE_DEVICE,
  74    .instance_size = sizeof(CcwDevice),
  75    .class_size = sizeof(CCWDeviceClass),
  76    .class_init = ccw_device_class_init,
  77    .abstract = true,
  78};
  79
  80static void ccw_device_register(void)
  81{
  82    type_register_static(&ccw_device_info);
  83}
  84
  85type_init(ccw_device_register)
  86