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
  12#include "qemu/osdep.h"
  13#include "ccw-device.h"
  14#include "qemu/module.h"
  15
  16static void ccw_device_refill_ids(CcwDevice *dev)
  17{
  18    SubchDev *sch = dev->sch;
  19
  20    assert(sch);
  21
  22    dev->dev_id.cssid = sch->cssid;
  23    dev->dev_id.ssid = sch->ssid;
  24    dev->dev_id.devid = sch->devno;
  25    dev->dev_id.valid = true;
  26
  27    dev->subch_id.cssid = sch->cssid;
  28    dev->subch_id.ssid = sch->ssid;
  29    dev->subch_id.devid = sch->schid;
  30    dev->subch_id.valid = true;
  31}
  32
  33static void ccw_device_realize(CcwDevice *dev, Error **errp)
  34{
  35    ccw_device_refill_ids(dev);
  36}
  37
  38static Property ccw_device_properties[] = {
  39    DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno),
  40    DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id),
  41    DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id),
  42    DEFINE_PROP_END_OF_LIST(),
  43};
  44
  45static void ccw_device_reset(DeviceState *d)
  46{
  47    CcwDevice *ccw_dev = CCW_DEVICE(d);
  48
  49    css_reset_sch(ccw_dev->sch);
  50}
  51
  52static void ccw_device_class_init(ObjectClass *klass, void *data)
  53{
  54    DeviceClass *dc = DEVICE_CLASS(klass);
  55    CCWDeviceClass *k = CCW_DEVICE_CLASS(klass);
  56
  57    k->realize = ccw_device_realize;
  58    k->refill_ids = ccw_device_refill_ids;
  59    dc->props = ccw_device_properties;
  60    dc->reset = ccw_device_reset;
  61}
  62
  63const VMStateDescription vmstate_ccw_dev = {
  64    .name = "s390_ccw_dev",
  65    .version_id = 1,
  66    .minimum_version_id = 1,
  67    .fields = (VMStateField[]) {
  68        VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev),
  69        VMSTATE_END_OF_LIST()
  70    }
  71};
  72
  73static const TypeInfo ccw_device_info = {
  74    .name = TYPE_CCW_DEVICE,
  75    .parent = TYPE_DEVICE,
  76    .instance_size = sizeof(CcwDevice),
  77    .class_size = sizeof(CCWDeviceClass),
  78    .class_init = ccw_device_class_init,
  79    .abstract = true,
  80};
  81
  82static void ccw_device_register(void)
  83{
  84    type_register_static(&ccw_device_info);
  85}
  86
  87type_init(ccw_device_register)
  88