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 "hw/qdev-properties.h"
  15#include "qemu/module.h"
  16
  17static void ccw_device_refill_ids(CcwDevice *dev)
  18{
  19    SubchDev *sch = dev->sch;
  20
  21    assert(sch);
  22
  23    dev->dev_id.cssid = sch->cssid;
  24    dev->dev_id.ssid = sch->ssid;
  25    dev->dev_id.devid = sch->devno;
  26    dev->dev_id.valid = true;
  27
  28    dev->subch_id.cssid = sch->cssid;
  29    dev->subch_id.ssid = sch->ssid;
  30    dev->subch_id.devid = sch->schid;
  31    dev->subch_id.valid = true;
  32}
  33
  34static void ccw_device_realize(CcwDevice *dev, Error **errp)
  35{
  36    ccw_device_refill_ids(dev);
  37}
  38
  39static Property ccw_device_properties[] = {
  40    DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno),
  41    DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id),
  42    DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id),
  43    DEFINE_PROP_END_OF_LIST(),
  44};
  45
  46static void ccw_device_reset(DeviceState *d)
  47{
  48    CcwDevice *ccw_dev = CCW_DEVICE(d);
  49
  50    css_reset_sch(ccw_dev->sch);
  51}
  52
  53static void ccw_device_class_init(ObjectClass *klass, void *data)
  54{
  55    DeviceClass *dc = DEVICE_CLASS(klass);
  56    CCWDeviceClass *k = CCW_DEVICE_CLASS(klass);
  57
  58    k->realize = ccw_device_realize;
  59    k->refill_ids = ccw_device_refill_ids;
  60    device_class_set_props(dc, ccw_device_properties);
  61    dc->reset = ccw_device_reset;
  62    dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
  63}
  64
  65const VMStateDescription vmstate_ccw_dev = {
  66    .name = "s390_ccw_dev",
  67    .version_id = 1,
  68    .minimum_version_id = 1,
  69    .fields = (VMStateField[]) {
  70        VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev),
  71        VMSTATE_END_OF_LIST()
  72    }
  73};
  74
  75static const TypeInfo ccw_device_info = {
  76    .name = TYPE_CCW_DEVICE,
  77    .parent = TYPE_DEVICE,
  78    .instance_size = sizeof(CcwDevice),
  79    .class_size = sizeof(CCWDeviceClass),
  80    .class_init = ccw_device_class_init,
  81    .abstract = true,
  82};
  83
  84static void ccw_device_register(void)
  85{
  86    type_register_static(&ccw_device_info);
  87}
  88
  89type_init(ccw_device_register)
  90