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
  14 static 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
  31 static void ccw_device_realize(CcwDevice *dev, Error **errp)
  32 {
  33     ccw_device_refill_ids(dev);
  34 }
  35
  36 static 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
  43 static void ccw_device_reset(DeviceState *d)
  44 {
  45     CcwDevice *ccw_dev = CCW_DEVICE(d);
  46
  47     css_reset_sch(ccw_dev->sch);
  48 }
  49
  50 static 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
  61 const 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
  71 static 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
  80 static void ccw_device_register(void)
  81 {
  82     type_register_static(&ccw_device_info);
  83 }
  84
  85 type_init(ccw_device_register)