qemu

FORK: QEMU emulator
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ccw-device.c (2301B)

      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 
     17 static 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 
     34 static void ccw_device_realize(CcwDevice *dev, Error **errp)
     35 {
     36     ccw_device_refill_ids(dev);
     37 }
     38 
     39 static 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 
     46 static void ccw_device_reset(DeviceState *d)
     47 {
     48     CcwDevice *ccw_dev = CCW_DEVICE(d);
     49 
     50     css_reset_sch(ccw_dev->sch);
     51 }
     52 
     53 static 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 
     65 const 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 
     75 static 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 
     84 static void ccw_device_register(void)
     85 {
     86     type_register_static(&ccw_device_info);
     87 }
     88 
     89 type_init(ccw_device_register)