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 bool ccw_device_realize(CcwDevice *dev, Error **errp) 35 { 36 ccw_device_refill_ids(dev); 37 return true; 38 } 39 40 static Property ccw_device_properties[] = { 41 DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno), 42 DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id), 43 DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id), 44 DEFINE_PROP_END_OF_LIST(), 45 }; 46 47 static void ccw_device_reset(DeviceState *d) 48 { 49 CcwDevice *ccw_dev = CCW_DEVICE(d); 50 51 css_reset_sch(ccw_dev->sch); 52 } 53 54 static void ccw_device_class_init(ObjectClass *klass, void *data) 55 { 56 DeviceClass *dc = DEVICE_CLASS(klass); 57 CCWDeviceClass *k = CCW_DEVICE_CLASS(klass); 58 59 k->realize = ccw_device_realize; 60 k->refill_ids = ccw_device_refill_ids; 61 device_class_set_props(dc, ccw_device_properties); 62 dc->reset = ccw_device_reset; 63 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 64 } 65 66 const VMStateDescription vmstate_ccw_dev = { 67 .name = "s390_ccw_dev", 68 .version_id = 1, 69 .minimum_version_id = 1, 70 .fields = (const VMStateField[]) { 71 VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev), 72 VMSTATE_END_OF_LIST() 73 } 74 }; 75 76 static const TypeInfo ccw_device_info = { 77 .name = TYPE_CCW_DEVICE, 78 .parent = TYPE_DEVICE, 79 .instance_size = sizeof(CcwDevice), 80 .class_size = sizeof(CCWDeviceClass), 81 .class_init = ccw_device_class_init, 82 .abstract = true, 83 }; 84 85 static void ccw_device_register(void) 86 { 87 type_register_static(&ccw_device_info); 88 } 89 90 type_init(ccw_device_register) 91