hw/s390x/virtio-ccw-serial.c

   1 /*
   2  * virtio ccw serial implementation
   3  *
   4  * Copyright 2012, 2015 IBM Corp.
   5  * Author(s): Cornelia Huck <cornelia.huck@de.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 "hw/virtio/virtio.h"
  14 #include "qemu/module.h"
  15 #include "hw/qdev-properties.h"
  16 #include "hw/virtio/virtio-serial.h"
  17 #include "virtio-ccw.h"
  18 #include "hw/virtio/virtio-serial.h"
  19
  20 #define TYPE_VIRTIO_SERIAL_CCW "virtio-serial-ccw"
  21 OBJECT_DECLARE_SIMPLE_TYPE(VirtioSerialCcw, VIRTIO_SERIAL_CCW)
  22
  23 struct VirtioSerialCcw {
  24     VirtioCcwDevice parent_obj;
  25     VirtIOSerial vdev;
  26 };
  27
  28 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  29 {
  30     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
  31     DeviceState *vdev = DEVICE(&dev->vdev);
  32     DeviceState *proxy = DEVICE(ccw_dev);
  33     char *bus_name;
  34
  35     /*
  36      * For command line compatibility, this sets the virtio-serial-device bus
  37      * name as before.
  38      */
  39     if (proxy->id) {
  40         bus_name = g_strdup_printf("%s.0", proxy->id);
  41         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
  42         g_free(bus_name);
  43     }
  44
  45     qdev_realize(vdev, BUS(&ccw_dev->bus), errp);
  46 }
  47
  48
  49 static void virtio_ccw_serial_instance_init(Object *obj)
  50 {
  51     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
  52
  53     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  54                                 TYPE_VIRTIO_SERIAL);
  55 }
  56
  57 static Property virtio_ccw_serial_properties[] = {
  58     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  59                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  60     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  61                        VIRTIO_CCW_MAX_REV),
  62     DEFINE_PROP_END_OF_LIST(),
  63 };
  64
  65 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
  66 {
  67     DeviceClass *dc = DEVICE_CLASS(klass);
  68     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  69
  70     k->realize = virtio_ccw_serial_realize;
  71     device_class_set_props(dc, virtio_ccw_serial_properties);
  72     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
  73 }
  74
  75 static const TypeInfo virtio_ccw_serial = {
  76     .name          = TYPE_VIRTIO_SERIAL_CCW,
  77     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  78     .instance_size = sizeof(VirtioSerialCcw),
  79     .instance_init = virtio_ccw_serial_instance_init,
  80     .class_init    = virtio_ccw_serial_class_init,
  81 };
  82
  83 static void virtio_ccw_serial_register(void)
  84 {
  85     type_register_static(&virtio_ccw_serial);
  86 }
  87
  88 type_init(virtio_ccw_serial_register)