hw/s390x/virtio-ccw-scsi.c

   1 /*
   2  * virtio ccw scsi 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/qdev-properties.h"
  14 #include "hw/virtio/virtio.h"
  15 #include "qapi/error.h"
  16 #include "qemu/module.h"
  17 #include "virtio-ccw.h"
  18 #include "hw/virtio/virtio-scsi.h"
  19
  20 #define TYPE_VIRTIO_SCSI_CCW "virtio-scsi-ccw"
  21 OBJECT_DECLARE_SIMPLE_TYPE(VirtIOSCSICcw, VIRTIO_SCSI_CCW)
  22
  23 struct VirtIOSCSICcw {
  24     VirtioCcwDevice parent_obj;
  25     VirtIOSCSI vdev;
  26 };
  27
  28 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  29 {
  30     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
  31     DeviceState *vdev = DEVICE(&dev->vdev);
  32     DeviceState *qdev = DEVICE(ccw_dev);
  33     char *bus_name;
  34
  35     /*
  36      * For command line compatibility, this sets the virtio-scsi-device bus
  37      * name as before.
  38      */
  39     if (qdev->id) {
  40         bus_name = g_strdup_printf("%s.0", qdev->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 static void virtio_ccw_scsi_instance_init(Object *obj)
  49 {
  50     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
  51
  52     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  53                                 TYPE_VIRTIO_SCSI);
  54 }
  55
  56 static Property virtio_ccw_scsi_properties[] = {
  57     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  58                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  59     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  60                        VIRTIO_CCW_MAX_REV),
  61     DEFINE_PROP_END_OF_LIST(),
  62 };
  63
  64 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
  65 {
  66     DeviceClass *dc = DEVICE_CLASS(klass);
  67     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  68
  69     k->realize = virtio_ccw_scsi_realize;
  70     device_class_set_props(dc, virtio_ccw_scsi_properties);
  71     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
  72 }
  73
  74 static const TypeInfo virtio_ccw_scsi = {
  75     .name          = TYPE_VIRTIO_SCSI_CCW,
  76     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  77     .instance_size = sizeof(VirtIOSCSICcw),
  78     .instance_init = virtio_ccw_scsi_instance_init,
  79     .class_init    = virtio_ccw_scsi_class_init,
  80 };
  81
  82 static void virtio_ccw_scsi_register(void)
  83 {
  84     type_register_static(&virtio_ccw_scsi);
  85 }
  86
  87 type_init(virtio_ccw_scsi_register)