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/virtio/virtio.h"
  14 #include "qapi/error.h"
  15 #include "virtio-ccw.h"
  16
  17 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  18 {
  19     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
  20     DeviceState *vdev = DEVICE(&dev->vdev);
  21     DeviceState *qdev = DEVICE(ccw_dev);
  22     char *bus_name;
  23
  24     /*
  25      * For command line compatibility, this sets the virtio-scsi-device bus
  26      * name as before.
  27      */
  28     if (qdev->id) {
  29         bus_name = g_strdup_printf("%s.0", qdev->id);
  30         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
  31         g_free(bus_name);
  32     }
  33
  34     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
  35     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  36 }
  37
  38 static void virtio_ccw_scsi_instance_init(Object *obj)
  39 {
  40     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
  41
  42     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  43                                 TYPE_VIRTIO_SCSI);
  44 }
  45
  46 static Property virtio_ccw_scsi_properties[] = {
  47     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  48                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  49     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  50                        VIRTIO_CCW_MAX_REV),
  51     DEFINE_PROP_END_OF_LIST(),
  52 };
  53
  54 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
  55 {
  56     DeviceClass *dc = DEVICE_CLASS(klass);
  57     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  58
  59     k->realize = virtio_ccw_scsi_realize;
  60     dc->props = virtio_ccw_scsi_properties;
  61     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
  62 }
  63
  64 static const TypeInfo virtio_ccw_scsi = {
  65     .name          = TYPE_VIRTIO_SCSI_CCW,
  66     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  67     .instance_size = sizeof(VirtIOSCSICcw),
  68     .instance_init = virtio_ccw_scsi_instance_init,
  69     .class_init    = virtio_ccw_scsi_class_init,
  70 };
  71
  72 #ifdef CONFIG_VHOST_SCSI
  73
  74 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  75 {
  76     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
  77     DeviceState *vdev = DEVICE(&dev->vdev);
  78
  79     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
  80     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  81 }
  82
  83 static void vhost_ccw_scsi_instance_init(Object *obj)
  84 {
  85     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
  86
  87     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  88                                 TYPE_VHOST_SCSI);
  89 }
  90
  91 static Property vhost_ccw_scsi_properties[] = {
  92     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  93                        VIRTIO_CCW_MAX_REV),
  94     DEFINE_PROP_END_OF_LIST(),
  95 };
  96
  97 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
  98 {
  99     DeviceClass *dc = DEVICE_CLASS(klass);
 100     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 101
 102     k->realize = vhost_ccw_scsi_realize;
 103     dc->props = vhost_ccw_scsi_properties;
 104     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 105 }
 106
 107 static const TypeInfo vhost_ccw_scsi = {
 108     .name          = TYPE_VHOST_SCSI_CCW,
 109     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 110     .instance_size = sizeof(VHostSCSICcw),
 111     .instance_init = vhost_ccw_scsi_instance_init,
 112     .class_init    = vhost_ccw_scsi_class_init,
 113 };
 114
 115 #endif
 116
 117 static void virtio_ccw_scsi_register(void)
 118 {
 119     type_register_static(&virtio_ccw_scsi);
 120 #ifdef CONFIG_VHOST_SCSI
 121     type_register_static(&vhost_ccw_scsi);
 122 #endif
 123 }
 124
 125 type_init(virtio_ccw_scsi_register)