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
  19 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  20 {
  21     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
  22     DeviceState *vdev = DEVICE(&dev->vdev);
  23     DeviceState *qdev = DEVICE(ccw_dev);
  24     char *bus_name;
  25
  26     /*
  27      * For command line compatibility, this sets the virtio-scsi-device bus
  28      * name as before.
  29      */
  30     if (qdev->id) {
  31         bus_name = g_strdup_printf("%s.0", qdev->id);
  32         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
  33         g_free(bus_name);
  34     }
  35
  36     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
  37     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  38 }
  39
  40 static void virtio_ccw_scsi_instance_init(Object *obj)
  41 {
  42     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
  43
  44     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  45                                 TYPE_VIRTIO_SCSI);
  46 }
  47
  48 static Property virtio_ccw_scsi_properties[] = {
  49     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  50                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  51     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  52                        VIRTIO_CCW_MAX_REV),
  53     DEFINE_PROP_END_OF_LIST(),
  54 };
  55
  56 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
  57 {
  58     DeviceClass *dc = DEVICE_CLASS(klass);
  59     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  60
  61     k->realize = virtio_ccw_scsi_realize;
  62     dc->props = virtio_ccw_scsi_properties;
  63     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
  64 }
  65
  66 static const TypeInfo virtio_ccw_scsi = {
  67     .name          = TYPE_VIRTIO_SCSI_CCW,
  68     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  69     .instance_size = sizeof(VirtIOSCSICcw),
  70     .instance_init = virtio_ccw_scsi_instance_init,
  71     .class_init    = virtio_ccw_scsi_class_init,
  72 };
  73
  74 #ifdef CONFIG_VHOST_SCSI
  75
  76 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  77 {
  78     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
  79     DeviceState *vdev = DEVICE(&dev->vdev);
  80
  81     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
  82     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  83 }
  84
  85 static void vhost_ccw_scsi_instance_init(Object *obj)
  86 {
  87     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
  88
  89     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  90                                 TYPE_VHOST_SCSI);
  91 }
  92
  93 static Property vhost_ccw_scsi_properties[] = {
  94     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  95                        VIRTIO_CCW_MAX_REV),
  96     DEFINE_PROP_END_OF_LIST(),
  97 };
  98
  99 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
 100 {
 101     DeviceClass *dc = DEVICE_CLASS(klass);
 102     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 103
 104     k->realize = vhost_ccw_scsi_realize;
 105     dc->props = vhost_ccw_scsi_properties;
 106     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 107 }
 108
 109 static const TypeInfo vhost_ccw_scsi = {
 110     .name          = TYPE_VHOST_SCSI_CCW,
 111     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 112     .instance_size = sizeof(VHostSCSICcw),
 113     .instance_init = vhost_ccw_scsi_instance_init,
 114     .class_init    = vhost_ccw_scsi_class_init,
 115 };
 116
 117 #endif
 118
 119 static void virtio_ccw_scsi_register(void)
 120 {
 121     type_register_static(&virtio_ccw_scsi);
 122 #ifdef CONFIG_VHOST_SCSI
 123     type_register_static(&vhost_ccw_scsi);
 124 #endif
 125 }
 126
 127 type_init(virtio_ccw_scsi_register)