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_realize(vdev, BUS(&ccw_dev->bus), errp);
  37 }
  38
  39 static void virtio_ccw_scsi_instance_init(Object *obj)
  40 {
  41     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
  42
  43     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  44                                 TYPE_VIRTIO_SCSI);
  45 }
  46
  47 static Property virtio_ccw_scsi_properties[] = {
  48     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  49                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  50     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  51                        VIRTIO_CCW_MAX_REV),
  52     DEFINE_PROP_END_OF_LIST(),
  53 };
  54
  55 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
  56 {
  57     DeviceClass *dc = DEVICE_CLASS(klass);
  58     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  59
  60     k->realize = virtio_ccw_scsi_realize;
  61     device_class_set_props(dc, virtio_ccw_scsi_properties);
  62     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
  63 }
  64
  65 static const TypeInfo virtio_ccw_scsi = {
  66     .name          = TYPE_VIRTIO_SCSI_CCW,
  67     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  68     .instance_size = sizeof(VirtIOSCSICcw),
  69     .instance_init = virtio_ccw_scsi_instance_init,
  70     .class_init    = virtio_ccw_scsi_class_init,
  71 };
  72
  73 #ifdef CONFIG_VHOST_SCSI
  74
  75 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  76 {
  77     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
  78     DeviceState *vdev = DEVICE(&dev->vdev);
  79
  80     qdev_realize(vdev, BUS(&ccw_dev->bus), 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     device_class_set_props(dc, 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)