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virtio-ccw-scsi.c (2546B)

      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)