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qemu/hw/s390x/s390-virtio-bus.c
Jason Wang d820331a0b virtio-s390: introduce virtio_s390_device_plugged() 
This patch introduce a virtio-s390 specific device_plugged() function
and doing the number of virtqueue validation inside.

Cc: Alexander Graf <agraf@suse.de>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-05-31 16:47:50 +02:00

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/*
* QEMU S390 virtio target
*
* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw/hw.h"
#include "sysemu/block-backend.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "monitor/monitor.h"
#include "hw/loader.h"
#include "elf.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-rng.h"
#include "hw/virtio/virtio-serial.h"
#include "hw/virtio/virtio-net.h"
#include "hw/virtio/vhost-scsi.h"
#include "hw/sysbus.h"
#include "sysemu/kvm.h"
#include "hw/s390x/s390-virtio-bus.h"
#include "hw/virtio/virtio-bus.h"
/* #define DEBUG_S390 */
#ifdef DEBUG_S390
#define DPRINTF(fmt, ...) \
do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
do { } while (0)
#endif
#define VIRTIO_S390_QUEUE_MAX 64
static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
VirtIOS390Device *dev);
static const TypeInfo s390_virtio_bus_info = {
.name = TYPE_S390_VIRTIO_BUS,
.parent = TYPE_BUS,
.instance_size = sizeof(VirtIOS390Bus),
};
static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
/* length of VirtIO device pages */
const hwaddr virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
static void s390_virtio_bus_reset(void *opaque)
{
VirtIOS390Bus *bus = opaque;
bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
}
void s390_virtio_reset_idx(VirtIOS390Device *dev)
{
int i;
hwaddr idx_addr;
uint8_t num_vq;
num_vq = s390_virtio_device_num_vq(dev);
for (i = 0; i < num_vq; i++) {
idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
VIRTIO_VRING_AVAIL_IDX_OFFS;
address_space_stw(&address_space_memory, idx_addr, 0,
MEMTXATTRS_UNSPECIFIED, NULL);
idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
virtio_queue_get_avail_size(dev->vdev, i);
address_space_stw(&address_space_memory, idx_addr, 0,
MEMTXATTRS_UNSPECIFIED, NULL);
idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
VIRTIO_VRING_USED_IDX_OFFS;
address_space_stw(&address_space_memory, idx_addr, 0,
MEMTXATTRS_UNSPECIFIED, NULL);
idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
virtio_queue_get_used_size(dev->vdev, i);
address_space_stw(&address_space_memory, idx_addr, 0,
MEMTXATTRS_UNSPECIFIED, NULL);
}
}
VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
{
VirtIOS390Bus *bus;
BusState *_bus;
DeviceState *dev;
/* Create bridge device */
dev = qdev_create(NULL, "s390-virtio-bridge");
qdev_init_nofail(dev);
/* Create bus on bridge device */
_bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
bus->dev_page = *ram_size;
bus->dev_offs = bus->dev_page;
bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
/* Enable hotplugging */
qbus_set_hotplug_handler(_bus, dev, &error_abort);
/* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
*ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
qemu_register_reset(s390_virtio_bus_reset, bus);
return bus;
}
static void s390_virtio_device_init(VirtIOS390Device *dev,
VirtIODevice *vdev)
{
VirtIOS390Bus *bus;
int dev_len;
bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
dev->vdev = vdev;
dev->dev_offs = bus->dev_offs;
dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
dev_len = VIRTIO_DEV_OFFS_CONFIG;
dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
dev_len += dev->feat_len * 2;
dev_len += virtio_bus_get_vdev_config_len(&dev->bus);
bus->dev_offs += dev_len;
s390_virtio_device_sync(dev);
s390_virtio_reset_idx(dev);
if (dev->qdev.hotplugged) {
s390_virtio_irq(VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
}
}
static void s390_virtio_net_realize(VirtIOS390Device *s390_dev, Error **errp)
{
DeviceState *qdev = DEVICE(s390_dev);
VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
virtio_net_set_netclient_name(&dev->vdev, qdev->id,
object_get_typename(OBJECT(qdev)));
qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
}
static void s390_virtio_net_instance_init(Object *obj)
{
VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_NET);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex", &error_abort);
}
static void s390_virtio_blk_realize(VirtIOS390Device *s390_dev, Error **errp)
{
VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
}
static void s390_virtio_blk_instance_init(Object *obj)
{
VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_BLK);
object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
&error_abort);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex", &error_abort);
}
static void s390_virtio_serial_realize(VirtIOS390Device *s390_dev, Error **errp)
{
VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
DeviceState *qdev = DEVICE(s390_dev);
Error *err = NULL;
VirtIOS390Bus *bus;
char *bus_name;
bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
/*
* For command line compatibility, this sets the virtio-serial-device bus
* name as before.
*/
if (qdev->id) {
bus_name = g_strdup_printf("%s.0", qdev->id);
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
g_free(bus_name);
}
qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
bus->console = s390_dev;
}
static void s390_virtio_serial_instance_init(Object *obj)
{
VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SERIAL);
}
static void s390_virtio_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
{
VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
DeviceState *qdev = DEVICE(s390_dev);
Error *err = NULL;
char *bus_name;
/*
* For command line compatibility, this sets the virtio-scsi-device bus
* name as before.
*/
if (qdev->id) {
bus_name = g_strdup_printf("%s.0", qdev->id);
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
g_free(bus_name);
}
qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
}
static void s390_virtio_scsi_instance_init(Object *obj)
{
VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SCSI);
}
#ifdef CONFIG_VHOST_SCSI
static void s390_vhost_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
{
VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
}
static void s390_vhost_scsi_instance_init(Object *obj)
{
VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_SCSI);
}
#endif
static void s390_virtio_rng_realize(VirtIOS390Device *s390_dev, Error **errp)
{
VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_link(OBJECT(dev),
OBJECT(dev->vdev.conf.rng), "rng",
NULL);
s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
}
static void s390_virtio_rng_instance_init(Object *obj)
{
VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_RNG);
object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
"rng", &error_abort);
}
static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
{
ram_addr_t token_off;
token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
(vq * VIRTIO_VQCONFIG_LEN) +
VIRTIO_VQCONFIG_OFFS_TOKEN;
return address_space_ldq_be(&address_space_memory, token_off,
MEMTXATTRS_UNSPECIFIED, NULL);
}
static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
{
VirtIODevice *vdev = dev->vdev;
int num_vq;
for (num_vq = 0; num_vq < VIRTIO_S390_QUEUE_MAX; num_vq++) {
if (!virtio_queue_get_num(vdev, num_vq)) {
break;
}
}
return num_vq;
}
static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
{
ram_addr_t r = bus->next_ring;
bus->next_ring += VIRTIO_RING_LEN;
return r;
}
void s390_virtio_device_sync(VirtIOS390Device *dev)
{
VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
ram_addr_t cur_offs;
uint8_t num_vq;
int i;
virtio_reset(dev->vdev);
/* Sync dev space */
address_space_stb(&address_space_memory,
dev->dev_offs + VIRTIO_DEV_OFFS_TYPE,
dev->vdev->device_id,
MEMTXATTRS_UNSPECIFIED,
NULL);
address_space_stb(&address_space_memory,
dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
s390_virtio_device_num_vq(dev),
MEMTXATTRS_UNSPECIFIED,
NULL);
address_space_stb(&address_space_memory,
dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN,
dev->feat_len,
MEMTXATTRS_UNSPECIFIED,
NULL);
address_space_stb(&address_space_memory,
dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN,
dev->vdev->config_len,
MEMTXATTRS_UNSPECIFIED,
NULL);
num_vq = s390_virtio_device_num_vq(dev);
address_space_stb(&address_space_memory,
dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq,
MEMTXATTRS_UNSPECIFIED, NULL);
/* Sync virtqueues */
for (i = 0; i < num_vq; i++) {
ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
(i * VIRTIO_VQCONFIG_LEN);
ram_addr_t vring;
vring = s390_virtio_next_ring(bus);
virtio_queue_set_addr(dev->vdev, i, vring);
virtio_queue_set_vector(dev->vdev, i, i);
address_space_stq_be(&address_space_memory,
vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring,
MEMTXATTRS_UNSPECIFIED, NULL);
address_space_stw_be(&address_space_memory,
vq + VIRTIO_VQCONFIG_OFFS_NUM,
virtio_queue_get_num(dev->vdev, i),
MEMTXATTRS_UNSPECIFIED,
NULL);
}
cur_offs = dev->dev_offs;
cur_offs += VIRTIO_DEV_OFFS_CONFIG;
cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
/* Sync feature bitmap */
address_space_stl_le(&address_space_memory, cur_offs,
dev->vdev->host_features,
MEMTXATTRS_UNSPECIFIED, NULL);
dev->feat_offs = cur_offs + dev->feat_len;
cur_offs += dev->feat_len * 2;
/* Sync config space */
virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
cpu_physical_memory_write(cur_offs,
dev->vdev->config, dev->vdev->config_len);
cur_offs += dev->vdev->config_len;
}
void s390_virtio_device_update_status(VirtIOS390Device *dev)
{
VirtIODevice *vdev = dev->vdev;
uint32_t features;
virtio_set_status(vdev,
address_space_ldub(&address_space_memory,
dev->dev_offs + VIRTIO_DEV_OFFS_STATUS,
MEMTXATTRS_UNSPECIFIED, NULL));
/* Update guest supported feature bitmap */
features = bswap32(address_space_ldl_be(&address_space_memory,
dev->feat_offs,
MEMTXATTRS_UNSPECIFIED, NULL));
virtio_set_features(vdev, features);
}
/* Find a device by vring address */
VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
ram_addr_t mem,
int *vq_num)
{
BusChild *kid;
int i;
QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
for (i = 0; i < VIRTIO_S390_QUEUE_MAX; i++) {
if (!virtio_queue_get_addr(dev->vdev, i))
break;
if (virtio_queue_get_addr(dev->vdev, i) == mem) {
if (vq_num) {
*vq_num = i;
}
return dev;
}
}
}
return NULL;
}
/* Find a device by device descriptor location */
VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
{
BusChild *kid;
QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
if (dev->dev_offs == mem) {
return dev;
}
}
return NULL;
}
/* DeviceState to VirtIOS390Device. Note: used on datapath,
* be careful and test performance if you change this.
*/
static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
{
return container_of(d, VirtIOS390Device, qdev);
}
/* DeviceState to VirtIOS390Device. TODO: use QOM. */
static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
{
return container_of(d, VirtIOS390Device, qdev);
}
static void virtio_s390_notify(DeviceState *d, uint16_t vector)
{
VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
uint64_t token = s390_virtio_device_vq_token(dev, vector);
s390_virtio_irq(0, token);
}
static void virtio_s390_device_plugged(DeviceState *d, Error **errp)
{
VirtIOS390Device *dev = to_virtio_s390_device(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
int n = virtio_get_num_queues(vdev);
if (n > VIRTIO_S390_QUEUE_MAX) {
error_setg(errp, "The nubmer of virtqueues %d "
"exceeds s390 limit %d", n,
VIRTIO_S390_QUEUE_MAX);
}
}
/**************** S390 Virtio Bus Device Descriptions *******************/
static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
k->realize = s390_virtio_net_realize;
set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
}
static const TypeInfo s390_virtio_net = {
.name = TYPE_VIRTIO_NET_S390,
.parent = TYPE_VIRTIO_S390_DEVICE,
.instance_size = sizeof(VirtIONetS390),
.instance_init = s390_virtio_net_instance_init,
.class_init = s390_virtio_net_class_init,
};
static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
{
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->realize = s390_virtio_blk_realize;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo s390_virtio_blk = {
.name = "virtio-blk-s390",
.parent = TYPE_VIRTIO_S390_DEVICE,
.instance_size = sizeof(VirtIOBlkS390),
.instance_init = s390_virtio_blk_instance_init,
.class_init = s390_virtio_blk_class_init,
};
static Property s390_virtio_serial_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
k->realize = s390_virtio_serial_realize;
dc->props = s390_virtio_serial_properties;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo s390_virtio_serial = {
.name = TYPE_VIRTIO_SERIAL_S390,
.parent = TYPE_VIRTIO_S390_DEVICE,
.instance_size = sizeof(VirtIOSerialS390),
.instance_init = s390_virtio_serial_instance_init,
.class_init = s390_virtio_serial_class_init,
};
static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
k->realize = s390_virtio_rng_realize;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}
static const TypeInfo s390_virtio_rng = {
.name = TYPE_VIRTIO_RNG_S390,
.parent = TYPE_VIRTIO_S390_DEVICE,
.instance_size = sizeof(VirtIORNGS390),
.instance_init = s390_virtio_rng_instance_init,
.class_init = s390_virtio_rng_class_init,
};
static void s390_virtio_busdev_realize(DeviceState *dev, Error **errp)
{
VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
_info->realize(_dev, errp);
}
static void s390_virtio_busdev_reset(DeviceState *dev)
{
VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
virtio_reset(_dev->vdev);
}
static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = s390_virtio_busdev_realize;
dc->bus_type = TYPE_S390_VIRTIO_BUS;
dc->reset = s390_virtio_busdev_reset;
}
static const TypeInfo virtio_s390_device_info = {
.name = TYPE_VIRTIO_S390_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(VirtIOS390Device),
.class_init = virtio_s390_device_class_init,
.class_size = sizeof(VirtIOS390DeviceClass),
.abstract = true,
};
static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
k->realize = s390_virtio_scsi_realize;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo s390_virtio_scsi = {
.name = TYPE_VIRTIO_SCSI_S390,
.parent = TYPE_VIRTIO_S390_DEVICE,
.instance_size = sizeof(VirtIOSCSIS390),
.instance_init = s390_virtio_scsi_instance_init,
.class_init = s390_virtio_scsi_class_init,
};
#ifdef CONFIG_VHOST_SCSI
static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
k->realize = s390_vhost_scsi_realize;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo s390_vhost_scsi = {
.name = TYPE_VHOST_SCSI_S390,
.parent = TYPE_VIRTIO_S390_DEVICE,
.instance_size = sizeof(VHostSCSIS390),
.instance_init = s390_vhost_scsi_instance_init,
.class_init = s390_vhost_scsi_class_init,
};
#endif
/***************** S390 Virtio Bus Bridge Device *******************/
/* Only required to have the virtio bus as child in the system bus */
static int s390_virtio_bridge_init(SysBusDevice *dev)
{
/* nothing */
return 0;
}
static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
{
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->init = s390_virtio_bridge_init;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
}
static const TypeInfo s390_virtio_bridge_info = {
.name = "s390-virtio-bridge",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(SysBusDevice),
.class_init = s390_virtio_bridge_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
}
};
/* virtio-s390-bus */
static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
VirtIOS390Device *dev)
{
DeviceState *qdev = DEVICE(dev);
char virtio_bus_name[] = "virtio-bus";
qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
qdev, virtio_bus_name);
}
static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
{
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
BusClass *bus_class = BUS_CLASS(klass);
bus_class->max_dev = 1;
k->notify = virtio_s390_notify;
k->device_plugged = virtio_s390_device_plugged;
}
static const TypeInfo virtio_s390_bus_info = {
.name = TYPE_VIRTIO_S390_BUS,
.parent = TYPE_VIRTIO_BUS,
.instance_size = sizeof(VirtioS390BusState),
.class_init = virtio_s390_bus_class_init,
};
static void s390_virtio_register_types(void)
{
type_register_static(&virtio_s390_bus_info);
type_register_static(&s390_virtio_bus_info);
type_register_static(&virtio_s390_device_info);
type_register_static(&s390_virtio_serial);
type_register_static(&s390_virtio_blk);
type_register_static(&s390_virtio_net);
type_register_static(&s390_virtio_scsi);
#ifdef CONFIG_VHOST_SCSI
type_register_static(&s390_vhost_scsi);
#endif
type_register_static(&s390_virtio_rng);
type_register_static(&s390_virtio_bridge_info);
}
type_init(s390_virtio_register_types)
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