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qemu/hw/s390x/s390-virtio-bus.c
Cornelia Huck 6b8f102054 virtio: move host_features 
Move host_features from the individual transport proxies into
the virtio device. Transports may continue to add feature bits
during device plugging.

This should it make easier to offer different sets of host features
for virtio-1/transitional support.

Tested-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-05-31 16:27:18 +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
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_PCI_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_PCI_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);
}
/**************** 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;
}
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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