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virtio-9p: add the virtio-9p device.

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Create virtio-9p-device which extends virtio-device, so it can be connected on
virtio-bus.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-id: 1366708123-19626-2-git-send-email-fred.konrad@greensocs.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
KONRAD Frederic 2013-04-23 11:08:40 +02:00 committed by Anthony Liguori
parent 93b971c4ff
commit e7303c4303
3 changed files with 76 additions and 9 deletions
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73
hw/9pfs/virtio-9p-device.c
View File

@ -46,19 +46,30 @@ static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config)
g_free(cfg);
}
VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf)
static VirtIODevice *virtio_9p_common_init(DeviceState *dev, V9fsConf *conf,
V9fsState **ps)
{
V9fsState *s;
V9fsState *s = *ps;
int i, len;
struct stat stat;
FsDriverEntry *fse;
V9fsPath path;
s = (V9fsState *)virtio_common_init("virtio-9p",
VIRTIO_ID_9P,
sizeof(struct virtio_9p_config)+
MAX_TAG_LEN,
sizeof(V9fsState));
/*
* We have two cases here: the old virtio-9p-pci device, and the
* refactored virtio-9p.
*/
if (s == NULL) {
s = (V9fsState *)virtio_common_init("virtio-9p",
VIRTIO_ID_9P,
sizeof(struct virtio_9p_config)+
MAX_TAG_LEN,
sizeof(V9fsState));
} else {
virtio_init(VIRTIO_DEVICE(s), "virtio-9p", VIRTIO_ID_9P,
sizeof(struct virtio_9p_config) + MAX_TAG_LEN);
}
/* initialize pdu allocator */
QLIST_INIT(&s->free_list);
QLIST_INIT(&s->active_list);
@ -136,3 +147,51 @@ VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf)
return &s->vdev;
}
VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf)
{
V9fsState *s = NULL;
return virtio_9p_common_init(dev, conf, &s);
}
/* virtio-9p device */
static int virtio_9p_device_init(VirtIODevice *vdev)
{
DeviceState *qdev = DEVICE(vdev);
V9fsState *s = VIRTIO_9P(vdev);
V9fsConf *fsconf = &(s->fsconf);
if (virtio_9p_common_init(qdev, fsconf, &s) == NULL) {
return -1;
}
return 0;
}
static Property virtio_9p_properties[] = {
DEFINE_VIRTIO_9P_PROPERTIES(V9fsState, fsconf),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_9p_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
dc->props = virtio_9p_properties;
vdc->init = virtio_9p_device_init;
vdc->get_features = virtio_9p_get_features;
vdc->get_config = virtio_9p_get_config;
}
static const TypeInfo virtio_device_info = {
.name = TYPE_VIRTIO_9P,
.parent = TYPE_VIRTIO_DEVICE,
.instance_size = sizeof(V9fsState),
.class_init = virtio_9p_class_init,
};
static void virtio_9p_register_types(void)
{
type_register_static(&virtio_device_info);
}
type_init(virtio_9p_register_types)

9
hw/9pfs/virtio-9p.h
View File

@ -225,6 +225,7 @@ typedef struct V9fsState
CoRwlock rename_lock;
int32_t root_fid;
Error *migration_blocker;
V9fsConf fsconf;
} V9fsState;
typedef struct V9fsStatState {
@ -401,4 +402,12 @@ extern int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath,
#define pdu_unmarshal(pdu, offset, fmt, args...) \
v9fs_unmarshal(pdu->elem.out_sg, pdu->elem.out_num, offset, 1, fmt, ##args)
#define TYPE_VIRTIO_9P "virtio-9p-device"
#define VIRTIO_9P(obj) \
OBJECT_CHECK(V9fsState, (obj), TYPE_VIRTIO_9P)
#define DEFINE_VIRTIO_9P_PROPERTIES(_state, _field) \
DEFINE_PROP_STRING("mount_tag", _state, _field.tag), \
DEFINE_PROP_STRING("fsdev", _state, _field.fsdev_id)
#endif

3
hw/virtio/virtio-pci.c
View File

@ -1040,8 +1040,7 @@ static Property virtio_9p_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
DEFINE_VIRTIO_9P_PROPERTIES(VirtIOPCIProxy, fsconf),
DEFINE_PROP_END_OF_LIST(),
};