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s390/virtio-ccw: migration support 

This patch adds live migration support for virtio-ccw devices.
It's not done with vmstate because virtio itself is not yet ported
to vmstate either.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Jens Freimann 2014-02-11 13:29:44 +01:00 committed by Cornelia Huck
parent 6449a41a4d
commit bcb2b582f3
3 changed files with 208 additions and 0 deletions
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111
hw/s390x/css.c
View File

@ -1293,6 +1293,117 @@ int css_enable_mss(void)
return 0;
}
void subch_device_save(SubchDev *s, QEMUFile *f)
{
int i;
qemu_put_byte(f, s->cssid);
qemu_put_byte(f, s->ssid);
qemu_put_be16(f, s->schid);
qemu_put_be16(f, s->devno);
qemu_put_byte(f, s->thinint_active);
/* SCHIB */
/* PMCW */
qemu_put_be32(f, s->curr_status.pmcw.intparm);
qemu_put_be16(f, s->curr_status.pmcw.flags);
qemu_put_be16(f, s->curr_status.pmcw.devno);
qemu_put_byte(f, s->curr_status.pmcw.lpm);
qemu_put_byte(f, s->curr_status.pmcw.pnom);
qemu_put_byte(f, s->curr_status.pmcw.lpum);
qemu_put_byte(f, s->curr_status.pmcw.pim);
qemu_put_be16(f, s->curr_status.pmcw.mbi);
qemu_put_byte(f, s->curr_status.pmcw.pom);
qemu_put_byte(f, s->curr_status.pmcw.pam);
qemu_put_buffer(f, s->curr_status.pmcw.chpid, 8);
qemu_put_be32(f, s->curr_status.pmcw.chars);
/* SCSW */
qemu_put_be16(f, s->curr_status.scsw.flags);
qemu_put_be16(f, s->curr_status.scsw.ctrl);
qemu_put_be32(f, s->curr_status.scsw.cpa);
qemu_put_byte(f, s->curr_status.scsw.dstat);
qemu_put_byte(f, s->curr_status.scsw.cstat);
qemu_put_be16(f, s->curr_status.scsw.count);
qemu_put_be64(f, s->curr_status.mba);
qemu_put_buffer(f, s->curr_status.mda, 4);
/* end SCHIB */
qemu_put_buffer(f, s->sense_data, 32);
qemu_put_be64(f, s->channel_prog);
/* last cmd */
qemu_put_byte(f, s->last_cmd.cmd_code);
qemu_put_byte(f, s->last_cmd.flags);
qemu_put_be16(f, s->last_cmd.count);
qemu_put_be32(f, s->last_cmd.cda);
qemu_put_byte(f, s->last_cmd_valid);
qemu_put_byte(f, s->id.reserved);
qemu_put_be16(f, s->id.cu_type);
qemu_put_byte(f, s->id.cu_model);
qemu_put_be16(f, s->id.dev_type);
qemu_put_byte(f, s->id.dev_model);
qemu_put_byte(f, s->id.unused);
for (i = 0; i < ARRAY_SIZE(s->id.ciw); i++) {
qemu_put_byte(f, s->id.ciw[i].type);
qemu_put_byte(f, s->id.ciw[i].command);
qemu_put_be16(f, s->id.ciw[i].count);
}
return;
}
int subch_device_load(SubchDev *s, QEMUFile *f)
{
int i;
s->cssid = qemu_get_byte(f);
s->ssid = qemu_get_byte(f);
s->schid = qemu_get_be16(f);
s->devno = qemu_get_be16(f);
s->thinint_active = qemu_get_byte(f);
/* SCHIB */
/* PMCW */
s->curr_status.pmcw.intparm = qemu_get_be32(f);
s->curr_status.pmcw.flags = qemu_get_be16(f);
s->curr_status.pmcw.devno = qemu_get_be16(f);
s->curr_status.pmcw.lpm = qemu_get_byte(f);
s->curr_status.pmcw.pnom = qemu_get_byte(f);
s->curr_status.pmcw.lpum = qemu_get_byte(f);
s->curr_status.pmcw.pim = qemu_get_byte(f);
s->curr_status.pmcw.mbi = qemu_get_be16(f);
s->curr_status.pmcw.pom = qemu_get_byte(f);
s->curr_status.pmcw.pam = qemu_get_byte(f);
qemu_get_buffer(f, s->curr_status.pmcw.chpid, 8);
s->curr_status.pmcw.chars = qemu_get_be32(f);
/* SCSW */
s->curr_status.scsw.flags = qemu_get_be16(f);
s->curr_status.scsw.ctrl = qemu_get_be16(f);
s->curr_status.scsw.cpa = qemu_get_be32(f);
s->curr_status.scsw.dstat = qemu_get_byte(f);
s->curr_status.scsw.cstat = qemu_get_byte(f);
s->curr_status.scsw.count = qemu_get_be16(f);
s->curr_status.mba = qemu_get_be64(f);
qemu_get_buffer(f, s->curr_status.mda, 4);
/* end SCHIB */
qemu_get_buffer(f, s->sense_data, 32);
s->channel_prog = qemu_get_be64(f);
/* last cmd */
s->last_cmd.cmd_code = qemu_get_byte(f);
s->last_cmd.flags = qemu_get_byte(f);
s->last_cmd.count = qemu_get_be16(f);
s->last_cmd.cda = qemu_get_be32(f);
s->last_cmd_valid = qemu_get_byte(f);
s->id.reserved = qemu_get_byte(f);
s->id.cu_type = qemu_get_be16(f);
s->id.cu_model = qemu_get_byte(f);
s->id.dev_type = qemu_get_be16(f);
s->id.dev_model = qemu_get_byte(f);
s->id.unused = qemu_get_byte(f);
for (i = 0; i < ARRAY_SIZE(s->id.ciw); i++) {
s->id.ciw[i].type = qemu_get_byte(f);
s->id.ciw[i].command = qemu_get_byte(f);
s->id.ciw[i].count = qemu_get_be16(f);
}
return 0;
}
static void css_init(void)
{
channel_subsys = g_malloc0(sizeof(*channel_subsys));

2
hw/s390x/css.h
View File

@ -85,6 +85,8 @@ struct SubchDev {
typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid,
uint16_t schid);
void subch_device_save(SubchDev *s, QEMUFile *f);
int subch_device_load(SubchDev *s, QEMUFile *f);
int css_create_css_image(uint8_t cssid, bool default_image);
bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,

95
hw/s390x/virtio-ccw.c
View File

@ -1275,6 +1275,97 @@ irqroute_error:
return r;
}
static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
qemu_put_be16(f, virtio_queue_vector(vdev, n));
}
static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
uint16_t vector;
qemu_get_be16s(f, &vector);
virtio_queue_set_vector(vdev, n , vector);
return 0;
}
static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
SubchDev *s = dev->sch;
subch_device_save(s, f);
if (dev->indicators != NULL) {
qemu_put_be32(f, dev->indicators->len);
qemu_put_be64(f, dev->indicators->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
if (dev->indicators2 != NULL) {
qemu_put_be32(f, dev->indicators2->len);
qemu_put_be64(f, dev->indicators2->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
if (dev->summary_indicator != NULL) {
qemu_put_be32(f, dev->summary_indicator->len);
qemu_put_be64(f, dev->summary_indicator->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
qemu_put_be64(f, dev->routes.adapter.ind_offset);
qemu_put_byte(f, dev->thinint_isc);
}
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
SubchDev *s = dev->sch;
int len;
s->driver_data = dev;
subch_device_load(s, f);
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->indicators = NULL;
}
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators2 = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->indicators2 = NULL;
}
len = qemu_get_be32(f);
if (len != 0) {
dev->summary_indicator = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->summary_indicator = NULL;
}
dev->routes.adapter.ind_offset = qemu_get_be64(f);
dev->thinint_isc = qemu_get_byte(f);
if (s->thinint_active) {
return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc, true, false,
&dev->routes.adapter.adapter_id);
}
return 0;
}
/**************** Virtio-ccw Bus Device Descriptions *******************/
static Property virtio_ccw_net_properties[] = {
@ -1597,6 +1688,10 @@ static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
k->set_host_notifier = virtio_ccw_set_host_notifier;
k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
k->save_queue = virtio_ccw_save_queue;
k->load_queue = virtio_ccw_load_queue;
k->save_config = virtio_ccw_save_config;
k->load_config = virtio_ccw_load_config;
}
static const TypeInfo virtio_ccw_bus_info = {