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https://gitlab.com/qemu-project/qemu
synced 2024-09-06 09:55:55 +00:00
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:
parent
6449a41a4d
commit
bcb2b582f3
111
hw/s390x/css.c
111
hw/s390x/css.c
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@ -1293,6 +1293,117 @@ int css_enable_mss(void)
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return 0;
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}
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void subch_device_save(SubchDev *s, QEMUFile *f)
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{
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int i;
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qemu_put_byte(f, s->cssid);
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qemu_put_byte(f, s->ssid);
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qemu_put_be16(f, s->schid);
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qemu_put_be16(f, s->devno);
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qemu_put_byte(f, s->thinint_active);
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/* SCHIB */
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/* PMCW */
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qemu_put_be32(f, s->curr_status.pmcw.intparm);
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qemu_put_be16(f, s->curr_status.pmcw.flags);
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qemu_put_be16(f, s->curr_status.pmcw.devno);
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qemu_put_byte(f, s->curr_status.pmcw.lpm);
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qemu_put_byte(f, s->curr_status.pmcw.pnom);
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qemu_put_byte(f, s->curr_status.pmcw.lpum);
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qemu_put_byte(f, s->curr_status.pmcw.pim);
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qemu_put_be16(f, s->curr_status.pmcw.mbi);
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qemu_put_byte(f, s->curr_status.pmcw.pom);
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qemu_put_byte(f, s->curr_status.pmcw.pam);
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qemu_put_buffer(f, s->curr_status.pmcw.chpid, 8);
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qemu_put_be32(f, s->curr_status.pmcw.chars);
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/* SCSW */
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qemu_put_be16(f, s->curr_status.scsw.flags);
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qemu_put_be16(f, s->curr_status.scsw.ctrl);
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qemu_put_be32(f, s->curr_status.scsw.cpa);
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qemu_put_byte(f, s->curr_status.scsw.dstat);
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qemu_put_byte(f, s->curr_status.scsw.cstat);
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qemu_put_be16(f, s->curr_status.scsw.count);
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qemu_put_be64(f, s->curr_status.mba);
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qemu_put_buffer(f, s->curr_status.mda, 4);
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/* end SCHIB */
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qemu_put_buffer(f, s->sense_data, 32);
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qemu_put_be64(f, s->channel_prog);
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/* last cmd */
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qemu_put_byte(f, s->last_cmd.cmd_code);
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qemu_put_byte(f, s->last_cmd.flags);
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qemu_put_be16(f, s->last_cmd.count);
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qemu_put_be32(f, s->last_cmd.cda);
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qemu_put_byte(f, s->last_cmd_valid);
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qemu_put_byte(f, s->id.reserved);
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qemu_put_be16(f, s->id.cu_type);
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qemu_put_byte(f, s->id.cu_model);
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qemu_put_be16(f, s->id.dev_type);
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qemu_put_byte(f, s->id.dev_model);
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qemu_put_byte(f, s->id.unused);
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for (i = 0; i < ARRAY_SIZE(s->id.ciw); i++) {
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qemu_put_byte(f, s->id.ciw[i].type);
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qemu_put_byte(f, s->id.ciw[i].command);
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qemu_put_be16(f, s->id.ciw[i].count);
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}
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return;
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}
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int subch_device_load(SubchDev *s, QEMUFile *f)
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{
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int i;
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s->cssid = qemu_get_byte(f);
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s->ssid = qemu_get_byte(f);
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s->schid = qemu_get_be16(f);
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s->devno = qemu_get_be16(f);
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s->thinint_active = qemu_get_byte(f);
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/* SCHIB */
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/* PMCW */
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s->curr_status.pmcw.intparm = qemu_get_be32(f);
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s->curr_status.pmcw.flags = qemu_get_be16(f);
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s->curr_status.pmcw.devno = qemu_get_be16(f);
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s->curr_status.pmcw.lpm = qemu_get_byte(f);
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s->curr_status.pmcw.pnom = qemu_get_byte(f);
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s->curr_status.pmcw.lpum = qemu_get_byte(f);
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s->curr_status.pmcw.pim = qemu_get_byte(f);
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s->curr_status.pmcw.mbi = qemu_get_be16(f);
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s->curr_status.pmcw.pom = qemu_get_byte(f);
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s->curr_status.pmcw.pam = qemu_get_byte(f);
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qemu_get_buffer(f, s->curr_status.pmcw.chpid, 8);
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s->curr_status.pmcw.chars = qemu_get_be32(f);
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/* SCSW */
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s->curr_status.scsw.flags = qemu_get_be16(f);
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s->curr_status.scsw.ctrl = qemu_get_be16(f);
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s->curr_status.scsw.cpa = qemu_get_be32(f);
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s->curr_status.scsw.dstat = qemu_get_byte(f);
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s->curr_status.scsw.cstat = qemu_get_byte(f);
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s->curr_status.scsw.count = qemu_get_be16(f);
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s->curr_status.mba = qemu_get_be64(f);
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qemu_get_buffer(f, s->curr_status.mda, 4);
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/* end SCHIB */
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qemu_get_buffer(f, s->sense_data, 32);
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s->channel_prog = qemu_get_be64(f);
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/* last cmd */
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s->last_cmd.cmd_code = qemu_get_byte(f);
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s->last_cmd.flags = qemu_get_byte(f);
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s->last_cmd.count = qemu_get_be16(f);
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s->last_cmd.cda = qemu_get_be32(f);
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s->last_cmd_valid = qemu_get_byte(f);
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s->id.reserved = qemu_get_byte(f);
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s->id.cu_type = qemu_get_be16(f);
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s->id.cu_model = qemu_get_byte(f);
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s->id.dev_type = qemu_get_be16(f);
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s->id.dev_model = qemu_get_byte(f);
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s->id.unused = qemu_get_byte(f);
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for (i = 0; i < ARRAY_SIZE(s->id.ciw); i++) {
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s->id.ciw[i].type = qemu_get_byte(f);
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s->id.ciw[i].command = qemu_get_byte(f);
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s->id.ciw[i].count = qemu_get_be16(f);
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}
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return 0;
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}
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static void css_init(void)
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{
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channel_subsys = g_malloc0(sizeof(*channel_subsys));
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@ -85,6 +85,8 @@ struct SubchDev {
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typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid,
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uint16_t schid);
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void subch_device_save(SubchDev *s, QEMUFile *f);
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int subch_device_load(SubchDev *s, QEMUFile *f);
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int css_create_css_image(uint8_t cssid, bool default_image);
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bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
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void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,
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@ -1275,6 +1275,97 @@ irqroute_error:
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return r;
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}
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static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
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{
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VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
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VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
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qemu_put_be16(f, virtio_queue_vector(vdev, n));
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}
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static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
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{
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VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
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VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
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uint16_t vector;
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qemu_get_be16s(f, &vector);
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virtio_queue_set_vector(vdev, n , vector);
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return 0;
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}
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static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
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{
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VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
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SubchDev *s = dev->sch;
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subch_device_save(s, f);
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if (dev->indicators != NULL) {
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qemu_put_be32(f, dev->indicators->len);
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qemu_put_be64(f, dev->indicators->addr);
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} else {
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qemu_put_be32(f, 0);
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qemu_put_be64(f, 0UL);
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}
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if (dev->indicators2 != NULL) {
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qemu_put_be32(f, dev->indicators2->len);
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qemu_put_be64(f, dev->indicators2->addr);
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} else {
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qemu_put_be32(f, 0);
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qemu_put_be64(f, 0UL);
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}
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if (dev->summary_indicator != NULL) {
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qemu_put_be32(f, dev->summary_indicator->len);
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qemu_put_be64(f, dev->summary_indicator->addr);
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} else {
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qemu_put_be32(f, 0);
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qemu_put_be64(f, 0UL);
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}
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qemu_put_be64(f, dev->routes.adapter.ind_offset);
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qemu_put_byte(f, dev->thinint_isc);
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}
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static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
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{
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VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
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SubchDev *s = dev->sch;
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int len;
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s->driver_data = dev;
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subch_device_load(s, f);
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len = qemu_get_be32(f);
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if (len != 0) {
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dev->indicators = get_indicator(qemu_get_be64(f), len);
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} else {
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qemu_get_be64(f);
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dev->indicators = NULL;
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}
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len = qemu_get_be32(f);
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if (len != 0) {
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dev->indicators2 = get_indicator(qemu_get_be64(f), len);
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} else {
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qemu_get_be64(f);
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dev->indicators2 = NULL;
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}
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len = qemu_get_be32(f);
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if (len != 0) {
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dev->summary_indicator = get_indicator(qemu_get_be64(f), len);
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} else {
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qemu_get_be64(f);
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dev->summary_indicator = NULL;
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}
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dev->routes.adapter.ind_offset = qemu_get_be64(f);
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dev->thinint_isc = qemu_get_byte(f);
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if (s->thinint_active) {
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return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
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dev->thinint_isc, true, false,
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&dev->routes.adapter.adapter_id);
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}
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return 0;
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}
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/**************** Virtio-ccw Bus Device Descriptions *******************/
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static Property virtio_ccw_net_properties[] = {
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@ -1597,6 +1688,10 @@ static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
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k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
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k->set_host_notifier = virtio_ccw_set_host_notifier;
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k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
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k->save_queue = virtio_ccw_save_queue;
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k->load_queue = virtio_ccw_load_queue;
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k->save_config = virtio_ccw_save_config;
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k->load_config = virtio_ccw_load_config;
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}
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static const TypeInfo virtio_ccw_bus_info = {
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