[qemu.git] / hw / s390x / s390-stattrib.c

/*
 * s390 storage attributes device
 *
 * Copyright 2016 IBM Corp.
 * Author(s): Claudio Imbrenda <[email protected]>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or (at
 * your option) any later version. See the COPYING file in the top-level
 * directory.
 */

#include "qemu/osdep.h"
#include "qemu/units.h"
#include "cpu.h"
#include "migration/qemu-file.h"
#include "migration/register.h"
#include "hw/s390x/storage-attributes.h"
#include "qemu/error-report.h"
#include "exec/ram_addr.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"

/* 512KiB cover 2GB of guest memory */
#define CMMA_BLOCK_SIZE  (512 * KiB)

#define STATTR_FLAG_EOS     0x01ULL
#define STATTR_FLAG_MORE    0x02ULL
#define STATTR_FLAG_ERROR   0x04ULL
#define STATTR_FLAG_DONE    0x08ULL

static S390StAttribState *s390_get_stattrib_device(void)
{
    S390StAttribState *sas;

    sas = S390_STATTRIB(object_resolve_path_type("", TYPE_S390_STATTRIB, NULL));
    assert(sas);
    return sas;
}

void s390_stattrib_init(void)
{
    Object *obj;

    obj = kvm_s390_stattrib_create();
    if (!obj) {
        obj = object_new(TYPE_QEMU_S390_STATTRIB);
    }

    object_property_add_child(qdev_get_machine(), TYPE_S390_STATTRIB,
                              obj);
    object_unref(obj);

    qdev_init_nofail(DEVICE(obj));
}

/* Console commands: */

void hmp_migrationmode(Monitor *mon, const QDict *qdict)
{
    S390StAttribState *sas = s390_get_stattrib_device();
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    uint64_t what = qdict_get_int(qdict, "mode");
    int r;

    r = sac->set_migrationmode(sas, what);
    if (r < 0) {
        monitor_printf(mon, "Error: %s", strerror(-r));
    }
}

void hmp_info_cmma(Monitor *mon, const QDict *qdict)
{
    S390StAttribState *sas = s390_get_stattrib_device();
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    uint64_t addr = qdict_get_int(qdict, "addr");
    uint64_t buflen = qdict_get_try_int(qdict, "count", 8);
    uint8_t *vals;
    int cx, len;

    vals = g_try_malloc(buflen);
    if (!vals) {
        monitor_printf(mon, "Error: %s\n", strerror(errno));
        return;
    }

    len = sac->peek_stattr(sas, addr / TARGET_PAGE_SIZE, buflen, vals);
    if (len < 0) {
        monitor_printf(mon, "Error: %s", strerror(-len));
        goto out;
    }

    monitor_printf(mon, "  CMMA attributes, "
                   "pages %" PRIu64 "+%d (0x%" PRIx64 "):\n",
                   addr / TARGET_PAGE_SIZE, len, addr & ~TARGET_PAGE_MASK);
    for (cx = 0; cx < len; cx++) {
        if (cx % 8 == 7) {
            monitor_printf(mon, "%02x\n", vals[cx]);
        } else {
            monitor_printf(mon, "%02x", vals[cx]);
        }
    }
    monitor_printf(mon, "\n");

out:
    g_free(vals);
}

/* Migration support: */

static int cmma_load(QEMUFile *f, void *opaque, int version_id)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    uint64_t count, cur_gfn;
    int flags, ret = 0;
    ram_addr_t addr;
    uint8_t *buf;

    while (!ret) {
        addr = qemu_get_be64(f);
        flags = addr & ~TARGET_PAGE_MASK;
        addr &= TARGET_PAGE_MASK;

        switch (flags) {
        case STATTR_FLAG_MORE: {
            cur_gfn = addr / TARGET_PAGE_SIZE;
            count = qemu_get_be64(f);
            buf = g_try_malloc(count);
            if (!buf) {
                error_report("cmma_load could not allocate memory");
                ret = -ENOMEM;
                break;
            }

            qemu_get_buffer(f, buf, count);
            ret = sac->set_stattr(sas, cur_gfn, count, buf);
            if (ret < 0) {
                error_report("Error %d while setting storage attributes", ret);
            }
            g_free(buf);
            break;
        }
        case STATTR_FLAG_ERROR: {
            error_report("Storage attributes data is incomplete");
            ret = -EINVAL;
            break;
        }
        case STATTR_FLAG_DONE:
            /* This is after the last pre-copied value has been sent, nothing
             * more will be sent after this. Pre-copy has finished, and we
             * are done flushing all the remaining values. Now the target
             * system is about to take over. We synchronize the buffer to
             * apply the actual correct values where needed.
             */
             sac->synchronize(sas);
            break;
        case STATTR_FLAG_EOS:
            /* Normal exit */
            return 0;
        default:
            error_report("Unexpected storage attribute flag data: %#x", flags);
            ret = -EINVAL;
        }
    }

    return ret;
}

static int cmma_save_setup(QEMUFile *f, void *opaque)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    int res;
    /*
     * Signal that we want to start a migration, thus needing PGSTE dirty
     * tracking.
     */
    res = sac->set_migrationmode(sas, 1);
    if (res) {
        return res;
    }
    qemu_put_be64(f, STATTR_FLAG_EOS);
    return 0;
}

static void cmma_save_pending(QEMUFile *f, void *opaque, uint64_t max_size,
                              uint64_t *res_precopy_only,
                              uint64_t *res_compatible,
                              uint64_t *res_postcopy_only)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    long long res = sac->get_dirtycount(sas);

    if (res >= 0) {
        *res_precopy_only += res;
    }
}

static int cmma_save(QEMUFile *f, void *opaque, int final)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    uint8_t *buf;
    int r, cx, reallen = 0, ret = 0;
    uint32_t buflen = CMMA_BLOCK_SIZE;
    uint64_t start_gfn = sas->migration_cur_gfn;

    buf = g_try_malloc(buflen);
    if (!buf) {
        error_report("Could not allocate memory to save storage attributes");
        return -ENOMEM;
    }

    while (final ? 1 : qemu_file_rate_limit(f) == 0) {
        reallen = sac->get_stattr(sas, &start_gfn, buflen, buf);
        if (reallen < 0) {
            g_free(buf);
            return reallen;
        }

        ret = 1;
        if (!reallen) {
            break;
        }
        qemu_put_be64(f, (start_gfn << TARGET_PAGE_BITS) | STATTR_FLAG_MORE);
        qemu_put_be64(f, reallen);
        for (cx = 0; cx < reallen; cx++) {
            qemu_put_byte(f, buf[cx]);
        }
        if (!sac->get_dirtycount(sas)) {
            break;
        }
    }

    sas->migration_cur_gfn = start_gfn + reallen;
    g_free(buf);
    if (final) {
        qemu_put_be64(f, STATTR_FLAG_DONE);
    }
    qemu_put_be64(f, STATTR_FLAG_EOS);

    r = qemu_file_get_error(f);
    if (r < 0) {
        return r;
    }

    return ret;
}

static int cmma_save_iterate(QEMUFile *f, void *opaque)
{
    return cmma_save(f, opaque, 0);
}

static int cmma_save_complete(QEMUFile *f, void *opaque)
{
    return cmma_save(f, opaque, 1);
}

static void cmma_save_cleanup(void *opaque)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    sac->set_migrationmode(sas, 0);
}

static bool cmma_active(void *opaque)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    return sac->get_active(sas);
}

/* QEMU object: */

static void qemu_s390_stattrib_instance_init(Object *obj)
{
}

static int qemu_s390_peek_stattr_stub(S390StAttribState *sa, uint64_t start_gfn,
                                     uint32_t count, uint8_t *values)
{
    return 0;
}
static void qemu_s390_synchronize_stub(S390StAttribState *sa)
{
}
static int qemu_s390_get_stattr_stub(S390StAttribState *sa, uint64_t *start_gfn,
                                     uint32_t count, uint8_t *values)
{
    return 0;
}
static long long qemu_s390_get_dirtycount_stub(S390StAttribState *sa)
{
    return 0;
}
static int qemu_s390_set_migrationmode_stub(S390StAttribState *sa, bool value)
{
    return 0;
}

static int qemu_s390_get_active(S390StAttribState *sa)
{
    return sa->migration_enabled;
}

static void qemu_s390_stattrib_class_init(ObjectClass *oc, void *data)
{
    S390StAttribClass *sa_cl = S390_STATTRIB_CLASS(oc);
    DeviceClass *dc = DEVICE_CLASS(oc);

    sa_cl->synchronize = qemu_s390_synchronize_stub;
    sa_cl->get_stattr = qemu_s390_get_stattr_stub;
    sa_cl->set_stattr = qemu_s390_peek_stattr_stub;
    sa_cl->peek_stattr = qemu_s390_peek_stattr_stub;
    sa_cl->set_migrationmode = qemu_s390_set_migrationmode_stub;
    sa_cl->get_dirtycount = qemu_s390_get_dirtycount_stub;
    sa_cl->get_active = qemu_s390_get_active;

    /* Reason: Can only be instantiated one time (internally) */
    dc->user_creatable = false;
}

static const TypeInfo qemu_s390_stattrib_info = {
    .name          = TYPE_QEMU_S390_STATTRIB,
    .parent        = TYPE_S390_STATTRIB,
    .instance_init = qemu_s390_stattrib_instance_init,
    .instance_size = sizeof(QEMUS390StAttribState),
    .class_init    = qemu_s390_stattrib_class_init,
    .class_size    = sizeof(S390StAttribClass),
};

/* Generic abstract object: */

static void s390_stattrib_realize(DeviceState *dev, Error **errp)
{
    bool ambiguous = false;

    object_resolve_path_type("", TYPE_S390_STATTRIB, &ambiguous);
    if (ambiguous) {
        error_setg(errp, "storage_attributes device already exists");
    }
}

static void s390_stattrib_class_init(ObjectClass *oc, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(oc);

    dc->hotpluggable = false;
    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
    dc->realize = s390_stattrib_realize;
}

static inline bool s390_stattrib_get_migration_enabled(Object *obj,
                                                       Error **errp)
{
    S390StAttribState *s = S390_STATTRIB(obj);

    return s->migration_enabled;
}

static inline void s390_stattrib_set_migration_enabled(Object *obj, bool value,
                                            Error **errp)
{
    S390StAttribState *s = S390_STATTRIB(obj);

    s->migration_enabled = value;
}

static SaveVMHandlers savevm_s390_stattrib_handlers = {
    .save_setup = cmma_save_setup,
    .save_live_iterate = cmma_save_iterate,
    .save_live_complete_precopy = cmma_save_complete,
    .save_live_pending = cmma_save_pending,
    .save_cleanup = cmma_save_cleanup,
    .load_state = cmma_load,
    .is_active = cmma_active,
};

static void s390_stattrib_instance_init(Object *obj)
{
    S390StAttribState *sas = S390_STATTRIB(obj);

    register_savevm_live(TYPE_S390_STATTRIB, 0, 0,
                         &savevm_s390_stattrib_handlers, sas);

    object_property_add_bool(obj, "migration-enabled",
                             s390_stattrib_get_migration_enabled,
                             s390_stattrib_set_migration_enabled);
    object_property_set_bool(obj, true, "migration-enabled", NULL);
    sas->migration_cur_gfn = 0;
}

static const TypeInfo s390_stattrib_info = {
    .name          = TYPE_S390_STATTRIB,
    .parent        = TYPE_DEVICE,
    .instance_init = s390_stattrib_instance_init,
    .instance_size = sizeof(S390StAttribState),
    .class_init    = s390_stattrib_class_init,
    .class_size    = sizeof(S390StAttribClass),
    .abstract      = true,
};

static void s390_stattrib_register_types(void)
{
    type_register_static(&s390_stattrib_info);
    type_register_static(&qemu_s390_stattrib_info);
}

type_init(s390_stattrib_register_types)
Commit	Line	Data
903fd80b CI	1	/*
	2	* s390 storage attributes device
	3	*
	4	* Copyright 2016 IBM Corp.
	5	* Author(s): Claudio Imbrenda <[email protected]>
	6	*
	7	* This work is licensed under the terms of the GNU GPL, version 2 or (at
	8	* your option) any later version. See the COPYING file in the top-level
	9	* directory.
	10	*/
	11
	12	#include "qemu/osdep.h"
393fc4c7	13	#include "qemu/units.h"
e654ca84	14	#include "cpu.h"
903fd80b CI	15	#include "migration/qemu-file.h"
	16	#include "migration/register.h"
	17	#include "hw/s390x/storage-attributes.h"
	18	#include "qemu/error-report.h"
903fd80b CI	19	#include "exec/ram_addr.h"
903fd80b CI	20	#include "qapi/error.h"
452fcdbc	21	#include "qapi/qmp/qdict.h"
903fd80b	22
17f45666 CI	23	/* 512KiB cover 2GB of guest memory */
17f45666 CI	24	#define CMMA_BLOCK_SIZE (512 * KiB)
903fd80b CI	25
	26	#define STATTR_FLAG_EOS 0x01ULL
	27	#define STATTR_FLAG_MORE 0x02ULL
	28	#define STATTR_FLAG_ERROR 0x04ULL
	29	#define STATTR_FLAG_DONE 0x08ULL
	30
f860d497 CI	31	static S390StAttribState *s390_get_stattrib_device(void)
	32	{
	33	S390StAttribState *sas;
	34
	35	sas = S390_STATTRIB(object_resolve_path_type("", TYPE_S390_STATTRIB, NULL));
	36	assert(sas);
	37	return sas;
	38	}
	39
903fd80b CI	40	void s390_stattrib_init(void)
	41	{
	42	Object *obj;
	43
	44	obj = kvm_s390_stattrib_create();
	45	if (!obj) {
	46	obj = object_new(TYPE_QEMU_S390_STATTRIB);
	47	}
	48
	49	object_property_add_child(qdev_get_machine(), TYPE_S390_STATTRIB,
d2623129	50	obj);
903fd80b CI	51	object_unref(obj);
	52
	53	qdev_init_nofail(DEVICE(obj));
	54	}
	55
f860d497 CI	56	/* Console commands: */
	57
	58	void hmp_migrationmode(Monitor mon, const QDict qdict)
	59	{
	60	S390StAttribState *sas = s390_get_stattrib_device();
	61	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	62	uint64_t what = qdict_get_int(qdict, "mode");
	63	int r;
	64
	65	r = sac->set_migrationmode(sas, what);
	66	if (r < 0) {
	67	monitor_printf(mon, "Error: %s", strerror(-r));
	68	}
	69	}
	70
	71	void hmp_info_cmma(Monitor mon, const QDict qdict)
	72	{
	73	S390StAttribState *sas = s390_get_stattrib_device();
	74	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	75	uint64_t addr = qdict_get_int(qdict, "addr");
	76	uint64_t buflen = qdict_get_try_int(qdict, "count", 8);
	77	uint8_t *vals;
	78	int cx, len;
	79
	80	vals = g_try_malloc(buflen);
	81	if (!vals) {
	82	monitor_printf(mon, "Error: %s\n", strerror(errno));
	83	return;
	84	}
	85
	86	len = sac->peek_stattr(sas, addr / TARGET_PAGE_SIZE, buflen, vals);
	87	if (len < 0) {
	88	monitor_printf(mon, "Error: %s", strerror(-len));
	89	goto out;
	90	}
	91
	92	monitor_printf(mon, " CMMA attributes, "
	93	"pages %" PRIu64 "+%d (0x%" PRIx64 "):\n",
	94	addr / TARGET_PAGE_SIZE, len, addr & ~TARGET_PAGE_MASK);
	95	for (cx = 0; cx < len; cx++) {
	96	if (cx % 8 == 7) {
	97	monitor_printf(mon, "%02x\n", vals[cx]);
	98	} else {
	99	monitor_printf(mon, "%02x", vals[cx]);
	100	}
	101	}
	102	monitor_printf(mon, "\n");
	103
	104	out:
	105	g_free(vals);
	106	}
	107
903fd80b CI	108	/* Migration support: */
	109
	110	static int cmma_load(QEMUFile f, void opaque, int version_id)
	111	{
	112	S390StAttribState *sas = S390_STATTRIB(opaque);
	113	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	114	uint64_t count, cur_gfn;
	115	int flags, ret = 0;
	116	ram_addr_t addr;
	117	uint8_t *buf;
	118
	119	while (!ret) {
	120	addr = qemu_get_be64(f);
	121	flags = addr & ~TARGET_PAGE_MASK;
	122	addr &= TARGET_PAGE_MASK;
	123
	124	switch (flags) {
	125	case STATTR_FLAG_MORE: {
	126	cur_gfn = addr / TARGET_PAGE_SIZE;
	127	count = qemu_get_be64(f);
	128	buf = g_try_malloc(count);
	129	if (!buf) {
	130	error_report("cmma_load could not allocate memory");
	131	ret = -ENOMEM;
	132	break;
	133	}
	134
	135	qemu_get_buffer(f, buf, count);
	136	ret = sac->set_stattr(sas, cur_gfn, count, buf);
	137	if (ret < 0) {
	138	error_report("Error %d while setting storage attributes", ret);
	139	}
	140	g_free(buf);
	141	break;
	142	}
	143	case STATTR_FLAG_ERROR: {
	144	error_report("Storage attributes data is incomplete");
	145	ret = -EINVAL;
	146	break;
	147	}
	148	case STATTR_FLAG_DONE:
	149	/* This is after the last pre-copied value has been sent, nothing
	150	* more will be sent after this. Pre-copy has finished, and we
	151	* are done flushing all the remaining values. Now the target
	152	* system is about to take over. We synchronize the buffer to
	153	* apply the actual correct values where needed.
	154	*/
	155	sac->synchronize(sas);
	156	break;
	157	case STATTR_FLAG_EOS:
	158	/* Normal exit */
	159	return 0;
	160	default:
	161	error_report("Unexpected storage attribute flag data: %#x", flags);
	162	ret = -EINVAL;
	163	}
	164	}
	165
	166	return ret;
	167	}
	168
	169	static int cmma_save_setup(QEMUFile f, void opaque)
	170	{
	171	S390StAttribState *sas = S390_STATTRIB(opaque);
172	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
173	int res;
174	/*
175	* Signal that we want to start a migration, thus needing PGSTE dirty
176	* tracking.
177	*/
178	res = sac->set_migrationmode(sas, 1);
179	if (res) {
180	return res;
181	}
182	qemu_put_be64(f, STATTR_FLAG_EOS);
183	return 0;
184	}
185
186	static void cmma_save_pending(QEMUFile f, void opaque, uint64_t max_size,
47995026 VSO	187	uint64_t *res_precopy_only,
	188	uint64_t *res_compatible,
	189	uint64_t *res_postcopy_only)
903fd80b CI	190	{
	191	S390StAttribState *sas = S390_STATTRIB(opaque);
	192	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	193	long long res = sac->get_dirtycount(sas);
	194
	195	if (res >= 0) {
47995026	196	*res_precopy_only += res;
903fd80b CI	197	}
	198	}
	199
	200	static int cmma_save(QEMUFile f, void opaque, int final)
	201	{
	202	S390StAttribState *sas = S390_STATTRIB(opaque);
	203	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	204	uint8_t *buf;
	205	int r, cx, reallen = 0, ret = 0;
17f45666	206	uint32_t buflen = CMMA_BLOCK_SIZE;
903fd80b CI	207	uint64_t start_gfn = sas->migration_cur_gfn;
	208
	209	buf = g_try_malloc(buflen);
	210	if (!buf) {
	211	error_report("Could not allocate memory to save storage attributes");
	212	return -ENOMEM;
	213	}
	214
	215	while (final ? 1 : qemu_file_rate_limit(f) == 0) {
	216	reallen = sac->get_stattr(sas, &start_gfn, buflen, buf);
	217	if (reallen < 0) {
	218	g_free(buf);
	219	return reallen;
	220	}
	221
	222	ret = 1;
	223	if (!reallen) {
	224	break;
	225	}
	226	qemu_put_be64(f, (start_gfn << TARGET_PAGE_BITS) \| STATTR_FLAG_MORE);
	227	qemu_put_be64(f, reallen);
	228	for (cx = 0; cx < reallen; cx++) {
	229	qemu_put_byte(f, buf[cx]);
	230	}
	231	if (!sac->get_dirtycount(sas)) {
	232	break;
	233	}
	234	}
	235
	236	sas->migration_cur_gfn = start_gfn + reallen;
	237	g_free(buf);
	238	if (final) {
	239	qemu_put_be64(f, STATTR_FLAG_DONE);
	240	}
	241	qemu_put_be64(f, STATTR_FLAG_EOS);
	242
	243	r = qemu_file_get_error(f);
	244	if (r < 0) {
	245	return r;
	246	}
	247
	248	return ret;
	249	}
	250
	251	static int cmma_save_iterate(QEMUFile f, void opaque)
	252	{
	253	return cmma_save(f, opaque, 0);
	254	}
	255
	256	static int cmma_save_complete(QEMUFile f, void opaque)
	257	{
	258	return cmma_save(f, opaque, 1);
	259	}
	260
	261	static void cmma_save_cleanup(void *opaque)
	262	{
	263	S390StAttribState *sas = S390_STATTRIB(opaque);
	264	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	265	sac->set_migrationmode(sas, 0);
	266	}
	267
	268	static bool cmma_active(void *opaque)
	269	{
	270	S390StAttribState *sas = S390_STATTRIB(opaque);
271	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
272	return sac->get_active(sas);
273	}
274
275	/* QEMU object: */
276
277	static void qemu_s390_stattrib_instance_init(Object *obj)
278	{
279	}
280
281	static int qemu_s390_peek_stattr_stub(S390StAttribState *sa, uint64_t start_gfn,
282	uint32_t count, uint8_t *values)
283	{
284	return 0;
285	}
286	static void qemu_s390_synchronize_stub(S390StAttribState *sa)
287	{
288	}
289	static int qemu_s390_get_stattr_stub(S390StAttribState sa, uint64_t start_gfn,
290	uint32_t count, uint8_t *values)
291	{
292	return 0;
293	}
294	static long long qemu_s390_get_dirtycount_stub(S390StAttribState *sa)
295	{
296	return 0;
297	}
298	static int qemu_s390_set_migrationmode_stub(S390StAttribState *sa, bool value)
299	{
300	return 0;
301	}
302
303	static int qemu_s390_get_active(S390StAttribState *sa)
304	{
305	return sa->migration_enabled;
306	}
307
308	static void qemu_s390_stattrib_class_init(ObjectClass oc, void data)
309	{
310	S390StAttribClass *sa_cl = S390_STATTRIB_CLASS(oc);
3ea6d20e	311	DeviceClass *dc = DEVICE_CLASS(oc);
903fd80b CI	312
	313	sa_cl->synchronize = qemu_s390_synchronize_stub;
	314	sa_cl->get_stattr = qemu_s390_get_stattr_stub;
	315	sa_cl->set_stattr = qemu_s390_peek_stattr_stub;
	316	sa_cl->peek_stattr = qemu_s390_peek_stattr_stub;
	317	sa_cl->set_migrationmode = qemu_s390_set_migrationmode_stub;
	318	sa_cl->get_dirtycount = qemu_s390_get_dirtycount_stub;
	319	sa_cl->get_active = qemu_s390_get_active;
3ea6d20e TH	320
	321	/* Reason: Can only be instantiated one time (internally) */
	322	dc->user_creatable = false;
903fd80b CI	323	}
	324
	325	static const TypeInfo qemu_s390_stattrib_info = {
	326	.name = TYPE_QEMU_S390_STATTRIB,
	327	.parent = TYPE_S390_STATTRIB,
	328	.instance_init = qemu_s390_stattrib_instance_init,
	329	.instance_size = sizeof(QEMUS390StAttribState),
	330	.class_init = qemu_s390_stattrib_class_init,
	331	.class_size = sizeof(S390StAttribClass),
	332	};
	333
	334	/* Generic abstract object: */
	335
	336	static void s390_stattrib_realize(DeviceState dev, Error *errp)
	337	{
	338	bool ambiguous = false;
	339
	340	object_resolve_path_type("", TYPE_S390_STATTRIB, &ambiguous);
	341	if (ambiguous) {
	342	error_setg(errp, "storage_attributes device already exists");
	343	}
	344	}
	345
	346	static void s390_stattrib_class_init(ObjectClass oc, void data)
	347	{
	348	DeviceClass *dc = DEVICE_CLASS(oc);
	349
	350	dc->hotpluggable = false;
	351	set_bit(DEVICE_CATEGORY_MISC, dc->categories);
	352	dc->realize = s390_stattrib_realize;
	353	}
	354
547d6459 VSO	355	static inline bool s390_stattrib_get_migration_enabled(Object *obj,
547d6459 VSO	356	Error **errp)
903fd80b CI	357	{
	358	S390StAttribState *s = S390_STATTRIB(obj);
	359
	360	return s->migration_enabled;
	361	}
	362
	363	static inline void s390_stattrib_set_migration_enabled(Object *obj, bool value,
	364	Error **errp)
	365	{
	366	S390StAttribState *s = S390_STATTRIB(obj);
	367
	368	s->migration_enabled = value;
	369	}
	370
571729a0 DDAG	371	static SaveVMHandlers savevm_s390_stattrib_handlers = {
	372	.save_setup = cmma_save_setup,
	373	.save_live_iterate = cmma_save_iterate,
	374	.save_live_complete_precopy = cmma_save_complete,
	375	.save_live_pending = cmma_save_pending,
	376	.save_cleanup = cmma_save_cleanup,
	377	.load_state = cmma_load,
	378	.is_active = cmma_active,
	379	};
	380
903fd80b CI	381	static void s390_stattrib_instance_init(Object *obj)
	382	{
	383	S390StAttribState *sas = S390_STATTRIB(obj);
571729a0	384
ce62df53	385	register_savevm_live(TYPE_S390_STATTRIB, 0, 0,
571729a0	386	&savevm_s390_stattrib_handlers, sas);
903fd80b CI	387
	388	object_property_add_bool(obj, "migration-enabled",
	389	s390_stattrib_get_migration_enabled,
d2623129	390	s390_stattrib_set_migration_enabled);
903fd80b CI	391	object_property_set_bool(obj, true, "migration-enabled", NULL);
	392	sas->migration_cur_gfn = 0;
	393	}
	394
	395	static const TypeInfo s390_stattrib_info = {
	396	.name = TYPE_S390_STATTRIB,
	397	.parent = TYPE_DEVICE,
	398	.instance_init = s390_stattrib_instance_init,
	399	.instance_size = sizeof(S390StAttribState),
	400	.class_init = s390_stattrib_class_init,
	401	.class_size = sizeof(S390StAttribClass),
	402	.abstract = true,
	403	};
	404
	405	static void s390_stattrib_register_types(void)
	406	{
	407	type_register_static(&s390_stattrib_info);
	408	type_register_static(&qemu_s390_stattrib_info);
	409	}
	410
	411	type_init(s390_stattrib_register_types)