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

/*
 * s390 storage attributes device
 *
 * Copyright 2016 IBM Corp.
 * Author(s): Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
 *
 * 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 "migration/qemu-file.h"
#include "migration/register.h"
#include "hw/qdev-properties.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_realize(DEVICE(obj), NULL, &error_fatal);
}

/* 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_state_pending(void *opaque, uint64_t *must_precopy,
                               uint64_t *can_postcopy)
{
    S390StAttribState *sas = S390_STATTRIB(opaque);
    S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
    long long res = sac->get_dirtycount(sas);

    if (res >= 0) {
        *must_precopy += 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 : migration_rate_exceeded(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 SaveVMHandlers savevm_s390_stattrib_handlers = {
    .save_setup = cmma_save_setup,
    .save_live_iterate = cmma_save_iterate,
    .save_live_complete_precopy = cmma_save_complete,
    .state_pending_exact = cmma_state_pending,
    .state_pending_estimate = cmma_state_pending,
    .save_cleanup = cmma_save_cleanup,
    .load_state = cmma_load,
    .is_active = cmma_active,
};

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");
        return;
    }

    register_savevm_live(TYPE_S390_STATTRIB, 0, 0,
                         &savevm_s390_stattrib_handlers, dev);
}

static Property s390_stattrib_props[] = {
    DEFINE_PROP_BOOL("migration-enabled", S390StAttribState, migration_enabled, true),
    DEFINE_PROP_END_OF_LIST(),
};

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;
    device_class_set_props(dc, s390_stattrib_props);
}

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

    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 <imbrenda@linux.vnet.ibm.com>
	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"
903fd80b CI	14	#include "migration/qemu-file.h"
903fd80b CI	15	#include "migration/register.h"
bc1bf2ae	16	#include "hw/qdev-properties.h"
903fd80b CI	17	#include "hw/s390x/storage-attributes.h"
903fd80b CI	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);
903fd80b CI	52
ce189ab2	53	qdev_realize(DEVICE(obj), NULL, &error_fatal);
903fd80b CI	54	}
903fd80b CI	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
24beea4e JQ	186	static void cmma_state_pending(void opaque, uint64_t must_precopy,
24beea4e JQ	187	uint64_t *can_postcopy)
903fd80b CI	188	{
	189	S390StAttribState *sas = S390_STATTRIB(opaque);
	190	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	191	long long res = sac->get_dirtycount(sas);
	192
	193	if (res >= 0) {
24beea4e	194	*must_precopy += res;
903fd80b CI	195	}
	196	}
	197
	198	static int cmma_save(QEMUFile f, void opaque, int final)
	199	{
	200	S390StAttribState *sas = S390_STATTRIB(opaque);
	201	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	202	uint8_t *buf;
	203	int r, cx, reallen = 0, ret = 0;
17f45666	204	uint32_t buflen = CMMA_BLOCK_SIZE;
903fd80b CI	205	uint64_t start_gfn = sas->migration_cur_gfn;
	206
	207	buf = g_try_malloc(buflen);
	208	if (!buf) {
	209	error_report("Could not allocate memory to save storage attributes");
	210	return -ENOMEM;
	211	}
	212
e1fde0e0	213	while (final ? 1 : migration_rate_exceeded(f) == 0) {
903fd80b CI	214	reallen = sac->get_stattr(sas, &start_gfn, buflen, buf);
	215	if (reallen < 0) {
	216	g_free(buf);
	217	return reallen;
	218	}
	219
	220	ret = 1;
	221	if (!reallen) {
	222	break;
	223	}
	224	qemu_put_be64(f, (start_gfn << TARGET_PAGE_BITS) \| STATTR_FLAG_MORE);
	225	qemu_put_be64(f, reallen);
	226	for (cx = 0; cx < reallen; cx++) {
	227	qemu_put_byte(f, buf[cx]);
	228	}
	229	if (!sac->get_dirtycount(sas)) {
	230	break;
	231	}
	232	}
	233
	234	sas->migration_cur_gfn = start_gfn + reallen;
	235	g_free(buf);
	236	if (final) {
	237	qemu_put_be64(f, STATTR_FLAG_DONE);
	238	}
	239	qemu_put_be64(f, STATTR_FLAG_EOS);
	240
	241	r = qemu_file_get_error(f);
	242	if (r < 0) {
	243	return r;
	244	}
	245
	246	return ret;
	247	}
	248
	249	static int cmma_save_iterate(QEMUFile f, void opaque)
	250	{
	251	return cmma_save(f, opaque, 0);
	252	}
	253
	254	static int cmma_save_complete(QEMUFile f, void opaque)
	255	{
	256	return cmma_save(f, opaque, 1);
	257	}
	258
	259	static void cmma_save_cleanup(void *opaque)
	260	{
	261	S390StAttribState *sas = S390_STATTRIB(opaque);
	262	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	263	sac->set_migrationmode(sas, 0);
	264	}
	265
	266	static bool cmma_active(void *opaque)
	267	{
	268	S390StAttribState *sas = S390_STATTRIB(opaque);
	269	S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
	270	return sac->get_active(sas);
	271	}
	272
	273	/* QEMU object: */
	274
	275	static void qemu_s390_stattrib_instance_init(Object *obj)
	276	{
	277	}
278
279	static int qemu_s390_peek_stattr_stub(S390StAttribState *sa, uint64_t start_gfn,
280	uint32_t count, uint8_t *values)
281	{
282	return 0;
283	}
284	static void qemu_s390_synchronize_stub(S390StAttribState *sa)
285	{
286	}
287	static int qemu_s390_get_stattr_stub(S390StAttribState sa, uint64_t start_gfn,
288	uint32_t count, uint8_t *values)
289	{
290	return 0;
291	}
292	static long long qemu_s390_get_dirtycount_stub(S390StAttribState *sa)
293	{
294	return 0;
295	}
296	static int qemu_s390_set_migrationmode_stub(S390StAttribState *sa, bool value)
297	{
298	return 0;
299	}
300
301	static int qemu_s390_get_active(S390StAttribState *sa)
302	{
303	return sa->migration_enabled;
304	}
305
306	static void qemu_s390_stattrib_class_init(ObjectClass oc, void data)
307	{
308	S390StAttribClass *sa_cl = S390_STATTRIB_CLASS(oc);
3ea6d20e	309	DeviceClass *dc = DEVICE_CLASS(oc);
903fd80b CI	310
	311	sa_cl->synchronize = qemu_s390_synchronize_stub;
	312	sa_cl->get_stattr = qemu_s390_get_stattr_stub;
	313	sa_cl->set_stattr = qemu_s390_peek_stattr_stub;
	314	sa_cl->peek_stattr = qemu_s390_peek_stattr_stub;
	315	sa_cl->set_migrationmode = qemu_s390_set_migrationmode_stub;
	316	sa_cl->get_dirtycount = qemu_s390_get_dirtycount_stub;
	317	sa_cl->get_active = qemu_s390_get_active;
3ea6d20e TH	318
	319	/* Reason: Can only be instantiated one time (internally) */
	320	dc->user_creatable = false;
903fd80b CI	321	}
	322
	323	static const TypeInfo qemu_s390_stattrib_info = {
	324	.name = TYPE_QEMU_S390_STATTRIB,
	325	.parent = TYPE_S390_STATTRIB,
	326	.instance_init = qemu_s390_stattrib_instance_init,
	327	.instance_size = sizeof(QEMUS390StAttribState),
	328	.class_init = qemu_s390_stattrib_class_init,
	329	.class_size = sizeof(S390StAttribClass),
	330	};
	331
	332	/* Generic abstract object: */
	333
83268570 TH	334	static SaveVMHandlers savevm_s390_stattrib_handlers = {
	335	.save_setup = cmma_save_setup,
	336	.save_live_iterate = cmma_save_iterate,
	337	.save_live_complete_precopy = cmma_save_complete,
	338	.state_pending_exact = cmma_state_pending,
	339	.state_pending_estimate = cmma_state_pending,
	340	.save_cleanup = cmma_save_cleanup,
	341	.load_state = cmma_load,
	342	.is_active = cmma_active,
	343	};
	344
903fd80b CI	345	static void s390_stattrib_realize(DeviceState dev, Error *errp)
	346	{
	347	bool ambiguous = false;
	348
	349	object_resolve_path_type("", TYPE_S390_STATTRIB, &ambiguous);
	350	if (ambiguous) {
	351	error_setg(errp, "storage_attributes device already exists");
83268570	352	return;
903fd80b	353	}
83268570 TH	354
	355	register_savevm_live(TYPE_S390_STATTRIB, 0, 0,
	356	&savevm_s390_stattrib_handlers, dev);
903fd80b CI	357	}
903fd80b CI	358
bc1bf2ae TH	359	static Property s390_stattrib_props[] = {
	360	DEFINE_PROP_BOOL("migration-enabled", S390StAttribState, migration_enabled, true),
	361	DEFINE_PROP_END_OF_LIST(),
	362	};
	363
903fd80b CI	364	static void s390_stattrib_class_init(ObjectClass oc, void data)
	365	{
	366	DeviceClass *dc = DEVICE_CLASS(oc);
	367
	368	dc->hotpluggable = false;
	369	set_bit(DEVICE_CATEGORY_MISC, dc->categories);
	370	dc->realize = s390_stattrib_realize;
bc1bf2ae	371	device_class_set_props(dc, s390_stattrib_props);
903fd80b CI	372	}
	373
	374	static void s390_stattrib_instance_init(Object *obj)
	375	{
	376	S390StAttribState *sas = S390_STATTRIB(obj);
571729a0	377
903fd80b CI	378	sas->migration_cur_gfn = 0;
	379	}
	380
	381	static const TypeInfo s390_stattrib_info = {
	382	.name = TYPE_S390_STATTRIB,
	383	.parent = TYPE_DEVICE,
	384	.instance_init = s390_stattrib_instance_init,
	385	.instance_size = sizeof(S390StAttribState),
	386	.class_init = s390_stattrib_class_init,
	387	.class_size = sizeof(S390StAttribClass),
	388	.abstract = true,
	389	};
	390
	391	static void s390_stattrib_register_types(void)
	392	{
	393	type_register_static(&s390_stattrib_info);
	394	type_register_static(&qemu_s390_stattrib_info);
	395	}
	396
	397	type_init(s390_stattrib_register_types)