[qemu.git] / hw / core / qdev-properties-system.c

/*
 * qdev property parsing and global properties
 * (parts specific for qemu-system-*)
 *
 * This file is based on code from hw/qdev-properties.c from
 * commit 074a86fccd185616469dfcdc0e157f438aebba18,
 * Copyright (c) Gerd Hoffmann <kraxel@redhat.com> and other contributors.
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "net/net.h"
#include "hw/qdev.h"
#include "qapi/qmp/qerror.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "net/hub.h"
#include "qapi/visitor.h"
#include "sysemu/char.h"

static void get_pointer(Object *obj, Visitor *v, Property *prop,
                        const char *(*print)(void *ptr),
                        const char *name, Error **errp)
{
    DeviceState *dev = DEVICE(obj);
    void **ptr = qdev_get_prop_ptr(dev, prop);
    char *p;

    p = (char *) (*ptr ? print(*ptr) : "");
    visit_type_str(v, &p, name, errp);
}

static void set_pointer(Object *obj, Visitor *v, Property *prop,
                        int (*parse)(DeviceState *dev, const char *str,
                                     void **ptr),
                        const char *name, Error **errp)
{
    DeviceState *dev = DEVICE(obj);
    Error *local_err = NULL;
    void **ptr = qdev_get_prop_ptr(dev, prop);
    char *str;
    int ret;

    if (dev->realized) {
        qdev_prop_set_after_realize(dev, name, errp);
        return;
    }

    visit_type_str(v, &str, name, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        return;
    }
    if (!*str) {
        g_free(str);
        *ptr = NULL;
        return;
    }
    ret = parse(dev, str, ptr);
    error_set_from_qdev_prop_error(errp, ret, dev, prop, str);
    g_free(str);
}

/* --- drive --- */

static int parse_drive(DeviceState *dev, const char *str, void **ptr)
{
    BlockDriverState *bs;

    bs = bdrv_find(str);
    if (bs == NULL) {
        return -ENOENT;
    }
    if (bdrv_attach_dev(bs, dev) < 0) {
        return -EEXIST;
    }
    *ptr = bs;
    return 0;
}

static void release_drive(Object *obj, const char *name, void *opaque)
{
    DeviceState *dev = DEVICE(obj);
    Property *prop = opaque;
    BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr) {
        bdrv_detach_dev(*ptr, dev);
        blockdev_auto_del(*ptr);
    }
}

static const char *print_drive(void *ptr)
{
    return bdrv_get_device_name(ptr);
}

static void get_drive(Object *obj, Visitor *v, void *opaque,
                      const char *name, Error **errp)
{
    get_pointer(obj, v, opaque, print_drive, name, errp);
}

static void set_drive(Object *obj, Visitor *v, void *opaque,
                      const char *name, Error **errp)
{
    set_pointer(obj, v, opaque, parse_drive, name, errp);
}

PropertyInfo qdev_prop_drive = {
    .name  = "drive",
    .get   = get_drive,
    .set   = set_drive,
    .release = release_drive,
};

/* --- character device --- */

static int parse_chr(DeviceState *dev, const char *str, void **ptr)
{
    CharDriverState *chr = qemu_chr_find(str);
    if (chr == NULL) {
        return -ENOENT;
    }
    if (qemu_chr_fe_claim(chr) != 0) {
        return -EEXIST;
    }
    *ptr = chr;
    return 0;
}

static void release_chr(Object *obj, const char *name, void *opaque)
{
    DeviceState *dev = DEVICE(obj);
    Property *prop = opaque;
    CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
    CharDriverState *chr = *ptr;

    if (chr) {
        qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
        qemu_chr_fe_release(chr);
    }
}


static const char *print_chr(void *ptr)
{
    CharDriverState *chr = ptr;

    return chr->label ? chr->label : "";
}

static void get_chr(Object *obj, Visitor *v, void *opaque,
                    const char *name, Error **errp)
{
    get_pointer(obj, v, opaque, print_chr, name, errp);
}

static void set_chr(Object *obj, Visitor *v, void *opaque,
                    const char *name, Error **errp)
{
    set_pointer(obj, v, opaque, parse_chr, name, errp);
}

PropertyInfo qdev_prop_chr = {
    .name  = "chr",
    .get   = get_chr,
    .set   = set_chr,
    .release = release_chr,
};

/* --- netdev device --- */

static int parse_netdev(DeviceState *dev, const char *str, void **ptr)
{
    NICPeers *peers_ptr = (NICPeers *)ptr;
    NICConf *conf = container_of(peers_ptr, NICConf, peers);
    NetClientState **ncs = peers_ptr->ncs;
    NetClientState *peers[MAX_QUEUE_NUM];
    int queues, i = 0;
    int ret;

    queues = qemu_find_net_clients_except(str, peers,
                                          NET_CLIENT_OPTIONS_KIND_NIC,
                                          MAX_QUEUE_NUM);
    if (queues == 0) {
        ret = -ENOENT;
        goto err;
    }

    if (queues > MAX_QUEUE_NUM) {
        ret = -E2BIG;
        goto err;
    }

    for (i = 0; i < queues; i++) {
        if (peers[i] == NULL) {
            ret = -ENOENT;
            goto err;
        }

        if (peers[i]->peer) {
            ret = -EEXIST;
            goto err;
        }

        if (ncs[i]) {
            ret = -EINVAL;
            goto err;
        }

        ncs[i] = peers[i];
        ncs[i]->queue_index = i;
    }

    conf->queues = queues;

    return 0;

err:
    return ret;
}

static const char *print_netdev(void *ptr)
{
    NetClientState *netdev = ptr;

    return netdev->name ? netdev->name : "";
}

static void get_netdev(Object *obj, Visitor *v, void *opaque,
                       const char *name, Error **errp)
{
    get_pointer(obj, v, opaque, print_netdev, name, errp);
}

static void set_netdev(Object *obj, Visitor *v, void *opaque,
                       const char *name, Error **errp)
{
    set_pointer(obj, v, opaque, parse_netdev, name, errp);
}

PropertyInfo qdev_prop_netdev = {
    .name  = "netdev",
    .get   = get_netdev,
    .set   = set_netdev,
};

/* --- vlan --- */

static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)
{
    NetClientState **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr) {
        int id;
        if (!net_hub_id_for_client(*ptr, &id)) {
            return snprintf(dest, len, "%d", id);
        }
    }

    return snprintf(dest, len, "<null>");
}

static void get_vlan(Object *obj, Visitor *v, void *opaque,
                     const char *name, Error **errp)
{
    DeviceState *dev = DEVICE(obj);
    Property *prop = opaque;
    NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
    int32_t id = -1;

    if (*ptr) {
        int hub_id;
        if (!net_hub_id_for_client(*ptr, &hub_id)) {
            id = hub_id;
        }
    }

    visit_type_int32(v, &id, name, errp);
}

static void set_vlan(Object *obj, Visitor *v, void *opaque,
                     const char *name, Error **errp)
{
    DeviceState *dev = DEVICE(obj);
    Property *prop = opaque;
    NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
    NetClientState **ptr = &peers_ptr->ncs[0];
    Error *local_err = NULL;
    int32_t id;
    NetClientState *hubport;

    if (dev->realized) {
        qdev_prop_set_after_realize(dev, name, errp);
        return;
    }

    visit_type_int32(v, &id, name, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        return;
    }
    if (id == -1) {
        *ptr = NULL;
        return;
    }
    if (*ptr) {
        error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name);
        return;
    }

    hubport = net_hub_port_find(id);
    if (!hubport) {
        error_set(errp, QERR_INVALID_PARAMETER_VALUE,
                  name, prop->info->name);
        return;
    }
    *ptr = hubport;
}

PropertyInfo qdev_prop_vlan = {
    .name  = "vlan",
    .print = print_vlan,
    .get   = get_vlan,
    .set   = set_vlan,
};

int qdev_prop_set_drive(DeviceState *dev, const char *name,
                        BlockDriverState *value)
{
    Error *errp = NULL;
    const char *bdrv_name = value ? bdrv_get_device_name(value) : "";
    object_property_set_str(OBJECT(dev), bdrv_name,
                            name, &errp);
    if (errp) {
        qerror_report_err(errp);
        error_free(errp);
        return -1;
    }
    return 0;
}

void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
                                BlockDriverState *value)
{
    if (qdev_prop_set_drive(dev, name, value) < 0) {
        exit(1);
    }
}
void qdev_prop_set_chr(DeviceState *dev, const char *name,
                       CharDriverState *value)
{
    Error *errp = NULL;
    assert(!value || value->label);
    object_property_set_str(OBJECT(dev),
                            value ? value->label : "", name, &errp);
    assert_no_error(errp);
}

void qdev_prop_set_netdev(DeviceState *dev, const char *name,
                          NetClientState *value)
{
    Error *errp = NULL;
    assert(!value || value->name);
    object_property_set_str(OBJECT(dev),
                            value ? value->name : "", name, &errp);
    assert_no_error(errp);
}

void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
{
    qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
    if (nd->netdev) {
        qdev_prop_set_netdev(dev, "netdev", nd->netdev);
    }
    if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
        object_property_find(OBJECT(dev), "vectors", NULL)) {
        qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
    }
    nd->instantiated = 1;
}

static int qdev_add_one_global(QemuOpts *opts, void *opaque)
{
    GlobalProperty *g;

    g = g_malloc0(sizeof(*g));
    g->driver   = qemu_opt_get(opts, "driver");
    g->property = qemu_opt_get(opts, "property");
    g->value    = qemu_opt_get(opts, "value");
    qdev_prop_register_global(g);
    return 0;
}

void qemu_add_globals(void)
{
    qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0);
}
Commit	Line	Data
a404b612 EH	1	/*
	2	* qdev property parsing and global properties
	3	* (parts specific for qemu-system-*)
	4	*
	5	* This file is based on code from hw/qdev-properties.c from
	6	* commit 074a86fccd185616469dfcdc0e157f438aebba18,
	7	* Copyright (c) Gerd Hoffmann <kraxel@redhat.com> and other contributors.
	8	*
	9	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	10	* See the COPYING file in the top-level directory.
	11	*/
	12
501a7ce7	13	#include "net/net.h"
83c9f4ca	14	#include "hw/qdev.h"
501a7ce7 AF	15	#include "qapi/qmp/qerror.h"
501a7ce7 AF	16	#include "sysemu/blockdev.h"
0d09e41a	17	#include "hw/block/block.h"
a404b612	18	#include "net/hub.h"
501a7ce7	19	#include "qapi/visitor.h"
dccfcd0e	20	#include "sysemu/char.h"
a404b612 EH	21
	22	static void get_pointer(Object obj, Visitor v, Property *prop,
	23	const char (print)(void *ptr),
	24	const char name, Error *errp)
	25	{
	26	DeviceState *dev = DEVICE(obj);
	27	void **ptr = qdev_get_prop_ptr(dev, prop);
	28	char *p;
	29
	30	p = (char ) (ptr ? print(*ptr) : "");
	31	visit_type_str(v, &p, name, errp);
	32	}
	33
	34	static void set_pointer(Object obj, Visitor v, Property *prop,
	35	int (parse)(DeviceState dev, const char *str,
	36	void **ptr),
	37	const char name, Error *errp)
	38	{
	39	DeviceState *dev = DEVICE(obj);
	40	Error *local_err = NULL;
	41	void **ptr = qdev_get_prop_ptr(dev, prop);
	42	char *str;
	43	int ret;
	44
7983c8a3	45	if (dev->realized) {
b000dfbd	46	qdev_prop_set_after_realize(dev, name, errp);
a404b612 EH	47	return;
	48	}
	49
	50	visit_type_str(v, &str, name, &local_err);
	51	if (local_err) {
	52	error_propagate(errp, local_err);
	53	return;
	54	}
	55	if (!*str) {
	56	g_free(str);
	57	*ptr = NULL;
	58	return;
	59	}
	60	ret = parse(dev, str, ptr);
	61	error_set_from_qdev_prop_error(errp, ret, dev, prop, str);
	62	g_free(str);
	63	}
	64
	65	/* --- drive --- */
	66
	67	static int parse_drive(DeviceState dev, const char str, void **ptr)
	68	{
	69	BlockDriverState *bs;
	70
	71	bs = bdrv_find(str);
	72	if (bs == NULL) {
	73	return -ENOENT;
	74	}
	75	if (bdrv_attach_dev(bs, dev) < 0) {
	76	return -EEXIST;
	77	}
	78	*ptr = bs;
	79	return 0;
	80	}
	81
	82	static void release_drive(Object obj, const char name, void *opaque)
	83	{
	84	DeviceState *dev = DEVICE(obj);
	85	Property *prop = opaque;
	86	BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
	87
	88	if (*ptr) {
	89	bdrv_detach_dev(*ptr, dev);
	90	blockdev_auto_del(*ptr);
	91	}
	92	}
	93
	94	static const char print_drive(void ptr)
	95	{
	96	return bdrv_get_device_name(ptr);
	97	}
	98
	99	static void get_drive(Object obj, Visitor v, void *opaque,
	100	const char name, Error *errp)
	101	{
	102	get_pointer(obj, v, opaque, print_drive, name, errp);
	103	}
	104
	105	static void set_drive(Object obj, Visitor v, void *opaque,
	106	const char name, Error *errp)
	107	{
	108	set_pointer(obj, v, opaque, parse_drive, name, errp);
	109	}
	110
111	PropertyInfo qdev_prop_drive = {
112	.name = "drive",
113	.get = get_drive,
114	.set = set_drive,
115	.release = release_drive,
116	};
117
118	/* --- character device --- */
119
120	static int parse_chr(DeviceState dev, const char str, void **ptr)
121	{
122	CharDriverState *chr = qemu_chr_find(str);
123	if (chr == NULL) {
124	return -ENOENT;
125	}
44c473de	126	if (qemu_chr_fe_claim(chr) != 0) {
a404b612 EH	127	return -EEXIST;
	128	}
	129	*ptr = chr;
a404b612 EH	130	return 0;
	131	}
	132
	133	static void release_chr(Object obj, const char name, void *opaque)
	134	{
	135	DeviceState *dev = DEVICE(obj);
	136	Property *prop = opaque;
	137	CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
85d91e32	138	CharDriverState chr = ptr;
a404b612	139
85d91e32 HG	140	if (chr) {
85d91e32 HG	141	qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
44c473de	142	qemu_chr_fe_release(chr);
a404b612 EH	143	}
	144	}
	145
	146
	147	static const char print_chr(void ptr)
	148	{
	149	CharDriverState *chr = ptr;
	150
	151	return chr->label ? chr->label : "";
	152	}
	153
	154	static void get_chr(Object obj, Visitor v, void *opaque,
	155	const char name, Error *errp)
	156	{
	157	get_pointer(obj, v, opaque, print_chr, name, errp);
	158	}
	159
	160	static void set_chr(Object obj, Visitor v, void *opaque,
	161	const char name, Error *errp)
	162	{
	163	set_pointer(obj, v, opaque, parse_chr, name, errp);
	164	}
	165
	166	PropertyInfo qdev_prop_chr = {
	167	.name = "chr",
	168	.get = get_chr,
	169	.set = set_chr,
	170	.release = release_chr,
	171	};
	172
	173	/* --- netdev device --- */
	174
	175	static int parse_netdev(DeviceState dev, const char str, void **ptr)
	176	{
1ceef9f2 JW	177	NICPeers peers_ptr = (NICPeers )ptr;
	178	NICConf *conf = container_of(peers_ptr, NICConf, peers);
	179	NetClientState **ncs = peers_ptr->ncs;
	180	NetClientState *peers[MAX_QUEUE_NUM];
	181	int queues, i = 0;
	182	int ret;
a404b612	183
1ceef9f2 JW	184	queues = qemu_find_net_clients_except(str, peers,
	185	NET_CLIENT_OPTIONS_KIND_NIC,
	186	MAX_QUEUE_NUM);
	187	if (queues == 0) {
	188	ret = -ENOENT;
	189	goto err;
a404b612	190	}
1ceef9f2 JW	191
	192	if (queues > MAX_QUEUE_NUM) {
	193	ret = -E2BIG;
	194	goto err;
	195	}
	196
	197	for (i = 0; i < queues; i++) {
	198	if (peers[i] == NULL) {
	199	ret = -ENOENT;
	200	goto err;
	201	}
	202
	203	if (peers[i]->peer) {
	204	ret = -EEXIST;
	205	goto err;
	206	}
	207
30c367ed VY	208	if (ncs[i]) {
	209	ret = -EINVAL;
	210	goto err;
	211	}
	212
1ceef9f2 JW	213	ncs[i] = peers[i];
1ceef9f2 JW	214	ncs[i]->queue_index = i;
a404b612	215	}
1ceef9f2 JW	216
	217	conf->queues = queues;
	218
a404b612	219	return 0;
1ceef9f2 JW	220
	221	err:
	222	return ret;
a404b612 EH	223	}
	224
	225	static const char print_netdev(void ptr)
	226	{
	227	NetClientState *netdev = ptr;
	228
	229	return netdev->name ? netdev->name : "";
	230	}
	231
	232	static void get_netdev(Object obj, Visitor v, void *opaque,
	233	const char name, Error *errp)
	234	{
	235	get_pointer(obj, v, opaque, print_netdev, name, errp);
	236	}
	237
	238	static void set_netdev(Object obj, Visitor v, void *opaque,
	239	const char name, Error *errp)
	240	{
	241	set_pointer(obj, v, opaque, parse_netdev, name, errp);
	242	}
	243
	244	PropertyInfo qdev_prop_netdev = {
	245	.name = "netdev",
	246	.get = get_netdev,
	247	.set = set_netdev,
	248	};
	249
	250	/* --- vlan --- */
	251
	252	static int print_vlan(DeviceState dev, Property prop, char *dest, size_t len)
	253	{
	254	NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
	255
	256	if (*ptr) {
	257	int id;
	258	if (!net_hub_id_for_client(*ptr, &id)) {
	259	return snprintf(dest, len, "%d", id);
	260	}
	261	}
	262
	263	return snprintf(dest, len, "<null>");
	264	}
	265
	266	static void get_vlan(Object obj, Visitor v, void *opaque,
	267	const char name, Error *errp)
	268	{
	269	DeviceState *dev = DEVICE(obj);
	270	Property *prop = opaque;
	271	NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
	272	int32_t id = -1;
	273
	274	if (*ptr) {
	275	int hub_id;
	276	if (!net_hub_id_for_client(*ptr, &hub_id)) {
	277	id = hub_id;
	278	}
	279	}
	280
	281	visit_type_int32(v, &id, name, errp);
	282	}
	283
	284	static void set_vlan(Object obj, Visitor v, void *opaque,
	285	const char name, Error *errp)
	286	{
287	DeviceState *dev = DEVICE(obj);
288	Property *prop = opaque;
1ceef9f2 JW	289	NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
1ceef9f2 JW	290	NetClientState **ptr = &peers_ptr->ncs[0];
a404b612 EH	291	Error *local_err = NULL;
	292	int32_t id;
	293	NetClientState *hubport;
	294
7983c8a3	295	if (dev->realized) {
b000dfbd	296	qdev_prop_set_after_realize(dev, name, errp);
a404b612 EH	297	return;
	298	}
	299
	300	visit_type_int32(v, &id, name, &local_err);
	301	if (local_err) {
	302	error_propagate(errp, local_err);
	303	return;
	304	}
	305	if (id == -1) {
	306	*ptr = NULL;
	307	return;
	308	}
30c367ed VY	309	if (*ptr) {
	310	error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name);
	311	return;
	312	}
a404b612 EH	313
	314	hubport = net_hub_port_find(id);
	315	if (!hubport) {
	316	error_set(errp, QERR_INVALID_PARAMETER_VALUE,
	317	name, prop->info->name);
	318	return;
	319	}
	320	*ptr = hubport;
	321	}
	322
	323	PropertyInfo qdev_prop_vlan = {
	324	.name = "vlan",
	325	.print = print_vlan,
	326	.get = get_vlan,
	327	.set = set_vlan,
	328	};
	329
	330	int qdev_prop_set_drive(DeviceState dev, const char name,
	331	BlockDriverState *value)
	332	{
	333	Error *errp = NULL;
	334	const char *bdrv_name = value ? bdrv_get_device_name(value) : "";
	335	object_property_set_str(OBJECT(dev), bdrv_name,
	336	name, &errp);
	337	if (errp) {
	338	qerror_report_err(errp);
	339	error_free(errp);
	340	return -1;
	341	}
	342	return 0;
	343	}
	344
	345	void qdev_prop_set_drive_nofail(DeviceState dev, const char name,
	346	BlockDriverState *value)
	347	{
	348	if (qdev_prop_set_drive(dev, name, value) < 0) {
	349	exit(1);
	350	}
	351	}
	352	void qdev_prop_set_chr(DeviceState dev, const char name,
	353	CharDriverState *value)
	354	{
	355	Error *errp = NULL;
	356	assert(!value \|\| value->label);
	357	object_property_set_str(OBJECT(dev),
	358	value ? value->label : "", name, &errp);
	359	assert_no_error(errp);
	360	}
	361
	362	void qdev_prop_set_netdev(DeviceState dev, const char name,
	363	NetClientState *value)
	364	{
	365	Error *errp = NULL;
	366	assert(!value \|\| value->name);
	367	object_property_set_str(OBJECT(dev),
	368	value ? value->name : "", name, &errp);
	369	assert_no_error(errp);
	370	}
	371
	372	void qdev_set_nic_properties(DeviceState dev, NICInfo nd)
	373	{
	374	qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
	375	if (nd->netdev) {
	376	qdev_prop_set_netdev(dev, "netdev", nd->netdev);
377	}
378	if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
379	object_property_find(OBJECT(dev), "vectors", NULL)) {
380	qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
381	}
382	nd->instantiated = 1;
383	}
384
385	static int qdev_add_one_global(QemuOpts opts, void opaque)
386	{
387	GlobalProperty *g;
388
389	g = g_malloc0(sizeof(*g));
390	g->driver = qemu_opt_get(opts, "driver");
391	g->property = qemu_opt_get(opts, "property");
392	g->value = qemu_opt_get(opts, "value");
393	qdev_prop_register_global(g);
394	return 0;
395	}
396
397	void qemu_add_globals(void)
398	{
399	qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0);
400	}