[qemu.git] / hw / 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-common.h"
#include "net/hub.h"
#include "qapi/visitor.h"
#include "char/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 (chr->avail_connections < 1) {
        return -EEXIST;
    }
    *ptr = chr;
    --chr->avail_connections;
    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);
        ++chr->avail_connections;
    }
}


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;
        }

        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;
    }

    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"
a404b612 EH	17	#include "hw/block-common.h"
a404b612 EH	18	#include "net/hub.h"
501a7ce7 AF	19	#include "qapi/visitor.h"
501a7ce7 AF	20	#include "char/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	}
126	if (chr->avail_connections < 1) {
127	return -EEXIST;
128	}
129	*ptr = chr;
130	--chr->avail_connections;
131	return 0;
132	}
133
134	static void release_chr(Object obj, const char name, void *opaque)
135	{
136	DeviceState *dev = DEVICE(obj);
137	Property *prop = opaque;
138	CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
85d91e32	139	CharDriverState chr = ptr;
a404b612	140
85d91e32 HG	141	if (chr) {
	142	qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
	143	++chr->avail_connections;
a404b612 EH	144	}
	145	}
	146
	147
	148	static const char print_chr(void ptr)
	149	{
	150	CharDriverState *chr = ptr;
	151
	152	return chr->label ? chr->label : "";
	153	}
	154
	155	static void get_chr(Object obj, Visitor v, void *opaque,
	156	const char name, Error *errp)
	157	{
	158	get_pointer(obj, v, opaque, print_chr, name, errp);
	159	}
	160
	161	static void set_chr(Object obj, Visitor v, void *opaque,
	162	const char name, Error *errp)
	163	{
	164	set_pointer(obj, v, opaque, parse_chr, name, errp);
	165	}
	166
	167	PropertyInfo qdev_prop_chr = {
	168	.name = "chr",
	169	.get = get_chr,
	170	.set = set_chr,
	171	.release = release_chr,
	172	};
	173
	174	/* --- netdev device --- */
	175
	176	static int parse_netdev(DeviceState dev, const char str, void **ptr)
	177	{
1ceef9f2 JW	178	NICPeers peers_ptr = (NICPeers )ptr;
	179	NICConf *conf = container_of(peers_ptr, NICConf, peers);
	180	NetClientState **ncs = peers_ptr->ncs;
	181	NetClientState *peers[MAX_QUEUE_NUM];
	182	int queues, i = 0;
	183	int ret;
a404b612	184
1ceef9f2 JW	185	queues = qemu_find_net_clients_except(str, peers,
	186	NET_CLIENT_OPTIONS_KIND_NIC,
	187	MAX_QUEUE_NUM);
	188	if (queues == 0) {
	189	ret = -ENOENT;
	190	goto err;
a404b612	191	}
1ceef9f2 JW	192
	193	if (queues > MAX_QUEUE_NUM) {
	194	ret = -E2BIG;
	195	goto err;
	196	}
	197
	198	for (i = 0; i < queues; i++) {
	199	if (peers[i] == NULL) {
	200	ret = -ENOENT;
	201	goto err;
	202	}
	203
	204	if (peers[i]->peer) {
	205	ret = -EEXIST;
	206	goto err;
	207	}
	208
	209	ncs[i] = peers[i];
	210	ncs[i]->queue_index = i;
a404b612	211	}
1ceef9f2 JW	212
	213	conf->queues = queues;
	214
a404b612	215	return 0;
1ceef9f2 JW	216
	217	err:
	218	return ret;
a404b612 EH	219	}
	220
	221	static const char print_netdev(void ptr)
	222	{
	223	NetClientState *netdev = ptr;
	224
	225	return netdev->name ? netdev->name : "";
	226	}
	227
	228	static void get_netdev(Object obj, Visitor v, void *opaque,
	229	const char name, Error *errp)
	230	{
	231	get_pointer(obj, v, opaque, print_netdev, name, errp);
	232	}
	233
	234	static void set_netdev(Object obj, Visitor v, void *opaque,
	235	const char name, Error *errp)
	236	{
	237	set_pointer(obj, v, opaque, parse_netdev, name, errp);
	238	}
	239
	240	PropertyInfo qdev_prop_netdev = {
	241	.name = "netdev",
	242	.get = get_netdev,
	243	.set = set_netdev,
	244	};
	245
	246	/* --- vlan --- */
	247
	248	static int print_vlan(DeviceState dev, Property prop, char *dest, size_t len)
	249	{
	250	NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
	251
	252	if (*ptr) {
	253	int id;
	254	if (!net_hub_id_for_client(*ptr, &id)) {
	255	return snprintf(dest, len, "%d", id);
	256	}
	257	}
	258
	259	return snprintf(dest, len, "<null>");
	260	}
	261
	262	static void get_vlan(Object obj, Visitor v, void *opaque,
	263	const char name, Error *errp)
	264	{
	265	DeviceState *dev = DEVICE(obj);
	266	Property *prop = opaque;
	267	NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
	268	int32_t id = -1;
	269
	270	if (*ptr) {
	271	int hub_id;
	272	if (!net_hub_id_for_client(*ptr, &hub_id)) {
	273	id = hub_id;
	274	}
	275	}
	276
	277	visit_type_int32(v, &id, name, errp);
	278	}
	279
	280	static void set_vlan(Object obj, Visitor v, void *opaque,
	281	const char name, Error *errp)
	282	{
283	DeviceState *dev = DEVICE(obj);
284	Property *prop = opaque;
1ceef9f2 JW	285	NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
1ceef9f2 JW	286	NetClientState **ptr = &peers_ptr->ncs[0];
a404b612 EH	287	Error *local_err = NULL;
	288	int32_t id;
	289	NetClientState *hubport;
	290
7983c8a3	291	if (dev->realized) {
b000dfbd	292	qdev_prop_set_after_realize(dev, name, errp);
a404b612 EH	293	return;
	294	}
	295
	296	visit_type_int32(v, &id, name, &local_err);
	297	if (local_err) {
	298	error_propagate(errp, local_err);
	299	return;
	300	}
	301	if (id == -1) {
	302	*ptr = NULL;
	303	return;
	304	}
	305
	306	hubport = net_hub_port_find(id);
	307	if (!hubport) {
	308	error_set(errp, QERR_INVALID_PARAMETER_VALUE,
	309	name, prop->info->name);
	310	return;
	311	}
	312	*ptr = hubport;
	313	}
	314
	315	PropertyInfo qdev_prop_vlan = {
	316	.name = "vlan",
	317	.print = print_vlan,
	318	.get = get_vlan,
	319	.set = set_vlan,
	320	};
	321
	322	int qdev_prop_set_drive(DeviceState dev, const char name,
	323	BlockDriverState *value)
	324	{
	325	Error *errp = NULL;
	326	const char *bdrv_name = value ? bdrv_get_device_name(value) : "";
	327	object_property_set_str(OBJECT(dev), bdrv_name,
	328	name, &errp);
	329	if (errp) {
	330	qerror_report_err(errp);
	331	error_free(errp);
	332	return -1;
	333	}
	334	return 0;
	335	}
	336
	337	void qdev_prop_set_drive_nofail(DeviceState dev, const char name,
	338	BlockDriverState *value)
	339	{
	340	if (qdev_prop_set_drive(dev, name, value) < 0) {
	341	exit(1);
	342	}
	343	}
	344	void qdev_prop_set_chr(DeviceState dev, const char name,
	345	CharDriverState *value)
	346	{
	347	Error *errp = NULL;
	348	assert(!value \|\| value->label);
	349	object_property_set_str(OBJECT(dev),
	350	value ? value->label : "", name, &errp);
	351	assert_no_error(errp);
	352	}
	353
	354	void qdev_prop_set_netdev(DeviceState dev, const char name,
	355	NetClientState *value)
	356	{
357	Error *errp = NULL;
358	assert(!value \|\| value->name);
359	object_property_set_str(OBJECT(dev),
360	value ? value->name : "", name, &errp);
361	assert_no_error(errp);
362	}
363
364	void qdev_set_nic_properties(DeviceState dev, NICInfo nd)
365	{
366	qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
367	if (nd->netdev) {
368	qdev_prop_set_netdev(dev, "netdev", nd->netdev);
369	}
370	if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
371	object_property_find(OBJECT(dev), "vectors", NULL)) {
372	qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
373	}
374	nd->instantiated = 1;
375	}
376
377	static int qdev_add_one_global(QemuOpts opts, void opaque)
378	{
379	GlobalProperty *g;
380
381	g = g_malloc0(sizeof(*g));
382	g->driver = qemu_opt_get(opts, "driver");
383	g->property = qemu_opt_get(opts, "property");
384	g->value = qemu_opt_get(opts, "value");
385	qdev_prop_register_global(g);
386	return 0;
387	}
388
389	void qemu_add_globals(void)
390	{
391	qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0);
392	}