2 * qdev property parsing and global properties
3 * (parts specific for qemu-system-*)
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.
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.
15 #include "qapi/qmp/qerror.h"
16 #include "sysemu/blockdev.h"
17 #include "hw/block/block.h"
19 #include "qapi/visitor.h"
20 #include "char/char.h"
22 static void get_pointer(Object *obj, Visitor *v, Property *prop,
23 const char *(*print)(void *ptr),
24 const char *name, Error **errp)
26 DeviceState *dev = DEVICE(obj);
27 void **ptr = qdev_get_prop_ptr(dev, prop);
30 p = (char *) (*ptr ? print(*ptr) : "");
31 visit_type_str(v, &p, name, errp);
34 static void set_pointer(Object *obj, Visitor *v, Property *prop,
35 int (*parse)(DeviceState *dev, const char *str,
37 const char *name, Error **errp)
39 DeviceState *dev = DEVICE(obj);
40 Error *local_err = NULL;
41 void **ptr = qdev_get_prop_ptr(dev, prop);
46 qdev_prop_set_after_realize(dev, name, errp);
50 visit_type_str(v, &str, name, &local_err);
52 error_propagate(errp, local_err);
60 ret = parse(dev, str, ptr);
61 error_set_from_qdev_prop_error(errp, ret, dev, prop, str);
67 static int parse_drive(DeviceState *dev, const char *str, void **ptr)
75 if (bdrv_attach_dev(bs, dev) < 0) {
82 static void release_drive(Object *obj, const char *name, void *opaque)
84 DeviceState *dev = DEVICE(obj);
85 Property *prop = opaque;
86 BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
89 bdrv_detach_dev(*ptr, dev);
90 blockdev_auto_del(*ptr);
94 static const char *print_drive(void *ptr)
96 return bdrv_get_device_name(ptr);
99 static void get_drive(Object *obj, Visitor *v, void *opaque,
100 const char *name, Error **errp)
102 get_pointer(obj, v, opaque, print_drive, name, errp);
105 static void set_drive(Object *obj, Visitor *v, void *opaque,
106 const char *name, Error **errp)
108 set_pointer(obj, v, opaque, parse_drive, name, errp);
111 PropertyInfo qdev_prop_drive = {
115 .release = release_drive,
118 /* --- character device --- */
120 static int parse_chr(DeviceState *dev, const char *str, void **ptr)
122 CharDriverState *chr = qemu_chr_find(str);
126 if (qemu_chr_fe_claim(chr) != 0) {
133 static void release_chr(Object *obj, const char *name, void *opaque)
135 DeviceState *dev = DEVICE(obj);
136 Property *prop = opaque;
137 CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
138 CharDriverState *chr = *ptr;
141 qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
142 qemu_chr_fe_release(chr);
147 static const char *print_chr(void *ptr)
149 CharDriverState *chr = ptr;
151 return chr->label ? chr->label : "";
154 static void get_chr(Object *obj, Visitor *v, void *opaque,
155 const char *name, Error **errp)
157 get_pointer(obj, v, opaque, print_chr, name, errp);
160 static void set_chr(Object *obj, Visitor *v, void *opaque,
161 const char *name, Error **errp)
163 set_pointer(obj, v, opaque, parse_chr, name, errp);
166 PropertyInfo qdev_prop_chr = {
170 .release = release_chr,
173 /* --- netdev device --- */
175 static int parse_netdev(DeviceState *dev, const char *str, void **ptr)
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];
184 queues = qemu_find_net_clients_except(str, peers,
185 NET_CLIENT_OPTIONS_KIND_NIC,
192 if (queues > MAX_QUEUE_NUM) {
197 for (i = 0; i < queues; i++) {
198 if (peers[i] == NULL) {
203 if (peers[i]->peer) {
209 ncs[i]->queue_index = i;
212 conf->queues = queues;
220 static const char *print_netdev(void *ptr)
222 NetClientState *netdev = ptr;
224 return netdev->name ? netdev->name : "";
227 static void get_netdev(Object *obj, Visitor *v, void *opaque,
228 const char *name, Error **errp)
230 get_pointer(obj, v, opaque, print_netdev, name, errp);
233 static void set_netdev(Object *obj, Visitor *v, void *opaque,
234 const char *name, Error **errp)
236 set_pointer(obj, v, opaque, parse_netdev, name, errp);
239 PropertyInfo qdev_prop_netdev = {
247 static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)
249 NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
253 if (!net_hub_id_for_client(*ptr, &id)) {
254 return snprintf(dest, len, "%d", id);
258 return snprintf(dest, len, "<null>");
261 static void get_vlan(Object *obj, Visitor *v, void *opaque,
262 const char *name, Error **errp)
264 DeviceState *dev = DEVICE(obj);
265 Property *prop = opaque;
266 NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
271 if (!net_hub_id_for_client(*ptr, &hub_id)) {
276 visit_type_int32(v, &id, name, errp);
279 static void set_vlan(Object *obj, Visitor *v, void *opaque,
280 const char *name, Error **errp)
282 DeviceState *dev = DEVICE(obj);
283 Property *prop = opaque;
284 NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
285 NetClientState **ptr = &peers_ptr->ncs[0];
286 Error *local_err = NULL;
288 NetClientState *hubport;
291 qdev_prop_set_after_realize(dev, name, errp);
295 visit_type_int32(v, &id, name, &local_err);
297 error_propagate(errp, local_err);
305 hubport = net_hub_port_find(id);
307 error_set(errp, QERR_INVALID_PARAMETER_VALUE,
308 name, prop->info->name);
314 PropertyInfo qdev_prop_vlan = {
321 int qdev_prop_set_drive(DeviceState *dev, const char *name,
322 BlockDriverState *value)
325 const char *bdrv_name = value ? bdrv_get_device_name(value) : "";
326 object_property_set_str(OBJECT(dev), bdrv_name,
329 qerror_report_err(errp);
336 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
337 BlockDriverState *value)
339 if (qdev_prop_set_drive(dev, name, value) < 0) {
343 void qdev_prop_set_chr(DeviceState *dev, const char *name,
344 CharDriverState *value)
347 assert(!value || value->label);
348 object_property_set_str(OBJECT(dev),
349 value ? value->label : "", name, &errp);
350 assert_no_error(errp);
353 void qdev_prop_set_netdev(DeviceState *dev, const char *name,
354 NetClientState *value)
357 assert(!value || value->name);
358 object_property_set_str(OBJECT(dev),
359 value ? value->name : "", name, &errp);
360 assert_no_error(errp);
363 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
365 qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
367 qdev_prop_set_netdev(dev, "netdev", nd->netdev);
369 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
370 object_property_find(OBJECT(dev), "vectors", NULL)) {
371 qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
373 nd->instantiated = 1;
376 static int qdev_add_one_global(QemuOpts *opts, void *opaque)
380 g = g_malloc0(sizeof(*g));
381 g->driver = qemu_opt_get(opts, "driver");
382 g->property = qemu_opt_get(opts, "property");
383 g->value = qemu_opt_get(opts, "value");
384 qdev_prop_register_global(g);
388 void qemu_add_globals(void)
390 qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0);