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 "sysemu/char.h"
22 static void get_pointer(Object *obj, Visitor *v, Property *prop,
23 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 = *ptr ? print(*ptr) : g_strdup("");
31 visit_type_str(v, &p, name, errp);
35 static void set_pointer(Object *obj, Visitor *v, Property *prop,
36 int (*parse)(DeviceState *dev, const char *str,
38 const char *name, Error **errp)
40 DeviceState *dev = DEVICE(obj);
41 Error *local_err = NULL;
42 void **ptr = qdev_get_prop_ptr(dev, prop);
47 qdev_prop_set_after_realize(dev, name, errp);
51 visit_type_str(v, &str, name, &local_err);
53 error_propagate(errp, local_err);
61 ret = parse(dev, str, ptr);
62 error_set_from_qdev_prop_error(errp, ret, dev, prop, str);
68 static int parse_drive(DeviceState *dev, const char *str, void **ptr)
76 if (bdrv_attach_dev(bs, dev) < 0) {
83 static void release_drive(Object *obj, const char *name, void *opaque)
85 DeviceState *dev = DEVICE(obj);
86 Property *prop = opaque;
87 BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
90 bdrv_detach_dev(*ptr, dev);
91 blockdev_auto_del(*ptr);
95 static char *print_drive(void *ptr)
97 return g_strdup(bdrv_get_device_name(ptr));
100 static void get_drive(Object *obj, Visitor *v, void *opaque,
101 const char *name, Error **errp)
103 get_pointer(obj, v, opaque, print_drive, name, errp);
106 static void set_drive(Object *obj, Visitor *v, void *opaque,
107 const char *name, Error **errp)
109 set_pointer(obj, v, opaque, parse_drive, name, errp);
112 PropertyInfo qdev_prop_drive = {
114 .legacy_name = "drive",
117 .release = release_drive,
120 /* --- character device --- */
122 static int parse_chr(DeviceState *dev, const char *str, void **ptr)
124 CharDriverState *chr = qemu_chr_find(str);
128 if (qemu_chr_fe_claim(chr) != 0) {
135 static void release_chr(Object *obj, const char *name, void *opaque)
137 DeviceState *dev = DEVICE(obj);
138 Property *prop = opaque;
139 CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
140 CharDriverState *chr = *ptr;
143 qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
144 qemu_chr_fe_release(chr);
149 static char *print_chr(void *ptr)
151 CharDriverState *chr = ptr;
152 const char *val = chr->label ? chr->label : "";
154 return g_strdup(val);
157 static void get_chr(Object *obj, Visitor *v, void *opaque,
158 const char *name, Error **errp)
160 get_pointer(obj, v, opaque, print_chr, name, errp);
163 static void set_chr(Object *obj, Visitor *v, void *opaque,
164 const char *name, Error **errp)
166 set_pointer(obj, v, opaque, parse_chr, name, errp);
169 PropertyInfo qdev_prop_chr = {
171 .legacy_name = "chr",
174 .release = release_chr,
177 /* --- netdev device --- */
179 static int parse_netdev(DeviceState *dev, const char *str, void **ptr)
181 NICPeers *peers_ptr = (NICPeers *)ptr;
182 NICConf *conf = container_of(peers_ptr, NICConf, peers);
183 NetClientState **ncs = peers_ptr->ncs;
184 NetClientState *peers[MAX_QUEUE_NUM];
188 queues = qemu_find_net_clients_except(str, peers,
189 NET_CLIENT_OPTIONS_KIND_NIC,
196 if (queues > MAX_QUEUE_NUM) {
201 for (i = 0; i < queues; i++) {
202 if (peers[i] == NULL) {
207 if (peers[i]->peer) {
218 ncs[i]->queue_index = i;
221 conf->queues = queues;
229 static char *print_netdev(void *ptr)
231 NetClientState *netdev = ptr;
232 const char *val = netdev->name ? netdev->name : "";
234 return g_strdup(val);
237 static void get_netdev(Object *obj, Visitor *v, void *opaque,
238 const char *name, Error **errp)
240 get_pointer(obj, v, opaque, print_netdev, name, errp);
243 static void set_netdev(Object *obj, Visitor *v, void *opaque,
244 const char *name, Error **errp)
246 set_pointer(obj, v, opaque, parse_netdev, name, errp);
249 PropertyInfo qdev_prop_netdev = {
251 .legacy_name = "netdev",
258 static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)
260 NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
264 if (!net_hub_id_for_client(*ptr, &id)) {
265 return snprintf(dest, len, "%d", id);
269 return snprintf(dest, len, "<null>");
272 static void get_vlan(Object *obj, Visitor *v, void *opaque,
273 const char *name, Error **errp)
275 DeviceState *dev = DEVICE(obj);
276 Property *prop = opaque;
277 NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
282 if (!net_hub_id_for_client(*ptr, &hub_id)) {
287 visit_type_int32(v, &id, name, errp);
290 static void set_vlan(Object *obj, Visitor *v, void *opaque,
291 const char *name, Error **errp)
293 DeviceState *dev = DEVICE(obj);
294 Property *prop = opaque;
295 NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
296 NetClientState **ptr = &peers_ptr->ncs[0];
297 Error *local_err = NULL;
299 NetClientState *hubport;
302 qdev_prop_set_after_realize(dev, name, errp);
306 visit_type_int32(v, &id, name, &local_err);
308 error_propagate(errp, local_err);
316 error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name);
320 hubport = net_hub_port_find(id);
322 error_set(errp, QERR_INVALID_PARAMETER_VALUE,
323 name, prop->info->name);
329 PropertyInfo qdev_prop_vlan = {
331 .legacy_name = "vlan",
337 int qdev_prop_set_drive(DeviceState *dev, const char *name,
338 BlockDriverState *value)
341 const char *bdrv_name = value ? bdrv_get_device_name(value) : "";
342 object_property_set_str(OBJECT(dev), bdrv_name,
345 qerror_report_err(errp);
352 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
353 BlockDriverState *value)
355 if (qdev_prop_set_drive(dev, name, value) < 0) {
359 void qdev_prop_set_chr(DeviceState *dev, const char *name,
360 CharDriverState *value)
362 assert(!value || value->label);
363 object_property_set_str(OBJECT(dev),
364 value ? value->label : "", name, &error_abort);
367 void qdev_prop_set_netdev(DeviceState *dev, const char *name,
368 NetClientState *value)
370 assert(!value || value->name);
371 object_property_set_str(OBJECT(dev),
372 value ? value->name : "", name, &error_abort);
375 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
377 qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
379 qdev_prop_set_netdev(dev, "netdev", nd->netdev);
381 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
382 object_property_find(OBJECT(dev), "vectors", NULL)) {
383 qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
385 nd->instantiated = 1;
388 static int qdev_add_one_global(QemuOpts *opts, void *opaque)
392 g = g_malloc0(sizeof(*g));
393 g->driver = qemu_opt_get(opts, "driver");
394 g->property = qemu_opt_get(opts, "property");
395 g->value = qemu_opt_get(opts, "value");
396 qdev_prop_register_global(g);
400 void qemu_add_globals(void)
402 qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0);