root / hw / core / qdev-properties-system.c @ 49ab747f
History | View | Annotate | Download (9.4 kB)
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 |
|
13 |
#include "net/net.h" |
14 |
#include "hw/qdev.h" |
15 |
#include "qapi/qmp/qerror.h" |
16 |
#include "sysemu/blockdev.h" |
17 |
#include "hw/block/block.h" |
18 |
#include "net/hub.h" |
19 |
#include "qapi/visitor.h" |
20 |
#include "char/char.h" |
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 |
|
45 |
if (dev->realized) {
|
46 |
qdev_prop_set_after_realize(dev, name, errp); |
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 (qemu_chr_fe_claim(chr) != 0) { |
127 |
return -EEXIST;
|
128 |
} |
129 |
*ptr = chr; |
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); |
138 |
CharDriverState *chr = *ptr; |
139 |
|
140 |
if (chr) {
|
141 |
qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL); |
142 |
qemu_chr_fe_release(chr); |
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 |
{ |
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;
|
183 |
|
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;
|
190 |
} |
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 |
|
208 |
ncs[i] = peers[i]; |
209 |
ncs[i]->queue_index = i; |
210 |
} |
211 |
|
212 |
conf->queues = queues; |
213 |
|
214 |
return 0; |
215 |
|
216 |
err:
|
217 |
return ret;
|
218 |
} |
219 |
|
220 |
static const char *print_netdev(void *ptr) |
221 |
{ |
222 |
NetClientState *netdev = ptr; |
223 |
|
224 |
return netdev->name ? netdev->name : ""; |
225 |
} |
226 |
|
227 |
static void get_netdev(Object *obj, Visitor *v, void *opaque, |
228 |
const char *name, Error **errp) |
229 |
{ |
230 |
get_pointer(obj, v, opaque, print_netdev, name, errp); |
231 |
} |
232 |
|
233 |
static void set_netdev(Object *obj, Visitor *v, void *opaque, |
234 |
const char *name, Error **errp) |
235 |
{ |
236 |
set_pointer(obj, v, opaque, parse_netdev, name, errp); |
237 |
} |
238 |
|
239 |
PropertyInfo qdev_prop_netdev = { |
240 |
.name = "netdev",
|
241 |
.get = get_netdev, |
242 |
.set = set_netdev, |
243 |
}; |
244 |
|
245 |
/* --- vlan --- */
|
246 |
|
247 |
static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len) |
248 |
{ |
249 |
NetClientState **ptr = qdev_get_prop_ptr(dev, prop); |
250 |
|
251 |
if (*ptr) {
|
252 |
int id;
|
253 |
if (!net_hub_id_for_client(*ptr, &id)) {
|
254 |
return snprintf(dest, len, "%d", id); |
255 |
} |
256 |
} |
257 |
|
258 |
return snprintf(dest, len, "<null>"); |
259 |
} |
260 |
|
261 |
static void get_vlan(Object *obj, Visitor *v, void *opaque, |
262 |
const char *name, Error **errp) |
263 |
{ |
264 |
DeviceState *dev = DEVICE(obj); |
265 |
Property *prop = opaque; |
266 |
NetClientState **ptr = qdev_get_prop_ptr(dev, prop); |
267 |
int32_t id = -1;
|
268 |
|
269 |
if (*ptr) {
|
270 |
int hub_id;
|
271 |
if (!net_hub_id_for_client(*ptr, &hub_id)) {
|
272 |
id = hub_id; |
273 |
} |
274 |
} |
275 |
|
276 |
visit_type_int32(v, &id, name, errp); |
277 |
} |
278 |
|
279 |
static void set_vlan(Object *obj, Visitor *v, void *opaque, |
280 |
const char *name, Error **errp) |
281 |
{ |
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;
|
287 |
int32_t id; |
288 |
NetClientState *hubport; |
289 |
|
290 |
if (dev->realized) {
|
291 |
qdev_prop_set_after_realize(dev, name, errp); |
292 |
return;
|
293 |
} |
294 |
|
295 |
visit_type_int32(v, &id, name, &local_err); |
296 |
if (local_err) {
|
297 |
error_propagate(errp, local_err); |
298 |
return;
|
299 |
} |
300 |
if (id == -1) { |
301 |
*ptr = NULL;
|
302 |
return;
|
303 |
} |
304 |
|
305 |
hubport = net_hub_port_find(id); |
306 |
if (!hubport) {
|
307 |
error_set(errp, QERR_INVALID_PARAMETER_VALUE, |
308 |
name, prop->info->name); |
309 |
return;
|
310 |
} |
311 |
*ptr = hubport; |
312 |
} |
313 |
|
314 |
PropertyInfo qdev_prop_vlan = { |
315 |
.name = "vlan",
|
316 |
.print = print_vlan, |
317 |
.get = get_vlan, |
318 |
.set = set_vlan, |
319 |
}; |
320 |
|
321 |
int qdev_prop_set_drive(DeviceState *dev, const char *name, |
322 |
BlockDriverState *value) |
323 |
{ |
324 |
Error *errp = NULL;
|
325 |
const char *bdrv_name = value ? bdrv_get_device_name(value) : ""; |
326 |
object_property_set_str(OBJECT(dev), bdrv_name, |
327 |
name, &errp); |
328 |
if (errp) {
|
329 |
qerror_report_err(errp); |
330 |
error_free(errp); |
331 |
return -1; |
332 |
} |
333 |
return 0; |
334 |
} |
335 |
|
336 |
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, |
337 |
BlockDriverState *value) |
338 |
{ |
339 |
if (qdev_prop_set_drive(dev, name, value) < 0) { |
340 |
exit(1);
|
341 |
} |
342 |
} |
343 |
void qdev_prop_set_chr(DeviceState *dev, const char *name, |
344 |
CharDriverState *value) |
345 |
{ |
346 |
Error *errp = NULL;
|
347 |
assert(!value || value->label); |
348 |
object_property_set_str(OBJECT(dev), |
349 |
value ? value->label : "", name, &errp);
|
350 |
assert_no_error(errp); |
351 |
} |
352 |
|
353 |
void qdev_prop_set_netdev(DeviceState *dev, const char *name, |
354 |
NetClientState *value) |
355 |
{ |
356 |
Error *errp = NULL;
|
357 |
assert(!value || value->name); |
358 |
object_property_set_str(OBJECT(dev), |
359 |
value ? value->name : "", name, &errp);
|
360 |
assert_no_error(errp); |
361 |
} |
362 |
|
363 |
void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
|
364 |
{ |
365 |
qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
|
366 |
if (nd->netdev) {
|
367 |
qdev_prop_set_netdev(dev, "netdev", nd->netdev);
|
368 |
} |
369 |
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
|
370 |
object_property_find(OBJECT(dev), "vectors", NULL)) { |
371 |
qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
|
372 |
} |
373 |
nd->instantiated = 1;
|
374 |
} |
375 |
|
376 |
static int qdev_add_one_global(QemuOpts *opts, void *opaque) |
377 |
{ |
378 |
GlobalProperty *g; |
379 |
|
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); |
385 |
return 0; |
386 |
} |
387 |
|
388 |
void qemu_add_globals(void) |
389 |
{ |
390 |
qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0); |
391 |
} |