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aae9460e PB |
1 | /* |
2 | * Dynamic device configuration and creation. | |
3 | * | |
4 | * Copyright (c) 2009 CodeSourcery | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | /* The theory here is that it should be possible to create a machine without | |
22 | knowledge of specific devices. Historically board init routines have | |
23 | passed a bunch of arguments to each device, requiring the board know | |
24 | exactly which device it is dealing with. This file provides an abstract | |
25 | API for device configuration and initialization. Devices will generally | |
26 | inherit from a particular bus (e.g. PCI or I2C) rather than | |
27 | this API directly. */ | |
28 | ||
9d07d757 | 29 | #include "net.h" |
aae9460e PB |
30 | #include "qdev.h" |
31 | #include "sysemu.h" | |
cae4956e | 32 | #include "monitor.h" |
aae9460e PB |
33 | |
34 | struct DeviceProperty { | |
35 | const char *name; | |
1431b6a1 | 36 | DevicePropType type; |
aae9460e | 37 | union { |
89a740e1 | 38 | uint64_t i; |
aae9460e PB |
39 | void *ptr; |
40 | } value; | |
41 | DeviceProperty *next; | |
42 | }; | |
43 | ||
44 | struct DeviceType { | |
45 | const char *name; | |
02e2da45 | 46 | DeviceInfo *info; |
aae9460e PB |
47 | int size; |
48 | DeviceType *next; | |
49 | }; | |
50 | ||
02e2da45 PB |
51 | /* This is a nasty hack to allow passing a NULL bus to qdev_create. */ |
52 | BusState *main_system_bus; | |
4d6ae674 | 53 | |
aae9460e PB |
54 | static DeviceType *device_type_list; |
55 | ||
56 | /* Register a new device type. */ | |
02e2da45 | 57 | void qdev_register(const char *name, int size, DeviceInfo *info) |
aae9460e PB |
58 | { |
59 | DeviceType *t; | |
60 | ||
61 | assert(size >= sizeof(DeviceState)); | |
62 | ||
63 | t = qemu_mallocz(sizeof(DeviceType)); | |
64 | t->next = device_type_list; | |
65 | device_type_list = t; | |
66 | t->name = qemu_strdup(name); | |
67 | t->size = size; | |
02e2da45 | 68 | t->info = info; |
aae9460e PB |
69 | } |
70 | ||
71 | /* Create a new device. This only initializes the device state structure | |
72 | and allows properties to be set. qdev_init should be called to | |
73 | initialize the actual device emulation. */ | |
02e2da45 | 74 | DeviceState *qdev_create(BusState *bus, const char *name) |
aae9460e PB |
75 | { |
76 | DeviceType *t; | |
77 | DeviceState *dev; | |
78 | ||
79 | for (t = device_type_list; t; t = t->next) { | |
80 | if (strcmp(t->name, name) == 0) { | |
81 | break; | |
82 | } | |
83 | } | |
84 | if (!t) { | |
02e2da45 | 85 | hw_error("Unknown device '%s'\n", name); |
aae9460e PB |
86 | } |
87 | ||
88 | dev = qemu_mallocz(t->size); | |
aae9460e | 89 | dev->type = t; |
02e2da45 PB |
90 | |
91 | if (!bus) { | |
92 | /* ???: This assumes system busses have no additional state. */ | |
93 | if (!main_system_bus) { | |
94 | main_system_bus = qbus_create(BUS_TYPE_SYSTEM, sizeof(BusState), | |
95 | NULL, "main-system-bus"); | |
96 | } | |
97 | bus = main_system_bus; | |
98 | } | |
99 | if (t->info->bus_type != bus->type) { | |
100 | /* TODO: Print bus type names. */ | |
101 | hw_error("Device '%s' on wrong bus type (%d/%d)", name, | |
102 | t->info->bus_type, bus->type); | |
103 | } | |
104 | dev->parent_bus = bus; | |
105 | LIST_INSERT_HEAD(&bus->children, dev, sibling); | |
aae9460e PB |
106 | return dev; |
107 | } | |
108 | ||
109 | /* Initialize a device. Device properties should be set before calling | |
110 | this function. IRQs and MMIO regions should be connected/mapped after | |
111 | calling this function. */ | |
112 | void qdev_init(DeviceState *dev) | |
113 | { | |
02e2da45 PB |
114 | dev->type->info->init(dev, dev->type->info); |
115 | } | |
116 | ||
117 | /* Unlink device from bus and free the structure. */ | |
118 | void qdev_free(DeviceState *dev) | |
119 | { | |
120 | LIST_REMOVE(dev, sibling); | |
121 | free(dev); | |
aae9460e PB |
122 | } |
123 | ||
1431b6a1 PB |
124 | static DeviceProperty *create_prop(DeviceState *dev, const char *name, |
125 | DevicePropType type) | |
aae9460e PB |
126 | { |
127 | DeviceProperty *prop; | |
128 | ||
129 | /* TODO: Check for duplicate properties. */ | |
130 | prop = qemu_mallocz(sizeof(*prop)); | |
131 | prop->name = qemu_strdup(name); | |
1431b6a1 | 132 | prop->type = type; |
aae9460e PB |
133 | prop->next = dev->props; |
134 | dev->props = prop; | |
135 | ||
136 | return prop; | |
137 | } | |
138 | ||
89a740e1 | 139 | void qdev_set_prop_int(DeviceState *dev, const char *name, uint64_t value) |
aae9460e PB |
140 | { |
141 | DeviceProperty *prop; | |
142 | ||
1431b6a1 | 143 | prop = create_prop(dev, name, PROP_TYPE_INT); |
aae9460e PB |
144 | prop->value.i = value; |
145 | } | |
146 | ||
1431b6a1 PB |
147 | void qdev_set_prop_dev(DeviceState *dev, const char *name, DeviceState *value) |
148 | { | |
149 | DeviceProperty *prop; | |
150 | ||
151 | prop = create_prop(dev, name, PROP_TYPE_DEV); | |
152 | prop->value.ptr = value; | |
153 | } | |
154 | ||
aae9460e PB |
155 | void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value) |
156 | { | |
157 | DeviceProperty *prop; | |
158 | ||
db241f40 | 159 | prop = create_prop(dev, name, PROP_TYPE_PTR); |
aae9460e PB |
160 | prop->value.ptr = value; |
161 | } | |
162 | ||
9d07d757 PB |
163 | void qdev_set_netdev(DeviceState *dev, NICInfo *nd) |
164 | { | |
165 | assert(!dev->nd); | |
166 | dev->nd = nd; | |
167 | } | |
168 | ||
aae9460e | 169 | |
aae9460e PB |
170 | /* Get a character (serial) device interface. */ |
171 | CharDriverState *qdev_init_chardev(DeviceState *dev) | |
172 | { | |
173 | static int next_serial; | |
174 | static int next_virtconsole; | |
175 | /* FIXME: This is a nasty hack that needs to go away. */ | |
aca312af | 176 | if (strncmp(dev->type->name, "virtio", 6) == 0) { |
aae9460e PB |
177 | return virtcon_hds[next_virtconsole++]; |
178 | } else { | |
179 | return serial_hds[next_serial++]; | |
180 | } | |
181 | } | |
182 | ||
02e2da45 | 183 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 184 | { |
02e2da45 | 185 | return dev->parent_bus; |
aae9460e PB |
186 | } |
187 | ||
1431b6a1 PB |
188 | static DeviceProperty *find_prop(DeviceState *dev, const char *name, |
189 | DevicePropType type) | |
aae9460e PB |
190 | { |
191 | DeviceProperty *prop; | |
192 | ||
193 | for (prop = dev->props; prop; prop = prop->next) { | |
194 | if (strcmp(prop->name, name) == 0) { | |
1431b6a1 | 195 | assert (prop->type == type); |
aae9460e PB |
196 | return prop; |
197 | } | |
198 | } | |
199 | return NULL; | |
200 | } | |
201 | ||
202 | uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def) | |
203 | { | |
204 | DeviceProperty *prop; | |
205 | ||
1431b6a1 PB |
206 | prop = find_prop(dev, name, PROP_TYPE_INT); |
207 | if (!prop) { | |
aae9460e | 208 | return def; |
1431b6a1 | 209 | } |
aae9460e PB |
210 | |
211 | return prop->value.i; | |
212 | } | |
213 | ||
214 | void *qdev_get_prop_ptr(DeviceState *dev, const char *name) | |
215 | { | |
216 | DeviceProperty *prop; | |
217 | ||
1431b6a1 | 218 | prop = find_prop(dev, name, PROP_TYPE_PTR); |
aae9460e PB |
219 | assert(prop); |
220 | return prop->value.ptr; | |
221 | } | |
222 | ||
1431b6a1 PB |
223 | DeviceState *qdev_get_prop_dev(DeviceState *dev, const char *name) |
224 | { | |
225 | DeviceProperty *prop; | |
226 | ||
227 | prop = find_prop(dev, name, PROP_TYPE_DEV); | |
228 | if (!prop) { | |
229 | return NULL; | |
230 | } | |
231 | return prop->value.ptr; | |
232 | } | |
233 | ||
aae9460e PB |
234 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
235 | { | |
236 | assert(dev->num_gpio_in == 0); | |
237 | dev->num_gpio_in = n; | |
238 | dev->gpio_in = qemu_allocate_irqs(handler, dev, n); | |
239 | } | |
240 | ||
241 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
242 | { | |
243 | assert(dev->num_gpio_out == 0); | |
244 | dev->num_gpio_out = n; | |
245 | dev->gpio_out = pins; | |
246 | } | |
247 | ||
248 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
249 | { | |
250 | assert(n >= 0 && n < dev->num_gpio_in); | |
251 | return dev->gpio_in[n]; | |
252 | } | |
253 | ||
254 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
255 | { | |
256 | assert(n >= 0 && n < dev->num_gpio_out); | |
257 | dev->gpio_out[n] = pin; | |
258 | } | |
259 | ||
9d07d757 | 260 | VLANClientState *qdev_get_vlan_client(DeviceState *dev, |
cda9046b MM |
261 | NetCanReceive *can_receive, |
262 | NetReceive *receive, | |
263 | NetReceiveIOV *receive_iov, | |
9d07d757 PB |
264 | NetCleanup *cleanup, |
265 | void *opaque) | |
266 | { | |
267 | NICInfo *nd = dev->nd; | |
268 | assert(nd); | |
cda9046b MM |
269 | return qemu_new_vlan_client(nd->vlan, nd->model, nd->name, can_receive, |
270 | receive, receive_iov, cleanup, opaque); | |
9d07d757 PB |
271 | } |
272 | ||
273 | ||
274 | void qdev_get_macaddr(DeviceState *dev, uint8_t *macaddr) | |
275 | { | |
276 | memcpy(macaddr, dev->nd->macaddr, 6); | |
277 | } | |
278 | ||
aae9460e PB |
279 | static int next_block_unit[IF_COUNT]; |
280 | ||
281 | /* Get a block device. This should only be used for single-drive devices | |
282 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
283 | appropriate bus. */ | |
284 | BlockDriverState *qdev_init_bdrv(DeviceState *dev, BlockInterfaceType type) | |
285 | { | |
286 | int unit = next_block_unit[type]++; | |
287 | int index; | |
288 | ||
289 | index = drive_get_index(type, 0, unit); | |
290 | if (index == -1) { | |
291 | return NULL; | |
292 | } | |
293 | return drives_table[index].bdrv; | |
294 | } | |
4d6ae674 | 295 | |
02e2da45 | 296 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 297 | { |
02e2da45 | 298 | BusState *bus; |
4d6ae674 | 299 | |
02e2da45 | 300 | LIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 301 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 302 | return bus; |
4d6ae674 PB |
303 | } |
304 | } | |
305 | return NULL; | |
306 | } | |
307 | ||
6f68ecb2 PB |
308 | static int next_scsi_bus; |
309 | ||
310 | /* Create a scsi bus, and attach devices to it. */ | |
311 | /* TODO: Actually create a scsi bus for hotplug to use. */ | |
312 | void scsi_bus_new(DeviceState *host, SCSIAttachFn attach) | |
313 | { | |
314 | int bus = next_scsi_bus++; | |
315 | int unit; | |
316 | int index; | |
317 | ||
318 | for (unit = 0; unit < MAX_SCSI_DEVS; unit++) { | |
319 | index = drive_get_index(IF_SCSI, bus, unit); | |
320 | if (index == -1) { | |
321 | continue; | |
322 | } | |
323 | attach(host, drives_table[index].bdrv, unit); | |
324 | } | |
325 | } | |
02e2da45 PB |
326 | |
327 | BusState *qbus_create(BusType type, size_t size, | |
328 | DeviceState *parent, const char *name) | |
329 | { | |
330 | BusState *bus; | |
331 | ||
332 | bus = qemu_mallocz(size); | |
333 | bus->type = type; | |
334 | bus->parent = parent; | |
335 | bus->name = qemu_strdup(name); | |
336 | LIST_INIT(&bus->children); | |
337 | if (parent) { | |
338 | LIST_INSERT_HEAD(&parent->child_bus, bus, sibling); | |
339 | } | |
340 | return bus; | |
341 | } | |
cae4956e GH |
342 | |
343 | static const char *bus_type_names[] = { | |
98ba2632 GH |
344 | [ BUS_TYPE_SYSTEM ] = "System", |
345 | [ BUS_TYPE_PCI ] = "PCI", | |
346 | [ BUS_TYPE_SCSI ] = "SCSI", | |
347 | [ BUS_TYPE_I2C ] = "I2C", | |
348 | [ BUS_TYPE_SSI ] = "SSI", | |
cae4956e GH |
349 | }; |
350 | ||
351 | #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) | |
352 | static void qbus_print(Monitor *mon, BusState *bus, int indent); | |
353 | ||
354 | static void qdev_print(Monitor *mon, DeviceState *dev, int indent) | |
355 | { | |
356 | DeviceProperty *prop; | |
357 | BusState *child; | |
358 | qdev_printf("dev: %s\n", dev->type->name); | |
359 | indent += 2; | |
360 | if (dev->num_gpio_in) { | |
361 | qdev_printf("gpio-in %d\n", dev->num_gpio_in); | |
362 | } | |
363 | if (dev->num_gpio_out) { | |
364 | qdev_printf("gpio-out %d\n", dev->num_gpio_out); | |
365 | } | |
366 | for (prop = dev->props; prop; prop = prop->next) { | |
367 | switch (prop->type) { | |
368 | case PROP_TYPE_INT: | |
369 | qdev_printf("prop-int %s 0x%" PRIx64 "\n", prop->name, | |
370 | prop->value.i); | |
371 | break; | |
372 | case PROP_TYPE_PTR: | |
373 | qdev_printf("prop-ptr %s\n", prop->name); | |
374 | break; | |
375 | case PROP_TYPE_DEV: | |
376 | qdev_printf("prop-dev %s %s\n", prop->name, | |
377 | ((DeviceState *)prop->value.ptr)->type->name); | |
378 | break; | |
379 | default: | |
380 | qdev_printf("prop-unknown%d %s\n", prop->type, prop->name); | |
381 | break; | |
382 | } | |
383 | } | |
384 | switch (dev->parent_bus->type) { | |
385 | case BUS_TYPE_SYSTEM: | |
386 | sysbus_dev_print(mon, dev, indent); | |
387 | break; | |
388 | default: | |
389 | break; | |
390 | } | |
391 | LIST_FOREACH(child, &dev->child_bus, sibling) { | |
392 | qbus_print(mon, child, indent); | |
393 | } | |
394 | } | |
395 | ||
396 | static void qbus_print(Monitor *mon, BusState *bus, int indent) | |
397 | { | |
398 | struct DeviceState *dev; | |
399 | ||
400 | qdev_printf("bus: %s\n", bus->name); | |
401 | indent += 2; | |
402 | qdev_printf("type %s\n", bus_type_names[bus->type]); | |
403 | LIST_FOREACH(dev, &bus->children, sibling) { | |
404 | qdev_print(mon, dev, indent); | |
405 | } | |
406 | } | |
407 | #undef qdev_printf | |
408 | ||
409 | void do_info_qtree(Monitor *mon) | |
410 | { | |
411 | if (main_system_bus) | |
412 | qbus_print(mon, main_system_bus, 0); | |
413 | } |