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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 | |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
aae9460e PB |
18 | */ |
19 | ||
20 | /* The theory here is that it should be possible to create a machine without | |
21 | knowledge of specific devices. Historically board init routines have | |
22 | passed a bunch of arguments to each device, requiring the board know | |
23 | exactly which device it is dealing with. This file provides an abstract | |
24 | API for device configuration and initialization. Devices will generally | |
25 | inherit from a particular bus (e.g. PCI or I2C) rather than | |
26 | this API directly. */ | |
27 | ||
9d07d757 | 28 | #include "net.h" |
aae9460e PB |
29 | #include "qdev.h" |
30 | #include "sysemu.h" | |
cae4956e | 31 | #include "monitor.h" |
aae9460e PB |
32 | |
33 | struct DeviceProperty { | |
34 | const char *name; | |
1431b6a1 | 35 | DevicePropType type; |
aae9460e | 36 | union { |
89a740e1 | 37 | uint64_t i; |
aae9460e PB |
38 | void *ptr; |
39 | } value; | |
40 | DeviceProperty *next; | |
41 | }; | |
42 | ||
02e2da45 | 43 | /* This is a nasty hack to allow passing a NULL bus to qdev_create. */ |
b9aaf7f8 | 44 | static BusState *main_system_bus; |
10c4c98a | 45 | extern struct BusInfo system_bus_info; |
4d6ae674 | 46 | |
042f84d0 | 47 | static DeviceInfo *device_info_list; |
aae9460e PB |
48 | |
49 | /* Register a new device type. */ | |
074f2fff | 50 | void qdev_register(DeviceInfo *info) |
aae9460e | 51 | { |
074f2fff | 52 | assert(info->size >= sizeof(DeviceState)); |
042f84d0 | 53 | assert(!info->next); |
aae9460e | 54 | |
042f84d0 GH |
55 | info->next = device_info_list; |
56 | device_info_list = info; | |
aae9460e PB |
57 | } |
58 | ||
59 | /* Create a new device. This only initializes the device state structure | |
60 | and allows properties to be set. qdev_init should be called to | |
61 | initialize the actual device emulation. */ | |
02e2da45 | 62 | DeviceState *qdev_create(BusState *bus, const char *name) |
aae9460e | 63 | { |
042f84d0 | 64 | DeviceInfo *info; |
aae9460e PB |
65 | DeviceState *dev; |
66 | ||
10c4c98a GH |
67 | if (!bus) { |
68 | if (!main_system_bus) { | |
69 | main_system_bus = qbus_create(&system_bus_info, NULL, "main-system-bus"); | |
aae9460e | 70 | } |
10c4c98a GH |
71 | bus = main_system_bus; |
72 | } | |
73 | ||
042f84d0 GH |
74 | for (info = device_info_list; info != NULL; info = info->next) { |
75 | if (info->bus_info != bus->info) | |
10c4c98a | 76 | continue; |
042f84d0 | 77 | if (strcmp(info->name, name) != 0) |
10c4c98a GH |
78 | continue; |
79 | break; | |
aae9460e | 80 | } |
042f84d0 | 81 | if (!info) { |
10c4c98a | 82 | hw_error("Unknown device '%s' for bus '%s'\n", name, bus->info->name); |
aae9460e PB |
83 | } |
84 | ||
042f84d0 GH |
85 | dev = qemu_mallocz(info->size); |
86 | dev->info = info; | |
02e2da45 PB |
87 | dev->parent_bus = bus; |
88 | LIST_INSERT_HEAD(&bus->children, dev, sibling); | |
aae9460e PB |
89 | return dev; |
90 | } | |
91 | ||
92 | /* Initialize a device. Device properties should be set before calling | |
93 | this function. IRQs and MMIO regions should be connected/mapped after | |
94 | calling this function. */ | |
95 | void qdev_init(DeviceState *dev) | |
96 | { | |
042f84d0 | 97 | dev->info->init(dev, dev->info); |
02e2da45 PB |
98 | } |
99 | ||
100 | /* Unlink device from bus and free the structure. */ | |
101 | void qdev_free(DeviceState *dev) | |
102 | { | |
103 | LIST_REMOVE(dev, sibling); | |
104 | free(dev); | |
aae9460e PB |
105 | } |
106 | ||
1431b6a1 PB |
107 | static DeviceProperty *create_prop(DeviceState *dev, const char *name, |
108 | DevicePropType type) | |
aae9460e PB |
109 | { |
110 | DeviceProperty *prop; | |
111 | ||
112 | /* TODO: Check for duplicate properties. */ | |
113 | prop = qemu_mallocz(sizeof(*prop)); | |
114 | prop->name = qemu_strdup(name); | |
1431b6a1 | 115 | prop->type = type; |
aae9460e PB |
116 | prop->next = dev->props; |
117 | dev->props = prop; | |
118 | ||
119 | return prop; | |
120 | } | |
121 | ||
89a740e1 | 122 | void qdev_set_prop_int(DeviceState *dev, const char *name, uint64_t value) |
aae9460e PB |
123 | { |
124 | DeviceProperty *prop; | |
125 | ||
1431b6a1 | 126 | prop = create_prop(dev, name, PROP_TYPE_INT); |
aae9460e PB |
127 | prop->value.i = value; |
128 | } | |
129 | ||
1431b6a1 PB |
130 | void qdev_set_prop_dev(DeviceState *dev, const char *name, DeviceState *value) |
131 | { | |
132 | DeviceProperty *prop; | |
133 | ||
134 | prop = create_prop(dev, name, PROP_TYPE_DEV); | |
135 | prop->value.ptr = value; | |
136 | } | |
137 | ||
aae9460e PB |
138 | void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value) |
139 | { | |
140 | DeviceProperty *prop; | |
141 | ||
db241f40 | 142 | prop = create_prop(dev, name, PROP_TYPE_PTR); |
aae9460e PB |
143 | prop->value.ptr = value; |
144 | } | |
145 | ||
9d07d757 PB |
146 | void qdev_set_netdev(DeviceState *dev, NICInfo *nd) |
147 | { | |
148 | assert(!dev->nd); | |
149 | dev->nd = nd; | |
150 | } | |
151 | ||
aae9460e | 152 | |
aae9460e PB |
153 | /* Get a character (serial) device interface. */ |
154 | CharDriverState *qdev_init_chardev(DeviceState *dev) | |
155 | { | |
156 | static int next_serial; | |
157 | static int next_virtconsole; | |
158 | /* FIXME: This is a nasty hack that needs to go away. */ | |
042f84d0 | 159 | if (strncmp(dev->info->name, "virtio", 6) == 0) { |
aae9460e PB |
160 | return virtcon_hds[next_virtconsole++]; |
161 | } else { | |
162 | return serial_hds[next_serial++]; | |
163 | } | |
164 | } | |
165 | ||
02e2da45 | 166 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 167 | { |
02e2da45 | 168 | return dev->parent_bus; |
aae9460e PB |
169 | } |
170 | ||
1431b6a1 PB |
171 | static DeviceProperty *find_prop(DeviceState *dev, const char *name, |
172 | DevicePropType type) | |
aae9460e PB |
173 | { |
174 | DeviceProperty *prop; | |
175 | ||
176 | for (prop = dev->props; prop; prop = prop->next) { | |
177 | if (strcmp(prop->name, name) == 0) { | |
1431b6a1 | 178 | assert (prop->type == type); |
aae9460e PB |
179 | return prop; |
180 | } | |
181 | } | |
182 | return NULL; | |
183 | } | |
184 | ||
185 | uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def) | |
186 | { | |
187 | DeviceProperty *prop; | |
188 | ||
1431b6a1 PB |
189 | prop = find_prop(dev, name, PROP_TYPE_INT); |
190 | if (!prop) { | |
aae9460e | 191 | return def; |
1431b6a1 | 192 | } |
aae9460e PB |
193 | |
194 | return prop->value.i; | |
195 | } | |
196 | ||
197 | void *qdev_get_prop_ptr(DeviceState *dev, const char *name) | |
198 | { | |
199 | DeviceProperty *prop; | |
200 | ||
1431b6a1 | 201 | prop = find_prop(dev, name, PROP_TYPE_PTR); |
aae9460e PB |
202 | assert(prop); |
203 | return prop->value.ptr; | |
204 | } | |
205 | ||
1431b6a1 PB |
206 | DeviceState *qdev_get_prop_dev(DeviceState *dev, const char *name) |
207 | { | |
208 | DeviceProperty *prop; | |
209 | ||
210 | prop = find_prop(dev, name, PROP_TYPE_DEV); | |
211 | if (!prop) { | |
212 | return NULL; | |
213 | } | |
214 | return prop->value.ptr; | |
215 | } | |
216 | ||
aae9460e PB |
217 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
218 | { | |
219 | assert(dev->num_gpio_in == 0); | |
220 | dev->num_gpio_in = n; | |
221 | dev->gpio_in = qemu_allocate_irqs(handler, dev, n); | |
222 | } | |
223 | ||
224 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
225 | { | |
226 | assert(dev->num_gpio_out == 0); | |
227 | dev->num_gpio_out = n; | |
228 | dev->gpio_out = pins; | |
229 | } | |
230 | ||
231 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
232 | { | |
233 | assert(n >= 0 && n < dev->num_gpio_in); | |
234 | return dev->gpio_in[n]; | |
235 | } | |
236 | ||
237 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
238 | { | |
239 | assert(n >= 0 && n < dev->num_gpio_out); | |
240 | dev->gpio_out[n] = pin; | |
241 | } | |
242 | ||
9d07d757 | 243 | VLANClientState *qdev_get_vlan_client(DeviceState *dev, |
cda9046b MM |
244 | NetCanReceive *can_receive, |
245 | NetReceive *receive, | |
246 | NetReceiveIOV *receive_iov, | |
9d07d757 PB |
247 | NetCleanup *cleanup, |
248 | void *opaque) | |
249 | { | |
250 | NICInfo *nd = dev->nd; | |
251 | assert(nd); | |
ae50b274 MM |
252 | nd->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name, can_receive, |
253 | receive, receive_iov, cleanup, opaque); | |
254 | return nd->vc; | |
9d07d757 PB |
255 | } |
256 | ||
257 | ||
258 | void qdev_get_macaddr(DeviceState *dev, uint8_t *macaddr) | |
259 | { | |
260 | memcpy(macaddr, dev->nd->macaddr, 6); | |
261 | } | |
262 | ||
aae9460e PB |
263 | static int next_block_unit[IF_COUNT]; |
264 | ||
265 | /* Get a block device. This should only be used for single-drive devices | |
266 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
267 | appropriate bus. */ | |
268 | BlockDriverState *qdev_init_bdrv(DeviceState *dev, BlockInterfaceType type) | |
269 | { | |
270 | int unit = next_block_unit[type]++; | |
271 | int index; | |
272 | ||
273 | index = drive_get_index(type, 0, unit); | |
274 | if (index == -1) { | |
275 | return NULL; | |
276 | } | |
277 | return drives_table[index].bdrv; | |
278 | } | |
4d6ae674 | 279 | |
02e2da45 | 280 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 281 | { |
02e2da45 | 282 | BusState *bus; |
4d6ae674 | 283 | |
02e2da45 | 284 | LIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 285 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 286 | return bus; |
4d6ae674 PB |
287 | } |
288 | } | |
289 | return NULL; | |
290 | } | |
291 | ||
6f68ecb2 PB |
292 | static int next_scsi_bus; |
293 | ||
294 | /* Create a scsi bus, and attach devices to it. */ | |
295 | /* TODO: Actually create a scsi bus for hotplug to use. */ | |
296 | void scsi_bus_new(DeviceState *host, SCSIAttachFn attach) | |
297 | { | |
298 | int bus = next_scsi_bus++; | |
299 | int unit; | |
300 | int index; | |
301 | ||
302 | for (unit = 0; unit < MAX_SCSI_DEVS; unit++) { | |
303 | index = drive_get_index(IF_SCSI, bus, unit); | |
304 | if (index == -1) { | |
305 | continue; | |
306 | } | |
307 | attach(host, drives_table[index].bdrv, unit); | |
308 | } | |
309 | } | |
02e2da45 | 310 | |
10c4c98a | 311 | BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name) |
02e2da45 PB |
312 | { |
313 | BusState *bus; | |
314 | ||
10c4c98a GH |
315 | bus = qemu_mallocz(info->size); |
316 | bus->info = info; | |
02e2da45 PB |
317 | bus->parent = parent; |
318 | bus->name = qemu_strdup(name); | |
319 | LIST_INIT(&bus->children); | |
320 | if (parent) { | |
321 | LIST_INSERT_HEAD(&parent->child_bus, bus, sibling); | |
322 | } | |
323 | return bus; | |
324 | } | |
cae4956e | 325 | |
cae4956e GH |
326 | #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) |
327 | static void qbus_print(Monitor *mon, BusState *bus, int indent); | |
328 | ||
329 | static void qdev_print(Monitor *mon, DeviceState *dev, int indent) | |
330 | { | |
331 | DeviceProperty *prop; | |
332 | BusState *child; | |
042f84d0 | 333 | qdev_printf("dev: %s\n", dev->info->name); |
cae4956e GH |
334 | indent += 2; |
335 | if (dev->num_gpio_in) { | |
336 | qdev_printf("gpio-in %d\n", dev->num_gpio_in); | |
337 | } | |
338 | if (dev->num_gpio_out) { | |
339 | qdev_printf("gpio-out %d\n", dev->num_gpio_out); | |
340 | } | |
341 | for (prop = dev->props; prop; prop = prop->next) { | |
342 | switch (prop->type) { | |
343 | case PROP_TYPE_INT: | |
344 | qdev_printf("prop-int %s 0x%" PRIx64 "\n", prop->name, | |
345 | prop->value.i); | |
346 | break; | |
347 | case PROP_TYPE_PTR: | |
348 | qdev_printf("prop-ptr %s\n", prop->name); | |
349 | break; | |
350 | case PROP_TYPE_DEV: | |
351 | qdev_printf("prop-dev %s %s\n", prop->name, | |
042f84d0 | 352 | ((DeviceState *)prop->value.ptr)->info->name); |
cae4956e GH |
353 | break; |
354 | default: | |
355 | qdev_printf("prop-unknown%d %s\n", prop->type, prop->name); | |
356 | break; | |
357 | } | |
358 | } | |
10c4c98a GH |
359 | if (dev->parent_bus->info->print_dev) |
360 | dev->parent_bus->info->print_dev(mon, dev, indent); | |
cae4956e GH |
361 | LIST_FOREACH(child, &dev->child_bus, sibling) { |
362 | qbus_print(mon, child, indent); | |
363 | } | |
364 | } | |
365 | ||
366 | static void qbus_print(Monitor *mon, BusState *bus, int indent) | |
367 | { | |
368 | struct DeviceState *dev; | |
369 | ||
370 | qdev_printf("bus: %s\n", bus->name); | |
371 | indent += 2; | |
10c4c98a | 372 | qdev_printf("type %s\n", bus->info->name); |
cae4956e GH |
373 | LIST_FOREACH(dev, &bus->children, sibling) { |
374 | qdev_print(mon, dev, indent); | |
375 | } | |
376 | } | |
377 | #undef qdev_printf | |
378 | ||
379 | void do_info_qtree(Monitor *mon) | |
380 | { | |
381 | if (main_system_bus) | |
382 | qbus_print(mon, main_system_bus, 0); | |
383 | } |