kvm: use qemu_free consistently
[qemu.git] / hw / usb-bus.c
blobabc7e61a59ec1337476dc92c8d60ace15e4be150
1 #include "hw.h"
2 #include "usb.h"
3 #include "qdev.h"
4 #include "sysemu.h"
5 #include "monitor.h"
7 static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
9 static char *usb_get_dev_path(DeviceState *dev);
10 static char *usb_get_fw_dev_path(DeviceState *qdev);
12 static struct BusInfo usb_bus_info = {
13 .name = "USB",
14 .size = sizeof(USBBus),
15 .print_dev = usb_bus_dev_print,
16 .get_dev_path = usb_get_dev_path,
17 .get_fw_dev_path = usb_get_fw_dev_path,
18 .props = (Property[]) {
19 DEFINE_PROP_STRING("port", USBDevice, port_path),
20 DEFINE_PROP_END_OF_LIST()
23 static int next_usb_bus = 0;
24 static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
26 const VMStateDescription vmstate_usb_device = {
27 .name = "USBDevice",
28 .version_id = 1,
29 .minimum_version_id = 1,
30 .fields = (VMStateField []) {
31 VMSTATE_UINT8(addr, USBDevice),
32 VMSTATE_INT32(state, USBDevice),
33 VMSTATE_INT32(remote_wakeup, USBDevice),
34 VMSTATE_INT32(setup_state, USBDevice),
35 VMSTATE_INT32(setup_len, USBDevice),
36 VMSTATE_INT32(setup_index, USBDevice),
37 VMSTATE_UINT8_ARRAY(setup_buf, USBDevice, 8),
38 VMSTATE_END_OF_LIST(),
42 void usb_bus_new(USBBus *bus, DeviceState *host)
44 qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
45 bus->busnr = next_usb_bus++;
46 bus->qbus.allow_hotplug = 1; /* Yes, we can */
47 QTAILQ_INIT(&bus->free);
48 QTAILQ_INIT(&bus->used);
49 QTAILQ_INSERT_TAIL(&busses, bus, next);
52 USBBus *usb_bus_find(int busnr)
54 USBBus *bus;
56 if (-1 == busnr)
57 return QTAILQ_FIRST(&busses);
58 QTAILQ_FOREACH(bus, &busses, next) {
59 if (bus->busnr == busnr)
60 return bus;
62 return NULL;
65 static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base)
67 USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
68 USBDeviceInfo *info = DO_UPCAST(USBDeviceInfo, qdev, base);
69 int rc;
71 pstrcpy(dev->product_desc, sizeof(dev->product_desc), info->product_desc);
72 dev->info = info;
73 dev->auto_attach = 1;
74 QLIST_INIT(&dev->strings);
75 rc = dev->info->init(dev);
76 if (rc == 0 && dev->auto_attach)
77 usb_device_attach(dev);
78 return rc;
81 static int usb_qdev_exit(DeviceState *qdev)
83 USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
85 usb_device_detach(dev);
86 if (dev->info->handle_destroy) {
87 dev->info->handle_destroy(dev);
89 return 0;
92 void usb_qdev_register(USBDeviceInfo *info)
94 info->qdev.bus_info = &usb_bus_info;
95 info->qdev.init = usb_qdev_init;
96 info->qdev.unplug = qdev_simple_unplug_cb;
97 info->qdev.exit = usb_qdev_exit;
98 qdev_register(&info->qdev);
101 void usb_qdev_register_many(USBDeviceInfo *info)
103 while (info->qdev.name) {
104 usb_qdev_register(info);
105 info++;
109 USBDevice *usb_create(USBBus *bus, const char *name)
111 DeviceState *dev;
113 #if 1
114 /* temporary stopgap until all usb is properly qdev-ified */
115 if (!bus) {
116 bus = usb_bus_find(-1);
117 if (!bus)
118 return NULL;
119 fprintf(stderr, "%s: no bus specified, using \"%s\" for \"%s\"\n",
120 __FUNCTION__, bus->qbus.name, name);
122 #endif
124 dev = qdev_create(&bus->qbus, name);
125 return DO_UPCAST(USBDevice, qdev, dev);
128 USBDevice *usb_create_simple(USBBus *bus, const char *name)
130 USBDevice *dev = usb_create(bus, name);
131 if (!dev) {
132 hw_error("Failed to create USB device '%s'\n", name);
134 qdev_init_nofail(&dev->qdev);
135 return dev;
138 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
139 USBPortOps *ops, int speedmask)
141 port->opaque = opaque;
142 port->index = index;
143 port->opaque = opaque;
144 port->index = index;
145 port->ops = ops;
146 port->speedmask = speedmask;
147 QTAILQ_INSERT_TAIL(&bus->free, port, next);
148 bus->nfree++;
151 void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr)
153 if (upstream) {
154 snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
155 upstream->path, portnr);
156 } else {
157 snprintf(downstream->path, sizeof(downstream->path), "%d", portnr);
161 void usb_unregister_port(USBBus *bus, USBPort *port)
163 if (port->dev)
164 qdev_free(&port->dev->qdev);
165 QTAILQ_REMOVE(&bus->free, port, next);
166 bus->nfree--;
169 static void do_attach(USBDevice *dev)
171 USBBus *bus = usb_bus_from_device(dev);
172 USBPort *port;
174 if (dev->attached) {
175 fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
176 dev->product_desc);
177 return;
179 if (dev->port_path) {
180 QTAILQ_FOREACH(port, &bus->free, next) {
181 if (strcmp(port->path, dev->port_path) == 0) {
182 break;
185 if (port == NULL) {
186 fprintf(stderr, "Warning: usb port %s (bus %s) not found\n",
187 dev->port_path, bus->qbus.name);
188 return;
190 } else {
191 port = QTAILQ_FIRST(&bus->free);
194 dev->attached++;
195 QTAILQ_REMOVE(&bus->free, port, next);
196 bus->nfree--;
198 usb_attach(port, dev);
200 QTAILQ_INSERT_TAIL(&bus->used, port, next);
201 bus->nused++;
204 int usb_device_attach(USBDevice *dev)
206 USBBus *bus = usb_bus_from_device(dev);
208 if (bus->nfree == 1 && dev->port_path == NULL) {
209 /* Create a new hub and chain it on
210 (unless a physical port location is specified). */
211 usb_create_simple(bus, "usb-hub");
213 do_attach(dev);
214 return 0;
217 int usb_device_detach(USBDevice *dev)
219 USBBus *bus = usb_bus_from_device(dev);
220 USBPort *port;
222 if (!dev->attached) {
223 fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
224 dev->product_desc);
225 return -1;
227 dev->attached--;
229 QTAILQ_FOREACH(port, &bus->used, next) {
230 if (port->dev == dev)
231 break;
233 assert(port != NULL);
235 QTAILQ_REMOVE(&bus->used, port, next);
236 bus->nused--;
238 usb_attach(port, NULL);
240 QTAILQ_INSERT_TAIL(&bus->free, port, next);
241 bus->nfree++;
242 return 0;
245 int usb_device_delete_addr(int busnr, int addr)
247 USBBus *bus;
248 USBPort *port;
249 USBDevice *dev;
251 bus = usb_bus_find(busnr);
252 if (!bus)
253 return -1;
255 QTAILQ_FOREACH(port, &bus->used, next) {
256 if (port->dev->addr == addr)
257 break;
259 if (!port)
260 return -1;
261 dev = port->dev;
263 qdev_free(&dev->qdev);
264 return 0;
267 static const char *usb_speed(unsigned int speed)
269 static const char *txt[] = {
270 [ USB_SPEED_LOW ] = "1.5",
271 [ USB_SPEED_FULL ] = "12",
272 [ USB_SPEED_HIGH ] = "480",
274 if (speed >= ARRAY_SIZE(txt))
275 return "?";
276 return txt[speed];
279 static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
281 USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
282 USBBus *bus = usb_bus_from_device(dev);
284 monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n",
285 indent, "", bus->busnr, dev->addr,
286 dev->port ? dev->port->path : "-",
287 usb_speed(dev->speed), dev->product_desc,
288 dev->attached ? ", attached" : "");
291 static char *usb_get_dev_path(DeviceState *qdev)
293 USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
294 return qemu_strdup(dev->port->path);
297 static char *usb_get_fw_dev_path(DeviceState *qdev)
299 USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
300 char *fw_path, *in;
301 ssize_t pos = 0, fw_len;
302 long nr;
304 fw_len = 32 + strlen(dev->port->path) * 6;
305 fw_path = qemu_malloc(fw_len);
306 in = dev->port->path;
307 while (fw_len - pos > 0) {
308 nr = strtol(in, &in, 10);
309 if (in[0] == '.') {
310 /* some hub between root port and device */
311 pos += snprintf(fw_path + pos, fw_len - pos, "hub@%ld/", nr);
312 in++;
313 } else {
314 /* the device itself */
315 pos += snprintf(fw_path + pos, fw_len - pos, "%s@%ld",
316 qdev_fw_name(qdev), nr);
317 break;
320 return fw_path;
323 void usb_info(Monitor *mon)
325 USBBus *bus;
326 USBDevice *dev;
327 USBPort *port;
329 if (QTAILQ_EMPTY(&busses)) {
330 monitor_printf(mon, "USB support not enabled\n");
331 return;
334 QTAILQ_FOREACH(bus, &busses, next) {
335 QTAILQ_FOREACH(port, &bus->used, next) {
336 dev = port->dev;
337 if (!dev)
338 continue;
339 monitor_printf(mon, " Device %d.%d, Port %s, Speed %s Mb/s, Product %s\n",
340 bus->busnr, dev->addr, port->path, usb_speed(dev->speed),
341 dev->product_desc);
346 /* handle legacy -usbdevice cmd line option */
347 USBDevice *usbdevice_create(const char *cmdline)
349 USBBus *bus = usb_bus_find(-1 /* any */);
350 DeviceInfo *info;
351 USBDeviceInfo *usb;
352 char driver[32];
353 const char *params;
354 int len;
356 params = strchr(cmdline,':');
357 if (params) {
358 params++;
359 len = params - cmdline;
360 if (len > sizeof(driver))
361 len = sizeof(driver);
362 pstrcpy(driver, len, cmdline);
363 } else {
364 params = "";
365 pstrcpy(driver, sizeof(driver), cmdline);
368 for (info = device_info_list; info != NULL; info = info->next) {
369 if (info->bus_info != &usb_bus_info)
370 continue;
371 usb = DO_UPCAST(USBDeviceInfo, qdev, info);
372 if (usb->usbdevice_name == NULL)
373 continue;
374 if (strcmp(usb->usbdevice_name, driver) != 0)
375 continue;
376 break;
378 if (info == NULL) {
379 #if 0
380 /* no error because some drivers are not converted (yet) */
381 error_report("usbdevice %s not found", driver);
382 #endif
383 return NULL;
386 if (!usb->usbdevice_init) {
387 if (*params) {
388 error_report("usbdevice %s accepts no params", driver);
389 return NULL;
391 return usb_create_simple(bus, usb->qdev.name);
393 return usb->usbdevice_init(params);