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1.1 root 1: #include "hw/hw.h"
2: #include "hw/usb.h"
3: #include "hw/qdev.h"
4: #include "sysemu.h"
5: #include "monitor.h"
6: #include "trace.h"
7:
8: static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
9:
10: static char *usb_get_dev_path(DeviceState *dev);
11: static char *usb_get_fw_dev_path(DeviceState *qdev);
12: static int usb_qdev_exit(DeviceState *qdev);
13:
14: static struct BusInfo usb_bus_info = {
15: .name = "USB",
16: .size = sizeof(USBBus),
17: .print_dev = usb_bus_dev_print,
18: .get_dev_path = usb_get_dev_path,
19: .get_fw_dev_path = usb_get_fw_dev_path,
20: .props = (Property[]) {
21: DEFINE_PROP_STRING("port", USBDevice, port_path),
22: DEFINE_PROP_BIT("full-path", USBDevice, flags,
23: USB_DEV_FLAG_FULL_PATH, true),
24: DEFINE_PROP_END_OF_LIST()
25: },
26: };
27: static int next_usb_bus = 0;
28: static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
29:
30: const VMStateDescription vmstate_usb_device = {
31: .name = "USBDevice",
32: .version_id = 1,
33: .minimum_version_id = 1,
34: .fields = (VMStateField []) {
35: VMSTATE_UINT8(addr, USBDevice),
36: VMSTATE_INT32(state, USBDevice),
37: VMSTATE_INT32(remote_wakeup, USBDevice),
38: VMSTATE_INT32(setup_state, USBDevice),
39: VMSTATE_INT32(setup_len, USBDevice),
40: VMSTATE_INT32(setup_index, USBDevice),
41: VMSTATE_UINT8_ARRAY(setup_buf, USBDevice, 8),
42: VMSTATE_END_OF_LIST(),
43: }
44: };
45:
46: void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host)
47: {
48: qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
49: bus->ops = ops;
50: bus->busnr = next_usb_bus++;
51: bus->qbus.allow_hotplug = 1; /* Yes, we can */
52: QTAILQ_INIT(&bus->free);
53: QTAILQ_INIT(&bus->used);
54: QTAILQ_INSERT_TAIL(&busses, bus, next);
55: }
56:
57: USBBus *usb_bus_find(int busnr)
58: {
59: USBBus *bus;
60:
61: if (-1 == busnr)
62: return QTAILQ_FIRST(&busses);
63: QTAILQ_FOREACH(bus, &busses, next) {
64: if (bus->busnr == busnr)
65: return bus;
66: }
67: return NULL;
68: }
69:
70: static int usb_device_init(USBDevice *dev)
71: {
72: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
73: if (klass->init) {
74: return klass->init(dev);
75: }
76: return 0;
77: }
78:
79: USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr)
80: {
81: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
82: if (klass->find_device) {
83: return klass->find_device(dev, addr);
84: }
85: return NULL;
86: }
87:
88: static void usb_device_handle_destroy(USBDevice *dev)
89: {
90: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
91: if (klass->handle_destroy) {
92: klass->handle_destroy(dev);
93: }
94: }
95:
96: void usb_device_cancel_packet(USBDevice *dev, USBPacket *p)
97: {
98: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
99: if (klass->cancel_packet) {
100: klass->cancel_packet(dev, p);
101: }
102: }
103:
104: void usb_device_handle_attach(USBDevice *dev)
105: {
106: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
107: if (klass->handle_attach) {
108: klass->handle_attach(dev);
109: }
110: }
111:
112: void usb_device_handle_reset(USBDevice *dev)
113: {
114: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
115: if (klass->handle_reset) {
116: klass->handle_reset(dev);
117: }
118: }
119:
120: int usb_device_handle_control(USBDevice *dev, USBPacket *p, int request,
121: int value, int index, int length, uint8_t *data)
122: {
123: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
124: if (klass->handle_control) {
125: return klass->handle_control(dev, p, request, value, index, length,
126: data);
127: }
128: return -ENOSYS;
129: }
130:
131: int usb_device_handle_data(USBDevice *dev, USBPacket *p)
132: {
133: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
134: if (klass->handle_data) {
135: return klass->handle_data(dev, p);
136: }
137: return -ENOSYS;
138: }
139:
140: const char *usb_device_get_product_desc(USBDevice *dev)
141: {
142: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
143: return klass->product_desc;
144: }
145:
146: const USBDesc *usb_device_get_usb_desc(USBDevice *dev)
147: {
148: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
149: return klass->usb_desc;
150: }
151:
152: void usb_device_set_interface(USBDevice *dev, int interface,
153: int alt_old, int alt_new)
154: {
155: USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
156: if (klass->set_interface) {
157: klass->set_interface(dev, interface, alt_old, alt_new);
158: }
159: }
160:
161: static int usb_qdev_init(DeviceState *qdev)
162: {
163: USBDevice *dev = USB_DEVICE(qdev);
164: int rc;
165:
166: pstrcpy(dev->product_desc, sizeof(dev->product_desc),
167: usb_device_get_product_desc(dev));
168: dev->auto_attach = 1;
169: QLIST_INIT(&dev->strings);
170: usb_ep_init(dev);
171: rc = usb_claim_port(dev);
172: if (rc != 0) {
173: return rc;
174: }
175: rc = usb_device_init(dev);
176: if (rc != 0) {
177: usb_release_port(dev);
178: return rc;
179: }
180: if (dev->auto_attach) {
181: rc = usb_device_attach(dev);
182: if (rc != 0) {
183: usb_qdev_exit(qdev);
184: return rc;
185: }
186: }
187: return 0;
188: }
189:
190: static int usb_qdev_exit(DeviceState *qdev)
191: {
192: USBDevice *dev = USB_DEVICE(qdev);
193:
194: if (dev->attached) {
195: usb_device_detach(dev);
196: }
197: usb_device_handle_destroy(dev);
198: if (dev->port) {
199: usb_release_port(dev);
200: }
201: return 0;
202: }
203:
204: typedef struct LegacyUSBFactory
205: {
206: const char *name;
207: const char *usbdevice_name;
208: USBDevice *(*usbdevice_init)(USBBus *bus, const char *params);
209: } LegacyUSBFactory;
210:
211: static GSList *legacy_usb_factory;
212:
213: void usb_legacy_register(const char *typename, const char *usbdevice_name,
214: USBDevice *(*usbdevice_init)(USBBus *bus,
215: const char *params))
216: {
217: if (usbdevice_name) {
218: LegacyUSBFactory *f = g_malloc0(sizeof(*f));
219: f->name = typename;
220: f->usbdevice_name = usbdevice_name;
221: f->usbdevice_init = usbdevice_init;
222: legacy_usb_factory = g_slist_append(legacy_usb_factory, f);
223: }
224: }
225:
226: USBDevice *usb_create(USBBus *bus, const char *name)
227: {
228: DeviceState *dev;
229:
230: dev = qdev_create(&bus->qbus, name);
231: return USB_DEVICE(dev);
232: }
233:
234: USBDevice *usb_create_simple(USBBus *bus, const char *name)
235: {
236: USBDevice *dev = usb_create(bus, name);
237: int rc;
238:
239: if (!dev) {
240: error_report("Failed to create USB device '%s'", name);
241: return NULL;
242: }
243: rc = qdev_init(&dev->qdev);
244: if (rc < 0) {
245: error_report("Failed to initialize USB device '%s'", name);
246: return NULL;
247: }
248: return dev;
249: }
250:
251: static void usb_fill_port(USBPort *port, void *opaque, int index,
252: USBPortOps *ops, int speedmask)
253: {
254: port->opaque = opaque;
255: port->index = index;
256: port->ops = ops;
257: port->speedmask = speedmask;
258: usb_port_location(port, NULL, index + 1);
259: }
260:
261: void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
262: USBPortOps *ops, int speedmask)
263: {
264: usb_fill_port(port, opaque, index, ops, speedmask);
265: QTAILQ_INSERT_TAIL(&bus->free, port, next);
266: bus->nfree++;
267: }
268:
269: int usb_register_companion(const char *masterbus, USBPort *ports[],
270: uint32_t portcount, uint32_t firstport,
271: void *opaque, USBPortOps *ops, int speedmask)
272: {
273: USBBus *bus;
274: int i;
275:
276: QTAILQ_FOREACH(bus, &busses, next) {
277: if (strcmp(bus->qbus.name, masterbus) == 0) {
278: break;
279: }
280: }
281:
282: if (!bus || !bus->ops->register_companion) {
283: qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
284: "an USB masterbus");
285: if (bus) {
286: error_printf_unless_qmp(
287: "USB bus '%s' does not allow companion controllers\n",
288: masterbus);
289: }
290: return -1;
291: }
292:
293: for (i = 0; i < portcount; i++) {
294: usb_fill_port(ports[i], opaque, i, ops, speedmask);
295: }
296:
297: return bus->ops->register_companion(bus, ports, portcount, firstport);
298: }
299:
300: void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr)
301: {
302: if (upstream) {
303: snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
304: upstream->path, portnr);
305: } else {
306: snprintf(downstream->path, sizeof(downstream->path), "%d", portnr);
307: }
308: }
309:
310: void usb_unregister_port(USBBus *bus, USBPort *port)
311: {
312: if (port->dev)
313: qdev_free(&port->dev->qdev);
314: QTAILQ_REMOVE(&bus->free, port, next);
315: bus->nfree--;
316: }
317:
318: int usb_claim_port(USBDevice *dev)
319: {
320: USBBus *bus = usb_bus_from_device(dev);
321: USBPort *port;
322:
323: assert(dev->port == NULL);
324:
325: if (dev->port_path) {
326: QTAILQ_FOREACH(port, &bus->free, next) {
327: if (strcmp(port->path, dev->port_path) == 0) {
328: break;
329: }
330: }
331: if (port == NULL) {
332: error_report("Error: usb port %s (bus %s) not found (in use?)",
333: dev->port_path, bus->qbus.name);
334: return -1;
335: }
336: } else {
337: if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) {
338: /* Create a new hub and chain it on */
339: usb_create_simple(bus, "usb-hub");
340: }
341: if (bus->nfree == 0) {
342: error_report("Error: tried to attach usb device %s to a bus "
343: "with no free ports", dev->product_desc);
344: return -1;
345: }
346: port = QTAILQ_FIRST(&bus->free);
347: }
348: trace_usb_port_claim(bus->busnr, port->path);
349:
350: QTAILQ_REMOVE(&bus->free, port, next);
351: bus->nfree--;
352:
353: dev->port = port;
354: port->dev = dev;
355:
356: QTAILQ_INSERT_TAIL(&bus->used, port, next);
357: bus->nused++;
358: return 0;
359: }
360:
361: void usb_release_port(USBDevice *dev)
362: {
363: USBBus *bus = usb_bus_from_device(dev);
364: USBPort *port = dev->port;
365:
366: assert(port != NULL);
367: trace_usb_port_release(bus->busnr, port->path);
368:
369: QTAILQ_REMOVE(&bus->used, port, next);
370: bus->nused--;
371:
372: dev->port = NULL;
373: port->dev = NULL;
374:
375: QTAILQ_INSERT_TAIL(&bus->free, port, next);
376: bus->nfree++;
377: }
378:
379: int usb_device_attach(USBDevice *dev)
380: {
381: USBBus *bus = usb_bus_from_device(dev);
382: USBPort *port = dev->port;
383:
384: assert(port != NULL);
385: assert(!dev->attached);
386: trace_usb_port_attach(bus->busnr, port->path);
387:
388: if (!(port->speedmask & dev->speedmask)) {
389: error_report("Warning: speed mismatch trying to attach "
390: "usb device %s to bus %s",
391: dev->product_desc, bus->qbus.name);
392: return -1;
393: }
394:
395: dev->attached++;
396: usb_attach(port);
397:
398: return 0;
399: }
400:
401: int usb_device_detach(USBDevice *dev)
402: {
403: USBBus *bus = usb_bus_from_device(dev);
404: USBPort *port = dev->port;
405:
406: assert(port != NULL);
407: assert(dev->attached);
408: trace_usb_port_detach(bus->busnr, port->path);
409:
410: usb_detach(port);
411: dev->attached--;
412: return 0;
413: }
414:
415: int usb_device_delete_addr(int busnr, int addr)
416: {
417: USBBus *bus;
418: USBPort *port;
419: USBDevice *dev;
420:
421: bus = usb_bus_find(busnr);
422: if (!bus)
423: return -1;
424:
425: QTAILQ_FOREACH(port, &bus->used, next) {
426: if (port->dev->addr == addr)
427: break;
428: }
429: if (!port)
430: return -1;
431: dev = port->dev;
432:
433: qdev_free(&dev->qdev);
434: return 0;
435: }
436:
437: static const char *usb_speed(unsigned int speed)
438: {
439: static const char *txt[] = {
440: [ USB_SPEED_LOW ] = "1.5",
441: [ USB_SPEED_FULL ] = "12",
442: [ USB_SPEED_HIGH ] = "480",
443: [ USB_SPEED_SUPER ] = "5000",
444: };
445: if (speed >= ARRAY_SIZE(txt))
446: return "?";
447: return txt[speed];
448: }
449:
450: static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
451: {
452: USBDevice *dev = USB_DEVICE(qdev);
453: USBBus *bus = usb_bus_from_device(dev);
454:
455: monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n",
456: indent, "", bus->busnr, dev->addr,
457: dev->port ? dev->port->path : "-",
458: usb_speed(dev->speed), dev->product_desc,
459: dev->attached ? ", attached" : "");
460: }
461:
462: static char *usb_get_dev_path(DeviceState *qdev)
463: {
464: USBDevice *dev = USB_DEVICE(qdev);
465: DeviceState *hcd = qdev->parent_bus->parent;
466: char *id = NULL;
467:
468: if ((dev->flags & (1 << USB_DEV_FLAG_FULL_PATH)) &&
469: hcd && hcd->parent_bus && hcd->parent_bus->info->get_dev_path) {
470: id = hcd->parent_bus->info->get_dev_path(hcd);
471: }
472: if (id) {
473: char *ret = g_strdup_printf("%s/%s", id, dev->port->path);
474: g_free(id);
475: return ret;
476: } else {
477: return g_strdup(dev->port->path);
478: }
479: }
480:
481: static char *usb_get_fw_dev_path(DeviceState *qdev)
482: {
483: USBDevice *dev = USB_DEVICE(qdev);
484: char *fw_path, *in;
485: ssize_t pos = 0, fw_len;
486: long nr;
487:
488: fw_len = 32 + strlen(dev->port->path) * 6;
489: fw_path = g_malloc(fw_len);
490: in = dev->port->path;
491: while (fw_len - pos > 0) {
492: nr = strtol(in, &in, 10);
493: if (in[0] == '.') {
494: /* some hub between root port and device */
495: pos += snprintf(fw_path + pos, fw_len - pos, "hub@%ld/", nr);
496: in++;
497: } else {
498: /* the device itself */
499: pos += snprintf(fw_path + pos, fw_len - pos, "%s@%ld",
500: qdev_fw_name(qdev), nr);
501: break;
502: }
503: }
504: return fw_path;
505: }
506:
507: void usb_info(Monitor *mon)
508: {
509: USBBus *bus;
510: USBDevice *dev;
511: USBPort *port;
512:
513: if (QTAILQ_EMPTY(&busses)) {
514: monitor_printf(mon, "USB support not enabled\n");
515: return;
516: }
517:
518: QTAILQ_FOREACH(bus, &busses, next) {
519: QTAILQ_FOREACH(port, &bus->used, next) {
520: dev = port->dev;
521: if (!dev)
522: continue;
523: monitor_printf(mon, " Device %d.%d, Port %s, Speed %s Mb/s, Product %s\n",
524: bus->busnr, dev->addr, port->path, usb_speed(dev->speed),
525: dev->product_desc);
526: }
527: }
528: }
529:
530: /* handle legacy -usbdevice cmd line option */
531: USBDevice *usbdevice_create(const char *cmdline)
532: {
533: USBBus *bus = usb_bus_find(-1 /* any */);
534: LegacyUSBFactory *f = NULL;
535: GSList *i;
536: char driver[32];
537: const char *params;
538: int len;
539:
540: params = strchr(cmdline,':');
541: if (params) {
542: params++;
543: len = params - cmdline;
544: if (len > sizeof(driver))
545: len = sizeof(driver);
546: pstrcpy(driver, len, cmdline);
547: } else {
548: params = "";
549: pstrcpy(driver, sizeof(driver), cmdline);
550: }
551:
552: for (i = legacy_usb_factory; i; i = i->next) {
553: f = i->data;
554: if (strcmp(f->usbdevice_name, driver) == 0) {
555: break;
556: }
557: }
558: if (i == NULL) {
559: #if 0
560: /* no error because some drivers are not converted (yet) */
561: error_report("usbdevice %s not found", driver);
562: #endif
563: return NULL;
564: }
565:
566: if (!f->usbdevice_init) {
567: if (*params) {
568: error_report("usbdevice %s accepts no params", driver);
569: return NULL;
570: }
571: return usb_create_simple(bus, f->name);
572: }
573: return f->usbdevice_init(bus, params);
574: }
575:
576: static void usb_device_class_init(ObjectClass *klass, void *data)
577: {
578: DeviceClass *k = DEVICE_CLASS(klass);
579: k->bus_info = &usb_bus_info;
580: k->init = usb_qdev_init;
581: k->unplug = qdev_simple_unplug_cb;
582: k->exit = usb_qdev_exit;
583: }
584:
585: static TypeInfo usb_device_type_info = {
586: .name = TYPE_USB_DEVICE,
587: .parent = TYPE_DEVICE,
588: .instance_size = sizeof(USBDevice),
589: .abstract = true,
590: .class_size = sizeof(USBDeviceClass),
591: .class_init = usb_device_class_init,
592: };
593:
594: static void usb_register_types(void)
595: {
596: type_register_static(&usb_device_type_info);
597: }
598:
599: type_init(usb_register_types)
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