root / hw / usb-hub.c @ ea785922
History | View | Annotate | Download (16.2 kB)
1 |
/*
|
---|---|
2 |
* QEMU USB HUB emulation
|
3 |
*
|
4 |
* Copyright (c) 2005 Fabrice Bellard
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include "vl.h" |
25 |
|
26 |
//#define DEBUG
|
27 |
|
28 |
#define MAX_PORTS 8 |
29 |
|
30 |
typedef struct USBHubPort { |
31 |
USBPort port; |
32 |
uint16_t wPortStatus; |
33 |
uint16_t wPortChange; |
34 |
} USBHubPort; |
35 |
|
36 |
typedef struct USBHubState { |
37 |
USBDevice dev; |
38 |
int nb_ports;
|
39 |
USBHubPort ports[MAX_PORTS]; |
40 |
} USBHubState; |
41 |
|
42 |
#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) |
43 |
#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) |
44 |
#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) |
45 |
#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) |
46 |
#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) |
47 |
#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) |
48 |
#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) |
49 |
|
50 |
#define PORT_STAT_CONNECTION 0x0001 |
51 |
#define PORT_STAT_ENABLE 0x0002 |
52 |
#define PORT_STAT_SUSPEND 0x0004 |
53 |
#define PORT_STAT_OVERCURRENT 0x0008 |
54 |
#define PORT_STAT_RESET 0x0010 |
55 |
#define PORT_STAT_POWER 0x0100 |
56 |
#define PORT_STAT_LOW_SPEED 0x0200 |
57 |
#define PORT_STAT_HIGH_SPEED 0x0400 |
58 |
#define PORT_STAT_TEST 0x0800 |
59 |
#define PORT_STAT_INDICATOR 0x1000 |
60 |
|
61 |
#define PORT_STAT_C_CONNECTION 0x0001 |
62 |
#define PORT_STAT_C_ENABLE 0x0002 |
63 |
#define PORT_STAT_C_SUSPEND 0x0004 |
64 |
#define PORT_STAT_C_OVERCURRENT 0x0008 |
65 |
#define PORT_STAT_C_RESET 0x0010 |
66 |
|
67 |
#define PORT_CONNECTION 0 |
68 |
#define PORT_ENABLE 1 |
69 |
#define PORT_SUSPEND 2 |
70 |
#define PORT_OVERCURRENT 3 |
71 |
#define PORT_RESET 4 |
72 |
#define PORT_POWER 8 |
73 |
#define PORT_LOWSPEED 9 |
74 |
#define PORT_HIGHSPEED 10 |
75 |
#define PORT_C_CONNECTION 16 |
76 |
#define PORT_C_ENABLE 17 |
77 |
#define PORT_C_SUSPEND 18 |
78 |
#define PORT_C_OVERCURRENT 19 |
79 |
#define PORT_C_RESET 20 |
80 |
#define PORT_TEST 21 |
81 |
#define PORT_INDICATOR 22 |
82 |
|
83 |
/* same as Linux kernel root hubs */
|
84 |
|
85 |
static const uint8_t qemu_hub_dev_descriptor[] = { |
86 |
0x12, /* u8 bLength; */ |
87 |
0x01, /* u8 bDescriptorType; Device */ |
88 |
0x10, 0x01, /* u16 bcdUSB; v1.1 */ |
89 |
|
90 |
0x09, /* u8 bDeviceClass; HUB_CLASSCODE */ |
91 |
0x00, /* u8 bDeviceSubClass; */ |
92 |
0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
93 |
0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
94 |
|
95 |
0x00, 0x00, /* u16 idVendor; */ |
96 |
0x00, 0x00, /* u16 idProduct; */ |
97 |
0x01, 0x01, /* u16 bcdDevice */ |
98 |
|
99 |
0x03, /* u8 iManufacturer; */ |
100 |
0x02, /* u8 iProduct; */ |
101 |
0x01, /* u8 iSerialNumber; */ |
102 |
0x01 /* u8 bNumConfigurations; */ |
103 |
}; |
104 |
|
105 |
/* XXX: patch interrupt size */
|
106 |
static const uint8_t qemu_hub_config_descriptor[] = { |
107 |
|
108 |
/* one configuration */
|
109 |
0x09, /* u8 bLength; */ |
110 |
0x02, /* u8 bDescriptorType; Configuration */ |
111 |
0x19, 0x00, /* u16 wTotalLength; */ |
112 |
0x01, /* u8 bNumInterfaces; (1) */ |
113 |
0x01, /* u8 bConfigurationValue; */ |
114 |
0x00, /* u8 iConfiguration; */ |
115 |
0xc0, /* u8 bmAttributes; |
116 |
Bit 7: must be set,
|
117 |
6: Self-powered,
|
118 |
5: Remote wakeup,
|
119 |
4..0: resvd */
|
120 |
0x00, /* u8 MaxPower; */ |
121 |
|
122 |
/* USB 1.1:
|
123 |
* USB 2.0, single TT organization (mandatory):
|
124 |
* one interface, protocol 0
|
125 |
*
|
126 |
* USB 2.0, multiple TT organization (optional):
|
127 |
* two interfaces, protocols 1 (like single TT)
|
128 |
* and 2 (multiple TT mode) ... config is
|
129 |
* sometimes settable
|
130 |
* NOT IMPLEMENTED
|
131 |
*/
|
132 |
|
133 |
/* one interface */
|
134 |
0x09, /* u8 if_bLength; */ |
135 |
0x04, /* u8 if_bDescriptorType; Interface */ |
136 |
0x00, /* u8 if_bInterfaceNumber; */ |
137 |
0x00, /* u8 if_bAlternateSetting; */ |
138 |
0x01, /* u8 if_bNumEndpoints; */ |
139 |
0x09, /* u8 if_bInterfaceClass; HUB_CLASSCODE */ |
140 |
0x00, /* u8 if_bInterfaceSubClass; */ |
141 |
0x00, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */ |
142 |
0x00, /* u8 if_iInterface; */ |
143 |
|
144 |
/* one endpoint (status change endpoint) */
|
145 |
0x07, /* u8 ep_bLength; */ |
146 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
147 |
0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
148 |
0x03, /* u8 ep_bmAttributes; Interrupt */ |
149 |
0x02, 0x00, /* u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */ |
150 |
0xff /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */ |
151 |
}; |
152 |
|
153 |
static const uint8_t qemu_hub_hub_descriptor[] = |
154 |
{ |
155 |
0x00, /* u8 bLength; patched in later */ |
156 |
0x29, /* u8 bDescriptorType; Hub-descriptor */ |
157 |
0x00, /* u8 bNbrPorts; (patched later) */ |
158 |
0x0a, /* u16 wHubCharacteristics; */ |
159 |
0x00, /* (per-port OC, no power switching) */ |
160 |
0x01, /* u8 bPwrOn2pwrGood; 2ms */ |
161 |
0x00 /* u8 bHubContrCurrent; 0 mA */ |
162 |
|
163 |
/* DeviceRemovable and PortPwrCtrlMask patched in later */
|
164 |
}; |
165 |
|
166 |
static void usb_hub_attach(USBPort *port1, USBDevice *dev) |
167 |
{ |
168 |
USBHubState *s = port1->opaque; |
169 |
USBHubPort *port = &s->ports[port1->index]; |
170 |
|
171 |
if (dev) {
|
172 |
if (port->port.dev)
|
173 |
usb_attach(port1, NULL);
|
174 |
|
175 |
port->wPortStatus |= PORT_STAT_CONNECTION; |
176 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
177 |
if (dev->speed == USB_SPEED_LOW)
|
178 |
port->wPortStatus |= PORT_STAT_LOW_SPEED; |
179 |
else
|
180 |
port->wPortStatus &= ~PORT_STAT_LOW_SPEED; |
181 |
port->port.dev = dev; |
182 |
/* send the attach message */
|
183 |
usb_send_msg(dev, USB_MSG_ATTACH); |
184 |
} else {
|
185 |
dev = port->port.dev; |
186 |
if (dev) {
|
187 |
port->wPortStatus &= ~PORT_STAT_CONNECTION; |
188 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
189 |
if (port->wPortStatus & PORT_STAT_ENABLE) {
|
190 |
port->wPortStatus &= ~PORT_STAT_ENABLE; |
191 |
port->wPortChange |= PORT_STAT_C_ENABLE; |
192 |
} |
193 |
/* send the detach message */
|
194 |
usb_send_msg(dev, USB_MSG_DETACH); |
195 |
port->port.dev = NULL;
|
196 |
} |
197 |
} |
198 |
} |
199 |
|
200 |
static void usb_hub_handle_reset(USBDevice *dev) |
201 |
{ |
202 |
/* XXX: do it */
|
203 |
} |
204 |
|
205 |
static int usb_hub_handle_control(USBDevice *dev, int request, int value, |
206 |
int index, int length, uint8_t *data) |
207 |
{ |
208 |
USBHubState *s = (USBHubState *)dev; |
209 |
int ret;
|
210 |
|
211 |
switch(request) {
|
212 |
case DeviceRequest | USB_REQ_GET_STATUS:
|
213 |
data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
214 |
(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
215 |
data[1] = 0x00; |
216 |
ret = 2;
|
217 |
break;
|
218 |
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
219 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
220 |
dev->remote_wakeup = 0;
|
221 |
} else {
|
222 |
goto fail;
|
223 |
} |
224 |
ret = 0;
|
225 |
break;
|
226 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
227 |
if (value == 0 && index != 0x81) { /* clear ep halt */ |
228 |
goto fail;
|
229 |
} |
230 |
ret = 0;
|
231 |
break;
|
232 |
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
233 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
234 |
dev->remote_wakeup = 1;
|
235 |
} else {
|
236 |
goto fail;
|
237 |
} |
238 |
ret = 0;
|
239 |
break;
|
240 |
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
241 |
dev->addr = value; |
242 |
ret = 0;
|
243 |
break;
|
244 |
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
245 |
switch(value >> 8) { |
246 |
case USB_DT_DEVICE:
|
247 |
memcpy(data, qemu_hub_dev_descriptor, |
248 |
sizeof(qemu_hub_dev_descriptor));
|
249 |
ret = sizeof(qemu_hub_dev_descriptor);
|
250 |
break;
|
251 |
case USB_DT_CONFIG:
|
252 |
memcpy(data, qemu_hub_config_descriptor, |
253 |
sizeof(qemu_hub_config_descriptor));
|
254 |
|
255 |
/* status change endpoint size based on number
|
256 |
* of ports */
|
257 |
data[22] = (s->nb_ports + 1 + 7) / 8; |
258 |
|
259 |
ret = sizeof(qemu_hub_config_descriptor);
|
260 |
break;
|
261 |
case USB_DT_STRING:
|
262 |
switch(value & 0xff) { |
263 |
case 0: |
264 |
/* language ids */
|
265 |
data[0] = 4; |
266 |
data[1] = 3; |
267 |
data[2] = 0x09; |
268 |
data[3] = 0x04; |
269 |
ret = 4;
|
270 |
break;
|
271 |
case 1: |
272 |
/* serial number */
|
273 |
ret = set_usb_string(data, "314159");
|
274 |
break;
|
275 |
case 2: |
276 |
/* product description */
|
277 |
ret = set_usb_string(data, "QEMU USB Hub");
|
278 |
break;
|
279 |
case 3: |
280 |
/* vendor description */
|
281 |
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
282 |
break;
|
283 |
default:
|
284 |
goto fail;
|
285 |
} |
286 |
break;
|
287 |
default:
|
288 |
goto fail;
|
289 |
} |
290 |
break;
|
291 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
292 |
data[0] = 1; |
293 |
ret = 1;
|
294 |
break;
|
295 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
296 |
ret = 0;
|
297 |
break;
|
298 |
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
299 |
data[0] = 0; |
300 |
ret = 1;
|
301 |
break;
|
302 |
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
|
303 |
ret = 0;
|
304 |
break;
|
305 |
/* usb specific requests */
|
306 |
case GetHubStatus:
|
307 |
data[0] = 0; |
308 |
data[1] = 0; |
309 |
data[2] = 0; |
310 |
data[3] = 0; |
311 |
ret = 4;
|
312 |
break;
|
313 |
case GetPortStatus:
|
314 |
{ |
315 |
unsigned int n = index - 1; |
316 |
USBHubPort *port; |
317 |
if (n >= s->nb_ports)
|
318 |
goto fail;
|
319 |
port = &s->ports[n]; |
320 |
data[0] = port->wPortStatus;
|
321 |
data[1] = port->wPortStatus >> 8; |
322 |
data[2] = port->wPortChange;
|
323 |
data[3] = port->wPortChange >> 8; |
324 |
ret = 4;
|
325 |
} |
326 |
break;
|
327 |
case SetHubFeature:
|
328 |
case ClearHubFeature:
|
329 |
if (value == 0 || value == 1) { |
330 |
} else {
|
331 |
goto fail;
|
332 |
} |
333 |
ret = 0;
|
334 |
break;
|
335 |
case SetPortFeature:
|
336 |
{ |
337 |
unsigned int n = index - 1; |
338 |
USBHubPort *port; |
339 |
USBDevice *dev; |
340 |
if (n >= s->nb_ports)
|
341 |
goto fail;
|
342 |
port = &s->ports[n]; |
343 |
dev = port->port.dev; |
344 |
switch(value) {
|
345 |
case PORT_SUSPEND:
|
346 |
port->wPortStatus |= PORT_STAT_SUSPEND; |
347 |
break;
|
348 |
case PORT_RESET:
|
349 |
if (dev) {
|
350 |
usb_send_msg(dev, USB_MSG_RESET); |
351 |
port->wPortChange |= PORT_STAT_C_RESET; |
352 |
/* set enable bit */
|
353 |
port->wPortStatus |= PORT_STAT_ENABLE; |
354 |
} |
355 |
break;
|
356 |
case PORT_POWER:
|
357 |
break;
|
358 |
default:
|
359 |
goto fail;
|
360 |
} |
361 |
ret = 0;
|
362 |
} |
363 |
break;
|
364 |
case ClearPortFeature:
|
365 |
{ |
366 |
unsigned int n = index - 1; |
367 |
USBHubPort *port; |
368 |
USBDevice *dev; |
369 |
if (n >= s->nb_ports)
|
370 |
goto fail;
|
371 |
port = &s->ports[n]; |
372 |
dev = port->port.dev; |
373 |
switch(value) {
|
374 |
case PORT_ENABLE:
|
375 |
port->wPortStatus &= ~PORT_STAT_ENABLE; |
376 |
break;
|
377 |
case PORT_C_ENABLE:
|
378 |
port->wPortChange &= ~PORT_STAT_C_ENABLE; |
379 |
break;
|
380 |
case PORT_SUSPEND:
|
381 |
port->wPortStatus &= ~PORT_STAT_SUSPEND; |
382 |
break;
|
383 |
case PORT_C_SUSPEND:
|
384 |
port->wPortChange &= ~PORT_STAT_C_SUSPEND; |
385 |
break;
|
386 |
case PORT_C_CONNECTION:
|
387 |
port->wPortChange &= ~PORT_STAT_C_CONNECTION; |
388 |
break;
|
389 |
case PORT_C_OVERCURRENT:
|
390 |
port->wPortChange &= ~PORT_STAT_C_OVERCURRENT; |
391 |
break;
|
392 |
case PORT_C_RESET:
|
393 |
port->wPortChange &= ~PORT_STAT_C_RESET; |
394 |
break;
|
395 |
default:
|
396 |
goto fail;
|
397 |
} |
398 |
ret = 0;
|
399 |
} |
400 |
break;
|
401 |
case GetHubDescriptor:
|
402 |
{ |
403 |
unsigned int n, limit, var_hub_size = 0; |
404 |
memcpy(data, qemu_hub_hub_descriptor, |
405 |
sizeof(qemu_hub_hub_descriptor));
|
406 |
data[2] = s->nb_ports;
|
407 |
|
408 |
/* fill DeviceRemovable bits */
|
409 |
limit = ((s->nb_ports + 1 + 7) / 8) + 7; |
410 |
for (n = 7; n < limit; n++) { |
411 |
data[n] = 0x00;
|
412 |
var_hub_size++; |
413 |
} |
414 |
|
415 |
/* fill PortPwrCtrlMask bits */
|
416 |
limit = limit + ((s->nb_ports + 7) / 8); |
417 |
for (;n < limit; n++) {
|
418 |
data[n] = 0xff;
|
419 |
var_hub_size++; |
420 |
} |
421 |
|
422 |
ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
|
423 |
data[0] = ret;
|
424 |
break;
|
425 |
} |
426 |
default:
|
427 |
fail:
|
428 |
ret = USB_RET_STALL; |
429 |
break;
|
430 |
} |
431 |
return ret;
|
432 |
} |
433 |
|
434 |
static int usb_hub_handle_data(USBDevice *dev, USBPacket *p) |
435 |
{ |
436 |
USBHubState *s = (USBHubState *)dev; |
437 |
int ret;
|
438 |
|
439 |
switch(p->pid) {
|
440 |
case USB_TOKEN_IN:
|
441 |
if (p->devep == 1) { |
442 |
USBHubPort *port; |
443 |
unsigned int status; |
444 |
int i, n;
|
445 |
n = (s->nb_ports + 1 + 7) / 8; |
446 |
if (p->len == 1) { /* FreeBSD workaround */ |
447 |
n = 1;
|
448 |
} else if (n > p->len) { |
449 |
return USB_RET_BABBLE;
|
450 |
} |
451 |
status = 0;
|
452 |
for(i = 0; i < s->nb_ports; i++) { |
453 |
port = &s->ports[i]; |
454 |
if (port->wPortChange)
|
455 |
status |= (1 << (i + 1)); |
456 |
} |
457 |
if (status != 0) { |
458 |
for(i = 0; i < n; i++) { |
459 |
p->data[i] = status >> (8 * i);
|
460 |
} |
461 |
ret = n; |
462 |
} else {
|
463 |
ret = USB_RET_NAK; /* usb11 11.13.1 */
|
464 |
} |
465 |
} else {
|
466 |
goto fail;
|
467 |
} |
468 |
break;
|
469 |
case USB_TOKEN_OUT:
|
470 |
default:
|
471 |
fail:
|
472 |
ret = USB_RET_STALL; |
473 |
break;
|
474 |
} |
475 |
return ret;
|
476 |
} |
477 |
|
478 |
static int usb_hub_broadcast_packet(USBHubState *s, USBPacket *p) |
479 |
{ |
480 |
USBHubPort *port; |
481 |
USBDevice *dev; |
482 |
int i, ret;
|
483 |
|
484 |
for(i = 0; i < s->nb_ports; i++) { |
485 |
port = &s->ports[i]; |
486 |
dev = port->port.dev; |
487 |
if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
|
488 |
ret = dev->handle_packet(dev, p); |
489 |
if (ret != USB_RET_NODEV) {
|
490 |
return ret;
|
491 |
} |
492 |
} |
493 |
} |
494 |
return USB_RET_NODEV;
|
495 |
} |
496 |
|
497 |
static int usb_hub_handle_packet(USBDevice *dev, USBPacket *p) |
498 |
{ |
499 |
USBHubState *s = (USBHubState *)dev; |
500 |
|
501 |
#if defined(DEBUG) && 0 |
502 |
printf("usb_hub: pid=0x%x\n", pid);
|
503 |
#endif
|
504 |
if (dev->state == USB_STATE_DEFAULT &&
|
505 |
dev->addr != 0 &&
|
506 |
p->devaddr != dev->addr && |
507 |
(p->pid == USB_TOKEN_SETUP || |
508 |
p->pid == USB_TOKEN_OUT || |
509 |
p->pid == USB_TOKEN_IN)) { |
510 |
/* broadcast the packet to the devices */
|
511 |
return usb_hub_broadcast_packet(s, p);
|
512 |
} |
513 |
return usb_generic_handle_packet(dev, p);
|
514 |
} |
515 |
|
516 |
static void usb_hub_handle_destroy(USBDevice *dev) |
517 |
{ |
518 |
USBHubState *s = (USBHubState *)dev; |
519 |
|
520 |
qemu_free(s); |
521 |
} |
522 |
|
523 |
USBDevice *usb_hub_init(int nb_ports)
|
524 |
{ |
525 |
USBHubState *s; |
526 |
USBHubPort *port; |
527 |
int i;
|
528 |
|
529 |
if (nb_ports > MAX_PORTS)
|
530 |
return NULL; |
531 |
s = qemu_mallocz(sizeof(USBHubState));
|
532 |
if (!s)
|
533 |
return NULL; |
534 |
s->dev.speed = USB_SPEED_FULL; |
535 |
s->dev.handle_packet = usb_hub_handle_packet; |
536 |
|
537 |
/* generic USB device init */
|
538 |
s->dev.handle_reset = usb_hub_handle_reset; |
539 |
s->dev.handle_control = usb_hub_handle_control; |
540 |
s->dev.handle_data = usb_hub_handle_data; |
541 |
s->dev.handle_destroy = usb_hub_handle_destroy; |
542 |
|
543 |
pstrcpy(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Hub"); |
544 |
|
545 |
s->nb_ports = nb_ports; |
546 |
for(i = 0; i < s->nb_ports; i++) { |
547 |
port = &s->ports[i]; |
548 |
qemu_register_usb_port(&port->port, s, i, usb_hub_attach); |
549 |
port->wPortStatus = PORT_STAT_POWER; |
550 |
port->wPortChange = 0;
|
551 |
} |
552 |
return (USBDevice *)s;
|
553 |
} |