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
25 #include "qemu/osdep.h"
26 #include "qapi/error.h"
27 #include "qemu/timer.h"
28 #include "trace.h"
29 #include "hw/qdev-properties.h"
30 #include "hw/usb.h"
31 #include "migration/vmstate.h"
32 #include "desc.h"
33 #include "qemu/error-report.h"
34 #include "qemu/module.h"
35 #include "qom/object.h"
36
37 #define MAX_PORTS 8
38
39 typedef struct USBHubPort {
40 USBPort port;
41 uint16_t wPortStatus;
42 uint16_t wPortChange;
43 } USBHubPort;
44
45 struct USBHubState {
46 USBDevice dev;
47 USBEndpoint *intr;
48 uint32_t num_ports;
49 uint32_t usb_version;
50 bool port_power;
51 QEMUTimer *port_timer;
52 USBHubPort ports[MAX_PORTS];
53 };
54
55 #define TYPE_USB_HUB "usb-hub"
56 OBJECT_DECLARE_SIMPLE_TYPE(USBHubState, USB_HUB)
57
58 #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE)
59 #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE)
60 #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR)
61 #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS)
62 #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS)
63 #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE)
64 #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE)
65
66 #define PORT_STAT_CONNECTION 0x0001
67 #define PORT_STAT_ENABLE 0x0002
68 #define PORT_STAT_SUSPEND 0x0004
69 #define PORT_STAT_OVERCURRENT 0x0008
70 #define PORT_STAT_RESET 0x0010
71 #define PORT_STAT_POWER 0x0100
72 #define PORT_STAT_LOW_SPEED 0x0200
73 #define PORT_STAT_HIGH_SPEED 0x0400
74 #define PORT_STAT_TEST 0x0800
75 #define PORT_STAT_INDICATOR 0x1000
76
77 #define PORT_STAT_C_CONNECTION 0x0001
78 #define PORT_STAT_C_ENABLE 0x0002
79 #define PORT_STAT_C_SUSPEND 0x0004
80 #define PORT_STAT_C_OVERCURRENT 0x0008
81 #define PORT_STAT_C_RESET 0x0010
82
83 #define PORT_CONNECTION 0
84 #define PORT_ENABLE 1
85 #define PORT_SUSPEND 2
86 #define PORT_OVERCURRENT 3
87 #define PORT_RESET 4
88 #define PORT_POWER 8
89 #define PORT_LOWSPEED 9
90 #define PORT_HIGHSPEED 10
91 #define PORT_C_CONNECTION 16
92 #define PORT_C_ENABLE 17
93 #define PORT_C_SUSPEND 18
94 #define PORT_C_OVERCURRENT 19
95 #define PORT_C_RESET 20
96 #define PORT_TEST 21
97 #define PORT_INDICATOR 22
98
99 /* same as Linux kernel root hubs */
100
101 enum {
102 STR_MANUFACTURER = 1,
103 STR_PRODUCT,
104 STR_PRODUCT_V2,
105 STR_SERIALNUMBER,
106 };
107
108 static const USBDescStrings desc_strings = {
109 [STR_MANUFACTURER] = "QEMU",
110 [STR_PRODUCT] = "QEMU USB Hub",
111 [STR_PRODUCT_V2] = "QEMU USB v2.0 Hub",
112 [STR_SERIALNUMBER] = "314159",
113 };
114
115 static const USBDescIface desc_iface_hub = {
116 .bInterfaceNumber = 0,
117 .bNumEndpoints = 1,
118 .bInterfaceClass = USB_CLASS_HUB,
119 .eps = (USBDescEndpoint[]) {
120 {
121 .bEndpointAddress = USB_DIR_IN | 0x01,
122 .bmAttributes = USB_ENDPOINT_XFER_INT,
123 .wMaxPacketSize = 1 + DIV_ROUND_UP(MAX_PORTS, 8),
124 .bInterval = 0xff,
125 },
126 }
127 };
128
129 static const USBDescIface desc_iface_hub_v2 = {
130 .bInterfaceNumber = 0,
131 .bNumEndpoints = 1,
132 .bInterfaceClass = USB_CLASS_HUB,
133 .eps = (USBDescEndpoint[]) {
134 {
135 .bEndpointAddress = USB_DIR_IN | 0x01,
136 .bmAttributes = USB_ENDPOINT_XFER_INT,
137 .wMaxPacketSize = 512,
138 .bInterval = 10,
139 },
140 }
141 };
142
143 static const USBDescDevice desc_device_hub = {
144 .bcdUSB = 0x0110,
145 .bDeviceClass = USB_CLASS_HUB,
146 .bMaxPacketSize0 = 8,
147 .bNumConfigurations = 1,
148 .confs = (USBDescConfig[]) {
149 {
150 .bNumInterfaces = 1,
151 .bConfigurationValue = 1,
152 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER |
153 USB_CFG_ATT_WAKEUP,
154 .nif = 1,
155 .ifs = &desc_iface_hub,
156 },
157 },
158 };
159
160 static const USBDescDevice desc_device_hub_v2 = {
161 .bcdUSB = 0x0200,
162 .bDeviceClass = USB_CLASS_HUB,
163 .bMaxPacketSize0 = 64,
164 .bNumConfigurations = 1,
165 .confs = (USBDescConfig[]) {
166 {
167 .bNumInterfaces = 1,
168 .bConfigurationValue = 1,
169 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER |
170 USB_CFG_ATT_WAKEUP,
171 .nif = 1,
172 .ifs = &desc_iface_hub_v2,
173 },
174 },
175 };
176
177 static const USBDesc desc_hub = {
178 .id = {
179 .idVendor = 0x0409,
180 .idProduct = 0x55aa,
181 .bcdDevice = 0x0101,
182 .iManufacturer = STR_MANUFACTURER,
183 .iProduct = STR_PRODUCT,
184 .iSerialNumber = STR_SERIALNUMBER,
185 },
186 .full = &desc_device_hub,
187 .str = desc_strings,
188 };
189
190 static const USBDesc desc_hub_v2 = {
191 .id = {
192 .idVendor = 0x0409,
193 .idProduct = 0x55aa,
194 .bcdDevice = 0x0201,
195 .iManufacturer = STR_MANUFACTURER,
196 .iProduct = STR_PRODUCT_V2,
197 .iSerialNumber = STR_SERIALNUMBER,
198 },
199 .full = &desc_device_hub,
200 .high = &desc_device_hub_v2,
201 .str = desc_strings,
202 };
203
204 static const uint8_t qemu_hub_hub_descriptor[] =
205 {
206 0x00, /* u8 bLength; patched in later */
207 0x29, /* u8 bDescriptorType; Hub-descriptor */
208 0x00, /* u8 bNbrPorts; (patched later) */
209 0x0a, /* u16 wHubCharacteristics; */
210 0x00, /* (per-port OC, no power switching) */
211 0x01, /* u8 bPwrOn2pwrGood; 2ms */
212 0x00 /* u8 bHubContrCurrent; 0 mA */
213
214 /* DeviceRemovable and PortPwrCtrlMask patched in later */
215 };
216
usb_hub_port_change(USBHubPort * port,uint16_t status)217 static bool usb_hub_port_change(USBHubPort *port, uint16_t status)
218 {
219 bool notify = false;
220
221 if (status & 0x1f) {
222 port->wPortChange |= status;
223 notify = true;
224 }
225 return notify;
226 }
227
usb_hub_port_set(USBHubPort * port,uint16_t status)228 static bool usb_hub_port_set(USBHubPort *port, uint16_t status)
229 {
230 if (port->wPortStatus & status) {
231 return false;
232 }
233 port->wPortStatus |= status;
234 return usb_hub_port_change(port, status);
235 }
236
usb_hub_port_clear(USBHubPort * port,uint16_t status)237 static bool usb_hub_port_clear(USBHubPort *port, uint16_t status)
238 {
239 if (!(port->wPortStatus & status)) {
240 return false;
241 }
242 port->wPortStatus &= ~status;
243 return usb_hub_port_change(port, status);
244 }
245
usb_hub_port_update(USBHubState * s,USBHubPort * port)246 static bool usb_hub_port_update(USBHubState *s, USBHubPort *port)
247 {
248 bool notify = false;
249
250 if (port->port.dev && port->port.dev->attached) {
251 notify = usb_hub_port_set(port, PORT_STAT_CONNECTION);
252 if (s->usb_version == 2 && port->port.dev->speed == USB_SPEED_HIGH) {
253 usb_hub_port_clear(port, PORT_STAT_LOW_SPEED);
254 usb_hub_port_set(port, PORT_STAT_HIGH_SPEED);
255 } else if (port->port.dev->speed == USB_SPEED_LOW) {
256 usb_hub_port_clear(port, PORT_STAT_HIGH_SPEED);
257 usb_hub_port_set(port, PORT_STAT_LOW_SPEED);
258 } else {
259 usb_hub_port_clear(port, PORT_STAT_HIGH_SPEED);
260 usb_hub_port_clear(port, PORT_STAT_LOW_SPEED);
261 }
262 }
263 return notify;
264 }
265
usb_hub_port_update_timer(void * opaque)266 static void usb_hub_port_update_timer(void *opaque)
267 {
268 USBHubState *s = opaque;
269 bool notify = false;
270 int i;
271
272 for (i = 0; i < s->num_ports; i++) {
273 notify |= usb_hub_port_update(s, &s->ports[i]);
274 }
275 if (notify) {
276 usb_wakeup(s->intr, 0);
277 }
278 }
279
usb_hub_attach(USBPort * port1)280 static void usb_hub_attach(USBPort *port1)
281 {
282 USBHubState *s = port1->opaque;
283 USBHubPort *port = &s->ports[port1->index];
284
285 trace_usb_hub_attach(s->dev.addr, port1->index + 1);
286 usb_hub_port_update(s, port);
287 usb_wakeup(s->intr, 0);
288 }
289
usb_hub_detach(USBPort * port1)290 static void usb_hub_detach(USBPort *port1)
291 {
292 USBHubState *s = port1->opaque;
293 USBHubPort *port = &s->ports[port1->index];
294
295 trace_usb_hub_detach(s->dev.addr, port1->index + 1);
296 usb_wakeup(s->intr, 0);
297
298 /* Let upstream know the device on this port is gone */
299 s->dev.port->ops->child_detach(s->dev.port, port1->dev);
300
301 usb_hub_port_clear(port, PORT_STAT_CONNECTION);
302 usb_hub_port_clear(port, PORT_STAT_ENABLE);
303 usb_hub_port_clear(port, PORT_STAT_SUSPEND);
304 usb_wakeup(s->intr, 0);
305 }
306
usb_hub_child_detach(USBPort * port1,USBDevice * child)307 static void usb_hub_child_detach(USBPort *port1, USBDevice *child)
308 {
309 USBHubState *s = port1->opaque;
310
311 /* Pass along upstream */
312 s->dev.port->ops->child_detach(s->dev.port, child);
313 }
314
usb_hub_wakeup(USBPort * port1)315 static void usb_hub_wakeup(USBPort *port1)
316 {
317 USBHubState *s = port1->opaque;
318 USBHubPort *port = &s->ports[port1->index];
319
320 if (usb_hub_port_clear(port, PORT_STAT_SUSPEND)) {
321 usb_wakeup(s->intr, 0);
322 }
323 }
324
usb_hub_complete(USBPort * port,USBPacket * packet)325 static void usb_hub_complete(USBPort *port, USBPacket *packet)
326 {
327 USBHubState *s = port->opaque;
328
329 /*
330 * Just pass it along upstream for now.
331 *
332 * If we ever implement usb 2.0 split transactions this will
333 * become a little more complicated ...
334 *
335 * Can't use usb_packet_complete() here because packet->owner is
336 * cleared already, go call the ->complete() callback directly
337 * instead.
338 */
339 s->dev.port->ops->complete(s->dev.port, packet);
340 }
341
usb_hub_find_device(USBDevice * dev,uint8_t addr)342 static USBDevice *usb_hub_find_device(USBDevice *dev, uint8_t addr)
343 {
344 USBHubState *s = USB_HUB(dev);
345 USBHubPort *port;
346 USBDevice *downstream;
347 int i;
348
349 for (i = 0; i < s->num_ports; i++) {
350 port = &s->ports[i];
351 if (!(port->wPortStatus & PORT_STAT_ENABLE)) {
352 continue;
353 }
354 downstream = usb_find_device(&port->port, addr);
355 if (downstream != NULL) {
356 return downstream;
357 }
358 }
359 return NULL;
360 }
361
usb_hub_handle_reset(USBDevice * dev)362 static void usb_hub_handle_reset(USBDevice *dev)
363 {
364 USBHubState *s = USB_HUB(dev);
365 USBHubPort *port;
366 int i;
367
368 trace_usb_hub_reset(s->dev.addr);
369 for (i = 0; i < s->num_ports; i++) {
370 port = s->ports + i;
371 port->wPortStatus = 0;
372 port->wPortChange = 0;
373 usb_hub_port_set(port, PORT_STAT_POWER);
374 usb_hub_port_update(s, port);
375 }
376 }
377
feature_name(int feature)378 static const char *feature_name(int feature)
379 {
380 static const char *name[] = {
381 [PORT_CONNECTION] = "connection",
382 [PORT_ENABLE] = "enable",
383 [PORT_SUSPEND] = "suspend",
384 [PORT_OVERCURRENT] = "overcurrent",
385 [PORT_RESET] = "reset",
386 [PORT_POWER] = "power",
387 [PORT_LOWSPEED] = "lowspeed",
388 [PORT_HIGHSPEED] = "highspeed",
389 [PORT_C_CONNECTION] = "change-connection",
390 [PORT_C_ENABLE] = "change-enable",
391 [PORT_C_SUSPEND] = "change-suspend",
392 [PORT_C_OVERCURRENT] = "change-overcurrent",
393 [PORT_C_RESET] = "change-reset",
394 [PORT_TEST] = "test",
395 [PORT_INDICATOR] = "indicator",
396 };
397 if (feature < 0 || feature >= ARRAY_SIZE(name)) {
398 return "?";
399 }
400 return name[feature] ?: "?";
401 }
402
usb_hub_handle_control(USBDevice * dev,USBPacket * p,int request,int value,int index,int length,uint8_t * data)403 static void usb_hub_handle_control(USBDevice *dev, USBPacket *p,
404 int request, int value, int index, int length, uint8_t *data)
405 {
406 USBHubState *s = (USBHubState *)dev;
407 int ret;
408
409 trace_usb_hub_control(s->dev.addr, request, value, index, length);
410
411 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
412 if (ret >= 0) {
413 return;
414 }
415
416 switch(request) {
417 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
418 if (value == 0 && index != 0x81) { /* clear ep halt */
419 goto fail;
420 }
421 break;
422 /* usb specific requests */
423 case GetHubStatus:
424 data[0] = 0;
425 data[1] = 0;
426 data[2] = 0;
427 data[3] = 0;
428 p->actual_length = 4;
429 break;
430 case GetPortStatus:
431 {
432 unsigned int n = index - 1;
433 USBHubPort *port;
434 if (n >= s->num_ports) {
435 goto fail;
436 }
437 port = &s->ports[n];
438 trace_usb_hub_get_port_status(s->dev.addr, index,
439 port->wPortStatus,
440 port->wPortChange);
441 data[0] = port->wPortStatus;
442 data[1] = port->wPortStatus >> 8;
443 data[2] = port->wPortChange;
444 data[3] = port->wPortChange >> 8;
445 p->actual_length = 4;
446 }
447 break;
448 case SetHubFeature:
449 case ClearHubFeature:
450 if (value != 0 && value != 1) {
451 goto fail;
452 }
453 break;
454 case SetPortFeature:
455 {
456 unsigned int n = index - 1;
457 USBHubPort *port;
458 USBDevice *pdev;
459
460 trace_usb_hub_set_port_feature(s->dev.addr, index,
461 feature_name(value));
462
463 if (n >= s->num_ports) {
464 goto fail;
465 }
466 port = &s->ports[n];
467 pdev = port->port.dev;
468 switch(value) {
469 case PORT_SUSPEND:
470 port->wPortStatus |= PORT_STAT_SUSPEND;
471 break;
472 case PORT_RESET:
473 usb_hub_port_set(port, PORT_STAT_RESET);
474 usb_hub_port_clear(port, PORT_STAT_RESET);
475 if (pdev && pdev->attached) {
476 usb_device_reset(pdev);
477 usb_hub_port_set(port, PORT_STAT_ENABLE);
478 }
479 usb_wakeup(s->intr, 0);
480 break;
481 case PORT_POWER:
482 if (s->port_power) {
483 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
484 usb_hub_port_set(port, PORT_STAT_POWER);
485 timer_mod(s->port_timer, now + 5000000); /* 5 ms */
486 }
487 break;
488 default:
489 goto fail;
490 }
491 }
492 break;
493 case ClearPortFeature:
494 {
495 unsigned int n = index - 1;
496 USBHubPort *port;
497
498 trace_usb_hub_clear_port_feature(s->dev.addr, index,
499 feature_name(value));
500
501 if (n >= s->num_ports) {
502 goto fail;
503 }
504 port = &s->ports[n];
505 switch(value) {
506 case PORT_ENABLE:
507 port->wPortStatus &= ~PORT_STAT_ENABLE;
508 break;
509 case PORT_C_ENABLE:
510 port->wPortChange &= ~PORT_STAT_C_ENABLE;
511 break;
512 case PORT_SUSPEND:
513 usb_hub_port_clear(port, PORT_STAT_SUSPEND);
514 break;
515 case PORT_C_SUSPEND:
516 port->wPortChange &= ~PORT_STAT_C_SUSPEND;
517 break;
518 case PORT_C_CONNECTION:
519 port->wPortChange &= ~PORT_STAT_C_CONNECTION;
520 break;
521 case PORT_C_OVERCURRENT:
522 port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
523 break;
524 case PORT_C_RESET:
525 port->wPortChange &= ~PORT_STAT_C_RESET;
526 break;
527 case PORT_POWER:
528 if (s->port_power) {
529 usb_hub_port_clear(port, PORT_STAT_POWER);
530 usb_hub_port_clear(port, PORT_STAT_CONNECTION);
531 usb_hub_port_clear(port, PORT_STAT_ENABLE);
532 usb_hub_port_clear(port, PORT_STAT_SUSPEND);
533 port->wPortChange = 0;
534 }
535 break;
536 default:
537 goto fail;
538 }
539 }
540 break;
541 case GetHubDescriptor:
542 {
543 unsigned int n, limit, var_hub_size = 0;
544 memcpy(data, qemu_hub_hub_descriptor,
545 sizeof(qemu_hub_hub_descriptor));
546 data[2] = s->num_ports;
547
548 if (s->port_power) {
549 data[3] &= ~0x03;
550 data[3] |= 0x01;
551 }
552
553 /* fill DeviceRemovable bits */
554 limit = DIV_ROUND_UP(s->num_ports + 1, 8) + 7;
555 for (n = 7; n < limit; n++) {
556 data[n] = 0x00;
557 var_hub_size++;
558 }
559
560 /* fill PortPwrCtrlMask bits */
561 limit = limit + DIV_ROUND_UP(s->num_ports, 8);
562 for (;n < limit; n++) {
563 data[n] = 0xff;
564 var_hub_size++;
565 }
566
567 p->actual_length = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
568 data[0] = p->actual_length;
569 break;
570 }
571 default:
572 fail:
573 p->status = USB_RET_STALL;
574 break;
575 }
576 }
577
usb_hub_handle_data(USBDevice * dev,USBPacket * p)578 static void usb_hub_handle_data(USBDevice *dev, USBPacket *p)
579 {
580 USBHubState *s = (USBHubState *)dev;
581
582 switch(p->pid) {
583 case USB_TOKEN_IN:
584 if (p->ep->nr == 1) {
585 USBHubPort *port;
586 unsigned int status;
587 uint8_t buf[4];
588 int i, n;
589 n = DIV_ROUND_UP(s->num_ports + 1, 8);
590 if (p->iov.size == 1) { /* FreeBSD workaround */
591 n = 1;
592 } else if (n > p->iov.size) {
593 p->status = USB_RET_BABBLE;
594 return;
595 }
596 status = 0;
597 for (i = 0; i < s->num_ports; i++) {
598 port = &s->ports[i];
599 if (port->wPortChange)
600 status |= (1 << (i + 1));
601 }
602 if (status != 0) {
603 trace_usb_hub_status_report(s->dev.addr, status);
604 for(i = 0; i < n; i++) {
605 buf[i] = status >> (8 * i);
606 }
607 usb_packet_copy(p, buf, n);
608 } else {
609 p->status = USB_RET_NAK; /* usb11 11.13.1 */
610 }
611 } else {
612 goto fail;
613 }
614 break;
615 case USB_TOKEN_OUT:
616 default:
617 fail:
618 p->status = USB_RET_STALL;
619 break;
620 }
621 }
622
usb_hub_unrealize(USBDevice * dev)623 static void usb_hub_unrealize(USBDevice *dev)
624 {
625 USBHubState *s = (USBHubState *)dev;
626 int i;
627
628 for (i = 0; i < s->num_ports; i++) {
629 usb_unregister_port(usb_bus_from_device(dev),
630 &s->ports[i].port);
631 }
632
633 timer_free(s->port_timer);
634 }
635
636 static USBPortOps usb_hub_port_ops = {
637 .attach = usb_hub_attach,
638 .detach = usb_hub_detach,
639 .child_detach = usb_hub_child_detach,
640 .wakeup = usb_hub_wakeup,
641 .complete = usb_hub_complete,
642 };
643
usb_hub_realize(USBDevice * dev,Error ** errp)644 static void usb_hub_realize(USBDevice *dev, Error **errp)
645 {
646 USBHubState *s = USB_HUB(dev);
647 USBHubPort *port;
648 int i;
649
650 switch (s->usb_version) {
651 case 1:
652 dev->usb_desc = &desc_hub;
653 break;
654 case 2:
655 dev->usb_desc = &desc_hub_v2;
656 break;
657 default:
658 error_setg(errp, "Unsupported usb version %d for usb hub",
659 s->usb_version);
660 return;
661 }
662
663 if (s->num_ports < 1 || s->num_ports > MAX_PORTS) {
664 error_setg(errp, "num_ports (%d) out of range (1..%d)",
665 s->num_ports, MAX_PORTS);
666 return;
667 }
668
669 if (dev->port->hubcount == 5) {
670 error_setg(errp, "usb hub chain too deep");
671 return;
672 }
673
674 usb_desc_create_serial(dev);
675 usb_desc_init(dev);
676 s->port_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
677 usb_hub_port_update_timer, s);
678 s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
679 for (i = 0; i < s->num_ports; i++) {
680 port = &s->ports[i];
681 usb_register_port(usb_bus_from_device(dev),
682 &port->port, s, i, &usb_hub_port_ops,
683 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL |
684 ((s->usb_version == 2) ? USB_SPEED_MASK_HIGH : 0));
685 usb_port_location(&port->port, dev->port, i+1);
686 }
687 usb_hub_handle_reset(dev);
688 }
689
690 static const VMStateDescription vmstate_usb_hub_port = {
691 .name = "usb-hub-port",
692 .version_id = 1,
693 .minimum_version_id = 1,
694 .fields = (const VMStateField[]) {
695 VMSTATE_UINT16(wPortStatus, USBHubPort),
696 VMSTATE_UINT16(wPortChange, USBHubPort),
697 VMSTATE_END_OF_LIST()
698 }
699 };
700
usb_hub_port_timer_needed(void * opaque)701 static bool usb_hub_port_timer_needed(void *opaque)
702 {
703 USBHubState *s = opaque;
704
705 return s->port_power;
706 }
707
708 static const VMStateDescription vmstate_usb_hub_port_timer = {
709 .name = "usb-hub/port-timer",
710 .version_id = 1,
711 .minimum_version_id = 1,
712 .needed = usb_hub_port_timer_needed,
713 .fields = (const VMStateField[]) {
714 VMSTATE_TIMER_PTR(port_timer, USBHubState),
715 VMSTATE_END_OF_LIST()
716 },
717 };
718
719 static const VMStateDescription vmstate_usb_hub = {
720 .name = "usb-hub",
721 .version_id = 2,
722 .minimum_version_id = 1,
723 .fields = (const VMStateField[]) {
724 VMSTATE_USB_DEVICE(dev, USBHubState),
725 VMSTATE_STRUCT_ARRAY(ports, USBHubState, MAX_PORTS, 0,
726 vmstate_usb_hub_port, USBHubPort),
727 VMSTATE_END_OF_LIST()
728 },
729 .subsections = (const VMStateDescription * const []) {
730 &vmstate_usb_hub_port_timer,
731 NULL
732 }
733 };
734
735 static Property usb_hub_properties[] = {
736 DEFINE_PROP_UINT32("ports", USBHubState, num_ports, 8),
737 DEFINE_PROP_BOOL("port-power", USBHubState, port_power, false),
738 DEFINE_PROP_UINT32("usb_version", USBHubState, usb_version, 1),
739 DEFINE_PROP_END_OF_LIST(),
740 };
741
usb_hub_class_initfn(ObjectClass * klass,void * data)742 static void usb_hub_class_initfn(ObjectClass *klass, void *data)
743 {
744 DeviceClass *dc = DEVICE_CLASS(klass);
745 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
746
747 uc->realize = usb_hub_realize;
748 uc->product_desc = "QEMU USB Hub";
749 uc->find_device = usb_hub_find_device;
750 uc->handle_reset = usb_hub_handle_reset;
751 uc->handle_control = usb_hub_handle_control;
752 uc->handle_data = usb_hub_handle_data;
753 uc->unrealize = usb_hub_unrealize;
754 uc->handle_attach = usb_desc_attach;
755 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
756 dc->fw_name = "hub";
757 dc->vmsd = &vmstate_usb_hub;
758 device_class_set_props(dc, usb_hub_properties);
759 }
760
761 static const TypeInfo hub_info = {
762 .name = TYPE_USB_HUB,
763 .parent = TYPE_USB_DEVICE,
764 .instance_size = sizeof(USBHubState),
765 .class_init = usb_hub_class_initfn,
766 };
767
usb_hub_register_types(void)768 static void usb_hub_register_types(void)
769 {
770 type_register_static(&hub_info);
771 }
772
773 type_init(usb_hub_register_types)
774