1 /*
2 * FTDI FT232BM Device emulation
3 *
4 * Copyright (c) 2006 CodeSourcery.
5 * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
6 * Written by Paul Brook, reused for FTDI by Samuel Thibault
7 *
8 * This code is licensed under the LGPL.
9 */
10
11 #include "qemu/osdep.h"
12 #include "qapi/error.h"
13 #include "qemu/cutils.h"
14 #include "qemu/error-report.h"
15 #include "qemu/module.h"
16 #include "hw/qdev-properties.h"
17 #include "hw/qdev-properties-system.h"
18 #include "hw/usb.h"
19 #include "migration/vmstate.h"
20 #include "desc.h"
21 #include "chardev/char-serial.h"
22 #include "chardev/char-fe.h"
23 #include "qom/object.h"
24 #include "trace.h"
25
26
27 #define RECV_BUF (512 - (2 * 8))
28
29 /* Commands */
30 #define FTDI_RESET 0
31 #define FTDI_SET_MDM_CTRL 1
32 #define FTDI_SET_FLOW_CTRL 2
33 #define FTDI_SET_BAUD 3
34 #define FTDI_SET_DATA 4
35 #define FTDI_GET_MDM_ST 5
36 #define FTDI_SET_EVENT_CHR 6
37 #define FTDI_SET_ERROR_CHR 7
38 #define FTDI_SET_LATENCY 9
39 #define FTDI_GET_LATENCY 10
40
41 /* RESET */
42
43 #define FTDI_RESET_SIO 0
44 #define FTDI_RESET_RX 1
45 #define FTDI_RESET_TX 2
46
47 /* SET_MDM_CTRL */
48
49 #define FTDI_DTR 1
50 #define FTDI_SET_DTR (FTDI_DTR << 8)
51 #define FTDI_RTS 2
52 #define FTDI_SET_RTS (FTDI_RTS << 8)
53
54 /* SET_FLOW_CTRL */
55
56 #define FTDI_NO_HS 0
57 #define FTDI_RTS_CTS_HS 1
58 #define FTDI_DTR_DSR_HS 2
59 #define FTDI_XON_XOFF_HS 4
60
61 /* SET_DATA */
62
63 #define FTDI_PARITY (0x7 << 8)
64 #define FTDI_ODD (0x1 << 8)
65 #define FTDI_EVEN (0x2 << 8)
66 #define FTDI_MARK (0x3 << 8)
67 #define FTDI_SPACE (0x4 << 8)
68
69 #define FTDI_STOP (0x3 << 11)
70 #define FTDI_STOP1 (0x0 << 11)
71 #define FTDI_STOP15 (0x1 << 11)
72 #define FTDI_STOP2 (0x2 << 11)
73
74 /* GET_MDM_ST */
75 /* TODO: should be sent every 40ms */
76 #define FTDI_CTS (1 << 4) /* CTS line status */
77 #define FTDI_DSR (1 << 5) /* DSR line status */
78 #define FTDI_RI (1 << 6) /* RI line status */
79 #define FTDI_RLSD (1 << 7) /* Receive Line Signal Detect */
80
81 /* Status */
82
83 #define FTDI_DR (1 << 0) /* Data Ready */
84 #define FTDI_OE (1 << 1) /* Overrun Err */
85 #define FTDI_PE (1 << 2) /* Parity Err */
86 #define FTDI_FE (1 << 3) /* Framing Err */
87 #define FTDI_BI (1 << 4) /* Break Interrupt */
88 #define FTDI_THRE (1 << 5) /* Transmitter Holding Register */
89 #define FTDI_TEMT (1 << 6) /* Transmitter Empty */
90 #define FTDI_FIFO (1 << 7) /* Error in FIFO */
91
92 struct USBSerialState {
93 USBDevice dev;
94
95 USBEndpoint *intr;
96 uint8_t recv_buf[RECV_BUF];
97 uint16_t recv_ptr;
98 uint16_t recv_used;
99 uint8_t event_chr;
100 uint8_t error_chr;
101 uint8_t event_trigger;
102 bool always_plugged;
103 uint8_t flow_control;
104 uint8_t xon;
105 uint8_t xoff;
106 QEMUSerialSetParams params;
107 int latency; /* ms */
108 CharBackend cs;
109 };
110
111 #define TYPE_USB_SERIAL "usb-serial-dev"
112 OBJECT_DECLARE_SIMPLE_TYPE(USBSerialState, USB_SERIAL)
113
114 enum {
115 STR_MANUFACTURER = 1,
116 STR_PRODUCT_SERIAL,
117 STR_PRODUCT_BRAILLE,
118 STR_SERIALNUMBER,
119 };
120
121 static const USBDescStrings desc_strings = {
122 [STR_MANUFACTURER] = "QEMU",
123 [STR_PRODUCT_SERIAL] = "QEMU USB SERIAL",
124 [STR_PRODUCT_BRAILLE] = "QEMU USB BAUM BRAILLE",
125 [STR_SERIALNUMBER] = "1",
126 };
127
128 static const USBDescIface desc_iface0 = {
129 .bInterfaceNumber = 0,
130 .bNumEndpoints = 2,
131 .bInterfaceClass = 0xff,
132 .bInterfaceSubClass = 0xff,
133 .bInterfaceProtocol = 0xff,
134 .eps = (USBDescEndpoint[]) {
135 {
136 .bEndpointAddress = USB_DIR_IN | 0x01,
137 .bmAttributes = USB_ENDPOINT_XFER_BULK,
138 .wMaxPacketSize = 64,
139 },{
140 .bEndpointAddress = USB_DIR_OUT | 0x02,
141 .bmAttributes = USB_ENDPOINT_XFER_BULK,
142 .wMaxPacketSize = 64,
143 },
144 }
145 };
146
147 static const USBDescDevice desc_device = {
148 .bcdUSB = 0x0200,
149 .bMaxPacketSize0 = 8,
150 .bNumConfigurations = 1,
151 .confs = (USBDescConfig[]) {
152 {
153 .bNumInterfaces = 1,
154 .bConfigurationValue = 1,
155 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP,
156 .bMaxPower = 50,
157 .nif = 1,
158 .ifs = &desc_iface0,
159 },
160 },
161 };
162
163 static const USBDesc desc_serial = {
164 .id = {
165 .idVendor = 0x0403,
166 .idProduct = 0x6001,
167 .bcdDevice = 0x0400,
168 .iManufacturer = STR_MANUFACTURER,
169 .iProduct = STR_PRODUCT_SERIAL,
170 .iSerialNumber = STR_SERIALNUMBER,
171 },
172 .full = &desc_device,
173 .str = desc_strings,
174 };
175
176 static const USBDesc desc_braille = {
177 .id = {
178 .idVendor = 0x0403,
179 .idProduct = 0xfe72,
180 .bcdDevice = 0x0400,
181 .iManufacturer = STR_MANUFACTURER,
182 .iProduct = STR_PRODUCT_BRAILLE,
183 .iSerialNumber = STR_SERIALNUMBER,
184 },
185 .full = &desc_device,
186 .str = desc_strings,
187 };
188
usb_serial_set_flow_control(USBSerialState * s,uint8_t flow_control)189 static void usb_serial_set_flow_control(USBSerialState *s,
190 uint8_t flow_control)
191 {
192 USBDevice *dev = USB_DEVICE(s);
193 USBBus *bus = usb_bus_from_device(dev);
194
195 /* TODO: ioctl */
196 s->flow_control = flow_control;
197 trace_usb_serial_set_flow_control(bus->busnr, dev->addr, flow_control);
198 }
199
usb_serial_set_xonxoff(USBSerialState * s,int xonxoff)200 static void usb_serial_set_xonxoff(USBSerialState *s, int xonxoff)
201 {
202 USBDevice *dev = USB_DEVICE(s);
203 USBBus *bus = usb_bus_from_device(dev);
204
205 s->xon = xonxoff & 0xff;
206 s->xoff = (xonxoff >> 8) & 0xff;
207
208 trace_usb_serial_set_xonxoff(bus->busnr, dev->addr, s->xon, s->xoff);
209 }
210
usb_serial_reset(USBSerialState * s)211 static void usb_serial_reset(USBSerialState *s)
212 {
213 s->event_chr = 0x0d;
214 s->event_trigger = 0;
215 s->recv_ptr = 0;
216 s->recv_used = 0;
217 /* TODO: purge in char driver */
218 usb_serial_set_flow_control(s, FTDI_NO_HS);
219 }
220
usb_serial_handle_reset(USBDevice * dev)221 static void usb_serial_handle_reset(USBDevice *dev)
222 {
223 USBSerialState *s = USB_SERIAL(dev);
224 USBBus *bus = usb_bus_from_device(dev);
225
226 trace_usb_serial_reset(bus->busnr, dev->addr);
227
228 usb_serial_reset(s);
229 /* TODO: Reset char device, send BREAK? */
230 }
231
usb_get_modem_lines(USBSerialState * s)232 static uint8_t usb_get_modem_lines(USBSerialState *s)
233 {
234 int flags;
235 uint8_t ret;
236
237 if (qemu_chr_fe_ioctl(&s->cs,
238 CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP) {
239 return FTDI_CTS | FTDI_DSR | FTDI_RLSD;
240 }
241
242 ret = 0;
243 if (flags & CHR_TIOCM_CTS) {
244 ret |= FTDI_CTS;
245 }
246 if (flags & CHR_TIOCM_DSR) {
247 ret |= FTDI_DSR;
248 }
249 if (flags & CHR_TIOCM_RI) {
250 ret |= FTDI_RI;
251 }
252 if (flags & CHR_TIOCM_CAR) {
253 ret |= FTDI_RLSD;
254 }
255
256 return ret;
257 }
258
usb_serial_handle_control(USBDevice * dev,USBPacket * p,int request,int value,int index,int length,uint8_t * data)259 static void usb_serial_handle_control(USBDevice *dev, USBPacket *p,
260 int request, int value, int index,
261 int length, uint8_t *data)
262 {
263 USBSerialState *s = USB_SERIAL(dev);
264 USBBus *bus = usb_bus_from_device(dev);
265 int ret;
266
267 trace_usb_serial_handle_control(bus->busnr, dev->addr, request, value);
268
269 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
270 if (ret >= 0) {
271 return;
272 }
273
274 switch (request) {
275 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
276 break;
277
278 /* Class specific requests. */
279 case VendorDeviceOutRequest | FTDI_RESET:
280 switch (value) {
281 case FTDI_RESET_SIO:
282 usb_serial_reset(s);
283 break;
284 case FTDI_RESET_RX:
285 s->recv_ptr = 0;
286 s->recv_used = 0;
287 /* TODO: purge from char device */
288 break;
289 case FTDI_RESET_TX:
290 /* TODO: purge from char device */
291 break;
292 }
293 break;
294 case VendorDeviceOutRequest | FTDI_SET_MDM_CTRL:
295 {
296 static int flags;
297 qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_GET_TIOCM, &flags);
298 if (value & FTDI_SET_RTS) {
299 if (value & FTDI_RTS) {
300 flags |= CHR_TIOCM_RTS;
301 } else {
302 flags &= ~CHR_TIOCM_RTS;
303 }
304 }
305 if (value & FTDI_SET_DTR) {
306 if (value & FTDI_DTR) {
307 flags |= CHR_TIOCM_DTR;
308 } else {
309 flags &= ~CHR_TIOCM_DTR;
310 }
311 }
312 qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_SET_TIOCM, &flags);
313 break;
314 }
315 case VendorDeviceOutRequest | FTDI_SET_FLOW_CTRL: {
316 uint8_t flow_control = index >> 8;
317
318 usb_serial_set_flow_control(s, flow_control);
319 if (flow_control & FTDI_XON_XOFF_HS) {
320 usb_serial_set_xonxoff(s, value);
321 }
322 break;
323 }
324 case VendorDeviceOutRequest | FTDI_SET_BAUD: {
325 static const int subdivisors8[8] = { 0, 4, 2, 1, 3, 5, 6, 7 };
326 int subdivisor8 = subdivisors8[((value & 0xc000) >> 14)
327 | ((index & 1) << 2)];
328 int divisor = value & 0x3fff;
329
330 /* chip special cases */
331 if (divisor == 1 && subdivisor8 == 0) {
332 subdivisor8 = 4;
333 }
334 if (divisor == 0 && subdivisor8 == 0) {
335 divisor = 1;
336 }
337
338 s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8);
339 trace_usb_serial_set_baud(bus->busnr, dev->addr, s->params.speed);
340 qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
341 break;
342 }
343 case VendorDeviceOutRequest | FTDI_SET_DATA:
344 switch (value & 0xff) {
345 case 7:
346 s->params.data_bits = 7;
347 break;
348 case 8:
349 s->params.data_bits = 8;
350 break;
351 default:
352 /*
353 * According to a comment in Linux's ftdi_sio.c original FTDI
354 * chips fall back to 8 data bits for unsupported data_bits
355 */
356 trace_usb_serial_unsupported_data_bits(bus->busnr, dev->addr,
357 value & 0xff);
358 s->params.data_bits = 8;
359 }
360
361 switch (value & FTDI_PARITY) {
362 case 0:
363 s->params.parity = 'N';
364 break;
365 case FTDI_ODD:
366 s->params.parity = 'O';
367 break;
368 case FTDI_EVEN:
369 s->params.parity = 'E';
370 break;
371 default:
372 trace_usb_serial_unsupported_parity(bus->busnr, dev->addr,
373 value & FTDI_PARITY);
374 goto fail;
375 }
376
377 switch (value & FTDI_STOP) {
378 case FTDI_STOP1:
379 s->params.stop_bits = 1;
380 break;
381 case FTDI_STOP2:
382 s->params.stop_bits = 2;
383 break;
384 default:
385 trace_usb_serial_unsupported_stopbits(bus->busnr, dev->addr,
386 value & FTDI_STOP);
387 goto fail;
388 }
389
390 trace_usb_serial_set_data(bus->busnr, dev->addr, s->params.parity,
391 s->params.data_bits, s->params.stop_bits);
392 qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
393 /* TODO: TX ON/OFF */
394 break;
395 case VendorDeviceRequest | FTDI_GET_MDM_ST:
396 data[0] = usb_get_modem_lines(s) | 1;
397 data[1] = FTDI_THRE | FTDI_TEMT;
398 p->actual_length = 2;
399 break;
400 case VendorDeviceOutRequest | FTDI_SET_EVENT_CHR:
401 /* TODO: handle it */
402 s->event_chr = value;
403 break;
404 case VendorDeviceOutRequest | FTDI_SET_ERROR_CHR:
405 /* TODO: handle it */
406 s->error_chr = value;
407 break;
408 case VendorDeviceOutRequest | FTDI_SET_LATENCY:
409 s->latency = value;
410 break;
411 case VendorDeviceRequest | FTDI_GET_LATENCY:
412 data[0] = s->latency;
413 p->actual_length = 1;
414 break;
415 default:
416 fail:
417 trace_usb_serial_unsupported_control(bus->busnr, dev->addr, request,
418 value);
419 p->status = USB_RET_STALL;
420 break;
421 }
422 }
423
usb_serial_token_in(USBSerialState * s,USBPacket * p)424 static void usb_serial_token_in(USBSerialState *s, USBPacket *p)
425 {
426 const int max_packet_size = desc_iface0.eps[0].wMaxPacketSize;
427 int packet_len;
428 uint8_t header[2];
429
430 packet_len = p->iov.size;
431 if (packet_len <= 2) {
432 p->status = USB_RET_NAK;
433 return;
434 }
435
436 header[0] = usb_get_modem_lines(s) | 1;
437 /* We do not have the uart details */
438 /* handle serial break */
439 if (s->event_trigger && s->event_trigger & FTDI_BI) {
440 s->event_trigger &= ~FTDI_BI;
441 header[1] = FTDI_BI;
442 usb_packet_copy(p, header, 2);
443 return;
444 } else {
445 header[1] = 0;
446 }
447
448 if (!s->recv_used) {
449 p->status = USB_RET_NAK;
450 return;
451 }
452
453 while (s->recv_used && packet_len > 2) {
454 int first_len, len;
455
456 len = MIN(packet_len, max_packet_size);
457 len -= 2;
458 if (len > s->recv_used) {
459 len = s->recv_used;
460 }
461
462 first_len = RECV_BUF - s->recv_ptr;
463 if (first_len > len) {
464 first_len = len;
465 }
466 usb_packet_copy(p, header, 2);
467 usb_packet_copy(p, s->recv_buf + s->recv_ptr, first_len);
468 if (len > first_len) {
469 usb_packet_copy(p, s->recv_buf, len - first_len);
470 }
471 s->recv_used -= len;
472 s->recv_ptr = (s->recv_ptr + len) % RECV_BUF;
473 packet_len -= len + 2;
474 }
475 }
476
usb_serial_handle_data(USBDevice * dev,USBPacket * p)477 static void usb_serial_handle_data(USBDevice *dev, USBPacket *p)
478 {
479 USBSerialState *s = USB_SERIAL(dev);
480 USBBus *bus = usb_bus_from_device(dev);
481 uint8_t devep = p->ep->nr;
482 struct iovec *iov;
483 int i;
484
485 switch (p->pid) {
486 case USB_TOKEN_OUT:
487 if (devep != 2) {
488 goto fail;
489 }
490 for (i = 0; i < p->iov.niov; i++) {
491 iov = p->iov.iov + i;
492 /*
493 * XXX this blocks entire thread. Rewrite to use
494 * qemu_chr_fe_write and background I/O callbacks
495 */
496 qemu_chr_fe_write_all(&s->cs, iov->iov_base, iov->iov_len);
497 }
498 p->actual_length = p->iov.size;
499 break;
500
501 case USB_TOKEN_IN:
502 if (devep != 1) {
503 goto fail;
504 }
505 usb_serial_token_in(s, p);
506 break;
507
508 default:
509 trace_usb_serial_bad_token(bus->busnr, dev->addr);
510 fail:
511 p->status = USB_RET_STALL;
512 break;
513 }
514 }
515
usb_serial_can_read(void * opaque)516 static int usb_serial_can_read(void *opaque)
517 {
518 USBSerialState *s = opaque;
519
520 if (!s->dev.attached) {
521 return 0;
522 }
523 return RECV_BUF - s->recv_used;
524 }
525
usb_serial_read(void * opaque,const uint8_t * buf,int size)526 static void usb_serial_read(void *opaque, const uint8_t *buf, int size)
527 {
528 USBSerialState *s = opaque;
529 int first_size, start;
530
531 /* room in the buffer? */
532 if (size > (RECV_BUF - s->recv_used)) {
533 size = RECV_BUF - s->recv_used;
534 }
535
536 start = s->recv_ptr + s->recv_used;
537 if (start < RECV_BUF) {
538 /* copy data to end of buffer */
539 first_size = RECV_BUF - start;
540 if (first_size > size) {
541 first_size = size;
542 }
543
544 memcpy(s->recv_buf + start, buf, first_size);
545
546 /* wrap around to front if needed */
547 if (size > first_size) {
548 memcpy(s->recv_buf, buf + first_size, size - first_size);
549 }
550 } else {
551 start -= RECV_BUF;
552 memcpy(s->recv_buf + start, buf, size);
553 }
554 s->recv_used += size;
555
556 usb_wakeup(s->intr, 0);
557 }
558
usb_serial_event(void * opaque,QEMUChrEvent event)559 static void usb_serial_event(void *opaque, QEMUChrEvent event)
560 {
561 USBSerialState *s = opaque;
562
563 switch (event) {
564 case CHR_EVENT_BREAK:
565 s->event_trigger |= FTDI_BI;
566 break;
567 case CHR_EVENT_OPENED:
568 if (!s->always_plugged && !s->dev.attached) {
569 usb_device_attach(&s->dev, &error_abort);
570 }
571 break;
572 case CHR_EVENT_CLOSED:
573 if (!s->always_plugged && s->dev.attached) {
574 usb_device_detach(&s->dev);
575 }
576 break;
577 case CHR_EVENT_MUX_IN:
578 case CHR_EVENT_MUX_OUT:
579 /* Ignore */
580 break;
581 }
582 }
583
usb_serial_realize(USBDevice * dev,Error ** errp)584 static void usb_serial_realize(USBDevice *dev, Error **errp)
585 {
586 USBSerialState *s = USB_SERIAL(dev);
587 Error *local_err = NULL;
588
589 usb_desc_create_serial(dev);
590 usb_desc_init(dev);
591 dev->auto_attach = 0;
592
593 if (!qemu_chr_fe_backend_connected(&s->cs)) {
594 error_setg(errp, "Property chardev is required");
595 return;
596 }
597
598 usb_check_attach(dev, &local_err);
599 if (local_err) {
600 error_propagate(errp, local_err);
601 return;
602 }
603
604 qemu_chr_fe_set_handlers(&s->cs, usb_serial_can_read, usb_serial_read,
605 usb_serial_event, NULL, s, NULL, true);
606 usb_serial_handle_reset(dev);
607
608 if ((s->always_plugged || qemu_chr_fe_backend_open(&s->cs)) &&
609 !dev->attached) {
610 usb_device_attach(dev, &error_abort);
611 }
612 s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
613 }
614
usb_braille_init(void)615 static USBDevice *usb_braille_init(void)
616 {
617 USBDevice *dev;
618 Chardev *cdrv;
619
620 cdrv = qemu_chr_new("braille", "braille", NULL);
621 if (!cdrv) {
622 return NULL;
623 }
624
625 dev = USB_DEVICE(qdev_new("usb-braille"));
626 qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
627 return dev;
628 }
629
630 static const VMStateDescription vmstate_usb_serial = {
631 .name = "usb-serial",
632 .unmigratable = 1,
633 };
634
635 static const Property serial_properties[] = {
636 DEFINE_PROP_CHR("chardev", USBSerialState, cs),
637 DEFINE_PROP_BOOL("always-plugged", USBSerialState, always_plugged, false),
638 };
639
usb_serial_dev_class_init(ObjectClass * klass,const void * data)640 static void usb_serial_dev_class_init(ObjectClass *klass, const void *data)
641 {
642 DeviceClass *dc = DEVICE_CLASS(klass);
643 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
644
645 uc->realize = usb_serial_realize;
646 uc->handle_reset = usb_serial_handle_reset;
647 uc->handle_control = usb_serial_handle_control;
648 uc->handle_data = usb_serial_handle_data;
649 dc->vmsd = &vmstate_usb_serial;
650 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
651 }
652
653 static const TypeInfo usb_serial_dev_type_info = {
654 .name = TYPE_USB_SERIAL,
655 .parent = TYPE_USB_DEVICE,
656 .instance_size = sizeof(USBSerialState),
657 .abstract = true,
658 .class_init = usb_serial_dev_class_init,
659 };
660
usb_serial_class_initfn(ObjectClass * klass,const void * data)661 static void usb_serial_class_initfn(ObjectClass *klass, const void *data)
662 {
663 DeviceClass *dc = DEVICE_CLASS(klass);
664 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
665
666 uc->product_desc = "QEMU USB Serial";
667 uc->usb_desc = &desc_serial;
668 device_class_set_props(dc, serial_properties);
669 }
670
671 static const TypeInfo serial_info = {
672 .name = "usb-serial",
673 .parent = TYPE_USB_SERIAL,
674 .class_init = usb_serial_class_initfn,
675 };
676
677 static const Property braille_properties[] = {
678 DEFINE_PROP_CHR("chardev", USBSerialState, cs),
679 };
680
usb_braille_class_initfn(ObjectClass * klass,const void * data)681 static void usb_braille_class_initfn(ObjectClass *klass, const void *data)
682 {
683 DeviceClass *dc = DEVICE_CLASS(klass);
684 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
685
686 uc->product_desc = "QEMU USB Braille";
687 uc->usb_desc = &desc_braille;
688 device_class_set_props(dc, braille_properties);
689 }
690
691 static const TypeInfo braille_info = {
692 .name = "usb-braille",
693 .parent = TYPE_USB_SERIAL,
694 .class_init = usb_braille_class_initfn,
695 };
696
usb_serial_register_types(void)697 static void usb_serial_register_types(void)
698 {
699 type_register_static(&usb_serial_dev_type_info);
700 type_register_static(&serial_info);
701 type_register_static(&braille_info);
702 usb_legacy_register("usb-braille", "braille", usb_braille_init);
703 }
704
705 type_init(usb_serial_register_types)
706