root / hw / usb.c @ 93148aa5
History | View | Annotate | Download (16.3 kB)
1 |
/*
|
---|---|
2 |
* QEMU USB emulation
|
3 |
*
|
4 |
* Copyright (c) 2005 Fabrice Bellard
|
5 |
*
|
6 |
* 2008 Generic packet handler rewrite by Max Krasnyansky
|
7 |
*
|
8 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
9 |
* of this software and associated documentation files (the "Software"), to deal
|
10 |
* in the Software without restriction, including without limitation the rights
|
11 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
12 |
* copies of the Software, and to permit persons to whom the Software is
|
13 |
* furnished to do so, subject to the following conditions:
|
14 |
*
|
15 |
* The above copyright notice and this permission notice shall be included in
|
16 |
* all copies or substantial portions of the Software.
|
17 |
*
|
18 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
19 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
20 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
21 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
22 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
23 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
24 |
* THE SOFTWARE.
|
25 |
*/
|
26 |
#include "qemu-common.h" |
27 |
#include "usb.h" |
28 |
#include "iov.h" |
29 |
#include "trace.h" |
30 |
|
31 |
void usb_attach(USBPort *port)
|
32 |
{ |
33 |
USBDevice *dev = port->dev; |
34 |
|
35 |
assert(dev != NULL);
|
36 |
assert(dev->attached); |
37 |
assert(dev->state == USB_STATE_NOTATTACHED); |
38 |
port->ops->attach(port); |
39 |
dev->state = USB_STATE_ATTACHED; |
40 |
usb_device_handle_attach(dev); |
41 |
} |
42 |
|
43 |
void usb_detach(USBPort *port)
|
44 |
{ |
45 |
USBDevice *dev = port->dev; |
46 |
|
47 |
assert(dev != NULL);
|
48 |
assert(dev->state != USB_STATE_NOTATTACHED); |
49 |
port->ops->detach(port); |
50 |
dev->state = USB_STATE_NOTATTACHED; |
51 |
} |
52 |
|
53 |
void usb_port_reset(USBPort *port)
|
54 |
{ |
55 |
USBDevice *dev = port->dev; |
56 |
|
57 |
assert(dev != NULL);
|
58 |
usb_detach(port); |
59 |
usb_attach(port); |
60 |
usb_device_reset(dev); |
61 |
} |
62 |
|
63 |
void usb_device_reset(USBDevice *dev)
|
64 |
{ |
65 |
if (dev == NULL || !dev->attached) { |
66 |
return;
|
67 |
} |
68 |
dev->remote_wakeup = 0;
|
69 |
dev->addr = 0;
|
70 |
dev->state = USB_STATE_DEFAULT; |
71 |
usb_device_handle_reset(dev); |
72 |
} |
73 |
|
74 |
void usb_wakeup(USBEndpoint *ep)
|
75 |
{ |
76 |
USBDevice *dev = ep->dev; |
77 |
USBBus *bus = usb_bus_from_device(dev); |
78 |
|
79 |
if (dev->remote_wakeup && dev->port && dev->port->ops->wakeup) {
|
80 |
dev->port->ops->wakeup(dev->port); |
81 |
} |
82 |
if (bus->ops->wakeup_endpoint) {
|
83 |
bus->ops->wakeup_endpoint(bus, ep); |
84 |
} |
85 |
} |
86 |
|
87 |
/**********************/
|
88 |
|
89 |
/* generic USB device helpers (you are not forced to use them when
|
90 |
writing your USB device driver, but they help handling the
|
91 |
protocol)
|
92 |
*/
|
93 |
|
94 |
#define SETUP_STATE_IDLE 0 |
95 |
#define SETUP_STATE_SETUP 1 |
96 |
#define SETUP_STATE_DATA 2 |
97 |
#define SETUP_STATE_ACK 3 |
98 |
|
99 |
static int do_token_setup(USBDevice *s, USBPacket *p) |
100 |
{ |
101 |
int request, value, index;
|
102 |
int ret = 0; |
103 |
|
104 |
if (p->iov.size != 8) { |
105 |
return USB_RET_STALL;
|
106 |
} |
107 |
|
108 |
usb_packet_copy(p, s->setup_buf, p->iov.size); |
109 |
s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; |
110 |
s->setup_index = 0;
|
111 |
|
112 |
request = (s->setup_buf[0] << 8) | s->setup_buf[1]; |
113 |
value = (s->setup_buf[3] << 8) | s->setup_buf[2]; |
114 |
index = (s->setup_buf[5] << 8) | s->setup_buf[4]; |
115 |
|
116 |
if (s->setup_buf[0] & USB_DIR_IN) { |
117 |
ret = usb_device_handle_control(s, p, request, value, index, |
118 |
s->setup_len, s->data_buf); |
119 |
if (ret == USB_RET_ASYNC) {
|
120 |
s->setup_state = SETUP_STATE_SETUP; |
121 |
return USB_RET_ASYNC;
|
122 |
} |
123 |
if (ret < 0) |
124 |
return ret;
|
125 |
|
126 |
if (ret < s->setup_len)
|
127 |
s->setup_len = ret; |
128 |
s->setup_state = SETUP_STATE_DATA; |
129 |
} else {
|
130 |
if (s->setup_len > sizeof(s->data_buf)) { |
131 |
fprintf(stderr, |
132 |
"usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n",
|
133 |
s->setup_len, sizeof(s->data_buf));
|
134 |
return USB_RET_STALL;
|
135 |
} |
136 |
if (s->setup_len == 0) |
137 |
s->setup_state = SETUP_STATE_ACK; |
138 |
else
|
139 |
s->setup_state = SETUP_STATE_DATA; |
140 |
} |
141 |
|
142 |
return ret;
|
143 |
} |
144 |
|
145 |
static int do_token_in(USBDevice *s, USBPacket *p) |
146 |
{ |
147 |
int request, value, index;
|
148 |
int ret = 0; |
149 |
|
150 |
assert(p->ep->nr == 0);
|
151 |
|
152 |
request = (s->setup_buf[0] << 8) | s->setup_buf[1]; |
153 |
value = (s->setup_buf[3] << 8) | s->setup_buf[2]; |
154 |
index = (s->setup_buf[5] << 8) | s->setup_buf[4]; |
155 |
|
156 |
switch(s->setup_state) {
|
157 |
case SETUP_STATE_ACK:
|
158 |
if (!(s->setup_buf[0] & USB_DIR_IN)) { |
159 |
ret = usb_device_handle_control(s, p, request, value, index, |
160 |
s->setup_len, s->data_buf); |
161 |
if (ret == USB_RET_ASYNC) {
|
162 |
return USB_RET_ASYNC;
|
163 |
} |
164 |
s->setup_state = SETUP_STATE_IDLE; |
165 |
if (ret > 0) |
166 |
return 0; |
167 |
return ret;
|
168 |
} |
169 |
|
170 |
/* return 0 byte */
|
171 |
return 0; |
172 |
|
173 |
case SETUP_STATE_DATA:
|
174 |
if (s->setup_buf[0] & USB_DIR_IN) { |
175 |
int len = s->setup_len - s->setup_index;
|
176 |
if (len > p->iov.size) {
|
177 |
len = p->iov.size; |
178 |
} |
179 |
usb_packet_copy(p, s->data_buf + s->setup_index, len); |
180 |
s->setup_index += len; |
181 |
if (s->setup_index >= s->setup_len)
|
182 |
s->setup_state = SETUP_STATE_ACK; |
183 |
return len;
|
184 |
} |
185 |
|
186 |
s->setup_state = SETUP_STATE_IDLE; |
187 |
return USB_RET_STALL;
|
188 |
|
189 |
default:
|
190 |
return USB_RET_STALL;
|
191 |
} |
192 |
} |
193 |
|
194 |
static int do_token_out(USBDevice *s, USBPacket *p) |
195 |
{ |
196 |
assert(p->ep->nr == 0);
|
197 |
|
198 |
switch(s->setup_state) {
|
199 |
case SETUP_STATE_ACK:
|
200 |
if (s->setup_buf[0] & USB_DIR_IN) { |
201 |
s->setup_state = SETUP_STATE_IDLE; |
202 |
/* transfer OK */
|
203 |
} else {
|
204 |
/* ignore additional output */
|
205 |
} |
206 |
return 0; |
207 |
|
208 |
case SETUP_STATE_DATA:
|
209 |
if (!(s->setup_buf[0] & USB_DIR_IN)) { |
210 |
int len = s->setup_len - s->setup_index;
|
211 |
if (len > p->iov.size) {
|
212 |
len = p->iov.size; |
213 |
} |
214 |
usb_packet_copy(p, s->data_buf + s->setup_index, len); |
215 |
s->setup_index += len; |
216 |
if (s->setup_index >= s->setup_len)
|
217 |
s->setup_state = SETUP_STATE_ACK; |
218 |
return len;
|
219 |
} |
220 |
|
221 |
s->setup_state = SETUP_STATE_IDLE; |
222 |
return USB_RET_STALL;
|
223 |
|
224 |
default:
|
225 |
return USB_RET_STALL;
|
226 |
} |
227 |
} |
228 |
|
229 |
/* ctrl complete function for devices which use usb_generic_handle_packet and
|
230 |
may return USB_RET_ASYNC from their handle_control callback. Device code
|
231 |
which does this *must* call this function instead of the normal
|
232 |
usb_packet_complete to complete their async control packets. */
|
233 |
void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p)
|
234 |
{ |
235 |
if (p->result < 0) { |
236 |
s->setup_state = SETUP_STATE_IDLE; |
237 |
} |
238 |
|
239 |
switch (s->setup_state) {
|
240 |
case SETUP_STATE_SETUP:
|
241 |
if (p->result < s->setup_len) {
|
242 |
s->setup_len = p->result; |
243 |
} |
244 |
s->setup_state = SETUP_STATE_DATA; |
245 |
p->result = 8;
|
246 |
break;
|
247 |
|
248 |
case SETUP_STATE_ACK:
|
249 |
s->setup_state = SETUP_STATE_IDLE; |
250 |
p->result = 0;
|
251 |
break;
|
252 |
|
253 |
default:
|
254 |
break;
|
255 |
} |
256 |
usb_packet_complete(s, p); |
257 |
} |
258 |
|
259 |
/* XXX: fix overflow */
|
260 |
int set_usb_string(uint8_t *buf, const char *str) |
261 |
{ |
262 |
int len, i;
|
263 |
uint8_t *q; |
264 |
|
265 |
q = buf; |
266 |
len = strlen(str); |
267 |
*q++ = 2 * len + 2; |
268 |
*q++ = 3;
|
269 |
for(i = 0; i < len; i++) { |
270 |
*q++ = str[i]; |
271 |
*q++ = 0;
|
272 |
} |
273 |
return q - buf;
|
274 |
} |
275 |
|
276 |
USBDevice *usb_find_device(USBPort *port, uint8_t addr) |
277 |
{ |
278 |
USBDevice *dev = port->dev; |
279 |
|
280 |
if (dev == NULL || !dev->attached || dev->state != USB_STATE_DEFAULT) { |
281 |
return NULL; |
282 |
} |
283 |
if (dev->addr == addr) {
|
284 |
return dev;
|
285 |
} |
286 |
return usb_device_find_device(dev, addr);
|
287 |
} |
288 |
|
289 |
static int usb_process_one(USBPacket *p) |
290 |
{ |
291 |
USBDevice *dev = p->ep->dev; |
292 |
|
293 |
if (p->ep->nr == 0) { |
294 |
/* control pipe */
|
295 |
switch (p->pid) {
|
296 |
case USB_TOKEN_SETUP:
|
297 |
return do_token_setup(dev, p);
|
298 |
case USB_TOKEN_IN:
|
299 |
return do_token_in(dev, p);
|
300 |
case USB_TOKEN_OUT:
|
301 |
return do_token_out(dev, p);
|
302 |
default:
|
303 |
return USB_RET_STALL;
|
304 |
} |
305 |
} else {
|
306 |
/* data pipe */
|
307 |
return usb_device_handle_data(dev, p);
|
308 |
} |
309 |
} |
310 |
|
311 |
/* Hand over a packet to a device for processing. Return value
|
312 |
USB_RET_ASYNC indicates the processing isn't finished yet, the
|
313 |
driver will call usb_packet_complete() when done processing it. */
|
314 |
int usb_handle_packet(USBDevice *dev, USBPacket *p)
|
315 |
{ |
316 |
int ret;
|
317 |
|
318 |
if (dev == NULL) { |
319 |
return USB_RET_NODEV;
|
320 |
} |
321 |
assert(dev == p->ep->dev); |
322 |
assert(dev->state == USB_STATE_DEFAULT); |
323 |
assert(p->state == USB_PACKET_SETUP); |
324 |
assert(p->ep != NULL);
|
325 |
|
326 |
if (QTAILQ_EMPTY(&p->ep->queue)) {
|
327 |
ret = usb_process_one(p); |
328 |
if (ret == USB_RET_ASYNC) {
|
329 |
usb_packet_set_state(p, USB_PACKET_ASYNC); |
330 |
QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); |
331 |
} else {
|
332 |
p->result = ret; |
333 |
usb_packet_set_state(p, USB_PACKET_COMPLETE); |
334 |
} |
335 |
} else {
|
336 |
ret = USB_RET_ASYNC; |
337 |
usb_packet_set_state(p, USB_PACKET_QUEUED); |
338 |
QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); |
339 |
} |
340 |
return ret;
|
341 |
} |
342 |
|
343 |
/* Notify the controller that an async packet is complete. This should only
|
344 |
be called for packets previously deferred by returning USB_RET_ASYNC from
|
345 |
handle_packet. */
|
346 |
void usb_packet_complete(USBDevice *dev, USBPacket *p)
|
347 |
{ |
348 |
USBEndpoint *ep = p->ep; |
349 |
int ret;
|
350 |
|
351 |
assert(p->state == USB_PACKET_ASYNC); |
352 |
assert(QTAILQ_FIRST(&ep->queue) == p); |
353 |
usb_packet_set_state(p, USB_PACKET_COMPLETE); |
354 |
QTAILQ_REMOVE(&ep->queue, p, queue); |
355 |
dev->port->ops->complete(dev->port, p); |
356 |
|
357 |
while (!QTAILQ_EMPTY(&ep->queue)) {
|
358 |
p = QTAILQ_FIRST(&ep->queue); |
359 |
assert(p->state == USB_PACKET_QUEUED); |
360 |
ret = usb_process_one(p); |
361 |
if (ret == USB_RET_ASYNC) {
|
362 |
usb_packet_set_state(p, USB_PACKET_ASYNC); |
363 |
break;
|
364 |
} |
365 |
p->result = ret; |
366 |
usb_packet_set_state(p, USB_PACKET_COMPLETE); |
367 |
QTAILQ_REMOVE(&ep->queue, p, queue); |
368 |
dev->port->ops->complete(dev->port, p); |
369 |
} |
370 |
} |
371 |
|
372 |
/* Cancel an active packet. The packed must have been deferred by
|
373 |
returning USB_RET_ASYNC from handle_packet, and not yet
|
374 |
completed. */
|
375 |
void usb_cancel_packet(USBPacket * p)
|
376 |
{ |
377 |
bool callback = (p->state == USB_PACKET_ASYNC);
|
378 |
assert(usb_packet_is_inflight(p)); |
379 |
usb_packet_set_state(p, USB_PACKET_CANCELED); |
380 |
QTAILQ_REMOVE(&p->ep->queue, p, queue); |
381 |
if (callback) {
|
382 |
usb_device_cancel_packet(p->ep->dev, p); |
383 |
} |
384 |
} |
385 |
|
386 |
|
387 |
void usb_packet_init(USBPacket *p)
|
388 |
{ |
389 |
qemu_iovec_init(&p->iov, 1);
|
390 |
} |
391 |
|
392 |
void usb_packet_set_state(USBPacket *p, USBPacketState state)
|
393 |
{ |
394 |
static const char *name[] = { |
395 |
[USB_PACKET_UNDEFINED] = "undef",
|
396 |
[USB_PACKET_SETUP] = "setup",
|
397 |
[USB_PACKET_QUEUED] = "queued",
|
398 |
[USB_PACKET_ASYNC] = "async",
|
399 |
[USB_PACKET_COMPLETE] = "complete",
|
400 |
[USB_PACKET_CANCELED] = "canceled",
|
401 |
}; |
402 |
USBDevice *dev = p->ep->dev; |
403 |
USBBus *bus = usb_bus_from_device(dev); |
404 |
|
405 |
trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, |
406 |
p, name[p->state], name[state]); |
407 |
p->state = state; |
408 |
} |
409 |
|
410 |
void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep) |
411 |
{ |
412 |
assert(!usb_packet_is_inflight(p)); |
413 |
p->pid = pid; |
414 |
p->ep = ep; |
415 |
p->result = 0;
|
416 |
qemu_iovec_reset(&p->iov); |
417 |
usb_packet_set_state(p, USB_PACKET_SETUP); |
418 |
} |
419 |
|
420 |
void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len) |
421 |
{ |
422 |
qemu_iovec_add(&p->iov, ptr, len); |
423 |
} |
424 |
|
425 |
void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes) |
426 |
{ |
427 |
assert(p->result >= 0);
|
428 |
assert(p->result + bytes <= p->iov.size); |
429 |
switch (p->pid) {
|
430 |
case USB_TOKEN_SETUP:
|
431 |
case USB_TOKEN_OUT:
|
432 |
iov_to_buf(p->iov.iov, p->iov.niov, ptr, p->result, bytes); |
433 |
break;
|
434 |
case USB_TOKEN_IN:
|
435 |
iov_from_buf(p->iov.iov, p->iov.niov, ptr, p->result, bytes); |
436 |
break;
|
437 |
default:
|
438 |
fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid);
|
439 |
abort(); |
440 |
} |
441 |
p->result += bytes; |
442 |
} |
443 |
|
444 |
void usb_packet_skip(USBPacket *p, size_t bytes)
|
445 |
{ |
446 |
assert(p->result >= 0);
|
447 |
assert(p->result + bytes <= p->iov.size); |
448 |
if (p->pid == USB_TOKEN_IN) {
|
449 |
iov_clear(p->iov.iov, p->iov.niov, p->result, bytes); |
450 |
} |
451 |
p->result += bytes; |
452 |
} |
453 |
|
454 |
void usb_packet_cleanup(USBPacket *p)
|
455 |
{ |
456 |
assert(!usb_packet_is_inflight(p)); |
457 |
qemu_iovec_destroy(&p->iov); |
458 |
} |
459 |
|
460 |
void usb_ep_init(USBDevice *dev)
|
461 |
{ |
462 |
int ep;
|
463 |
|
464 |
dev->ep_ctl.nr = 0;
|
465 |
dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL; |
466 |
dev->ep_ctl.ifnum = 0;
|
467 |
dev->ep_ctl.dev = dev; |
468 |
QTAILQ_INIT(&dev->ep_ctl.queue); |
469 |
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { |
470 |
dev->ep_in[ep].nr = ep + 1;
|
471 |
dev->ep_out[ep].nr = ep + 1;
|
472 |
dev->ep_in[ep].pid = USB_TOKEN_IN; |
473 |
dev->ep_out[ep].pid = USB_TOKEN_OUT; |
474 |
dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID; |
475 |
dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID; |
476 |
dev->ep_in[ep].ifnum = 0;
|
477 |
dev->ep_out[ep].ifnum = 0;
|
478 |
dev->ep_in[ep].dev = dev; |
479 |
dev->ep_out[ep].dev = dev; |
480 |
QTAILQ_INIT(&dev->ep_in[ep].queue); |
481 |
QTAILQ_INIT(&dev->ep_out[ep].queue); |
482 |
} |
483 |
} |
484 |
|
485 |
void usb_ep_dump(USBDevice *dev)
|
486 |
{ |
487 |
static const char *tname[] = { |
488 |
[USB_ENDPOINT_XFER_CONTROL] = "control",
|
489 |
[USB_ENDPOINT_XFER_ISOC] = "isoc",
|
490 |
[USB_ENDPOINT_XFER_BULK] = "bulk",
|
491 |
[USB_ENDPOINT_XFER_INT] = "int",
|
492 |
}; |
493 |
int ifnum, ep, first;
|
494 |
|
495 |
fprintf(stderr, "Device \"%s\", config %d\n",
|
496 |
dev->product_desc, dev->configuration); |
497 |
for (ifnum = 0; ifnum < 16; ifnum++) { |
498 |
first = 1;
|
499 |
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { |
500 |
if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID &&
|
501 |
dev->ep_in[ep].ifnum == ifnum) { |
502 |
if (first) {
|
503 |
first = 0;
|
504 |
fprintf(stderr, " Interface %d, alternative %d\n",
|
505 |
ifnum, dev->altsetting[ifnum]); |
506 |
} |
507 |
fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep,
|
508 |
tname[dev->ep_in[ep].type], |
509 |
dev->ep_in[ep].max_packet_size); |
510 |
} |
511 |
if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID &&
|
512 |
dev->ep_out[ep].ifnum == ifnum) { |
513 |
if (first) {
|
514 |
first = 0;
|
515 |
fprintf(stderr, " Interface %d, alternative %d\n",
|
516 |
ifnum, dev->altsetting[ifnum]); |
517 |
} |
518 |
fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep,
|
519 |
tname[dev->ep_out[ep].type], |
520 |
dev->ep_out[ep].max_packet_size); |
521 |
} |
522 |
} |
523 |
} |
524 |
fprintf(stderr, "--\n");
|
525 |
} |
526 |
|
527 |
struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep) |
528 |
{ |
529 |
struct USBEndpoint *eps;
|
530 |
|
531 |
if (dev == NULL) { |
532 |
return NULL; |
533 |
} |
534 |
eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out; |
535 |
if (ep == 0) { |
536 |
return &dev->ep_ctl;
|
537 |
} |
538 |
assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); |
539 |
assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
|
540 |
return eps + ep - 1; |
541 |
} |
542 |
|
543 |
uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep) |
544 |
{ |
545 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
546 |
return uep->type;
|
547 |
} |
548 |
|
549 |
void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type) |
550 |
{ |
551 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
552 |
uep->type = type; |
553 |
} |
554 |
|
555 |
uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep) |
556 |
{ |
557 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
558 |
return uep->ifnum;
|
559 |
} |
560 |
|
561 |
void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum) |
562 |
{ |
563 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
564 |
uep->ifnum = ifnum; |
565 |
} |
566 |
|
567 |
void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep, |
568 |
uint16_t raw) |
569 |
{ |
570 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
571 |
int size, microframes;
|
572 |
|
573 |
size = raw & 0x7ff;
|
574 |
switch ((raw >> 11) & 3) { |
575 |
case 1: |
576 |
microframes = 2;
|
577 |
break;
|
578 |
case 2: |
579 |
microframes = 3;
|
580 |
break;
|
581 |
default:
|
582 |
microframes = 1;
|
583 |
break;
|
584 |
} |
585 |
uep->max_packet_size = size * microframes; |
586 |
} |
587 |
|
588 |
int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep) |
589 |
{ |
590 |
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
|
591 |
return uep->max_packet_size;
|
592 |
} |