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 "hw/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 #define SETUP_STATE_PARAM 4 99 100 static int do_token_setup(USBDevice *s, USBPacket *p) 101 { 102 int request, value, index; 103 int ret = 0; 104 105 if (p->iov.size != 8) { 106 return USB_RET_STALL; 107 } 108 109 usb_packet_copy(p, s->setup_buf, p->iov.size); 110 p->result = 0; 111 s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; 112 s->setup_index = 0; 113 114 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 115 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 116 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 117 118 if (s->setup_buf[0] & USB_DIR_IN) { 119 ret = usb_device_handle_control(s, p, request, value, index, 120 s->setup_len, s->data_buf); 121 if (ret == USB_RET_ASYNC) { 122 s->setup_state = SETUP_STATE_SETUP; 123 return USB_RET_ASYNC; 124 } 125 if (ret < 0) 126 return ret; 127 128 if (ret < s->setup_len) 129 s->setup_len = ret; 130 s->setup_state = SETUP_STATE_DATA; 131 } else { 132 if (s->setup_len > sizeof(s->data_buf)) { 133 fprintf(stderr, 134 "usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n", 135 s->setup_len, sizeof(s->data_buf)); 136 return USB_RET_STALL; 137 } 138 if (s->setup_len == 0) 139 s->setup_state = SETUP_STATE_ACK; 140 else 141 s->setup_state = SETUP_STATE_DATA; 142 } 143 144 return ret; 145 } 146 147 static int do_token_in(USBDevice *s, USBPacket *p) 148 { 149 int request, value, index; 150 int ret = 0; 151 152 assert(p->ep->nr == 0); 153 154 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 155 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 156 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 157 158 switch(s->setup_state) { 159 case SETUP_STATE_ACK: 160 if (!(s->setup_buf[0] & USB_DIR_IN)) { 161 ret = usb_device_handle_control(s, p, request, value, index, 162 s->setup_len, s->data_buf); 163 if (ret == USB_RET_ASYNC) { 164 return USB_RET_ASYNC; 165 } 166 s->setup_state = SETUP_STATE_IDLE; 167 if (ret > 0) 168 return 0; 169 return ret; 170 } 171 172 /* return 0 byte */ 173 return 0; 174 175 case SETUP_STATE_DATA: 176 if (s->setup_buf[0] & USB_DIR_IN) { 177 int len = s->setup_len - s->setup_index; 178 if (len > p->iov.size) { 179 len = p->iov.size; 180 } 181 usb_packet_copy(p, s->data_buf + s->setup_index, len); 182 s->setup_index += len; 183 if (s->setup_index >= s->setup_len) 184 s->setup_state = SETUP_STATE_ACK; 185 return len; 186 } 187 188 s->setup_state = SETUP_STATE_IDLE; 189 return USB_RET_STALL; 190 191 default: 192 return USB_RET_STALL; 193 } 194 } 195 196 static int do_token_out(USBDevice *s, USBPacket *p) 197 { 198 assert(p->ep->nr == 0); 199 200 switch(s->setup_state) { 201 case SETUP_STATE_ACK: 202 if (s->setup_buf[0] & USB_DIR_IN) { 203 s->setup_state = SETUP_STATE_IDLE; 204 /* transfer OK */ 205 } else { 206 /* ignore additional output */ 207 } 208 return 0; 209 210 case SETUP_STATE_DATA: 211 if (!(s->setup_buf[0] & USB_DIR_IN)) { 212 int len = s->setup_len - s->setup_index; 213 if (len > p->iov.size) { 214 len = p->iov.size; 215 } 216 usb_packet_copy(p, s->data_buf + s->setup_index, len); 217 s->setup_index += len; 218 if (s->setup_index >= s->setup_len) 219 s->setup_state = SETUP_STATE_ACK; 220 return len; 221 } 222 223 s->setup_state = SETUP_STATE_IDLE; 224 return USB_RET_STALL; 225 226 default: 227 return USB_RET_STALL; 228 } 229 } 230 231 static int do_parameter(USBDevice *s, USBPacket *p) 232 { 233 int request, value, index; 234 int i, ret = 0; 235 236 for (i = 0; i < 8; i++) { 237 s->setup_buf[i] = p->parameter >> (i*8); 238 } 239 240 s->setup_state = SETUP_STATE_PARAM; 241 s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; 242 s->setup_index = 0; 243 244 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 245 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 246 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 247 248 if (s->setup_len > sizeof(s->data_buf)) { 249 fprintf(stderr, 250 "usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n", 251 s->setup_len, sizeof(s->data_buf)); 252 return USB_RET_STALL; 253 } 254 255 if (p->pid == USB_TOKEN_OUT) { 256 usb_packet_copy(p, s->data_buf, s->setup_len); 257 } 258 259 ret = usb_device_handle_control(s, p, request, value, index, 260 s->setup_len, s->data_buf); 261 if (ret < 0) { 262 return ret; 263 } 264 265 if (ret < s->setup_len) { 266 s->setup_len = ret; 267 } 268 if (p->pid == USB_TOKEN_IN) { 269 usb_packet_copy(p, s->data_buf, s->setup_len); 270 } 271 272 return ret; 273 } 274 275 /* ctrl complete function for devices which use usb_generic_handle_packet and 276 may return USB_RET_ASYNC from their handle_control callback. Device code 277 which does this *must* call this function instead of the normal 278 usb_packet_complete to complete their async control packets. */ 279 void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p) 280 { 281 if (p->result < 0) { 282 s->setup_state = SETUP_STATE_IDLE; 283 } 284 285 switch (s->setup_state) { 286 case SETUP_STATE_SETUP: 287 if (p->result < s->setup_len) { 288 s->setup_len = p->result; 289 } 290 s->setup_state = SETUP_STATE_DATA; 291 p->result = 8; 292 break; 293 294 case SETUP_STATE_ACK: 295 s->setup_state = SETUP_STATE_IDLE; 296 p->result = 0; 297 break; 298 299 case SETUP_STATE_PARAM: 300 if (p->result < s->setup_len) { 301 s->setup_len = p->result; 302 } 303 if (p->pid == USB_TOKEN_IN) { 304 p->result = 0; 305 usb_packet_copy(p, s->data_buf, s->setup_len); 306 } 307 break; 308 309 default: 310 break; 311 } 312 usb_packet_complete(s, p); 313 } 314 315 /* XXX: fix overflow */ 316 int set_usb_string(uint8_t *buf, const char *str) 317 { 318 int len, i; 319 uint8_t *q; 320 321 q = buf; 322 len = strlen(str); 323 *q++ = 2 * len + 2; 324 *q++ = 3; 325 for(i = 0; i < len; i++) { 326 *q++ = str[i]; 327 *q++ = 0; 328 } 329 return q - buf; 330 } 331 332 USBDevice *usb_find_device(USBPort *port, uint8_t addr) 333 { 334 USBDevice *dev = port->dev; 335 336 if (dev == NULL || !dev->attached || dev->state != USB_STATE_DEFAULT) { 337 return NULL; 338 } 339 if (dev->addr == addr) { 340 return dev; 341 } 342 return usb_device_find_device(dev, addr); 343 } 344 345 static int usb_process_one(USBPacket *p) 346 { 347 USBDevice *dev = p->ep->dev; 348 349 if (p->ep->nr == 0) { 350 /* control pipe */ 351 if (p->parameter) { 352 return do_parameter(dev, p); 353 } 354 switch (p->pid) { 355 case USB_TOKEN_SETUP: 356 return do_token_setup(dev, p); 357 case USB_TOKEN_IN: 358 return do_token_in(dev, p); 359 case USB_TOKEN_OUT: 360 return do_token_out(dev, p); 361 default: 362 return USB_RET_STALL; 363 } 364 } else { 365 /* data pipe */ 366 return usb_device_handle_data(dev, p); 367 } 368 } 369 370 /* Hand over a packet to a device for processing. Return value 371 USB_RET_ASYNC indicates the processing isn't finished yet, the 372 driver will call usb_packet_complete() when done processing it. */ 373 int usb_handle_packet(USBDevice *dev, USBPacket *p) 374 { 375 int ret; 376 377 if (dev == NULL) { 378 return USB_RET_NODEV; 379 } 380 assert(dev == p->ep->dev); 381 assert(dev->state == USB_STATE_DEFAULT); 382 usb_packet_check_state(p, USB_PACKET_SETUP); 383 assert(p->ep != NULL); 384 385 /* Submitting a new packet clears halt */ 386 if (p->ep->halted) { 387 assert(QTAILQ_EMPTY(&p->ep->queue)); 388 p->ep->halted = false; 389 } 390 391 if (QTAILQ_EMPTY(&p->ep->queue) || p->ep->pipeline) { 392 ret = usb_process_one(p); 393 if (ret == USB_RET_ASYNC) { 394 usb_packet_set_state(p, USB_PACKET_ASYNC); 395 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 396 } else if (ret == USB_RET_ADD_TO_QUEUE) { 397 usb_packet_set_state(p, USB_PACKET_QUEUED); 398 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 399 ret = USB_RET_ASYNC; 400 } else { 401 /* 402 * When pipelining is enabled usb-devices must always return async, 403 * otherwise packets can complete out of order! 404 */ 405 assert(!p->ep->pipeline || QTAILQ_EMPTY(&p->ep->queue)); 406 if (ret != USB_RET_NAK) { 407 p->result = ret; 408 usb_packet_set_state(p, USB_PACKET_COMPLETE); 409 } 410 } 411 } else { 412 ret = USB_RET_ASYNC; 413 usb_packet_set_state(p, USB_PACKET_QUEUED); 414 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 415 } 416 return ret; 417 } 418 419 void usb_packet_complete_one(USBDevice *dev, USBPacket *p) 420 { 421 USBEndpoint *ep = p->ep; 422 423 assert(QTAILQ_FIRST(&ep->queue) == p); 424 assert(p->result != USB_RET_ASYNC && p->result != USB_RET_NAK); 425 426 if (p->result < 0) { 427 ep->halted = true; 428 } 429 usb_packet_set_state(p, USB_PACKET_COMPLETE); 430 QTAILQ_REMOVE(&ep->queue, p, queue); 431 dev->port->ops->complete(dev->port, p); 432 } 433 434 /* Notify the controller that an async packet is complete. This should only 435 be called for packets previously deferred by returning USB_RET_ASYNC from 436 handle_packet. */ 437 void usb_packet_complete(USBDevice *dev, USBPacket *p) 438 { 439 USBEndpoint *ep = p->ep; 440 int ret; 441 442 usb_packet_check_state(p, USB_PACKET_ASYNC); 443 usb_packet_complete_one(dev, p); 444 445 while (!QTAILQ_EMPTY(&ep->queue)) { 446 p = QTAILQ_FIRST(&ep->queue); 447 if (ep->halted) { 448 /* Empty the queue on a halt */ 449 p->result = USB_RET_REMOVE_FROM_QUEUE; 450 dev->port->ops->complete(dev->port, p); 451 continue; 452 } 453 if (p->state == USB_PACKET_ASYNC) { 454 break; 455 } 456 usb_packet_check_state(p, USB_PACKET_QUEUED); 457 ret = usb_process_one(p); 458 if (ret == USB_RET_ASYNC) { 459 usb_packet_set_state(p, USB_PACKET_ASYNC); 460 break; 461 } 462 p->result = ret; 463 usb_packet_complete_one(ep->dev, p); 464 } 465 } 466 467 /* Cancel an active packet. The packed must have been deferred by 468 returning USB_RET_ASYNC from handle_packet, and not yet 469 completed. */ 470 void usb_cancel_packet(USBPacket * p) 471 { 472 bool callback = (p->state == USB_PACKET_ASYNC); 473 assert(usb_packet_is_inflight(p)); 474 usb_packet_set_state(p, USB_PACKET_CANCELED); 475 QTAILQ_REMOVE(&p->ep->queue, p, queue); 476 if (callback) { 477 usb_device_cancel_packet(p->ep->dev, p); 478 } 479 } 480 481 482 void usb_packet_init(USBPacket *p) 483 { 484 qemu_iovec_init(&p->iov, 1); 485 } 486 487 static const char *usb_packet_state_name(USBPacketState state) 488 { 489 static const char *name[] = { 490 [USB_PACKET_UNDEFINED] = "undef", 491 [USB_PACKET_SETUP] = "setup", 492 [USB_PACKET_QUEUED] = "queued", 493 [USB_PACKET_ASYNC] = "async", 494 [USB_PACKET_COMPLETE] = "complete", 495 [USB_PACKET_CANCELED] = "canceled", 496 }; 497 if (state < ARRAY_SIZE(name)) { 498 return name[state]; 499 } 500 return "INVALID"; 501 } 502 503 void usb_packet_check_state(USBPacket *p, USBPacketState expected) 504 { 505 USBDevice *dev; 506 USBBus *bus; 507 508 if (p->state == expected) { 509 return; 510 } 511 dev = p->ep->dev; 512 bus = usb_bus_from_device(dev); 513 trace_usb_packet_state_fault(bus->busnr, dev->port->path, p->ep->nr, p, 514 usb_packet_state_name(p->state), 515 usb_packet_state_name(expected)); 516 assert(!"usb packet state check failed"); 517 } 518 519 void usb_packet_set_state(USBPacket *p, USBPacketState state) 520 { 521 if (p->ep) { 522 USBDevice *dev = p->ep->dev; 523 USBBus *bus = usb_bus_from_device(dev); 524 trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, p, 525 usb_packet_state_name(p->state), 526 usb_packet_state_name(state)); 527 } else { 528 trace_usb_packet_state_change(-1, "", -1, p, 529 usb_packet_state_name(p->state), 530 usb_packet_state_name(state)); 531 } 532 p->state = state; 533 } 534 535 void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep, uint64_t id) 536 { 537 assert(!usb_packet_is_inflight(p)); 538 assert(p->iov.iov != NULL); 539 p->id = id; 540 p->pid = pid; 541 p->ep = ep; 542 p->result = 0; 543 p->parameter = 0; 544 qemu_iovec_reset(&p->iov); 545 usb_packet_set_state(p, USB_PACKET_SETUP); 546 } 547 548 void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len) 549 { 550 qemu_iovec_add(&p->iov, ptr, len); 551 } 552 553 void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes) 554 { 555 assert(p->result >= 0); 556 assert(p->result + bytes <= p->iov.size); 557 switch (p->pid) { 558 case USB_TOKEN_SETUP: 559 case USB_TOKEN_OUT: 560 iov_to_buf(p->iov.iov, p->iov.niov, p->result, ptr, bytes); 561 break; 562 case USB_TOKEN_IN: 563 iov_from_buf(p->iov.iov, p->iov.niov, p->result, ptr, bytes); 564 break; 565 default: 566 fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid); 567 abort(); 568 } 569 p->result += bytes; 570 } 571 572 void usb_packet_skip(USBPacket *p, size_t bytes) 573 { 574 assert(p->result >= 0); 575 assert(p->result + bytes <= p->iov.size); 576 if (p->pid == USB_TOKEN_IN) { 577 iov_memset(p->iov.iov, p->iov.niov, p->result, 0, bytes); 578 } 579 p->result += bytes; 580 } 581 582 void usb_packet_cleanup(USBPacket *p) 583 { 584 assert(!usb_packet_is_inflight(p)); 585 qemu_iovec_destroy(&p->iov); 586 } 587 588 void usb_ep_reset(USBDevice *dev) 589 { 590 int ep; 591 592 dev->ep_ctl.nr = 0; 593 dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL; 594 dev->ep_ctl.ifnum = 0; 595 dev->ep_ctl.dev = dev; 596 dev->ep_ctl.pipeline = false; 597 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 598 dev->ep_in[ep].nr = ep + 1; 599 dev->ep_out[ep].nr = ep + 1; 600 dev->ep_in[ep].pid = USB_TOKEN_IN; 601 dev->ep_out[ep].pid = USB_TOKEN_OUT; 602 dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID; 603 dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID; 604 dev->ep_in[ep].ifnum = USB_INTERFACE_INVALID; 605 dev->ep_out[ep].ifnum = USB_INTERFACE_INVALID; 606 dev->ep_in[ep].dev = dev; 607 dev->ep_out[ep].dev = dev; 608 dev->ep_in[ep].pipeline = false; 609 dev->ep_out[ep].pipeline = false; 610 } 611 } 612 613 void usb_ep_init(USBDevice *dev) 614 { 615 int ep; 616 617 usb_ep_reset(dev); 618 QTAILQ_INIT(&dev->ep_ctl.queue); 619 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 620 QTAILQ_INIT(&dev->ep_in[ep].queue); 621 QTAILQ_INIT(&dev->ep_out[ep].queue); 622 } 623 } 624 625 void usb_ep_dump(USBDevice *dev) 626 { 627 static const char *tname[] = { 628 [USB_ENDPOINT_XFER_CONTROL] = "control", 629 [USB_ENDPOINT_XFER_ISOC] = "isoc", 630 [USB_ENDPOINT_XFER_BULK] = "bulk", 631 [USB_ENDPOINT_XFER_INT] = "int", 632 }; 633 int ifnum, ep, first; 634 635 fprintf(stderr, "Device \"%s\", config %d\n", 636 dev->product_desc, dev->configuration); 637 for (ifnum = 0; ifnum < 16; ifnum++) { 638 first = 1; 639 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 640 if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID && 641 dev->ep_in[ep].ifnum == ifnum) { 642 if (first) { 643 first = 0; 644 fprintf(stderr, " Interface %d, alternative %d\n", 645 ifnum, dev->altsetting[ifnum]); 646 } 647 fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep, 648 tname[dev->ep_in[ep].type], 649 dev->ep_in[ep].max_packet_size); 650 } 651 if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID && 652 dev->ep_out[ep].ifnum == ifnum) { 653 if (first) { 654 first = 0; 655 fprintf(stderr, " Interface %d, alternative %d\n", 656 ifnum, dev->altsetting[ifnum]); 657 } 658 fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep, 659 tname[dev->ep_out[ep].type], 660 dev->ep_out[ep].max_packet_size); 661 } 662 } 663 } 664 fprintf(stderr, "--\n"); 665 } 666 667 struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep) 668 { 669 struct USBEndpoint *eps; 670 671 if (dev == NULL) { 672 return NULL; 673 } 674 eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out; 675 if (ep == 0) { 676 return &dev->ep_ctl; 677 } 678 assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); 679 assert(ep > 0 && ep <= USB_MAX_ENDPOINTS); 680 return eps + ep - 1; 681 } 682 683 uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep) 684 { 685 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 686 return uep->type; 687 } 688 689 void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type) 690 { 691 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 692 uep->type = type; 693 } 694 695 uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep) 696 { 697 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 698 return uep->ifnum; 699 } 700 701 void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum) 702 { 703 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 704 uep->ifnum = ifnum; 705 } 706 707 void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep, 708 uint16_t raw) 709 { 710 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 711 int size, microframes; 712 713 size = raw & 0x7ff; 714 switch ((raw >> 11) & 3) { 715 case 1: 716 microframes = 2; 717 break; 718 case 2: 719 microframes = 3; 720 break; 721 default: 722 microframes = 1; 723 break; 724 } 725 uep->max_packet_size = size * microframes; 726 } 727 728 int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep) 729 { 730 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 731 return uep->max_packet_size; 732 } 733 734 void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled) 735 { 736 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 737 uep->pipeline = enabled; 738 } 739 740 USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep, 741 uint64_t id) 742 { 743 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 744 USBPacket *p; 745 746 while ((p = QTAILQ_FIRST(&uep->queue)) != NULL) { 747 if (p->id == id) { 748 return p; 749 } 750 } 751 752 return NULL; 753 } 754