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 void do_token_setup(USBDevice *s, USBPacket *p) 101 { 102 int request, value, index; 103 104 if (p->iov.size != 8) { 105 p->status = USB_RET_STALL; 106 return; 107 } 108 109 usb_packet_copy(p, s->setup_buf, p->iov.size); 110 p->actual_length = 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 usb_device_handle_control(s, p, request, value, index, 120 s->setup_len, s->data_buf); 121 if (p->status == USB_RET_ASYNC) { 122 s->setup_state = SETUP_STATE_SETUP; 123 } 124 if (p->status != USB_RET_SUCCESS) { 125 return; 126 } 127 128 if (p->actual_length < s->setup_len) { 129 s->setup_len = p->actual_length; 130 } 131 s->setup_state = SETUP_STATE_DATA; 132 } else { 133 if (s->setup_len > sizeof(s->data_buf)) { 134 fprintf(stderr, 135 "usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n", 136 s->setup_len, sizeof(s->data_buf)); 137 p->status = USB_RET_STALL; 138 return; 139 } 140 if (s->setup_len == 0) 141 s->setup_state = SETUP_STATE_ACK; 142 else 143 s->setup_state = SETUP_STATE_DATA; 144 } 145 146 p->actual_length = 8; 147 } 148 149 static void do_token_in(USBDevice *s, USBPacket *p) 150 { 151 int request, value, index; 152 153 assert(p->ep->nr == 0); 154 155 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 156 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 157 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 158 159 switch(s->setup_state) { 160 case SETUP_STATE_ACK: 161 if (!(s->setup_buf[0] & USB_DIR_IN)) { 162 usb_device_handle_control(s, p, request, value, index, 163 s->setup_len, s->data_buf); 164 if (p->status == USB_RET_ASYNC) { 165 return; 166 } 167 s->setup_state = SETUP_STATE_IDLE; 168 p->actual_length = 0; 169 } 170 break; 171 172 case SETUP_STATE_DATA: 173 if (s->setup_buf[0] & USB_DIR_IN) { 174 int len = s->setup_len - s->setup_index; 175 if (len > p->iov.size) { 176 len = p->iov.size; 177 } 178 usb_packet_copy(p, s->data_buf + s->setup_index, len); 179 s->setup_index += len; 180 if (s->setup_index >= s->setup_len) { 181 s->setup_state = SETUP_STATE_ACK; 182 } 183 return; 184 } 185 s->setup_state = SETUP_STATE_IDLE; 186 p->status = USB_RET_STALL; 187 break; 188 189 default: 190 p->status = USB_RET_STALL; 191 } 192 } 193 194 static void 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 break; 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 } 219 return; 220 } 221 s->setup_state = SETUP_STATE_IDLE; 222 p->status = USB_RET_STALL; 223 break; 224 225 default: 226 p->status = USB_RET_STALL; 227 } 228 } 229 230 static void do_parameter(USBDevice *s, USBPacket *p) 231 { 232 int i, request, value, index; 233 234 for (i = 0; i < 8; i++) { 235 s->setup_buf[i] = p->parameter >> (i*8); 236 } 237 238 s->setup_state = SETUP_STATE_PARAM; 239 s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; 240 s->setup_index = 0; 241 242 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 243 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 244 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 245 246 if (s->setup_len > sizeof(s->data_buf)) { 247 fprintf(stderr, 248 "usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n", 249 s->setup_len, sizeof(s->data_buf)); 250 p->status = USB_RET_STALL; 251 return; 252 } 253 254 if (p->pid == USB_TOKEN_OUT) { 255 usb_packet_copy(p, s->data_buf, s->setup_len); 256 } 257 258 usb_device_handle_control(s, p, request, value, index, 259 s->setup_len, s->data_buf); 260 if (p->status == USB_RET_ASYNC) { 261 return; 262 } 263 264 if (p->actual_length < s->setup_len) { 265 s->setup_len = p->actual_length; 266 } 267 if (p->pid == USB_TOKEN_IN) { 268 p->actual_length = 0; 269 usb_packet_copy(p, s->data_buf, s->setup_len); 270 } 271 } 272 273 /* ctrl complete function for devices which use usb_generic_handle_packet and 274 may return USB_RET_ASYNC from their handle_control callback. Device code 275 which does this *must* call this function instead of the normal 276 usb_packet_complete to complete their async control packets. */ 277 void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p) 278 { 279 if (p->status < 0) { 280 s->setup_state = SETUP_STATE_IDLE; 281 } 282 283 switch (s->setup_state) { 284 case SETUP_STATE_SETUP: 285 if (p->actual_length < s->setup_len) { 286 s->setup_len = p->actual_length; 287 } 288 s->setup_state = SETUP_STATE_DATA; 289 p->actual_length = 8; 290 break; 291 292 case SETUP_STATE_ACK: 293 s->setup_state = SETUP_STATE_IDLE; 294 p->actual_length = 0; 295 break; 296 297 case SETUP_STATE_PARAM: 298 if (p->actual_length < s->setup_len) { 299 s->setup_len = p->actual_length; 300 } 301 if (p->pid == USB_TOKEN_IN) { 302 p->actual_length = 0; 303 usb_packet_copy(p, s->data_buf, s->setup_len); 304 } 305 break; 306 307 default: 308 break; 309 } 310 usb_packet_complete(s, p); 311 } 312 313 /* XXX: fix overflow */ 314 int set_usb_string(uint8_t *buf, const char *str) 315 { 316 int len, i; 317 uint8_t *q; 318 319 q = buf; 320 len = strlen(str); 321 *q++ = 2 * len + 2; 322 *q++ = 3; 323 for(i = 0; i < len; i++) { 324 *q++ = str[i]; 325 *q++ = 0; 326 } 327 return q - buf; 328 } 329 330 USBDevice *usb_find_device(USBPort *port, uint8_t addr) 331 { 332 USBDevice *dev = port->dev; 333 334 if (dev == NULL || !dev->attached || dev->state != USB_STATE_DEFAULT) { 335 return NULL; 336 } 337 if (dev->addr == addr) { 338 return dev; 339 } 340 return usb_device_find_device(dev, addr); 341 } 342 343 static void usb_process_one(USBPacket *p) 344 { 345 USBDevice *dev = p->ep->dev; 346 347 /* 348 * Handlers expect status to be initialized to USB_RET_SUCCESS, but it 349 * can be USB_RET_NAK here from a previous usb_process_one() call, 350 * or USB_RET_ASYNC from going through usb_queue_one(). 351 */ 352 p->status = USB_RET_SUCCESS; 353 354 if (p->ep->nr == 0) { 355 /* control pipe */ 356 if (p->parameter) { 357 do_parameter(dev, p); 358 return; 359 } 360 switch (p->pid) { 361 case USB_TOKEN_SETUP: 362 do_token_setup(dev, p); 363 break; 364 case USB_TOKEN_IN: 365 do_token_in(dev, p); 366 break; 367 case USB_TOKEN_OUT: 368 do_token_out(dev, p); 369 break; 370 default: 371 p->status = USB_RET_STALL; 372 } 373 } else { 374 /* data pipe */ 375 usb_device_handle_data(dev, p); 376 } 377 } 378 379 static void usb_queue_one(USBPacket *p) 380 { 381 usb_packet_set_state(p, USB_PACKET_QUEUED); 382 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 383 p->status = USB_RET_ASYNC; 384 } 385 386 /* Hand over a packet to a device for processing. p->status == 387 USB_RET_ASYNC indicates the processing isn't finished yet, the 388 driver will call usb_packet_complete() when done processing it. */ 389 void usb_handle_packet(USBDevice *dev, USBPacket *p) 390 { 391 if (dev == NULL) { 392 p->status = USB_RET_NODEV; 393 return; 394 } 395 assert(dev == p->ep->dev); 396 assert(dev->state == USB_STATE_DEFAULT); 397 usb_packet_check_state(p, USB_PACKET_SETUP); 398 assert(p->ep != NULL); 399 400 /* Submitting a new packet clears halt */ 401 if (p->ep->halted) { 402 assert(QTAILQ_EMPTY(&p->ep->queue)); 403 p->ep->halted = false; 404 } 405 406 if (QTAILQ_EMPTY(&p->ep->queue) || p->ep->pipeline) { 407 usb_process_one(p); 408 if (p->status == USB_RET_ASYNC) { 409 assert(p->ep->type != USB_ENDPOINT_XFER_ISOC); 410 usb_packet_set_state(p, USB_PACKET_ASYNC); 411 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 412 } else if (p->status == USB_RET_ADD_TO_QUEUE) { 413 usb_queue_one(p); 414 } else { 415 /* 416 * When pipelining is enabled usb-devices must always return async, 417 * otherwise packets can complete out of order! 418 */ 419 assert(!p->ep->pipeline || QTAILQ_EMPTY(&p->ep->queue)); 420 if (p->status != USB_RET_NAK) { 421 usb_packet_set_state(p, USB_PACKET_COMPLETE); 422 } 423 } 424 } else { 425 usb_queue_one(p); 426 } 427 } 428 429 void usb_packet_complete_one(USBDevice *dev, USBPacket *p) 430 { 431 USBEndpoint *ep = p->ep; 432 433 assert(QTAILQ_FIRST(&ep->queue) == p); 434 assert(p->status != USB_RET_ASYNC && p->status != USB_RET_NAK); 435 436 if (p->status != USB_RET_SUCCESS || 437 (p->short_not_ok && (p->actual_length < p->iov.size))) { 438 ep->halted = true; 439 } 440 usb_packet_set_state(p, USB_PACKET_COMPLETE); 441 QTAILQ_REMOVE(&ep->queue, p, queue); 442 dev->port->ops->complete(dev->port, p); 443 } 444 445 /* Notify the controller that an async packet is complete. This should only 446 be called for packets previously deferred by returning USB_RET_ASYNC from 447 handle_packet. */ 448 void usb_packet_complete(USBDevice *dev, USBPacket *p) 449 { 450 USBEndpoint *ep = p->ep; 451 452 usb_packet_check_state(p, USB_PACKET_ASYNC); 453 usb_packet_complete_one(dev, p); 454 455 while (!QTAILQ_EMPTY(&ep->queue)) { 456 p = QTAILQ_FIRST(&ep->queue); 457 if (ep->halted) { 458 /* Empty the queue on a halt */ 459 p->status = USB_RET_REMOVE_FROM_QUEUE; 460 dev->port->ops->complete(dev->port, p); 461 continue; 462 } 463 if (p->state == USB_PACKET_ASYNC) { 464 break; 465 } 466 usb_packet_check_state(p, USB_PACKET_QUEUED); 467 usb_process_one(p); 468 if (p->status == USB_RET_ASYNC) { 469 usb_packet_set_state(p, USB_PACKET_ASYNC); 470 break; 471 } 472 usb_packet_complete_one(ep->dev, p); 473 } 474 } 475 476 /* Cancel an active packet. The packed must have been deferred by 477 returning USB_RET_ASYNC from handle_packet, and not yet 478 completed. */ 479 void usb_cancel_packet(USBPacket * p) 480 { 481 bool callback = (p->state == USB_PACKET_ASYNC); 482 assert(usb_packet_is_inflight(p)); 483 usb_packet_set_state(p, USB_PACKET_CANCELED); 484 QTAILQ_REMOVE(&p->ep->queue, p, queue); 485 if (callback) { 486 usb_device_cancel_packet(p->ep->dev, p); 487 } 488 } 489 490 491 void usb_packet_init(USBPacket *p) 492 { 493 qemu_iovec_init(&p->iov, 1); 494 } 495 496 static const char *usb_packet_state_name(USBPacketState state) 497 { 498 static const char *name[] = { 499 [USB_PACKET_UNDEFINED] = "undef", 500 [USB_PACKET_SETUP] = "setup", 501 [USB_PACKET_QUEUED] = "queued", 502 [USB_PACKET_ASYNC] = "async", 503 [USB_PACKET_COMPLETE] = "complete", 504 [USB_PACKET_CANCELED] = "canceled", 505 }; 506 if (state < ARRAY_SIZE(name)) { 507 return name[state]; 508 } 509 return "INVALID"; 510 } 511 512 void usb_packet_check_state(USBPacket *p, USBPacketState expected) 513 { 514 USBDevice *dev; 515 USBBus *bus; 516 517 if (p->state == expected) { 518 return; 519 } 520 dev = p->ep->dev; 521 bus = usb_bus_from_device(dev); 522 trace_usb_packet_state_fault(bus->busnr, dev->port->path, p->ep->nr, p, 523 usb_packet_state_name(p->state), 524 usb_packet_state_name(expected)); 525 assert(!"usb packet state check failed"); 526 } 527 528 void usb_packet_set_state(USBPacket *p, USBPacketState state) 529 { 530 if (p->ep) { 531 USBDevice *dev = p->ep->dev; 532 USBBus *bus = usb_bus_from_device(dev); 533 trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, p, 534 usb_packet_state_name(p->state), 535 usb_packet_state_name(state)); 536 } else { 537 trace_usb_packet_state_change(-1, "", -1, p, 538 usb_packet_state_name(p->state), 539 usb_packet_state_name(state)); 540 } 541 p->state = state; 542 } 543 544 void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep, uint64_t id, 545 bool short_not_ok, bool int_req) 546 { 547 assert(!usb_packet_is_inflight(p)); 548 assert(p->iov.iov != NULL); 549 p->id = id; 550 p->pid = pid; 551 p->ep = ep; 552 p->status = USB_RET_SUCCESS; 553 p->actual_length = 0; 554 p->parameter = 0; 555 p->short_not_ok = short_not_ok; 556 p->int_req = int_req; 557 p->combined = NULL; 558 qemu_iovec_reset(&p->iov); 559 usb_packet_set_state(p, USB_PACKET_SETUP); 560 } 561 562 void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len) 563 { 564 qemu_iovec_add(&p->iov, ptr, len); 565 } 566 567 void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes) 568 { 569 assert(p->actual_length >= 0); 570 assert(p->actual_length + bytes <= p->iov.size); 571 switch (p->pid) { 572 case USB_TOKEN_SETUP: 573 case USB_TOKEN_OUT: 574 iov_to_buf(p->iov.iov, p->iov.niov, p->actual_length, ptr, bytes); 575 break; 576 case USB_TOKEN_IN: 577 iov_from_buf(p->iov.iov, p->iov.niov, p->actual_length, ptr, bytes); 578 break; 579 default: 580 fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid); 581 abort(); 582 } 583 p->actual_length += bytes; 584 } 585 586 void usb_packet_skip(USBPacket *p, size_t bytes) 587 { 588 assert(p->actual_length >= 0); 589 assert(p->actual_length + bytes <= p->iov.size); 590 if (p->pid == USB_TOKEN_IN) { 591 iov_memset(p->iov.iov, p->iov.niov, p->actual_length, 0, bytes); 592 } 593 p->actual_length += bytes; 594 } 595 596 void usb_packet_cleanup(USBPacket *p) 597 { 598 assert(!usb_packet_is_inflight(p)); 599 qemu_iovec_destroy(&p->iov); 600 } 601 602 void usb_ep_reset(USBDevice *dev) 603 { 604 int ep; 605 606 dev->ep_ctl.nr = 0; 607 dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL; 608 dev->ep_ctl.ifnum = 0; 609 dev->ep_ctl.dev = dev; 610 dev->ep_ctl.pipeline = false; 611 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 612 dev->ep_in[ep].nr = ep + 1; 613 dev->ep_out[ep].nr = ep + 1; 614 dev->ep_in[ep].pid = USB_TOKEN_IN; 615 dev->ep_out[ep].pid = USB_TOKEN_OUT; 616 dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID; 617 dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID; 618 dev->ep_in[ep].ifnum = USB_INTERFACE_INVALID; 619 dev->ep_out[ep].ifnum = USB_INTERFACE_INVALID; 620 dev->ep_in[ep].dev = dev; 621 dev->ep_out[ep].dev = dev; 622 dev->ep_in[ep].pipeline = false; 623 dev->ep_out[ep].pipeline = false; 624 } 625 } 626 627 void usb_ep_init(USBDevice *dev) 628 { 629 int ep; 630 631 usb_ep_reset(dev); 632 QTAILQ_INIT(&dev->ep_ctl.queue); 633 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 634 QTAILQ_INIT(&dev->ep_in[ep].queue); 635 QTAILQ_INIT(&dev->ep_out[ep].queue); 636 } 637 } 638 639 void usb_ep_dump(USBDevice *dev) 640 { 641 static const char *tname[] = { 642 [USB_ENDPOINT_XFER_CONTROL] = "control", 643 [USB_ENDPOINT_XFER_ISOC] = "isoc", 644 [USB_ENDPOINT_XFER_BULK] = "bulk", 645 [USB_ENDPOINT_XFER_INT] = "int", 646 }; 647 int ifnum, ep, first; 648 649 fprintf(stderr, "Device \"%s\", config %d\n", 650 dev->product_desc, dev->configuration); 651 for (ifnum = 0; ifnum < 16; ifnum++) { 652 first = 1; 653 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 654 if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID && 655 dev->ep_in[ep].ifnum == ifnum) { 656 if (first) { 657 first = 0; 658 fprintf(stderr, " Interface %d, alternative %d\n", 659 ifnum, dev->altsetting[ifnum]); 660 } 661 fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep, 662 tname[dev->ep_in[ep].type], 663 dev->ep_in[ep].max_packet_size); 664 } 665 if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID && 666 dev->ep_out[ep].ifnum == ifnum) { 667 if (first) { 668 first = 0; 669 fprintf(stderr, " Interface %d, alternative %d\n", 670 ifnum, dev->altsetting[ifnum]); 671 } 672 fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep, 673 tname[dev->ep_out[ep].type], 674 dev->ep_out[ep].max_packet_size); 675 } 676 } 677 } 678 fprintf(stderr, "--\n"); 679 } 680 681 struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep) 682 { 683 struct USBEndpoint *eps; 684 685 if (dev == NULL) { 686 return NULL; 687 } 688 eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out; 689 if (ep == 0) { 690 return &dev->ep_ctl; 691 } 692 assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); 693 assert(ep > 0 && ep <= USB_MAX_ENDPOINTS); 694 return eps + ep - 1; 695 } 696 697 uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep) 698 { 699 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 700 return uep->type; 701 } 702 703 void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type) 704 { 705 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 706 uep->type = type; 707 } 708 709 uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep) 710 { 711 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 712 return uep->ifnum; 713 } 714 715 void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum) 716 { 717 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 718 uep->ifnum = ifnum; 719 } 720 721 void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep, 722 uint16_t raw) 723 { 724 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 725 int size, microframes; 726 727 size = raw & 0x7ff; 728 switch ((raw >> 11) & 3) { 729 case 1: 730 microframes = 2; 731 break; 732 case 2: 733 microframes = 3; 734 break; 735 default: 736 microframes = 1; 737 break; 738 } 739 uep->max_packet_size = size * microframes; 740 } 741 742 int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep) 743 { 744 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 745 return uep->max_packet_size; 746 } 747 748 void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled) 749 { 750 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 751 uep->pipeline = enabled; 752 } 753 754 USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep, 755 uint64_t id) 756 { 757 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 758 USBPacket *p; 759 760 while ((p = QTAILQ_FIRST(&uep->queue)) != NULL) { 761 if (p->id == id) { 762 return p; 763 } 764 } 765 766 return NULL; 767 } 768