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 "qemu/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, unsigned int stream) 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, stream); 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 || p->stream) { 407 usb_process_one(p); 408 if (p->status == USB_RET_ASYNC) { 409 /* hcd drivers cannot handle async for isoc */ 410 assert(p->ep->type != USB_ENDPOINT_XFER_ISOC); 411 /* using async for interrupt packets breaks migration */ 412 assert(p->ep->type != USB_ENDPOINT_XFER_INT || 413 (dev->flags & (1 << USB_DEV_FLAG_IS_HOST))); 414 usb_packet_set_state(p, USB_PACKET_ASYNC); 415 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 416 } else if (p->status == USB_RET_ADD_TO_QUEUE) { 417 usb_queue_one(p); 418 } else { 419 /* 420 * When pipelining is enabled usb-devices must always return async, 421 * otherwise packets can complete out of order! 422 */ 423 assert(p->stream || !p->ep->pipeline || 424 QTAILQ_EMPTY(&p->ep->queue)); 425 if (p->status != USB_RET_NAK) { 426 usb_packet_set_state(p, USB_PACKET_COMPLETE); 427 } 428 } 429 } else { 430 usb_queue_one(p); 431 } 432 } 433 434 void usb_packet_complete_one(USBDevice *dev, USBPacket *p) 435 { 436 USBEndpoint *ep = p->ep; 437 438 assert(p->stream || QTAILQ_FIRST(&ep->queue) == p); 439 assert(p->status != USB_RET_ASYNC && p->status != USB_RET_NAK); 440 441 if (p->status != USB_RET_SUCCESS || 442 (p->short_not_ok && (p->actual_length < p->iov.size))) { 443 ep->halted = true; 444 } 445 usb_packet_set_state(p, USB_PACKET_COMPLETE); 446 QTAILQ_REMOVE(&ep->queue, p, queue); 447 dev->port->ops->complete(dev->port, p); 448 } 449 450 /* Notify the controller that an async packet is complete. This should only 451 be called for packets previously deferred by returning USB_RET_ASYNC from 452 handle_packet. */ 453 void usb_packet_complete(USBDevice *dev, USBPacket *p) 454 { 455 USBEndpoint *ep = p->ep; 456 457 usb_packet_check_state(p, USB_PACKET_ASYNC); 458 usb_packet_complete_one(dev, p); 459 460 while (!QTAILQ_EMPTY(&ep->queue)) { 461 p = QTAILQ_FIRST(&ep->queue); 462 if (ep->halted) { 463 /* Empty the queue on a halt */ 464 p->status = USB_RET_REMOVE_FROM_QUEUE; 465 dev->port->ops->complete(dev->port, p); 466 continue; 467 } 468 if (p->state == USB_PACKET_ASYNC) { 469 break; 470 } 471 usb_packet_check_state(p, USB_PACKET_QUEUED); 472 usb_process_one(p); 473 if (p->status == USB_RET_ASYNC) { 474 usb_packet_set_state(p, USB_PACKET_ASYNC); 475 break; 476 } 477 usb_packet_complete_one(ep->dev, p); 478 } 479 } 480 481 /* Cancel an active packet. The packed must have been deferred by 482 returning USB_RET_ASYNC from handle_packet, and not yet 483 completed. */ 484 void usb_cancel_packet(USBPacket * p) 485 { 486 bool callback = (p->state == USB_PACKET_ASYNC); 487 assert(usb_packet_is_inflight(p)); 488 usb_packet_set_state(p, USB_PACKET_CANCELED); 489 QTAILQ_REMOVE(&p->ep->queue, p, queue); 490 if (callback) { 491 usb_device_cancel_packet(p->ep->dev, p); 492 } 493 } 494 495 496 void usb_packet_init(USBPacket *p) 497 { 498 qemu_iovec_init(&p->iov, 1); 499 } 500 501 static const char *usb_packet_state_name(USBPacketState state) 502 { 503 static const char *name[] = { 504 [USB_PACKET_UNDEFINED] = "undef", 505 [USB_PACKET_SETUP] = "setup", 506 [USB_PACKET_QUEUED] = "queued", 507 [USB_PACKET_ASYNC] = "async", 508 [USB_PACKET_COMPLETE] = "complete", 509 [USB_PACKET_CANCELED] = "canceled", 510 }; 511 if (state < ARRAY_SIZE(name)) { 512 return name[state]; 513 } 514 return "INVALID"; 515 } 516 517 void usb_packet_check_state(USBPacket *p, USBPacketState expected) 518 { 519 USBDevice *dev; 520 USBBus *bus; 521 522 if (p->state == expected) { 523 return; 524 } 525 dev = p->ep->dev; 526 bus = usb_bus_from_device(dev); 527 trace_usb_packet_state_fault(bus->busnr, dev->port->path, p->ep->nr, p, 528 usb_packet_state_name(p->state), 529 usb_packet_state_name(expected)); 530 assert(!"usb packet state check failed"); 531 } 532 533 void usb_packet_set_state(USBPacket *p, USBPacketState state) 534 { 535 if (p->ep) { 536 USBDevice *dev = p->ep->dev; 537 USBBus *bus = usb_bus_from_device(dev); 538 trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, p, 539 usb_packet_state_name(p->state), 540 usb_packet_state_name(state)); 541 } else { 542 trace_usb_packet_state_change(-1, "", -1, p, 543 usb_packet_state_name(p->state), 544 usb_packet_state_name(state)); 545 } 546 p->state = state; 547 } 548 549 void usb_packet_setup(USBPacket *p, int pid, 550 USBEndpoint *ep, unsigned int stream, 551 uint64_t id, bool short_not_ok, bool int_req) 552 { 553 assert(!usb_packet_is_inflight(p)); 554 assert(p->iov.iov != NULL); 555 p->id = id; 556 p->pid = pid; 557 p->ep = ep; 558 p->stream = stream; 559 p->status = USB_RET_SUCCESS; 560 p->actual_length = 0; 561 p->parameter = 0; 562 p->short_not_ok = short_not_ok; 563 p->int_req = int_req; 564 p->combined = NULL; 565 qemu_iovec_reset(&p->iov); 566 usb_packet_set_state(p, USB_PACKET_SETUP); 567 } 568 569 void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len) 570 { 571 qemu_iovec_add(&p->iov, ptr, len); 572 } 573 574 void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes) 575 { 576 QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov; 577 578 assert(p->actual_length >= 0); 579 assert(p->actual_length + bytes <= iov->size); 580 switch (p->pid) { 581 case USB_TOKEN_SETUP: 582 case USB_TOKEN_OUT: 583 iov_to_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes); 584 break; 585 case USB_TOKEN_IN: 586 iov_from_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes); 587 break; 588 default: 589 fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid); 590 abort(); 591 } 592 p->actual_length += bytes; 593 } 594 595 void usb_packet_skip(USBPacket *p, size_t bytes) 596 { 597 QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov; 598 599 assert(p->actual_length >= 0); 600 assert(p->actual_length + bytes <= iov->size); 601 if (p->pid == USB_TOKEN_IN) { 602 iov_memset(iov->iov, iov->niov, p->actual_length, 0, bytes); 603 } 604 p->actual_length += bytes; 605 } 606 607 size_t usb_packet_size(USBPacket *p) 608 { 609 return p->combined ? p->combined->iov.size : p->iov.size; 610 } 611 612 void usb_packet_cleanup(USBPacket *p) 613 { 614 assert(!usb_packet_is_inflight(p)); 615 qemu_iovec_destroy(&p->iov); 616 } 617 618 void usb_ep_reset(USBDevice *dev) 619 { 620 int ep; 621 622 dev->ep_ctl.nr = 0; 623 dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL; 624 dev->ep_ctl.ifnum = 0; 625 dev->ep_ctl.dev = dev; 626 dev->ep_ctl.pipeline = false; 627 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 628 dev->ep_in[ep].nr = ep + 1; 629 dev->ep_out[ep].nr = ep + 1; 630 dev->ep_in[ep].pid = USB_TOKEN_IN; 631 dev->ep_out[ep].pid = USB_TOKEN_OUT; 632 dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID; 633 dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID; 634 dev->ep_in[ep].ifnum = USB_INTERFACE_INVALID; 635 dev->ep_out[ep].ifnum = USB_INTERFACE_INVALID; 636 dev->ep_in[ep].dev = dev; 637 dev->ep_out[ep].dev = dev; 638 dev->ep_in[ep].pipeline = false; 639 dev->ep_out[ep].pipeline = false; 640 } 641 } 642 643 void usb_ep_init(USBDevice *dev) 644 { 645 int ep; 646 647 usb_ep_reset(dev); 648 QTAILQ_INIT(&dev->ep_ctl.queue); 649 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 650 QTAILQ_INIT(&dev->ep_in[ep].queue); 651 QTAILQ_INIT(&dev->ep_out[ep].queue); 652 } 653 } 654 655 void usb_ep_dump(USBDevice *dev) 656 { 657 static const char *tname[] = { 658 [USB_ENDPOINT_XFER_CONTROL] = "control", 659 [USB_ENDPOINT_XFER_ISOC] = "isoc", 660 [USB_ENDPOINT_XFER_BULK] = "bulk", 661 [USB_ENDPOINT_XFER_INT] = "int", 662 }; 663 int ifnum, ep, first; 664 665 fprintf(stderr, "Device \"%s\", config %d\n", 666 dev->product_desc, dev->configuration); 667 for (ifnum = 0; ifnum < 16; ifnum++) { 668 first = 1; 669 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 670 if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID && 671 dev->ep_in[ep].ifnum == ifnum) { 672 if (first) { 673 first = 0; 674 fprintf(stderr, " Interface %d, alternative %d\n", 675 ifnum, dev->altsetting[ifnum]); 676 } 677 fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep, 678 tname[dev->ep_in[ep].type], 679 dev->ep_in[ep].max_packet_size); 680 } 681 if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID && 682 dev->ep_out[ep].ifnum == ifnum) { 683 if (first) { 684 first = 0; 685 fprintf(stderr, " Interface %d, alternative %d\n", 686 ifnum, dev->altsetting[ifnum]); 687 } 688 fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep, 689 tname[dev->ep_out[ep].type], 690 dev->ep_out[ep].max_packet_size); 691 } 692 } 693 } 694 fprintf(stderr, "--\n"); 695 } 696 697 struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep) 698 { 699 struct USBEndpoint *eps; 700 701 if (dev == NULL) { 702 return NULL; 703 } 704 eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out; 705 if (ep == 0) { 706 return &dev->ep_ctl; 707 } 708 assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); 709 assert(ep > 0 && ep <= USB_MAX_ENDPOINTS); 710 return eps + ep - 1; 711 } 712 713 uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep) 714 { 715 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 716 return uep->type; 717 } 718 719 void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type) 720 { 721 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 722 uep->type = type; 723 } 724 725 uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep) 726 { 727 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 728 return uep->ifnum; 729 } 730 731 void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum) 732 { 733 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 734 uep->ifnum = ifnum; 735 } 736 737 void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep, 738 uint16_t raw) 739 { 740 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 741 int size, microframes; 742 743 size = raw & 0x7ff; 744 switch ((raw >> 11) & 3) { 745 case 1: 746 microframes = 2; 747 break; 748 case 2: 749 microframes = 3; 750 break; 751 default: 752 microframes = 1; 753 break; 754 } 755 uep->max_packet_size = size * microframes; 756 } 757 758 int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep) 759 { 760 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 761 return uep->max_packet_size; 762 } 763 764 void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled) 765 { 766 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 767 uep->pipeline = enabled; 768 } 769 770 void usb_ep_set_halted(USBDevice *dev, int pid, int ep, bool halted) 771 { 772 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 773 uep->halted = halted; 774 } 775 776 USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep, 777 uint64_t id) 778 { 779 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 780 USBPacket *p; 781 782 QTAILQ_FOREACH(p, &uep->queue, queue) { 783 if (p->id == id) { 784 return p; 785 } 786 } 787 788 return NULL; 789 } 790