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_pick_speed(USBPort *port) 32 { 33 static const int speeds[] = { 34 USB_SPEED_SUPER, 35 USB_SPEED_HIGH, 36 USB_SPEED_FULL, 37 USB_SPEED_LOW, 38 }; 39 USBDevice *udev = port->dev; 40 int i; 41 42 for (i = 0; i < ARRAY_SIZE(speeds); i++) { 43 if ((udev->speedmask & (1 << speeds[i])) && 44 (port->speedmask & (1 << speeds[i]))) { 45 udev->speed = speeds[i]; 46 return; 47 } 48 } 49 } 50 51 void usb_attach(USBPort *port) 52 { 53 USBDevice *dev = port->dev; 54 55 assert(dev != NULL); 56 assert(dev->attached); 57 assert(dev->state == USB_STATE_NOTATTACHED); 58 usb_pick_speed(port); 59 port->ops->attach(port); 60 dev->state = USB_STATE_ATTACHED; 61 usb_device_handle_attach(dev); 62 } 63 64 void usb_detach(USBPort *port) 65 { 66 USBDevice *dev = port->dev; 67 68 assert(dev != NULL); 69 assert(dev->state != USB_STATE_NOTATTACHED); 70 port->ops->detach(port); 71 dev->state = USB_STATE_NOTATTACHED; 72 } 73 74 void usb_port_reset(USBPort *port) 75 { 76 USBDevice *dev = port->dev; 77 78 assert(dev != NULL); 79 usb_detach(port); 80 usb_attach(port); 81 usb_device_reset(dev); 82 } 83 84 void usb_device_reset(USBDevice *dev) 85 { 86 if (dev == NULL || !dev->attached) { 87 return; 88 } 89 dev->remote_wakeup = 0; 90 dev->addr = 0; 91 dev->state = USB_STATE_DEFAULT; 92 usb_device_handle_reset(dev); 93 } 94 95 void usb_wakeup(USBEndpoint *ep, unsigned int stream) 96 { 97 USBDevice *dev = ep->dev; 98 USBBus *bus = usb_bus_from_device(dev); 99 100 if (dev->remote_wakeup && dev->port && dev->port->ops->wakeup) { 101 dev->port->ops->wakeup(dev->port); 102 } 103 if (bus->ops->wakeup_endpoint) { 104 bus->ops->wakeup_endpoint(bus, ep, stream); 105 } 106 } 107 108 /**********************/ 109 110 /* generic USB device helpers (you are not forced to use them when 111 writing your USB device driver, but they help handling the 112 protocol) 113 */ 114 115 #define SETUP_STATE_IDLE 0 116 #define SETUP_STATE_SETUP 1 117 #define SETUP_STATE_DATA 2 118 #define SETUP_STATE_ACK 3 119 #define SETUP_STATE_PARAM 4 120 121 static void do_token_setup(USBDevice *s, USBPacket *p) 122 { 123 int request, value, index; 124 125 if (p->iov.size != 8) { 126 p->status = USB_RET_STALL; 127 return; 128 } 129 130 usb_packet_copy(p, s->setup_buf, p->iov.size); 131 p->actual_length = 0; 132 s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; 133 s->setup_index = 0; 134 135 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 136 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 137 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 138 139 if (s->setup_buf[0] & USB_DIR_IN) { 140 usb_device_handle_control(s, p, request, value, index, 141 s->setup_len, s->data_buf); 142 if (p->status == USB_RET_ASYNC) { 143 s->setup_state = SETUP_STATE_SETUP; 144 } 145 if (p->status != USB_RET_SUCCESS) { 146 return; 147 } 148 149 if (p->actual_length < s->setup_len) { 150 s->setup_len = p->actual_length; 151 } 152 s->setup_state = SETUP_STATE_DATA; 153 } else { 154 if (s->setup_len > sizeof(s->data_buf)) { 155 fprintf(stderr, 156 "usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n", 157 s->setup_len, sizeof(s->data_buf)); 158 p->status = USB_RET_STALL; 159 return; 160 } 161 if (s->setup_len == 0) 162 s->setup_state = SETUP_STATE_ACK; 163 else 164 s->setup_state = SETUP_STATE_DATA; 165 } 166 167 p->actual_length = 8; 168 } 169 170 static void do_token_in(USBDevice *s, USBPacket *p) 171 { 172 int request, value, index; 173 174 assert(p->ep->nr == 0); 175 176 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 177 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 178 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 179 180 switch(s->setup_state) { 181 case SETUP_STATE_ACK: 182 if (!(s->setup_buf[0] & USB_DIR_IN)) { 183 usb_device_handle_control(s, p, request, value, index, 184 s->setup_len, s->data_buf); 185 if (p->status == USB_RET_ASYNC) { 186 return; 187 } 188 s->setup_state = SETUP_STATE_IDLE; 189 p->actual_length = 0; 190 } 191 break; 192 193 case SETUP_STATE_DATA: 194 if (s->setup_buf[0] & USB_DIR_IN) { 195 int len = s->setup_len - s->setup_index; 196 if (len > p->iov.size) { 197 len = p->iov.size; 198 } 199 usb_packet_copy(p, s->data_buf + s->setup_index, len); 200 s->setup_index += len; 201 if (s->setup_index >= s->setup_len) { 202 s->setup_state = SETUP_STATE_ACK; 203 } 204 return; 205 } 206 s->setup_state = SETUP_STATE_IDLE; 207 p->status = USB_RET_STALL; 208 break; 209 210 default: 211 p->status = USB_RET_STALL; 212 } 213 } 214 215 static void do_token_out(USBDevice *s, USBPacket *p) 216 { 217 assert(p->ep->nr == 0); 218 219 switch(s->setup_state) { 220 case SETUP_STATE_ACK: 221 if (s->setup_buf[0] & USB_DIR_IN) { 222 s->setup_state = SETUP_STATE_IDLE; 223 /* transfer OK */ 224 } else { 225 /* ignore additional output */ 226 } 227 break; 228 229 case SETUP_STATE_DATA: 230 if (!(s->setup_buf[0] & USB_DIR_IN)) { 231 int len = s->setup_len - s->setup_index; 232 if (len > p->iov.size) { 233 len = p->iov.size; 234 } 235 usb_packet_copy(p, s->data_buf + s->setup_index, len); 236 s->setup_index += len; 237 if (s->setup_index >= s->setup_len) { 238 s->setup_state = SETUP_STATE_ACK; 239 } 240 return; 241 } 242 s->setup_state = SETUP_STATE_IDLE; 243 p->status = USB_RET_STALL; 244 break; 245 246 default: 247 p->status = USB_RET_STALL; 248 } 249 } 250 251 static void do_parameter(USBDevice *s, USBPacket *p) 252 { 253 int i, request, value, index; 254 255 for (i = 0; i < 8; i++) { 256 s->setup_buf[i] = p->parameter >> (i*8); 257 } 258 259 s->setup_state = SETUP_STATE_PARAM; 260 s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6]; 261 s->setup_index = 0; 262 263 request = (s->setup_buf[0] << 8) | s->setup_buf[1]; 264 value = (s->setup_buf[3] << 8) | s->setup_buf[2]; 265 index = (s->setup_buf[5] << 8) | s->setup_buf[4]; 266 267 if (s->setup_len > sizeof(s->data_buf)) { 268 fprintf(stderr, 269 "usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n", 270 s->setup_len, sizeof(s->data_buf)); 271 p->status = USB_RET_STALL; 272 return; 273 } 274 275 if (p->pid == USB_TOKEN_OUT) { 276 usb_packet_copy(p, s->data_buf, s->setup_len); 277 } 278 279 usb_device_handle_control(s, p, request, value, index, 280 s->setup_len, s->data_buf); 281 if (p->status == USB_RET_ASYNC) { 282 return; 283 } 284 285 if (p->actual_length < s->setup_len) { 286 s->setup_len = p->actual_length; 287 } 288 if (p->pid == USB_TOKEN_IN) { 289 p->actual_length = 0; 290 usb_packet_copy(p, s->data_buf, s->setup_len); 291 } 292 } 293 294 /* ctrl complete function for devices which use usb_generic_handle_packet and 295 may return USB_RET_ASYNC from their handle_control callback. Device code 296 which does this *must* call this function instead of the normal 297 usb_packet_complete to complete their async control packets. */ 298 void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p) 299 { 300 if (p->status < 0) { 301 s->setup_state = SETUP_STATE_IDLE; 302 } 303 304 switch (s->setup_state) { 305 case SETUP_STATE_SETUP: 306 if (p->actual_length < s->setup_len) { 307 s->setup_len = p->actual_length; 308 } 309 s->setup_state = SETUP_STATE_DATA; 310 p->actual_length = 8; 311 break; 312 313 case SETUP_STATE_ACK: 314 s->setup_state = SETUP_STATE_IDLE; 315 p->actual_length = 0; 316 break; 317 318 case SETUP_STATE_PARAM: 319 if (p->actual_length < s->setup_len) { 320 s->setup_len = p->actual_length; 321 } 322 if (p->pid == USB_TOKEN_IN) { 323 p->actual_length = 0; 324 usb_packet_copy(p, s->data_buf, s->setup_len); 325 } 326 break; 327 328 default: 329 break; 330 } 331 usb_packet_complete(s, p); 332 } 333 334 USBDevice *usb_find_device(USBPort *port, uint8_t addr) 335 { 336 USBDevice *dev = port->dev; 337 338 if (dev == NULL || !dev->attached || dev->state != USB_STATE_DEFAULT) { 339 return NULL; 340 } 341 if (dev->addr == addr) { 342 return dev; 343 } 344 return usb_device_find_device(dev, addr); 345 } 346 347 static void usb_process_one(USBPacket *p) 348 { 349 USBDevice *dev = p->ep->dev; 350 351 /* 352 * Handlers expect status to be initialized to USB_RET_SUCCESS, but it 353 * can be USB_RET_NAK here from a previous usb_process_one() call, 354 * or USB_RET_ASYNC from going through usb_queue_one(). 355 */ 356 p->status = USB_RET_SUCCESS; 357 358 if (p->ep->nr == 0) { 359 /* control pipe */ 360 if (p->parameter) { 361 do_parameter(dev, p); 362 return; 363 } 364 switch (p->pid) { 365 case USB_TOKEN_SETUP: 366 do_token_setup(dev, p); 367 break; 368 case USB_TOKEN_IN: 369 do_token_in(dev, p); 370 break; 371 case USB_TOKEN_OUT: 372 do_token_out(dev, p); 373 break; 374 default: 375 p->status = USB_RET_STALL; 376 } 377 } else { 378 /* data pipe */ 379 usb_device_handle_data(dev, p); 380 } 381 } 382 383 static void usb_queue_one(USBPacket *p) 384 { 385 usb_packet_set_state(p, USB_PACKET_QUEUED); 386 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 387 p->status = USB_RET_ASYNC; 388 } 389 390 /* Hand over a packet to a device for processing. p->status == 391 USB_RET_ASYNC indicates the processing isn't finished yet, the 392 driver will call usb_packet_complete() when done processing it. */ 393 void usb_handle_packet(USBDevice *dev, USBPacket *p) 394 { 395 if (dev == NULL) { 396 p->status = USB_RET_NODEV; 397 return; 398 } 399 assert(dev == p->ep->dev); 400 assert(dev->state == USB_STATE_DEFAULT); 401 usb_packet_check_state(p, USB_PACKET_SETUP); 402 assert(p->ep != NULL); 403 404 /* Submitting a new packet clears halt */ 405 if (p->ep->halted) { 406 assert(QTAILQ_EMPTY(&p->ep->queue)); 407 p->ep->halted = false; 408 } 409 410 if (QTAILQ_EMPTY(&p->ep->queue) || p->ep->pipeline || p->stream) { 411 usb_process_one(p); 412 if (p->status == USB_RET_ASYNC) { 413 /* hcd drivers cannot handle async for isoc */ 414 assert(p->ep->type != USB_ENDPOINT_XFER_ISOC); 415 /* using async for interrupt packets breaks migration */ 416 assert(p->ep->type != USB_ENDPOINT_XFER_INT || 417 (dev->flags & (1 << USB_DEV_FLAG_IS_HOST))); 418 usb_packet_set_state(p, USB_PACKET_ASYNC); 419 QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue); 420 } else if (p->status == USB_RET_ADD_TO_QUEUE) { 421 usb_queue_one(p); 422 } else { 423 /* 424 * When pipelining is enabled usb-devices must always return async, 425 * otherwise packets can complete out of order! 426 */ 427 assert(p->stream || !p->ep->pipeline || 428 QTAILQ_EMPTY(&p->ep->queue)); 429 if (p->status != USB_RET_NAK) { 430 usb_packet_set_state(p, USB_PACKET_COMPLETE); 431 } 432 } 433 } else { 434 usb_queue_one(p); 435 } 436 } 437 438 void usb_packet_complete_one(USBDevice *dev, USBPacket *p) 439 { 440 USBEndpoint *ep = p->ep; 441 442 assert(p->stream || QTAILQ_FIRST(&ep->queue) == p); 443 assert(p->status != USB_RET_ASYNC && p->status != USB_RET_NAK); 444 445 if (p->status != USB_RET_SUCCESS || 446 (p->short_not_ok && (p->actual_length < p->iov.size))) { 447 ep->halted = true; 448 } 449 usb_packet_set_state(p, USB_PACKET_COMPLETE); 450 QTAILQ_REMOVE(&ep->queue, p, queue); 451 dev->port->ops->complete(dev->port, p); 452 } 453 454 /* Notify the controller that an async packet is complete. This should only 455 be called for packets previously deferred by returning USB_RET_ASYNC from 456 handle_packet. */ 457 void usb_packet_complete(USBDevice *dev, USBPacket *p) 458 { 459 USBEndpoint *ep = p->ep; 460 461 usb_packet_check_state(p, USB_PACKET_ASYNC); 462 usb_packet_complete_one(dev, p); 463 464 while (!QTAILQ_EMPTY(&ep->queue)) { 465 p = QTAILQ_FIRST(&ep->queue); 466 if (ep->halted) { 467 /* Empty the queue on a halt */ 468 p->status = USB_RET_REMOVE_FROM_QUEUE; 469 dev->port->ops->complete(dev->port, p); 470 continue; 471 } 472 if (p->state == USB_PACKET_ASYNC) { 473 break; 474 } 475 usb_packet_check_state(p, USB_PACKET_QUEUED); 476 usb_process_one(p); 477 if (p->status == USB_RET_ASYNC) { 478 usb_packet_set_state(p, USB_PACKET_ASYNC); 479 break; 480 } 481 usb_packet_complete_one(ep->dev, p); 482 } 483 } 484 485 /* Cancel an active packet. The packed must have been deferred by 486 returning USB_RET_ASYNC from handle_packet, and not yet 487 completed. */ 488 void usb_cancel_packet(USBPacket * p) 489 { 490 bool callback = (p->state == USB_PACKET_ASYNC); 491 assert(usb_packet_is_inflight(p)); 492 usb_packet_set_state(p, USB_PACKET_CANCELED); 493 QTAILQ_REMOVE(&p->ep->queue, p, queue); 494 if (callback) { 495 usb_device_cancel_packet(p->ep->dev, p); 496 } 497 } 498 499 500 void usb_packet_init(USBPacket *p) 501 { 502 qemu_iovec_init(&p->iov, 1); 503 } 504 505 static const char *usb_packet_state_name(USBPacketState state) 506 { 507 static const char *name[] = { 508 [USB_PACKET_UNDEFINED] = "undef", 509 [USB_PACKET_SETUP] = "setup", 510 [USB_PACKET_QUEUED] = "queued", 511 [USB_PACKET_ASYNC] = "async", 512 [USB_PACKET_COMPLETE] = "complete", 513 [USB_PACKET_CANCELED] = "canceled", 514 }; 515 if (state < ARRAY_SIZE(name)) { 516 return name[state]; 517 } 518 return "INVALID"; 519 } 520 521 void usb_packet_check_state(USBPacket *p, USBPacketState expected) 522 { 523 USBDevice *dev; 524 USBBus *bus; 525 526 if (p->state == expected) { 527 return; 528 } 529 dev = p->ep->dev; 530 bus = usb_bus_from_device(dev); 531 trace_usb_packet_state_fault(bus->busnr, dev->port->path, p->ep->nr, p, 532 usb_packet_state_name(p->state), 533 usb_packet_state_name(expected)); 534 assert(!"usb packet state check failed"); 535 } 536 537 void usb_packet_set_state(USBPacket *p, USBPacketState state) 538 { 539 if (p->ep) { 540 USBDevice *dev = p->ep->dev; 541 USBBus *bus = usb_bus_from_device(dev); 542 trace_usb_packet_state_change(bus->busnr, dev->port->path, p->ep->nr, p, 543 usb_packet_state_name(p->state), 544 usb_packet_state_name(state)); 545 } else { 546 trace_usb_packet_state_change(-1, "", -1, p, 547 usb_packet_state_name(p->state), 548 usb_packet_state_name(state)); 549 } 550 p->state = state; 551 } 552 553 void usb_packet_setup(USBPacket *p, int pid, 554 USBEndpoint *ep, unsigned int stream, 555 uint64_t id, bool short_not_ok, bool int_req) 556 { 557 assert(!usb_packet_is_inflight(p)); 558 assert(p->iov.iov != NULL); 559 p->id = id; 560 p->pid = pid; 561 p->ep = ep; 562 p->stream = stream; 563 p->status = USB_RET_SUCCESS; 564 p->actual_length = 0; 565 p->parameter = 0; 566 p->short_not_ok = short_not_ok; 567 p->int_req = int_req; 568 p->combined = NULL; 569 qemu_iovec_reset(&p->iov); 570 usb_packet_set_state(p, USB_PACKET_SETUP); 571 } 572 573 void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len) 574 { 575 qemu_iovec_add(&p->iov, ptr, len); 576 } 577 578 void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes) 579 { 580 QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov; 581 582 assert(p->actual_length >= 0); 583 assert(p->actual_length + bytes <= iov->size); 584 switch (p->pid) { 585 case USB_TOKEN_SETUP: 586 case USB_TOKEN_OUT: 587 iov_to_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes); 588 break; 589 case USB_TOKEN_IN: 590 iov_from_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes); 591 break; 592 default: 593 fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid); 594 abort(); 595 } 596 p->actual_length += bytes; 597 } 598 599 void usb_packet_skip(USBPacket *p, size_t bytes) 600 { 601 QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov; 602 603 assert(p->actual_length >= 0); 604 assert(p->actual_length + bytes <= iov->size); 605 if (p->pid == USB_TOKEN_IN) { 606 iov_memset(iov->iov, iov->niov, p->actual_length, 0, bytes); 607 } 608 p->actual_length += bytes; 609 } 610 611 size_t usb_packet_size(USBPacket *p) 612 { 613 return p->combined ? p->combined->iov.size : p->iov.size; 614 } 615 616 void usb_packet_cleanup(USBPacket *p) 617 { 618 assert(!usb_packet_is_inflight(p)); 619 qemu_iovec_destroy(&p->iov); 620 } 621 622 void usb_ep_reset(USBDevice *dev) 623 { 624 int ep; 625 626 dev->ep_ctl.nr = 0; 627 dev->ep_ctl.type = USB_ENDPOINT_XFER_CONTROL; 628 dev->ep_ctl.ifnum = 0; 629 dev->ep_ctl.max_packet_size = 64; 630 dev->ep_ctl.max_streams = 0; 631 dev->ep_ctl.dev = dev; 632 dev->ep_ctl.pipeline = false; 633 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 634 dev->ep_in[ep].nr = ep + 1; 635 dev->ep_out[ep].nr = ep + 1; 636 dev->ep_in[ep].pid = USB_TOKEN_IN; 637 dev->ep_out[ep].pid = USB_TOKEN_OUT; 638 dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID; 639 dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID; 640 dev->ep_in[ep].ifnum = USB_INTERFACE_INVALID; 641 dev->ep_out[ep].ifnum = USB_INTERFACE_INVALID; 642 dev->ep_in[ep].max_packet_size = 0; 643 dev->ep_out[ep].max_packet_size = 0; 644 dev->ep_in[ep].max_streams = 0; 645 dev->ep_out[ep].max_streams = 0; 646 dev->ep_in[ep].dev = dev; 647 dev->ep_out[ep].dev = dev; 648 dev->ep_in[ep].pipeline = false; 649 dev->ep_out[ep].pipeline = false; 650 } 651 } 652 653 void usb_ep_init(USBDevice *dev) 654 { 655 int ep; 656 657 usb_ep_reset(dev); 658 QTAILQ_INIT(&dev->ep_ctl.queue); 659 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 660 QTAILQ_INIT(&dev->ep_in[ep].queue); 661 QTAILQ_INIT(&dev->ep_out[ep].queue); 662 } 663 } 664 665 void usb_ep_dump(USBDevice *dev) 666 { 667 static const char *tname[] = { 668 [USB_ENDPOINT_XFER_CONTROL] = "control", 669 [USB_ENDPOINT_XFER_ISOC] = "isoc", 670 [USB_ENDPOINT_XFER_BULK] = "bulk", 671 [USB_ENDPOINT_XFER_INT] = "int", 672 }; 673 int ifnum, ep, first; 674 675 fprintf(stderr, "Device \"%s\", config %d\n", 676 dev->product_desc, dev->configuration); 677 for (ifnum = 0; ifnum < 16; ifnum++) { 678 first = 1; 679 for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) { 680 if (dev->ep_in[ep].type != USB_ENDPOINT_XFER_INVALID && 681 dev->ep_in[ep].ifnum == ifnum) { 682 if (first) { 683 first = 0; 684 fprintf(stderr, " Interface %d, alternative %d\n", 685 ifnum, dev->altsetting[ifnum]); 686 } 687 fprintf(stderr, " Endpoint %d, IN, %s, %d max\n", ep, 688 tname[dev->ep_in[ep].type], 689 dev->ep_in[ep].max_packet_size); 690 } 691 if (dev->ep_out[ep].type != USB_ENDPOINT_XFER_INVALID && 692 dev->ep_out[ep].ifnum == ifnum) { 693 if (first) { 694 first = 0; 695 fprintf(stderr, " Interface %d, alternative %d\n", 696 ifnum, dev->altsetting[ifnum]); 697 } 698 fprintf(stderr, " Endpoint %d, OUT, %s, %d max\n", ep, 699 tname[dev->ep_out[ep].type], 700 dev->ep_out[ep].max_packet_size); 701 } 702 } 703 } 704 fprintf(stderr, "--\n"); 705 } 706 707 struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep) 708 { 709 struct USBEndpoint *eps; 710 711 if (dev == NULL) { 712 return NULL; 713 } 714 eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out; 715 if (ep == 0) { 716 return &dev->ep_ctl; 717 } 718 assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); 719 assert(ep > 0 && ep <= USB_MAX_ENDPOINTS); 720 return eps + ep - 1; 721 } 722 723 uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep) 724 { 725 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 726 return uep->type; 727 } 728 729 void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type) 730 { 731 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 732 uep->type = type; 733 } 734 735 void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum) 736 { 737 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 738 uep->ifnum = ifnum; 739 } 740 741 void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep, 742 uint16_t raw) 743 { 744 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 745 int size, microframes; 746 747 size = raw & 0x7ff; 748 switch ((raw >> 11) & 3) { 749 case 1: 750 microframes = 2; 751 break; 752 case 2: 753 microframes = 3; 754 break; 755 default: 756 microframes = 1; 757 break; 758 } 759 uep->max_packet_size = size * microframes; 760 } 761 762 void usb_ep_set_max_streams(USBDevice *dev, int pid, int ep, uint8_t raw) 763 { 764 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 765 int MaxStreams; 766 767 MaxStreams = raw & 0x1f; 768 if (MaxStreams) { 769 uep->max_streams = 1 << MaxStreams; 770 } else { 771 uep->max_streams = 0; 772 } 773 } 774 775 void usb_ep_set_halted(USBDevice *dev, int pid, int ep, bool halted) 776 { 777 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 778 uep->halted = halted; 779 } 780 781 USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep, 782 uint64_t id) 783 { 784 struct USBEndpoint *uep = usb_ep_get(dev, pid, ep); 785 USBPacket *p; 786 787 QTAILQ_FOREACH(p, &uep->queue, queue) { 788 if (p->id == id) { 789 return p; 790 } 791 } 792 793 return NULL; 794 } 795