usbdi.c revision 1.32
1 /* $NetBSD: usbdi.c,v 1.32 1999/08/23 22:55:14 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (augustss (at) carlstedt.se) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #if defined(__NetBSD__) || defined(__OpenBSD__) 44 #include <sys/device.h> 45 #else 46 #include <sys/module.h> 47 #include <sys/bus.h> 48 #include <sys/conf.h> 49 #endif 50 #include <sys/malloc.h> 51 #include <sys/proc.h> 52 53 #include <dev/usb/usb.h> 54 55 #include <dev/usb/usbdi.h> 56 #include <dev/usb/usbdi_util.h> 57 #include <dev/usb/usbdivar.h> 58 59 #if defined(__FreeBSD__) 60 #include "usb_if.h" 61 #endif 62 63 #ifdef USB_DEBUG 64 #define DPRINTF(x) if (usbdebug) logprintf x 65 #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x 66 extern int usbdebug; 67 #else 68 #define DPRINTF(x) 69 #define DPRINTFN(n,x) 70 #endif 71 72 static usbd_status usbd_ar_pipe __P((usbd_pipe_handle pipe)); 73 void usbd_do_request_async_cb 74 __P((usbd_request_handle, usbd_private_handle, usbd_status)); 75 void usbd_start_next __P((usbd_pipe_handle pipe)); 76 77 static SIMPLEQ_HEAD(, usbd_request) usbd_free_requests; 78 79 #if defined(__FreeBSD__) 80 #define USB_CDEV_MAJOR 108 81 82 extern struct cdevsw usb_cdevsw; 83 #endif 84 85 #ifdef USB_DEBUG 86 void usbd_dump_queue __P((usbd_pipe_handle)); 87 88 void 89 usbd_dump_queue(pipe) 90 usbd_pipe_handle pipe; 91 { 92 usbd_request_handle reqh; 93 94 printf("usbd_dump_queue: pipe=%p\n", pipe); 95 for (reqh = SIMPLEQ_FIRST(&pipe->queue); 96 reqh; 97 reqh = SIMPLEQ_NEXT(reqh, next)) { 98 printf(" reqh=%p\n", reqh); 99 } 100 } 101 #endif 102 103 usbd_status 104 usbd_open_pipe(iface, address, flags, pipe) 105 usbd_interface_handle iface; 106 u_int8_t address; 107 u_int8_t flags; 108 usbd_pipe_handle *pipe; 109 { 110 usbd_pipe_handle p; 111 struct usbd_endpoint *ep; 112 usbd_status r; 113 int i; 114 115 for (i = 0; i < iface->idesc->bNumEndpoints; i++) { 116 ep = &iface->endpoints[i]; 117 if (ep->edesc->bEndpointAddress == address) 118 goto found; 119 } 120 return (USBD_BAD_ADDRESS); 121 found: 122 if ((flags & USBD_EXCLUSIVE_USE) && 123 ep->refcnt != 0) 124 return (USBD_IN_USE); 125 r = usbd_setup_pipe(iface->device, iface, ep, &p); 126 if (r != USBD_NORMAL_COMPLETION) 127 return (r); 128 LIST_INSERT_HEAD(&iface->pipes, p, next); 129 *pipe = p; 130 return (USBD_NORMAL_COMPLETION); 131 } 132 133 usbd_status 134 usbd_open_pipe_intr(iface, address, flags, pipe, priv, buffer, length, cb) 135 usbd_interface_handle iface; 136 u_int8_t address; 137 u_int8_t flags; 138 usbd_pipe_handle *pipe; 139 usbd_private_handle priv; 140 void *buffer; 141 u_int32_t length; 142 usbd_callback cb; 143 { 144 usbd_status r; 145 usbd_request_handle reqh; 146 usbd_pipe_handle ipipe; 147 148 reqh = usbd_alloc_request(); 149 if (reqh == 0) 150 return (USBD_NOMEM); 151 r = usbd_open_pipe(iface, address, USBD_EXCLUSIVE_USE, &ipipe); 152 if (r != USBD_NORMAL_COMPLETION) 153 goto bad1; 154 r = usbd_setup_request(reqh, ipipe, priv, buffer, length, 155 USBD_XFER_IN | flags, USBD_NO_TIMEOUT, cb); 156 if (r != USBD_NORMAL_COMPLETION) 157 goto bad2; 158 ipipe->intrreqh = reqh; 159 ipipe->repeat = 1; 160 r = usbd_transfer(reqh); 161 *pipe = ipipe; 162 if (r != USBD_IN_PROGRESS) 163 goto bad3; 164 return (USBD_NORMAL_COMPLETION); 165 166 bad3: 167 ipipe->intrreqh = 0; 168 ipipe->repeat = 0; 169 bad2: 170 usbd_close_pipe(ipipe); 171 bad1: 172 usbd_free_request(reqh); 173 return r; 174 } 175 176 usbd_status 177 usbd_open_pipe_iso(iface, address, flags, pipe, priv, bufsize, nbuf) 178 usbd_interface_handle iface; 179 u_int8_t address; 180 u_int8_t flags; 181 usbd_pipe_handle *pipe; 182 usbd_private_handle priv; 183 u_int32_t bufsize; 184 u_int32_t nbuf; 185 { 186 usbd_status r; 187 usbd_pipe_handle p; 188 189 r = usbd_open_pipe(iface, address, USBD_EXCLUSIVE_USE, &p); 190 if (r != USBD_NORMAL_COMPLETION) 191 return (r); 192 if (!p->methods->isobuf) { 193 usbd_close_pipe(p); 194 return (USBD_INVAL); 195 } 196 r = p->methods->isobuf(p, bufsize, nbuf); 197 if (r != USBD_NORMAL_COMPLETION) { 198 usbd_close_pipe(p); 199 return (r); 200 } 201 *pipe = p; 202 return r; 203 } 204 205 usbd_status 206 usbd_close_pipe(pipe) 207 usbd_pipe_handle pipe; 208 { 209 #ifdef DIAGNOSTIC 210 if (pipe == 0) { 211 printf("usbd_close_pipe: pipe==NULL\n"); 212 return (USBD_NORMAL_COMPLETION); 213 } 214 #endif 215 216 if (--pipe->refcnt != 0) 217 return (USBD_NORMAL_COMPLETION); 218 if (SIMPLEQ_FIRST(&pipe->queue) != 0) 219 return (USBD_PENDING_REQUESTS); 220 LIST_REMOVE(pipe, next); 221 pipe->endpoint->refcnt--; 222 pipe->methods->close(pipe); 223 if (pipe->intrreqh) 224 usbd_free_request(pipe->intrreqh); 225 free(pipe, M_USB); 226 return (USBD_NORMAL_COMPLETION); 227 } 228 229 usbd_status 230 usbd_transfer(reqh) 231 usbd_request_handle reqh; 232 { 233 usbd_pipe_handle pipe = reqh->pipe; 234 usbd_status r; 235 int s; 236 237 DPRINTFN(5,("usbd_transfer: reqh=%p, flags=%d, pipe=%p, running=%d\n", 238 reqh, reqh->flags, pipe, pipe->running)); 239 #ifdef USB_DEBUG 240 if (usbdebug > 5) 241 usbd_dump_queue(pipe); 242 #endif 243 reqh->done = 0; 244 245 r = pipe->methods->transfer(reqh); 246 if (!(reqh->flags & USBD_SYNCHRONOUS)) 247 return r; 248 249 /* Sync transfer, wait for completion. */ 250 if (r != USBD_IN_PROGRESS) 251 return (r); 252 s = splusb(); 253 if (!reqh->done) { 254 if (reqh->pipe->device->bus->use_polling) 255 panic("usbd_transfer: not done\n"); 256 tsleep(reqh, PRIBIO, "usbsyn", 0); 257 } 258 splx(s); 259 return (reqh->status); 260 } 261 262 /* Like usbd_transfer(), but waits for completion. */ 263 usbd_status 264 usbd_sync_transfer(reqh) 265 usbd_request_handle reqh; 266 { 267 reqh->flags |= USBD_SYNCHRONOUS; 268 return (usbd_transfer(reqh)); 269 } 270 271 usbd_request_handle 272 usbd_alloc_request() 273 { 274 usbd_request_handle reqh; 275 276 reqh = SIMPLEQ_FIRST(&usbd_free_requests); 277 if (reqh) 278 SIMPLEQ_REMOVE_HEAD(&usbd_free_requests, reqh, next); 279 else 280 reqh = malloc(sizeof(*reqh), M_USB, M_NOWAIT); 281 if (!reqh) 282 return (0); 283 memset(reqh, 0, sizeof *reqh); 284 DPRINTFN(1,("usbd_alloc_request() = %p\n", reqh)); 285 return (reqh); 286 } 287 288 usbd_status 289 usbd_free_request(reqh) 290 usbd_request_handle reqh; 291 { 292 DPRINTFN(1,("usbd_free_request: %p\n", reqh)); 293 SIMPLEQ_INSERT_HEAD(&usbd_free_requests, reqh, next); 294 return (USBD_NORMAL_COMPLETION); 295 } 296 297 usbd_status 298 usbd_setup_request(reqh, pipe, priv, buffer, length, flags, timeout, callback) 299 usbd_request_handle reqh; 300 usbd_pipe_handle pipe; 301 usbd_private_handle priv; 302 void *buffer; 303 u_int32_t length; 304 u_int16_t flags; 305 u_int32_t timeout; 306 void (*callback) __P((usbd_request_handle, 307 usbd_private_handle, 308 usbd_status)); 309 { 310 reqh->pipe = pipe; 311 reqh->priv = priv; 312 reqh->buffer = buffer; 313 reqh->length = length; 314 reqh->actlen = 0; 315 reqh->flags = flags; 316 reqh->timeout = timeout; 317 reqh->status = USBD_NOT_STARTED; 318 reqh->callback = callback; 319 reqh->isreq = 0; 320 return (USBD_NORMAL_COMPLETION); 321 } 322 323 usbd_status 324 usbd_setup_default_request(reqh, dev, priv, timeout, req, buffer, 325 length, flags, callback) 326 usbd_request_handle reqh; 327 usbd_device_handle dev; 328 usbd_private_handle priv; 329 u_int32_t timeout; 330 usb_device_request_t *req; 331 void *buffer; 332 u_int32_t length; 333 u_int16_t flags; 334 void (*callback) __P((usbd_request_handle, 335 usbd_private_handle, 336 usbd_status)); 337 { 338 reqh->pipe = dev->default_pipe; 339 reqh->priv = priv; 340 reqh->buffer = buffer; 341 reqh->length = length; 342 reqh->actlen = 0; 343 reqh->flags = flags; 344 reqh->timeout = timeout; 345 reqh->status = USBD_NOT_STARTED; 346 reqh->callback = callback; 347 reqh->request = *req; 348 reqh->isreq = 1; 349 return (USBD_NORMAL_COMPLETION); 350 } 351 352 void 353 usbd_get_request_status(reqh, priv, buffer, count, status) 354 usbd_request_handle reqh; 355 usbd_private_handle *priv; 356 void **buffer; 357 u_int32_t *count; 358 usbd_status *status; 359 { 360 if (priv) 361 *priv = reqh->priv; 362 if (buffer) 363 *buffer = reqh->buffer; 364 if (count) 365 *count = reqh->actlen; 366 if (status) 367 *status = reqh->status; 368 } 369 370 usb_config_descriptor_t * 371 usbd_get_config_descriptor(dev) 372 usbd_device_handle dev; 373 { 374 return (dev->cdesc); 375 } 376 377 usb_interface_descriptor_t * 378 usbd_get_interface_descriptor(iface) 379 usbd_interface_handle iface; 380 { 381 return (iface->idesc); 382 } 383 384 usb_device_descriptor_t * 385 usbd_get_device_descriptor(dev) 386 usbd_device_handle dev; 387 { 388 return (&dev->ddesc); 389 } 390 391 usb_endpoint_descriptor_t * 392 usbd_interface2endpoint_descriptor(iface, index) 393 usbd_interface_handle iface; 394 u_int8_t index; 395 { 396 if (index >= iface->idesc->bNumEndpoints) 397 return (0); 398 return (iface->endpoints[index].edesc); 399 } 400 401 usbd_status 402 usbd_abort_pipe(pipe) 403 usbd_pipe_handle pipe; 404 { 405 usbd_status r; 406 int s; 407 408 #ifdef DIAGNOSTIC 409 if (pipe == 0) { 410 printf("usbd_close_pipe: pipe==NULL\n"); 411 return (USBD_NORMAL_COMPLETION); 412 } 413 #endif 414 s = splusb(); 415 r = usbd_ar_pipe(pipe); 416 splx(s); 417 return (r); 418 } 419 420 usbd_status 421 usbd_clear_endpoint_stall(pipe) 422 usbd_pipe_handle pipe; 423 { 424 usbd_device_handle dev = pipe->device; 425 usb_device_request_t req; 426 usbd_status r; 427 428 DPRINTFN(8, ("usbd_clear_endpoint_stall\n")); 429 pipe->methods->cleartoggle(pipe); 430 req.bmRequestType = UT_WRITE_ENDPOINT; 431 req.bRequest = UR_CLEAR_FEATURE; 432 USETW(req.wValue, UF_ENDPOINT_HALT); 433 USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress); 434 USETW(req.wLength, 0); 435 r = usbd_do_request(dev, &req, 0); 436 #if 0 437 XXX should we do this? 438 if (r == USBD_NORMAL_COMPLETION) { 439 pipe->state = USBD_PIPE_ACTIVE; 440 /* XXX activate pipe */ 441 } 442 #endif 443 return (r); 444 } 445 446 usbd_status 447 usbd_clear_endpoint_stall_async(pipe) 448 usbd_pipe_handle pipe; 449 { 450 usbd_device_handle dev = pipe->device; 451 usb_device_request_t req; 452 usbd_status r; 453 454 pipe->methods->cleartoggle(pipe); 455 req.bmRequestType = UT_WRITE_ENDPOINT; 456 req.bRequest = UR_CLEAR_FEATURE; 457 USETW(req.wValue, UF_ENDPOINT_HALT); 458 USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress); 459 USETW(req.wLength, 0); 460 r = usbd_do_request_async(dev, &req, 0); 461 return (r); 462 } 463 464 usbd_status 465 usbd_endpoint_count(iface, count) 466 usbd_interface_handle iface; 467 u_int8_t *count; 468 { 469 *count = iface->idesc->bNumEndpoints; 470 return (USBD_NORMAL_COMPLETION); 471 } 472 473 usbd_status 474 usbd_interface_count(dev, count) 475 usbd_device_handle dev; 476 u_int8_t *count; 477 { 478 if (!dev->cdesc) 479 return (USBD_NOT_CONFIGURED); 480 *count = dev->cdesc->bNumInterface; 481 return (USBD_NORMAL_COMPLETION); 482 } 483 484 usbd_status 485 usbd_interface2device_handle(iface, dev) 486 usbd_interface_handle iface; 487 usbd_device_handle *dev; 488 { 489 *dev = iface->device; 490 return (USBD_NORMAL_COMPLETION); 491 } 492 493 usbd_status 494 usbd_device2interface_handle(dev, ifaceno, iface) 495 usbd_device_handle dev; 496 u_int8_t ifaceno; 497 usbd_interface_handle *iface; 498 { 499 if (!dev->cdesc) 500 return (USBD_NOT_CONFIGURED); 501 if (ifaceno >= dev->cdesc->bNumInterface) 502 return (USBD_INVAL); 503 *iface = &dev->ifaces[ifaceno]; 504 return (USBD_NORMAL_COMPLETION); 505 } 506 507 /* XXXX use altno */ 508 usbd_status 509 usbd_set_interface(iface, altidx) 510 usbd_interface_handle iface; 511 int altidx; 512 { 513 usb_device_request_t req; 514 usbd_status r; 515 516 if (LIST_FIRST(&iface->pipes) != 0) 517 return (USBD_IN_USE); 518 519 if (iface->endpoints) 520 free(iface->endpoints, M_USB); 521 iface->endpoints = 0; 522 iface->idesc = 0; 523 524 r = usbd_fill_iface_data(iface->device, iface->index, altidx); 525 if (r != USBD_NORMAL_COMPLETION) 526 return (r); 527 528 req.bmRequestType = UT_WRITE_INTERFACE; 529 req.bRequest = UR_SET_INTERFACE; 530 USETW(req.wValue, iface->idesc->bAlternateSetting); 531 USETW(req.wIndex, iface->idesc->bInterfaceNumber); 532 USETW(req.wLength, 0); 533 return usbd_do_request(iface->device, &req, 0); 534 } 535 536 int 537 usbd_get_no_alts(cdesc, ifaceno) 538 usb_config_descriptor_t *cdesc; 539 int ifaceno; 540 { 541 char *p = (char *)cdesc; 542 char *end = p + UGETW(cdesc->wTotalLength); 543 usb_interface_descriptor_t *d; 544 int n; 545 546 for (n = 0; p < end; p += d->bLength) { 547 d = (usb_interface_descriptor_t *)p; 548 if (p + d->bLength <= end && 549 d->bDescriptorType == UDESC_INTERFACE && 550 d->bInterfaceNumber == ifaceno) 551 n++; 552 } 553 return (n); 554 } 555 556 int 557 usbd_get_interface_altindex(iface) 558 usbd_interface_handle iface; 559 { 560 return (iface->altindex); 561 } 562 563 usbd_status 564 usbd_get_interface(iface, aiface) 565 usbd_interface_handle iface; 566 u_int8_t *aiface; 567 { 568 usb_device_request_t req; 569 570 req.bmRequestType = UT_READ_INTERFACE; 571 req.bRequest = UR_GET_INTERFACE; 572 USETW(req.wValue, 0); 573 USETW(req.wIndex, iface->idesc->bInterfaceNumber); 574 USETW(req.wLength, 1); 575 return usbd_do_request(iface->device, &req, aiface); 576 } 577 578 /*** Internal routines ***/ 579 580 /* Dequeue all pipe operations, called at splusb(). */ 581 static usbd_status 582 usbd_ar_pipe(pipe) 583 usbd_pipe_handle pipe; 584 { 585 usbd_request_handle reqh; 586 587 DPRINTFN(2,("usbd_ar_pipe: pipe=%p\n", pipe)); 588 #ifdef USB_DEBUG 589 if (usbdebug > 5) 590 usbd_dump_queue(pipe); 591 #endif 592 while ((reqh = SIMPLEQ_FIRST(&pipe->queue))) { 593 DPRINTFN(2,("usbd_ar_pipe: pipe=%p reqh=%p (methods=%p)\n", 594 pipe, reqh, pipe->methods)); 595 /* Make the HC abort it (and invoke the callback). */ 596 pipe->methods->abort(reqh); 597 } 598 return (USBD_NORMAL_COMPLETION); 599 } 600 601 static int usbd_global_init_done = 0; 602 603 void 604 usbd_init() 605 { 606 #if defined(__FreeBSD__) 607 dev_t dev; 608 #endif 609 610 if (!usbd_global_init_done) { 611 usbd_global_init_done = 1; 612 SIMPLEQ_INIT(&usbd_free_requests); 613 614 #if defined(__FreeBSD__) 615 dev = makedev(USB_CDEV_MAJOR, 0); 616 cdevsw_add(&dev, &usb_cdevsw, NULL); 617 #endif 618 } 619 } 620 621 void 622 usb_transfer_complete(reqh) 623 usbd_request_handle reqh; 624 { 625 usbd_pipe_handle pipe = reqh->pipe; 626 int polling; 627 628 DPRINTFN(5, ("usb_transfer_complete: pipe=%p reqh=%p actlen=%d\n", 629 pipe, reqh, reqh->actlen)); 630 631 #ifdef DIAGNOSTIC 632 if (!pipe) { 633 printf("usbd_transfer_cb: pipe==0, reqh=%p\n", reqh); 634 return; 635 } 636 #endif 637 polling = reqh->pipe->device->bus->use_polling; 638 /* XXXX */ 639 if (polling) 640 pipe->running = 0; 641 642 if (reqh->pipe->methods->done) 643 reqh->pipe->methods->done(reqh); 644 645 /* Remove request from queue. */ 646 SIMPLEQ_REMOVE_HEAD(&pipe->queue, reqh, next); 647 648 /* Count completed transfers. */ 649 ++pipe->device->bus->stats.requests 650 [pipe->endpoint->edesc->bmAttributes & UE_XFERTYPE]; 651 652 reqh->done = 1; 653 if (reqh->status == USBD_NORMAL_COMPLETION && 654 reqh->actlen < reqh->length && 655 !(reqh->flags & USBD_SHORT_XFER_OK)) { 656 DPRINTFN(-1, ("usbd_transfer_cb: short xfer %d<%d (bytes)\n", 657 reqh->actlen, reqh->length)); 658 reqh->status = USBD_SHORT_XFER; 659 } 660 661 if (reqh->callback) 662 reqh->callback(reqh, reqh->priv, reqh->status); 663 664 if ((reqh->flags & USBD_SYNCHRONOUS) && !polling) 665 wakeup(reqh); 666 667 if (!pipe->repeat && 668 reqh->status != USBD_CANCELLED && reqh->status != USBD_TIMEOUT) 669 usbd_start_next(pipe); 670 } 671 672 usbd_status 673 usb_insert_transfer(reqh) 674 usbd_request_handle reqh; 675 { 676 usbd_pipe_handle pipe = reqh->pipe; 677 678 DPRINTFN(5,("usb_insert_transfer: pipe=%p running=%d\n", pipe, 679 pipe->running)); 680 SIMPLEQ_INSERT_TAIL(&pipe->queue, reqh, next); 681 if (pipe->running) 682 return (USBD_IN_PROGRESS); 683 pipe->running = 1; 684 return (USBD_NORMAL_COMPLETION); 685 } 686 687 void 688 usbd_start_next(pipe) 689 usbd_pipe_handle pipe; 690 { 691 usbd_request_handle reqh; 692 usbd_status r; 693 694 DPRINTFN(10, ("usbd_start_next: pipe=%p\n", pipe)); 695 696 #ifdef DIAGNOSTIC 697 if (!pipe) { 698 printf("usbd_start_next: pipe == 0\n"); 699 return; 700 } 701 if (!pipe->methods || !pipe->methods->start) { 702 printf("usbd_start_next: no start method\n"); 703 return; 704 } 705 #endif 706 707 /* Get next request in queue. */ 708 reqh = SIMPLEQ_FIRST(&pipe->queue); 709 DPRINTFN(5, ("usbd_start_next: pipe=%p start reqh=%p\n", pipe, reqh)); 710 if (!reqh) 711 pipe->running = 0; 712 else { 713 r = pipe->methods->start(reqh); 714 if (r != USBD_IN_PROGRESS) { 715 printf("usbd_start_next: error=%d\n", r); 716 pipe->running = 0; 717 /* XXX do what? */ 718 } 719 } 720 } 721 722 usbd_status 723 usbd_do_request(dev, req, data) 724 usbd_device_handle dev; 725 usb_device_request_t *req; 726 void *data; 727 { 728 return (usbd_do_request_flags(dev, req, data, 0, 0)); 729 } 730 731 usbd_status 732 usbd_do_request_flags(dev, req, data, flags, actlen) 733 usbd_device_handle dev; 734 usb_device_request_t *req; 735 void *data; 736 u_int16_t flags; 737 int *actlen; 738 { 739 usbd_request_handle reqh; 740 usbd_status r; 741 742 #ifdef DIAGNOSTIC 743 if (!curproc) { 744 printf("usbd_do_request: not in process context\n"); 745 return (USBD_XXX); 746 } 747 #endif 748 749 reqh = usbd_alloc_request(); 750 if (reqh == 0) 751 return (USBD_NOMEM); 752 r = usbd_setup_default_request( 753 reqh, dev, 0, USBD_DEFAULT_TIMEOUT, req, data, 754 UGETW(req->wLength), flags, 0); 755 if (r != USBD_NORMAL_COMPLETION) 756 goto bad; 757 r = usbd_sync_transfer(reqh); 758 #if defined(USB_DEBUG) || defined(DIAGNOSTIC) 759 if (reqh->actlen > reqh->length) 760 printf("usbd_do_request: overrun addr=%d type=0x%02x req=0x" 761 "%02x val=%d index=%d rlen=%d length=%d actlen=%d\n", 762 dev->address, reqh->request.bmRequestType, 763 reqh->request.bRequest, UGETW(reqh->request.wValue), 764 UGETW(reqh->request.wIndex), 765 UGETW(reqh->request.wLength), 766 reqh->length, reqh->actlen); 767 #endif 768 if (actlen) 769 *actlen = reqh->actlen; 770 if (r == USBD_STALLED) { 771 /* 772 * The control endpoint has stalled. Control endpoints 773 * should not halt, but some may do so anyway so clear 774 * any halt condition. 775 */ 776 usb_device_request_t treq; 777 usb_status_t status; 778 u_int16_t s; 779 usbd_status nr; 780 781 treq.bmRequestType = UT_READ_ENDPOINT; 782 treq.bRequest = UR_GET_STATUS; 783 USETW(treq.wValue, 0); 784 USETW(treq.wIndex, 0); 785 USETW(treq.wLength, sizeof(usb_status_t)); 786 nr = usbd_setup_default_request( 787 reqh, dev, 0, USBD_DEFAULT_TIMEOUT, &treq, &status, 788 sizeof(usb_status_t), 0, 0); 789 if (nr != USBD_NORMAL_COMPLETION) 790 goto bad; 791 nr = usbd_sync_transfer(reqh); 792 if (nr != USBD_NORMAL_COMPLETION) 793 goto bad; 794 s = UGETW(status.wStatus); 795 DPRINTF(("usbd_do_request: status = 0x%04x\n", s)); 796 if (!(s & UES_HALT)) 797 goto bad; 798 treq.bmRequestType = UT_WRITE_ENDPOINT; 799 treq.bRequest = UR_CLEAR_FEATURE; 800 USETW(treq.wValue, UF_ENDPOINT_HALT); 801 USETW(treq.wIndex, 0); 802 USETW(treq.wLength, 0); 803 nr = usbd_setup_default_request( 804 reqh, dev, 0, USBD_DEFAULT_TIMEOUT, &treq, &status, 805 0, 0, 0); 806 if (nr != USBD_NORMAL_COMPLETION) 807 goto bad; 808 nr = usbd_sync_transfer(reqh); 809 if (nr != USBD_NORMAL_COMPLETION) 810 goto bad; 811 } 812 813 bad: 814 usbd_free_request(reqh); 815 return (r); 816 } 817 818 void 819 usbd_do_request_async_cb(reqh, priv, status) 820 usbd_request_handle reqh; 821 usbd_private_handle priv; 822 usbd_status status; 823 { 824 #if defined(USB_DEBUG) || defined(DIAGNOSTIC) 825 if (reqh->actlen > reqh->length) 826 printf("usbd_do_request: overrun addr=%d type=0x%02x req=0x" 827 "%02x val=%d index=%d rlen=%d length=%d actlen=%d\n", 828 reqh->pipe->device->address, 829 reqh->request.bmRequestType, 830 reqh->request.bRequest, UGETW(reqh->request.wValue), 831 UGETW(reqh->request.wIndex), 832 UGETW(reqh->request.wLength), 833 reqh->length, reqh->actlen); 834 #endif 835 usbd_free_request(reqh); 836 } 837 838 /* 839 * Execute a request without waiting for completion. 840 * Can be used from interrupt context. 841 */ 842 usbd_status 843 usbd_do_request_async(dev, req, data) 844 usbd_device_handle dev; 845 usb_device_request_t *req; 846 void *data; 847 { 848 usbd_request_handle reqh; 849 usbd_status r; 850 851 reqh = usbd_alloc_request(); 852 if (reqh == 0) 853 return (USBD_NOMEM); 854 r = usbd_setup_default_request( 855 reqh, dev, 0, USBD_DEFAULT_TIMEOUT, req, data, 856 UGETW(req->wLength), 0, usbd_do_request_async_cb); 857 if (r != USBD_NORMAL_COMPLETION) { 858 usbd_free_request(reqh); 859 return (r); 860 } 861 r = usbd_transfer(reqh); 862 if (r != USBD_IN_PROGRESS) 863 return (r); 864 return (USBD_NORMAL_COMPLETION); 865 } 866 867 struct usbd_quirks * 868 usbd_get_quirks(dev) 869 usbd_device_handle dev; 870 { 871 return (dev->quirks); 872 } 873 874 /* XXX do periodic free() of free list */ 875 876 /* 877 * Called from keyboard driver when in polling mode. 878 */ 879 void 880 usbd_dopoll(iface) 881 usbd_interface_handle iface; 882 { 883 iface->device->bus->do_poll(iface->device->bus); 884 } 885 886 void 887 usbd_set_polling(iface, on) 888 usbd_interface_handle iface; 889 int on; 890 { 891 iface->device->bus->use_polling = on; 892 } 893 894 895 usb_endpoint_descriptor_t * 896 usbd_get_endpoint_descriptor(iface, address) 897 usbd_interface_handle iface; 898 u_int8_t address; 899 { 900 struct usbd_endpoint *ep; 901 int i; 902 903 for (i = 0; i < iface->idesc->bNumEndpoints; i++) { 904 ep = &iface->endpoints[i]; 905 if (ep->edesc->bEndpointAddress == address) 906 return (iface->endpoints[i].edesc); 907 } 908 return (0); 909 } 910 911 #if defined(__FreeBSD__) 912 void 913 usbd_print_child(device_t parent, device_t child) 914 { 915 /* 916 struct usb_softc *sc = device_get_softc(child); 917 */ 918 919 printf(" at %s%d", device_get_name(parent), device_get_unit(parent)); 920 921 /* XXX How do we get to the usbd_device_handle??? 922 usbd_device_handle dev = invalidadosch; 923 924 printf(" addr %d", dev->addr); 925 926 if (bootverbose) { 927 if (dev->lowspeed) 928 printf(", lowspeed"); 929 if (dev->self_powered) 930 printf(", self powered"); 931 else 932 printf(", %dmA", dev->power); 933 printf(", config %d", dev->config); 934 } 935 */ 936 } 937 938 /* Reconfigure all the USB busses in the system. */ 939 int 940 usbd_driver_load(module_t mod, int what, void *arg) 941 { 942 devclass_t usb_devclass = devclass_find("usb"); 943 devclass_t ugen_devclass = devclass_find("ugen"); 944 device_t *devlist; 945 int devcount; 946 int error; 947 948 switch (what) { 949 case MOD_LOAD: 950 case MOD_UNLOAD: 951 if (!usb_devclass) 952 return 0; /* just ignore call */ 953 954 if (ugen_devclass) { 955 /* detach devices from generic driver if possible */ 956 error = devclass_get_devices(ugen_devclass, &devlist, 957 &devcount); 958 if (!error) 959 for (devcount--; devcount >= 0; devcount--) 960 (void)DEVICE_DETACH(devlist[devcount]); 961 } 962 963 error = devclass_get_devices(usb_devclass, &devlist, &devcount); 964 if (error) 965 return 0; /* XXX maybe transient, or error? */ 966 967 for (devcount--; devcount >= 0; devcount--) 968 USB_RECONFIGURE(devlist[devcount]); 969 970 free(devlist, M_TEMP); 971 return 0; 972 } 973 974 return 0; /* nothing to do by us */ 975 } 976 977 /* Set the description of the device including a malloc and copy. */ 978 void 979 usbd_device_set_desc(device_t device, char *devinfo) 980 { 981 size_t l; 982 char *desc; 983 984 if ( devinfo ) { 985 l = strlen(devinfo); 986 desc = malloc(l+1, M_USB, M_NOWAIT); 987 if (desc) 988 memcpy(desc, devinfo, l+1); 989 } else 990 desc = NULL; 991 992 device_set_desc(device, desc); 993 } 994 995 char * 996 usbd_devname(bdevice *bdev) 997 { 998 static char buf[20]; 999 /* 1000 * A static buffer is a loss if this routine is used from an interrupt, 1001 * but it's not fatal. 1002 */ 1003 1004 sprintf(buf, "%s%d", device_get_name(*bdev), device_get_unit(*bdev)); 1005 return (buf); 1006 } 1007 1008 #endif 1009
Indexes created Tue Sep 30 20:09:53 GMT 2025