1 /* $FreeBSD$ */ 2 /*- 3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/stdint.h> 28 #include <sys/stddef.h> 29 #include <sys/param.h> 30 #include <sys/queue.h> 31 #include <sys/types.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/module.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 #include <sys/condvar.h> 39 #include <sys/sysctl.h> 40 #include <sys/sx.h> 41 #include <sys/unistd.h> 42 #include <sys/callout.h> 43 #include <sys/malloc.h> 44 #include <sys/priv.h> 45 #include <sys/conf.h> 46 #include <sys/fcntl.h> 47 48 #include <dev/usb/usb.h> 49 #include <dev/usb/usbdi.h> 50 #include <dev/usb/usbdi_util.h> 51 #include <dev/usb/usb_ioctl.h> 52 53 #if USB_HAVE_UGEN 54 #include <sys/sbuf.h> 55 #endif 56 57 #include "usbdevs.h" 58 59 #define USB_DEBUG_VAR usb_debug 60 61 #include <dev/usb/usb_core.h> 62 #include <dev/usb/usb_debug.h> 63 #include <dev/usb/usb_process.h> 64 #include <dev/usb/usb_device.h> 65 #include <dev/usb/usb_busdma.h> 66 #include <dev/usb/usb_transfer.h> 67 #include <dev/usb/usb_request.h> 68 #include <dev/usb/usb_dynamic.h> 69 #include <dev/usb/usb_hub.h> 70 #include <dev/usb/usb_util.h> 71 #include <dev/usb/usb_msctest.h> 72 #if USB_HAVE_UGEN 73 #include <dev/usb/usb_dev.h> 74 #include <dev/usb/usb_generic.h> 75 #endif 76 77 #include <dev/usb/quirk/usb_quirk.h> 78 79 #include <dev/usb/usb_controller.h> 80 #include <dev/usb/usb_bus.h> 81 82 /* function prototypes */ 83 84 static void usb_init_endpoint(struct usb_device *, uint8_t, 85 struct usb_endpoint_descriptor *, 86 struct usb_endpoint_ss_comp_descriptor *, 87 struct usb_endpoint *); 88 static void usb_unconfigure(struct usb_device *, uint8_t); 89 static void usb_detach_device_sub(struct usb_device *, device_t *, 90 char **, uint8_t); 91 static uint8_t usb_probe_and_attach_sub(struct usb_device *, 92 struct usb_attach_arg *); 93 static void usb_init_attach_arg(struct usb_device *, 94 struct usb_attach_arg *); 95 static void usb_suspend_resume_sub(struct usb_device *, device_t, 96 uint8_t); 97 static void usbd_clear_stall_proc(struct usb_proc_msg *_pm); 98 static usb_error_t usb_config_parse(struct usb_device *, uint8_t, uint8_t); 99 static void usbd_set_device_strings(struct usb_device *); 100 #if USB_HAVE_DEVCTL 101 static void usb_notify_addq(const char *type, struct usb_device *); 102 #endif 103 #if USB_HAVE_UGEN 104 static void usb_fifo_free_wrap(struct usb_device *, uint8_t, uint8_t); 105 static void usb_cdev_create(struct usb_device *); 106 static void usb_cdev_free(struct usb_device *); 107 #endif 108 109 /* This variable is global to allow easy access to it: */ 110 111 int usb_template = 0; 112 113 TUNABLE_INT("hw.usb.usb_template", &usb_template); 114 SYSCTL_INT(_hw_usb, OID_AUTO, template, CTLFLAG_RW, 115 &usb_template, 0, "Selected USB device side template"); 116 117 /* English is default language */ 118 119 static int usb_lang_id = 0x0009; 120 static int usb_lang_mask = 0x00FF; 121 122 TUNABLE_INT("hw.usb.usb_lang_id", &usb_lang_id); 123 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_id, CTLFLAG_RW, 124 &usb_lang_id, 0, "Preferred USB language ID"); 125 126 TUNABLE_INT("hw.usb.usb_lang_mask", &usb_lang_mask); 127 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_mask, CTLFLAG_RW, 128 &usb_lang_mask, 0, "Preferred USB language mask"); 129 130 static const char* statestr[USB_STATE_MAX] = { 131 [USB_STATE_DETACHED] = "DETACHED", 132 [USB_STATE_ATTACHED] = "ATTACHED", 133 [USB_STATE_POWERED] = "POWERED", 134 [USB_STATE_ADDRESSED] = "ADDRESSED", 135 [USB_STATE_CONFIGURED] = "CONFIGURED", 136 }; 137 138 const char * 139 usb_statestr(enum usb_dev_state state) 140 { 141 return ((state < USB_STATE_MAX) ? statestr[state] : "UNKNOWN"); 142 } 143 144 const char * 145 usb_get_manufacturer(struct usb_device *udev) 146 { 147 return (udev->manufacturer ? udev->manufacturer : "Unknown"); 148 } 149 150 const char * 151 usb_get_product(struct usb_device *udev) 152 { 153 return (udev->product ? udev->product : ""); 154 } 155 156 const char * 157 usb_get_serial(struct usb_device *udev) 158 { 159 return (udev->serial ? udev->serial : ""); 160 } 161 162 /*------------------------------------------------------------------------* 163 * usbd_get_ep_by_addr 164 * 165 * This function searches for an USB ep by endpoint address and 166 * direction. 167 * 168 * Returns: 169 * NULL: Failure 170 * Else: Success 171 *------------------------------------------------------------------------*/ 172 struct usb_endpoint * 173 usbd_get_ep_by_addr(struct usb_device *udev, uint8_t ea_val) 174 { 175 struct usb_endpoint *ep = udev->endpoints; 176 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max; 177 enum { 178 EA_MASK = (UE_DIR_IN | UE_DIR_OUT | UE_ADDR), 179 }; 180 181 /* 182 * According to the USB specification not all bits are used 183 * for the endpoint address. Keep defined bits only: 184 */ 185 ea_val &= EA_MASK; 186 187 /* 188 * Iterate accross all the USB endpoints searching for a match 189 * based on the endpoint address: 190 */ 191 for (; ep != ep_end; ep++) { 192 193 if (ep->edesc == NULL) { 194 continue; 195 } 196 /* do the mask and check the value */ 197 if ((ep->edesc->bEndpointAddress & EA_MASK) == ea_val) { 198 goto found; 199 } 200 } 201 202 /* 203 * The default endpoint is always present and is checked separately: 204 */ 205 if ((udev->ctrl_ep.edesc) && 206 ((udev->ctrl_ep.edesc->bEndpointAddress & EA_MASK) == ea_val)) { 207 ep = &udev->ctrl_ep; 208 goto found; 209 } 210 return (NULL); 211 212 found: 213 return (ep); 214 } 215 216 /*------------------------------------------------------------------------* 217 * usbd_get_endpoint 218 * 219 * This function searches for an USB endpoint based on the information 220 * given by the passed "struct usb_config" pointer. 221 * 222 * Return values: 223 * NULL: No match. 224 * Else: Pointer to "struct usb_endpoint". 225 *------------------------------------------------------------------------*/ 226 struct usb_endpoint * 227 usbd_get_endpoint(struct usb_device *udev, uint8_t iface_index, 228 const struct usb_config *setup) 229 { 230 struct usb_endpoint *ep = udev->endpoints; 231 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max; 232 uint8_t index = setup->ep_index; 233 uint8_t ea_mask; 234 uint8_t ea_val; 235 uint8_t type_mask; 236 uint8_t type_val; 237 238 DPRINTFN(10, "udev=%p iface_index=%d address=0x%x " 239 "type=0x%x dir=0x%x index=%d\n", 240 udev, iface_index, setup->endpoint, 241 setup->type, setup->direction, setup->ep_index); 242 243 /* check USB mode */ 244 245 if (setup->usb_mode != USB_MODE_DUAL && 246 udev->flags.usb_mode != setup->usb_mode) { 247 /* wrong mode - no endpoint */ 248 return (NULL); 249 } 250 251 /* setup expected endpoint direction mask and value */ 252 253 if (setup->direction == UE_DIR_RX) { 254 ea_mask = (UE_DIR_IN | UE_DIR_OUT); 255 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ? 256 UE_DIR_OUT : UE_DIR_IN; 257 } else if (setup->direction == UE_DIR_TX) { 258 ea_mask = (UE_DIR_IN | UE_DIR_OUT); 259 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ? 260 UE_DIR_IN : UE_DIR_OUT; 261 } else if (setup->direction == UE_DIR_ANY) { 262 /* match any endpoint direction */ 263 ea_mask = 0; 264 ea_val = 0; 265 } else { 266 /* match the given endpoint direction */ 267 ea_mask = (UE_DIR_IN | UE_DIR_OUT); 268 ea_val = (setup->direction & (UE_DIR_IN | UE_DIR_OUT)); 269 } 270 271 /* setup expected endpoint address */ 272 273 if (setup->endpoint == UE_ADDR_ANY) { 274 /* match any endpoint address */ 275 } else { 276 /* match the given endpoint address */ 277 ea_mask |= UE_ADDR; 278 ea_val |= (setup->endpoint & UE_ADDR); 279 } 280 281 /* setup expected endpoint type */ 282 283 if (setup->type == UE_BULK_INTR) { 284 /* this will match BULK and INTERRUPT endpoints */ 285 type_mask = 2; 286 type_val = 2; 287 } else if (setup->type == UE_TYPE_ANY) { 288 /* match any endpoint type */ 289 type_mask = 0; 290 type_val = 0; 291 } else { 292 /* match the given endpoint type */ 293 type_mask = UE_XFERTYPE; 294 type_val = (setup->type & UE_XFERTYPE); 295 } 296 297 /* 298 * Iterate accross all the USB endpoints searching for a match 299 * based on the endpoint address. Note that we are searching 300 * the endpoints from the beginning of the "udev->endpoints" array. 301 */ 302 for (; ep != ep_end; ep++) { 303 304 if ((ep->edesc == NULL) || 305 (ep->iface_index != iface_index)) { 306 continue; 307 } 308 /* do the masks and check the values */ 309 310 if (((ep->edesc->bEndpointAddress & ea_mask) == ea_val) && 311 ((ep->edesc->bmAttributes & type_mask) == type_val)) { 312 if (!index--) { 313 goto found; 314 } 315 } 316 } 317 318 /* 319 * Match against default endpoint last, so that "any endpoint", "any 320 * address" and "any direction" returns the first endpoint of the 321 * interface. "iface_index" and "direction" is ignored: 322 */ 323 if ((udev->ctrl_ep.edesc) && 324 ((udev->ctrl_ep.edesc->bEndpointAddress & ea_mask) == ea_val) && 325 ((udev->ctrl_ep.edesc->bmAttributes & type_mask) == type_val) && 326 (!index)) { 327 ep = &udev->ctrl_ep; 328 goto found; 329 } 330 return (NULL); 331 332 found: 333 return (ep); 334 } 335 336 /*------------------------------------------------------------------------* 337 * usbd_interface_count 338 * 339 * This function stores the number of USB interfaces excluding 340 * alternate settings, which the USB config descriptor reports into 341 * the unsigned 8-bit integer pointed to by "count". 342 * 343 * Returns: 344 * 0: Success 345 * Else: Failure 346 *------------------------------------------------------------------------*/ 347 usb_error_t 348 usbd_interface_count(struct usb_device *udev, uint8_t *count) 349 { 350 if (udev->cdesc == NULL) { 351 *count = 0; 352 return (USB_ERR_NOT_CONFIGURED); 353 } 354 *count = udev->ifaces_max; 355 return (USB_ERR_NORMAL_COMPLETION); 356 } 357 358 359 /*------------------------------------------------------------------------* 360 * usb_init_endpoint 361 * 362 * This function will initialise the USB endpoint structure pointed to by 363 * the "endpoint" argument. The structure pointed to by "endpoint" must be 364 * zeroed before calling this function. 365 *------------------------------------------------------------------------*/ 366 static void 367 usb_init_endpoint(struct usb_device *udev, uint8_t iface_index, 368 struct usb_endpoint_descriptor *edesc, 369 struct usb_endpoint_ss_comp_descriptor *ecomp, 370 struct usb_endpoint *ep) 371 { 372 struct usb_bus_methods *methods; 373 374 methods = udev->bus->methods; 375 376 (methods->endpoint_init) (udev, edesc, ep); 377 378 /* initialise USB endpoint structure */ 379 ep->edesc = edesc; 380 ep->ecomp = ecomp; 381 ep->iface_index = iface_index; 382 TAILQ_INIT(&ep->endpoint_q.head); 383 ep->endpoint_q.command = &usbd_pipe_start; 384 385 /* the pipe is not supported by the hardware */ 386 if (ep->methods == NULL) 387 return; 388 389 /* clear stall, if any */ 390 if (methods->clear_stall != NULL) { 391 USB_BUS_LOCK(udev->bus); 392 (methods->clear_stall) (udev, ep); 393 USB_BUS_UNLOCK(udev->bus); 394 } 395 } 396 397 /*-----------------------------------------------------------------------* 398 * usb_endpoint_foreach 399 * 400 * This function will iterate all the USB endpoints except the control 401 * endpoint. This function is NULL safe. 402 * 403 * Return values: 404 * NULL: End of USB endpoints 405 * Else: Pointer to next USB endpoint 406 *------------------------------------------------------------------------*/ 407 struct usb_endpoint * 408 usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep) 409 { 410 struct usb_endpoint *ep_end; 411 412 /* be NULL safe */ 413 if (udev == NULL) 414 return (NULL); 415 416 ep_end = udev->endpoints + udev->endpoints_max; 417 418 /* get next endpoint */ 419 if (ep == NULL) 420 ep = udev->endpoints; 421 else 422 ep++; 423 424 /* find next allocated ep */ 425 while (ep != ep_end) { 426 if (ep->edesc != NULL) 427 return (ep); 428 ep++; 429 } 430 return (NULL); 431 } 432 433 /*------------------------------------------------------------------------* 434 * usb_unconfigure 435 * 436 * This function will free all USB interfaces and USB endpoints belonging 437 * to an USB device. 438 * 439 * Flag values, see "USB_UNCFG_FLAG_XXX". 440 *------------------------------------------------------------------------*/ 441 static void 442 usb_unconfigure(struct usb_device *udev, uint8_t flag) 443 { 444 uint8_t do_unlock; 445 446 /* automatic locking */ 447 if (usbd_enum_is_locked(udev)) { 448 do_unlock = 0; 449 } else { 450 do_unlock = 1; 451 usbd_enum_lock(udev); 452 } 453 454 /* detach all interface drivers */ 455 usb_detach_device(udev, USB_IFACE_INDEX_ANY, flag); 456 457 #if USB_HAVE_UGEN 458 /* free all FIFOs except control endpoint FIFOs */ 459 usb_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, flag); 460 461 /* 462 * Free all cdev's, if any. 463 */ 464 usb_cdev_free(udev); 465 #endif 466 467 #if USB_HAVE_COMPAT_LINUX 468 /* free Linux compat device, if any */ 469 if (udev->linux_endpoint_start) { 470 usb_linux_free_device(udev); 471 udev->linux_endpoint_start = NULL; 472 } 473 #endif 474 475 usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_FREE); 476 477 /* free "cdesc" after "ifaces" and "endpoints", if any */ 478 if (udev->cdesc != NULL) { 479 if (udev->flags.usb_mode != USB_MODE_DEVICE) 480 free(udev->cdesc, M_USB); 481 udev->cdesc = NULL; 482 } 483 /* set unconfigured state */ 484 udev->curr_config_no = USB_UNCONFIG_NO; 485 udev->curr_config_index = USB_UNCONFIG_INDEX; 486 487 if (do_unlock) 488 usbd_enum_unlock(udev); 489 } 490 491 /*------------------------------------------------------------------------* 492 * usbd_set_config_index 493 * 494 * This function selects configuration by index, independent of the 495 * actual configuration number. This function should not be used by 496 * USB drivers. 497 * 498 * Returns: 499 * 0: Success 500 * Else: Failure 501 *------------------------------------------------------------------------*/ 502 usb_error_t 503 usbd_set_config_index(struct usb_device *udev, uint8_t index) 504 { 505 struct usb_status ds; 506 struct usb_config_descriptor *cdp; 507 uint16_t power; 508 uint16_t max_power; 509 uint8_t selfpowered; 510 uint8_t do_unlock; 511 usb_error_t err; 512 513 DPRINTFN(6, "udev=%p index=%d\n", udev, index); 514 515 /* automatic locking */ 516 if (usbd_enum_is_locked(udev)) { 517 do_unlock = 0; 518 } else { 519 do_unlock = 1; 520 usbd_enum_lock(udev); 521 } 522 523 usb_unconfigure(udev, 0); 524 525 if (index == USB_UNCONFIG_INDEX) { 526 /* 527 * Leave unallocated when unconfiguring the 528 * device. "usb_unconfigure()" will also reset 529 * the current config number and index. 530 */ 531 err = usbd_req_set_config(udev, NULL, USB_UNCONFIG_NO); 532 if (udev->state == USB_STATE_CONFIGURED) 533 usb_set_device_state(udev, USB_STATE_ADDRESSED); 534 goto done; 535 } 536 /* get the full config descriptor */ 537 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 538 /* save some memory */ 539 err = usbd_req_get_descriptor_ptr(udev, &cdp, 540 (UDESC_CONFIG << 8) | index); 541 } else { 542 /* normal request */ 543 err = usbd_req_get_config_desc_full(udev, 544 NULL, &cdp, M_USB, index); 545 } 546 if (err) { 547 goto done; 548 } 549 /* set the new config descriptor */ 550 551 udev->cdesc = cdp; 552 553 /* Figure out if the device is self or bus powered. */ 554 selfpowered = 0; 555 if ((!udev->flags.uq_bus_powered) && 556 (cdp->bmAttributes & UC_SELF_POWERED) && 557 (udev->flags.usb_mode == USB_MODE_HOST)) { 558 /* May be self powered. */ 559 if (cdp->bmAttributes & UC_BUS_POWERED) { 560 /* Must ask device. */ 561 err = usbd_req_get_device_status(udev, NULL, &ds); 562 if (err) { 563 DPRINTFN(0, "could not read " 564 "device status: %s\n", 565 usbd_errstr(err)); 566 } else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) { 567 selfpowered = 1; 568 } 569 DPRINTF("status=0x%04x \n", 570 UGETW(ds.wStatus)); 571 } else 572 selfpowered = 1; 573 } 574 DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, " 575 "selfpowered=%d, power=%d\n", 576 udev, cdp, 577 udev->address, cdp->bConfigurationValue, cdp->bmAttributes, 578 selfpowered, cdp->bMaxPower * 2); 579 580 /* Check if we have enough power. */ 581 power = cdp->bMaxPower * 2; 582 583 if (udev->parent_hub) { 584 max_power = udev->parent_hub->hub->portpower; 585 } else { 586 max_power = USB_MAX_POWER; 587 } 588 589 if (power > max_power) { 590 DPRINTFN(0, "power exceeded %d > %d\n", power, max_power); 591 err = USB_ERR_NO_POWER; 592 goto done; 593 } 594 /* Only update "self_powered" in USB Host Mode */ 595 if (udev->flags.usb_mode == USB_MODE_HOST) { 596 udev->flags.self_powered = selfpowered; 597 } 598 udev->power = power; 599 udev->curr_config_no = cdp->bConfigurationValue; 600 udev->curr_config_index = index; 601 usb_set_device_state(udev, USB_STATE_CONFIGURED); 602 603 /* Set the actual configuration value. */ 604 err = usbd_req_set_config(udev, NULL, cdp->bConfigurationValue); 605 if (err) { 606 goto done; 607 } 608 609 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_ALLOC); 610 if (err) { 611 goto done; 612 } 613 614 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_INIT); 615 if (err) { 616 goto done; 617 } 618 619 #if USB_HAVE_UGEN 620 /* create device nodes for each endpoint */ 621 usb_cdev_create(udev); 622 #endif 623 624 done: 625 DPRINTF("error=%s\n", usbd_errstr(err)); 626 if (err) { 627 usb_unconfigure(udev, 0); 628 } 629 if (do_unlock) 630 usbd_enum_unlock(udev); 631 return (err); 632 } 633 634 /*------------------------------------------------------------------------* 635 * usb_config_parse 636 * 637 * This function will allocate and free USB interfaces and USB endpoints, 638 * parse the USB configuration structure and initialise the USB endpoints 639 * and interfaces. If "iface_index" is not equal to 640 * "USB_IFACE_INDEX_ANY" then the "cmd" parameter is the 641 * alternate_setting to be selected for the given interface. Else the 642 * "cmd" parameter is defined by "USB_CFG_XXX". "iface_index" can be 643 * "USB_IFACE_INDEX_ANY" or a valid USB interface index. This function 644 * is typically called when setting the configuration or when setting 645 * an alternate interface. 646 * 647 * Returns: 648 * 0: Success 649 * Else: Failure 650 *------------------------------------------------------------------------*/ 651 static usb_error_t 652 usb_config_parse(struct usb_device *udev, uint8_t iface_index, uint8_t cmd) 653 { 654 struct usb_idesc_parse_state ips; 655 struct usb_interface_descriptor *id; 656 struct usb_endpoint_descriptor *ed; 657 struct usb_interface *iface; 658 struct usb_endpoint *ep; 659 usb_error_t err; 660 uint8_t ep_curr; 661 uint8_t ep_max; 662 uint8_t temp; 663 uint8_t do_init; 664 uint8_t alt_index; 665 666 if (iface_index != USB_IFACE_INDEX_ANY) { 667 /* parameter overload */ 668 alt_index = cmd; 669 cmd = USB_CFG_INIT; 670 } else { 671 /* not used */ 672 alt_index = 0; 673 } 674 675 err = 0; 676 677 DPRINTFN(5, "iface_index=%d cmd=%d\n", 678 iface_index, cmd); 679 680 if (cmd == USB_CFG_FREE) 681 goto cleanup; 682 683 if (cmd == USB_CFG_INIT) { 684 sx_assert(&udev->enum_sx, SA_LOCKED); 685 686 /* check for in-use endpoints */ 687 688 ep = udev->endpoints; 689 ep_max = udev->endpoints_max; 690 while (ep_max--) { 691 /* look for matching endpoints */ 692 if ((iface_index == USB_IFACE_INDEX_ANY) || 693 (iface_index == ep->iface_index)) { 694 if (ep->refcount_alloc != 0) { 695 /* 696 * This typically indicates a 697 * more serious error. 698 */ 699 err = USB_ERR_IN_USE; 700 } else { 701 /* reset endpoint */ 702 memset(ep, 0, sizeof(*ep)); 703 /* make sure we don't zero the endpoint again */ 704 ep->iface_index = USB_IFACE_INDEX_ANY; 705 } 706 } 707 ep++; 708 } 709 710 if (err) 711 return (err); 712 } 713 714 memset(&ips, 0, sizeof(ips)); 715 716 ep_curr = 0; 717 ep_max = 0; 718 719 while ((id = usb_idesc_foreach(udev->cdesc, &ips))) { 720 721 /* check for interface overflow */ 722 if (ips.iface_index == USB_IFACE_MAX) 723 break; /* crazy */ 724 725 iface = udev->ifaces + ips.iface_index; 726 727 /* check for specific interface match */ 728 729 if (cmd == USB_CFG_INIT) { 730 if ((iface_index != USB_IFACE_INDEX_ANY) && 731 (iface_index != ips.iface_index)) { 732 /* wrong interface */ 733 do_init = 0; 734 } else if (alt_index != ips.iface_index_alt) { 735 /* wrong alternate setting */ 736 do_init = 0; 737 } else { 738 /* initialise interface */ 739 do_init = 1; 740 } 741 } else 742 do_init = 0; 743 744 /* check for new interface */ 745 if (ips.iface_index_alt == 0) { 746 /* update current number of endpoints */ 747 ep_curr = ep_max; 748 } 749 /* check for init */ 750 if (do_init) { 751 /* setup the USB interface structure */ 752 iface->idesc = id; 753 /* default setting */ 754 iface->parent_iface_index = USB_IFACE_INDEX_ANY; 755 /* set alternate index */ 756 iface->alt_index = alt_index; 757 } 758 759 DPRINTFN(5, "found idesc nendpt=%d\n", id->bNumEndpoints); 760 761 ed = (struct usb_endpoint_descriptor *)id; 762 763 temp = ep_curr; 764 765 /* iterate all the endpoint descriptors */ 766 while ((ed = usb_edesc_foreach(udev->cdesc, ed))) { 767 768 if (temp == USB_EP_MAX) 769 break; /* crazy */ 770 771 ep = udev->endpoints + temp; 772 773 if (do_init) { 774 void *ecomp; 775 776 ecomp = usb_ed_comp_foreach(udev->cdesc, (void *)ed); 777 if (ecomp != NULL) 778 DPRINTFN(5, "Found endpoint companion descriptor\n"); 779 780 usb_init_endpoint(udev, 781 ips.iface_index, ed, ecomp, ep); 782 } 783 784 temp ++; 785 786 /* find maximum number of endpoints */ 787 if (ep_max < temp) 788 ep_max = temp; 789 790 /* optimalisation */ 791 id = (struct usb_interface_descriptor *)ed; 792 } 793 } 794 795 /* NOTE: It is valid to have no interfaces and no endpoints! */ 796 797 if (cmd == USB_CFG_ALLOC) { 798 udev->ifaces_max = ips.iface_index; 799 udev->ifaces = NULL; 800 if (udev->ifaces_max != 0) { 801 udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max, 802 M_USB, M_WAITOK | M_ZERO); 803 if (udev->ifaces == NULL) { 804 err = USB_ERR_NOMEM; 805 goto done; 806 } 807 } 808 if (ep_max != 0) { 809 udev->endpoints = malloc(sizeof(*ep) * ep_max, 810 M_USB, M_WAITOK | M_ZERO); 811 if (udev->endpoints == NULL) { 812 err = USB_ERR_NOMEM; 813 goto done; 814 } 815 } else { 816 udev->endpoints = NULL; 817 } 818 USB_BUS_LOCK(udev->bus); 819 udev->endpoints_max = ep_max; 820 /* reset any ongoing clear-stall */ 821 udev->ep_curr = NULL; 822 USB_BUS_UNLOCK(udev->bus); 823 } 824 825 done: 826 if (err) { 827 if (cmd == USB_CFG_ALLOC) { 828 cleanup: 829 USB_BUS_LOCK(udev->bus); 830 udev->endpoints_max = 0; 831 /* reset any ongoing clear-stall */ 832 udev->ep_curr = NULL; 833 USB_BUS_UNLOCK(udev->bus); 834 835 /* cleanup */ 836 if (udev->ifaces != NULL) 837 free(udev->ifaces, M_USB); 838 if (udev->endpoints != NULL) 839 free(udev->endpoints, M_USB); 840 841 udev->ifaces = NULL; 842 udev->endpoints = NULL; 843 udev->ifaces_max = 0; 844 } 845 } 846 return (err); 847 } 848 849 /*------------------------------------------------------------------------* 850 * usbd_set_alt_interface_index 851 * 852 * This function will select an alternate interface index for the 853 * given interface index. The interface should not be in use when this 854 * function is called. That means there should not be any open USB 855 * transfers. Else an error is returned. If the alternate setting is 856 * already set this function will simply return success. This function 857 * is called in Host mode and Device mode! 858 * 859 * Returns: 860 * 0: Success 861 * Else: Failure 862 *------------------------------------------------------------------------*/ 863 usb_error_t 864 usbd_set_alt_interface_index(struct usb_device *udev, 865 uint8_t iface_index, uint8_t alt_index) 866 { 867 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 868 usb_error_t err; 869 uint8_t do_unlock; 870 871 /* automatic locking */ 872 if (usbd_enum_is_locked(udev)) { 873 do_unlock = 0; 874 } else { 875 do_unlock = 1; 876 usbd_enum_lock(udev); 877 } 878 if (iface == NULL) { 879 err = USB_ERR_INVAL; 880 goto done; 881 } 882 if (iface->alt_index == alt_index) { 883 /* 884 * Optimise away duplicate setting of 885 * alternate setting in USB Host Mode! 886 */ 887 err = 0; 888 goto done; 889 } 890 #if USB_HAVE_UGEN 891 /* 892 * Free all generic FIFOs for this interface, except control 893 * endpoint FIFOs: 894 */ 895 usb_fifo_free_wrap(udev, iface_index, 0); 896 #endif 897 898 err = usb_config_parse(udev, iface_index, alt_index); 899 if (err) { 900 goto done; 901 } 902 if (iface->alt_index != alt_index) { 903 /* the alternate setting does not exist */ 904 err = USB_ERR_INVAL; 905 goto done; 906 } 907 908 err = usbd_req_set_alt_interface_no(udev, NULL, iface_index, 909 iface->idesc->bAlternateSetting); 910 911 done: 912 if (do_unlock) 913 usbd_enum_unlock(udev); 914 915 return (err); 916 } 917 918 /*------------------------------------------------------------------------* 919 * usbd_set_endpoint_stall 920 * 921 * This function is used to make a BULK or INTERRUPT endpoint send 922 * STALL tokens in USB device mode. 923 * 924 * Returns: 925 * 0: Success 926 * Else: Failure 927 *------------------------------------------------------------------------*/ 928 usb_error_t 929 usbd_set_endpoint_stall(struct usb_device *udev, struct usb_endpoint *ep, 930 uint8_t do_stall) 931 { 932 struct usb_xfer *xfer; 933 uint8_t et; 934 uint8_t was_stalled; 935 936 if (ep == NULL) { 937 /* nothing to do */ 938 DPRINTF("Cannot find endpoint\n"); 939 /* 940 * Pretend that the clear or set stall request is 941 * successful else some USB host stacks can do 942 * strange things, especially when a control endpoint 943 * stalls. 944 */ 945 return (0); 946 } 947 et = (ep->edesc->bmAttributes & UE_XFERTYPE); 948 949 if ((et != UE_BULK) && 950 (et != UE_INTERRUPT)) { 951 /* 952 * Should not stall control 953 * nor isochronous endpoints. 954 */ 955 DPRINTF("Invalid endpoint\n"); 956 return (0); 957 } 958 USB_BUS_LOCK(udev->bus); 959 960 /* store current stall state */ 961 was_stalled = ep->is_stalled; 962 963 /* check for no change */ 964 if (was_stalled && do_stall) { 965 /* if the endpoint is already stalled do nothing */ 966 USB_BUS_UNLOCK(udev->bus); 967 DPRINTF("No change\n"); 968 return (0); 969 } 970 /* set stalled state */ 971 ep->is_stalled = 1; 972 973 if (do_stall || (!was_stalled)) { 974 if (!was_stalled) { 975 /* lookup the current USB transfer, if any */ 976 xfer = ep->endpoint_q.curr; 977 } else { 978 xfer = NULL; 979 } 980 981 /* 982 * If "xfer" is non-NULL the "set_stall" method will 983 * complete the USB transfer like in case of a timeout 984 * setting the error code "USB_ERR_STALLED". 985 */ 986 (udev->bus->methods->set_stall) (udev, xfer, ep, &do_stall); 987 } 988 if (!do_stall) { 989 ep->toggle_next = 0; /* reset data toggle */ 990 ep->is_stalled = 0; /* clear stalled state */ 991 992 (udev->bus->methods->clear_stall) (udev, ep); 993 994 /* start up the current or next transfer, if any */ 995 usb_command_wrapper(&ep->endpoint_q, ep->endpoint_q.curr); 996 } 997 USB_BUS_UNLOCK(udev->bus); 998 return (0); 999 } 1000 1001 /*------------------------------------------------------------------------* 1002 * usb_reset_iface_endpoints - used in USB device side mode 1003 *------------------------------------------------------------------------*/ 1004 usb_error_t 1005 usb_reset_iface_endpoints(struct usb_device *udev, uint8_t iface_index) 1006 { 1007 struct usb_endpoint *ep; 1008 struct usb_endpoint *ep_end; 1009 1010 ep = udev->endpoints; 1011 ep_end = udev->endpoints + udev->endpoints_max; 1012 1013 for (; ep != ep_end; ep++) { 1014 1015 if ((ep->edesc == NULL) || 1016 (ep->iface_index != iface_index)) { 1017 continue; 1018 } 1019 /* simulate a clear stall from the peer */ 1020 usbd_set_endpoint_stall(udev, ep, 0); 1021 } 1022 return (0); 1023 } 1024 1025 /*------------------------------------------------------------------------* 1026 * usb_detach_device_sub 1027 * 1028 * This function will try to detach an USB device. If it fails a panic 1029 * will result. 1030 * 1031 * Flag values, see "USB_UNCFG_FLAG_XXX". 1032 *------------------------------------------------------------------------*/ 1033 static void 1034 usb_detach_device_sub(struct usb_device *udev, device_t *ppdev, 1035 char **ppnpinfo, uint8_t flag) 1036 { 1037 device_t dev; 1038 char *pnpinfo; 1039 int err; 1040 1041 dev = *ppdev; 1042 if (dev) { 1043 /* 1044 * NOTE: It is important to clear "*ppdev" before deleting 1045 * the child due to some device methods being called late 1046 * during the delete process ! 1047 */ 1048 *ppdev = NULL; 1049 1050 device_printf(dev, "at %s, port %d, addr %d " 1051 "(disconnected)\n", 1052 device_get_nameunit(udev->parent_dev), 1053 udev->port_no, udev->address); 1054 1055 if (device_is_attached(dev)) { 1056 if (udev->flags.peer_suspended) { 1057 err = DEVICE_RESUME(dev); 1058 if (err) { 1059 device_printf(dev, "Resume failed\n"); 1060 } 1061 } 1062 if (device_detach(dev)) { 1063 goto error; 1064 } 1065 } 1066 if (device_delete_child(udev->parent_dev, dev)) { 1067 goto error; 1068 } 1069 } 1070 1071 pnpinfo = *ppnpinfo; 1072 if (pnpinfo != NULL) { 1073 *ppnpinfo = NULL; 1074 free(pnpinfo, M_USBDEV); 1075 } 1076 return; 1077 1078 error: 1079 /* Detach is not allowed to fail in the USB world */ 1080 panic("usb_detach_device_sub: A USB driver would not detach\n"); 1081 } 1082 1083 /*------------------------------------------------------------------------* 1084 * usb_detach_device 1085 * 1086 * The following function will detach the matching interfaces. 1087 * This function is NULL safe. 1088 * 1089 * Flag values, see "USB_UNCFG_FLAG_XXX". 1090 *------------------------------------------------------------------------*/ 1091 void 1092 usb_detach_device(struct usb_device *udev, uint8_t iface_index, 1093 uint8_t flag) 1094 { 1095 struct usb_interface *iface; 1096 uint8_t i; 1097 1098 if (udev == NULL) { 1099 /* nothing to do */ 1100 return; 1101 } 1102 DPRINTFN(4, "udev=%p\n", udev); 1103 1104 sx_assert(&udev->enum_sx, SA_LOCKED); 1105 1106 /* 1107 * First detach the child to give the child's detach routine a 1108 * chance to detach the sub-devices in the correct order. 1109 * Then delete the child using "device_delete_child()" which 1110 * will detach all sub-devices from the bottom and upwards! 1111 */ 1112 if (iface_index != USB_IFACE_INDEX_ANY) { 1113 i = iface_index; 1114 iface_index = i + 1; 1115 } else { 1116 i = 0; 1117 iface_index = USB_IFACE_MAX; 1118 } 1119 1120 /* do the detach */ 1121 1122 for (; i != iface_index; i++) { 1123 1124 iface = usbd_get_iface(udev, i); 1125 if (iface == NULL) { 1126 /* looks like the end of the USB interfaces */ 1127 break; 1128 } 1129 usb_detach_device_sub(udev, &iface->subdev, 1130 &iface->pnpinfo, flag); 1131 } 1132 } 1133 1134 /*------------------------------------------------------------------------* 1135 * usb_probe_and_attach_sub 1136 * 1137 * Returns: 1138 * 0: Success 1139 * Else: Failure 1140 *------------------------------------------------------------------------*/ 1141 static uint8_t 1142 usb_probe_and_attach_sub(struct usb_device *udev, 1143 struct usb_attach_arg *uaa) 1144 { 1145 struct usb_interface *iface; 1146 device_t dev; 1147 int err; 1148 1149 iface = uaa->iface; 1150 if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) { 1151 /* leave interface alone */ 1152 return (0); 1153 } 1154 dev = iface->subdev; 1155 if (dev) { 1156 1157 /* clean up after module unload */ 1158 1159 if (device_is_attached(dev)) { 1160 /* already a device there */ 1161 return (0); 1162 } 1163 /* clear "iface->subdev" as early as possible */ 1164 1165 iface->subdev = NULL; 1166 1167 if (device_delete_child(udev->parent_dev, dev)) { 1168 1169 /* 1170 * Panic here, else one can get a double call 1171 * to device_detach(). USB devices should 1172 * never fail on detach! 1173 */ 1174 panic("device_delete_child() failed\n"); 1175 } 1176 } 1177 if (uaa->temp_dev == NULL) { 1178 1179 /* create a new child */ 1180 uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1); 1181 if (uaa->temp_dev == NULL) { 1182 device_printf(udev->parent_dev, 1183 "Device creation failed\n"); 1184 return (1); /* failure */ 1185 } 1186 device_set_ivars(uaa->temp_dev, uaa); 1187 device_quiet(uaa->temp_dev); 1188 } 1189 /* 1190 * Set "subdev" before probe and attach so that "devd" gets 1191 * the information it needs. 1192 */ 1193 iface->subdev = uaa->temp_dev; 1194 1195 if (device_probe_and_attach(iface->subdev) == 0) { 1196 /* 1197 * The USB attach arguments are only available during probe 1198 * and attach ! 1199 */ 1200 uaa->temp_dev = NULL; 1201 device_set_ivars(iface->subdev, NULL); 1202 1203 if (udev->flags.peer_suspended) { 1204 err = DEVICE_SUSPEND(iface->subdev); 1205 if (err) 1206 device_printf(iface->subdev, "Suspend failed\n"); 1207 } 1208 return (0); /* success */ 1209 } else { 1210 /* No USB driver found */ 1211 iface->subdev = NULL; 1212 } 1213 return (1); /* failure */ 1214 } 1215 1216 /*------------------------------------------------------------------------* 1217 * usbd_set_parent_iface 1218 * 1219 * Using this function will lock the alternate interface setting on an 1220 * interface. It is typically used for multi interface drivers. In USB 1221 * device side mode it is assumed that the alternate interfaces all 1222 * have the same endpoint descriptors. The default parent index value 1223 * is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not 1224 * locked. 1225 *------------------------------------------------------------------------*/ 1226 void 1227 usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index, 1228 uint8_t parent_index) 1229 { 1230 struct usb_interface *iface; 1231 1232 iface = usbd_get_iface(udev, iface_index); 1233 if (iface) { 1234 iface->parent_iface_index = parent_index; 1235 } 1236 } 1237 1238 static void 1239 usb_init_attach_arg(struct usb_device *udev, 1240 struct usb_attach_arg *uaa) 1241 { 1242 memset(uaa, 0, sizeof(*uaa)); 1243 1244 uaa->device = udev; 1245 uaa->usb_mode = udev->flags.usb_mode; 1246 uaa->port = udev->port_no; 1247 uaa->dev_state = UAA_DEV_READY; 1248 1249 uaa->info.idVendor = UGETW(udev->ddesc.idVendor); 1250 uaa->info.idProduct = UGETW(udev->ddesc.idProduct); 1251 uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice); 1252 uaa->info.bDeviceClass = udev->ddesc.bDeviceClass; 1253 uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass; 1254 uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol; 1255 uaa->info.bConfigIndex = udev->curr_config_index; 1256 uaa->info.bConfigNum = udev->curr_config_no; 1257 } 1258 1259 /*------------------------------------------------------------------------* 1260 * usb_probe_and_attach 1261 * 1262 * This function is called from "uhub_explore_sub()", 1263 * "usb_handle_set_config()" and "usb_handle_request()". 1264 * 1265 * Returns: 1266 * 0: Success 1267 * Else: A control transfer failed 1268 *------------------------------------------------------------------------*/ 1269 usb_error_t 1270 usb_probe_and_attach(struct usb_device *udev, uint8_t iface_index) 1271 { 1272 struct usb_attach_arg uaa; 1273 struct usb_interface *iface; 1274 uint8_t i; 1275 uint8_t j; 1276 uint8_t do_unlock; 1277 1278 if (udev == NULL) { 1279 DPRINTF("udev == NULL\n"); 1280 return (USB_ERR_INVAL); 1281 } 1282 /* automatic locking */ 1283 if (usbd_enum_is_locked(udev)) { 1284 do_unlock = 0; 1285 } else { 1286 do_unlock = 1; 1287 usbd_enum_lock(udev); 1288 } 1289 1290 if (udev->curr_config_index == USB_UNCONFIG_INDEX) { 1291 /* do nothing - no configuration has been set */ 1292 goto done; 1293 } 1294 /* setup USB attach arguments */ 1295 1296 usb_init_attach_arg(udev, &uaa); 1297 1298 /* 1299 * If the whole USB device is targeted, invoke the USB event 1300 * handler(s): 1301 */ 1302 if (iface_index == USB_IFACE_INDEX_ANY) { 1303 1304 EVENTHANDLER_INVOKE(usb_dev_configured, udev, &uaa); 1305 1306 if (uaa.dev_state != UAA_DEV_READY) { 1307 /* leave device unconfigured */ 1308 usb_unconfigure(udev, 0); 1309 goto done; 1310 } 1311 } 1312 1313 /* Check if only one interface should be probed: */ 1314 if (iface_index != USB_IFACE_INDEX_ANY) { 1315 i = iface_index; 1316 j = i + 1; 1317 } else { 1318 i = 0; 1319 j = USB_IFACE_MAX; 1320 } 1321 1322 /* Do the probe and attach */ 1323 for (; i != j; i++) { 1324 1325 iface = usbd_get_iface(udev, i); 1326 if (iface == NULL) { 1327 /* 1328 * Looks like the end of the USB 1329 * interfaces ! 1330 */ 1331 DPRINTFN(2, "end of interfaces " 1332 "at %u\n", i); 1333 break; 1334 } 1335 if (iface->idesc == NULL) { 1336 /* no interface descriptor */ 1337 continue; 1338 } 1339 uaa.iface = iface; 1340 1341 uaa.info.bInterfaceClass = 1342 iface->idesc->bInterfaceClass; 1343 uaa.info.bInterfaceSubClass = 1344 iface->idesc->bInterfaceSubClass; 1345 uaa.info.bInterfaceProtocol = 1346 iface->idesc->bInterfaceProtocol; 1347 uaa.info.bIfaceIndex = i; 1348 uaa.info.bIfaceNum = 1349 iface->idesc->bInterfaceNumber; 1350 uaa.driver_info = 0; /* reset driver_info */ 1351 1352 DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n", 1353 uaa.info.bInterfaceClass, 1354 uaa.info.bInterfaceSubClass, 1355 uaa.info.bInterfaceProtocol, 1356 uaa.info.bIfaceIndex, 1357 uaa.info.bIfaceNum); 1358 1359 usb_probe_and_attach_sub(udev, &uaa); 1360 1361 /* 1362 * Remove the leftover child, if any, to enforce that 1363 * a new nomatch devd event is generated for the next 1364 * interface if no driver is found: 1365 */ 1366 if (uaa.temp_dev == NULL) 1367 continue; 1368 if (device_delete_child(udev->parent_dev, uaa.temp_dev)) 1369 DPRINTFN(0, "device delete child failed\n"); 1370 uaa.temp_dev = NULL; 1371 } 1372 done: 1373 if (do_unlock) 1374 usbd_enum_unlock(udev); 1375 1376 return (0); 1377 } 1378 1379 /*------------------------------------------------------------------------* 1380 * usb_suspend_resume_sub 1381 * 1382 * This function is called when the suspend or resume methods should 1383 * be executed on an USB device. 1384 *------------------------------------------------------------------------*/ 1385 static void 1386 usb_suspend_resume_sub(struct usb_device *udev, device_t dev, uint8_t do_suspend) 1387 { 1388 int err; 1389 1390 if (dev == NULL) { 1391 return; 1392 } 1393 if (!device_is_attached(dev)) { 1394 return; 1395 } 1396 if (do_suspend) { 1397 err = DEVICE_SUSPEND(dev); 1398 } else { 1399 err = DEVICE_RESUME(dev); 1400 } 1401 if (err) { 1402 device_printf(dev, "%s failed\n", 1403 do_suspend ? "Suspend" : "Resume"); 1404 } 1405 } 1406 1407 /*------------------------------------------------------------------------* 1408 * usb_suspend_resume 1409 * 1410 * The following function will suspend or resume the USB device. 1411 * 1412 * Returns: 1413 * 0: Success 1414 * Else: Failure 1415 *------------------------------------------------------------------------*/ 1416 usb_error_t 1417 usb_suspend_resume(struct usb_device *udev, uint8_t do_suspend) 1418 { 1419 struct usb_interface *iface; 1420 uint8_t i; 1421 1422 if (udev == NULL) { 1423 /* nothing to do */ 1424 return (0); 1425 } 1426 DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend); 1427 1428 sx_assert(&udev->sr_sx, SA_LOCKED); 1429 1430 USB_BUS_LOCK(udev->bus); 1431 /* filter the suspend events */ 1432 if (udev->flags.peer_suspended == do_suspend) { 1433 USB_BUS_UNLOCK(udev->bus); 1434 /* nothing to do */ 1435 return (0); 1436 } 1437 udev->flags.peer_suspended = do_suspend; 1438 USB_BUS_UNLOCK(udev->bus); 1439 1440 /* do the suspend or resume */ 1441 1442 for (i = 0; i != USB_IFACE_MAX; i++) { 1443 1444 iface = usbd_get_iface(udev, i); 1445 if (iface == NULL) { 1446 /* looks like the end of the USB interfaces */ 1447 break; 1448 } 1449 usb_suspend_resume_sub(udev, iface->subdev, do_suspend); 1450 } 1451 return (0); 1452 } 1453 1454 /*------------------------------------------------------------------------* 1455 * usbd_clear_stall_proc 1456 * 1457 * This function performs generic USB clear stall operations. 1458 *------------------------------------------------------------------------*/ 1459 static void 1460 usbd_clear_stall_proc(struct usb_proc_msg *_pm) 1461 { 1462 struct usb_clear_stall_msg *pm = (void *)_pm; 1463 struct usb_device *udev = pm->udev; 1464 1465 /* Change lock */ 1466 USB_BUS_UNLOCK(udev->bus); 1467 mtx_lock(&udev->device_mtx); 1468 1469 /* Start clear stall callback */ 1470 usbd_transfer_start(udev->ctrl_xfer[1]); 1471 1472 /* Change lock */ 1473 mtx_unlock(&udev->device_mtx); 1474 USB_BUS_LOCK(udev->bus); 1475 } 1476 1477 /*------------------------------------------------------------------------* 1478 * usb_alloc_device 1479 * 1480 * This function allocates a new USB device. This function is called 1481 * when a new device has been put in the powered state, but not yet in 1482 * the addressed state. Get initial descriptor, set the address, get 1483 * full descriptor and get strings. 1484 * 1485 * Return values: 1486 * 0: Failure 1487 * Else: Success 1488 *------------------------------------------------------------------------*/ 1489 struct usb_device * 1490 usb_alloc_device(device_t parent_dev, struct usb_bus *bus, 1491 struct usb_device *parent_hub, uint8_t depth, uint8_t port_index, 1492 uint8_t port_no, enum usb_dev_speed speed, enum usb_hc_mode mode) 1493 { 1494 struct usb_attach_arg uaa; 1495 struct usb_device *udev; 1496 struct usb_device *adev; 1497 struct usb_device *hub; 1498 uint8_t *scratch_ptr; 1499 size_t scratch_size; 1500 usb_error_t err; 1501 uint8_t device_index; 1502 uint8_t config_index; 1503 uint8_t config_quirk; 1504 uint8_t set_config_failed; 1505 1506 DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, " 1507 "port_index=%u, port_no=%u, speed=%u, usb_mode=%u\n", 1508 parent_dev, bus, parent_hub, depth, port_index, port_no, 1509 speed, mode); 1510 1511 /* 1512 * Find an unused device index. In USB Host mode this is the 1513 * same as the device address. 1514 * 1515 * Device index zero is not used and device index 1 should 1516 * always be the root hub. 1517 */ 1518 for (device_index = USB_ROOT_HUB_ADDR; 1519 (device_index != bus->devices_max) && 1520 (bus->devices[device_index] != NULL); 1521 device_index++) /* nop */; 1522 1523 if (device_index == bus->devices_max) { 1524 device_printf(bus->bdev, 1525 "No free USB device index for new device\n"); 1526 return (NULL); 1527 } 1528 1529 if (depth > 0x10) { 1530 device_printf(bus->bdev, 1531 "Invalid device depth\n"); 1532 return (NULL); 1533 } 1534 udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO); 1535 if (udev == NULL) { 1536 return (NULL); 1537 } 1538 /* initialise our SX-lock */ 1539 sx_init_flags(&udev->ctrl_sx, "USB device SX lock", SX_DUPOK); 1540 1541 /* initialise our SX-lock */ 1542 sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK); 1543 sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS); 1544 1545 cv_init(&udev->ctrlreq_cv, "WCTRL"); 1546 cv_init(&udev->ref_cv, "UGONE"); 1547 1548 /* initialise our mutex */ 1549 mtx_init(&udev->device_mtx, "USB device mutex", NULL, MTX_DEF); 1550 1551 /* initialise generic clear stall */ 1552 udev->cs_msg[0].hdr.pm_callback = &usbd_clear_stall_proc; 1553 udev->cs_msg[0].udev = udev; 1554 udev->cs_msg[1].hdr.pm_callback = &usbd_clear_stall_proc; 1555 udev->cs_msg[1].udev = udev; 1556 1557 /* initialise some USB device fields */ 1558 udev->parent_hub = parent_hub; 1559 udev->parent_dev = parent_dev; 1560 udev->port_index = port_index; 1561 udev->port_no = port_no; 1562 udev->depth = depth; 1563 udev->bus = bus; 1564 udev->address = USB_START_ADDR; /* default value */ 1565 udev->plugtime = (usb_ticks_t)ticks; 1566 /* 1567 * We need to force the power mode to "on" because there are plenty 1568 * of USB devices out there that do not work very well with 1569 * automatic suspend and resume! 1570 */ 1571 udev->power_mode = usbd_filter_power_mode(udev, USB_POWER_MODE_ON); 1572 udev->pwr_save.last_xfer_time = ticks; 1573 /* we are not ready yet */ 1574 udev->refcount = 1; 1575 1576 /* set up default endpoint descriptor */ 1577 udev->ctrl_ep_desc.bLength = sizeof(udev->ctrl_ep_desc); 1578 udev->ctrl_ep_desc.bDescriptorType = UDESC_ENDPOINT; 1579 udev->ctrl_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT; 1580 udev->ctrl_ep_desc.bmAttributes = UE_CONTROL; 1581 udev->ctrl_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET; 1582 udev->ctrl_ep_desc.wMaxPacketSize[1] = 0; 1583 udev->ctrl_ep_desc.bInterval = 0; 1584 1585 /* set up default endpoint companion descriptor */ 1586 udev->ctrl_ep_comp_desc.bLength = sizeof(udev->ctrl_ep_comp_desc); 1587 udev->ctrl_ep_comp_desc.bDescriptorType = UDESC_ENDPOINT_SS_COMP; 1588 1589 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET; 1590 1591 udev->speed = speed; 1592 udev->flags.usb_mode = mode; 1593 1594 /* search for our High Speed USB HUB, if any */ 1595 1596 adev = udev; 1597 hub = udev->parent_hub; 1598 1599 while (hub) { 1600 if (hub->speed == USB_SPEED_HIGH) { 1601 udev->hs_hub_addr = hub->address; 1602 udev->parent_hs_hub = hub; 1603 udev->hs_port_no = adev->port_no; 1604 break; 1605 } 1606 adev = hub; 1607 hub = hub->parent_hub; 1608 } 1609 1610 /* init the default endpoint */ 1611 usb_init_endpoint(udev, 0, 1612 &udev->ctrl_ep_desc, 1613 &udev->ctrl_ep_comp_desc, 1614 &udev->ctrl_ep); 1615 1616 /* set device index */ 1617 udev->device_index = device_index; 1618 1619 #if USB_HAVE_UGEN 1620 /* Create ugen name */ 1621 snprintf(udev->ugen_name, sizeof(udev->ugen_name), 1622 USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev), 1623 device_index); 1624 LIST_INIT(&udev->pd_list); 1625 1626 /* Create the control endpoint device */ 1627 udev->ctrl_dev = usb_make_dev(udev, NULL, 0, 0, 1628 FREAD|FWRITE, UID_ROOT, GID_OPERATOR, 0600); 1629 1630 /* Create a link from /dev/ugenX.X to the default endpoint */ 1631 if (udev->ctrl_dev != NULL) 1632 make_dev_alias(udev->ctrl_dev->cdev, "%s", udev->ugen_name); 1633 #endif 1634 /* Initialise device */ 1635 if (bus->methods->device_init != NULL) { 1636 err = (bus->methods->device_init) (udev); 1637 if (err != 0) { 1638 DPRINTFN(0, "device init %d failed " 1639 "(%s, ignored)\n", device_index, 1640 usbd_errstr(err)); 1641 goto done; 1642 } 1643 } 1644 /* set powered device state after device init is complete */ 1645 usb_set_device_state(udev, USB_STATE_POWERED); 1646 1647 if (udev->flags.usb_mode == USB_MODE_HOST) { 1648 1649 err = usbd_req_set_address(udev, NULL, device_index); 1650 1651 /* 1652 * This is the new USB device address from now on, if 1653 * the set address request didn't set it already. 1654 */ 1655 if (udev->address == USB_START_ADDR) 1656 udev->address = device_index; 1657 1658 /* 1659 * We ignore any set-address errors, hence there are 1660 * buggy USB devices out there that actually receive 1661 * the SETUP PID, but manage to set the address before 1662 * the STATUS stage is ACK'ed. If the device responds 1663 * to the subsequent get-descriptor at the new 1664 * address, then we know that the set-address command 1665 * was successful. 1666 */ 1667 if (err) { 1668 DPRINTFN(0, "set address %d failed " 1669 "(%s, ignored)\n", udev->address, 1670 usbd_errstr(err)); 1671 } 1672 } else { 1673 /* We are not self powered */ 1674 udev->flags.self_powered = 0; 1675 1676 /* Set unconfigured state */ 1677 udev->curr_config_no = USB_UNCONFIG_NO; 1678 udev->curr_config_index = USB_UNCONFIG_INDEX; 1679 1680 /* Setup USB descriptors */ 1681 err = (usb_temp_setup_by_index_p) (udev, usb_template); 1682 if (err) { 1683 DPRINTFN(0, "setting up USB template failed maybe the USB " 1684 "template module has not been loaded\n"); 1685 goto done; 1686 } 1687 } 1688 usb_set_device_state(udev, USB_STATE_ADDRESSED); 1689 1690 /* setup the device descriptor and the initial "wMaxPacketSize" */ 1691 err = usbd_setup_device_desc(udev, NULL); 1692 1693 if (err != 0) { 1694 /* XXX try to re-enumerate the device */ 1695 err = usbd_req_re_enumerate(udev, NULL); 1696 if (err) 1697 goto done; 1698 } 1699 1700 /* 1701 * Setup temporary USB attach args so that we can figure out some 1702 * basic quirks for this device. 1703 */ 1704 usb_init_attach_arg(udev, &uaa); 1705 1706 if (usb_test_quirk(&uaa, UQ_BUS_POWERED)) { 1707 udev->flags.uq_bus_powered = 1; 1708 } 1709 if (usb_test_quirk(&uaa, UQ_NO_STRINGS)) { 1710 udev->flags.no_strings = 1; 1711 } 1712 /* 1713 * Workaround for buggy USB devices. 1714 * 1715 * It appears that some string-less USB chips will crash and 1716 * disappear if any attempts are made to read any string 1717 * descriptors. 1718 * 1719 * Try to detect such chips by checking the strings in the USB 1720 * device descriptor. If no strings are present there we 1721 * simply disable all USB strings. 1722 */ 1723 scratch_ptr = udev->bus->scratch[0].data; 1724 scratch_size = sizeof(udev->bus->scratch[0].data); 1725 1726 if (udev->ddesc.iManufacturer || 1727 udev->ddesc.iProduct || 1728 udev->ddesc.iSerialNumber) { 1729 /* read out the language ID string */ 1730 err = usbd_req_get_string_desc(udev, NULL, 1731 (char *)scratch_ptr, 4, 0, USB_LANGUAGE_TABLE); 1732 } else { 1733 err = USB_ERR_INVAL; 1734 } 1735 1736 if (err || (scratch_ptr[0] < 4)) { 1737 udev->flags.no_strings = 1; 1738 } else { 1739 uint16_t langid; 1740 uint16_t pref; 1741 uint16_t mask; 1742 uint8_t x; 1743 1744 /* load preferred value and mask */ 1745 pref = usb_lang_id; 1746 mask = usb_lang_mask; 1747 1748 /* align length correctly */ 1749 scratch_ptr[0] &= ~1; 1750 1751 /* fix compiler warning */ 1752 langid = 0; 1753 1754 /* search for preferred language */ 1755 for (x = 2; (x < scratch_ptr[0]); x += 2) { 1756 langid = UGETW(scratch_ptr + x); 1757 if ((langid & mask) == pref) 1758 break; 1759 } 1760 if (x >= scratch_ptr[0]) { 1761 /* pick the first language as the default */ 1762 DPRINTFN(1, "Using first language\n"); 1763 langid = UGETW(scratch_ptr + 2); 1764 } 1765 1766 DPRINTFN(1, "Language selected: 0x%04x\n", langid); 1767 udev->langid = langid; 1768 } 1769 1770 /* assume 100mA bus powered for now. Changed when configured. */ 1771 udev->power = USB_MIN_POWER; 1772 /* fetch the vendor and product strings from the device */ 1773 usbd_set_device_strings(udev); 1774 1775 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 1776 /* USB device mode setup is complete */ 1777 err = 0; 1778 goto config_done; 1779 } 1780 1781 /* 1782 * Most USB devices should attach to config index 0 by 1783 * default 1784 */ 1785 if (usb_test_quirk(&uaa, UQ_CFG_INDEX_0)) { 1786 config_index = 0; 1787 config_quirk = 1; 1788 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_1)) { 1789 config_index = 1; 1790 config_quirk = 1; 1791 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_2)) { 1792 config_index = 2; 1793 config_quirk = 1; 1794 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_3)) { 1795 config_index = 3; 1796 config_quirk = 1; 1797 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_4)) { 1798 config_index = 4; 1799 config_quirk = 1; 1800 } else { 1801 config_index = 0; 1802 config_quirk = 0; 1803 } 1804 1805 set_config_failed = 0; 1806 repeat_set_config: 1807 1808 DPRINTF("setting config %u\n", config_index); 1809 1810 /* get the USB device configured */ 1811 err = usbd_set_config_index(udev, config_index); 1812 if (err) { 1813 if (udev->ddesc.bNumConfigurations != 0) { 1814 if (!set_config_failed) { 1815 set_config_failed = 1; 1816 /* XXX try to re-enumerate the device */ 1817 err = usbd_req_re_enumerate(udev, NULL); 1818 if (err == 0) 1819 goto repeat_set_config; 1820 } 1821 DPRINTFN(0, "Failure selecting configuration index %u:" 1822 "%s, port %u, addr %u (ignored)\n", 1823 config_index, usbd_errstr(err), udev->port_no, 1824 udev->address); 1825 } 1826 /* 1827 * Some USB devices do not have any configurations. Ignore any 1828 * set config failures! 1829 */ 1830 err = 0; 1831 goto config_done; 1832 } 1833 if (!config_quirk && config_index + 1 < udev->ddesc.bNumConfigurations) { 1834 if ((udev->cdesc->bNumInterface < 2) && 1835 usbd_get_no_descriptors(udev->cdesc, UDESC_ENDPOINT) == 0) { 1836 DPRINTFN(0, "Found no endpoints, trying next config\n"); 1837 config_index++; 1838 goto repeat_set_config; 1839 } 1840 if (config_index == 0) { 1841 /* 1842 * Try to figure out if we have an 1843 * auto-install disk there: 1844 */ 1845 if (usb_iface_is_cdrom(udev, 0)) { 1846 DPRINTFN(0, "Found possible auto-install " 1847 "disk (trying next config)\n"); 1848 config_index++; 1849 goto repeat_set_config; 1850 } 1851 } 1852 } 1853 if (set_config_failed == 0 && config_index == 0 && 1854 usb_test_quirk(&uaa, UQ_MSC_NO_SYNC_CACHE) == 0 && 1855 usb_test_quirk(&uaa, UQ_MSC_NO_GETMAXLUN) == 0) { 1856 1857 /* 1858 * Try to figure out if there are any MSC quirks we 1859 * should apply automatically: 1860 */ 1861 err = usb_msc_auto_quirk(udev, 0); 1862 1863 if (err != 0) { 1864 set_config_failed = 1; 1865 goto repeat_set_config; 1866 } 1867 } 1868 1869 config_done: 1870 DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n", 1871 udev->address, udev, udev->parent_hub); 1872 1873 /* register our device - we are ready */ 1874 usb_bus_port_set_device(bus, parent_hub ? 1875 parent_hub->hub->ports + port_index : NULL, udev, device_index); 1876 1877 #if USB_HAVE_UGEN 1878 /* Symlink the ugen device name */ 1879 udev->ugen_symlink = usb_alloc_symlink(udev->ugen_name); 1880 1881 /* Announce device */ 1882 printf("%s: <%s> at %s\n", udev->ugen_name, 1883 usb_get_manufacturer(udev), 1884 device_get_nameunit(udev->bus->bdev)); 1885 #endif 1886 1887 #if USB_HAVE_DEVCTL 1888 usb_notify_addq("ATTACH", udev); 1889 #endif 1890 done: 1891 if (err) { 1892 /* 1893 * Free USB device and all subdevices, if any. 1894 */ 1895 usb_free_device(udev, 0); 1896 udev = NULL; 1897 } 1898 return (udev); 1899 } 1900 1901 #if USB_HAVE_UGEN 1902 struct usb_fs_privdata * 1903 usb_make_dev(struct usb_device *udev, const char *devname, int ep, 1904 int fi, int rwmode, uid_t uid, gid_t gid, int mode) 1905 { 1906 struct usb_fs_privdata* pd; 1907 char buffer[32]; 1908 1909 /* Store information to locate ourselves again later */ 1910 pd = malloc(sizeof(struct usb_fs_privdata), M_USBDEV, 1911 M_WAITOK | M_ZERO); 1912 pd->bus_index = device_get_unit(udev->bus->bdev); 1913 pd->dev_index = udev->device_index; 1914 pd->ep_addr = ep; 1915 pd->fifo_index = fi; 1916 pd->mode = rwmode; 1917 1918 /* Now, create the device itself */ 1919 if (devname == NULL) { 1920 devname = buffer; 1921 snprintf(buffer, sizeof(buffer), USB_DEVICE_DIR "/%u.%u.%u", 1922 pd->bus_index, pd->dev_index, pd->ep_addr); 1923 } 1924 1925 pd->cdev = make_dev(&usb_devsw, 0, uid, gid, mode, "%s", devname); 1926 1927 if (pd->cdev == NULL) { 1928 DPRINTFN(0, "Failed to create device %s\n", devname); 1929 free(pd, M_USBDEV); 1930 return (NULL); 1931 } 1932 1933 /* XXX setting si_drv1 and creating the device is not atomic! */ 1934 pd->cdev->si_drv1 = pd; 1935 1936 return (pd); 1937 } 1938 1939 void 1940 usb_destroy_dev(struct usb_fs_privdata *pd) 1941 { 1942 if (pd == NULL) 1943 return; 1944 1945 destroy_dev(pd->cdev); 1946 1947 free(pd, M_USBDEV); 1948 } 1949 1950 static void 1951 usb_cdev_create(struct usb_device *udev) 1952 { 1953 struct usb_config_descriptor *cd; 1954 struct usb_endpoint_descriptor *ed; 1955 struct usb_descriptor *desc; 1956 struct usb_fs_privdata* pd; 1957 int inmode, outmode, inmask, outmask, mode; 1958 uint8_t ep; 1959 1960 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries")); 1961 1962 DPRINTFN(2, "Creating device nodes\n"); 1963 1964 if (usbd_get_mode(udev) == USB_MODE_DEVICE) { 1965 inmode = FWRITE; 1966 outmode = FREAD; 1967 } else { /* USB_MODE_HOST */ 1968 inmode = FREAD; 1969 outmode = FWRITE; 1970 } 1971 1972 inmask = 0; 1973 outmask = 0; 1974 desc = NULL; 1975 1976 /* 1977 * Collect all used endpoint numbers instead of just 1978 * generating 16 static endpoints. 1979 */ 1980 cd = usbd_get_config_descriptor(udev); 1981 while ((desc = usb_desc_foreach(cd, desc))) { 1982 /* filter out all endpoint descriptors */ 1983 if ((desc->bDescriptorType == UDESC_ENDPOINT) && 1984 (desc->bLength >= sizeof(*ed))) { 1985 ed = (struct usb_endpoint_descriptor *)desc; 1986 1987 /* update masks */ 1988 ep = ed->bEndpointAddress; 1989 if (UE_GET_DIR(ep) == UE_DIR_OUT) 1990 outmask |= 1 << UE_GET_ADDR(ep); 1991 else 1992 inmask |= 1 << UE_GET_ADDR(ep); 1993 } 1994 } 1995 1996 /* Create all available endpoints except EP0 */ 1997 for (ep = 1; ep < 16; ep++) { 1998 mode = (inmask & (1 << ep)) ? inmode : 0; 1999 mode |= (outmask & (1 << ep)) ? outmode : 0; 2000 if (mode == 0) 2001 continue; /* no IN or OUT endpoint */ 2002 2003 pd = usb_make_dev(udev, NULL, ep, 0, 2004 mode, UID_ROOT, GID_OPERATOR, 0600); 2005 2006 if (pd != NULL) 2007 LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next); 2008 } 2009 } 2010 2011 static void 2012 usb_cdev_free(struct usb_device *udev) 2013 { 2014 struct usb_fs_privdata* pd; 2015 2016 DPRINTFN(2, "Freeing device nodes\n"); 2017 2018 while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) { 2019 KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt")); 2020 2021 LIST_REMOVE(pd, pd_next); 2022 2023 usb_destroy_dev(pd); 2024 } 2025 } 2026 #endif 2027 2028 /*------------------------------------------------------------------------* 2029 * usb_free_device 2030 * 2031 * This function is NULL safe and will free an USB device and its 2032 * children devices, if any. 2033 * 2034 * Flag values: Reserved, set to zero. 2035 *------------------------------------------------------------------------*/ 2036 void 2037 usb_free_device(struct usb_device *udev, uint8_t flag) 2038 { 2039 struct usb_bus *bus; 2040 2041 if (udev == NULL) 2042 return; /* already freed */ 2043 2044 DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no); 2045 2046 bus = udev->bus; 2047 usb_set_device_state(udev, USB_STATE_DETACHED); 2048 2049 #if USB_HAVE_DEVCTL 2050 usb_notify_addq("DETACH", udev); 2051 #endif 2052 2053 #if USB_HAVE_UGEN 2054 printf("%s: <%s> at %s (disconnected)\n", udev->ugen_name, 2055 usb_get_manufacturer(udev), device_get_nameunit(bus->bdev)); 2056 2057 /* Destroy UGEN symlink, if any */ 2058 if (udev->ugen_symlink) { 2059 usb_free_symlink(udev->ugen_symlink); 2060 udev->ugen_symlink = NULL; 2061 } 2062 #endif 2063 /* 2064 * Unregister our device first which will prevent any further 2065 * references: 2066 */ 2067 usb_bus_port_set_device(bus, udev->parent_hub ? 2068 udev->parent_hub->hub->ports + udev->port_index : NULL, 2069 NULL, USB_ROOT_HUB_ADDR); 2070 2071 #if USB_HAVE_UGEN 2072 /* wait for all pending references to go away: */ 2073 mtx_lock(&usb_ref_lock); 2074 udev->refcount--; 2075 while (udev->refcount != 0) { 2076 cv_wait(&udev->ref_cv, &usb_ref_lock); 2077 } 2078 mtx_unlock(&usb_ref_lock); 2079 2080 usb_destroy_dev(udev->ctrl_dev); 2081 #endif 2082 2083 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 2084 /* stop receiving any control transfers (Device Side Mode) */ 2085 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX); 2086 } 2087 2088 /* the following will get the device unconfigured in software */ 2089 usb_unconfigure(udev, USB_UNCFG_FLAG_FREE_EP0); 2090 2091 /* unsetup any leftover default USB transfers */ 2092 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX); 2093 2094 /* template unsetup, if any */ 2095 (usb_temp_unsetup_p) (udev); 2096 2097 /* 2098 * Make sure that our clear-stall messages are not queued 2099 * anywhere: 2100 */ 2101 USB_BUS_LOCK(udev->bus); 2102 usb_proc_mwait(&udev->bus->non_giant_callback_proc, 2103 &udev->cs_msg[0], &udev->cs_msg[1]); 2104 USB_BUS_UNLOCK(udev->bus); 2105 2106 sx_destroy(&udev->ctrl_sx); 2107 sx_destroy(&udev->enum_sx); 2108 sx_destroy(&udev->sr_sx); 2109 2110 cv_destroy(&udev->ctrlreq_cv); 2111 cv_destroy(&udev->ref_cv); 2112 2113 mtx_destroy(&udev->device_mtx); 2114 #if USB_HAVE_UGEN 2115 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries")); 2116 #endif 2117 2118 /* Uninitialise device */ 2119 if (bus->methods->device_uninit != NULL) 2120 (bus->methods->device_uninit) (udev); 2121 2122 /* free device */ 2123 free(udev->serial, M_USB); 2124 free(udev->manufacturer, M_USB); 2125 free(udev->product, M_USB); 2126 free(udev, M_USB); 2127 } 2128 2129 /*------------------------------------------------------------------------* 2130 * usbd_get_iface 2131 * 2132 * This function is the safe way to get the USB interface structure 2133 * pointer by interface index. 2134 * 2135 * Return values: 2136 * NULL: Interface not present. 2137 * Else: Pointer to USB interface structure. 2138 *------------------------------------------------------------------------*/ 2139 struct usb_interface * 2140 usbd_get_iface(struct usb_device *udev, uint8_t iface_index) 2141 { 2142 struct usb_interface *iface = udev->ifaces + iface_index; 2143 2144 if (iface_index >= udev->ifaces_max) 2145 return (NULL); 2146 return (iface); 2147 } 2148 2149 /*------------------------------------------------------------------------* 2150 * usbd_find_descriptor 2151 * 2152 * This function will lookup the first descriptor that matches the 2153 * criteria given by the arguments "type" and "subtype". Descriptors 2154 * will only be searched within the interface having the index 2155 * "iface_index". If the "id" argument points to an USB descriptor, 2156 * it will be skipped before the search is started. This allows 2157 * searching for multiple descriptors using the same criteria. Else 2158 * the search is started after the interface descriptor. 2159 * 2160 * Return values: 2161 * NULL: End of descriptors 2162 * Else: A descriptor matching the criteria 2163 *------------------------------------------------------------------------*/ 2164 void * 2165 usbd_find_descriptor(struct usb_device *udev, void *id, uint8_t iface_index, 2166 uint8_t type, uint8_t type_mask, 2167 uint8_t subtype, uint8_t subtype_mask) 2168 { 2169 struct usb_descriptor *desc; 2170 struct usb_config_descriptor *cd; 2171 struct usb_interface *iface; 2172 2173 cd = usbd_get_config_descriptor(udev); 2174 if (cd == NULL) { 2175 return (NULL); 2176 } 2177 if (id == NULL) { 2178 iface = usbd_get_iface(udev, iface_index); 2179 if (iface == NULL) { 2180 return (NULL); 2181 } 2182 id = usbd_get_interface_descriptor(iface); 2183 if (id == NULL) { 2184 return (NULL); 2185 } 2186 } 2187 desc = (void *)id; 2188 2189 while ((desc = usb_desc_foreach(cd, desc))) { 2190 2191 if (desc->bDescriptorType == UDESC_INTERFACE) { 2192 break; 2193 } 2194 if (((desc->bDescriptorType & type_mask) == type) && 2195 ((desc->bDescriptorSubtype & subtype_mask) == subtype)) { 2196 return (desc); 2197 } 2198 } 2199 return (NULL); 2200 } 2201 2202 /*------------------------------------------------------------------------* 2203 * usb_devinfo 2204 * 2205 * This function will dump information from the device descriptor 2206 * belonging to the USB device pointed to by "udev", to the string 2207 * pointed to by "dst_ptr" having a maximum length of "dst_len" bytes 2208 * including the terminating zero. 2209 *------------------------------------------------------------------------*/ 2210 void 2211 usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len) 2212 { 2213 struct usb_device_descriptor *udd = &udev->ddesc; 2214 uint16_t bcdDevice; 2215 uint16_t bcdUSB; 2216 2217 bcdUSB = UGETW(udd->bcdUSB); 2218 bcdDevice = UGETW(udd->bcdDevice); 2219 2220 if (udd->bDeviceClass != 0xFF) { 2221 snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/" 2222 "%x.%02x, addr %d", 2223 usb_get_manufacturer(udev), 2224 usb_get_product(udev), 2225 udd->bDeviceClass, udd->bDeviceSubClass, 2226 (bcdUSB >> 8), bcdUSB & 0xFF, 2227 (bcdDevice >> 8), bcdDevice & 0xFF, 2228 udev->address); 2229 } else { 2230 snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/" 2231 "%x.%02x, addr %d", 2232 usb_get_manufacturer(udev), 2233 usb_get_product(udev), 2234 (bcdUSB >> 8), bcdUSB & 0xFF, 2235 (bcdDevice >> 8), bcdDevice & 0xFF, 2236 udev->address); 2237 } 2238 } 2239 2240 #ifdef USB_VERBOSE 2241 /* 2242 * Descriptions of of known vendors and devices ("products"). 2243 */ 2244 struct usb_knowndev { 2245 uint16_t vendor; 2246 uint16_t product; 2247 uint32_t flags; 2248 const char *vendorname; 2249 const char *productname; 2250 }; 2251 2252 #define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 2253 2254 #include "usbdevs.h" 2255 #include "usbdevs_data.h" 2256 #endif /* USB_VERBOSE */ 2257 2258 static void 2259 usbd_set_device_strings(struct usb_device *udev) 2260 { 2261 struct usb_device_descriptor *udd = &udev->ddesc; 2262 #ifdef USB_VERBOSE 2263 const struct usb_knowndev *kdp; 2264 #endif 2265 char *temp_ptr; 2266 size_t temp_size; 2267 uint16_t vendor_id; 2268 uint16_t product_id; 2269 2270 temp_ptr = (char *)udev->bus->scratch[0].data; 2271 temp_size = sizeof(udev->bus->scratch[0].data); 2272 2273 vendor_id = UGETW(udd->idVendor); 2274 product_id = UGETW(udd->idProduct); 2275 2276 /* get serial number string */ 2277 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2278 udev->ddesc.iSerialNumber); 2279 udev->serial = strdup(temp_ptr, M_USB); 2280 2281 /* get manufacturer string */ 2282 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2283 udev->ddesc.iManufacturer); 2284 usb_trim_spaces(temp_ptr); 2285 if (temp_ptr[0] != '\0') 2286 udev->manufacturer = strdup(temp_ptr, M_USB); 2287 2288 /* get product string */ 2289 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2290 udev->ddesc.iProduct); 2291 usb_trim_spaces(temp_ptr); 2292 if (temp_ptr[0] != '\0') 2293 udev->product = strdup(temp_ptr, M_USB); 2294 2295 #ifdef USB_VERBOSE 2296 if (udev->manufacturer == NULL || udev->product == NULL) { 2297 for (kdp = usb_knowndevs; kdp->vendorname != NULL; kdp++) { 2298 if (kdp->vendor == vendor_id && 2299 (kdp->product == product_id || 2300 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0)) 2301 break; 2302 } 2303 if (kdp->vendorname != NULL) { 2304 /* XXX should use pointer to knowndevs string */ 2305 if (udev->manufacturer == NULL) { 2306 udev->manufacturer = strdup(kdp->vendorname, 2307 M_USB); 2308 } 2309 if (udev->product == NULL && 2310 (kdp->flags & USB_KNOWNDEV_NOPROD) == 0) { 2311 udev->product = strdup(kdp->productname, 2312 M_USB); 2313 } 2314 } 2315 } 2316 #endif 2317 /* Provide default strings if none were found */ 2318 if (udev->manufacturer == NULL) { 2319 snprintf(temp_ptr, temp_size, "vendor 0x%04x", vendor_id); 2320 udev->manufacturer = strdup(temp_ptr, M_USB); 2321 } 2322 if (udev->product == NULL) { 2323 snprintf(temp_ptr, temp_size, "product 0x%04x", product_id); 2324 udev->product = strdup(temp_ptr, M_USB); 2325 } 2326 } 2327 2328 /* 2329 * Returns: 2330 * See: USB_MODE_XXX 2331 */ 2332 enum usb_hc_mode 2333 usbd_get_mode(struct usb_device *udev) 2334 { 2335 return (udev->flags.usb_mode); 2336 } 2337 2338 /* 2339 * Returns: 2340 * See: USB_SPEED_XXX 2341 */ 2342 enum usb_dev_speed 2343 usbd_get_speed(struct usb_device *udev) 2344 { 2345 return (udev->speed); 2346 } 2347 2348 uint32_t 2349 usbd_get_isoc_fps(struct usb_device *udev) 2350 { 2351 ; /* indent fix */ 2352 switch (udev->speed) { 2353 case USB_SPEED_LOW: 2354 case USB_SPEED_FULL: 2355 return (1000); 2356 default: 2357 return (8000); 2358 } 2359 } 2360 2361 struct usb_device_descriptor * 2362 usbd_get_device_descriptor(struct usb_device *udev) 2363 { 2364 if (udev == NULL) 2365 return (NULL); /* be NULL safe */ 2366 return (&udev->ddesc); 2367 } 2368 2369 struct usb_config_descriptor * 2370 usbd_get_config_descriptor(struct usb_device *udev) 2371 { 2372 if (udev == NULL) 2373 return (NULL); /* be NULL safe */ 2374 return (udev->cdesc); 2375 } 2376 2377 /*------------------------------------------------------------------------* 2378 * usb_test_quirk - test a device for a given quirk 2379 * 2380 * Return values: 2381 * 0: The USB device does not have the given quirk. 2382 * Else: The USB device has the given quirk. 2383 *------------------------------------------------------------------------*/ 2384 uint8_t 2385 usb_test_quirk(const struct usb_attach_arg *uaa, uint16_t quirk) 2386 { 2387 uint8_t found; 2388 uint8_t x; 2389 2390 if (quirk == UQ_NONE) 2391 return (0); 2392 2393 /* search the automatic per device quirks first */ 2394 2395 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) { 2396 if (uaa->device->autoQuirk[x] == quirk) 2397 return (1); 2398 } 2399 2400 /* search global quirk table, if any */ 2401 2402 found = (usb_test_quirk_p) (&uaa->info, quirk); 2403 2404 return (found); 2405 } 2406 2407 struct usb_interface_descriptor * 2408 usbd_get_interface_descriptor(struct usb_interface *iface) 2409 { 2410 if (iface == NULL) 2411 return (NULL); /* be NULL safe */ 2412 return (iface->idesc); 2413 } 2414 2415 uint8_t 2416 usbd_get_interface_altindex(struct usb_interface *iface) 2417 { 2418 return (iface->alt_index); 2419 } 2420 2421 uint8_t 2422 usbd_get_bus_index(struct usb_device *udev) 2423 { 2424 return ((uint8_t)device_get_unit(udev->bus->bdev)); 2425 } 2426 2427 uint8_t 2428 usbd_get_device_index(struct usb_device *udev) 2429 { 2430 return (udev->device_index); 2431 } 2432 2433 #if USB_HAVE_DEVCTL 2434 static void 2435 usb_notify_addq(const char *type, struct usb_device *udev) 2436 { 2437 struct usb_interface *iface; 2438 struct sbuf *sb; 2439 int i; 2440 2441 /* announce the device */ 2442 sb = sbuf_new_auto(); 2443 sbuf_printf(sb, 2444 #if USB_HAVE_UGEN 2445 "ugen=%s " 2446 "cdev=%s " 2447 #endif 2448 "vendor=0x%04x " 2449 "product=0x%04x " 2450 "devclass=0x%02x " 2451 "devsubclass=0x%02x " 2452 "sernum=\"%s\" " 2453 "release=0x%04x " 2454 "mode=%s " 2455 "port=%u " 2456 #if USB_HAVE_UGEN 2457 "parent=%s" 2458 #endif 2459 "", 2460 #if USB_HAVE_UGEN 2461 udev->ugen_name, 2462 udev->ugen_name, 2463 #endif 2464 UGETW(udev->ddesc.idVendor), 2465 UGETW(udev->ddesc.idProduct), 2466 udev->ddesc.bDeviceClass, 2467 udev->ddesc.bDeviceSubClass, 2468 usb_get_serial(udev), 2469 UGETW(udev->ddesc.bcdDevice), 2470 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", 2471 udev->port_no 2472 #if USB_HAVE_UGEN 2473 , udev->parent_hub != NULL ? 2474 udev->parent_hub->ugen_name : 2475 device_get_nameunit(device_get_parent(udev->bus->bdev)) 2476 #endif 2477 ); 2478 sbuf_finish(sb); 2479 devctl_notify("USB", "DEVICE", type, sbuf_data(sb)); 2480 sbuf_delete(sb); 2481 2482 /* announce each interface */ 2483 for (i = 0; i < USB_IFACE_MAX; i++) { 2484 iface = usbd_get_iface(udev, i); 2485 if (iface == NULL) 2486 break; /* end of interfaces */ 2487 if (iface->idesc == NULL) 2488 continue; /* no interface descriptor */ 2489 2490 sb = sbuf_new_auto(); 2491 sbuf_printf(sb, 2492 #if USB_HAVE_UGEN 2493 "ugen=%s " 2494 "cdev=%s " 2495 #endif 2496 "vendor=0x%04x " 2497 "product=0x%04x " 2498 "devclass=0x%02x " 2499 "devsubclass=0x%02x " 2500 "sernum=\"%s\" " 2501 "release=0x%04x " 2502 "mode=%s " 2503 "interface=%d " 2504 "endpoints=%d " 2505 "intclass=0x%02x " 2506 "intsubclass=0x%02x " 2507 "intprotocol=0x%02x", 2508 #if USB_HAVE_UGEN 2509 udev->ugen_name, 2510 udev->ugen_name, 2511 #endif 2512 UGETW(udev->ddesc.idVendor), 2513 UGETW(udev->ddesc.idProduct), 2514 udev->ddesc.bDeviceClass, 2515 udev->ddesc.bDeviceSubClass, 2516 usb_get_serial(udev), 2517 UGETW(udev->ddesc.bcdDevice), 2518 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", 2519 iface->idesc->bInterfaceNumber, 2520 iface->idesc->bNumEndpoints, 2521 iface->idesc->bInterfaceClass, 2522 iface->idesc->bInterfaceSubClass, 2523 iface->idesc->bInterfaceProtocol); 2524 sbuf_finish(sb); 2525 devctl_notify("USB", "INTERFACE", type, sbuf_data(sb)); 2526 sbuf_delete(sb); 2527 } 2528 } 2529 #endif 2530 2531 #if USB_HAVE_UGEN 2532 /*------------------------------------------------------------------------* 2533 * usb_fifo_free_wrap 2534 * 2535 * This function will free the FIFOs. 2536 * 2537 * Description of "flag" argument: If the USB_UNCFG_FLAG_FREE_EP0 flag 2538 * is set and "iface_index" is set to "USB_IFACE_INDEX_ANY", we free 2539 * all FIFOs. If the USB_UNCFG_FLAG_FREE_EP0 flag is not set and 2540 * "iface_index" is set to "USB_IFACE_INDEX_ANY", we free all non 2541 * control endpoint FIFOs. If "iface_index" is not set to 2542 * "USB_IFACE_INDEX_ANY" the flag has no effect. 2543 *------------------------------------------------------------------------*/ 2544 static void 2545 usb_fifo_free_wrap(struct usb_device *udev, 2546 uint8_t iface_index, uint8_t flag) 2547 { 2548 struct usb_fifo *f; 2549 uint16_t i; 2550 2551 /* 2552 * Free any USB FIFOs on the given interface: 2553 */ 2554 for (i = 0; i != USB_FIFO_MAX; i++) { 2555 f = udev->fifo[i]; 2556 if (f == NULL) { 2557 continue; 2558 } 2559 /* Check if the interface index matches */ 2560 if (iface_index == f->iface_index) { 2561 if (f->methods != &usb_ugen_methods) { 2562 /* 2563 * Don't free any non-generic FIFOs in 2564 * this case. 2565 */ 2566 continue; 2567 } 2568 if ((f->dev_ep_index == 0) && 2569 (f->fs_xfer == NULL)) { 2570 /* no need to free this FIFO */ 2571 continue; 2572 } 2573 } else if (iface_index == USB_IFACE_INDEX_ANY) { 2574 if ((f->methods == &usb_ugen_methods) && 2575 (f->dev_ep_index == 0) && 2576 (!(flag & USB_UNCFG_FLAG_FREE_EP0)) && 2577 (f->fs_xfer == NULL)) { 2578 /* no need to free this FIFO */ 2579 continue; 2580 } 2581 } else { 2582 /* no need to free this FIFO */ 2583 continue; 2584 } 2585 /* free this FIFO */ 2586 usb_fifo_free(f); 2587 } 2588 } 2589 #endif 2590 2591 /*------------------------------------------------------------------------* 2592 * usb_peer_can_wakeup 2593 * 2594 * Return values: 2595 * 0: Peer cannot do resume signalling. 2596 * Else: Peer can do resume signalling. 2597 *------------------------------------------------------------------------*/ 2598 uint8_t 2599 usb_peer_can_wakeup(struct usb_device *udev) 2600 { 2601 const struct usb_config_descriptor *cdp; 2602 2603 cdp = udev->cdesc; 2604 if ((cdp != NULL) && (udev->flags.usb_mode == USB_MODE_HOST)) { 2605 return (cdp->bmAttributes & UC_REMOTE_WAKEUP); 2606 } 2607 return (0); /* not supported */ 2608 } 2609 2610 void 2611 usb_set_device_state(struct usb_device *udev, enum usb_dev_state state) 2612 { 2613 2614 KASSERT(state < USB_STATE_MAX, ("invalid udev state")); 2615 2616 DPRINTF("udev %p state %s -> %s\n", udev, 2617 usb_statestr(udev->state), usb_statestr(state)); 2618 udev->state = state; 2619 2620 if (udev->bus->methods->device_state_change != NULL) 2621 (udev->bus->methods->device_state_change) (udev); 2622 } 2623 2624 enum usb_dev_state 2625 usb_get_device_state(struct usb_device *udev) 2626 { 2627 if (udev == NULL) 2628 return (USB_STATE_DETACHED); 2629 return (udev->state); 2630 } 2631 2632 uint8_t 2633 usbd_device_attached(struct usb_device *udev) 2634 { 2635 return (udev->state > USB_STATE_DETACHED); 2636 } 2637 2638 /* The following function locks enumerating the given USB device. */ 2639 2640 void 2641 usbd_enum_lock(struct usb_device *udev) 2642 { 2643 sx_xlock(&udev->enum_sx); 2644 sx_xlock(&udev->sr_sx); 2645 /* 2646 * NEWBUS LOCK NOTE: We should check if any parent SX locks 2647 * are locked before locking Giant. Else the lock can be 2648 * locked multiple times. 2649 */ 2650 mtx_lock(&Giant); 2651 } 2652 2653 /* The following function unlocks enumerating the given USB device. */ 2654 2655 void 2656 usbd_enum_unlock(struct usb_device *udev) 2657 { 2658 mtx_unlock(&Giant); 2659 sx_xunlock(&udev->enum_sx); 2660 sx_xunlock(&udev->sr_sx); 2661 } 2662 2663 /* The following function locks suspend and resume. */ 2664 2665 void 2666 usbd_sr_lock(struct usb_device *udev) 2667 { 2668 sx_xlock(&udev->sr_sx); 2669 /* 2670 * NEWBUS LOCK NOTE: We should check if any parent SX locks 2671 * are locked before locking Giant. Else the lock can be 2672 * locked multiple times. 2673 */ 2674 mtx_lock(&Giant); 2675 } 2676 2677 /* The following function unlocks suspend and resume. */ 2678 2679 void 2680 usbd_sr_unlock(struct usb_device *udev) 2681 { 2682 mtx_unlock(&Giant); 2683 sx_xunlock(&udev->sr_sx); 2684 } 2685 2686 /* 2687 * The following function checks the enumerating lock for the given 2688 * USB device. 2689 */ 2690 2691 uint8_t 2692 usbd_enum_is_locked(struct usb_device *udev) 2693 { 2694 return (sx_xlocked(&udev->enum_sx)); 2695 } 2696 2697 /* 2698 * The following function is used to set the per-interface specific 2699 * plug and play information. The string referred to by the pnpinfo 2700 * argument can safely be freed after calling this function. The 2701 * pnpinfo of an interface will be reset at device detach or when 2702 * passing a NULL argument to this function. This function 2703 * returns zero on success, else a USB_ERR_XXX failure code. 2704 */ 2705 2706 usb_error_t 2707 usbd_set_pnpinfo(struct usb_device *udev, uint8_t iface_index, const char *pnpinfo) 2708 { 2709 struct usb_interface *iface; 2710 2711 iface = usbd_get_iface(udev, iface_index); 2712 if (iface == NULL) 2713 return (USB_ERR_INVAL); 2714 2715 if (iface->pnpinfo != NULL) { 2716 free(iface->pnpinfo, M_USBDEV); 2717 iface->pnpinfo = NULL; 2718 } 2719 2720 if (pnpinfo == NULL || pnpinfo[0] == 0) 2721 return (0); /* success */ 2722 2723 iface->pnpinfo = strdup(pnpinfo, M_USBDEV); 2724 if (iface->pnpinfo == NULL) 2725 return (USB_ERR_NOMEM); 2726 2727 return (0); /* success */ 2728 } 2729 2730 usb_error_t 2731 usbd_add_dynamic_quirk(struct usb_device *udev, uint16_t quirk) 2732 { 2733 uint8_t x; 2734 2735 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) { 2736 if (udev->autoQuirk[x] == 0 || 2737 udev->autoQuirk[x] == quirk) { 2738 udev->autoQuirk[x] = quirk; 2739 return (0); /* success */ 2740 } 2741 } 2742 return (USB_ERR_NOMEM); 2743 } 2744