usb_subr.c revision 1.196.4.3
1 /* $NetBSD: usb_subr.c,v 1.196.4.3 2017/04/05 19:54:20 snj Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/usb_subr.c,v 1.18 1999/11/17 22:33:47 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart (at) augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: usb_subr.c,v 1.196.4.3 2017/04/05 19:54:20 snj Exp $"); 36 37 #ifdef _KERNEL_OPT 38 #include "opt_compat_netbsd.h" 39 #include "opt_usb.h" 40 #include "opt_usbverbose.h" 41 #endif 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/kmem.h> 47 #include <sys/device.h> 48 #include <sys/select.h> 49 #include <sys/proc.h> 50 51 #include <sys/bus.h> 52 #include <sys/module.h> 53 54 #include <dev/usb/usb.h> 55 56 #include <dev/usb/usbdi.h> 57 #include <dev/usb/usbdi_util.h> 58 #include <dev/usb/usbdivar.h> 59 #include <dev/usb/usbdevs.h> 60 #include <dev/usb/usb_quirks.h> 61 #include <dev/usb/usb_verbose.h> 62 #include <dev/usb/usbhist.h> 63 64 #include "locators.h" 65 66 #define DPRINTF(FMT,A,B,C,D) USBHIST_LOG(usbdebug,FMT,A,B,C,D) 67 #define DPRINTFN(N,FMT,A,B,C,D) USBHIST_LOGN(usbdebug,N,FMT,A,B,C,D) 68 69 Static usbd_status usbd_set_config(struct usbd_device *, int); 70 Static void usbd_devinfo(struct usbd_device *, int, char *, size_t); 71 Static void usbd_devinfo_vp(struct usbd_device *, char *, size_t, char *, size_t, 72 int, int); 73 Static int usbd_getnewaddr(struct usbd_bus *); 74 Static int usbd_print(void *, const char *); 75 Static int usbd_ifprint(void *, const char *); 76 Static void usbd_free_iface_data(struct usbd_device *, int); 77 78 uint32_t usb_cookie_no = 0; 79 80 Static const char * const usbd_error_strs[] = { 81 "NORMAL_COMPLETION", 82 "IN_PROGRESS", 83 "PENDING_REQUESTS", 84 "NOT_STARTED", 85 "INVAL", 86 "NOMEM", 87 "CANCELLED", 88 "BAD_ADDRESS", 89 "IN_USE", 90 "NO_ADDR", 91 "SET_ADDR_FAILED", 92 "NO_POWER", 93 "TOO_DEEP", 94 "IOERROR", 95 "NOT_CONFIGURED", 96 "TIMEOUT", 97 "SHORT_XFER", 98 "STALLED", 99 "INTERRUPTED", 100 "XXX", 101 }; 102 103 void usb_load_verbose(void); 104 105 void get_usb_vendor_stub(char *, size_t, usb_vendor_id_t); 106 void get_usb_product_stub(char *, size_t, usb_vendor_id_t, usb_product_id_t); 107 108 void (*get_usb_vendor)(char *, size_t, usb_vendor_id_t) = get_usb_vendor_stub; 109 void (*get_usb_product)(char *, size_t, usb_vendor_id_t, usb_product_id_t) = 110 get_usb_product_stub; 111 112 int usb_verbose_loaded = 0; 113 114 /* 115 * Load the usbverbose module 116 */ 117 void usb_load_verbose(void) 118 { 119 if (usb_verbose_loaded == 0) 120 module_autoload("usbverbose", MODULE_CLASS_MISC); 121 } 122 123 void get_usb_vendor_stub(char *v, size_t l, usb_vendor_id_t v_id) 124 { 125 usb_load_verbose(); 126 if (usb_verbose_loaded) 127 get_usb_vendor(v, l, v_id); 128 } 129 130 void get_usb_product_stub(char *p, size_t l, usb_vendor_id_t v_id, 131 usb_product_id_t p_id) 132 { 133 usb_load_verbose(); 134 if (usb_verbose_loaded) 135 get_usb_product(p, l, v_id, p_id); 136 } 137 138 const char * 139 usbd_errstr(usbd_status err) 140 { 141 static char buffer[5]; 142 143 if (err < USBD_ERROR_MAX) { 144 return usbd_error_strs[err]; 145 } else { 146 snprintf(buffer, sizeof(buffer), "%d", err); 147 return buffer; 148 } 149 } 150 151 usbd_status 152 usbd_get_string_desc(struct usbd_device *dev, int sindex, int langid, 153 usb_string_descriptor_t *sdesc, int *sizep) 154 { 155 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 156 usb_device_request_t req; 157 usbd_status err; 158 int actlen; 159 160 req.bmRequestType = UT_READ_DEVICE; 161 req.bRequest = UR_GET_DESCRIPTOR; 162 USETW2(req.wValue, UDESC_STRING, sindex); 163 USETW(req.wIndex, langid); 164 USETW(req.wLength, 2); /* only size byte first */ 165 err = usbd_do_request_flags(dev, &req, sdesc, USBD_SHORT_XFER_OK, 166 &actlen, USBD_DEFAULT_TIMEOUT); 167 if (err) 168 return err; 169 170 if (actlen < 2) 171 return USBD_SHORT_XFER; 172 173 USETW(req.wLength, sdesc->bLength); /* the whole string */ 174 err = usbd_do_request_flags(dev, &req, sdesc, USBD_SHORT_XFER_OK, 175 &actlen, USBD_DEFAULT_TIMEOUT); 176 if (err) 177 return err; 178 179 if (actlen != sdesc->bLength) { 180 DPRINTF("expected %d, got %d", sdesc->bLength, actlen, 0, 0); 181 } 182 183 *sizep = actlen; 184 return USBD_NORMAL_COMPLETION; 185 } 186 187 static void 188 usbd_trim_spaces(char *p) 189 { 190 char *q, *e; 191 192 q = e = p; 193 while (*q == ' ') /* skip leading spaces */ 194 q++; 195 while ((*p = *q++)) /* copy string */ 196 if (*p++ != ' ') /* remember last non-space */ 197 e = p; 198 *e = '\0'; /* kill trailing spaces */ 199 } 200 201 static void 202 usbd_get_device_string(struct usbd_device *ud, uByte index, char **buf) 203 { 204 char *b = kmem_alloc(USB_MAX_ENCODED_STRING_LEN, KM_SLEEP); 205 if (b) { 206 usbd_status err = usbd_get_string0(ud, index, b, true); 207 if (err != USBD_NORMAL_COMPLETION) { 208 kmem_free(b, USB_MAX_ENCODED_STRING_LEN); 209 b = NULL; 210 } else { 211 usbd_trim_spaces(b); 212 } 213 } 214 *buf = b; 215 } 216 217 void 218 usbd_get_device_strings(struct usbd_device *ud) 219 { 220 usb_device_descriptor_t *udd = &ud->ud_ddesc; 221 222 usbd_get_device_string(ud, udd->iManufacturer, &ud->ud_vendor); 223 usbd_get_device_string(ud, udd->iProduct, &ud->ud_product); 224 usbd_get_device_string(ud, udd->iSerialNumber, &ud->ud_serial); 225 } 226 227 228 Static void 229 usbd_devinfo_vp(struct usbd_device *dev, char *v, size_t vl, char *p, 230 size_t pl, int usedev, int useencoded) 231 { 232 usb_device_descriptor_t *udd = &dev->ud_ddesc; 233 if (dev == NULL) 234 return; 235 236 v[0] = p[0] = '\0'; 237 238 if (usedev) { 239 if (usbd_get_string0(dev, udd->iManufacturer, v, useencoded) == 240 USBD_NORMAL_COMPLETION) 241 usbd_trim_spaces(v); 242 if (usbd_get_string0(dev, udd->iProduct, p, useencoded) == 243 USBD_NORMAL_COMPLETION) 244 usbd_trim_spaces(p); 245 } else { 246 if (dev->ud_vendor) { 247 strlcpy(v, dev->ud_vendor, vl); 248 } 249 if (dev->ud_product) { 250 strlcpy(p, dev->ud_product, pl); 251 } 252 } 253 if (v[0] == '\0') 254 get_usb_vendor(v, vl, UGETW(udd->idVendor)); 255 if (p[0] == '\0') 256 get_usb_product(p, pl, UGETW(udd->idVendor), 257 UGETW(udd->idProduct)); 258 } 259 260 int 261 usbd_printBCD(char *cp, size_t l, int bcd) 262 { 263 return snprintf(cp, l, "%x.%02x", bcd >> 8, bcd & 0xff); 264 } 265 266 Static void 267 usbd_devinfo(struct usbd_device *dev, int showclass, char *cp, size_t l) 268 { 269 usb_device_descriptor_t *udd = &dev->ud_ddesc; 270 char *vendor, *product; 271 int bcdDevice, bcdUSB; 272 char *ep; 273 274 vendor = kmem_alloc(USB_MAX_ENCODED_STRING_LEN * 2, KM_SLEEP); 275 if (vendor == NULL) { 276 *cp = '\0'; 277 return; 278 } 279 product = &vendor[USB_MAX_ENCODED_STRING_LEN]; 280 281 ep = cp + l; 282 283 usbd_devinfo_vp(dev, vendor, USB_MAX_ENCODED_STRING_LEN, 284 product, USB_MAX_ENCODED_STRING_LEN, 0, 1); 285 cp += snprintf(cp, ep - cp, "%s %s", vendor, product); 286 if (showclass) 287 cp += snprintf(cp, ep - cp, ", class %d/%d", 288 udd->bDeviceClass, udd->bDeviceSubClass); 289 bcdUSB = UGETW(udd->bcdUSB); 290 bcdDevice = UGETW(udd->bcdDevice); 291 cp += snprintf(cp, ep - cp, ", rev "); 292 cp += usbd_printBCD(cp, ep - cp, bcdUSB); 293 *cp++ = '/'; 294 cp += usbd_printBCD(cp, ep - cp, bcdDevice); 295 cp += snprintf(cp, ep - cp, ", addr %d", dev->ud_addr); 296 *cp = 0; 297 kmem_free(vendor, USB_MAX_ENCODED_STRING_LEN * 2); 298 } 299 300 char * 301 usbd_devinfo_alloc(struct usbd_device *dev, int showclass) 302 { 303 char *devinfop; 304 305 devinfop = kmem_alloc(DEVINFOSIZE, KM_SLEEP); 306 usbd_devinfo(dev, showclass, devinfop, DEVINFOSIZE); 307 return devinfop; 308 } 309 310 void 311 usbd_devinfo_free(char *devinfop) 312 { 313 kmem_free(devinfop, DEVINFOSIZE); 314 } 315 316 /* Delay for a certain number of ms */ 317 void 318 usb_delay_ms_locked(struct usbd_bus *bus, u_int ms, kmutex_t *lock) 319 { 320 /* Wait at least two clock ticks so we know the time has passed. */ 321 if (bus->ub_usepolling || cold) 322 delay((ms+1) * 1000); 323 else 324 kpause("usbdly", false, (ms*hz+999)/1000 + 1, lock); 325 } 326 327 void 328 usb_delay_ms(struct usbd_bus *bus, u_int ms) 329 { 330 usb_delay_ms_locked(bus, ms, NULL); 331 } 332 333 /* Delay given a device handle. */ 334 void 335 usbd_delay_ms_locked(struct usbd_device *dev, u_int ms, kmutex_t *lock) 336 { 337 usb_delay_ms_locked(dev->ud_bus, ms, lock); 338 } 339 340 /* Delay given a device handle. */ 341 void 342 usbd_delay_ms(struct usbd_device *dev, u_int ms) 343 { 344 usb_delay_ms_locked(dev->ud_bus, ms, NULL); 345 } 346 347 usbd_status 348 usbd_reset_port(struct usbd_device *dev, int port, usb_port_status_t *ps) 349 { 350 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 351 usb_device_request_t req; 352 usbd_status err; 353 int n; 354 355 req.bmRequestType = UT_WRITE_CLASS_OTHER; 356 req.bRequest = UR_SET_FEATURE; 357 USETW(req.wValue, UHF_PORT_RESET); 358 USETW(req.wIndex, port); 359 USETW(req.wLength, 0); 360 err = usbd_do_request(dev, &req, 0); 361 DPRINTFN(1, "port %d reset done, error=%d", port, err, 0, 0); 362 if (err) 363 return err; 364 n = 10; 365 do { 366 /* Wait for device to recover from reset. */ 367 usbd_delay_ms(dev, USB_PORT_RESET_DELAY); 368 err = usbd_get_port_status(dev, port, ps); 369 if (err) { 370 DPRINTF("get status failed %d", err, 0, 0, 0); 371 return err; 372 } 373 /* If the device disappeared, just give up. */ 374 if (!(UGETW(ps->wPortStatus) & UPS_CURRENT_CONNECT_STATUS)) 375 return USBD_NORMAL_COMPLETION; 376 } while ((UGETW(ps->wPortChange) & UPS_C_PORT_RESET) == 0 && --n > 0); 377 if (n == 0) 378 return USBD_TIMEOUT; 379 err = usbd_clear_port_feature(dev, port, UHF_C_PORT_RESET); 380 #ifdef USB_DEBUG 381 if (err) 382 DPRINTF("clear port feature failed %d", err, 0, 0, 0); 383 #endif 384 385 /* Wait for the device to recover from reset. */ 386 usbd_delay_ms(dev, USB_PORT_RESET_RECOVERY); 387 return err; 388 } 389 390 usb_interface_descriptor_t * 391 usbd_find_idesc(usb_config_descriptor_t *cd, int ifaceidx, int altidx) 392 { 393 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 394 char *p = (char *)cd; 395 char *end = p + UGETW(cd->wTotalLength); 396 usb_interface_descriptor_t *d; 397 int curidx, lastidx, curaidx = 0; 398 399 for (curidx = lastidx = -1; p < end; ) { 400 d = (usb_interface_descriptor_t *)p; 401 DPRINTFN(4, "idx=%d(%d) altidx=%d(%d)", ifaceidx, curidx, 402 altidx, curaidx); 403 DPRINTFN(4, "len=%d type=%d", d->bLength, d->bDescriptorType, 404 0, 0); 405 if (d->bLength == 0) /* bad descriptor */ 406 break; 407 p += d->bLength; 408 if (p <= end && d->bDescriptorType == UDESC_INTERFACE) { 409 if (d->bInterfaceNumber != lastidx) { 410 lastidx = d->bInterfaceNumber; 411 curidx++; 412 curaidx = 0; 413 } else 414 curaidx++; 415 if (ifaceidx == curidx && altidx == curaidx) 416 return d; 417 } 418 } 419 return NULL; 420 } 421 422 usb_endpoint_descriptor_t * 423 usbd_find_edesc(usb_config_descriptor_t *cd, int ifaceidx, int altidx, 424 int endptidx) 425 { 426 char *p = (char *)cd; 427 char *end = p + UGETW(cd->wTotalLength); 428 usb_interface_descriptor_t *d; 429 usb_endpoint_descriptor_t *e; 430 int curidx; 431 432 d = usbd_find_idesc(cd, ifaceidx, altidx); 433 if (d == NULL) 434 return NULL; 435 if (endptidx >= d->bNumEndpoints) /* quick exit */ 436 return NULL; 437 438 curidx = -1; 439 for (p = (char *)d + d->bLength; p < end; ) { 440 e = (usb_endpoint_descriptor_t *)p; 441 if (e->bLength == 0) /* bad descriptor */ 442 break; 443 p += e->bLength; 444 if (p <= end && e->bDescriptorType == UDESC_INTERFACE) 445 return NULL; 446 if (p <= end && e->bDescriptorType == UDESC_ENDPOINT) { 447 curidx++; 448 if (curidx == endptidx) 449 return e; 450 } 451 } 452 return NULL; 453 } 454 455 usbd_status 456 usbd_fill_iface_data(struct usbd_device *dev, int ifaceidx, int altidx) 457 { 458 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 459 struct usbd_interface *ifc = &dev->ud_ifaces[ifaceidx]; 460 usb_interface_descriptor_t *idesc; 461 char *p, *end; 462 int endpt, nendpt; 463 464 DPRINTFN(4, "ifaceidx=%d altidx=%d", ifaceidx, altidx, 0, 0); 465 idesc = usbd_find_idesc(dev->ud_cdesc, ifaceidx, altidx); 466 if (idesc == NULL) 467 return USBD_INVAL; 468 ifc->ui_dev = dev; 469 ifc->ui_idesc = idesc; 470 ifc->ui_index = ifaceidx; 471 ifc->ui_altindex = altidx; 472 nendpt = ifc->ui_idesc->bNumEndpoints; 473 DPRINTFN(4, "found idesc nendpt=%d", nendpt, 0, 0, 0); 474 if (nendpt != 0) { 475 ifc->ui_endpoints = kmem_alloc(nendpt * sizeof(struct usbd_endpoint), 476 KM_SLEEP); 477 if (ifc->ui_endpoints == NULL) 478 return USBD_NOMEM; 479 } else 480 ifc->ui_endpoints = NULL; 481 ifc->ui_priv = NULL; 482 p = (char *)ifc->ui_idesc + ifc->ui_idesc->bLength; 483 end = (char *)dev->ud_cdesc + UGETW(dev->ud_cdesc->wTotalLength); 484 #define ed ((usb_endpoint_descriptor_t *)p) 485 for (endpt = 0; endpt < nendpt; endpt++) { 486 DPRINTFN(10, "endpt=%d", endpt, 0, 0, 0); 487 for (; p < end; p += ed->bLength) { 488 DPRINTFN(10, "p=%p end=%p len=%d type=%d", 489 p, end, ed->bLength, ed->bDescriptorType); 490 if (p + ed->bLength <= end && ed->bLength != 0 && 491 ed->bDescriptorType == UDESC_ENDPOINT) 492 goto found; 493 if (ed->bLength == 0 || 494 ed->bDescriptorType == UDESC_INTERFACE) 495 break; 496 } 497 /* passed end, or bad desc */ 498 printf("usbd_fill_iface_data: bad descriptor(s): %s\n", 499 ed->bLength == 0 ? "0 length" : 500 ed->bDescriptorType == UDESC_INTERFACE ? "iface desc": 501 "out of data"); 502 goto bad; 503 found: 504 ifc->ui_endpoints[endpt].ue_edesc = ed; 505 if (dev->ud_speed == USB_SPEED_HIGH) { 506 u_int mps; 507 /* Control and bulk endpoints have max packet limits. */ 508 switch (UE_GET_XFERTYPE(ed->bmAttributes)) { 509 case UE_CONTROL: 510 mps = USB_2_MAX_CTRL_PACKET; 511 goto check; 512 case UE_BULK: 513 mps = USB_2_MAX_BULK_PACKET; 514 check: 515 if (UGETW(ed->wMaxPacketSize) != mps) { 516 USETW(ed->wMaxPacketSize, mps); 517 #ifdef DIAGNOSTIC 518 printf("usbd_fill_iface_data: bad max " 519 "packet size\n"); 520 #endif 521 } 522 break; 523 default: 524 break; 525 } 526 } 527 ifc->ui_endpoints[endpt].ue_refcnt = 0; 528 ifc->ui_endpoints[endpt].ue_toggle = 0; 529 p += ed->bLength; 530 } 531 #undef ed 532 LIST_INIT(&ifc->ui_pipes); 533 return USBD_NORMAL_COMPLETION; 534 535 bad: 536 if (ifc->ui_endpoints != NULL) { 537 kmem_free(ifc->ui_endpoints, nendpt * sizeof(struct usbd_endpoint)); 538 ifc->ui_endpoints = NULL; 539 } 540 return USBD_INVAL; 541 } 542 543 void 544 usbd_free_iface_data(struct usbd_device *dev, int ifcno) 545 { 546 struct usbd_interface *ifc = &dev->ud_ifaces[ifcno]; 547 if (ifc->ui_endpoints) { 548 int nendpt = ifc->ui_idesc->bNumEndpoints; 549 size_t sz = nendpt * sizeof(struct usbd_endpoint); 550 kmem_free(ifc->ui_endpoints, sz); 551 } 552 } 553 554 Static usbd_status 555 usbd_set_config(struct usbd_device *dev, int conf) 556 { 557 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 558 usb_device_request_t req; 559 560 DPRINTFN(5, "dev %p conf %d", dev, conf, 0, 0); 561 562 req.bmRequestType = UT_WRITE_DEVICE; 563 req.bRequest = UR_SET_CONFIG; 564 USETW(req.wValue, conf); 565 USETW(req.wIndex, 0); 566 USETW(req.wLength, 0); 567 return usbd_do_request(dev, &req, 0); 568 } 569 570 usbd_status 571 usbd_set_config_no(struct usbd_device *dev, int no, int msg) 572 { 573 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 574 usb_config_descriptor_t cd; 575 usbd_status err; 576 int index; 577 578 if (no == USB_UNCONFIG_NO) 579 return usbd_set_config_index(dev, USB_UNCONFIG_INDEX, msg); 580 581 DPRINTFN(5, "%d", no, 0, 0, 0); 582 /* Figure out what config index to use. */ 583 for (index = 0; index < dev->ud_ddesc.bNumConfigurations; index++) { 584 err = usbd_get_config_desc(dev, index, &cd); 585 if (err) 586 return err; 587 if (cd.bConfigurationValue == no) 588 return usbd_set_config_index(dev, index, msg); 589 } 590 return USBD_INVAL; 591 } 592 593 usbd_status 594 usbd_set_config_index(struct usbd_device *dev, int index, int msg) 595 { 596 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 597 usb_config_descriptor_t cd, *cdp; 598 usb_bos_descriptor_t *bdp = NULL; 599 usbd_status err; 600 int i, ifcidx, nifc, len, selfpowered, power; 601 602 DPRINTFN(5, "dev=%p index=%d", dev, index, 0, 0); 603 604 if (index >= dev->ud_ddesc.bNumConfigurations && 605 index != USB_UNCONFIG_INDEX) { 606 /* panic? */ 607 printf("usbd_set_config_index: illegal index\n"); 608 return USBD_INVAL; 609 } 610 611 /* XXX check that all interfaces are idle */ 612 if (dev->ud_config != USB_UNCONFIG_NO) { 613 DPRINTF("free old config", 0, 0, 0, 0); 614 /* Free all configuration data structures. */ 615 nifc = dev->ud_cdesc->bNumInterface; 616 for (ifcidx = 0; ifcidx < nifc; ifcidx++) 617 usbd_free_iface_data(dev, ifcidx); 618 kmem_free(dev->ud_ifaces, nifc * sizeof(struct usbd_interface)); 619 kmem_free(dev->ud_cdesc, UGETW(dev->ud_cdesc->wTotalLength)); 620 if (dev->ud_bdesc != NULL) 621 kmem_free(dev->ud_bdesc, 622 UGETW(dev->ud_bdesc->wTotalLength)); 623 dev->ud_ifaces = NULL; 624 dev->ud_cdesc = NULL; 625 dev->ud_bdesc = NULL; 626 dev->ud_config = USB_UNCONFIG_NO; 627 } 628 629 if (index == USB_UNCONFIG_INDEX) { 630 /* We are unconfiguring the device, so leave unallocated. */ 631 DPRINTF("set config 0", 0, 0, 0, 0); 632 err = usbd_set_config(dev, USB_UNCONFIG_NO); 633 if (err) { 634 DPRINTF("setting config=0 failed, err = %d", err, 635 0, 0, 0); 636 } 637 return err; 638 } 639 640 /* Get the short descriptor. */ 641 err = usbd_get_config_desc(dev, index, &cd); 642 if (err) { 643 DPRINTF("get_config_desc=%d", err, 0, 0, 0); 644 return err; 645 } 646 len = UGETW(cd.wTotalLength); 647 cdp = kmem_alloc(len, KM_SLEEP); 648 if (cdp == NULL) 649 return USBD_NOMEM; 650 651 /* Get the full descriptor. Try a few times for slow devices. */ 652 for (i = 0; i < 3; i++) { 653 err = usbd_get_desc(dev, UDESC_CONFIG, index, len, cdp); 654 if (!err) 655 break; 656 usbd_delay_ms(dev, 200); 657 } 658 if (err) { 659 DPRINTF("get_desc=%d", err, 0, 0, 0); 660 goto bad; 661 } 662 if (cdp->bDescriptorType != UDESC_CONFIG) { 663 DPRINTF("bad desc %d", cdp->bDescriptorType, 0, 0, 0); 664 err = USBD_INVAL; 665 goto bad; 666 } 667 668 if (USB_IS_SS(dev->ud_speed)) { 669 usb_bos_descriptor_t bd; 670 671 /* get short bos desc */ 672 err = usbd_get_bos_desc(dev, index, &bd); 673 if (!err) { 674 int blen = UGETW(bd.wTotalLength); 675 bdp = kmem_alloc(blen, KM_SLEEP); 676 if (bdp == NULL) { 677 err = USBD_NOMEM; 678 goto bad; 679 } 680 681 /* Get the full desc */ 682 for (i = 0; i < 3; i++) { 683 err = usbd_get_desc(dev, UDESC_BOS, index, blen, 684 bdp); 685 if (!err) 686 break; 687 usbd_delay_ms(dev, 200); 688 } 689 if (err || bdp->bDescriptorType != UDESC_BOS) { 690 DPRINTF("error %d or bad desc %d", err, 691 bdp->bDescriptorType, 0, 0); 692 kmem_free(bdp, blen); 693 bdp = NULL; 694 } 695 } 696 } 697 dev->ud_bdesc = bdp; 698 699 /* 700 * Figure out if the device is self or bus powered. 701 */ 702 #if 0 /* XXX various devices don't report the power state correctly */ 703 selfpowered = 0; 704 err = usbd_get_device_status(dev, &ds); 705 if (!err && (UGETW(ds.wStatus) & UDS_SELF_POWERED)) 706 selfpowered = 1; 707 #endif 708 /* 709 * Use the power state in the configuration we are going 710 * to set. This doesn't necessarily reflect the actual 711 * power state of the device; the driver can control this 712 * by choosing the appropriate configuration. 713 */ 714 selfpowered = !!(cdp->bmAttributes & UC_SELF_POWERED); 715 716 DPRINTF("addr %d cno=%d attr=0x%02x, selfpowered=%d", 717 dev->ud_addr, cdp->bConfigurationValue, cdp->bmAttributes, 718 selfpowered); 719 DPRINTF("max power=%d", cdp->bMaxPower * 2, 0, 0, 0); 720 721 /* Check if we have enough power. */ 722 #if 0 /* this is a no-op, see above */ 723 if ((cdp->bmAttributes & UC_SELF_POWERED) && !selfpowered) { 724 if (msg) 725 printf("%s: device addr %d (config %d): " 726 "can't set self powered configuration\n", 727 device_xname(dev->ud_bus->bdev), dev->ud_addr, 728 cdp->bConfigurationValue); 729 err = USBD_NO_POWER; 730 goto bad; 731 } 732 #endif 733 #ifdef USB_DEBUG 734 if (dev->ud_powersrc == NULL) { 735 DPRINTF("No power source?", 0, 0, 0, 0); 736 err = USBD_IOERROR; 737 goto bad; 738 } 739 #endif 740 power = cdp->bMaxPower * 2; 741 if (power > dev->ud_powersrc->up_power) { 742 DPRINTF("power exceeded %d %d", power, dev->ud_powersrc->up_power, 743 0, 0); 744 /* XXX print nicer message. */ 745 if (msg) 746 printf("%s: device addr %d (config %d) exceeds power " 747 "budget, %d mA > %d mA\n", 748 device_xname(dev->ud_bus->ub_usbctl), dev->ud_addr, 749 cdp->bConfigurationValue, 750 power, dev->ud_powersrc->up_power); 751 err = USBD_NO_POWER; 752 goto bad; 753 } 754 dev->ud_power = power; 755 dev->ud_selfpowered = selfpowered; 756 757 /* Set the actual configuration value. */ 758 DPRINTF("set config %d", cdp->bConfigurationValue, 0, 0, 0); 759 err = usbd_set_config(dev, cdp->bConfigurationValue); 760 if (err) { 761 DPRINTF("setting config=%d failed, error=%d", 762 cdp->bConfigurationValue, err, 0, 0); 763 goto bad; 764 } 765 766 /* Allocate and fill interface data. */ 767 nifc = cdp->bNumInterface; 768 dev->ud_ifaces = kmem_alloc(nifc * sizeof(struct usbd_interface), 769 KM_SLEEP); 770 if (dev->ud_ifaces == NULL) { 771 err = USBD_NOMEM; 772 goto bad; 773 } 774 DPRINTFN(5, "dev=%p cdesc=%p", dev, cdp, 0, 0); 775 dev->ud_cdesc = cdp; 776 dev->ud_config = cdp->bConfigurationValue; 777 for (ifcidx = 0; ifcidx < nifc; ifcidx++) { 778 err = usbd_fill_iface_data(dev, ifcidx, 0); 779 if (err) { 780 while (--ifcidx >= 0) 781 usbd_free_iface_data(dev, ifcidx); 782 goto bad; 783 } 784 } 785 786 return USBD_NORMAL_COMPLETION; 787 788 bad: 789 kmem_free(cdp, len); 790 if (bdp != NULL) { 791 kmem_free(bdp, UGETW(bdp->wTotalLength)); 792 dev->ud_bdesc = NULL; 793 } 794 return err; 795 } 796 797 /* XXX add function for alternate settings */ 798 799 usbd_status 800 usbd_setup_pipe(struct usbd_device *dev, struct usbd_interface *iface, 801 struct usbd_endpoint *ep, int ival, struct usbd_pipe **pipe) 802 { 803 return usbd_setup_pipe_flags(dev, iface, ep, ival, pipe, 0); 804 } 805 806 usbd_status 807 usbd_setup_pipe_flags(struct usbd_device *dev, struct usbd_interface *iface, 808 struct usbd_endpoint *ep, int ival, struct usbd_pipe **pipe, uint8_t flags) 809 { 810 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 811 struct usbd_pipe *p; 812 usbd_status err; 813 814 p = kmem_alloc(dev->ud_bus->ub_pipesize, KM_SLEEP); 815 DPRINTFN(1, "dev=%p addr=%d iface=%p ep=%p pipe=%p", dev, dev->ud_addr, iface, ep); 816 if (p == NULL) { 817 DPRINTFN(1, "(nomem)", 0, 0, 0, 0); 818 return USBD_NOMEM; 819 } 820 p->up_dev = dev; 821 p->up_iface = iface; 822 p->up_endpoint = ep; 823 ep->ue_refcnt++; 824 p->up_intrxfer = NULL; 825 p->up_running = 0; 826 p->up_aborting = 0; 827 p->up_serialise = true; 828 p->up_repeat = 0; 829 p->up_interval = ival; 830 p->up_flags = flags; 831 p->up_serialise = true; 832 SIMPLEQ_INIT(&p->up_queue); 833 err = dev->ud_bus->ub_methods->ubm_open(p); 834 if (err) { 835 DPRINTF("endpoint=0x%x failed, error=%d", 836 ep->ue_edesc->bEndpointAddress, err, 0, 0); 837 kmem_free(p, dev->ud_bus->ub_pipesize); 838 return err; 839 } 840 841 KASSERT(p->up_methods->upm_start || p->up_serialise == false); 842 843 usb_init_task(&p->up_async_task, usbd_clear_endpoint_stall_task, p, 844 USB_TASKQ_MPSAFE); 845 DPRINTFN(1, "pipe=%p", p, 0, 0, 0); 846 *pipe = p; 847 return USBD_NORMAL_COMPLETION; 848 } 849 850 /* Abort the device control pipe. */ 851 void 852 usbd_kill_pipe(struct usbd_pipe *pipe) 853 { 854 usbd_abort_pipe(pipe); 855 usbd_lock_pipe(pipe); 856 pipe->up_methods->upm_close(pipe); 857 usbd_unlock_pipe(pipe); 858 usb_rem_task(pipe->up_dev, &pipe->up_async_task); 859 pipe->up_endpoint->ue_refcnt--; 860 kmem_free(pipe, pipe->up_dev->ud_bus->ub_pipesize); 861 } 862 863 int 864 usbd_getnewaddr(struct usbd_bus *bus) 865 { 866 int addr; 867 868 for (addr = 1; addr < USB_MAX_DEVICES; addr++) { 869 size_t dindex = usb_addr2dindex(addr); 870 if (bus->ub_devices[dindex] == NULL) 871 return addr; 872 } 873 return -1; 874 } 875 876 usbd_status 877 usbd_attach_roothub(device_t parent, struct usbd_device *dev) 878 { 879 struct usb_attach_arg uaa; 880 usb_device_descriptor_t *dd = &dev->ud_ddesc; 881 device_t dv; 882 883 uaa.uaa_device = dev; 884 uaa.uaa_usegeneric = 0; 885 uaa.uaa_port = 0; 886 uaa.uaa_vendor = UGETW(dd->idVendor); 887 uaa.uaa_product = UGETW(dd->idProduct); 888 uaa.uaa_release = UGETW(dd->bcdDevice); 889 uaa.uaa_class = dd->bDeviceClass; 890 uaa.uaa_subclass = dd->bDeviceSubClass; 891 uaa.uaa_proto = dd->bDeviceProtocol; 892 893 dv = config_found_ia(parent, "usbroothubif", &uaa, 0); 894 if (dv) { 895 dev->ud_subdevs = kmem_alloc(sizeof(dv), KM_SLEEP); 896 if (dev->ud_subdevs == NULL) 897 return USBD_NOMEM; 898 dev->ud_subdevs[0] = dv; 899 dev->ud_subdevlen = 1; 900 } 901 return USBD_NORMAL_COMPLETION; 902 } 903 904 static void 905 usbd_serialnumber(device_t dv, struct usbd_device *dev) 906 { 907 if (dev->ud_serial) { 908 prop_dictionary_set_cstring(device_properties(dv), 909 "serialnumber", dev->ud_serial); 910 } 911 } 912 913 static usbd_status 914 usbd_attachwholedevice(device_t parent, struct usbd_device *dev, int port, 915 int usegeneric) 916 { 917 struct usb_attach_arg uaa; 918 usb_device_descriptor_t *dd = &dev->ud_ddesc; 919 device_t dv; 920 int dlocs[USBDEVIFCF_NLOCS]; 921 922 uaa.uaa_device = dev; 923 uaa.uaa_usegeneric = usegeneric; 924 uaa.uaa_port = port; 925 uaa.uaa_vendor = UGETW(dd->idVendor); 926 uaa.uaa_product = UGETW(dd->idProduct); 927 uaa.uaa_release = UGETW(dd->bcdDevice); 928 uaa.uaa_class = dd->bDeviceClass; 929 uaa.uaa_subclass = dd->bDeviceSubClass; 930 uaa.uaa_proto = dd->bDeviceProtocol; 931 932 dlocs[USBDEVIFCF_PORT] = uaa.uaa_port; 933 dlocs[USBDEVIFCF_VENDOR] = uaa.uaa_vendor; 934 dlocs[USBDEVIFCF_PRODUCT] = uaa.uaa_product; 935 dlocs[USBDEVIFCF_RELEASE] = uaa.uaa_release; 936 /* the rest is historical ballast */ 937 dlocs[USBDEVIFCF_CONFIGURATION] = -1; 938 dlocs[USBDEVIFCF_INTERFACE] = -1; 939 940 KERNEL_LOCK(1, NULL); 941 dv = config_found_sm_loc(parent, "usbdevif", dlocs, &uaa, usbd_print, 942 config_stdsubmatch); 943 KERNEL_UNLOCK_ONE(NULL); 944 if (dv) { 945 dev->ud_subdevs = kmem_alloc(sizeof(dv), KM_SLEEP); 946 if (dev->ud_subdevs == NULL) 947 return USBD_NOMEM; 948 dev->ud_subdevs[0] = dv; 949 dev->ud_subdevlen = 1; 950 dev->ud_nifaces_claimed = 1; /* XXX */ 951 usbd_serialnumber(dv, dev); 952 } 953 return USBD_NORMAL_COMPLETION; 954 } 955 956 static usbd_status 957 usbd_attachinterfaces(device_t parent, struct usbd_device *dev, 958 int port, const int *locators) 959 { 960 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 961 struct usbif_attach_arg uiaa; 962 int ilocs[USBIFIFCF_NLOCS]; 963 usb_device_descriptor_t *dd = &dev->ud_ddesc; 964 int nifaces; 965 struct usbd_interface **ifaces; 966 int i, j, loc; 967 device_t dv; 968 969 nifaces = dev->ud_cdesc->bNumInterface; 970 ifaces = kmem_zalloc(nifaces * sizeof(*ifaces), KM_SLEEP); 971 if (!ifaces) 972 return USBD_NOMEM; 973 for (i = 0; i < nifaces; i++) { 974 if (!dev->ud_subdevs[i]) { 975 ifaces[i] = &dev->ud_ifaces[i]; 976 } 977 DPRINTF("interface %d %p", i, ifaces[i], 0, 0); 978 } 979 980 981 uiaa.uiaa_device = dev; 982 uiaa.uiaa_port = port; 983 uiaa.uiaa_vendor = UGETW(dd->idVendor); 984 uiaa.uiaa_product = UGETW(dd->idProduct); 985 uiaa.uiaa_release = UGETW(dd->bcdDevice); 986 uiaa.uiaa_configno = dev->ud_cdesc->bConfigurationValue; 987 uiaa.uiaa_ifaces = ifaces; 988 uiaa.uiaa_nifaces = nifaces; 989 ilocs[USBIFIFCF_PORT] = uiaa.uiaa_port; 990 ilocs[USBIFIFCF_VENDOR] = uiaa.uiaa_vendor; 991 ilocs[USBIFIFCF_PRODUCT] = uiaa.uiaa_product; 992 ilocs[USBIFIFCF_RELEASE] = uiaa.uiaa_release; 993 ilocs[USBIFIFCF_CONFIGURATION] = uiaa.uiaa_configno; 994 995 for (i = 0; i < nifaces; i++) { 996 if (!ifaces[i]) { 997 DPRINTF("interface %d claimed", i, 0, 0, 0); 998 continue; /* interface already claimed */ 999 } 1000 uiaa.uiaa_iface = ifaces[i]; 1001 uiaa.uiaa_class = ifaces[i]->ui_idesc->bInterfaceClass; 1002 uiaa.uiaa_subclass = ifaces[i]->ui_idesc->bInterfaceSubClass; 1003 uiaa.uiaa_proto = ifaces[i]->ui_idesc->bInterfaceProtocol; 1004 uiaa.uiaa_ifaceno = ifaces[i]->ui_idesc->bInterfaceNumber; 1005 1006 DPRINTF("searching for interface %d...", i, 0, 0, 0); 1007 DPRINTF("class %x subclass %x proto %x ifaceno %d", 1008 uiaa.uiaa_class, uiaa.uiaa_subclass, uiaa.uiaa_proto, 1009 uiaa.uiaa_ifaceno); 1010 ilocs[USBIFIFCF_INTERFACE] = uiaa.uiaa_ifaceno; 1011 if (locators != NULL) { 1012 loc = locators[USBIFIFCF_CONFIGURATION]; 1013 if (loc != USBIFIFCF_CONFIGURATION_DEFAULT && 1014 loc != uiaa.uiaa_configno) 1015 continue; 1016 loc = locators[USBIFIFCF_INTERFACE]; 1017 if (loc != USBIFIFCF_INTERFACE_DEFAULT && 1018 loc != uiaa.uiaa_ifaceno) 1019 continue; 1020 } 1021 KERNEL_LOCK(1, NULL); 1022 dv = config_found_sm_loc(parent, "usbifif", ilocs, &uiaa, 1023 usbd_ifprint, config_stdsubmatch); 1024 KERNEL_UNLOCK_ONE(NULL); 1025 if (!dv) 1026 continue; 1027 1028 usbd_serialnumber(dv, dev); 1029 1030 /* claim */ 1031 ifaces[i] = NULL; 1032 /* account for ifaces claimed by the driver behind our back */ 1033 for (j = 0; j < nifaces; j++) { 1034 1035 if (!ifaces[j] && !dev->ud_subdevs[j]) { 1036 DPRINTF("interface %d claimed behind our back", 1037 j, 0, 0, 0); 1038 dev->ud_subdevs[j] = dv; 1039 dev->ud_nifaces_claimed++; 1040 } 1041 } 1042 } 1043 1044 kmem_free(ifaces, nifaces * sizeof(*ifaces)); 1045 return USBD_NORMAL_COMPLETION; 1046 } 1047 1048 usbd_status 1049 usbd_probe_and_attach(device_t parent, struct usbd_device *dev, 1050 int port, int addr) 1051 { 1052 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1053 usb_device_descriptor_t *dd = &dev->ud_ddesc; 1054 int confi, nifaces; 1055 usbd_status err; 1056 1057 /* First try with device specific drivers. */ 1058 DPRINTF("trying device specific drivers", 0, 0, 0, 0); 1059 err = usbd_attachwholedevice(parent, dev, port, 0); 1060 if (dev->ud_nifaces_claimed || err) 1061 return err; 1062 DPRINTF("no device specific driver found", 0, 0, 0, 0); 1063 1064 DPRINTF("looping over %d configurations", dd->bNumConfigurations, 1065 0, 0, 0); 1066 for (confi = 0; confi < dd->bNumConfigurations; confi++) { 1067 DPRINTFN(1, "trying config idx=%d", confi, 0, 0, 0); 1068 err = usbd_set_config_index(dev, confi, 1); 1069 if (err) { 1070 DPRINTF("port %d, set config at addr %d failed, " 1071 "error=%d", port, addr, err, 0); 1072 printf("%s: port %d, set config at addr %d failed\n", 1073 device_xname(parent), port, addr); 1074 return err; 1075 } 1076 nifaces = dev->ud_cdesc->bNumInterface; 1077 dev->ud_subdevs = kmem_zalloc(nifaces * sizeof(device_t), 1078 KM_SLEEP); 1079 if (dev->ud_subdevs == NULL) 1080 return USBD_NOMEM; 1081 dev->ud_subdevlen = nifaces; 1082 1083 err = usbd_attachinterfaces(parent, dev, port, NULL); 1084 1085 if (!dev->ud_nifaces_claimed) { 1086 kmem_free(dev->ud_subdevs, 1087 dev->ud_subdevlen * sizeof(device_t)); 1088 dev->ud_subdevs = 0; 1089 dev->ud_subdevlen = 0; 1090 } 1091 if (dev->ud_nifaces_claimed || err) 1092 return err; 1093 } 1094 /* No interfaces were attached in any of the configurations. */ 1095 1096 if (dd->bNumConfigurations > 1) /* don't change if only 1 config */ 1097 usbd_set_config_index(dev, 0, 0); 1098 1099 DPRINTF("no interface drivers found", 0, 0, 0, 0); 1100 1101 /* Finally try the generic driver. */ 1102 err = usbd_attachwholedevice(parent, dev, port, 1); 1103 1104 /* 1105 * The generic attach failed, but leave the device as it is. 1106 * We just did not find any drivers, that's all. The device is 1107 * fully operational and not harming anyone. 1108 */ 1109 DPRINTF("generic attach failed", 0, 0, 0, 0); 1110 1111 return USBD_NORMAL_COMPLETION; 1112 } 1113 1114 /** 1115 * Called from uhub_rescan(). usbd_new_device() for the target dev must be 1116 * called before calling this. 1117 */ 1118 usbd_status 1119 usbd_reattach_device(device_t parent, struct usbd_device *dev, 1120 int port, const int *locators) 1121 { 1122 int i, loc; 1123 1124 if (locators != NULL) { 1125 loc = locators[USBIFIFCF_PORT]; 1126 if (loc != USBIFIFCF_PORT_DEFAULT && loc != port) 1127 return USBD_NORMAL_COMPLETION; 1128 loc = locators[USBIFIFCF_VENDOR]; 1129 if (loc != USBIFIFCF_VENDOR_DEFAULT && 1130 loc != UGETW(dev->ud_ddesc.idVendor)) 1131 return USBD_NORMAL_COMPLETION; 1132 loc = locators[USBIFIFCF_PRODUCT]; 1133 if (loc != USBIFIFCF_PRODUCT_DEFAULT && 1134 loc != UGETW(dev->ud_ddesc.idProduct)) 1135 return USBD_NORMAL_COMPLETION; 1136 loc = locators[USBIFIFCF_RELEASE]; 1137 if (loc != USBIFIFCF_RELEASE_DEFAULT && 1138 loc != UGETW(dev->ud_ddesc.bcdDevice)) 1139 return USBD_NORMAL_COMPLETION; 1140 } 1141 if (dev->ud_subdevlen == 0) { 1142 /* XXX: check USBIFIFCF_CONFIGURATION and 1143 * USBIFIFCF_INTERFACE too */ 1144 return usbd_probe_and_attach(parent, dev, port, dev->ud_addr); 1145 } else if (dev->ud_subdevlen != dev->ud_cdesc->bNumInterface) { 1146 /* device-specific or generic driver is already attached. */ 1147 return USBD_NORMAL_COMPLETION; 1148 } 1149 /* Does the device have unconfigured interfaces? */ 1150 for (i = 0; i < dev->ud_subdevlen; i++) { 1151 if (dev->ud_subdevs[i] == NULL) { 1152 break; 1153 } 1154 } 1155 if (i >= dev->ud_subdevlen) 1156 return USBD_NORMAL_COMPLETION; 1157 return usbd_attachinterfaces(parent, dev, port, locators); 1158 } 1159 1160 /* 1161 * Get the first 8 bytes of the device descriptor. 1162 * Do as Windows does: try to read 64 bytes -- there are devices which 1163 * recognize the initial descriptor fetch (before the control endpoint's 1164 * MaxPacketSize is known by the host) by exactly this length. 1165 */ 1166 usbd_status 1167 usbd_get_initial_ddesc(struct usbd_device *dev, usb_device_descriptor_t *desc) 1168 { 1169 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1170 usb_device_request_t req; 1171 char buf[64]; 1172 int res, actlen; 1173 1174 DPRINTFN(5, "dev %p", dev, 0, 0, 0); 1175 1176 req.bmRequestType = UT_READ_DEVICE; 1177 req.bRequest = UR_GET_DESCRIPTOR; 1178 USETW2(req.wValue, UDESC_DEVICE, 0); 1179 USETW(req.wIndex, 0); 1180 USETW(req.wLength, 64); 1181 res = usbd_do_request_flags(dev, &req, buf, USBD_SHORT_XFER_OK, 1182 &actlen, USBD_DEFAULT_TIMEOUT); 1183 if (res) 1184 return res; 1185 if (actlen < 8) 1186 return USBD_SHORT_XFER; 1187 memcpy(desc, buf, 8); 1188 return USBD_NORMAL_COMPLETION; 1189 } 1190 1191 /* 1192 * Called when a new device has been put in the powered state, 1193 * but not yet in the addressed state. 1194 * Get initial descriptor, set the address, get full descriptor, 1195 * and attach a driver. 1196 */ 1197 usbd_status 1198 usbd_new_device(device_t parent, struct usbd_bus *bus, int depth, int speed, 1199 int port, struct usbd_port *up) 1200 { 1201 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1202 struct usbd_device *dev, *adev; 1203 struct usbd_device *hub; 1204 usb_device_descriptor_t *dd; 1205 usb_port_status_t ps; 1206 usbd_status err; 1207 int addr; 1208 int i; 1209 int p; 1210 1211 DPRINTF("bus=%p port=%d depth=%d speed=%d", bus, port, depth, speed); 1212 1213 if (bus->ub_methods->ubm_newdev != NULL) 1214 return (bus->ub_methods->ubm_newdev)(parent, bus, depth, speed, 1215 port, up); 1216 1217 addr = usbd_getnewaddr(bus); 1218 if (addr < 0) { 1219 printf("%s: No free USB addresses, new device ignored.\n", 1220 device_xname(bus->ub_usbctl)); 1221 return USBD_NO_ADDR; 1222 } 1223 1224 dev = kmem_zalloc(sizeof(*dev), KM_SLEEP); 1225 if (dev == NULL) 1226 return USBD_NOMEM; 1227 1228 dev->ud_bus = bus; 1229 1230 /* Set up default endpoint handle. */ 1231 dev->ud_ep0.ue_edesc = &dev->ud_ep0desc; 1232 1233 /* Set up default endpoint descriptor. */ 1234 dev->ud_ep0desc.bLength = USB_ENDPOINT_DESCRIPTOR_SIZE; 1235 dev->ud_ep0desc.bDescriptorType = UDESC_ENDPOINT; 1236 dev->ud_ep0desc.bEndpointAddress = USB_CONTROL_ENDPOINT; 1237 dev->ud_ep0desc.bmAttributes = UE_CONTROL; 1238 /* 1239 * temporary, will be fixed after first descriptor fetch 1240 * (which uses 64 bytes so it shouldn't be less), 1241 * highspeed devices must support 64 byte packets anyway 1242 */ 1243 if (speed == USB_SPEED_HIGH || speed == USB_SPEED_FULL) 1244 USETW(dev->ud_ep0desc.wMaxPacketSize, 64); 1245 else 1246 USETW(dev->ud_ep0desc.wMaxPacketSize, USB_MAX_IPACKET); 1247 1248 dev->ud_ep0desc.bInterval = 0; 1249 1250 /* doesn't matter, just don't leave it uninitialized */ 1251 dev->ud_ep0.ue_toggle = 0; 1252 1253 dev->ud_quirks = &usbd_no_quirk; 1254 dev->ud_addr = USB_START_ADDR; 1255 dev->ud_ddesc.bMaxPacketSize = 0; 1256 dev->ud_depth = depth; 1257 dev->ud_powersrc = up; 1258 dev->ud_myhub = up->up_parent; 1259 1260 up->up_dev = dev; 1261 1262 /* Locate port on upstream high speed hub */ 1263 for (adev = dev, hub = up->up_parent; 1264 hub != NULL && hub->ud_speed != USB_SPEED_HIGH; 1265 adev = hub, hub = hub->ud_myhub) 1266 ; 1267 if (hub) { 1268 for (p = 0; p < hub->ud_hub->uh_hubdesc.bNbrPorts; p++) { 1269 if (hub->ud_hub->uh_ports[p].up_dev == adev) { 1270 dev->ud_myhsport = &hub->ud_hub->uh_ports[p]; 1271 goto found; 1272 } 1273 } 1274 panic("usbd_new_device: cannot find HS port"); 1275 found: 1276 DPRINTFN(1, "high speed port %d", p, 0, 0, 0); 1277 } else { 1278 dev->ud_myhsport = NULL; 1279 } 1280 dev->ud_speed = speed; 1281 dev->ud_langid = USBD_NOLANG; 1282 dev->ud_cookie.cookie = ++usb_cookie_no; 1283 1284 /* Establish the default pipe. */ 1285 err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL, 1286 &dev->ud_pipe0, USBD_MPSAFE); 1287 if (err) { 1288 usbd_remove_device(dev, up); 1289 return err; 1290 } 1291 1292 dd = &dev->ud_ddesc; 1293 /* Try a few times in case the device is slow (i.e. outside specs.) */ 1294 for (i = 0; i < 10; i++) { 1295 /* Get the first 8 bytes of the device descriptor. */ 1296 err = usbd_get_initial_ddesc(dev, dd); 1297 if (!err) 1298 break; 1299 /* 1300 * The root hub can never fail to give the initial descriptor, 1301 * but assert it just in case. 1302 */ 1303 KASSERT(up->up_parent); 1304 usbd_delay_ms(dev, 200); 1305 if ((i & 3) == 3) 1306 usbd_reset_port(up->up_parent, port, &ps); 1307 } 1308 if (err) { 1309 DPRINTF("addr=%d, getting first desc failed: %d", addr, err, 1310 0, 0); 1311 usbd_remove_device(dev, up); 1312 return err; 1313 } 1314 1315 /* Windows resets the port here, do likewise */ 1316 if (up->up_parent) 1317 usbd_reset_port(up->up_parent, port, &ps); 1318 1319 if (speed == USB_SPEED_HIGH) { 1320 /* Max packet size must be 64 (sec 5.5.3). */ 1321 if (dd->bMaxPacketSize != USB_2_MAX_CTRL_PACKET) { 1322 #ifdef DIAGNOSTIC 1323 printf("usbd_new_device: addr=%d bad max packet " 1324 "size=%d. adjusting to %d.\n", 1325 addr, dd->bMaxPacketSize, USB_2_MAX_CTRL_PACKET); 1326 #endif 1327 dd->bMaxPacketSize = USB_2_MAX_CTRL_PACKET; 1328 } 1329 } 1330 1331 DPRINTF("adding unit addr=%d, rev=%02x, class=%d, subclass=%d", addr, 1332 UGETW(dd->bcdUSB), dd->bDeviceClass, dd->bDeviceSubClass); 1333 DPRINTF("protocol=%d, maxpacket=%d, len=%d, speed=%d", 1334 dd->bDeviceProtocol, dd->bMaxPacketSize, dd->bLength, dev->ud_speed); 1335 1336 if (dd->bDescriptorType != UDESC_DEVICE) { 1337 /* Illegal device descriptor */ 1338 DPRINTF("illegal descriptor %d", dd->bDescriptorType, 0, 0, 0); 1339 usbd_remove_device(dev, up); 1340 return USBD_INVAL; 1341 } 1342 1343 if (dd->bLength < USB_DEVICE_DESCRIPTOR_SIZE) { 1344 DPRINTF("bad length %d", dd->bLength, 0, 0, 0); 1345 usbd_remove_device(dev, up); 1346 return USBD_INVAL; 1347 } 1348 1349 USETW(dev->ud_ep0desc.wMaxPacketSize, dd->bMaxPacketSize); 1350 1351 /* Re-establish the default pipe with the new MPS. */ 1352 usbd_kill_pipe(dev->ud_pipe0); 1353 err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL, 1354 &dev->ud_pipe0, USBD_MPSAFE); 1355 if (err) { 1356 DPRINTF("setup default pipe failed err %d", err, 0, 0, 0); 1357 usbd_remove_device(dev, up); 1358 return err; 1359 } 1360 1361 /* Set the address */ 1362 DPRINTFN(5, "setting device address=%d", addr, 0, 0, 0); 1363 err = usbd_set_address(dev, addr); 1364 if (err) { 1365 DPRINTF("set address %d failed, err = %d", addr, err, 0, 0); 1366 err = USBD_SET_ADDR_FAILED; 1367 usbd_remove_device(dev, up); 1368 return err; 1369 } 1370 1371 /* Allow device time to set new address */ 1372 usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE); 1373 dev->ud_addr = addr; /* new device address now */ 1374 bus->ub_devices[usb_addr2dindex(addr)] = dev; 1375 1376 /* Re-establish the default pipe with the new address. */ 1377 usbd_kill_pipe(dev->ud_pipe0); 1378 err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL, 1379 &dev->ud_pipe0, USBD_MPSAFE); 1380 if (err) { 1381 DPRINTF("setup default pipe failed, err = %d", err, 0, 0, 0); 1382 usbd_remove_device(dev, up); 1383 return err; 1384 } 1385 1386 err = usbd_reload_device_desc(dev); 1387 if (err) { 1388 DPRINTF("addr=%d, getting full desc failed, err = %d", addr, 1389 err, 0, 0); 1390 usbd_remove_device(dev, up); 1391 return err; 1392 } 1393 1394 /* Assume 100mA bus powered for now. Changed when configured. */ 1395 dev->ud_power = USB_MIN_POWER; 1396 dev->ud_selfpowered = 0; 1397 1398 DPRINTF("new dev (addr %d), dev=%p, parent=%p", addr, dev, parent, 0); 1399 1400 usbd_get_device_strings(dev); 1401 1402 usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev); 1403 1404 if (port == 0) { /* root hub */ 1405 KASSERT(addr == 1); 1406 usbd_attach_roothub(parent, dev); 1407 return USBD_NORMAL_COMPLETION; 1408 } 1409 1410 err = usbd_probe_and_attach(parent, dev, port, addr); 1411 if (err) { 1412 usbd_remove_device(dev, up); 1413 return err; 1414 } 1415 1416 return USBD_NORMAL_COMPLETION; 1417 } 1418 1419 usbd_status 1420 usbd_reload_device_desc(struct usbd_device *dev) 1421 { 1422 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1423 usb_device_descriptor_t *udd = &dev->ud_ddesc; 1424 usbd_status err; 1425 1426 /* Get the full device descriptor. */ 1427 err = usbd_get_device_desc(dev, udd); 1428 if (err) 1429 return err; 1430 1431 DPRINTFN(15, "bLength %5u", udd->bLength, 0, 0, 0); 1432 DPRINTFN(15, "bDescriptorType %5u", udd->bDescriptorType, 0, 0, 0); 1433 DPRINTFN(15, "bcdUSB %2x.%02x", udd->bcdUSB[1], 1434 udd->bcdUSB[0], 0, 0); 1435 DPRINTFN(15, "bDeviceClass %5u", udd->bDeviceClass, 0, 0, 0); 1436 DPRINTFN(15, "bDeviceSubClass %5u", udd->bDeviceSubClass, 0, 0, 0); 1437 DPRINTFN(15, "bDeviceProtocol %5u", udd->bDeviceProtocol, 0, 0, 0); 1438 DPRINTFN(15, "bMaxPacketSize0 %5u", udd->bMaxPacketSize, 0, 0, 0); 1439 DPRINTFN(15, "idVendor 0x%04x", udd->idVendor, 0, 0, 0); 1440 DPRINTFN(15, "idProduct 0x%04x", udd->idProduct, 0, 0, 0); 1441 DPRINTFN(15, "bcdDevice %2x.%02x", udd->bcdDevice[1], 1442 udd->bcdDevice[0], 0, 0); 1443 DPRINTFN(15, "iManufacturer %5u", udd->iManufacturer, 0, 0, 0); 1444 DPRINTFN(15, "iProduct %5u", udd->iProduct, 0, 0, 0); 1445 DPRINTFN(15, "iSerial %5u", udd->iSerialNumber, 0, 0, 0); 1446 DPRINTFN(15, "bNumConfigurations %5u", udd->bNumConfigurations, 0, 0, 1447 0); 1448 1449 /* Figure out what's wrong with this device. */ 1450 dev->ud_quirks = usbd_find_quirk(udd); 1451 1452 return USBD_NORMAL_COMPLETION; 1453 } 1454 1455 void 1456 usbd_remove_device(struct usbd_device *dev, struct usbd_port *up) 1457 { 1458 1459 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1460 1461 DPRINTF("dev %p up %p", dev, up, 0, 0); 1462 1463 if (dev->ud_pipe0 != NULL) 1464 usbd_kill_pipe(dev->ud_pipe0); 1465 up->up_dev = NULL; 1466 dev->ud_bus->ub_devices[usb_addr2dindex(dev->ud_addr)] = NULL; 1467 1468 kmem_free(dev, sizeof(*dev)); 1469 } 1470 1471 int 1472 usbd_print(void *aux, const char *pnp) 1473 { 1474 struct usb_attach_arg *uaa = aux; 1475 1476 if (pnp) { 1477 #define USB_DEVINFO 1024 1478 char *devinfo; 1479 if (!uaa->uaa_usegeneric) 1480 return QUIET; 1481 devinfo = kmem_alloc(USB_DEVINFO, KM_SLEEP); 1482 usbd_devinfo(uaa->uaa_device, 1, devinfo, USB_DEVINFO); 1483 aprint_normal("%s, %s", devinfo, pnp); 1484 kmem_free(devinfo, USB_DEVINFO); 1485 } 1486 aprint_normal(" port %d", uaa->uaa_port); 1487 #if 0 1488 /* 1489 * It gets very crowded with these locators on the attach line. 1490 * They are not really needed since they are printed in the clear 1491 * by each driver. 1492 */ 1493 if (uaa->uaa_vendor != UHUB_UNK_VENDOR) 1494 aprint_normal(" vendor 0x%04x", uaa->uaa_vendor); 1495 if (uaa->uaa_product != UHUB_UNK_PRODUCT) 1496 aprint_normal(" product 0x%04x", uaa->uaa_product); 1497 if (uaa->uaa_release != UHUB_UNK_RELEASE) 1498 aprint_normal(" release 0x%04x", uaa->uaa_release); 1499 #endif 1500 return UNCONF; 1501 } 1502 1503 int 1504 usbd_ifprint(void *aux, const char *pnp) 1505 { 1506 struct usbif_attach_arg *uiaa = aux; 1507 1508 if (pnp) 1509 return QUIET; 1510 aprint_normal(" port %d", uiaa->uiaa_port); 1511 aprint_normal(" configuration %d", uiaa->uiaa_configno); 1512 aprint_normal(" interface %d", uiaa->uiaa_ifaceno); 1513 #if 0 1514 /* 1515 * It gets very crowded with these locators on the attach line. 1516 * They are not really needed since they are printed in the clear 1517 * by each driver. 1518 */ 1519 if (uaa->uaa_vendor != UHUB_UNK_VENDOR) 1520 aprint_normal(" vendor 0x%04x", uaa->uaa_vendor); 1521 if (uaa->uaa_product != UHUB_UNK_PRODUCT) 1522 aprint_normal(" product 0x%04x", uaa->uaa_product); 1523 if (uaa->uaa_release != UHUB_UNK_RELEASE) 1524 aprint_normal(" release 0x%04x", uaa->uaa_release); 1525 #endif 1526 return UNCONF; 1527 } 1528 1529 void 1530 usbd_fill_deviceinfo(struct usbd_device *dev, struct usb_device_info *di, 1531 int usedev) 1532 { 1533 struct usbd_port *p; 1534 int i, j, err; 1535 1536 di->udi_bus = device_unit(dev->ud_bus->ub_usbctl); 1537 di->udi_addr = dev->ud_addr; 1538 di->udi_cookie = dev->ud_cookie; 1539 usbd_devinfo_vp(dev, di->udi_vendor, sizeof(di->udi_vendor), 1540 di->udi_product, sizeof(di->udi_product), usedev, 1); 1541 usbd_printBCD(di->udi_release, sizeof(di->udi_release), 1542 UGETW(dev->ud_ddesc.bcdDevice)); 1543 if (usedev) { 1544 usbd_status uerr = usbd_get_string(dev, 1545 dev->ud_ddesc.iSerialNumber, di->udi_serial); 1546 if (uerr != USBD_NORMAL_COMPLETION) { 1547 di->udi_serial[0] = '\0'; 1548 } else { 1549 usbd_trim_spaces(di->udi_serial); 1550 } 1551 } else { 1552 di->udi_serial[0] = '\0'; 1553 if (dev->ud_serial) { 1554 strlcpy(di->udi_serial, dev->ud_serial, 1555 sizeof(di->udi_serial)); 1556 } 1557 } 1558 1559 di->udi_vendorNo = UGETW(dev->ud_ddesc.idVendor); 1560 di->udi_productNo = UGETW(dev->ud_ddesc.idProduct); 1561 di->udi_releaseNo = UGETW(dev->ud_ddesc.bcdDevice); 1562 di->udi_class = dev->ud_ddesc.bDeviceClass; 1563 di->udi_subclass = dev->ud_ddesc.bDeviceSubClass; 1564 di->udi_protocol = dev->ud_ddesc.bDeviceProtocol; 1565 di->udi_config = dev->ud_config; 1566 di->udi_power = dev->ud_selfpowered ? 0 : dev->ud_power; 1567 di->udi_speed = dev->ud_speed; 1568 1569 if (dev->ud_subdevlen > 0) { 1570 for (i = 0, j = 0; i < dev->ud_subdevlen && 1571 j < USB_MAX_DEVNAMES; i++) { 1572 if (!dev->ud_subdevs[i]) 1573 continue; 1574 strncpy(di->udi_devnames[j], 1575 device_xname(dev->ud_subdevs[i]), USB_MAX_DEVNAMELEN); 1576 di->udi_devnames[j][USB_MAX_DEVNAMELEN-1] = '\0'; 1577 j++; 1578 } 1579 } else { 1580 j = 0; 1581 } 1582 for (/* j is set */; j < USB_MAX_DEVNAMES; j++) 1583 di->udi_devnames[j][0] = 0; /* empty */ 1584 1585 if (!dev->ud_hub) { 1586 di->udi_nports = 0; 1587 return; 1588 } 1589 1590 const int nports = dev->ud_hub->uh_hubdesc.bNbrPorts; 1591 for (i = 0; i < __arraycount(di->udi_ports) && i < nports; i++) { 1592 p = &dev->ud_hub->uh_ports[i]; 1593 if (p->up_dev) 1594 err = p->up_dev->ud_addr; 1595 else { 1596 const int s = UGETW(p->up_status.wPortStatus); 1597 const bool sshub_p = USB_IS_SS(dev->ud_speed); 1598 if (s & UPS_PORT_ENABLED) 1599 err = USB_PORT_ENABLED; 1600 else if (s & UPS_SUSPEND) 1601 err = USB_PORT_SUSPENDED; 1602 /* 1603 * Note: UPS_PORT_POWER_SS is available only 1604 * on 3.x, and UPS_PORT_POWER is available 1605 * only on 2.0 or 1.1. 1606 */ 1607 else if (sshub_p && (s & UPS_PORT_POWER_SS)) 1608 err = USB_PORT_POWERED; 1609 else if (!sshub_p && (s & UPS_PORT_POWER)) 1610 err = USB_PORT_POWERED; 1611 else 1612 err = USB_PORT_DISABLED; 1613 } 1614 di->udi_ports[i] = err; 1615 } 1616 di->udi_nports = nports; 1617 } 1618 1619 #ifdef COMPAT_30 1620 void 1621 usbd_fill_deviceinfo_old(struct usbd_device *dev, struct usb_device_info_old *di, 1622 int usedev) 1623 { 1624 struct usbd_port *p; 1625 int i, j, err; 1626 1627 di->udi_bus = device_unit(dev->ud_bus->ub_usbctl); 1628 di->udi_addr = dev->ud_addr; 1629 di->udi_cookie = dev->ud_cookie; 1630 usbd_devinfo_vp(dev, di->udi_vendor, sizeof(di->udi_vendor), 1631 di->udi_product, sizeof(di->udi_product), usedev, 0); 1632 usbd_printBCD(di->udi_release, sizeof(di->udi_release), 1633 UGETW(dev->ud_ddesc.bcdDevice)); 1634 di->udi_vendorNo = UGETW(dev->ud_ddesc.idVendor); 1635 di->udi_productNo = UGETW(dev->ud_ddesc.idProduct); 1636 di->udi_releaseNo = UGETW(dev->ud_ddesc.bcdDevice); 1637 di->udi_class = dev->ud_ddesc.bDeviceClass; 1638 di->udi_subclass = dev->ud_ddesc.bDeviceSubClass; 1639 di->udi_protocol = dev->ud_ddesc.bDeviceProtocol; 1640 di->udi_config = dev->ud_config; 1641 di->udi_power = dev->ud_selfpowered ? 0 : dev->ud_power; 1642 di->udi_speed = dev->ud_speed; 1643 1644 if (dev->ud_subdevlen > 0) { 1645 for (i = 0, j = 0; i < dev->ud_subdevlen && 1646 j < USB_MAX_DEVNAMES; i++) { 1647 if (!dev->ud_subdevs[i]) 1648 continue; 1649 strncpy(di->udi_devnames[j], 1650 device_xname(dev->ud_subdevs[i]), USB_MAX_DEVNAMELEN); 1651 di->udi_devnames[j][USB_MAX_DEVNAMELEN-1] = '\0'; 1652 j++; 1653 } 1654 } else { 1655 j = 0; 1656 } 1657 for (/* j is set */; j < USB_MAX_DEVNAMES; j++) 1658 di->udi_devnames[j][0] = 0; /* empty */ 1659 1660 if (!dev->ud_hub) { 1661 di->udi_nports = 0; 1662 return; 1663 } 1664 1665 const int nports = dev->ud_hub->uh_hubdesc.bNbrPorts; 1666 for (i = 0; i < __arraycount(di->udi_ports) && i < nports; 1667 i++) { 1668 p = &dev->ud_hub->uh_ports[i]; 1669 if (p->up_dev) 1670 err = p->up_dev->ud_addr; 1671 else { 1672 const int s = UGETW(p->up_status.wPortStatus); 1673 if (s & UPS_PORT_ENABLED) 1674 err = USB_PORT_ENABLED; 1675 else if (s & UPS_SUSPEND) 1676 err = USB_PORT_SUSPENDED; 1677 else if (s & UPS_PORT_POWER) 1678 err = USB_PORT_POWERED; 1679 else 1680 err = USB_PORT_DISABLED; 1681 } 1682 di->udi_ports[i] = err; 1683 } 1684 di->udi_nports = nports; 1685 } 1686 #endif 1687 1688 1689 void 1690 usb_free_device(struct usbd_device *dev) 1691 { 1692 int ifcidx, nifc; 1693 1694 if (dev->ud_pipe0 != NULL) 1695 usbd_kill_pipe(dev->ud_pipe0); 1696 if (dev->ud_ifaces != NULL) { 1697 nifc = dev->ud_cdesc->bNumInterface; 1698 for (ifcidx = 0; ifcidx < nifc; ifcidx++) 1699 usbd_free_iface_data(dev, ifcidx); 1700 kmem_free(dev->ud_ifaces, 1701 nifc * sizeof(struct usbd_interface)); 1702 } 1703 if (dev->ud_cdesc != NULL) 1704 kmem_free(dev->ud_cdesc, UGETW(dev->ud_cdesc->wTotalLength)); 1705 if (dev->ud_bdesc != NULL) 1706 kmem_free(dev->ud_bdesc, UGETW(dev->ud_bdesc->wTotalLength)); 1707 if (dev->ud_subdevlen > 0) { 1708 kmem_free(dev->ud_subdevs, 1709 dev->ud_subdevlen * sizeof(device_t)); 1710 dev->ud_subdevlen = 0; 1711 } 1712 if (dev->ud_vendor) { 1713 kmem_free(dev->ud_vendor, USB_MAX_ENCODED_STRING_LEN); 1714 } 1715 if (dev->ud_product) { 1716 kmem_free(dev->ud_product, USB_MAX_ENCODED_STRING_LEN); 1717 } 1718 if (dev->ud_serial) { 1719 kmem_free(dev->ud_serial, USB_MAX_ENCODED_STRING_LEN); 1720 } 1721 kmem_free(dev, sizeof(*dev)); 1722 } 1723 1724 /* 1725 * The general mechanism for detaching drivers works as follows: Each 1726 * driver is responsible for maintaining a reference count on the 1727 * number of outstanding references to its softc (e.g. from 1728 * processing hanging in a read or write). The detach method of the 1729 * driver decrements this counter and flags in the softc that the 1730 * driver is dying and then wakes any sleepers. It then sleeps on the 1731 * softc. Each place that can sleep must maintain the reference 1732 * count. When the reference count drops to -1 (0 is the normal value 1733 * of the reference count) the a wakeup on the softc is performed 1734 * signaling to the detach waiter that all references are gone. 1735 */ 1736 1737 /* 1738 * Called from process context when we discover that a port has 1739 * been disconnected. 1740 */ 1741 int 1742 usb_disconnect_port(struct usbd_port *up, device_t parent, int flags) 1743 { 1744 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1745 struct usbd_device *dev = up->up_dev; 1746 device_t subdev; 1747 char subdevname[16]; 1748 const char *hubname = device_xname(parent); 1749 int i, rc; 1750 1751 DPRINTFN(3, "up=%p dev=%p port=%d", up, dev, up->up_portno, 0); 1752 1753 if (dev == NULL) { 1754 return 0; 1755 } 1756 1757 if (dev->ud_subdevlen > 0) { 1758 DPRINTFN(3, "disconnect subdevs", 0, 0, 0, 0); 1759 for (i = 0; i < dev->ud_subdevlen; i++) { 1760 if ((subdev = dev->ud_subdevs[i]) == NULL) 1761 continue; 1762 strlcpy(subdevname, device_xname(subdev), 1763 sizeof(subdevname)); 1764 if ((rc = config_detach(subdev, flags)) != 0) 1765 return rc; 1766 printf("%s: at %s", subdevname, hubname); 1767 if (up->up_portno != 0) 1768 printf(" port %d", up->up_portno); 1769 printf(" (addr %d) disconnected\n", dev->ud_addr); 1770 } 1771 KASSERT(!dev->ud_nifaces_claimed); 1772 } 1773 1774 mutex_enter(dev->ud_bus->ub_lock); 1775 dev->ud_bus->ub_devices[usb_addr2dindex(dev->ud_addr)] = NULL; 1776 up->up_dev = NULL; 1777 mutex_exit(dev->ud_bus->ub_lock); 1778 1779 usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev); 1780 1781 usb_free_device(dev); 1782 1783 return 0; 1784 } 1785
Indexes created Fri Sep 26 08:10:20 GMT 2025