usb_subr.c revision 1.196.4.2.2.1
1 /* $NetBSD: usb_subr.c,v 1.196.4.2.2.1 2016/09/06 20:33:09 skrll 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 1.196.4.2.2.1 2016/09/06 20:33:09 skrll 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 bd, *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 /* get short bos desc */ 670 err = usbd_get_bos_desc(dev, index, &bd); 671 if (!err) { 672 int blen = UGETW(bd.wTotalLength); 673 bdp = kmem_alloc(blen, KM_SLEEP); 674 if (bdp == NULL) { 675 err = USBD_NOMEM; 676 goto bad; 677 } 678 679 /* Get the full desc */ 680 for (i = 0; i < 3; i++) { 681 err = usbd_get_desc(dev, UDESC_BOS, index, blen, 682 bdp); 683 if (!err) 684 break; 685 usbd_delay_ms(dev, 200); 686 } 687 if (err || bdp->bDescriptorType != UDESC_BOS) { 688 DPRINTF("error %d or bad desc %d", err, 689 bdp->bDescriptorType, 0, 0); 690 kmem_free(bdp, blen); 691 bdp = NULL; 692 } 693 } 694 } 695 dev->ud_bdesc = bdp; 696 697 /* 698 * Figure out if the device is self or bus powered. 699 */ 700 #if 0 /* XXX various devices don't report the power state correctly */ 701 selfpowered = 0; 702 err = usbd_get_device_status(dev, &ds); 703 if (!err && (UGETW(ds.wStatus) & UDS_SELF_POWERED)) 704 selfpowered = 1; 705 #endif 706 /* 707 * Use the power state in the configuration we are going 708 * to set. This doesn't necessarily reflect the actual 709 * power state of the device; the driver can control this 710 * by choosing the appropriate configuration. 711 */ 712 selfpowered = !!(cdp->bmAttributes & UC_SELF_POWERED); 713 714 DPRINTF("addr %d cno=%d attr=0x%02x, selfpowered=%d", 715 dev->ud_addr, cdp->bConfigurationValue, cdp->bmAttributes, 716 selfpowered); 717 DPRINTF("max power=%d", cdp->bMaxPower * 2, 0, 0, 0); 718 719 /* Check if we have enough power. */ 720 #if 0 /* this is a no-op, see above */ 721 if ((cdp->bmAttributes & UC_SELF_POWERED) && !selfpowered) { 722 if (msg) 723 printf("%s: device addr %d (config %d): " 724 "can't set self powered configuration\n", 725 device_xname(dev->ud_bus->bdev), dev->ud_addr, 726 cdp->bConfigurationValue); 727 err = USBD_NO_POWER; 728 goto bad; 729 } 730 #endif 731 #ifdef USB_DEBUG 732 if (dev->ud_powersrc == NULL) { 733 DPRINTF("No power source?", 0, 0, 0, 0); 734 err = USBD_IOERROR; 735 goto bad; 736 } 737 #endif 738 power = cdp->bMaxPower * 2; 739 if (power > dev->ud_powersrc->up_power) { 740 DPRINTF("power exceeded %d %d", power, dev->ud_powersrc->up_power, 741 0, 0); 742 /* XXX print nicer message. */ 743 if (msg) 744 printf("%s: device addr %d (config %d) exceeds power " 745 "budget, %d mA > %d mA\n", 746 device_xname(dev->ud_bus->ub_usbctl), dev->ud_addr, 747 cdp->bConfigurationValue, 748 power, dev->ud_powersrc->up_power); 749 err = USBD_NO_POWER; 750 goto bad; 751 } 752 dev->ud_power = power; 753 dev->ud_selfpowered = selfpowered; 754 755 /* Set the actual configuration value. */ 756 DPRINTF("set config %d", cdp->bConfigurationValue, 0, 0, 0); 757 err = usbd_set_config(dev, cdp->bConfigurationValue); 758 if (err) { 759 DPRINTF("setting config=%d failed, error=%d", 760 cdp->bConfigurationValue, err, 0, 0); 761 goto bad; 762 } 763 764 /* Allocate and fill interface data. */ 765 nifc = cdp->bNumInterface; 766 dev->ud_ifaces = kmem_alloc(nifc * sizeof(struct usbd_interface), 767 KM_SLEEP); 768 if (dev->ud_ifaces == NULL) { 769 err = USBD_NOMEM; 770 goto bad; 771 } 772 DPRINTFN(5, "dev=%p cdesc=%p", dev, cdp, 0, 0); 773 dev->ud_cdesc = cdp; 774 dev->ud_config = cdp->bConfigurationValue; 775 for (ifcidx = 0; ifcidx < nifc; ifcidx++) { 776 err = usbd_fill_iface_data(dev, ifcidx, 0); 777 if (err) { 778 while (--ifcidx >= 0) 779 usbd_free_iface_data(dev, ifcidx); 780 goto bad; 781 } 782 } 783 784 return USBD_NORMAL_COMPLETION; 785 786 bad: 787 kmem_free(cdp, len); 788 if (bdp != NULL) { 789 kmem_free(bdp, UGETW(bdp->wTotalLength)); 790 dev->ud_bdesc = NULL; 791 } 792 return err; 793 } 794 795 /* XXX add function for alternate settings */ 796 797 usbd_status 798 usbd_setup_pipe(struct usbd_device *dev, struct usbd_interface *iface, 799 struct usbd_endpoint *ep, int ival, struct usbd_pipe **pipe) 800 { 801 return usbd_setup_pipe_flags(dev, iface, ep, ival, pipe, 0); 802 } 803 804 usbd_status 805 usbd_setup_pipe_flags(struct usbd_device *dev, struct usbd_interface *iface, 806 struct usbd_endpoint *ep, int ival, struct usbd_pipe **pipe, uint8_t flags) 807 { 808 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 809 struct usbd_pipe *p; 810 usbd_status err; 811 812 p = kmem_alloc(dev->ud_bus->ub_pipesize, KM_SLEEP); 813 DPRINTFN(1, "dev=%p addr=%d iface=%p ep=%p pipe=%p", dev, dev->ud_addr, iface, ep); 814 if (p == NULL) { 815 DPRINTFN(1, "(nomem)", 0, 0, 0, 0); 816 return USBD_NOMEM; 817 } 818 p->up_dev = dev; 819 p->up_iface = iface; 820 p->up_endpoint = ep; 821 ep->ue_refcnt++; 822 p->up_intrxfer = NULL; 823 p->up_running = 0; 824 p->up_aborting = 0; 825 p->up_serialise = true; 826 p->up_repeat = 0; 827 p->up_interval = ival; 828 p->up_flags = flags; 829 p->up_serialise = true; 830 SIMPLEQ_INIT(&p->up_queue); 831 err = dev->ud_bus->ub_methods->ubm_open(p); 832 if (err) { 833 DPRINTF("endpoint=0x%x failed, error=%d", 834 ep->ue_edesc->bEndpointAddress, err, 0, 0); 835 kmem_intr_free(p, dev->ud_bus->ub_pipesize); 836 return err; 837 } 838 839 KASSERT(p->up_methods->upm_start || p->up_serialise == false); 840 841 usb_init_task(&p->up_async_task, usbd_clear_endpoint_stall_task, p, 842 USB_TASKQ_MPSAFE); 843 DPRINTFN(1, "pipe=%p", p, 0, 0, 0); 844 *pipe = p; 845 return USBD_NORMAL_COMPLETION; 846 } 847 848 /* Abort the device control pipe. */ 849 void 850 usbd_kill_pipe(struct usbd_pipe *pipe) 851 { 852 usbd_abort_pipe(pipe); 853 usbd_lock_pipe(pipe); 854 pipe->up_methods->upm_close(pipe); 855 usbd_unlock_pipe(pipe); 856 usb_rem_task(pipe->up_dev, &pipe->up_async_task); 857 pipe->up_endpoint->ue_refcnt--; 858 kmem_free(pipe, pipe->up_dev->ud_bus->ub_pipesize); 859 } 860 861 int 862 usbd_getnewaddr(struct usbd_bus *bus) 863 { 864 int addr; 865 866 for (addr = 1; addr < USB_MAX_DEVICES; addr++) 867 if (bus->ub_devices[addr] == NULL) 868 return addr; 869 return -1; 870 } 871 872 usbd_status 873 usbd_attach_roothub(device_t parent, struct usbd_device *dev) 874 { 875 struct usb_attach_arg uaa; 876 usb_device_descriptor_t *dd = &dev->ud_ddesc; 877 device_t dv; 878 879 uaa.uaa_device = dev; 880 uaa.uaa_usegeneric = 0; 881 uaa.uaa_port = 0; 882 uaa.uaa_vendor = UGETW(dd->idVendor); 883 uaa.uaa_product = UGETW(dd->idProduct); 884 uaa.uaa_release = UGETW(dd->bcdDevice); 885 uaa.uaa_class = dd->bDeviceClass; 886 uaa.uaa_subclass = dd->bDeviceSubClass; 887 uaa.uaa_proto = dd->bDeviceProtocol; 888 889 dv = config_found_ia(parent, "usbroothubif", &uaa, 0); 890 if (dv) { 891 dev->ud_subdevs = kmem_alloc(sizeof(dv), KM_SLEEP); 892 if (dev->ud_subdevs == NULL) 893 return USBD_NOMEM; 894 dev->ud_subdevs[0] = dv; 895 dev->ud_subdevlen = 1; 896 } 897 return USBD_NORMAL_COMPLETION; 898 } 899 900 static void 901 usbd_serialnumber(device_t dv, struct usbd_device *dev) 902 { 903 if (dev->ud_serial) { 904 prop_dictionary_set_cstring(device_properties(dv), 905 "serialnumber", dev->ud_serial); 906 } 907 } 908 909 static usbd_status 910 usbd_attachwholedevice(device_t parent, struct usbd_device *dev, int port, 911 int usegeneric) 912 { 913 struct usb_attach_arg uaa; 914 usb_device_descriptor_t *dd = &dev->ud_ddesc; 915 device_t dv; 916 int dlocs[USBDEVIFCF_NLOCS]; 917 918 uaa.uaa_device = dev; 919 uaa.uaa_usegeneric = usegeneric; 920 uaa.uaa_port = port; 921 uaa.uaa_vendor = UGETW(dd->idVendor); 922 uaa.uaa_product = UGETW(dd->idProduct); 923 uaa.uaa_release = UGETW(dd->bcdDevice); 924 uaa.uaa_class = dd->bDeviceClass; 925 uaa.uaa_subclass = dd->bDeviceSubClass; 926 uaa.uaa_proto = dd->bDeviceProtocol; 927 928 dlocs[USBDEVIFCF_PORT] = uaa.uaa_port; 929 dlocs[USBDEVIFCF_VENDOR] = uaa.uaa_vendor; 930 dlocs[USBDEVIFCF_PRODUCT] = uaa.uaa_product; 931 dlocs[USBDEVIFCF_RELEASE] = uaa.uaa_release; 932 /* the rest is historical ballast */ 933 dlocs[USBDEVIFCF_CONFIGURATION] = -1; 934 dlocs[USBDEVIFCF_INTERFACE] = -1; 935 936 KERNEL_LOCK(1, NULL); 937 dv = config_found_sm_loc(parent, "usbdevif", dlocs, &uaa, usbd_print, 938 config_stdsubmatch); 939 KERNEL_UNLOCK_ONE(NULL); 940 if (dv) { 941 dev->ud_subdevs = kmem_alloc(sizeof(dv), KM_SLEEP); 942 if (dev->ud_subdevs == NULL) 943 return USBD_NOMEM; 944 dev->ud_subdevs[0] = dv; 945 dev->ud_subdevlen = 1; 946 dev->ud_nifaces_claimed = 1; /* XXX */ 947 usbd_serialnumber(dv, dev); 948 } 949 return USBD_NORMAL_COMPLETION; 950 } 951 952 static usbd_status 953 usbd_attachinterfaces(device_t parent, struct usbd_device *dev, 954 int port, const int *locators) 955 { 956 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 957 struct usbif_attach_arg uiaa; 958 int ilocs[USBIFIFCF_NLOCS]; 959 usb_device_descriptor_t *dd = &dev->ud_ddesc; 960 int nifaces; 961 struct usbd_interface **ifaces; 962 int i, j, loc; 963 device_t dv; 964 965 nifaces = dev->ud_cdesc->bNumInterface; 966 ifaces = kmem_zalloc(nifaces * sizeof(*ifaces), KM_SLEEP); 967 if (!ifaces) 968 return USBD_NOMEM; 969 for (i = 0; i < nifaces; i++) { 970 if (!dev->ud_subdevs[i]) { 971 ifaces[i] = &dev->ud_ifaces[i]; 972 } 973 DPRINTF("interface %d %p", i, ifaces[i], 0, 0); 974 } 975 976 977 uiaa.uiaa_device = dev; 978 uiaa.uiaa_port = port; 979 uiaa.uiaa_vendor = UGETW(dd->idVendor); 980 uiaa.uiaa_product = UGETW(dd->idProduct); 981 uiaa.uiaa_release = UGETW(dd->bcdDevice); 982 uiaa.uiaa_configno = dev->ud_cdesc->bConfigurationValue; 983 uiaa.uiaa_ifaces = ifaces; 984 uiaa.uiaa_nifaces = nifaces; 985 ilocs[USBIFIFCF_PORT] = uiaa.uiaa_port; 986 ilocs[USBIFIFCF_VENDOR] = uiaa.uiaa_vendor; 987 ilocs[USBIFIFCF_PRODUCT] = uiaa.uiaa_product; 988 ilocs[USBIFIFCF_RELEASE] = uiaa.uiaa_release; 989 ilocs[USBIFIFCF_CONFIGURATION] = uiaa.uiaa_configno; 990 991 for (i = 0; i < nifaces; i++) { 992 if (!ifaces[i]) { 993 DPRINTF("interface %d claimed", i, 0, 0, 0); 994 continue; /* interface already claimed */ 995 } 996 uiaa.uiaa_iface = ifaces[i]; 997 uiaa.uiaa_class = ifaces[i]->ui_idesc->bInterfaceClass; 998 uiaa.uiaa_subclass = ifaces[i]->ui_idesc->bInterfaceSubClass; 999 uiaa.uiaa_proto = ifaces[i]->ui_idesc->bInterfaceProtocol; 1000 uiaa.uiaa_ifaceno = ifaces[i]->ui_idesc->bInterfaceNumber; 1001 1002 DPRINTF("searching for interface %d...", i, 0, 0, 0); 1003 DPRINTF("class %x subclass %x proto %x ifaceno %d", 1004 uiaa.uiaa_class, uiaa.uiaa_subclass, uiaa.uiaa_proto, 1005 uiaa.uiaa_ifaceno); 1006 ilocs[USBIFIFCF_INTERFACE] = uiaa.uiaa_ifaceno; 1007 if (locators != NULL) { 1008 loc = locators[USBIFIFCF_CONFIGURATION]; 1009 if (loc != USBIFIFCF_CONFIGURATION_DEFAULT && 1010 loc != uiaa.uiaa_configno) 1011 continue; 1012 loc = locators[USBIFIFCF_INTERFACE]; 1013 if (loc != USBIFIFCF_INTERFACE_DEFAULT && 1014 loc != uiaa.uiaa_ifaceno) 1015 continue; 1016 } 1017 KERNEL_LOCK(1, NULL); 1018 dv = config_found_sm_loc(parent, "usbifif", ilocs, &uiaa, 1019 usbd_ifprint, config_stdsubmatch); 1020 KERNEL_UNLOCK_ONE(NULL); 1021 if (!dv) 1022 continue; 1023 1024 usbd_serialnumber(dv, dev); 1025 1026 /* claim */ 1027 ifaces[i] = NULL; 1028 /* account for ifaces claimed by the driver behind our back */ 1029 for (j = 0; j < nifaces; j++) { 1030 1031 if (!ifaces[j] && !dev->ud_subdevs[j]) { 1032 DPRINTF("interface %d claimed behind our back", 1033 j, 0, 0, 0); 1034 dev->ud_subdevs[j] = dv; 1035 dev->ud_nifaces_claimed++; 1036 } 1037 } 1038 } 1039 1040 kmem_free(ifaces, nifaces * sizeof(*ifaces)); 1041 return USBD_NORMAL_COMPLETION; 1042 } 1043 1044 usbd_status 1045 usbd_probe_and_attach(device_t parent, struct usbd_device *dev, 1046 int port, int addr) 1047 { 1048 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1049 usb_device_descriptor_t *dd = &dev->ud_ddesc; 1050 int confi, nifaces; 1051 usbd_status err; 1052 1053 /* First try with device specific drivers. */ 1054 DPRINTF("trying device specific drivers", 0, 0, 0, 0); 1055 err = usbd_attachwholedevice(parent, dev, port, 0); 1056 if (dev->ud_nifaces_claimed || err) 1057 return err; 1058 DPRINTF("no device specific driver found", 0, 0, 0, 0); 1059 1060 DPRINTF("looping over %d configurations", dd->bNumConfigurations, 1061 0, 0, 0); 1062 for (confi = 0; confi < dd->bNumConfigurations; confi++) { 1063 DPRINTFN(1, "trying config idx=%d", confi, 0, 0, 0); 1064 err = usbd_set_config_index(dev, confi, 1); 1065 if (err) { 1066 DPRINTF("port %d, set config at addr %d failed, " 1067 "error=%d", port, addr, err, 0); 1068 printf("%s: port %d, set config at addr %d failed\n", 1069 device_xname(parent), port, addr); 1070 return err; 1071 } 1072 nifaces = dev->ud_cdesc->bNumInterface; 1073 dev->ud_subdevs = kmem_zalloc(nifaces * sizeof(device_t), 1074 KM_SLEEP); 1075 if (dev->ud_subdevs == NULL) 1076 return USBD_NOMEM; 1077 dev->ud_subdevlen = nifaces; 1078 1079 err = usbd_attachinterfaces(parent, dev, port, NULL); 1080 1081 if (!dev->ud_nifaces_claimed) { 1082 kmem_free(dev->ud_subdevs, 1083 dev->ud_subdevlen * sizeof(device_t)); 1084 dev->ud_subdevs = 0; 1085 dev->ud_subdevlen = 0; 1086 } 1087 if (dev->ud_nifaces_claimed || err) 1088 return err; 1089 } 1090 /* No interfaces were attached in any of the configurations. */ 1091 1092 if (dd->bNumConfigurations > 1) /* don't change if only 1 config */ 1093 usbd_set_config_index(dev, 0, 0); 1094 1095 DPRINTF("no interface drivers found", 0, 0, 0, 0); 1096 1097 /* Finally try the generic driver. */ 1098 err = usbd_attachwholedevice(parent, dev, port, 1); 1099 1100 /* 1101 * The generic attach failed, but leave the device as it is. 1102 * We just did not find any drivers, that's all. The device is 1103 * fully operational and not harming anyone. 1104 */ 1105 DPRINTF("generic attach failed", 0, 0, 0, 0); 1106 1107 return USBD_NORMAL_COMPLETION; 1108 } 1109 1110 /** 1111 * Called from uhub_rescan(). usbd_new_device() for the target dev must be 1112 * called before calling this. 1113 */ 1114 usbd_status 1115 usbd_reattach_device(device_t parent, struct usbd_device *dev, 1116 int port, const int *locators) 1117 { 1118 int i, loc; 1119 1120 if (locators != NULL) { 1121 loc = locators[USBIFIFCF_PORT]; 1122 if (loc != USBIFIFCF_PORT_DEFAULT && loc != port) 1123 return USBD_NORMAL_COMPLETION; 1124 loc = locators[USBIFIFCF_VENDOR]; 1125 if (loc != USBIFIFCF_VENDOR_DEFAULT && 1126 loc != UGETW(dev->ud_ddesc.idVendor)) 1127 return USBD_NORMAL_COMPLETION; 1128 loc = locators[USBIFIFCF_PRODUCT]; 1129 if (loc != USBIFIFCF_PRODUCT_DEFAULT && 1130 loc != UGETW(dev->ud_ddesc.idProduct)) 1131 return USBD_NORMAL_COMPLETION; 1132 loc = locators[USBIFIFCF_RELEASE]; 1133 if (loc != USBIFIFCF_RELEASE_DEFAULT && 1134 loc != UGETW(dev->ud_ddesc.bcdDevice)) 1135 return USBD_NORMAL_COMPLETION; 1136 } 1137 if (dev->ud_subdevlen == 0) { 1138 /* XXX: check USBIFIFCF_CONFIGURATION and 1139 * USBIFIFCF_INTERFACE too */ 1140 return usbd_probe_and_attach(parent, dev, port, dev->ud_addr); 1141 } else if (dev->ud_subdevlen != dev->ud_cdesc->bNumInterface) { 1142 /* device-specific or generic driver is already attached. */ 1143 return USBD_NORMAL_COMPLETION; 1144 } 1145 /* Does the device have unconfigured interfaces? */ 1146 for (i = 0; i < dev->ud_subdevlen; i++) { 1147 if (dev->ud_subdevs[i] == NULL) { 1148 break; 1149 } 1150 } 1151 if (i >= dev->ud_subdevlen) 1152 return USBD_NORMAL_COMPLETION; 1153 return usbd_attachinterfaces(parent, dev, port, locators); 1154 } 1155 1156 /* 1157 * Get the first 8 bytes of the device descriptor. 1158 * Do as Windows does: try to read 64 bytes -- there are devices which 1159 * recognize the initial descriptor fetch (before the control endpoint's 1160 * MaxPacketSize is known by the host) by exactly this length. 1161 */ 1162 usbd_status 1163 usbd_get_initial_ddesc(struct usbd_device *dev, usb_device_descriptor_t *desc) 1164 { 1165 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1166 usb_device_request_t req; 1167 char buf[64]; 1168 int res, actlen; 1169 1170 DPRINTFN(5, "dev %p", dev, 0, 0, 0); 1171 1172 req.bmRequestType = UT_READ_DEVICE; 1173 req.bRequest = UR_GET_DESCRIPTOR; 1174 USETW2(req.wValue, UDESC_DEVICE, 0); 1175 USETW(req.wIndex, 0); 1176 USETW(req.wLength, 64); 1177 res = usbd_do_request_flags(dev, &req, buf, USBD_SHORT_XFER_OK, 1178 &actlen, USBD_DEFAULT_TIMEOUT); 1179 if (res) 1180 return res; 1181 if (actlen < 8) 1182 return USBD_SHORT_XFER; 1183 memcpy(desc, buf, 8); 1184 return USBD_NORMAL_COMPLETION; 1185 } 1186 1187 /* 1188 * Called when a new device has been put in the powered state, 1189 * but not yet in the addressed state. 1190 * Get initial descriptor, set the address, get full descriptor, 1191 * and attach a driver. 1192 */ 1193 usbd_status 1194 usbd_new_device(device_t parent, struct usbd_bus* bus, int depth, 1195 int speed, int port, struct usbd_port *up) 1196 { 1197 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1198 struct usbd_device *dev, *adev; 1199 struct usbd_device *hub; 1200 usb_device_descriptor_t *dd; 1201 usb_port_status_t ps; 1202 usbd_status err; 1203 int addr; 1204 int i; 1205 int p; 1206 1207 DPRINTF("bus=%p port=%d depth=%d speed=%d", bus, port, depth, speed); 1208 1209 if (bus->ub_methods->ubm_newdev != NULL) 1210 return (bus->ub_methods->ubm_newdev)(parent, bus, depth, speed, 1211 port, up); 1212 1213 addr = usbd_getnewaddr(bus); 1214 if (addr < 0) { 1215 printf("%s: No free USB addresses, new device ignored.\n", 1216 device_xname(bus->ub_usbctl)); 1217 return USBD_NO_ADDR; 1218 } 1219 1220 dev = kmem_zalloc(sizeof(*dev), KM_SLEEP); 1221 if (dev == NULL) 1222 return USBD_NOMEM; 1223 1224 dev->ud_bus = bus; 1225 1226 /* Set up default endpoint handle. */ 1227 dev->ud_ep0.ue_edesc = &dev->ud_ep0desc; 1228 1229 /* Set up default endpoint descriptor. */ 1230 dev->ud_ep0desc.bLength = USB_ENDPOINT_DESCRIPTOR_SIZE; 1231 dev->ud_ep0desc.bDescriptorType = UDESC_ENDPOINT; 1232 dev->ud_ep0desc.bEndpointAddress = USB_CONTROL_ENDPOINT; 1233 dev->ud_ep0desc.bmAttributes = UE_CONTROL; 1234 /* 1235 * temporary, will be fixed after first descriptor fetch 1236 * (which uses 64 bytes so it shouldn't be less), 1237 * highspeed devices must support 64 byte packets anyway 1238 */ 1239 if (speed == USB_SPEED_HIGH || speed == USB_SPEED_FULL) 1240 USETW(dev->ud_ep0desc.wMaxPacketSize, 64); 1241 else 1242 USETW(dev->ud_ep0desc.wMaxPacketSize, USB_MAX_IPACKET); 1243 1244 dev->ud_ep0desc.bInterval = 0; 1245 1246 /* doesn't matter, just don't leave it uninitialized */ 1247 dev->ud_ep0.ue_toggle = 0; 1248 1249 dev->ud_quirks = &usbd_no_quirk; 1250 dev->ud_addr = USB_START_ADDR; 1251 dev->ud_ddesc.bMaxPacketSize = 0; 1252 dev->ud_depth = depth; 1253 dev->ud_powersrc = up; 1254 dev->ud_myhub = up->up_parent; 1255 1256 up->up_dev = dev; 1257 1258 /* Locate port on upstream high speed hub */ 1259 for (adev = dev, hub = up->up_parent; 1260 hub != NULL && hub->ud_speed != USB_SPEED_HIGH; 1261 adev = hub, hub = hub->ud_myhub) 1262 ; 1263 if (hub) { 1264 for (p = 0; p < hub->ud_hub->uh_hubdesc.bNbrPorts; p++) { 1265 if (hub->ud_hub->uh_ports[p].up_dev == adev) { 1266 dev->ud_myhsport = &hub->ud_hub->uh_ports[p]; 1267 goto found; 1268 } 1269 } 1270 panic("usbd_new_device: cannot find HS port"); 1271 found: 1272 DPRINTFN(1, "high speed port %d", p, 0, 0, 0); 1273 } else { 1274 dev->ud_myhsport = NULL; 1275 } 1276 dev->ud_speed = speed; 1277 dev->ud_langid = USBD_NOLANG; 1278 dev->ud_cookie.cookie = ++usb_cookie_no; 1279 1280 /* Establish the default pipe. */ 1281 err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL, 1282 &dev->ud_pipe0, USBD_MPSAFE); 1283 if (err) { 1284 usbd_remove_device(dev, up); 1285 return err; 1286 } 1287 1288 dd = &dev->ud_ddesc; 1289 /* Try a few times in case the device is slow (i.e. outside specs.) */ 1290 for (i = 0; i < 10; i++) { 1291 /* Get the first 8 bytes of the device descriptor. */ 1292 err = usbd_get_initial_ddesc(dev, dd); 1293 if (!err) 1294 break; 1295 usbd_delay_ms(dev, 200); 1296 if ((i & 3) == 3) 1297 usbd_reset_port(up->up_parent, port, &ps); 1298 } 1299 if (err) { 1300 DPRINTF("addr=%d, getting first desc failed: %d", addr, err, 1301 0, 0); 1302 usbd_remove_device(dev, up); 1303 return err; 1304 } 1305 1306 /* Windows resets the port here, do likewise */ 1307 if (up->up_parent) 1308 usbd_reset_port(up->up_parent, port, &ps); 1309 1310 if (speed == USB_SPEED_HIGH) { 1311 /* Max packet size must be 64 (sec 5.5.3). */ 1312 if (dd->bMaxPacketSize != USB_2_MAX_CTRL_PACKET) { 1313 #ifdef DIAGNOSTIC 1314 printf("usbd_new_device: addr=%d bad max packet " 1315 "size=%d. adjusting to %d.\n", 1316 addr, dd->bMaxPacketSize, USB_2_MAX_CTRL_PACKET); 1317 #endif 1318 dd->bMaxPacketSize = USB_2_MAX_CTRL_PACKET; 1319 } 1320 } 1321 1322 DPRINTF("adding unit addr=%d, rev=%02x, class=%d, subclass=%d", addr, 1323 UGETW(dd->bcdUSB), dd->bDeviceClass, dd->bDeviceSubClass); 1324 DPRINTF("protocol=%d, maxpacket=%d, len=%d, speed=%d", 1325 dd->bDeviceProtocol, dd->bMaxPacketSize, dd->bLength, dev->ud_speed); 1326 1327 if (dd->bDescriptorType != UDESC_DEVICE) { 1328 /* Illegal device descriptor */ 1329 DPRINTF("illegal descriptor %d", dd->bDescriptorType, 0, 0, 0); 1330 usbd_remove_device(dev, up); 1331 return USBD_INVAL; 1332 } 1333 1334 if (dd->bLength < USB_DEVICE_DESCRIPTOR_SIZE) { 1335 DPRINTF("bad length %d", dd->bLength, 0, 0, 0); 1336 usbd_remove_device(dev, up); 1337 return USBD_INVAL; 1338 } 1339 1340 USETW(dev->ud_ep0desc.wMaxPacketSize, dd->bMaxPacketSize); 1341 1342 /* Re-establish the default pipe with the new MPS. */ 1343 usbd_kill_pipe(dev->ud_pipe0); 1344 err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL, 1345 &dev->ud_pipe0, USBD_MPSAFE); 1346 if (err) { 1347 DPRINTF("setup default pipe failed err %d", err, 0, 0, 0); 1348 usbd_remove_device(dev, up); 1349 return err; 1350 } 1351 1352 /* Set the address */ 1353 DPRINTFN(5, "setting device address=%d", addr, 0, 0, 0); 1354 err = usbd_set_address(dev, addr); 1355 if (err) { 1356 DPRINTF("set address %d failed, err = %d", addr, err, 0, 0); 1357 err = USBD_SET_ADDR_FAILED; 1358 usbd_remove_device(dev, up); 1359 return err; 1360 } 1361 1362 /* Allow device time to set new address */ 1363 usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE); 1364 dev->ud_addr = addr; /* new device address now */ 1365 bus->ub_devices[addr] = dev; 1366 1367 /* Re-establish the default pipe with the new address. */ 1368 usbd_kill_pipe(dev->ud_pipe0); 1369 err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL, 1370 &dev->ud_pipe0, USBD_MPSAFE); 1371 if (err) { 1372 DPRINTF("setup default pipe failed, err = %d", err, 0, 0, 0); 1373 usbd_remove_device(dev, up); 1374 return err; 1375 } 1376 1377 err = usbd_reload_device_desc(dev); 1378 if (err) { 1379 DPRINTF("addr=%d, getting full desc failed, err = %d", addr, 1380 err, 0, 0); 1381 usbd_remove_device(dev, up); 1382 return err; 1383 } 1384 1385 /* Assume 100mA bus powered for now. Changed when configured. */ 1386 dev->ud_power = USB_MIN_POWER; 1387 dev->ud_selfpowered = 0; 1388 1389 DPRINTF("new dev (addr %d), dev=%p, parent=%p", addr, dev, parent, 0); 1390 1391 usbd_get_device_strings(dev); 1392 1393 usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev); 1394 1395 if (port == 0) { /* root hub */ 1396 KASSERT(addr == 1); 1397 usbd_attach_roothub(parent, dev); 1398 return USBD_NORMAL_COMPLETION; 1399 } 1400 1401 err = usbd_probe_and_attach(parent, dev, port, addr); 1402 if (err) { 1403 usbd_remove_device(dev, up); 1404 return err; 1405 } 1406 1407 return USBD_NORMAL_COMPLETION; 1408 } 1409 1410 usbd_status 1411 usbd_reload_device_desc(struct usbd_device *dev) 1412 { 1413 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1414 usb_device_descriptor_t *udd = &dev->ud_ddesc; 1415 usbd_status err; 1416 1417 /* Get the full device descriptor. */ 1418 err = usbd_get_device_desc(dev, udd); 1419 if (err) 1420 return err; 1421 1422 DPRINTFN(15, "bLength %5u", udd->bLength, 0, 0, 0); 1423 DPRINTFN(15, "bDescriptorType %5u", udd->bDescriptorType, 0, 0, 0); 1424 DPRINTFN(15, "bcdUSB %2x.%02x", udd->bcdUSB[1], 1425 udd->bcdUSB[0], 0, 0); 1426 DPRINTFN(15, "bDeviceClass %5u", udd->bDeviceClass, 0, 0, 0); 1427 DPRINTFN(15, "bDeviceSubClass %5u", udd->bDeviceSubClass, 0, 0, 0); 1428 DPRINTFN(15, "bDeviceProtocol %5u", udd->bDeviceProtocol, 0, 0, 0); 1429 DPRINTFN(15, "bMaxPacketSize0 %5u", udd->bMaxPacketSize, 0, 0, 0); 1430 DPRINTFN(15, "idVendor 0x%04x", udd->idVendor, 0, 0, 0); 1431 DPRINTFN(15, "idProduct 0x%04x", udd->idProduct, 0, 0, 0); 1432 DPRINTFN(15, "bcdDevice %2x.%02x", udd->bcdDevice[1], 1433 udd->bcdDevice[0], 0, 0); 1434 DPRINTFN(15, "iManufacturer %5u", udd->iManufacturer, 0, 0, 0); 1435 DPRINTFN(15, "iProduct %5u", udd->iProduct, 0, 0, 0); 1436 DPRINTFN(15, "iSerial %5u", udd->iSerialNumber, 0, 0, 0); 1437 DPRINTFN(15, "bNumConfigurations %5u", udd->bNumConfigurations, 0, 0, 1438 0); 1439 1440 /* Figure out what's wrong with this device. */ 1441 dev->ud_quirks = usbd_find_quirk(udd); 1442 1443 return USBD_NORMAL_COMPLETION; 1444 } 1445 1446 void 1447 usbd_remove_device(struct usbd_device *dev, struct usbd_port *up) 1448 { 1449 1450 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1451 1452 DPRINTF("dev %p up %p", dev, up, 0, 0); 1453 1454 if (dev->ud_pipe0 != NULL) 1455 usbd_kill_pipe(dev->ud_pipe0); 1456 up->up_dev = NULL; 1457 dev->ud_bus->ub_devices[dev->ud_addr] = NULL; 1458 1459 kmem_free(dev, sizeof(*dev)); 1460 } 1461 1462 int 1463 usbd_print(void *aux, const char *pnp) 1464 { 1465 struct usb_attach_arg *uaa = aux; 1466 1467 if (pnp) { 1468 #define USB_DEVINFO 1024 1469 char *devinfo; 1470 if (!uaa->uaa_usegeneric) 1471 return QUIET; 1472 devinfo = kmem_alloc(USB_DEVINFO, KM_SLEEP); 1473 usbd_devinfo(uaa->uaa_device, 1, devinfo, USB_DEVINFO); 1474 aprint_normal("%s, %s", devinfo, pnp); 1475 kmem_free(devinfo, USB_DEVINFO); 1476 } 1477 aprint_normal(" port %d", uaa->uaa_port); 1478 #if 0 1479 /* 1480 * It gets very crowded with these locators on the attach line. 1481 * They are not really needed since they are printed in the clear 1482 * by each driver. 1483 */ 1484 if (uaa->uaa_vendor != UHUB_UNK_VENDOR) 1485 aprint_normal(" vendor 0x%04x", uaa->uaa_vendor); 1486 if (uaa->uaa_product != UHUB_UNK_PRODUCT) 1487 aprint_normal(" product 0x%04x", uaa->uaa_product); 1488 if (uaa->uaa_release != UHUB_UNK_RELEASE) 1489 aprint_normal(" release 0x%04x", uaa->uaa_release); 1490 #endif 1491 return UNCONF; 1492 } 1493 1494 int 1495 usbd_ifprint(void *aux, const char *pnp) 1496 { 1497 struct usbif_attach_arg *uiaa = aux; 1498 1499 if (pnp) 1500 return QUIET; 1501 aprint_normal(" port %d", uiaa->uiaa_port); 1502 aprint_normal(" configuration %d", uiaa->uiaa_configno); 1503 aprint_normal(" interface %d", uiaa->uiaa_ifaceno); 1504 #if 0 1505 /* 1506 * It gets very crowded with these locators on the attach line. 1507 * They are not really needed since they are printed in the clear 1508 * by each driver. 1509 */ 1510 if (uaa->uaa_vendor != UHUB_UNK_VENDOR) 1511 aprint_normal(" vendor 0x%04x", uaa->uaa_vendor); 1512 if (uaa->uaa_product != UHUB_UNK_PRODUCT) 1513 aprint_normal(" product 0x%04x", uaa->uaa_product); 1514 if (uaa->uaa_release != UHUB_UNK_RELEASE) 1515 aprint_normal(" release 0x%04x", uaa->uaa_release); 1516 #endif 1517 return UNCONF; 1518 } 1519 1520 void 1521 usbd_fill_deviceinfo(struct usbd_device *dev, struct usb_device_info *di, 1522 int usedev) 1523 { 1524 struct usbd_port *p; 1525 int i, j, err, s; 1526 1527 di->udi_bus = device_unit(dev->ud_bus->ub_usbctl); 1528 di->udi_addr = dev->ud_addr; 1529 di->udi_cookie = dev->ud_cookie; 1530 usbd_devinfo_vp(dev, di->udi_vendor, sizeof(di->udi_vendor), 1531 di->udi_product, sizeof(di->udi_product), usedev, 1); 1532 usbd_printBCD(di->udi_release, sizeof(di->udi_release), 1533 UGETW(dev->ud_ddesc.bcdDevice)); 1534 if (usedev) { 1535 usbd_status uerr = usbd_get_string(dev, 1536 dev->ud_ddesc.iSerialNumber, di->udi_serial); 1537 if (uerr != USBD_NORMAL_COMPLETION) { 1538 di->udi_serial[0] = '\0'; 1539 } else { 1540 usbd_trim_spaces(di->udi_serial); 1541 } 1542 } else { 1543 di->udi_serial[0] = '\0'; 1544 if (dev->ud_serial) { 1545 strlcpy(di->udi_serial, dev->ud_serial, 1546 sizeof(di->udi_serial)); 1547 } 1548 } 1549 1550 di->udi_vendorNo = UGETW(dev->ud_ddesc.idVendor); 1551 di->udi_productNo = UGETW(dev->ud_ddesc.idProduct); 1552 di->udi_releaseNo = UGETW(dev->ud_ddesc.bcdDevice); 1553 di->udi_class = dev->ud_ddesc.bDeviceClass; 1554 di->udi_subclass = dev->ud_ddesc.bDeviceSubClass; 1555 di->udi_protocol = dev->ud_ddesc.bDeviceProtocol; 1556 di->udi_config = dev->ud_config; 1557 di->udi_power = dev->ud_selfpowered ? 0 : dev->ud_power; 1558 di->udi_speed = dev->ud_speed; 1559 1560 if (dev->ud_subdevlen > 0) { 1561 for (i = 0, j = 0; i < dev->ud_subdevlen && 1562 j < USB_MAX_DEVNAMES; i++) { 1563 if (!dev->ud_subdevs[i]) 1564 continue; 1565 strncpy(di->udi_devnames[j], 1566 device_xname(dev->ud_subdevs[i]), USB_MAX_DEVNAMELEN); 1567 di->udi_devnames[j][USB_MAX_DEVNAMELEN-1] = '\0'; 1568 j++; 1569 } 1570 } else { 1571 j = 0; 1572 } 1573 for (/* j is set */; j < USB_MAX_DEVNAMES; j++) 1574 di->udi_devnames[j][0] = 0; /* empty */ 1575 1576 if (dev->ud_hub) { 1577 for (i = 0; 1578 i < sizeof(di->udi_ports) / sizeof(di->udi_ports[0]) && 1579 i < dev->ud_hub->uh_hubdesc.bNbrPorts; 1580 i++) { 1581 p = &dev->ud_hub->uh_ports[i]; 1582 if (p->up_dev) 1583 err = p->up_dev->ud_addr; 1584 else { 1585 s = UGETW(p->up_status.wPortStatus); 1586 if (s & UPS_PORT_ENABLED) 1587 err = USB_PORT_ENABLED; 1588 else if (s & UPS_SUSPEND) 1589 err = USB_PORT_SUSPENDED; 1590 /* 1591 * Note: UPS_PORT_POWER_SS is available only 1592 * on 3.x, and UPS_PORT_POWER is available 1593 * only on 2.0 or 1.1. 1594 */ 1595 else if (USB_IS_SS(dev->ud_speed) && 1596 (s & UPS_PORT_POWER_SS)) 1597 err = USB_PORT_POWERED; 1598 else if (s & UPS_PORT_POWER) 1599 err = USB_PORT_POWERED; 1600 else 1601 err = USB_PORT_DISABLED; 1602 } 1603 di->udi_ports[i] = err; 1604 } 1605 di->udi_nports = dev->ud_hub->uh_hubdesc.bNbrPorts; 1606 } else 1607 di->udi_nports = 0; 1608 } 1609 1610 #ifdef COMPAT_30 1611 void 1612 usbd_fill_deviceinfo_old(struct usbd_device *dev, struct usb_device_info_old *di, 1613 int usedev) 1614 { 1615 struct usbd_port *p; 1616 int i, j, err, s; 1617 1618 di->udi_bus = device_unit(dev->ud_bus->ub_usbctl); 1619 di->udi_addr = dev->ud_addr; 1620 di->udi_cookie = dev->ud_cookie; 1621 usbd_devinfo_vp(dev, di->udi_vendor, sizeof(di->udi_vendor), 1622 di->udi_product, sizeof(di->udi_product), usedev, 0); 1623 usbd_printBCD(di->udi_release, sizeof(di->udi_release), 1624 UGETW(dev->ud_ddesc.bcdDevice)); 1625 di->udi_vendorNo = UGETW(dev->ud_ddesc.idVendor); 1626 di->udi_productNo = UGETW(dev->ud_ddesc.idProduct); 1627 di->udi_releaseNo = UGETW(dev->ud_ddesc.bcdDevice); 1628 di->udi_class = dev->ud_ddesc.bDeviceClass; 1629 di->udi_subclass = dev->ud_ddesc.bDeviceSubClass; 1630 di->udi_protocol = dev->ud_ddesc.bDeviceProtocol; 1631 di->udi_config = dev->ud_config; 1632 di->udi_power = dev->ud_selfpowered ? 0 : dev->ud_power; 1633 di->udi_speed = dev->ud_speed; 1634 1635 if (dev->ud_subdevlen > 0) { 1636 for (i = 0, j = 0; i < dev->ud_subdevlen && 1637 j < USB_MAX_DEVNAMES; i++) { 1638 if (!dev->ud_subdevs[i]) 1639 continue; 1640 strncpy(di->udi_devnames[j], 1641 device_xname(dev->ud_subdevs[i]), USB_MAX_DEVNAMELEN); 1642 di->udi_devnames[j][USB_MAX_DEVNAMELEN-1] = '\0'; 1643 j++; 1644 } 1645 } else { 1646 j = 0; 1647 } 1648 for (/* j is set */; j < USB_MAX_DEVNAMES; j++) 1649 di->udi_devnames[j][0] = 0; /* empty */ 1650 1651 if (dev->ud_hub) { 1652 for (i = 0; 1653 i < sizeof(di->udi_ports) / sizeof(di->udi_ports[0]) && 1654 i < dev->ud_hub->uh_hubdesc.bNbrPorts; 1655 i++) { 1656 p = &dev->ud_hub->uh_ports[i]; 1657 if (p->up_dev) 1658 err = p->up_dev->ud_addr; 1659 else { 1660 s = UGETW(p->up_status.wPortStatus); 1661 if (s & UPS_PORT_ENABLED) 1662 err = USB_PORT_ENABLED; 1663 else if (s & UPS_SUSPEND) 1664 err = USB_PORT_SUSPENDED; 1665 else if (s & UPS_PORT_POWER) 1666 err = USB_PORT_POWERED; 1667 else 1668 err = USB_PORT_DISABLED; 1669 } 1670 di->udi_ports[i] = err; 1671 } 1672 di->udi_nports = dev->ud_hub->uh_hubdesc.bNbrPorts; 1673 } else 1674 di->udi_nports = 0; 1675 } 1676 #endif 1677 1678 1679 void 1680 usb_free_device(struct usbd_device *dev) 1681 { 1682 int ifcidx, nifc; 1683 1684 if (dev->ud_pipe0 != NULL) 1685 usbd_kill_pipe(dev->ud_pipe0); 1686 if (dev->ud_ifaces != NULL) { 1687 nifc = dev->ud_cdesc->bNumInterface; 1688 for (ifcidx = 0; ifcidx < nifc; ifcidx++) 1689 usbd_free_iface_data(dev, ifcidx); 1690 kmem_free(dev->ud_ifaces, 1691 nifc * sizeof(struct usbd_interface)); 1692 } 1693 if (dev->ud_cdesc != NULL) 1694 kmem_free(dev->ud_cdesc, UGETW(dev->ud_cdesc->wTotalLength)); 1695 if (dev->ud_bdesc != NULL) 1696 kmem_free(dev->ud_bdesc, UGETW(dev->ud_bdesc->wTotalLength)); 1697 if (dev->ud_subdevlen > 0) { 1698 kmem_free(dev->ud_subdevs, 1699 dev->ud_subdevlen * sizeof(device_t)); 1700 dev->ud_subdevlen = 0; 1701 } 1702 if (dev->ud_vendor) { 1703 kmem_free(dev->ud_vendor, USB_MAX_ENCODED_STRING_LEN); 1704 } 1705 if (dev->ud_product) { 1706 kmem_free(dev->ud_product, USB_MAX_ENCODED_STRING_LEN); 1707 } 1708 if (dev->ud_serial) { 1709 kmem_free(dev->ud_serial, USB_MAX_ENCODED_STRING_LEN); 1710 } 1711 kmem_free(dev, sizeof(*dev)); 1712 } 1713 1714 /* 1715 * The general mechanism for detaching drivers works as follows: Each 1716 * driver is responsible for maintaining a reference count on the 1717 * number of outstanding references to its softc (e.g. from 1718 * processing hanging in a read or write). The detach method of the 1719 * driver decrements this counter and flags in the softc that the 1720 * driver is dying and then wakes any sleepers. It then sleeps on the 1721 * softc. Each place that can sleep must maintain the reference 1722 * count. When the reference count drops to -1 (0 is the normal value 1723 * of the reference count) the a wakeup on the softc is performed 1724 * signaling to the detach waiter that all references are gone. 1725 */ 1726 1727 /* 1728 * Called from process context when we discover that a port has 1729 * been disconnected. 1730 */ 1731 int 1732 usb_disconnect_port(struct usbd_port *up, device_t parent, int flags) 1733 { 1734 USBHIST_FUNC(); USBHIST_CALLED(usbdebug); 1735 struct usbd_device *dev = up->up_dev; 1736 device_t subdev; 1737 char subdevname[16]; 1738 const char *hubname = device_xname(parent); 1739 int i, rc; 1740 1741 DPRINTFN(3, "up=%p dev=%p port=%d", up, dev, up->up_portno, 0); 1742 1743 if (dev == NULL) { 1744 return 0; 1745 } 1746 1747 if (dev->ud_subdevlen > 0) { 1748 DPRINTFN(3, "disconnect subdevs", 0, 0, 0, 0); 1749 for (i = 0; i < dev->ud_subdevlen; i++) { 1750 if ((subdev = dev->ud_subdevs[i]) == NULL) 1751 continue; 1752 strlcpy(subdevname, device_xname(subdev), 1753 sizeof(subdevname)); 1754 if ((rc = config_detach(subdev, flags)) != 0) 1755 return rc; 1756 printf("%s: at %s", subdevname, hubname); 1757 if (up->up_portno != 0) 1758 printf(" port %d", up->up_portno); 1759 printf(" (addr %d) disconnected\n", dev->ud_addr); 1760 } 1761 KASSERT(!dev->ud_nifaces_claimed); 1762 } 1763 1764 usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev); 1765 dev->ud_bus->ub_devices[dev->ud_addr] = NULL; 1766 up->up_dev = NULL; 1767 usb_free_device(dev); 1768 return 0; 1769 } 1770
Indexes created Fri Sep 26 20:09:58 GMT 2025