1 /* $NetBSD: usb_subr.c,v 1.83 2001/01/08 20:21:16 augustss 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 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@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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/malloc.h> 45 #if defined(__NetBSD__) || defined(__OpenBSD__) 46 #include <sys/device.h> 47 #include <sys/select.h> 48 #elif defined(__FreeBSD__) 49 #include <sys/module.h> 50 #include <sys/bus.h> 51 #endif 52 #include <sys/proc.h> 53 54 #include <machine/bus.h> 55 56 #include <dev/usb/usb.h> 57 58 #include <dev/usb/usbdi.h> 59 #include <dev/usb/usbdi_util.h> 60 #include <dev/usb/usbdivar.h> 61 #include <dev/usb/usbdevs.h> 62 #include <dev/usb/usb_quirks.h> 63 64 #if defined(__FreeBSD__) 65 #include <machine/clock.h> 66 #define delay(d) DELAY(d) 67 #endif 68 69 #ifdef USB_DEBUG 70 #define DPRINTF(x) if (usbdebug) logprintf x 71 #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x 72 extern int usbdebug; 73 #else 74 #define DPRINTF(x) 75 #define DPRINTFN(n,x) 76 #endif 77 78 Static usbd_status usbd_set_config(usbd_device_handle, int); 79 Static void usbd_devinfo_vp(usbd_device_handle, char *, char *, int); 80 Static char *usbd_get_string(usbd_device_handle, int, char *); 81 Static int usbd_getnewaddr(usbd_bus_handle bus); 82 #if defined(__NetBSD__) 83 Static int usbd_print(void *aux, const char *pnp); 84 Static int usbd_submatch(device_ptr_t, struct cfdata *cf, void *); 85 #elif defined(__OpenBSD__) 86 Static int usbd_print(void *aux, const char *pnp); 87 Static int usbd_submatch(device_ptr_t, void *, void *); 88 #endif 89 Static void usbd_free_iface_data(usbd_device_handle dev, int ifcno); 90 Static void usbd_kill_pipe(usbd_pipe_handle); 91 Static usbd_status usbd_probe_and_attach(device_ptr_t parent, 92 usbd_device_handle dev, int port, int addr); 93 94 Static u_int32_t usb_cookie_no = 0; 95 96 #ifdef USBVERBOSE 97 typedef u_int16_t usb_vendor_id_t; 98 typedef u_int16_t usb_product_id_t; 99 100 /* 101 * Descriptions of of known vendors and devices ("products"). 102 */ 103 struct usb_knowndev { 104 usb_vendor_id_t vendor; 105 usb_product_id_t product; 106 int flags; 107 char *vendorname, *productname; 108 }; 109 #define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 110 111 #include <dev/usb/usbdevs_data.h> 112 #endif /* USBVERBOSE */ 113 114 Static const char *usbd_error_strs[] = { 115 "NORMAL_COMPLETION", 116 "IN_PROGRESS", 117 "PENDING_REQUESTS", 118 "NOT_STARTED", 119 "INVAL", 120 "NOMEM", 121 "CANCELLED", 122 "BAD_ADDRESS", 123 "IN_USE", 124 "NO_ADDR", 125 "SET_ADDR_FAILED", 126 "NO_POWER", 127 "TOO_DEEP", 128 "IOERROR", 129 "NOT_CONFIGURED", 130 "TIMEOUT", 131 "SHORT_XFER", 132 "STALLED", 133 "INTERRUPTED", 134 "XXX", 135 }; 136 137 const char * 138 usbd_errstr(usbd_status err) 139 { 140 static char buffer[5]; 141 142 if (err < USBD_ERROR_MAX) { 143 return usbd_error_strs[err]; 144 } else { 145 snprintf(buffer, sizeof buffer, "%d", err); 146 return buffer; 147 } 148 } 149 150 usbd_status 151 usbd_get_string_desc(usbd_device_handle dev, int sindex, int langid, 152 usb_string_descriptor_t *sdesc) 153 { 154 usb_device_request_t req; 155 usbd_status err; 156 157 req.bmRequestType = UT_READ_DEVICE; 158 req.bRequest = UR_GET_DESCRIPTOR; 159 USETW2(req.wValue, UDESC_STRING, sindex); 160 USETW(req.wIndex, langid); 161 USETW(req.wLength, 1); /* only size byte first */ 162 err = usbd_do_request(dev, &req, sdesc); 163 if (err) 164 return (err); 165 USETW(req.wLength, sdesc->bLength); /* the whole string */ 166 return (usbd_do_request(dev, &req, sdesc)); 167 } 168 169 char * 170 usbd_get_string(usbd_device_handle dev, int si, char *buf) 171 { 172 int swap = dev->quirks->uq_flags & UQ_SWAP_UNICODE; 173 usb_string_descriptor_t us; 174 char *s; 175 int i, n; 176 u_int16_t c; 177 usbd_status err; 178 179 if (si == 0) 180 return (0); 181 if (dev->quirks->uq_flags & UQ_NO_STRINGS) 182 return (0); 183 if (dev->langid == USBD_NOLANG) { 184 /* Set up default language */ 185 err = usbd_get_string_desc(dev, USB_LANGUAGE_TABLE, 0, &us); 186 if (err || us.bLength < 4) { 187 dev->langid = 0; /* Well, just pick English then */ 188 } else { 189 /* Pick the first language as the default. */ 190 dev->langid = UGETW(us.bString[0]); 191 } 192 } 193 err = usbd_get_string_desc(dev, si, dev->langid, &us); 194 if (err) 195 return (0); 196 s = buf; 197 n = us.bLength / 2 - 1; 198 for (i = 0; i < n; i++) { 199 c = UGETW(us.bString[i]); 200 /* Convert from Unicode, handle buggy strings. */ 201 if ((c & 0xff00) == 0) 202 *s++ = c; 203 else if ((c & 0x00ff) == 0 && swap) 204 *s++ = c >> 8; 205 else 206 *s++ = '?'; 207 } 208 *s++ = 0; 209 return (buf); 210 } 211 212 static void 213 usbd_trim_trailings_spaces(char *p) 214 { 215 char *q; 216 217 if (p == NULL) 218 return; 219 q = p + strlen(p); 220 while (--q >= p && *q == ' ') 221 *q = 0; 222 } 223 224 void 225 usbd_devinfo_vp(usbd_device_handle dev, char *v, char *p, int usedev) 226 { 227 usb_device_descriptor_t *udd = &dev->ddesc; 228 char *vendor = 0, *product = 0; 229 #ifdef USBVERBOSE 230 struct usb_knowndev *kdp; 231 #endif 232 233 if (dev == NULL) { 234 v[0] = p[0] = '\0'; 235 return; 236 } 237 238 if (usedev) { 239 vendor = usbd_get_string(dev, udd->iManufacturer, v); 240 usbd_trim_trailings_spaces(vendor); 241 product = usbd_get_string(dev, udd->iProduct, p); 242 usbd_trim_trailings_spaces(product); 243 } else { 244 vendor = NULL; 245 product = NULL; 246 } 247 #ifdef USBVERBOSE 248 if (vendor == NULL || product == NULL) { 249 for(kdp = usb_knowndevs; 250 kdp->vendorname != NULL; 251 kdp++) { 252 if (kdp->vendor == UGETW(udd->idVendor) && 253 (kdp->product == UGETW(udd->idProduct) || 254 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0)) 255 break; 256 } 257 if (kdp->vendorname != NULL) { 258 if (vendor == NULL) 259 vendor = kdp->vendorname; 260 if (product == NULL) 261 product = (kdp->flags & USB_KNOWNDEV_NOPROD) == 0 ? 262 kdp->productname : NULL; 263 } 264 } 265 #endif 266 if (vendor != NULL && *vendor) 267 strcpy(v, vendor); 268 else 269 sprintf(v, "vendor 0x%04x", UGETW(udd->idVendor)); 270 if (product != NULL && *product) 271 strcpy(p, product); 272 else 273 sprintf(p, "product 0x%04x", UGETW(udd->idProduct)); 274 } 275 276 int 277 usbd_printBCD(char *cp, int bcd) 278 { 279 return (sprintf(cp, "%x.%02x", bcd >> 8, bcd & 0xff)); 280 } 281 282 void 283 usbd_devinfo(usbd_device_handle dev, int showclass, char *cp) 284 { 285 usb_device_descriptor_t *udd = &dev->ddesc; 286 char vendor[USB_MAX_STRING_LEN]; 287 char product[USB_MAX_STRING_LEN]; 288 int bcdDevice, bcdUSB; 289 290 usbd_devinfo_vp(dev, vendor, product, 1); 291 cp += sprintf(cp, "%s %s", vendor, product); 292 if (showclass) 293 cp += sprintf(cp, ", class %d/%d", 294 udd->bDeviceClass, udd->bDeviceSubClass); 295 bcdUSB = UGETW(udd->bcdUSB); 296 bcdDevice = UGETW(udd->bcdDevice); 297 cp += sprintf(cp, ", rev "); 298 cp += usbd_printBCD(cp, bcdUSB); 299 *cp++ = '/'; 300 cp += usbd_printBCD(cp, bcdDevice); 301 cp += sprintf(cp, ", addr %d", dev->address); 302 *cp = 0; 303 } 304 305 /* Delay for a certain number of ms */ 306 void 307 usb_delay_ms(usbd_bus_handle bus, u_int ms) 308 { 309 /* Wait at least two clock ticks so we know the time has passed. */ 310 if (bus->use_polling || cold) 311 delay((ms+1) * 1000); 312 else 313 tsleep(&ms, PRIBIO, "usbdly", (ms*hz+999)/1000 + 1); 314 } 315 316 /* Delay given a device handle. */ 317 void 318 usbd_delay_ms(usbd_device_handle dev, u_int ms) 319 { 320 usb_delay_ms(dev->bus, ms); 321 } 322 323 usbd_status 324 usbd_reset_port(usbd_device_handle dev, int port, usb_port_status_t *ps) 325 { 326 usb_device_request_t req; 327 usbd_status err; 328 int n; 329 330 req.bmRequestType = UT_WRITE_CLASS_OTHER; 331 req.bRequest = UR_SET_FEATURE; 332 USETW(req.wValue, UHF_PORT_RESET); 333 USETW(req.wIndex, port); 334 USETW(req.wLength, 0); 335 err = usbd_do_request(dev, &req, 0); 336 DPRINTFN(1,("usbd_reset_port: port %d reset done, error=%s\n", 337 port, usbd_errstr(err))); 338 if (err) 339 return (err); 340 n = 10; 341 do { 342 /* Wait for device to recover from reset. */ 343 usbd_delay_ms(dev, USB_PORT_RESET_DELAY); 344 err = usbd_get_port_status(dev, port, ps); 345 if (err) { 346 DPRINTF(("usbd_reset_port: get status failed %d\n", 347 err)); 348 return (err); 349 } 350 } while ((UGETW(ps->wPortChange) & UPS_C_PORT_RESET) == 0 && --n > 0); 351 if (n == 0) 352 return (USBD_TIMEOUT); 353 err = usbd_clear_port_feature(dev, port, UHF_C_PORT_RESET); 354 #ifdef USB_DEBUG 355 if (err) 356 DPRINTF(("usbd_reset_port: clear port feature failed %d\n", 357 err)); 358 #endif 359 360 /* Wait for the device to recover from reset. */ 361 usbd_delay_ms(dev, USB_PORT_RESET_RECOVERY); 362 return (err); 363 } 364 365 usb_interface_descriptor_t * 366 usbd_find_idesc(usb_config_descriptor_t *cd, int ifaceidx, int altidx) 367 { 368 char *p = (char *)cd; 369 char *end = p + UGETW(cd->wTotalLength); 370 usb_interface_descriptor_t *d; 371 int curidx, lastidx, curaidx = 0; 372 373 for (curidx = lastidx = -1; p < end; ) { 374 d = (usb_interface_descriptor_t *)p; 375 DPRINTFN(4,("usbd_find_idesc: idx=%d(%d) altidx=%d(%d) len=%d " 376 "type=%d\n", 377 ifaceidx, curidx, altidx, curaidx, 378 d->bLength, d->bDescriptorType)); 379 if (d->bLength == 0) /* bad descriptor */ 380 break; 381 p += d->bLength; 382 if (p <= end && d->bDescriptorType == UDESC_INTERFACE) { 383 if (d->bInterfaceNumber != lastidx) { 384 lastidx = d->bInterfaceNumber; 385 curidx++; 386 curaidx = 0; 387 } else 388 curaidx++; 389 if (ifaceidx == curidx && altidx == curaidx) 390 return (d); 391 } 392 } 393 return (NULL); 394 } 395 396 usb_endpoint_descriptor_t * 397 usbd_find_edesc(usb_config_descriptor_t *cd, int ifaceidx, int altidx, 398 int endptidx) 399 { 400 char *p = (char *)cd; 401 char *end = p + UGETW(cd->wTotalLength); 402 usb_interface_descriptor_t *d; 403 usb_endpoint_descriptor_t *e; 404 int curidx; 405 406 d = usbd_find_idesc(cd, ifaceidx, altidx); 407 if (d == NULL) 408 return (NULL); 409 if (endptidx >= d->bNumEndpoints) /* quick exit */ 410 return (NULL); 411 412 curidx = -1; 413 for (p = (char *)d + d->bLength; p < end; ) { 414 e = (usb_endpoint_descriptor_t *)p; 415 if (e->bLength == 0) /* bad descriptor */ 416 break; 417 p += e->bLength; 418 if (p <= end && e->bDescriptorType == UDESC_INTERFACE) 419 return (NULL); 420 if (p <= end && e->bDescriptorType == UDESC_ENDPOINT) { 421 curidx++; 422 if (curidx == endptidx) 423 return (e); 424 } 425 } 426 return (NULL); 427 } 428 429 usbd_status 430 usbd_fill_iface_data(usbd_device_handle dev, int ifaceidx, int altidx) 431 { 432 usbd_interface_handle ifc = &dev->ifaces[ifaceidx]; 433 usb_interface_descriptor_t *idesc; 434 char *p, *end; 435 int endpt, nendpt; 436 437 DPRINTFN(4,("usbd_fill_iface_data: ifaceidx=%d altidx=%d\n", 438 ifaceidx, altidx)); 439 idesc = usbd_find_idesc(dev->cdesc, ifaceidx, altidx); 440 if (idesc == NULL) 441 return (USBD_INVAL); 442 ifc->device = dev; 443 ifc->idesc = idesc; 444 ifc->index = ifaceidx; 445 ifc->altindex = altidx; 446 nendpt = ifc->idesc->bNumEndpoints; 447 DPRINTFN(4,("usbd_fill_iface_data: found idesc nendpt=%d\n", nendpt)); 448 if (nendpt != 0) { 449 ifc->endpoints = malloc(nendpt * sizeof(struct usbd_endpoint), 450 M_USB, M_NOWAIT); 451 if (ifc->endpoints == NULL) 452 return (USBD_NOMEM); 453 } else 454 ifc->endpoints = NULL; 455 ifc->priv = NULL; 456 p = (char *)ifc->idesc + ifc->idesc->bLength; 457 end = (char *)dev->cdesc + UGETW(dev->cdesc->wTotalLength); 458 #define ed ((usb_endpoint_descriptor_t *)p) 459 for (endpt = 0; endpt < nendpt; endpt++) { 460 DPRINTFN(10,("usbd_fill_iface_data: endpt=%d\n", endpt)); 461 for (; p < end; p += ed->bLength) { 462 ed = (usb_endpoint_descriptor_t *)p; 463 DPRINTFN(10,("usbd_fill_iface_data: p=%p end=%p " 464 "len=%d type=%d\n", 465 p, end, ed->bLength, ed->bDescriptorType)); 466 if (p + ed->bLength <= end && ed->bLength != 0 && 467 ed->bDescriptorType == UDESC_ENDPOINT) 468 goto found; 469 if (ed->bLength == 0 || 470 ed->bDescriptorType == UDESC_INTERFACE) 471 break; 472 } 473 /* passed end, or bad desc */ 474 DPRINTF(("usbd_fill_iface_data: bad descriptor(s): %s\n", 475 ed->bLength == 0 ? "0 length" : 476 ed->bDescriptorType == UDESC_INTERFACE ? "iface desc": 477 "out of data")); 478 goto bad; 479 found: 480 ifc->endpoints[endpt].edesc = ed; 481 ifc->endpoints[endpt].refcnt = 0; 482 p += ed->bLength; 483 } 484 #undef ed 485 LIST_INIT(&ifc->pipes); 486 return (USBD_NORMAL_COMPLETION); 487 488 bad: 489 if (ifc->endpoints != NULL) { 490 free(ifc->endpoints, M_USB); 491 ifc->endpoints = NULL; 492 } 493 return (USBD_INVAL); 494 } 495 496 void 497 usbd_free_iface_data(usbd_device_handle dev, int ifcno) 498 { 499 usbd_interface_handle ifc = &dev->ifaces[ifcno]; 500 if (ifc->endpoints) 501 free(ifc->endpoints, M_USB); 502 } 503 504 Static usbd_status 505 usbd_set_config(usbd_device_handle dev, int conf) 506 { 507 usb_device_request_t req; 508 509 req.bmRequestType = UT_WRITE_DEVICE; 510 req.bRequest = UR_SET_CONFIG; 511 USETW(req.wValue, conf); 512 USETW(req.wIndex, 0); 513 USETW(req.wLength, 0); 514 return (usbd_do_request(dev, &req, 0)); 515 } 516 517 usbd_status 518 usbd_set_config_no(usbd_device_handle dev, int no, int msg) 519 { 520 int index; 521 usb_config_descriptor_t cd; 522 usbd_status err; 523 524 if (no == USB_UNCONFIG_NO) 525 return (usbd_set_config_index(dev, USB_UNCONFIG_INDEX, msg)); 526 527 DPRINTFN(5,("usbd_set_config_no: %d\n", no)); 528 /* Figure out what config index to use. */ 529 for (index = 0; index < dev->ddesc.bNumConfigurations; index++) { 530 err = usbd_get_config_desc(dev, index, &cd); 531 if (err) 532 return (err); 533 if (cd.bConfigurationValue == no) 534 return (usbd_set_config_index(dev, index, msg)); 535 } 536 return (USBD_INVAL); 537 } 538 539 usbd_status 540 usbd_set_config_index(usbd_device_handle dev, int index, int msg) 541 { 542 usb_status_t ds; 543 usb_config_descriptor_t cd, *cdp; 544 usbd_status err; 545 int ifcidx, nifc, len, selfpowered, power; 546 547 DPRINTFN(5,("usbd_set_config_index: dev=%p index=%d\n", dev, index)); 548 549 /* XXX check that all interfaces are idle */ 550 if (dev->config != USB_UNCONFIG_NO) { 551 DPRINTF(("usbd_set_config_index: free old config\n")); 552 /* Free all configuration data structures. */ 553 nifc = dev->cdesc->bNumInterface; 554 for (ifcidx = 0; ifcidx < nifc; ifcidx++) 555 usbd_free_iface_data(dev, ifcidx); 556 free(dev->ifaces, M_USB); 557 free(dev->cdesc, M_USB); 558 dev->ifaces = NULL; 559 dev->cdesc = NULL; 560 dev->config = USB_UNCONFIG_NO; 561 } 562 563 if (index == USB_UNCONFIG_INDEX) { 564 /* We are unconfiguring the device, so leave unallocated. */ 565 DPRINTF(("usbd_set_config_index: set config 0\n")); 566 err = usbd_set_config(dev, USB_UNCONFIG_NO); 567 if (err) 568 DPRINTF(("usbd_set_config_index: setting config=0 " 569 "failed, error=%s\n", usbd_errstr(err))); 570 return (err); 571 } 572 573 /* Get the short descriptor. */ 574 err = usbd_get_config_desc(dev, index, &cd); 575 if (err) 576 return (err); 577 len = UGETW(cd.wTotalLength); 578 cdp = malloc(len, M_USB, M_NOWAIT); 579 if (cdp == NULL) 580 return (USBD_NOMEM); 581 /* Get the full descriptor. */ 582 err = usbd_get_desc(dev, UDESC_CONFIG, index, len, cdp); 583 if (err) 584 goto bad; 585 if (cdp->bDescriptorType != UDESC_CONFIG) { 586 DPRINTFN(-1,("usbd_set_config_index: bad desc %d\n", 587 cdp->bDescriptorType)); 588 err = USBD_INVAL; 589 goto bad; 590 } 591 592 /* Figure out if the device is self or bus powered. */ 593 selfpowered = 0; 594 if (!(dev->quirks->uq_flags & UQ_BUS_POWERED) && 595 (cdp->bmAttributes & UC_SELF_POWERED)) { 596 /* May be self powered. */ 597 if (cdp->bmAttributes & UC_BUS_POWERED) { 598 /* Must ask device. */ 599 if (dev->quirks->uq_flags & UQ_POWER_CLAIM) { 600 /* 601 * Hub claims to be self powered, but isn't. 602 * It seems that the power status can be 603 * determined by the hub characteristics. 604 */ 605 usb_hub_descriptor_t hd; 606 usb_device_request_t req; 607 req.bmRequestType = UT_READ_CLASS_DEVICE; 608 req.bRequest = UR_GET_DESCRIPTOR; 609 USETW(req.wValue, 0); 610 USETW(req.wIndex, 0); 611 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 612 err = usbd_do_request(dev, &req, &hd); 613 if (!err && 614 (UGETW(hd.wHubCharacteristics) & 615 UHD_PWR_INDIVIDUAL)) 616 selfpowered = 1; 617 DPRINTF(("usbd_set_config_index: charac=0x%04x" 618 ", error=%s\n", 619 UGETW(hd.wHubCharacteristics), 620 usbd_errstr(err))); 621 } else { 622 err = usbd_get_device_status(dev, &ds); 623 if (!err && 624 (UGETW(ds.wStatus) & UDS_SELF_POWERED)) 625 selfpowered = 1; 626 DPRINTF(("usbd_set_config_index: status=0x%04x" 627 ", error=%s\n", 628 UGETW(ds.wStatus), usbd_errstr(err))); 629 } 630 } else 631 selfpowered = 1; 632 } 633 DPRINTF(("usbd_set_config_index: (addr %d) cno=%d attr=0x%02x, " 634 "selfpowered=%d, power=%d\n", 635 cdp->bConfigurationValue, dev->address, cdp->bmAttributes, 636 selfpowered, cdp->bMaxPower * 2)); 637 638 /* Check if we have enough power. */ 639 #ifdef USB_DEBUG 640 if (dev->powersrc == NULL) { 641 DPRINTF(("usbd_set_config_index: No power source?\n")); 642 return (USBD_IOERROR); 643 } 644 #endif 645 power = cdp->bMaxPower * 2; 646 if (power > dev->powersrc->power) { 647 DPRINTF(("power exceeded %d %d\n", power,dev->powersrc->power)); 648 /* XXX print nicer message. */ 649 if (msg) 650 printf("%s: device addr %d (config %d) exceeds power " 651 "budget, %d mA > %d mA\n", 652 USBDEVNAME(dev->bus->bdev), dev->address, 653 cdp->bConfigurationValue, 654 power, dev->powersrc->power); 655 err = USBD_NO_POWER; 656 goto bad; 657 } 658 dev->power = power; 659 dev->self_powered = selfpowered; 660 661 /* Set the actual configuration value. */ 662 DPRINTF(("usbd_set_config_index: set config %d\n", 663 cdp->bConfigurationValue)); 664 err = usbd_set_config(dev, cdp->bConfigurationValue); 665 if (err) { 666 DPRINTF(("usbd_set_config_index: setting config=%d failed, " 667 "error=%s\n", 668 cdp->bConfigurationValue, usbd_errstr(err))); 669 goto bad; 670 } 671 672 /* Allocate and fill interface data. */ 673 nifc = cdp->bNumInterface; 674 dev->ifaces = malloc(nifc * sizeof(struct usbd_interface), 675 M_USB, M_NOWAIT); 676 if (dev->ifaces == NULL) { 677 err = USBD_NOMEM; 678 goto bad; 679 } 680 DPRINTFN(5,("usbd_set_config_index: dev=%p cdesc=%p\n", dev, cdp)); 681 dev->cdesc = cdp; 682 dev->config = cdp->bConfigurationValue; 683 for (ifcidx = 0; ifcidx < nifc; ifcidx++) { 684 err = usbd_fill_iface_data(dev, ifcidx, 0); 685 if (err) { 686 while (--ifcidx >= 0) 687 usbd_free_iface_data(dev, ifcidx); 688 goto bad; 689 } 690 } 691 692 return (USBD_NORMAL_COMPLETION); 693 694 bad: 695 free(cdp, M_USB); 696 return (err); 697 } 698 699 /* XXX add function for alternate settings */ 700 701 usbd_status 702 usbd_setup_pipe(usbd_device_handle dev, usbd_interface_handle iface, 703 struct usbd_endpoint *ep, int ival, usbd_pipe_handle *pipe) 704 { 705 usbd_pipe_handle p; 706 usbd_status err; 707 708 DPRINTFN(1,("usbd_setup_pipe: dev=%p iface=%p ep=%p pipe=%p\n", 709 dev, iface, ep, pipe)); 710 p = malloc(dev->bus->pipe_size, M_USB, M_NOWAIT); 711 if (p == NULL) 712 return (USBD_NOMEM); 713 p->device = dev; 714 p->iface = iface; 715 p->endpoint = ep; 716 ep->refcnt++; 717 p->refcnt = 1; 718 p->intrxfer = 0; 719 p->running = 0; 720 p->aborting = 0; 721 p->repeat = 0; 722 p->interval = ival; 723 SIMPLEQ_INIT(&p->queue); 724 usb_callout_init(p->abort_handle); 725 err = dev->bus->methods->open_pipe(p); 726 if (err) { 727 DPRINTFN(-1,("usbd_setup_pipe: endpoint=0x%x failed, error=" 728 "%s\n", 729 ep->edesc->bEndpointAddress, usbd_errstr(err))); 730 free(p, M_USB); 731 return (err); 732 } 733 /* Clear any stall and make sure DATA0 toggle will be used next. */ 734 if (UE_GET_ADDR(ep->edesc->bEndpointAddress) != USB_CONTROL_ENDPOINT) 735 usbd_clear_endpoint_stall(p); 736 *pipe = p; 737 return (USBD_NORMAL_COMPLETION); 738 } 739 740 /* Abort the device control pipe. */ 741 void 742 usbd_kill_pipe(usbd_pipe_handle pipe) 743 { 744 pipe->methods->close(pipe); 745 pipe->endpoint->refcnt--; 746 free(pipe, M_USB); 747 } 748 749 int 750 usbd_getnewaddr(usbd_bus_handle bus) 751 { 752 int addr; 753 754 for (addr = 1; addr < USB_MAX_DEVICES; addr++) 755 if (bus->devices[addr] == 0) 756 return (addr); 757 return (-1); 758 } 759 760 761 usbd_status 762 usbd_probe_and_attach(device_ptr_t parent, usbd_device_handle dev, 763 int port, int addr) 764 { 765 struct usb_attach_arg uaa; 766 usb_device_descriptor_t *dd = &dev->ddesc; 767 int found, i, confi, nifaces; 768 usbd_status err; 769 device_ptr_t dv; 770 usbd_interface_handle ifaces[256]; /* 256 is the absolute max */ 771 772 #if defined(__FreeBSD__) 773 /* 774 * XXX uaa is a static var. Not a problem as it _should_ be used only 775 * during probe and attach. Should be changed however. 776 */ 777 device_t bdev; 778 bdev = device_add_child(parent, NULL, -1, &uaa); 779 if (!bdev) { 780 printf("%s: Device creation failed\n", USBDEVNAME(dev->bus->bdev)); 781 return (USBD_INVAL); 782 } 783 device_quiet(bdev); 784 #endif 785 786 uaa.device = dev; 787 uaa.iface = NULL; 788 uaa.ifaces = NULL; 789 uaa.nifaces = 0; 790 uaa.usegeneric = 0; 791 uaa.port = port; 792 uaa.configno = UHUB_UNK_CONFIGURATION; 793 uaa.ifaceno = UHUB_UNK_INTERFACE; 794 uaa.vendor = UGETW(dd->idVendor); 795 uaa.product = UGETW(dd->idProduct); 796 uaa.release = UGETW(dd->bcdDevice); 797 798 /* First try with device specific drivers. */ 799 DPRINTF(("usbd_probe_and_attach: trying device specific drivers\n")); 800 dv = USB_DO_ATTACH(dev, bdev, parent, &uaa, usbd_print, usbd_submatch); 801 if (dv) { 802 dev->subdevs = malloc(2 * sizeof dv, M_USB, M_NOWAIT); 803 if (dev->subdevs == NULL) 804 return (USBD_NOMEM); 805 dev->subdevs[0] = dv; 806 dev->subdevs[1] = 0; 807 return (USBD_NORMAL_COMPLETION); 808 } 809 810 DPRINTF(("usbd_probe_and_attach: no device specific driver found\n")); 811 812 DPRINTF(("usbd_probe_and_attach: looping over %d configurations\n", 813 dd->bNumConfigurations)); 814 /* Next try with interface drivers. */ 815 for (confi = 0; confi < dd->bNumConfigurations; confi++) { 816 DPRINTFN(1,("usbd_probe_and_attach: trying config idx=%d\n", 817 confi)); 818 err = usbd_set_config_index(dev, confi, 1); 819 if (err) { 820 #ifdef USB_DEBUG 821 DPRINTF(("%s: port %d, set config at addr %d failed, " 822 "error=%s\n", USBDEVPTRNAME(parent), port, 823 addr, usbd_errstr(err))); 824 #else 825 printf("%s: port %d, set config at addr %d failed\n", 826 USBDEVPTRNAME(parent), port, addr); 827 #endif 828 #if defined(__FreeBSD__) 829 device_delete_child(parent, bdev); 830 #endif 831 832 return (err); 833 } 834 nifaces = dev->cdesc->bNumInterface; 835 uaa.configno = dev->cdesc->bConfigurationValue; 836 for (i = 0; i < nifaces; i++) 837 ifaces[i] = &dev->ifaces[i]; 838 uaa.ifaces = ifaces; 839 uaa.nifaces = nifaces; 840 dev->subdevs = malloc((nifaces+1) * sizeof dv, M_USB,M_NOWAIT); 841 if (dev->subdevs == NULL) { 842 #if defined(__FreeBSD__) 843 device_delete_child(parent, bdev); 844 #endif 845 return (USBD_NOMEM); 846 } 847 848 found = 0; 849 for (i = 0; i < nifaces; i++) { 850 if (ifaces[i] == NULL) 851 continue; /* interface already claimed */ 852 uaa.iface = ifaces[i]; 853 uaa.ifaceno = ifaces[i]->idesc->bInterfaceNumber; 854 dv = USB_DO_ATTACH(dev, bdev, parent, &uaa, usbd_print, 855 usbd_submatch); 856 if (dv != NULL) { 857 dev->subdevs[found++] = dv; 858 dev->subdevs[found] = 0; 859 ifaces[i] = 0; /* consumed */ 860 861 #if defined(__FreeBSD__) 862 /* create another child for the next iface */ 863 bdev = device_add_child(parent, NULL, -1,&uaa); 864 if (!bdev) { 865 printf("%s: Device creation failed\n", 866 USBDEVNAME(dev->bus->bdev)); 867 return (USBD_NORMAL_COMPLETION); 868 } 869 device_quiet(bdev); 870 #endif 871 } 872 } 873 if (found != 0) { 874 #if defined(__FreeBSD__) 875 /* remove the last created child again; it is unused */ 876 device_delete_child(parent, bdev); 877 #endif 878 return (USBD_NORMAL_COMPLETION); 879 } 880 free(dev->subdevs, M_USB); 881 dev->subdevs = 0; 882 } 883 /* No interfaces were attached in any of the configurations. */ 884 885 if (dd->bNumConfigurations > 1) /* don't change if only 1 config */ 886 usbd_set_config_index(dev, 0, 0); 887 888 DPRINTF(("usbd_probe_and_attach: no interface drivers found\n")); 889 890 /* Finally try the generic driver. */ 891 uaa.iface = NULL; 892 uaa.usegeneric = 1; 893 uaa.configno = UHUB_UNK_CONFIGURATION; 894 uaa.ifaceno = UHUB_UNK_INTERFACE; 895 dv = USB_DO_ATTACH(dev, bdev, parent, &uaa, usbd_print, usbd_submatch); 896 if (dv != NULL) { 897 dev->subdevs = malloc(2 * sizeof dv, M_USB, M_NOWAIT); 898 if (dev->subdevs == 0) 899 return (USBD_NOMEM); 900 dev->subdevs[0] = dv; 901 dev->subdevs[1] = 0; 902 return (USBD_NORMAL_COMPLETION); 903 } 904 905 /* 906 * The generic attach failed, but leave the device as it is. 907 * We just did not find any drivers, that's all. The device is 908 * fully operational and not harming anyone. 909 */ 910 DPRINTF(("usbd_probe_and_attach: generic attach failed\n")); 911 #if defined(__FreeBSD__) 912 device_delete_child(parent, bdev); 913 #endif 914 return (USBD_NORMAL_COMPLETION); 915 } 916 917 918 /* 919 * Called when a new device has been put in the powered state, 920 * but not yet in the addressed state. 921 * Get initial descriptor, set the address, get full descriptor, 922 * and attach a driver. 923 */ 924 usbd_status 925 usbd_new_device(device_ptr_t parent, usbd_bus_handle bus, int depth, 926 int lowspeed, int port, struct usbd_port *up) 927 { 928 usbd_device_handle dev; 929 usb_device_descriptor_t *dd; 930 usbd_status err; 931 int addr; 932 int i; 933 934 DPRINTF(("usbd_new_device bus=%p port=%d depth=%d lowspeed=%d\n", 935 bus, port, depth, lowspeed)); 936 addr = usbd_getnewaddr(bus); 937 if (addr < 0) { 938 printf("%s: No free USB addresses, new device ignored.\n", 939 USBDEVNAME(bus->bdev)); 940 return (USBD_NO_ADDR); 941 } 942 943 dev = malloc(sizeof *dev, M_USB, M_NOWAIT); 944 if (dev == NULL) 945 return (USBD_NOMEM); 946 memset(dev, 0, sizeof(*dev)); 947 948 dev->bus = bus; 949 950 /* Set up default endpoint handle. */ 951 dev->def_ep.edesc = &dev->def_ep_desc; 952 953 /* Set up default endpoint descriptor. */ 954 dev->def_ep_desc.bLength = USB_ENDPOINT_DESCRIPTOR_SIZE; 955 dev->def_ep_desc.bDescriptorType = UDESC_ENDPOINT; 956 dev->def_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT; 957 dev->def_ep_desc.bmAttributes = UE_CONTROL; 958 USETW(dev->def_ep_desc.wMaxPacketSize, USB_MAX_IPACKET); 959 dev->def_ep_desc.bInterval = 0; 960 961 dev->quirks = &usbd_no_quirk; 962 dev->address = USB_START_ADDR; 963 dev->ddesc.bMaxPacketSize = 0; 964 dev->lowspeed = lowspeed != 0; 965 dev->depth = depth; 966 dev->powersrc = up; 967 dev->langid = USBD_NOLANG; 968 dev->cookie.cookie = ++usb_cookie_no; 969 970 /* Establish the default pipe. */ 971 err = usbd_setup_pipe(dev, 0, &dev->def_ep, USBD_DEFAULT_INTERVAL, 972 &dev->default_pipe); 973 if (err) { 974 usbd_remove_device(dev, up); 975 return (err); 976 } 977 978 up->device = dev; 979 dd = &dev->ddesc; 980 /* Try a few times in case the device is slow (i.e. outside specs.) */ 981 for (i = 0; i < 3; i++) { 982 /* Get the first 8 bytes of the device descriptor. */ 983 err = usbd_get_desc(dev, UDESC_DEVICE, 0, USB_MAX_IPACKET, dd); 984 if (!err) 985 break; 986 usbd_delay_ms(dev, 200); 987 } 988 if (err) { 989 DPRINTFN(-1, ("usbd_new_device: addr=%d, getting first desc " 990 "failed\n", addr)); 991 usbd_remove_device(dev, up); 992 return (err); 993 } 994 995 DPRINTF(("usbd_new_device: adding unit addr=%d, rev=%02x, class=%d, " 996 "subclass=%d, protocol=%d, maxpacket=%d, len=%d, ls=%d\n", 997 addr,UGETW(dd->bcdUSB), dd->bDeviceClass, dd->bDeviceSubClass, 998 dd->bDeviceProtocol, dd->bMaxPacketSize, dd->bLength, 999 dev->lowspeed)); 1000 1001 if (dd->bDescriptorType != UDESC_DEVICE) { 1002 /* Illegal device descriptor */ 1003 DPRINTFN(-1,("usbd_new_device: illegal descriptor %d\n", 1004 dd->bDescriptorType)); 1005 usbd_remove_device(dev, up); 1006 return (USBD_INVAL); 1007 } 1008 1009 if (dd->bLength < USB_DEVICE_DESCRIPTOR_SIZE) { 1010 DPRINTFN(-1,("usbd_new_device: bad length %d\n", dd->bLength)); 1011 usbd_remove_device(dev, up); 1012 return (USBD_INVAL); 1013 } 1014 1015 USETW(dev->def_ep_desc.wMaxPacketSize, dd->bMaxPacketSize); 1016 1017 err = usbd_reload_device_desc(dev); 1018 if (err) { 1019 DPRINTFN(-1, ("usbd_new_device: addr=%d, getting full desc " 1020 "failed\n", addr)); 1021 usbd_remove_device(dev, up); 1022 return (err); 1023 } 1024 1025 /* Set the address */ 1026 err = usbd_set_address(dev, addr); 1027 DPRINTFN(5,("usbd_new_device: setting device address=%d\n", addr)); 1028 if (err) { 1029 DPRINTFN(-1,("usb_new_device: set address %d failed\n", addr)); 1030 err = USBD_SET_ADDR_FAILED; 1031 usbd_remove_device(dev, up); 1032 return (err); 1033 } 1034 /* Allow device time to set new address */ 1035 usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE); 1036 1037 dev->address = addr; /* New device address now */ 1038 bus->devices[addr] = dev; 1039 1040 /* Assume 100mA bus powered for now. Changed when configured. */ 1041 dev->power = USB_MIN_POWER; 1042 dev->self_powered = 0; 1043 1044 DPRINTF(("usbd_new_device: new dev (addr %d), dev=%p, parent=%p\n", 1045 addr, dev, parent)); 1046 1047 usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev); 1048 1049 err = usbd_probe_and_attach(parent, dev, port, addr); 1050 if (err) { 1051 usbd_remove_device(dev, up); 1052 return (err); 1053 } 1054 1055 return (USBD_NORMAL_COMPLETION); 1056 } 1057 1058 usbd_status 1059 usbd_reload_device_desc(usbd_device_handle dev) 1060 { 1061 usbd_status err; 1062 1063 /* Get the full device descriptor. */ 1064 err = usbd_get_device_desc(dev, &dev->ddesc); 1065 if (err) 1066 return (err); 1067 1068 /* Figure out what's wrong with this device. */ 1069 dev->quirks = usbd_find_quirk(&dev->ddesc); 1070 1071 return (USBD_NORMAL_COMPLETION); 1072 } 1073 1074 void 1075 usbd_remove_device(usbd_device_handle dev, struct usbd_port *up) 1076 { 1077 DPRINTF(("usbd_remove_device: %p\n", dev)); 1078 1079 if (dev->default_pipe != NULL) 1080 usbd_kill_pipe(dev->default_pipe); 1081 up->device = 0; 1082 dev->bus->devices[dev->address] = 0; 1083 1084 free(dev, M_USB); 1085 } 1086 1087 #if defined(__NetBSD__) || defined(__OpenBSD__) 1088 int 1089 usbd_print(void *aux, const char *pnp) 1090 { 1091 struct usb_attach_arg *uaa = aux; 1092 char devinfo[1024]; 1093 1094 DPRINTFN(15, ("usbd_print dev=%p\n", uaa->device)); 1095 if (pnp) { 1096 if (!uaa->usegeneric) 1097 return (QUIET); 1098 usbd_devinfo(uaa->device, 1, devinfo); 1099 printf("%s, %s", devinfo, pnp); 1100 } 1101 if (uaa->port != 0) 1102 printf(" port %d", uaa->port); 1103 if (uaa->configno != UHUB_UNK_CONFIGURATION) 1104 printf(" configuration %d", uaa->configno); 1105 if (uaa->ifaceno != UHUB_UNK_INTERFACE) 1106 printf(" interface %d", uaa->ifaceno); 1107 #if 0 1108 /* 1109 * It gets very crowded with these locators on the attach line. 1110 * They are not really needed since they are printed in the clear 1111 * by each driver. 1112 */ 1113 if (uaa->vendor != UHUB_UNK_VENDOR) 1114 printf(" vendor 0x%04x", uaa->vendor); 1115 if (uaa->product != UHUB_UNK_PRODUCT) 1116 printf(" product 0x%04x", uaa->product); 1117 if (uaa->release != UHUB_UNK_RELEASE) 1118 printf(" release 0x%04x", uaa->release); 1119 #endif 1120 return (UNCONF); 1121 } 1122 1123 #if defined(__NetBSD__) 1124 int 1125 usbd_submatch(struct device *parent, struct cfdata *cf, void *aux) 1126 { 1127 #elif defined(__OpenBSD__) 1128 int 1129 usbd_submatch(struct device *parent, void *match, void *aux) 1130 { 1131 struct cfdata *cf = match; 1132 #endif 1133 struct usb_attach_arg *uaa = aux; 1134 1135 DPRINTFN(5,("usbd_submatch port=%d,%d configno=%d,%d " 1136 "ifaceno=%d,%d vendor=%d,%d product=%d,%d release=%d,%d\n", 1137 uaa->port, cf->uhubcf_port, 1138 uaa->configno, cf->uhubcf_configuration, 1139 uaa->ifaceno, cf->uhubcf_interface, 1140 uaa->vendor, cf->uhubcf_vendor, 1141 uaa->product, cf->uhubcf_product, 1142 uaa->release, cf->uhubcf_release)); 1143 if (uaa->port != 0 && /* root hub has port 0, it should match */ 1144 ((uaa->port != 0 && 1145 cf->uhubcf_port != UHUB_UNK_PORT && 1146 cf->uhubcf_port != uaa->port) || 1147 (uaa->configno != UHUB_UNK_CONFIGURATION && 1148 cf->uhubcf_configuration != UHUB_UNK_CONFIGURATION && 1149 cf->uhubcf_configuration != uaa->configno) || 1150 (uaa->ifaceno != UHUB_UNK_INTERFACE && 1151 cf->uhubcf_interface != UHUB_UNK_INTERFACE && 1152 cf->uhubcf_interface != uaa->ifaceno) || 1153 (uaa->vendor != UHUB_UNK_VENDOR && 1154 cf->uhubcf_vendor != UHUB_UNK_VENDOR && 1155 cf->uhubcf_vendor != uaa->vendor) || 1156 (uaa->product != UHUB_UNK_PRODUCT && 1157 cf->uhubcf_product != UHUB_UNK_PRODUCT && 1158 cf->uhubcf_product != uaa->product) || 1159 (uaa->release != UHUB_UNK_RELEASE && 1160 cf->uhubcf_release != UHUB_UNK_RELEASE && 1161 cf->uhubcf_release != uaa->release) 1162 ) 1163 ) 1164 return 0; 1165 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 1166 } 1167 1168 #endif 1169 1170 void 1171 usbd_fill_deviceinfo(usbd_device_handle dev, struct usb_device_info *di, 1172 int usedev) 1173 { 1174 struct usbd_port *p; 1175 int i, err, s; 1176 1177 di->bus = USBDEVUNIT(dev->bus->bdev); 1178 di->addr = dev->address; 1179 di->cookie = dev->cookie; 1180 usbd_devinfo_vp(dev, di->vendor, di->product, usedev); 1181 usbd_printBCD(di->release, UGETW(dev->ddesc.bcdDevice)); 1182 di->vendorNo = UGETW(dev->ddesc.idVendor); 1183 di->productNo = UGETW(dev->ddesc.idProduct); 1184 di->releaseNo = UGETW(dev->ddesc.bcdDevice); 1185 di->class = dev->ddesc.bDeviceClass; 1186 di->subclass = dev->ddesc.bDeviceSubClass; 1187 di->protocol = dev->ddesc.bDeviceProtocol; 1188 di->config = dev->config; 1189 di->power = dev->self_powered ? 0 : dev->power; 1190 di->lowspeed = dev->lowspeed; 1191 1192 if (dev->subdevs != NULL) { 1193 for (i = 0; dev->subdevs[i] && 1194 i < USB_MAX_DEVNAMES; i++) { 1195 strncpy(di->devnames[i], USBDEVPTRNAME(dev->subdevs[i]), 1196 USB_MAX_DEVNAMELEN); 1197 di->devnames[i][USB_MAX_DEVNAMELEN-1] = '\0'; 1198 } 1199 } else { 1200 i = 0; 1201 } 1202 for (/*i is set */; i < USB_MAX_DEVNAMES; i++) 1203 di->devnames[i][0] = 0; /* empty */ 1204 1205 if (dev->hub) { 1206 for (i = 0; 1207 i < sizeof(di->ports) / sizeof(di->ports[0]) && 1208 i < dev->hub->hubdesc.bNbrPorts; 1209 i++) { 1210 p = &dev->hub->ports[i]; 1211 if (p->device) 1212 err = p->device->address; 1213 else { 1214 s = UGETW(p->status.wPortStatus); 1215 if (s & UPS_PORT_ENABLED) 1216 err = USB_PORT_ENABLED; 1217 else if (s & UPS_SUSPEND) 1218 err = USB_PORT_SUSPENDED; 1219 else if (s & UPS_PORT_POWER) 1220 err = USB_PORT_POWERED; 1221 else 1222 err = USB_PORT_DISABLED; 1223 } 1224 di->ports[i] = err; 1225 } 1226 di->nports = dev->hub->hubdesc.bNbrPorts; 1227 } else 1228 di->nports = 0; 1229 } 1230 1231 void 1232 usb_free_device(usbd_device_handle dev) 1233 { 1234 int ifcidx, nifc; 1235 1236 if (dev->default_pipe != NULL) 1237 usbd_kill_pipe(dev->default_pipe); 1238 if (dev->ifaces != NULL) { 1239 nifc = dev->cdesc->bNumInterface; 1240 for (ifcidx = 0; ifcidx < nifc; ifcidx++) 1241 usbd_free_iface_data(dev, ifcidx); 1242 free(dev->ifaces, M_USB); 1243 } 1244 if (dev->cdesc != NULL) 1245 free(dev->cdesc, M_USB); 1246 if (dev->subdevs != NULL) 1247 free(dev->subdevs, M_USB); 1248 free(dev, M_USB); 1249 } 1250 1251 /* 1252 * The general mechanism for detaching drivers works as follows: Each 1253 * driver is responsible for maintaining a reference count on the 1254 * number of outstanding references to its softc (e.g. from 1255 * processing hanging in a read or write). The detach method of the 1256 * driver decrements this counter and flags in the softc that the 1257 * driver is dying and then wakes any sleepers. It then sleeps on the 1258 * softc. Each place that can sleep must maintain the reference 1259 * count. When the reference count drops to -1 (0 is the normal value 1260 * of the reference count) the a wakeup on the softc is performed 1261 * signaling to the detach waiter that all references are gone. 1262 */ 1263 1264 /* 1265 * Called from process context when we discover that a port has 1266 * been disconnected. 1267 */ 1268 void 1269 usb_disconnect_port(struct usbd_port *up, device_ptr_t parent) 1270 { 1271 usbd_device_handle dev = up->device; 1272 char *hubname = USBDEVPTRNAME(parent); 1273 int i; 1274 1275 DPRINTFN(3,("uhub_disconnect: up=%p dev=%p port=%d\n", 1276 up, dev, up->portno)); 1277 1278 #ifdef DIAGNOSTIC 1279 if (dev == NULL) { 1280 printf("usb_disconnect_port: no device\n"); 1281 return; 1282 } 1283 #endif 1284 1285 if (dev->subdevs != NULL) { 1286 DPRINTFN(3,("usb_disconnect_port: disconnect subdevs\n")); 1287 for (i = 0; dev->subdevs[i]; i++) { 1288 printf("%s: at %s", USBDEVPTRNAME(dev->subdevs[i]), 1289 hubname); 1290 if (up->portno != 0) 1291 printf(" port %d", up->portno); 1292 printf(" (addr %d) disconnected\n", dev->address); 1293 #if defined(__NetBSD__) || defined(__OpenBSD__) 1294 config_detach(dev->subdevs[i], DETACH_FORCE); 1295 #elif defined(__FreeBSD__) 1296 device_delete_child(device_get_parent(dev->subdevs[i]), 1297 dev->subdevs[i]); 1298 #endif 1299 1300 } 1301 } 1302 1303 usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev); 1304 dev->bus->devices[dev->address] = NULL; 1305 up->device = NULL; 1306 usb_free_device(dev); 1307 } 1308 1309 #ifdef __OpenBSD__ 1310 void *usb_realloc(void *p, u_int size, int pool, int flags) 1311 { 1312 void *q; 1313 1314 q = malloc(size, pool, flags); 1315 if (q == NULL) 1316 return (NULL); 1317 bcopy(p, q, size); 1318 free(p, pool); 1319 return (q); 1320 } 1321 #endif 1322