uhub.c revision 1.126.2.8
1 /* $NetBSD: uhub.c,v 1.126.2.8 2015/03/21 11:33:37 skrll Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 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 /* 35 * USB spec: http://www.usb.org/developers/docs/usbspec.zip 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: uhub.c,v 1.126.2.8 2015/03/21 11:33:37 skrll Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/kmem.h> 45 #include <sys/device.h> 46 #include <sys/proc.h> 47 48 #include <sys/bus.h> 49 50 #include <dev/usb/usb.h> 51 #include <dev/usb/usbdi.h> 52 #include <dev/usb/usbdi_util.h> 53 #include <dev/usb/usbdivar.h> 54 55 #ifdef UHUB_DEBUG 56 #define DPRINTF(x) if (uhubdebug) printf x 57 #define DPRINTFN(n,x) if (uhubdebug>(n)) printf x 58 int uhubdebug = 0; 59 #else 60 #define DPRINTF(x) 61 #define DPRINTFN(n,x) 62 #endif 63 64 struct uhub_softc { 65 device_t sc_dev; /* base device */ 66 struct usbd_device * sc_hub; /* USB device */ 67 int sc_proto; /* device protocol */ 68 struct usbd_pipe * sc_ipipe; /* interrupt pipe */ 69 70 /* XXX second buffer needed because we can't suspend pipes yet */ 71 uint8_t *sc_statusbuf; 72 uint8_t *sc_status; 73 size_t sc_statuslen; 74 int sc_explorepending; 75 int sc_isehciroothub; /* see comment in uhub_intr() */ 76 77 u_char sc_running; 78 }; 79 80 #define UHUB_IS_HIGH_SPEED(sc) ((sc)->sc_proto != UDPROTO_FSHUB) 81 #define UHUB_IS_SINGLE_TT(sc) ((sc)->sc_proto == UDPROTO_HSHUBSTT) 82 83 #define PORTSTAT_ISSET(sc, port) \ 84 ((sc)->sc_status[(port) / 8] & (1 << ((port) % 8))) 85 86 Static usbd_status uhub_explore(struct usbd_device *); 87 Static void uhub_intr(struct usbd_xfer *, void *, usbd_status); 88 89 90 /* 91 * We need two attachment points: 92 * hub to usb and hub to hub 93 * Every other driver only connects to hubs 94 */ 95 96 int uhub_match(device_t, cfdata_t, void *); 97 void uhub_attach(device_t, device_t, void *); 98 int uhub_rescan(device_t, const char *, const int *); 99 void uhub_childdet(device_t, device_t); 100 int uhub_detach(device_t, int); 101 extern struct cfdriver uhub_cd; 102 CFATTACH_DECL3_NEW(uhub, sizeof(struct uhub_softc), uhub_match, 103 uhub_attach, uhub_detach, NULL, uhub_rescan, uhub_childdet, 104 DVF_DETACH_SHUTDOWN); 105 CFATTACH_DECL2_NEW(uroothub, sizeof(struct uhub_softc), uhub_match, 106 uhub_attach, uhub_detach, NULL, uhub_rescan, uhub_childdet); 107 108 /* 109 * Setting this to 1 makes sure than an uhub attaches even at higher 110 * priority than ugen when ugen_override is set to 1. This allows to 111 * probe the whole USB bus and attach functions with ugen. 112 */ 113 int uhub_ubermatch = 0; 114 115 int 116 uhub_match(device_t parent, cfdata_t match, void *aux) 117 { 118 struct usb_attach_arg *uaa = aux; 119 int matchvalue; 120 121 if (uhub_ubermatch) 122 matchvalue = UMATCH_HIGHEST+1; 123 else 124 matchvalue = UMATCH_DEVCLASS_DEVSUBCLASS; 125 126 DPRINTFN(5,("uhub_match, uaa=%p\n", uaa)); 127 /* 128 * The subclass for hubs seems to be 0 for some and 1 for others, 129 * so we just ignore the subclass. 130 */ 131 if (uaa->uaa_class == UDCLASS_HUB) 132 return matchvalue; 133 return UMATCH_NONE; 134 } 135 136 void 137 uhub_attach(device_t parent, device_t self, void *aux) 138 { 139 struct uhub_softc *sc = device_private(self); 140 struct usb_attach_arg *uaa = aux; 141 struct usbd_device *dev = uaa->uaa_device; 142 char *devinfop; 143 usbd_status err; 144 struct usbd_hub *hub = NULL; 145 usb_device_request_t req; 146 usb_hub_descriptor_t hubdesc; 147 int p, port, nports, nremov, pwrdly; 148 struct usbd_interface *iface; 149 usb_endpoint_descriptor_t *ed; 150 #if 0 /* notyet */ 151 struct usbd_tt *tts = NULL; 152 #endif 153 154 DPRINTFN(1,("uhub_attach\n")); 155 sc->sc_dev = self; 156 sc->sc_hub = dev; 157 sc->sc_proto = uaa->uaa_proto; 158 159 devinfop = usbd_devinfo_alloc(dev, 1); 160 aprint_naive("\n"); 161 aprint_normal(": %s\n", devinfop); 162 usbd_devinfo_free(devinfop); 163 164 if (dev->ud_depth > 0 && UHUB_IS_HIGH_SPEED(sc)) { 165 aprint_normal_dev(self, "%s transaction translator%s\n", 166 UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple", 167 UHUB_IS_SINGLE_TT(sc) ? "" : "s"); 168 } 169 170 err = usbd_set_config_index(dev, 0, 1); 171 if (err) { 172 DPRINTF(("%s: configuration failed, error=%s\n", 173 device_xname(sc->sc_dev), usbd_errstr(err))); 174 return; 175 } 176 177 if (dev->ud_depth > USB_HUB_MAX_DEPTH) { 178 aprint_error_dev(self, 179 "hub depth (%d) exceeded, hub ignored\n", 180 USB_HUB_MAX_DEPTH); 181 return; 182 } 183 184 /* Get hub descriptor. */ 185 req.bmRequestType = UT_READ_CLASS_DEVICE; 186 req.bRequest = UR_GET_DESCRIPTOR; 187 USETW2(req.wValue, UDESC_HUB, 0); 188 USETW(req.wIndex, 0); 189 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 190 DPRINTFN(1,("%s: getting hub descriptor\n", __func__)); 191 err = usbd_do_request(dev, &req, &hubdesc); 192 nports = hubdesc.bNbrPorts; 193 if (!err && nports > 7) { 194 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8); 195 err = usbd_do_request(dev, &req, &hubdesc); 196 } 197 if (err) { 198 DPRINTF(("%s: getting hub descriptor failed, error=%s\n", 199 device_xname(sc->sc_dev), usbd_errstr(err))); 200 return; 201 } 202 203 for (nremov = 0, port = 1; port <= nports; port++) 204 if (!UHD_NOT_REMOV(&hubdesc, port)) 205 nremov++; 206 aprint_verbose_dev(self, "%d port%s with %d removable, %s powered\n", 207 nports, nports != 1 ? "s" : "", nremov, 208 dev->ud_selfpowered ? "self" : "bus"); 209 210 if (nports == 0) { 211 aprint_debug_dev(self, "no ports, hub ignored\n"); 212 goto bad; 213 } 214 215 hub = kmem_alloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port), 216 KM_SLEEP); 217 if (hub == NULL) 218 return; 219 dev->ud_hub = hub; 220 dev->ud_hub->uh_hubsoftc = sc; 221 hub->uh_explore = uhub_explore; 222 hub->uh_hubdesc = hubdesc; 223 224 /* Set up interrupt pipe. */ 225 err = usbd_device2interface_handle(dev, 0, &iface); 226 if (err) { 227 aprint_error_dev(self, "no interface handle\n"); 228 goto bad; 229 } 230 231 if (UHUB_IS_HIGH_SPEED(sc) && !UHUB_IS_SINGLE_TT(sc)) { 232 err = usbd_set_interface(iface, 1); 233 if (err) 234 aprint_error_dev(self, "can't enable multiple TTs\n"); 235 } 236 237 ed = usbd_interface2endpoint_descriptor(iface, 0); 238 if (ed == NULL) { 239 aprint_error_dev(self, "no endpoint descriptor\n"); 240 goto bad; 241 } 242 if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 243 aprint_error_dev(self, "bad interrupt endpoint\n"); 244 goto bad; 245 } 246 247 sc->sc_statuslen = (nports + 1 + 7) / 8; 248 sc->sc_statusbuf = kmem_alloc(sc->sc_statuslen, KM_SLEEP); 249 if (!sc->sc_statusbuf) 250 goto bad; 251 sc->sc_status = kmem_alloc(sc->sc_statuslen, KM_SLEEP); 252 if (!sc->sc_status) 253 goto bad; 254 if (device_is_a(device_parent(device_parent(sc->sc_dev)), "ehci")) 255 sc->sc_isehciroothub = 1; 256 257 /* force initial scan */ 258 memset(sc->sc_status, 0xff, sc->sc_statuslen); 259 sc->sc_explorepending = 1; 260 261 err = usbd_open_pipe_intr(iface, ed->bEndpointAddress, 262 USBD_SHORT_XFER_OK|USBD_MPSAFE, &sc->sc_ipipe, sc, 263 sc->sc_statusbuf, sc->sc_statuslen, 264 uhub_intr, USBD_DEFAULT_INTERVAL); 265 if (err) { 266 aprint_error_dev(self, "cannot open interrupt pipe\n"); 267 goto bad; 268 } 269 270 /* Wait with power off for a while. */ 271 usbd_delay_ms(dev, USB_POWER_DOWN_TIME); 272 273 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, sc->sc_dev); 274 275 /* 276 * To have the best chance of success we do things in the exact same 277 * order as Windows 98. This should not be necessary, but some 278 * devices do not follow the USB specs to the letter. 279 * 280 * These are the events on the bus when a hub is attached: 281 * Get device and config descriptors (see attach code) 282 * Get hub descriptor (see above) 283 * For all ports 284 * turn on power 285 * wait for power to become stable 286 * (all below happens in explore code) 287 * For all ports 288 * clear C_PORT_CONNECTION 289 * For all ports 290 * get port status 291 * if device connected 292 * wait 100 ms 293 * turn on reset 294 * wait 295 * clear C_PORT_RESET 296 * get port status 297 * proceed with device attachment 298 */ 299 300 #if 0 301 if (UHUB_IS_HIGH_SPEED(sc) && nports > 0) { 302 tts = kmem_alloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) * 303 sizeof (struct usbd_tt), KM_SLEEP); 304 if (!tts) 305 goto bad; 306 } 307 #endif 308 /* Set up data structures */ 309 for (p = 0; p < nports; p++) { 310 struct usbd_port *up = &hub->uh_ports[p]; 311 up->up_dev = NULL; 312 up->up_parent = dev; 313 up->up_portno = p+1; 314 if (dev->ud_selfpowered) 315 /* Self powered hub, give ports maximum current. */ 316 up->up_power = USB_MAX_POWER; 317 else 318 up->up_power = USB_MIN_POWER; 319 up->up_restartcnt = 0; 320 up->up_reattach = 0; 321 #if 0 322 if (UHUB_IS_HIGH_SPEED(sc)) { 323 up->tt = &tts[UHUB_IS_SINGLE_TT(sc) ? 0 : p]; 324 up->tt->hub = hub; 325 } else { 326 up->tt = NULL; 327 } 328 #endif 329 } 330 331 /* XXX should check for none, individual, or ganged power? */ 332 333 pwrdly = dev->ud_hub->uh_hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR 334 + USB_EXTRA_POWER_UP_TIME; 335 for (port = 1; port <= nports; port++) { 336 /* Turn the power on. */ 337 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER); 338 if (err) 339 aprint_error_dev(self, "port %d power on failed, %s\n", 340 port, usbd_errstr(err)); 341 DPRINTF(("usb_init_port: turn on port %d power\n", port)); 342 } 343 344 /* Wait for stable power if we are not a root hub */ 345 if (dev->ud_powersrc->up_parent != NULL) 346 usbd_delay_ms(dev, pwrdly); 347 348 /* The usual exploration will finish the setup. */ 349 350 sc->sc_running = 1; 351 352 if (!pmf_device_register(self, NULL, NULL)) 353 aprint_error_dev(self, "couldn't establish power handler\n"); 354 355 return; 356 357 bad: 358 if (sc->sc_status) 359 kmem_free(sc->sc_status, sc->sc_statuslen); 360 if (sc->sc_statusbuf) 361 kmem_free(sc->sc_statusbuf, sc->sc_statuslen); 362 if (hub) 363 kmem_free(hub, 364 sizeof(*hub) + (nports-1) * sizeof(struct usbd_port)); 365 dev->ud_hub = NULL; 366 return; 367 } 368 369 usbd_status 370 uhub_explore(struct usbd_device *dev) 371 { 372 usb_hub_descriptor_t *hd = &dev->ud_hub->uh_hubdesc; 373 struct uhub_softc *sc = dev->ud_hub->uh_hubsoftc; 374 struct usbd_port *up; 375 usbd_status err; 376 int speed; 377 int port; 378 int change, status, reconnect; 379 380 DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->ud_addr)); 381 382 if (!sc->sc_running) 383 return USBD_NOT_STARTED; 384 385 /* Ignore hubs that are too deep. */ 386 if (dev->ud_depth > USB_HUB_MAX_DEPTH) 387 return USBD_TOO_DEEP; 388 389 if (PORTSTAT_ISSET(sc, 0)) { /* hub status change */ 390 usb_hub_status_t hs; 391 392 err = usbd_get_hub_status(dev, &hs); 393 if (err) { 394 DPRINTF(("%s: get hub status failed, err=%d\n", 395 device_xname(sc->sc_dev), err)); 396 } else { 397 /* just acknowledge */ 398 status = UGETW(hs.wHubStatus); 399 change = UGETW(hs.wHubChange); 400 if (change & UHS_LOCAL_POWER) 401 usbd_clear_hub_feature(dev, 402 UHF_C_HUB_LOCAL_POWER); 403 if (change & UHS_OVER_CURRENT) 404 usbd_clear_hub_feature(dev, 405 UHF_C_HUB_OVER_CURRENT); 406 } 407 } 408 409 for (port = 1; port <= hd->bNbrPorts; port++) { 410 up = &dev->ud_hub->uh_ports[port-1]; 411 412 /* reattach is needed after firmware upload */ 413 reconnect = up->up_reattach; 414 up->up_reattach = 0; 415 416 status = change = 0; 417 418 /* don't check if no change summary notification */ 419 if (PORTSTAT_ISSET(sc, port) || reconnect) { 420 err = usbd_get_port_status(dev, port, &up->up_status); 421 if (err) { 422 DPRINTF(("uhub_explore: get port stat failed, " 423 "error=%s\n", usbd_errstr(err))); 424 continue; 425 } 426 status = UGETW(up->up_status.wPortStatus); 427 change = UGETW(up->up_status.wPortChange); 428 #if 0 429 printf("%s port %d: s/c=%x/%x\n", 430 device_xname(sc->sc_dev), port, status, change); 431 #endif 432 } 433 if (!change && !reconnect) { 434 /* No status change, just do recursive explore. */ 435 if (up->up_dev != NULL && up->up_dev->ud_hub != NULL) 436 up->up_dev->ud_hub->uh_explore(up->up_dev); 437 continue; 438 } 439 440 if (change & UPS_C_PORT_ENABLED) { 441 DPRINTF(("uhub_explore: C_PORT_ENABLED\n")); 442 usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE); 443 if (change & UPS_C_CONNECT_STATUS) { 444 /* Ignore the port error if the device 445 vanished. */ 446 } else if (status & UPS_PORT_ENABLED) { 447 aprint_error_dev(sc->sc_dev, 448 "illegal enable change, port %d\n", port); 449 } else { 450 /* Port error condition. */ 451 if (up->up_restartcnt) /* no message first time */ 452 aprint_error_dev(sc->sc_dev, 453 "port error, restarting port %d\n", 454 port); 455 456 if (up->up_restartcnt++ < USBD_RESTART_MAX) 457 goto disco; 458 else 459 aprint_error_dev(sc->sc_dev, 460 "port error, giving up port %d\n", 461 port); 462 } 463 } 464 465 /* XXX handle overcurrent and resume events! */ 466 467 if (!reconnect && !(change & UPS_C_CONNECT_STATUS)) { 468 /* No status change, just do recursive explore. */ 469 if (up->up_dev != NULL && up->up_dev->ud_hub != NULL) 470 up->up_dev->ud_hub->uh_explore(up->up_dev); 471 continue; 472 } 473 474 /* We have a connect status change, handle it. */ 475 476 DPRINTF(("uhub_explore: status change hub=%d port=%d\n", 477 dev->ud_addr, port)); 478 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION); 479 /* 480 * If there is already a device on the port the change status 481 * must mean that is has disconnected. Looking at the 482 * current connect status is not enough to figure this out 483 * since a new unit may have been connected before we handle 484 * the disconnect. 485 */ 486 disco: 487 if (up->up_dev != NULL) { 488 /* Disconnected */ 489 DPRINTF(("uhub_explore: device addr=%d disappeared " 490 "on port %d\n", up->up_dev->ud_addr, port)); 491 usb_disconnect_port(up, sc->sc_dev, DETACH_FORCE); 492 usbd_clear_port_feature(dev, port, 493 UHF_C_PORT_CONNECTION); 494 } 495 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 496 /* Nothing connected, just ignore it. */ 497 DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT" 498 "_STATUS\n", port)); 499 continue; 500 } 501 502 /* Connected */ 503 504 if (!(status & UPS_PORT_POWER)) 505 aprint_normal_dev(sc->sc_dev, 506 "strange, connected port %d has no power\n", port); 507 508 /* Wait for maximum device power up time. */ 509 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY); 510 511 /* Reset port, which implies enabling it. */ 512 if (usbd_reset_port(dev, port, &up->up_status)) { 513 aprint_error_dev(sc->sc_dev, 514 "port %d reset failed\n", port); 515 continue; 516 } 517 /* Get port status again, it might have changed during reset */ 518 err = usbd_get_port_status(dev, port, &up->up_status); 519 if (err) { 520 DPRINTF(("uhub_explore: get port status failed, " 521 "error=%s\n", usbd_errstr(err))); 522 continue; 523 } 524 status = UGETW(up->up_status.wPortStatus); 525 change = UGETW(up->up_status.wPortChange); 526 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 527 /* Nothing connected, just ignore it. */ 528 #ifdef DIAGNOSTIC 529 aprint_debug_dev(sc->sc_dev, 530 "port %d, device disappeared after reset\n", port); 531 #endif 532 continue; 533 } 534 if (!(status & UPS_PORT_ENABLED)) { 535 /* Not allowed send/receive packet. */ 536 #ifdef DIAGNOSTIC 537 printf("%s: port %d, device not enabled\n", 538 device_xname(sc->sc_dev), port); 539 #endif 540 continue; 541 } 542 543 /* Figure out device speed */ 544 #if 0 545 if (status & UPS_SUPER_SPEED) 546 speed = USB_SPEED_SUPER; 547 else 548 #endif 549 if (status & UPS_HIGH_SPEED) 550 speed = USB_SPEED_HIGH; 551 else if (status & UPS_LOW_SPEED) 552 speed = USB_SPEED_LOW; 553 else 554 speed = USB_SPEED_FULL; 555 /* Get device info and set its address. */ 556 err = usbd_new_device(sc->sc_dev, dev->ud_bus, 557 dev->ud_depth + 1, speed, port, up); 558 /* XXX retry a few times? */ 559 if (err) { 560 DPRINTFN(-1,("uhub_explore: usbd_new_device failed, " 561 "error=%s\n", usbd_errstr(err))); 562 /* Avoid addressing problems by disabling. */ 563 /* usbd_reset_port(dev, port, &up->status); */ 564 565 /* 566 * The unit refused to accept a new address, or had 567 * some other serious problem. Since we cannot leave 568 * at 0 we have to disable the port instead. 569 */ 570 aprint_error_dev(sc->sc_dev, 571 "device problem, disabling port %d\n", port); 572 usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE); 573 } else { 574 /* The port set up succeeded, reset error count. */ 575 up->up_restartcnt = 0; 576 577 if (up->up_dev->ud_hub) 578 up->up_dev->ud_hub->uh_explore(up->up_dev); 579 } 580 } 581 /* enable status change notifications again */ 582 if (!sc->sc_isehciroothub) 583 memset(sc->sc_status, 0, sc->sc_statuslen); 584 sc->sc_explorepending = 0; 585 return USBD_NORMAL_COMPLETION; 586 } 587 588 /* 589 * Called from process context when the hub is gone. 590 * Detach all devices on active ports. 591 */ 592 int 593 uhub_detach(device_t self, int flags) 594 { 595 struct uhub_softc *sc = device_private(self); 596 struct usbd_hub *hub = sc->sc_hub->ud_hub; 597 struct usbd_port *rup; 598 int nports, port, rc; 599 600 DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags)); 601 602 if (hub == NULL) /* Must be partially working */ 603 return 0; 604 605 /* XXXSMP usb */ 606 KERNEL_LOCK(1, curlwp); 607 608 nports = hub->uh_hubdesc.bNbrPorts; 609 for(port = 0; port < nports; port++) { 610 rup = &hub->uh_ports[port]; 611 if (rup->up_dev == NULL) 612 continue; 613 if ((rc = usb_disconnect_port(rup, self, flags)) != 0) { 614 /* XXXSMP usb */ 615 KERNEL_UNLOCK_ONE(curlwp); 616 617 return rc; 618 } 619 } 620 621 pmf_device_deregister(self); 622 usbd_abort_pipe(sc->sc_ipipe); 623 usbd_close_pipe(sc->sc_ipipe); 624 625 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, sc->sc_dev); 626 627 #if 0 628 if (hub->ports[0].tt) 629 kmem_free(hub->ports[0].tt, 630 (UHUB_IS_SINGLE_TT(sc) ? 1 : nports) * 631 sizeof (struct usbd_tt)); 632 #endif 633 kmem_free(hub, 634 sizeof(*hub) + (nports-1) * sizeof(struct usbd_port)); 635 sc->sc_hub->ud_hub = NULL; 636 if (sc->sc_status) 637 kmem_free(sc->sc_status, sc->sc_statuslen); 638 if (sc->sc_statusbuf) 639 kmem_free(sc->sc_statusbuf, sc->sc_statuslen); 640 641 /* XXXSMP usb */ 642 KERNEL_UNLOCK_ONE(curlwp); 643 644 return 0; 645 } 646 647 int 648 uhub_rescan(device_t self, const char *ifattr, const int *locators) 649 { 650 struct uhub_softc *sc = device_private(self); 651 struct usbd_hub *hub = sc->sc_hub->ud_hub; 652 struct usbd_device *dev; 653 int port; 654 655 for (port = 0; port < hub->uh_hubdesc.bNbrPorts; port++) { 656 dev = hub->uh_ports[port].up_dev; 657 if (dev == NULL) 658 continue; 659 usbd_reattach_device(sc->sc_dev, dev, port, locators); 660 } 661 return 0; 662 } 663 664 /* Called when a device has been detached from it */ 665 void 666 uhub_childdet(device_t self, device_t child) 667 { 668 struct uhub_softc *sc = device_private(self); 669 struct usbd_device *devhub = sc->sc_hub; 670 struct usbd_device *dev; 671 int nports; 672 int port; 673 int i; 674 675 if (!devhub->ud_hub) 676 /* should never happen; children are only created after init */ 677 panic("hub not fully initialised, but child deleted?"); 678 679 nports = devhub->ud_hub->uh_hubdesc.bNbrPorts; 680 for (port = 0; port < nports; port++) { 681 dev = devhub->ud_hub->uh_ports[port].up_dev; 682 if (!dev || dev->ud_subdevlen == 0) 683 continue; 684 for (i = 0; i < dev->ud_subdevlen; i++) { 685 if (dev->ud_subdevs[i] == child) { 686 dev->ud_subdevs[i] = NULL; 687 dev->ud_nifaces_claimed--; 688 } 689 } 690 if (dev->ud_nifaces_claimed == 0) { 691 kmem_free(dev->ud_subdevs, 692 dev->ud_subdevlen * sizeof(device_t)); 693 dev->ud_subdevs = NULL; 694 dev->ud_subdevlen = 0; 695 } 696 } 697 } 698 699 700 /* 701 * Hub interrupt. 702 * This an indication that some port has changed status. 703 * Notify the bus event handler thread that we need 704 * to be explored again. 705 */ 706 void 707 uhub_intr(struct usbd_xfer *xfer, void *addr, usbd_status status) 708 { 709 struct uhub_softc *sc = addr; 710 711 DPRINTFN(5,("uhub_intr: sc=%p\n", sc)); 712 713 if (status == USBD_STALLED) 714 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 715 else if (status == USBD_NORMAL_COMPLETION && 716 !sc->sc_explorepending) { 717 /* 718 * Make sure the status is not overwritten in between. 719 * XXX we should suspend the pipe instead 720 */ 721 memcpy(sc->sc_status, sc->sc_statusbuf, sc->sc_statuslen); 722 sc->sc_explorepending = 1; 723 usb_needs_explore(sc->sc_hub); 724 } 725 /* 726 * XXX workaround for broken implementation of the interrupt 727 * pipe in EHCI root hub emulation which doesn't resend 728 * status change notifications until handled: force a rescan 729 * of the ports we touched in the last run 730 */ 731 if (status == USBD_NORMAL_COMPLETION && sc->sc_explorepending && 732 sc->sc_isehciroothub) 733 usb_needs_explore(sc->sc_hub); 734 } 735
Indexes created Thu Sep 25 14:09:45 GMT 2025