Annotation of sys/dev/usb/uhub.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: uhub.c,v 1.47 2007/06/14 10:11:16 mbalmer Exp $ */
! 2: /* $NetBSD: uhub.c,v 1.64 2003/02/08 03:32:51 ichiro Exp $ */
! 3: /* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 n_hibma Exp $ */
! 4:
! 5: /*
! 6: * Copyright (c) 1998 The NetBSD Foundation, Inc.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to The NetBSD Foundation
! 10: * by Lennart Augustsson (lennart@augustsson.net) at
! 11: * Carlstedt Research & Technology.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. All advertising materials mentioning features or use of this software
! 22: * must display the following acknowledgement:
! 23: * This product includes software developed by the NetBSD
! 24: * Foundation, Inc. and its contributors.
! 25: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 26: * contributors may be used to endorse or promote products derived
! 27: * from this software without specific prior written permission.
! 28: *
! 29: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 30: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 31: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 32: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 33: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 34: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 35: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 36: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 37: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 38: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 39: * POSSIBILITY OF SUCH DAMAGE.
! 40: */
! 41:
! 42: /*
! 43: * USB spec: http://www.usb.org/developers/docs/usbspec.zip
! 44: */
! 45:
! 46: #include <sys/param.h>
! 47: #include <sys/systm.h>
! 48: #include <sys/kernel.h>
! 49: #include <sys/malloc.h>
! 50: #include <sys/device.h>
! 51: #include <sys/proc.h>
! 52:
! 53: #include <machine/bus.h>
! 54:
! 55: #include <dev/usb/usb.h>
! 56: #include <dev/usb/usbdi.h>
! 57: #include <dev/usb/usbdi_util.h>
! 58: #include <dev/usb/usbdivar.h>
! 59:
! 60: #define UHUB_INTR_INTERVAL 255 /* ms */
! 61:
! 62: #ifdef UHUB_DEBUG
! 63: #define DPRINTF(x) do { if (uhubdebug) printf x; } while (0)
! 64: #define DPRINTFN(n,x) do { if (uhubdebug>(n)) printf x; } while (0)
! 65: int uhubdebug = 0;
! 66: #else
! 67: #define DPRINTF(x)
! 68: #define DPRINTFN(n,x)
! 69: #endif
! 70:
! 71: struct uhub_softc {
! 72: struct device sc_dev; /* base device */
! 73: usbd_device_handle sc_hub; /* USB device */
! 74: usbd_pipe_handle sc_ipipe; /* interrupt pipe */
! 75: u_int8_t sc_status[1]; /* XXX more ports */
! 76: u_char sc_running;
! 77: };
! 78: #define UHUB_PROTO(sc) ((sc)->sc_hub->ddesc.bDeviceProtocol)
! 79: #define UHUB_IS_HIGH_SPEED(sc) (UHUB_PROTO(sc) != UDPROTO_FSHUB)
! 80: #define UHUB_IS_SINGLE_TT(sc) (UHUB_PROTO(sc) == UDPROTO_HSHUBSTT)
! 81:
! 82: usbd_status uhub_explore(usbd_device_handle hub);
! 83: void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status);
! 84:
! 85: /*
! 86: * We need two attachment points:
! 87: * hub to usb and hub to hub
! 88: * Every other driver only connects to hubs
! 89: */
! 90:
! 91: int uhub_match(struct device *, void *, void *);
! 92: void uhub_attach(struct device *, struct device *, void *);
! 93: int uhub_detach(struct device *, int);
! 94: int uhub_activate(struct device *, enum devact);
! 95:
! 96: struct cfdriver uhub_cd = {
! 97: NULL, "uhub", DV_DULL
! 98: };
! 99:
! 100: const struct cfattach uhub_ca = {
! 101: sizeof(struct uhub_softc),
! 102: uhub_match,
! 103: uhub_attach,
! 104: uhub_detach,
! 105: uhub_activate,
! 106: };
! 107:
! 108: struct cfattach uhub_uhub_ca = {
! 109: sizeof(struct uhub_softc), uhub_match, uhub_attach,
! 110: uhub_detach, uhub_activate
! 111: };
! 112:
! 113: int
! 114: uhub_match(struct device *parent, void *match, void *aux)
! 115: {
! 116: struct usb_attach_arg *uaa = aux;
! 117: usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device);
! 118:
! 119: DPRINTFN(5,("uhub_match, dd=%p\n", dd));
! 120: /*
! 121: * The subclass for hubs seems to be 0 for some and 1 for others,
! 122: * so we just ignore the subclass.
! 123: */
! 124: if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB)
! 125: return (UMATCH_DEVCLASS_DEVSUBCLASS);
! 126: return (UMATCH_NONE);
! 127: }
! 128:
! 129: void
! 130: uhub_attach(struct device *parent, struct device *self, void *aux)
! 131: {
! 132: struct uhub_softc *sc = (struct uhub_softc *)self;
! 133: struct usb_attach_arg *uaa = aux;
! 134: usbd_device_handle dev = uaa->device;
! 135: char *devinfop;
! 136: usbd_status err;
! 137: struct usbd_hub *hub = NULL;
! 138: usb_device_request_t req;
! 139: usb_hub_descriptor_t hubdesc;
! 140: int p, port, nports, nremov, pwrdly;
! 141: usbd_interface_handle iface;
! 142: usb_endpoint_descriptor_t *ed;
! 143: struct usbd_tt *tts = NULL;
! 144:
! 145: DPRINTFN(1,("uhub_attach\n"));
! 146: sc->sc_hub = dev;
! 147:
! 148: devinfop = usbd_devinfo_alloc(dev, 0);
! 149: printf(": %s\n", devinfop);
! 150: usbd_devinfo_free(devinfop);
! 151:
! 152: err = usbd_set_config_index(dev, 0, 1);
! 153: if (err) {
! 154: DPRINTF(("%s: configuration failed, error=%s\n",
! 155: sc->sc_dev.dv_xname, usbd_errstr(err)));
! 156: return;
! 157: }
! 158:
! 159: if (dev->depth > USB_HUB_MAX_DEPTH) {
! 160: printf("%s: hub depth (%d) exceeded, hub ignored\n",
! 161: sc->sc_dev.dv_xname, USB_HUB_MAX_DEPTH);
! 162: return;
! 163: }
! 164:
! 165: /* Get hub descriptor. */
! 166: req.bmRequestType = UT_READ_CLASS_DEVICE;
! 167: req.bRequest = UR_GET_DESCRIPTOR;
! 168: USETW2(req.wValue, UDESC_HUB, 0);
! 169: USETW(req.wIndex, 0);
! 170: USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE);
! 171: DPRINTFN(1,("usb_init_hub: getting hub descriptor\n"));
! 172: err = usbd_do_request(dev, &req, &hubdesc);
! 173: nports = hubdesc.bNbrPorts;
! 174: if (!err && nports > 7) {
! 175: USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8);
! 176: err = usbd_do_request(dev, &req, &hubdesc);
! 177: }
! 178: if (err) {
! 179: DPRINTF(("%s: getting hub descriptor failed, error=%s\n",
! 180: sc->sc_dev.dv_xname, usbd_errstr(err)));
! 181: return;
! 182: }
! 183:
! 184: for (nremov = 0, port = 1; port <= nports; port++)
! 185: if (!UHD_NOT_REMOV(&hubdesc, port))
! 186: nremov++;
! 187:
! 188: #ifdef UHUB_DEBUG
! 189: printf("%s: %d port%s with %d removable, %s powered",
! 190: sc->sc_dev.dv_xname, nports, nports != 1 ? "s" : "",
! 191: nremov, dev->self_powered ? "self" : "bus");
! 192:
! 193: if (dev->depth > 0 && UHUB_IS_HIGH_SPEED(sc)) {
! 194: printf(", %s transaction translator%s",
! 195: UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple",
! 196: UHUB_IS_SINGLE_TT(sc) ? "" : "s");
! 197: }
! 198: printf("\n");
! 199: #endif
! 200:
! 201: if (nports == 0) {
! 202: printf("%s: no ports, hub ignored\n", sc->sc_dev.dv_xname);
! 203: goto bad;
! 204: }
! 205:
! 206: hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port),
! 207: M_USBDEV, M_NOWAIT);
! 208: if (hub == NULL)
! 209: return;
! 210: dev->hub = hub;
! 211: dev->hub->hubsoftc = sc;
! 212: hub->explore = uhub_explore;
! 213: hub->hubdesc = hubdesc;
! 214:
! 215: DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, "
! 216: "parent->selfpowered=%d\n",
! 217: dev->self_powered, dev->powersrc->parent,
! 218: dev->powersrc->parent ?
! 219: dev->powersrc->parent->self_powered : 0));
! 220:
! 221: if (!dev->self_powered && dev->powersrc->parent != NULL &&
! 222: !dev->powersrc->parent->self_powered) {
! 223: printf("%s: bus powered hub connected to bus powered hub, "
! 224: "ignored\n", sc->sc_dev.dv_xname);
! 225: goto bad;
! 226: }
! 227:
! 228: /* Set up interrupt pipe. */
! 229: err = usbd_device2interface_handle(dev, 0, &iface);
! 230: if (err) {
! 231: printf("%s: no interface handle\n", sc->sc_dev.dv_xname);
! 232: goto bad;
! 233: }
! 234: ed = usbd_interface2endpoint_descriptor(iface, 0);
! 235: if (ed == NULL) {
! 236: printf("%s: no endpoint descriptor\n", sc->sc_dev.dv_xname);
! 237: goto bad;
! 238: }
! 239: if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
! 240: printf("%s: bad interrupt endpoint\n", sc->sc_dev.dv_xname);
! 241: goto bad;
! 242: }
! 243:
! 244: err = usbd_open_pipe_intr(iface, ed->bEndpointAddress,
! 245: USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status,
! 246: sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL);
! 247: if (err) {
! 248: printf("%s: cannot open interrupt pipe\n",
! 249: sc->sc_dev.dv_xname);
! 250: goto bad;
! 251: }
! 252:
! 253: /* Wait with power off for a while. */
! 254: usbd_delay_ms(dev, USB_POWER_DOWN_TIME);
! 255:
! 256: usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, &sc->sc_dev);
! 257:
! 258: /*
! 259: * To have the best chance of success we do things in the exact same
! 260: * order as Windoze98. This should not be necessary, but some
! 261: * devices do not follow the USB specs to the letter.
! 262: *
! 263: * These are the events on the bus when a hub is attached:
! 264: * Get device and config descriptors (see attach code)
! 265: * Get hub descriptor (see above)
! 266: * For all ports
! 267: * turn on power
! 268: * wait for power to become stable
! 269: * (all below happens in explore code)
! 270: * For all ports
! 271: * clear C_PORT_CONNECTION
! 272: * For all ports
! 273: * get port status
! 274: * if device connected
! 275: * wait 100 ms
! 276: * turn on reset
! 277: * wait
! 278: * clear C_PORT_RESET
! 279: * get port status
! 280: * proceed with device attachment
! 281: */
! 282:
! 283: if (UHUB_IS_HIGH_SPEED(sc)) {
! 284: tts = malloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) *
! 285: sizeof (struct usbd_tt), M_USBDEV, M_NOWAIT);
! 286: if (!tts)
! 287: goto bad;
! 288: }
! 289: /* Set up data structures */
! 290: for (p = 0; p < nports; p++) {
! 291: struct usbd_port *up = &hub->ports[p];
! 292: up->device = NULL;
! 293: up->parent = dev;
! 294: up->portno = p+1;
! 295: if (dev->self_powered)
! 296: /* Self powered hub, give ports maximum current. */
! 297: up->power = USB_MAX_POWER;
! 298: else
! 299: up->power = USB_MIN_POWER;
! 300: up->restartcnt = 0;
! 301: up->reattach = 0;
! 302: if (UHUB_IS_HIGH_SPEED(sc)) {
! 303: up->tt = &tts[UHUB_IS_SINGLE_TT(sc) ? 0 : p];
! 304: up->tt->hub = hub;
! 305: } else {
! 306: up->tt = NULL;
! 307: }
! 308: }
! 309:
! 310: /* XXX should check for none, individual, or ganged power? */
! 311:
! 312: pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR
! 313: + USB_EXTRA_POWER_UP_TIME;
! 314: for (port = 1; port <= nports; port++) {
! 315: /* Turn the power on. */
! 316: err = usbd_set_port_feature(dev, port, UHF_PORT_POWER);
! 317: if (err)
! 318: printf("%s: port %d power on failed, %s\n",
! 319: sc->sc_dev.dv_xname, port,
! 320: usbd_errstr(err));
! 321: DPRINTF(("usb_init_port: turn on port %d power\n", port));
! 322: }
! 323:
! 324: /* Wait for stable power. Root hubs delay in their event thread. */
! 325: if (dev->powersrc->parent != NULL)
! 326: usbd_delay_ms(dev, pwrdly);
! 327:
! 328: /* The usual exploration will finish the setup. */
! 329:
! 330: sc->sc_running = 1;
! 331:
! 332: return;
! 333:
! 334: bad:
! 335: if (hub)
! 336: free(hub, M_USBDEV);
! 337: dev->hub = NULL;
! 338: }
! 339:
! 340: usbd_status
! 341: uhub_explore(usbd_device_handle dev)
! 342: {
! 343: usb_hub_descriptor_t *hd = &dev->hub->hubdesc;
! 344: struct uhub_softc *sc = dev->hub->hubsoftc;
! 345: struct usbd_port *up;
! 346: usbd_status err;
! 347: int speed;
! 348: int port;
! 349: int change, status, reconnect;
! 350:
! 351: DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address));
! 352:
! 353: if (!sc->sc_running)
! 354: return (USBD_NOT_STARTED);
! 355:
! 356: /* Ignore hubs that are too deep. */
! 357: if (dev->depth > USB_HUB_MAX_DEPTH)
! 358: return (USBD_TOO_DEEP);
! 359:
! 360: for(port = 1; port <= hd->bNbrPorts; port++) {
! 361: up = &dev->hub->ports[port-1];
! 362: err = usbd_get_port_status(dev, port, &up->status);
! 363: if (err) {
! 364: DPRINTF(("uhub_explore: get port status failed, "
! 365: "error=%s\n", usbd_errstr(err)));
! 366: continue;
! 367: }
! 368: status = UGETW(up->status.wPortStatus);
! 369: change = UGETW(up->status.wPortChange);
! 370: reconnect = up->reattach;
! 371: up->reattach = 0;
! 372: DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n",
! 373: sc->sc_dev.dv_xname, port, status, change));
! 374: if (change & UPS_C_PORT_ENABLED) {
! 375: DPRINTF(("uhub_explore: C_PORT_ENABLED\n"));
! 376: usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
! 377: if (change & UPS_C_CONNECT_STATUS) {
! 378: /* Ignore the port error if the device
! 379: vanished. */
! 380: } else if (status & UPS_PORT_ENABLED) {
! 381: printf("%s: illegal enable change, port %d\n",
! 382: sc->sc_dev.dv_xname, port);
! 383: } else {
! 384: /* Port error condition. */
! 385: if (up->restartcnt) /* no message first time */
! 386: printf("%s: port error, restarting "
! 387: "port %d\n",
! 388: sc->sc_dev.dv_xname, port);
! 389:
! 390: if (up->restartcnt++ < USBD_RESTART_MAX)
! 391: goto disco;
! 392: else
! 393: printf("%s: port error, giving up "
! 394: "port %d\n",
! 395: sc->sc_dev.dv_xname, port);
! 396: }
! 397: }
! 398: if (!reconnect && !(change & UPS_C_CONNECT_STATUS)) {
! 399: DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_"
! 400: "STATUS\n", port));
! 401: /* No status change, just do recursive explore. */
! 402: if (up->device != NULL && up->device->hub != NULL)
! 403: up->device->hub->explore(up->device);
! 404: #if 0 && defined(DIAGNOSTIC)
! 405: if (up->device == NULL &&
! 406: (status & UPS_CURRENT_CONNECT_STATUS))
! 407: printf("%s: connected, no device\n",
! 408: sc->sc_dev.dv_xname);
! 409: #endif
! 410: continue;
! 411: }
! 412:
! 413: /* We have a connect status change, handle it. */
! 414:
! 415: DPRINTF(("uhub_explore: status change hub=%d port=%d\n",
! 416: dev->address, port));
! 417: usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION);
! 418: /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/
! 419: /*
! 420: * If there is already a device on the port the change status
! 421: * must mean that is has disconnected. Looking at the
! 422: * current connect status is not enough to figure this out
! 423: * since a new unit may have been connected before we handle
! 424: * the disconnect.
! 425: */
! 426: disco:
! 427: if (up->device != NULL) {
! 428: /* Disconnected */
! 429: DPRINTF(("uhub_explore: device addr=%d disappeared "
! 430: "on port %d\n", up->device->address, port));
! 431: usb_disconnect_port(up, &sc->sc_dev);
! 432: usbd_clear_port_feature(dev, port,
! 433: UHF_C_PORT_CONNECTION);
! 434: }
! 435: if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
! 436: /* Nothing connected, just ignore it. */
! 437: DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT"
! 438: "_STATUS\n", port));
! 439: continue;
! 440: }
! 441:
! 442: /* Connected */
! 443:
! 444: if (!(status & UPS_PORT_POWER))
! 445: printf("%s: strange, connected port %d has no power\n",
! 446: sc->sc_dev.dv_xname, port);
! 447:
! 448: /* Wait for maximum device power up time. */
! 449: usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY);
! 450:
! 451: /* Reset port, which implies enabling it. */
! 452: if (usbd_reset_port(dev, port, &up->status)) {
! 453: printf("%s: port %d reset failed\n",
! 454: sc->sc_dev.dv_xname, port);
! 455: continue;
! 456: }
! 457: /* Get port status again, it might have changed during reset */
! 458: err = usbd_get_port_status(dev, port, &up->status);
! 459: if (err) {
! 460: DPRINTF(("uhub_explore: get port status failed, "
! 461: "error=%s\n", usbd_errstr(err)));
! 462: continue;
! 463: }
! 464: status = UGETW(up->status.wPortStatus);
! 465: change = UGETW(up->status.wPortChange);
! 466: if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
! 467: /* Nothing connected, just ignore it. */
! 468: #ifdef UHUB_DEBUG
! 469: printf("%s: port %d, device disappeared after reset\n",
! 470: sc->sc_dev.dv_xname, port);
! 471: #endif
! 472: continue;
! 473: }
! 474:
! 475: /* Figure out device speed */
! 476: if (status & UPS_HIGH_SPEED)
! 477: speed = USB_SPEED_HIGH;
! 478: else if (status & UPS_LOW_SPEED)
! 479: speed = USB_SPEED_LOW;
! 480: else
! 481: speed = USB_SPEED_FULL;
! 482: /* Get device info and set its address. */
! 483: err = usbd_new_device(&sc->sc_dev, dev->bus,
! 484: dev->depth + 1, speed, port, up);
! 485: /* XXX retry a few times? */
! 486: if (err) {
! 487: DPRINTFN(-1,("uhub_explore: usbd_new_device failed, "
! 488: "error=%s\n", usbd_errstr(err)));
! 489: /* Avoid addressing problems by disabling. */
! 490: /* usbd_reset_port(dev, port, &up->status); */
! 491:
! 492: /*
! 493: * The unit refused to accept a new address, or had
! 494: * some other serious problem. Since we cannot leave
! 495: * at 0 we have to disable the port instead.
! 496: */
! 497: printf("%s: device problem, disabling port %d\n",
! 498: sc->sc_dev.dv_xname, port);
! 499: usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
! 500: } else {
! 501: /* The port set up succeeded, reset error count. */
! 502: up->restartcnt = 0;
! 503:
! 504: if (up->device->hub)
! 505: up->device->hub->explore(up->device);
! 506: }
! 507: }
! 508: return (USBD_NORMAL_COMPLETION);
! 509: }
! 510:
! 511: int
! 512: uhub_activate(struct device *self, enum devact act)
! 513: {
! 514: struct uhub_softc *sc = (struct uhub_softc *)self;
! 515: struct usbd_hub *hub = sc->sc_hub->hub;
! 516: usbd_device_handle dev;
! 517: int nports, port, i;
! 518:
! 519: switch (act) {
! 520: case DVACT_ACTIVATE:
! 521: break;
! 522:
! 523: case DVACT_DEACTIVATE:
! 524: if (hub == NULL) /* malfunctioning hub */
! 525: break;
! 526: nports = hub->hubdesc.bNbrPorts;
! 527: for(port = 0; port < nports; port++) {
! 528: dev = hub->ports[port].device;
! 529: if (dev != NULL && dev->subdevs != NULL) {
! 530: for (i = 0; dev->subdevs[i] != NULL; i++)
! 531: config_deactivate(dev->subdevs[i]);
! 532: }
! 533: }
! 534: break;
! 535: }
! 536: return (0);
! 537: }
! 538:
! 539: /*
! 540: * Called from process context when the hub is gone.
! 541: * Detach all devices on active ports.
! 542: */
! 543: int
! 544: uhub_detach(struct device *self, int flags)
! 545: {
! 546: struct uhub_softc *sc = (struct uhub_softc *)self;
! 547: struct usbd_hub *hub = sc->sc_hub->hub;
! 548: struct usbd_port *rup;
! 549: int port, nports;
! 550:
! 551: DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags));
! 552:
! 553: if (hub == NULL) /* Must be partially working */
! 554: return (0);
! 555:
! 556: usbd_abort_pipe(sc->sc_ipipe);
! 557: usbd_close_pipe(sc->sc_ipipe);
! 558:
! 559: nports = hub->hubdesc.bNbrPorts;
! 560: for(port = 0; port < nports; port++) {
! 561: rup = &hub->ports[port];
! 562: if (rup->device)
! 563: usb_disconnect_port(rup, self);
! 564: }
! 565:
! 566: usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub,
! 567: &sc->sc_dev);
! 568:
! 569: if (hub->ports[0].tt)
! 570: free(hub->ports[0].tt, M_USBDEV);
! 571: free(hub, M_USBDEV);
! 572: sc->sc_hub->hub = NULL;
! 573:
! 574: return (0);
! 575: }
! 576:
! 577: /*
! 578: * Hub interrupt.
! 579: * This an indication that some port has changed status.
! 580: * Notify the bus event handler thread that we need
! 581: * to be explored again.
! 582: */
! 583: void
! 584: uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
! 585: {
! 586: struct uhub_softc *sc = addr;
! 587:
! 588: DPRINTFN(5,("uhub_intr: sc=%p\n", sc));
! 589: if (status == USBD_STALLED)
! 590: usbd_clear_endpoint_stall_async(sc->sc_ipipe);
! 591: else if (status == USBD_NORMAL_COMPLETION)
! 592: usb_needs_explore(sc->sc_hub);
! 593: }
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