sys/dev/usbmisc/uhid/uhid.c

   1 /*
   2  * $NetBSD: uhid.c,v 1.46 2001/11/13 06:24:55 lukem Exp $
   3  * $FreeBSD: src/sys/dev/usb/uhid.c,v 1.65 2003/11/09 09:17:22 tanimura Exp $
   4  * $DragonFly: src/sys/dev/usbmisc/uhid/uhid.c,v 1.26 2007/07/01 21:24:03 hasso Exp $
   5  */
   6
   7 /* Also already merged from NetBSD:
   8  *      $NetBSD: uhid.c,v 1.54 2002/09/23 05:51:21 simonb Exp $
   9  */
  10
  11 /*
  12  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  13  * All rights reserved.
  14  *
  15  * This code is derived from software contributed to The NetBSD Foundation
  16  * by Lennart Augustsson (lennart@augustsson.net) at
  17  * Carlstedt Research & Technology.
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions
  21  * are met:
  22  * 1. Redistributions of source code must retain the above copyright
  23  *    notice, this list of conditions and the following disclaimer.
  24  * 2. Redistributions in binary form must reproduce the above copyright
  25  *    notice, this list of conditions and the following disclaimer in the
  26  *    documentation and/or other materials provided with the distribution.
  27  * 3. All advertising materials mentioning features or use of this software
  28  *    must display the following acknowledgement:
  29  *        This product includes software developed by the NetBSD
  30  *        Foundation, Inc. and its contributors.
  31  * 4. Neither the name of The NetBSD Foundation nor the names of its
  32  *    contributors may be used to endorse or promote products derived
  33  *    from this software without specific prior written permission.
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  36  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  37  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  39  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  40  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  41  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  42  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  43  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  44  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  45  * POSSIBILITY OF SUCH DAMAGE.
  46  */
  47
  48 /*
  49  * HID spec: http://www.usb.org/developers/data/usbhid10.pdf
  50  */
  51
  52 #include <sys/param.h>
  53 #include <sys/systm.h>
  54 #include <sys/kernel.h>
  55 #include <sys/lock.h>
  56 #include <sys/malloc.h>
  57 #include <sys/signalvar.h>
  58 #include <sys/ioccom.h>
  59 #include <sys/filio.h>
  60 #include <sys/module.h>
  61 #include <sys/bus.h>
  62 #include <sys/ioccom.h>
  63 #include <sys/conf.h>
  64 #include <sys/tty.h>
  65 #include <sys/select.h>
  66 #include <sys/proc.h>
  67 #include <sys/vnode.h>
  68 #include <sys/poll.h>
  69 #include <sys/sysctl.h>
  70 #include <sys/thread2.h>
  71
  72 #include <bus/usb/usb.h>
  73 #include <bus/usb/usbhid.h>
  74
  75 #include <bus/usb/usbdevs.h>
  76 #include <bus/usb/usbdi.h>
  77 #include <bus/usb/usbdi_util.h>
  78 #include <bus/usb/hid.h>
  79
  80 /* Report descriptor for broken Wacom Graphire */
  81 #include <bus/usb/ugraphire_rdesc.h>
  82
  83 #ifdef USB_DEBUG
  84 #define DPRINTF(x)      if (uhiddebug) kprintf x
  85 #define DPRINTFN(n,x)   if (uhiddebug>(n)) kprintf x
  86 int     uhiddebug = 0;
  87 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
  88 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
  89            &uhiddebug, 0, "uhid debug level");
  90 #else
  91 #define DPRINTF(x)
  92 #define DPRINTFN(n,x)
  93 #endif
  94
  95 struct uhid_softc {
  96         device_t sc_dev;                        /* base device */
  97         usbd_device_handle sc_udev;
  98         usbd_interface_handle sc_iface; /* interface */
  99         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
 100         int sc_ep_addr;
 101
 102         int sc_isize;
 103         int sc_osize;
 104         int sc_fsize;
 105         u_int8_t sc_iid;
 106         u_int8_t sc_oid;
 107         u_int8_t sc_fid;
 108
 109         u_char *sc_ibuf;
 110         u_char *sc_obuf;
 111
 112         void *sc_repdesc;
 113         int sc_repdesc_size;
 114
 115         struct clist sc_q;
 116         struct selinfo sc_rsel;
 117         struct proc *sc_async;  /* process that wants SIGIO */
 118         u_char sc_state;        /* driver state */
 119 #define UHID_OPEN       0x01    /* device is open */
 120 #define UHID_ASLP       0x02    /* waiting for device data */
 121 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
 122 #define UHID_IMMED      0x08    /* return read data immediately */
 123
 124         int sc_refcnt;
 125         u_char sc_dying;
 126 };
 127
 128 #define UHIDUNIT(dev)   (minor(dev))
 129 #define UHID_CHUNK      128     /* chunk size for read */
 130 #define UHID_BSIZE      1020    /* buffer size */
 131
 132 d_open_t        uhidopen;
 133 d_close_t       uhidclose;
 134 d_read_t        uhidread;
 135 d_write_t       uhidwrite;
 136 d_ioctl_t       uhidioctl;
 137 d_poll_t        uhidpoll;
 138
 139 #define         UHID_CDEV_MAJOR 122
 140
 141 static struct dev_ops uhid_ops = {
 142         { "uhid", UHID_CDEV_MAJOR, 0 },
 143         .d_open =       uhidopen,
 144         .d_close =      uhidclose,
 145         .d_read =       uhidread,
 146         .d_write =      uhidwrite,
 147         .d_ioctl =      uhidioctl,
 148         .d_poll =       uhidpoll,
 149 };
 150
 151 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
 152                            usbd_status);
 153
 154 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
 155 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
 156 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int);
 157
 158 USB_DECLARE_DRIVER(uhid);
 159
 160 static int
 161 uhid_match(device_t self)
 162 {
 163         struct usb_attach_arg *uaa = device_get_ivars(self);
 164         usb_interface_descriptor_t *id;
 165
 166         if (uaa->iface == NULL)
 167                 return (UMATCH_NONE);
 168         id = usbd_get_interface_descriptor(uaa->iface);
 169         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
 170                 return (UMATCH_NONE);
 171         if (uaa->matchlvl)
 172                 return (uaa->matchlvl);
 173         return (UMATCH_IFACECLASS_GENERIC);
 174 }
 175
 176 static int
 177 uhid_attach(device_t self)
 178 {
 179         struct uhid_softc *sc = device_get_softc(self);
 180         struct usb_attach_arg *uaa = device_get_ivars(self);
 181         usbd_interface_handle iface = uaa->iface;
 182         usb_interface_descriptor_t *id;
 183         usb_endpoint_descriptor_t *ed;
 184         int size;
 185         void *desc;
 186         usbd_status err;
 187         char devinfo[1024];
 188
 189         sc->sc_udev = uaa->device;
 190         sc->sc_iface = iface;
 191         id = usbd_get_interface_descriptor(iface);
 192         usbd_devinfo(uaa->device, 0, devinfo);
 193         sc->sc_dev = self;
 194         device_set_desc_copy(self, devinfo);
 195         kprintf("%s: %s, iclass %d/%d\n", device_get_nameunit(sc->sc_dev),
 196                devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
 197
 198         ed = usbd_interface2endpoint_descriptor(iface, 0);
 199         if (ed == NULL) {
 200                 kprintf("%s: could not read endpoint descriptor\n",
 201                        device_get_nameunit(sc->sc_dev));
 202                 sc->sc_dying = 1;
 203                 return ENXIO;
 204         }
 205
 206         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
 207                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
 208                      " bInterval=%d\n",
 209                      ed->bLength, ed->bDescriptorType,
 210                      ed->bEndpointAddress & UE_ADDR,
 211                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
 212                      ed->bmAttributes & UE_XFERTYPE,
 213                      UGETW(ed->wMaxPacketSize), ed->bInterval));
 214
 215         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
 216             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 217                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
 218                 sc->sc_dying = 1;
 219                 return ENXIO;
 220         }
 221
 222         sc->sc_ep_addr = ed->bEndpointAddress;
 223
 224         if (uaa->vendor == USB_VENDOR_WACOM &&
 225             uaa->product == USB_PRODUCT_WACOM_GRAPHIRE /* &&
 226             uaa->revision == 0x???? */) { /* XXX should use revision */
 227                 /* The report descriptor for the Wacom Graphire is broken. */
 228                 size = sizeof uhid_graphire_report_descr;
 229                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
 230                 err = USBD_NORMAL_COMPLETION;
 231                 memcpy(desc, uhid_graphire_report_descr, size);
 232         } else {
 233                 desc = NULL;
 234                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
 235         }
 236
 237         if (err) {
 238                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
 239                 sc->sc_dying = 1;
 240                 return ENXIO;
 241         }
 242
 243         (void)usbd_set_idle(iface, 0, 0);
 244
 245         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
 246         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
 247         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
 248
 249         sc->sc_repdesc = desc;
 250         sc->sc_repdesc_size = size;
 251
 252         dev_ops_add(&uhid_ops, -1, device_get_unit(self));
 253         make_dev(&uhid_ops, device_get_unit(self),
 254                 UID_ROOT, GID_OPERATOR,
 255                 0644, "uhid%d", device_get_unit(self));
 256
 257         return 0;
 258 }
 259
 260 static int
 261 uhid_detach(device_t self)
 262 {
 263         struct uhid_softc *sc = device_get_softc(self);
 264
 265         DPRINTF(("uhid_detach: sc=%p\n", sc));
 266
 267         sc->sc_dying = 1;
 268         if (sc->sc_intrpipe != NULL)
 269                 usbd_abort_pipe(sc->sc_intrpipe);
 270
 271         if (sc->sc_state & UHID_OPEN) {
 272                 crit_enter();
 273                 if (--sc->sc_refcnt >= 0) {
 274                         /* Wake everyone */
 275                         wakeup(&sc->sc_q);
 276                         /* Wait for processes to go away. */
 277                         usb_detach_wait(sc->sc_dev);
 278                 }
 279                 crit_exit();
 280         }
 281
 282         dev_ops_remove(&uhid_ops, -1, device_get_unit(self));
 283
 284         if (sc->sc_repdesc)
 285                 kfree(sc->sc_repdesc, M_USBDEV);
 286
 287         return (0);
 288 }
 289
 290 void
 291 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 292 {
 293         struct uhid_softc *sc = addr;
 294
 295 #ifdef USB_DEBUG
 296         if (uhiddebug > 5) {
 297                 u_int32_t cc, i;
 298
 299                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
 300                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
 301                 DPRINTF(("uhid_intr: data ="));
 302                 for (i = 0; i < cc; i++)
 303                         DPRINTF((" %02x", sc->sc_ibuf[i]));
 304                 DPRINTF(("\n"));
 305         }
 306 #endif
 307
 308         if (status == USBD_CANCELLED)
 309                 return;
 310
 311         if (status != USBD_NORMAL_COMPLETION) {
 312                 DPRINTF(("uhid_intr: status=%d\n", status));
 313                 if (status == USBD_STALLED)
 314                     sc->sc_state |= UHID_NEEDCLEAR;
 315                 return;
 316         }
 317
 318         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
 319
 320         if (sc->sc_state & UHID_ASLP) {
 321                 sc->sc_state &= ~UHID_ASLP;
 322                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
 323                 wakeup(&sc->sc_q);
 324         }
 325         selwakeuppri(&sc->sc_rsel, 0);
 326         if (sc->sc_async != NULL) {
 327                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
 328                 ksignal(sc->sc_async, SIGIO);
 329         }
 330 }
 331
 332 int
 333 uhidopen(struct dev_open_args *ap)
 334 {
 335         cdev_t dev = ap->a_head.a_dev;
 336         struct uhid_softc *sc;
 337         usbd_status err;
 338
 339         USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
 340
 341         DPRINTF(("uhidopen: sc=%p\n", sc));
 342
 343         if (sc->sc_dying)
 344                 return (ENXIO);
 345
 346         if (sc->sc_state & UHID_OPEN)
 347                 return (EBUSY);
 348         sc->sc_state |= UHID_OPEN;
 349
 350         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
 351                 sc->sc_state &= ~UHID_OPEN;
 352                 return (ENOMEM);
 353         }
 354
 355         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 356         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
 357
 358         /* Set up interrupt pipe. */
 359         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
 360                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
 361                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
 362         if (err) {
 363                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
 364                          "error=%d\n",err));
 365                 kfree(sc->sc_ibuf, M_USBDEV);
 366                 kfree(sc->sc_obuf, M_USBDEV);
 367                 sc->sc_ibuf = sc->sc_obuf = NULL;
 368
 369                 sc->sc_state &= ~UHID_OPEN;
 370                 return (EIO);
 371         }
 372
 373         sc->sc_state &= ~UHID_IMMED;
 374
 375         sc->sc_async = 0;
 376
 377         return (0);
 378 }
 379
 380 int
 381 uhidclose(struct dev_close_args *ap)
 382 {
 383         cdev_t dev = ap->a_head.a_dev;
 384         struct uhid_softc *sc;
 385
 386         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 387
 388         DPRINTF(("uhidclose: sc=%p\n", sc));
 389
 390         /* Disable interrupts. */
 391         usbd_abort_pipe(sc->sc_intrpipe);
 392         usbd_close_pipe(sc->sc_intrpipe);
 393         sc->sc_intrpipe = 0;
 394
 395         ndflush(&sc->sc_q, sc->sc_q.c_cc);
 396         clfree(&sc->sc_q);
 397
 398         kfree(sc->sc_ibuf, M_USBDEV);
 399         kfree(sc->sc_obuf, M_USBDEV);
 400         sc->sc_ibuf = sc->sc_obuf = NULL;
 401
 402         sc->sc_state &= ~UHID_OPEN;
 403
 404         sc->sc_async = 0;
 405
 406         return (0);
 407 }
 408
 409 int
 410 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
 411 {
 412         int error = 0;
 413         size_t length;
 414         u_char buffer[UHID_CHUNK];
 415         usbd_status err;
 416
 417         DPRINTFN(1, ("uhidread\n"));
 418         if (sc->sc_state & UHID_IMMED) {
 419                 DPRINTFN(1, ("uhidread immed\n"));
 420
 421                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 422                           sc->sc_iid, buffer, sc->sc_isize);
 423                 if (err)
 424                         return (EIO);
 425                 return (uiomove(buffer, sc->sc_isize, uio));
 426         }
 427
 428         crit_enter();
 429         while (sc->sc_q.c_cc == 0) {
 430                 if (flag & IO_NDELAY) {
 431                         crit_exit();
 432                         return (EWOULDBLOCK);
 433                 }
 434                 sc->sc_state |= UHID_ASLP;
 435                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
 436                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
 437                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
 438                 if (sc->sc_dying)
 439                         error = EIO;
 440                 if (error) {
 441                         sc->sc_state &= ~UHID_ASLP;
 442                         break;
 443                 }
 444                 if (sc->sc_state & UHID_NEEDCLEAR) {
 445                         DPRINTFN(-1,("uhidread: clearing stall\n"));
 446                         sc->sc_state &= ~UHID_NEEDCLEAR;
 447                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
 448                 }
 449         }
 450         crit_exit();
 451
 452         /* Transfer as many chunks as possible. */
 453         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 454                 length = min(sc->sc_q.c_cc, uio->uio_resid);
 455                 if (length > sizeof(buffer))
 456                         length = sizeof(buffer);
 457
 458                 /* Remove a small chunk from the input queue. */
 459                 (void) q_to_b(&sc->sc_q, buffer, length);
 460                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
 461
 462                 /* Copy the data to the user process. */
 463                 if ((error = uiomove(buffer, length, uio)) != 0)
 464                         break;
 465         }
 466
 467         return (error);
 468 }
 469
 470 int
 471 uhidread(struct dev_read_args *ap)
 472 {
 473         cdev_t dev = ap->a_head.a_dev;
 474         struct uhid_softc *sc;
 475         int error;
 476
 477         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 478
 479         sc->sc_refcnt++;
 480         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
 481         if (--sc->sc_refcnt < 0)
 482                 usb_detach_wakeup(sc->sc_dev);
 483         return (error);
 484 }
 485
 486 int
 487 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
 488 {
 489         int error;
 490         int size;
 491         usbd_status err;
 492
 493         DPRINTFN(1, ("uhidwrite\n"));
 494
 495         if (sc->sc_dying)
 496                 return (EIO);
 497
 498         size = sc->sc_osize;
 499         error = 0;
 500         if (uio->uio_resid != size)
 501                 return (EINVAL);
 502         error = uiomove(sc->sc_obuf, size, uio);
 503         if (!error) {
 504                 if (sc->sc_oid)
 505                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 506                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
 507                 else
 508                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 509                                   0, sc->sc_obuf, size);
 510                 if (err)
 511                         error = EIO;
 512         }
 513
 514         return (error);
 515 }
 516
 517 int
 518 uhidwrite(struct dev_write_args *ap)
 519 {
 520         cdev_t dev = ap->a_head.a_dev;
 521         struct uhid_softc *sc;
 522         int error;
 523
 524         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 525
 526         sc->sc_refcnt++;
 527         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
 528         if (--sc->sc_refcnt < 0)
 529                 usb_detach_wakeup(sc->sc_dev);
 530         return (error);
 531 }
 532
 533 int
 534 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
 535 {
 536         struct usb_ctl_report_desc *rd;
 537         struct usb_ctl_report *re;
 538         int size, id;
 539         usbd_status err;
 540
 541         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
 542
 543         if (sc->sc_dying)
 544                 return (EIO);
 545
 546         switch (cmd) {
 547         case FIOASYNC:
 548                 if (*(int *)addr) {
 549                         if (sc->sc_async != NULL)
 550                                 return (EBUSY);
 551                         sc->sc_async = curproc;
 552                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
 553                 } else
 554                         sc->sc_async = NULL;
 555                 break;
 556
 557         /* XXX this is not the most general solution. */
 558         case TIOCSPGRP:
 559                 if (sc->sc_async == NULL)
 560                         return (EINVAL);
 561                 if (*(int *)addr != sc->sc_async->p_pgid)
 562                         return (EPERM);
 563                 break;
 564
 565         case USB_GET_REPORT_DESC:
 566                 rd = (struct usb_ctl_report_desc *)addr;
 567                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
 568                 rd->ucrd_size = size;
 569                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
 570                 break;
 571
 572         case USB_SET_IMMED:
 573                 if (*(int *)addr) {
 574                         /* XXX should read into ibuf, but does it matter? */
 575                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 576                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
 577                         if (err)
 578                                 return (EOPNOTSUPP);
 579
 580                         sc->sc_state |=  UHID_IMMED;
 581                 } else
 582                         sc->sc_state &= ~UHID_IMMED;
 583                 break;
 584
 585         case USB_GET_REPORT:
 586                 re = (struct usb_ctl_report *)addr;
 587                 switch (re->ucr_report) {
 588                 case UHID_INPUT_REPORT:
 589                         size = sc->sc_isize;
 590                         id = sc->sc_iid;
 591                         break;
 592                 case UHID_OUTPUT_REPORT:
 593                         size = sc->sc_osize;
 594                         id = sc->sc_oid;
 595                         break;
 596                 case UHID_FEATURE_REPORT:
 597                         size = sc->sc_fsize;
 598                         id = sc->sc_fid;
 599                         break;
 600                 default:
 601                         return (EINVAL);
 602                 }
 603                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 604                           size);
 605                 if (err)
 606                         return (EIO);
 607                 break;
 608
 609         case USB_SET_REPORT:
 610                 re = (struct usb_ctl_report *)addr;
 611                 switch (re->ucr_report) {
 612                 case UHID_INPUT_REPORT:
 613                         size = sc->sc_isize;
 614                         id = sc->sc_iid;
 615                         break;
 616                 case UHID_OUTPUT_REPORT:
 617                         size = sc->sc_osize;
 618                         id = sc->sc_oid;
 619                         break;
 620                 case UHID_FEATURE_REPORT:
 621                         size = sc->sc_fsize;
 622                         id = sc->sc_fid;
 623                         break;
 624                 default:
 625                         return (EINVAL);
 626                 }
 627                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 628                           size);
 629                 if (err)
 630                         return (EIO);
 631                 break;
 632
 633         case USB_GET_REPORT_ID:
 634                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 635                 break;
 636
 637         default:
 638                 return (EINVAL);
 639         }
 640         return (0);
 641 }
 642
 643 int
 644 uhidioctl(struct dev_ioctl_args *ap)
 645 {
 646         cdev_t dev = ap->a_head.a_dev;
 647         struct uhid_softc *sc;
 648         int error;
 649
 650         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 651
 652         sc->sc_refcnt++;
 653         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
 654         if (--sc->sc_refcnt < 0)
 655                 usb_detach_wakeup(sc->sc_dev);
 656         return (error);
 657 }
 658
 659 int
 660 uhidpoll(struct dev_poll_args *ap)
 661 {
 662         cdev_t dev = ap->a_head.a_dev;
 663         struct uhid_softc *sc;
 664         int revents = 0;
 665
 666         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 667
 668         if (sc->sc_dying)
 669                 return (EIO);
 670
 671         crit_enter();
 672         if (ap->a_events & (POLLOUT | POLLWRNORM))
 673                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
 674         if (ap->a_events & (POLLIN | POLLRDNORM)) {
 675                 if (sc->sc_q.c_cc > 0)
 676                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
 677                 else
 678                         selrecord(curthread, &sc->sc_rsel);
 679         }
 680         crit_exit();
 681         ap->a_events = revents;
 682         return (0);
 683 }
 684
 685 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
 686