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 1.24 2007/06/28 13:55:13 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 USB_MATCH(uhid)
 161 {
 162         USB_MATCH_START(uhid, uaa);
 163         usb_interface_descriptor_t *id;
 164
 165         if (uaa->iface == NULL)
 166                 return (UMATCH_NONE);
 167         id = usbd_get_interface_descriptor(uaa->iface);
 168         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
 169                 return (UMATCH_NONE);
 170         if (uaa->matchlvl)
 171                 return (uaa->matchlvl);
 172         return (UMATCH_IFACECLASS_GENERIC);
 173 }
 174
 175 USB_ATTACH(uhid)
 176 {
 177         USB_ATTACH_START(uhid, sc, uaa);
 178         usbd_interface_handle iface = uaa->iface;
 179         usb_interface_descriptor_t *id;
 180         usb_endpoint_descriptor_t *ed;
 181         int size;
 182         void *desc;
 183         usbd_status err;
 184         char devinfo[1024];
 185
 186         sc->sc_udev = uaa->device;
 187         sc->sc_iface = iface;
 188         id = usbd_get_interface_descriptor(iface);
 189         usbd_devinfo(uaa->device, 0, devinfo);
 190         USB_ATTACH_SETUP;
 191         kprintf("%s: %s, iclass %d/%d\n", device_get_nameunit(sc->sc_dev),
 192                devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
 193
 194         ed = usbd_interface2endpoint_descriptor(iface, 0);
 195         if (ed == NULL) {
 196                 kprintf("%s: could not read endpoint descriptor\n",
 197                        device_get_nameunit(sc->sc_dev));
 198                 sc->sc_dying = 1;
 199                 USB_ATTACH_ERROR_RETURN;
 200         }
 201
 202         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
 203                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
 204                      " bInterval=%d\n",
 205                      ed->bLength, ed->bDescriptorType,
 206                      ed->bEndpointAddress & UE_ADDR,
 207                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
 208                      ed->bmAttributes & UE_XFERTYPE,
 209                      UGETW(ed->wMaxPacketSize), ed->bInterval));
 210
 211         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
 212             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 213                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
 214                 sc->sc_dying = 1;
 215                 USB_ATTACH_ERROR_RETURN;
 216         }
 217
 218         sc->sc_ep_addr = ed->bEndpointAddress;
 219
 220         if (uaa->vendor == USB_VENDOR_WACOM &&
 221             uaa->product == USB_PRODUCT_WACOM_GRAPHIRE /* &&
 222             uaa->revision == 0x???? */) { /* XXX should use revision */
 223                 /* The report descriptor for the Wacom Graphire is broken. */
 224                 size = sizeof uhid_graphire_report_descr;
 225                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
 226                 err = USBD_NORMAL_COMPLETION;
 227                 memcpy(desc, uhid_graphire_report_descr, size);
 228         } else {
 229                 desc = NULL;
 230                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
 231         }
 232
 233         if (err) {
 234                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
 235                 sc->sc_dying = 1;
 236                 USB_ATTACH_ERROR_RETURN;
 237         }
 238
 239         (void)usbd_set_idle(iface, 0, 0);
 240
 241         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
 242         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
 243         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
 244
 245         sc->sc_repdesc = desc;
 246         sc->sc_repdesc_size = size;
 247
 248         dev_ops_add(&uhid_ops, -1, device_get_unit(self));
 249         make_dev(&uhid_ops, device_get_unit(self),
 250                 UID_ROOT, GID_OPERATOR,
 251                 0644, "uhid%d", device_get_unit(self));
 252
 253         USB_ATTACH_SUCCESS_RETURN;
 254 }
 255
 256 USB_DETACH(uhid)
 257 {
 258         USB_DETACH_START(uhid, sc);
 259
 260         DPRINTF(("uhid_detach: sc=%p\n", sc));
 261
 262         sc->sc_dying = 1;
 263         if (sc->sc_intrpipe != NULL)
 264                 usbd_abort_pipe(sc->sc_intrpipe);
 265
 266         if (sc->sc_state & UHID_OPEN) {
 267                 crit_enter();
 268                 if (--sc->sc_refcnt >= 0) {
 269                         /* Wake everyone */
 270                         wakeup(&sc->sc_q);
 271                         /* Wait for processes to go away. */
 272                         usb_detach_wait(sc->sc_dev);
 273                 }
 274                 crit_exit();
 275         }
 276
 277         dev_ops_remove(&uhid_ops, -1, device_get_unit(self));
 278
 279         if (sc->sc_repdesc)
 280                 kfree(sc->sc_repdesc, M_USBDEV);
 281
 282         return (0);
 283 }
 284
 285 void
 286 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 287 {
 288         struct uhid_softc *sc = addr;
 289
 290 #ifdef USB_DEBUG
 291         if (uhiddebug > 5) {
 292                 u_int32_t cc, i;
 293
 294                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
 295                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
 296                 DPRINTF(("uhid_intr: data ="));
 297                 for (i = 0; i < cc; i++)
 298                         DPRINTF((" %02x", sc->sc_ibuf[i]));
 299                 DPRINTF(("\n"));
 300         }
 301 #endif
 302
 303         if (status == USBD_CANCELLED)
 304                 return;
 305
 306         if (status != USBD_NORMAL_COMPLETION) {
 307                 DPRINTF(("uhid_intr: status=%d\n", status));
 308                 if (status == USBD_STALLED)
 309                     sc->sc_state |= UHID_NEEDCLEAR;
 310                 return;
 311         }
 312
 313         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
 314
 315         if (sc->sc_state & UHID_ASLP) {
 316                 sc->sc_state &= ~UHID_ASLP;
 317                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
 318                 wakeup(&sc->sc_q);
 319         }
 320         selwakeuppri(&sc->sc_rsel, 0);
 321         if (sc->sc_async != NULL) {
 322                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
 323                 PROC_LOCK(sc->sc_async);
 324                 ksignal(sc->sc_async, SIGIO);
 325                 PROC_UNLOCK(sc->sc_async);
 326         }
 327 }
 328
 329 int
 330 uhidopen(struct dev_open_args *ap)
 331 {
 332         cdev_t dev = ap->a_head.a_dev;
 333         struct uhid_softc *sc;
 334         usbd_status err;
 335
 336         USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
 337
 338         DPRINTF(("uhidopen: sc=%p\n", sc));
 339
 340         if (sc->sc_dying)
 341                 return (ENXIO);
 342
 343         if (sc->sc_state & UHID_OPEN)
 344                 return (EBUSY);
 345         sc->sc_state |= UHID_OPEN;
 346
 347         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
 348                 sc->sc_state &= ~UHID_OPEN;
 349                 return (ENOMEM);
 350         }
 351
 352         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 353         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
 354
 355         /* Set up interrupt pipe. */
 356         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
 357                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
 358                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
 359         if (err) {
 360                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
 361                          "error=%d\n",err));
 362                 kfree(sc->sc_ibuf, M_USBDEV);
 363                 kfree(sc->sc_obuf, M_USBDEV);
 364                 sc->sc_ibuf = sc->sc_obuf = NULL;
 365
 366                 sc->sc_state &= ~UHID_OPEN;
 367                 return (EIO);
 368         }
 369
 370         sc->sc_state &= ~UHID_IMMED;
 371
 372         sc->sc_async = 0;
 373
 374         return (0);
 375 }
 376
 377 int
 378 uhidclose(struct dev_close_args *ap)
 379 {
 380         cdev_t dev = ap->a_head.a_dev;
 381         struct uhid_softc *sc;
 382
 383         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 384
 385         DPRINTF(("uhidclose: sc=%p\n", sc));
 386
 387         /* Disable interrupts. */
 388         usbd_abort_pipe(sc->sc_intrpipe);
 389         usbd_close_pipe(sc->sc_intrpipe);
 390         sc->sc_intrpipe = 0;
 391
 392         ndflush(&sc->sc_q, sc->sc_q.c_cc);
 393         clfree(&sc->sc_q);
 394
 395         kfree(sc->sc_ibuf, M_USBDEV);
 396         kfree(sc->sc_obuf, M_USBDEV);
 397         sc->sc_ibuf = sc->sc_obuf = NULL;
 398
 399         sc->sc_state &= ~UHID_OPEN;
 400
 401         sc->sc_async = 0;
 402
 403         return (0);
 404 }
 405
 406 int
 407 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
 408 {
 409         int error = 0;
 410         size_t length;
 411         u_char buffer[UHID_CHUNK];
 412         usbd_status err;
 413
 414         DPRINTFN(1, ("uhidread\n"));
 415         if (sc->sc_state & UHID_IMMED) {
 416                 DPRINTFN(1, ("uhidread immed\n"));
 417
 418                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 419                           sc->sc_iid, buffer, sc->sc_isize);
 420                 if (err)
 421                         return (EIO);
 422                 return (uiomove(buffer, sc->sc_isize, uio));
 423         }
 424
 425         crit_enter();
 426         while (sc->sc_q.c_cc == 0) {
 427                 if (flag & IO_NDELAY) {
 428                         crit_exit();
 429                         return (EWOULDBLOCK);
 430                 }
 431                 sc->sc_state |= UHID_ASLP;
 432                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
 433                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
 434                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
 435                 if (sc->sc_dying)
 436                         error = EIO;
 437                 if (error) {
 438                         sc->sc_state &= ~UHID_ASLP;
 439                         break;
 440                 }
 441                 if (sc->sc_state & UHID_NEEDCLEAR) {
 442                         DPRINTFN(-1,("uhidread: clearing stall\n"));
 443                         sc->sc_state &= ~UHID_NEEDCLEAR;
 444                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
 445                 }
 446         }
 447         crit_exit();
 448
 449         /* Transfer as many chunks as possible. */
 450         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 451                 length = min(sc->sc_q.c_cc, uio->uio_resid);
 452                 if (length > sizeof(buffer))
 453                         length = sizeof(buffer);
 454
 455                 /* Remove a small chunk from the input queue. */
 456                 (void) q_to_b(&sc->sc_q, buffer, length);
 457                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
 458
 459                 /* Copy the data to the user process. */
 460                 if ((error = uiomove(buffer, length, uio)) != 0)
 461                         break;
 462         }
 463
 464         return (error);
 465 }
 466
 467 int
 468 uhidread(struct dev_read_args *ap)
 469 {
 470         cdev_t dev = ap->a_head.a_dev;
 471         struct uhid_softc *sc;
 472         int error;
 473
 474         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 475
 476         sc->sc_refcnt++;
 477         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
 478         if (--sc->sc_refcnt < 0)
 479                 usb_detach_wakeup(sc->sc_dev);
 480         return (error);
 481 }
 482
 483 int
 484 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
 485 {
 486         int error;
 487         int size;
 488         usbd_status err;
 489
 490         DPRINTFN(1, ("uhidwrite\n"));
 491
 492         if (sc->sc_dying)
 493                 return (EIO);
 494
 495         size = sc->sc_osize;
 496         error = 0;
 497         if (uio->uio_resid != size)
 498                 return (EINVAL);
 499         error = uiomove(sc->sc_obuf, size, uio);
 500         if (!error) {
 501                 if (sc->sc_oid)
 502                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 503                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
 504                 else
 505                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 506                                   0, sc->sc_obuf, size);
 507                 if (err)
 508                         error = EIO;
 509         }
 510
 511         return (error);
 512 }
 513
 514 int
 515 uhidwrite(struct dev_write_args *ap)
 516 {
 517         cdev_t dev = ap->a_head.a_dev;
 518         struct uhid_softc *sc;
 519         int error;
 520
 521         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 522
 523         sc->sc_refcnt++;
 524         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
 525         if (--sc->sc_refcnt < 0)
 526                 usb_detach_wakeup(sc->sc_dev);
 527         return (error);
 528 }
 529
 530 int
 531 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
 532 {
 533         struct usb_ctl_report_desc *rd;
 534         struct usb_ctl_report *re;
 535         int size, id;
 536         usbd_status err;
 537
 538         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
 539
 540         if (sc->sc_dying)
 541                 return (EIO);
 542
 543         switch (cmd) {
 544         case FIOASYNC:
 545                 if (*(int *)addr) {
 546                         if (sc->sc_async != NULL)
 547                                 return (EBUSY);
 548                         sc->sc_async = curproc;
 549                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
 550                 } else
 551                         sc->sc_async = NULL;
 552                 break;
 553
 554         /* XXX this is not the most general solution. */
 555         case TIOCSPGRP:
 556                 if (sc->sc_async == NULL)
 557                         return (EINVAL);
 558                 if (*(int *)addr != sc->sc_async->p_pgid)
 559                         return (EPERM);
 560                 break;
 561
 562         case USB_GET_REPORT_DESC:
 563                 rd = (struct usb_ctl_report_desc *)addr;
 564                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
 565                 rd->ucrd_size = size;
 566                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
 567                 break;
 568
 569         case USB_SET_IMMED:
 570                 if (*(int *)addr) {
 571                         /* XXX should read into ibuf, but does it matter? */
 572                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 573                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
 574                         if (err)
 575                                 return (EOPNOTSUPP);
 576
 577                         sc->sc_state |=  UHID_IMMED;
 578                 } else
 579                         sc->sc_state &= ~UHID_IMMED;
 580                 break;
 581
 582         case USB_GET_REPORT:
 583                 re = (struct usb_ctl_report *)addr;
 584                 switch (re->ucr_report) {
 585                 case UHID_INPUT_REPORT:
 586                         size = sc->sc_isize;
 587                         id = sc->sc_iid;
 588                         break;
 589                 case UHID_OUTPUT_REPORT:
 590                         size = sc->sc_osize;
 591                         id = sc->sc_oid;
 592                         break;
 593                 case UHID_FEATURE_REPORT:
 594                         size = sc->sc_fsize;
 595                         id = sc->sc_fid;
 596                         break;
 597                 default:
 598                         return (EINVAL);
 599                 }
 600                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 601                           size);
 602                 if (err)
 603                         return (EIO);
 604                 break;
 605
 606         case USB_SET_REPORT:
 607                 re = (struct usb_ctl_report *)addr;
 608                 switch (re->ucr_report) {
 609                 case UHID_INPUT_REPORT:
 610                         size = sc->sc_isize;
 611                         id = sc->sc_iid;
 612                         break;
 613                 case UHID_OUTPUT_REPORT:
 614                         size = sc->sc_osize;
 615                         id = sc->sc_oid;
 616                         break;
 617                 case UHID_FEATURE_REPORT:
 618                         size = sc->sc_fsize;
 619                         id = sc->sc_fid;
 620                         break;
 621                 default:
 622                         return (EINVAL);
 623                 }
 624                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 625                           size);
 626                 if (err)
 627                         return (EIO);
 628                 break;
 629
 630         case USB_GET_REPORT_ID:
 631                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 632                 break;
 633
 634         default:
 635                 return (EINVAL);
 636         }
 637         return (0);
 638 }
 639
 640 int
 641 uhidioctl(struct dev_ioctl_args *ap)
 642 {
 643         cdev_t dev = ap->a_head.a_dev;
 644         struct uhid_softc *sc;
 645         int error;
 646
 647         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 648
 649         sc->sc_refcnt++;
 650         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
 651         if (--sc->sc_refcnt < 0)
 652                 usb_detach_wakeup(sc->sc_dev);
 653         return (error);
 654 }
 655
 656 int
 657 uhidpoll(struct dev_poll_args *ap)
 658 {
 659         cdev_t dev = ap->a_head.a_dev;
 660         struct uhid_softc *sc;
 661         int revents = 0;
 662
 663         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 664
 665         if (sc->sc_dying)
 666                 return (EIO);
 667
 668         crit_enter();
 669         if (ap->a_events & (POLLOUT | POLLWRNORM))
 670                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
 671         if (ap->a_events & (POLLIN | POLLRDNORM)) {
 672                 if (sc->sc_q.c_cc > 0)
 673                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
 674                 else
 675                         selrecord(curthread, &sc->sc_rsel);
 676         }
 677         crit_exit();
 678         ap->a_events = revents;
 679         return (0);
 680 }
 681
 682 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
 683