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 1.25 2007/06/30 20:39:22 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                 ksignal(sc->sc_async, SIGIO);
 324         }
 325 }
 326
 327 int
 328 uhidopen(struct dev_open_args *ap)
 329 {
 330         cdev_t dev = ap->a_head.a_dev;
 331         struct uhid_softc *sc;
 332         usbd_status err;
 333
 334         USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
 335
 336         DPRINTF(("uhidopen: sc=%p\n", sc));
 337
 338         if (sc->sc_dying)
 339                 return (ENXIO);
 340
 341         if (sc->sc_state & UHID_OPEN)
 342                 return (EBUSY);
 343         sc->sc_state |= UHID_OPEN;
 344
 345         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
 346                 sc->sc_state &= ~UHID_OPEN;
 347                 return (ENOMEM);
 348         }
 349
 350         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 351         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
 352
 353         /* Set up interrupt pipe. */
 354         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
 355                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
 356                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
 357         if (err) {
 358                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
 359                          "error=%d\n",err));
 360                 kfree(sc->sc_ibuf, M_USBDEV);
 361                 kfree(sc->sc_obuf, M_USBDEV);
 362                 sc->sc_ibuf = sc->sc_obuf = NULL;
 363
 364                 sc->sc_state &= ~UHID_OPEN;
 365                 return (EIO);
 366         }
 367
 368         sc->sc_state &= ~UHID_IMMED;
 369
 370         sc->sc_async = 0;
 371
 372         return (0);
 373 }
 374
 375 int
 376 uhidclose(struct dev_close_args *ap)
 377 {
 378         cdev_t dev = ap->a_head.a_dev;
 379         struct uhid_softc *sc;
 380
 381         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 382
 383         DPRINTF(("uhidclose: sc=%p\n", sc));
 384
 385         /* Disable interrupts. */
 386         usbd_abort_pipe(sc->sc_intrpipe);
 387         usbd_close_pipe(sc->sc_intrpipe);
 388         sc->sc_intrpipe = 0;
 389
 390         ndflush(&sc->sc_q, sc->sc_q.c_cc);
 391         clfree(&sc->sc_q);
 392
 393         kfree(sc->sc_ibuf, M_USBDEV);
 394         kfree(sc->sc_obuf, M_USBDEV);
 395         sc->sc_ibuf = sc->sc_obuf = NULL;
 396
 397         sc->sc_state &= ~UHID_OPEN;
 398
 399         sc->sc_async = 0;
 400
 401         return (0);
 402 }
 403
 404 int
 405 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
 406 {
 407         int error = 0;
 408         size_t length;
 409         u_char buffer[UHID_CHUNK];
 410         usbd_status err;
 411
 412         DPRINTFN(1, ("uhidread\n"));
 413         if (sc->sc_state & UHID_IMMED) {
 414                 DPRINTFN(1, ("uhidread immed\n"));
 415
 416                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 417                           sc->sc_iid, buffer, sc->sc_isize);
 418                 if (err)
 419                         return (EIO);
 420                 return (uiomove(buffer, sc->sc_isize, uio));
 421         }
 422
 423         crit_enter();
 424         while (sc->sc_q.c_cc == 0) {
 425                 if (flag & IO_NDELAY) {
 426                         crit_exit();
 427                         return (EWOULDBLOCK);
 428                 }
 429                 sc->sc_state |= UHID_ASLP;
 430                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
 431                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
 432                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
 433                 if (sc->sc_dying)
 434                         error = EIO;
 435                 if (error) {
 436                         sc->sc_state &= ~UHID_ASLP;
 437                         break;
 438                 }
 439                 if (sc->sc_state & UHID_NEEDCLEAR) {
 440                         DPRINTFN(-1,("uhidread: clearing stall\n"));
 441                         sc->sc_state &= ~UHID_NEEDCLEAR;
 442                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
 443                 }
 444         }
 445         crit_exit();
 446
 447         /* Transfer as many chunks as possible. */
 448         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 449                 length = min(sc->sc_q.c_cc, uio->uio_resid);
 450                 if (length > sizeof(buffer))
 451                         length = sizeof(buffer);
 452
 453                 /* Remove a small chunk from the input queue. */
 454                 (void) q_to_b(&sc->sc_q, buffer, length);
 455                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
 456
 457                 /* Copy the data to the user process. */
 458                 if ((error = uiomove(buffer, length, uio)) != 0)
 459                         break;
 460         }
 461
 462         return (error);
 463 }
 464
 465 int
 466 uhidread(struct dev_read_args *ap)
 467 {
 468         cdev_t dev = ap->a_head.a_dev;
 469         struct uhid_softc *sc;
 470         int error;
 471
 472         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 473
 474         sc->sc_refcnt++;
 475         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
 476         if (--sc->sc_refcnt < 0)
 477                 usb_detach_wakeup(sc->sc_dev);
 478         return (error);
 479 }
 480
 481 int
 482 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
 483 {
 484         int error;
 485         int size;
 486         usbd_status err;
 487
 488         DPRINTFN(1, ("uhidwrite\n"));
 489
 490         if (sc->sc_dying)
 491                 return (EIO);
 492
 493         size = sc->sc_osize;
 494         error = 0;
 495         if (uio->uio_resid != size)
 496                 return (EINVAL);
 497         error = uiomove(sc->sc_obuf, size, uio);
 498         if (!error) {
 499                 if (sc->sc_oid)
 500                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 501                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
 502                 else
 503                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 504                                   0, sc->sc_obuf, size);
 505                 if (err)
 506                         error = EIO;
 507         }
 508
 509         return (error);
 510 }
 511
 512 int
 513 uhidwrite(struct dev_write_args *ap)
 514 {
 515         cdev_t dev = ap->a_head.a_dev;
 516         struct uhid_softc *sc;
 517         int error;
 518
 519         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 520
 521         sc->sc_refcnt++;
 522         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
 523         if (--sc->sc_refcnt < 0)
 524                 usb_detach_wakeup(sc->sc_dev);
 525         return (error);
 526 }
 527
 528 int
 529 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
 530 {
 531         struct usb_ctl_report_desc *rd;
 532         struct usb_ctl_report *re;
 533         int size, id;
 534         usbd_status err;
 535
 536         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
 537
 538         if (sc->sc_dying)
 539                 return (EIO);
 540
 541         switch (cmd) {
 542         case FIOASYNC:
 543                 if (*(int *)addr) {
 544                         if (sc->sc_async != NULL)
 545                                 return (EBUSY);
 546                         sc->sc_async = curproc;
 547                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
 548                 } else
 549                         sc->sc_async = NULL;
 550                 break;
 551
 552         /* XXX this is not the most general solution. */
 553         case TIOCSPGRP:
 554                 if (sc->sc_async == NULL)
 555                         return (EINVAL);
 556                 if (*(int *)addr != sc->sc_async->p_pgid)
 557                         return (EPERM);
 558                 break;
 559
 560         case USB_GET_REPORT_DESC:
 561                 rd = (struct usb_ctl_report_desc *)addr;
 562                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
 563                 rd->ucrd_size = size;
 564                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
 565                 break;
 566
 567         case USB_SET_IMMED:
 568                 if (*(int *)addr) {
 569                         /* XXX should read into ibuf, but does it matter? */
 570                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 571                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
 572                         if (err)
 573                                 return (EOPNOTSUPP);
 574
 575                         sc->sc_state |=  UHID_IMMED;
 576                 } else
 577                         sc->sc_state &= ~UHID_IMMED;
 578                 break;
 579
 580         case USB_GET_REPORT:
 581                 re = (struct usb_ctl_report *)addr;
 582                 switch (re->ucr_report) {
 583                 case UHID_INPUT_REPORT:
 584                         size = sc->sc_isize;
 585                         id = sc->sc_iid;
 586                         break;
 587                 case UHID_OUTPUT_REPORT:
 588                         size = sc->sc_osize;
 589                         id = sc->sc_oid;
 590                         break;
 591                 case UHID_FEATURE_REPORT:
 592                         size = sc->sc_fsize;
 593                         id = sc->sc_fid;
 594                         break;
 595                 default:
 596                         return (EINVAL);
 597                 }
 598                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 599                           size);
 600                 if (err)
 601                         return (EIO);
 602                 break;
 603
 604         case USB_SET_REPORT:
 605                 re = (struct usb_ctl_report *)addr;
 606                 switch (re->ucr_report) {
 607                 case UHID_INPUT_REPORT:
 608                         size = sc->sc_isize;
 609                         id = sc->sc_iid;
 610                         break;
 611                 case UHID_OUTPUT_REPORT:
 612                         size = sc->sc_osize;
 613                         id = sc->sc_oid;
 614                         break;
 615                 case UHID_FEATURE_REPORT:
 616                         size = sc->sc_fsize;
 617                         id = sc->sc_fid;
 618                         break;
 619                 default:
 620                         return (EINVAL);
 621                 }
 622                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 623                           size);
 624                 if (err)
 625                         return (EIO);
 626                 break;
 627
 628         case USB_GET_REPORT_ID:
 629                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 630                 break;
 631
 632         default:
 633                 return (EINVAL);
 634         }
 635         return (0);
 636 }
 637
 638 int
 639 uhidioctl(struct dev_ioctl_args *ap)
 640 {
 641         cdev_t dev = ap->a_head.a_dev;
 642         struct uhid_softc *sc;
 643         int error;
 644
 645         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 646
 647         sc->sc_refcnt++;
 648         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
 649         if (--sc->sc_refcnt < 0)
 650                 usb_detach_wakeup(sc->sc_dev);
 651         return (error);
 652 }
 653
 654 int
 655 uhidpoll(struct dev_poll_args *ap)
 656 {
 657         cdev_t dev = ap->a_head.a_dev;
 658         struct uhid_softc *sc;
 659         int revents = 0;
 660
 661         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
 662
 663         if (sc->sc_dying)
 664                 return (EIO);
 665
 666         crit_enter();
 667         if (ap->a_events & (POLLOUT | POLLWRNORM))
 668                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
 669         if (ap->a_events & (POLLIN | POLLRDNORM)) {
 670                 if (sc->sc_q.c_cc > 0)
 671                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
 672                 else
 673                         selrecord(curthread, &sc->sc_rsel);
 674         }
 675         crit_exit();
 676         ap->a_events = revents;
 677         return (0);
 678 }
 679
 680 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
 681