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 1.32 2007/11/06 07:37:01 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/usbdi.h>
  76 #include <bus/usb/usbdi_util.h>
  77 #include <bus/usb/hid.h>
  78
  79 /* Report descriptor for broken Wacom Graphire */
  80 #include <bus/usb/ugraphire_rdesc.h>
  81
  82 #ifdef USB_DEBUG
  83 #define DPRINTF(x)      if (uhiddebug) kprintf x
  84 #define DPRINTFN(n,x)   if (uhiddebug>(n)) kprintf x
  85 int     uhiddebug = 0;
  86 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
  87 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
  88            &uhiddebug, 0, "uhid debug level");
  89 #else
  90 #define DPRINTF(x)
  91 #define DPRINTFN(n,x)
  92 #endif
  93
  94 struct uhid_softc {
  95         device_t sc_dev;                        /* base device */
  96         usbd_device_handle sc_udev;
  97         usbd_interface_handle sc_iface; /* interface */
  98         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
  99         int sc_ep_addr;
 100
 101         int sc_isize;
 102         int sc_osize;
 103         int sc_fsize;
 104         u_int8_t sc_iid;
 105         u_int8_t sc_oid;
 106         u_int8_t sc_fid;
 107
 108         u_char *sc_ibuf;
 109         u_char *sc_obuf;
 110
 111         void *sc_repdesc;
 112         int sc_repdesc_size;
 113
 114         struct clist sc_q;
 115         struct selinfo sc_rsel;
 116         struct proc *sc_async;  /* process that wants SIGIO */
 117         u_char sc_state;        /* driver state */
 118 #define UHID_OPEN       0x01    /* device is open */
 119 #define UHID_ASLP       0x02    /* waiting for device data */
 120 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
 121 #define UHID_IMMED      0x08    /* return read data immediately */
 122
 123         int sc_refcnt;
 124         u_char sc_dying;
 125 };
 126
 127 #define UHIDUNIT(dev)   (minor(dev))
 128 #define UHID_CHUNK      128     /* chunk size for read */
 129 #define UHID_BSIZE      1020    /* buffer size */
 130
 131 d_open_t        uhidopen;
 132 d_close_t       uhidclose;
 133 d_read_t        uhidread;
 134 d_write_t       uhidwrite;
 135 d_ioctl_t       uhidioctl;
 136 d_poll_t        uhidpoll;
 137
 138 #define         UHID_CDEV_MAJOR 122
 139
 140 static struct dev_ops uhid_ops = {
 141         { "uhid", UHID_CDEV_MAJOR, 0 },
 142         .d_open =       uhidopen,
 143         .d_close =      uhidclose,
 144         .d_read =       uhidread,
 145         .d_write =      uhidwrite,
 146         .d_ioctl =      uhidioctl,
 147         .d_poll =       uhidpoll,
 148 };
 149
 150 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
 151                            usbd_status);
 152
 153 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
 154 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
 155 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int);
 156
 157 static device_probe_t uhid_match;
 158 static device_attach_t uhid_attach;
 159 static device_detach_t uhid_detach;
 160
 161 static devclass_t uhid_devclass;
 162
 163 static kobj_method_t uhid_methods[] = {
 164         DEVMETHOD(device_probe, uhid_match),
 165         DEVMETHOD(device_attach, uhid_attach),
 166         DEVMETHOD(device_detach, uhid_detach),
 167         {0,0}
 168 };
 169
 170 static driver_t uhid_driver = {
 171         "uhid",
 172         uhid_methods,
 173         sizeof(struct uhid_softc)
 174 };
 175
 176 MODULE_DEPEND(uhid, usb, 1, 1, 1);
 177
 178 static int
 179 uhid_match(device_t self)
 180 {
 181         struct usb_attach_arg *uaa = device_get_ivars(self);
 182         usb_interface_descriptor_t *id;
 183
 184         if (uaa->iface == NULL)
 185                 return (UMATCH_NONE);
 186         id = usbd_get_interface_descriptor(uaa->iface);
 187         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
 188                 return (UMATCH_NONE);
 189         if (uaa->matchlvl)
 190                 return (uaa->matchlvl);
 191         return (UMATCH_IFACECLASS_GENERIC);
 192 }
 193
 194 static int
 195 uhid_attach(device_t self)
 196 {
 197         struct uhid_softc *sc = device_get_softc(self);
 198         struct usb_attach_arg *uaa = device_get_ivars(self);
 199         usbd_interface_handle iface = uaa->iface;
 200         usb_interface_descriptor_t *id;
 201         usb_endpoint_descriptor_t *ed;
 202         int size;
 203         void *desc;
 204         usbd_status err;
 205
 206         sc->sc_udev = uaa->device;
 207         sc->sc_iface = iface;
 208         id = usbd_get_interface_descriptor(iface);
 209         sc->sc_dev = self;
 210
 211         ed = usbd_interface2endpoint_descriptor(iface, 0);
 212         if (ed == NULL) {
 213                 kprintf("%s: could not read endpoint descriptor\n",
 214                        device_get_nameunit(sc->sc_dev));
 215                 sc->sc_dying = 1;
 216                 return ENXIO;
 217         }
 218
 219         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
 220                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
 221                      " bInterval=%d\n",
 222                      ed->bLength, ed->bDescriptorType,
 223                      ed->bEndpointAddress & UE_ADDR,
 224                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
 225                      ed->bmAttributes & UE_XFERTYPE,
 226                      UGETW(ed->wMaxPacketSize), ed->bInterval));
 227
 228         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
 229             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 230                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
 231                 sc->sc_dying = 1;
 232                 return ENXIO;
 233         }
 234
 235         sc->sc_ep_addr = ed->bEndpointAddress;
 236
 237         /* The report descriptor for the Wacom Graphire is broken. */
 238         if (uaa->vendor == 0x056a && uaa->product == 0x0010 /* &&
 239             uaa->revision == 0x???? */) { /* XXX should use revision */
 240                 size = sizeof uhid_graphire_report_descr;
 241                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
 242                 err = USBD_NORMAL_COMPLETION;
 243                 memcpy(desc, uhid_graphire_report_descr, size);
 244         } else {
 245                 desc = NULL;
 246                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
 247         }
 248
 249         if (err) {
 250                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
 251                 sc->sc_dying = 1;
 252                 return ENXIO;
 253         }
 254
 255         (void)usbd_set_idle(iface, 0, 0);
 256
 257         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
 258         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
 259         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
 260
 261         sc->sc_repdesc = desc;
 262         sc->sc_repdesc_size = size;
 263
 264         dev_ops_add(&uhid_ops, -1, device_get_unit(self));
 265         make_dev(&uhid_ops, device_get_unit(self),
 266                 UID_ROOT, GID_OPERATOR,
 267                 0644, "uhid%d", device_get_unit(self));
 268
 269         return 0;
 270 }
 271
 272 static int
 273 uhid_detach(device_t self)
 274 {
 275         struct uhid_softc *sc = device_get_softc(self);
 276
 277         DPRINTF(("uhid_detach: sc=%p\n", sc));
 278
 279         sc->sc_dying = 1;
 280         if (sc->sc_intrpipe != NULL)
 281                 usbd_abort_pipe(sc->sc_intrpipe);
 282
 283         if (sc->sc_state & UHID_OPEN) {
 284                 crit_enter();
 285                 if (--sc->sc_refcnt >= 0) {
 286                         /* Wake everyone */
 287                         wakeup(&sc->sc_q);
 288                         /* Wait for processes to go away. */
 289                         usb_detach_wait(sc->sc_dev);
 290                 }
 291                 crit_exit();
 292         }
 293
 294         dev_ops_remove(&uhid_ops, -1, device_get_unit(self));
 295
 296         if (sc->sc_repdesc)
 297                 kfree(sc->sc_repdesc, M_USBDEV);
 298
 299         return (0);
 300 }
 301
 302 void
 303 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 304 {
 305         struct uhid_softc *sc = addr;
 306
 307 #ifdef USB_DEBUG
 308         if (uhiddebug > 5) {
 309                 u_int32_t cc, i;
 310
 311                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
 312                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
 313                 DPRINTF(("uhid_intr: data ="));
 314                 for (i = 0; i < cc; i++)
 315                         DPRINTF((" %02x", sc->sc_ibuf[i]));
 316                 DPRINTF(("\n"));
 317         }
 318 #endif
 319
 320         if (status == USBD_CANCELLED)
 321                 return;
 322
 323         if (status != USBD_NORMAL_COMPLETION) {
 324                 DPRINTF(("uhid_intr: status=%d\n", status));
 325                 if (status == USBD_STALLED)
 326                     sc->sc_state |= UHID_NEEDCLEAR;
 327                 return;
 328         }
 329
 330         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
 331
 332         if (sc->sc_state & UHID_ASLP) {
 333                 sc->sc_state &= ~UHID_ASLP;
 334                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
 335                 wakeup(&sc->sc_q);
 336         }
 337         selwakeup(&sc->sc_rsel);
 338         if (sc->sc_async != NULL) {
 339                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
 340                 ksignal(sc->sc_async, SIGIO);
 341         }
 342 }
 343
 344 int
 345 uhidopen(struct dev_open_args *ap)
 346 {
 347         cdev_t dev = ap->a_head.a_dev;
 348         struct uhid_softc *sc;
 349         usbd_status err;
 350
 351         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 352         if (sc == NULL)
 353                 return (ENXIO);
 354
 355         DPRINTF(("uhidopen: sc=%p\n", sc));
 356
 357         if (sc->sc_dying)
 358                 return (ENXIO);
 359
 360         if (sc->sc_state & UHID_OPEN)
 361                 return (EBUSY);
 362         sc->sc_state |= UHID_OPEN;
 363
 364         if ((clist_alloc_cblocks(&sc->sc_q, UHID_BSIZE,
 365                                  UHID_BSIZE), 0) == -1) {
 366                 sc->sc_state &= ~UHID_OPEN;
 367                 return (ENOMEM);
 368         }
 369
 370         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 371         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
 372
 373         /* Set up interrupt pipe. */
 374         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
 375                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
 376                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
 377         if (err) {
 378                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
 379                          "error=%d\n",err));
 380                 kfree(sc->sc_ibuf, M_USBDEV);
 381                 kfree(sc->sc_obuf, M_USBDEV);
 382                 sc->sc_ibuf = sc->sc_obuf = NULL;
 383
 384                 sc->sc_state &= ~UHID_OPEN;
 385                 return (EIO);
 386         }
 387
 388         sc->sc_state &= ~UHID_IMMED;
 389
 390         sc->sc_async = 0;
 391
 392         return (0);
 393 }
 394
 395 int
 396 uhidclose(struct dev_close_args *ap)
 397 {
 398         cdev_t dev = ap->a_head.a_dev;
 399         struct uhid_softc *sc;
 400
 401         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 402
 403         DPRINTF(("uhidclose: sc=%p\n", sc));
 404
 405         /* Disable interrupts. */
 406         usbd_abort_pipe(sc->sc_intrpipe);
 407         usbd_close_pipe(sc->sc_intrpipe);
 408         sc->sc_intrpipe = 0;
 409
 410         ndflush(&sc->sc_q, sc->sc_q.c_cc);
 411         clist_free_cblocks(&sc->sc_q);
 412
 413         kfree(sc->sc_ibuf, M_USBDEV);
 414         kfree(sc->sc_obuf, M_USBDEV);
 415         sc->sc_ibuf = sc->sc_obuf = NULL;
 416
 417         sc->sc_state &= ~UHID_OPEN;
 418
 419         sc->sc_async = 0;
 420
 421         return (0);
 422 }
 423
 424 int
 425 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
 426 {
 427         int error = 0;
 428         size_t length;
 429         u_char buffer[UHID_CHUNK];
 430         usbd_status err;
 431
 432         DPRINTFN(1, ("uhidread\n"));
 433         if (sc->sc_state & UHID_IMMED) {
 434                 DPRINTFN(1, ("uhidread immed\n"));
 435
 436                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 437                           sc->sc_iid, buffer, sc->sc_isize);
 438                 if (err)
 439                         return (EIO);
 440                 return (uiomove(buffer, sc->sc_isize, uio));
 441         }
 442
 443         crit_enter();
 444         while (sc->sc_q.c_cc == 0) {
 445                 if (flag & IO_NDELAY) {
 446                         crit_exit();
 447                         return (EWOULDBLOCK);
 448                 }
 449                 sc->sc_state |= UHID_ASLP;
 450                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
 451                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
 452                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
 453                 if (sc->sc_dying)
 454                         error = EIO;
 455                 if (error) {
 456                         sc->sc_state &= ~UHID_ASLP;
 457                         break;
 458                 }
 459                 if (sc->sc_state & UHID_NEEDCLEAR) {
 460                         DPRINTFN(-1,("uhidread: clearing stall\n"));
 461                         sc->sc_state &= ~UHID_NEEDCLEAR;
 462                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
 463                 }
 464         }
 465         crit_exit();
 466
 467         /* Transfer as many chunks as possible. */
 468         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 469                 length = min(sc->sc_q.c_cc, uio->uio_resid);
 470                 if (length > sizeof(buffer))
 471                         length = sizeof(buffer);
 472
 473                 /* Remove a small chunk from the input queue. */
 474                 (void) q_to_b(&sc->sc_q, buffer, length);
 475                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
 476
 477                 /* Copy the data to the user process. */
 478                 if ((error = uiomove(buffer, length, uio)) != 0)
 479                         break;
 480         }
 481
 482         return (error);
 483 }
 484
 485 int
 486 uhidread(struct dev_read_args *ap)
 487 {
 488         cdev_t dev = ap->a_head.a_dev;
 489         struct uhid_softc *sc;
 490         int error;
 491
 492         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 493
 494         sc->sc_refcnt++;
 495         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
 496         if (--sc->sc_refcnt < 0)
 497                 usb_detach_wakeup(sc->sc_dev);
 498         return (error);
 499 }
 500
 501 int
 502 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
 503 {
 504         int error;
 505         int size;
 506         usbd_status err;
 507
 508         DPRINTFN(1, ("uhidwrite\n"));
 509
 510         if (sc->sc_dying)
 511                 return (EIO);
 512
 513         size = sc->sc_osize;
 514         error = 0;
 515         if (uio->uio_resid != size)
 516                 return (EINVAL);
 517         error = uiomove(sc->sc_obuf, size, uio);
 518         if (!error) {
 519                 if (sc->sc_oid)
 520                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 521                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
 522                 else
 523                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 524                                   0, sc->sc_obuf, size);
 525                 if (err)
 526                         error = EIO;
 527         }
 528
 529         return (error);
 530 }
 531
 532 int
 533 uhidwrite(struct dev_write_args *ap)
 534 {
 535         cdev_t dev = ap->a_head.a_dev;
 536         struct uhid_softc *sc;
 537         int error;
 538
 539         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 540
 541         sc->sc_refcnt++;
 542         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
 543         if (--sc->sc_refcnt < 0)
 544                 usb_detach_wakeup(sc->sc_dev);
 545         return (error);
 546 }
 547
 548 int
 549 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
 550 {
 551         struct usb_ctl_report_desc *rd;
 552         struct usb_ctl_report *re;
 553         int size, id;
 554         usbd_status err;
 555
 556         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
 557
 558         if (sc->sc_dying)
 559                 return (EIO);
 560
 561         switch (cmd) {
 562         case FIOASYNC:
 563                 if (*(int *)addr) {
 564                         if (sc->sc_async != NULL)
 565                                 return (EBUSY);
 566                         sc->sc_async = curproc;
 567                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
 568                 } else
 569                         sc->sc_async = NULL;
 570                 break;
 571
 572         /* XXX this is not the most general solution. */
 573         case TIOCSPGRP:
 574                 if (sc->sc_async == NULL)
 575                         return (EINVAL);
 576                 if (*(int *)addr != sc->sc_async->p_pgid)
 577                         return (EPERM);
 578                 break;
 579
 580         case USB_GET_REPORT_DESC:
 581                 rd = (struct usb_ctl_report_desc *)addr;
 582                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
 583                 rd->ucrd_size = size;
 584                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
 585                 break;
 586
 587         case USB_SET_IMMED:
 588                 if (*(int *)addr) {
 589                         /* XXX should read into ibuf, but does it matter? */
 590                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 591                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
 592                         if (err)
 593                                 return (EOPNOTSUPP);
 594
 595                         sc->sc_state |=  UHID_IMMED;
 596                 } else
 597                         sc->sc_state &= ~UHID_IMMED;
 598                 break;
 599
 600         case USB_GET_REPORT:
 601                 re = (struct usb_ctl_report *)addr;
 602                 switch (re->ucr_report) {
 603                 case UHID_INPUT_REPORT:
 604                         size = sc->sc_isize;
 605                         id = sc->sc_iid;
 606                         break;
 607                 case UHID_OUTPUT_REPORT:
 608                         size = sc->sc_osize;
 609                         id = sc->sc_oid;
 610                         break;
 611                 case UHID_FEATURE_REPORT:
 612                         size = sc->sc_fsize;
 613                         id = sc->sc_fid;
 614                         break;
 615                 default:
 616                         return (EINVAL);
 617                 }
 618                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 619                           size);
 620                 if (err)
 621                         return (EIO);
 622                 break;
 623
 624         case USB_SET_REPORT:
 625                 re = (struct usb_ctl_report *)addr;
 626                 switch (re->ucr_report) {
 627                 case UHID_INPUT_REPORT:
 628                         size = sc->sc_isize;
 629                         id = sc->sc_iid;
 630                         break;
 631                 case UHID_OUTPUT_REPORT:
 632                         size = sc->sc_osize;
 633                         id = sc->sc_oid;
 634                         break;
 635                 case UHID_FEATURE_REPORT:
 636                         size = sc->sc_fsize;
 637                         id = sc->sc_fid;
 638                         break;
 639                 default:
 640                         return (EINVAL);
 641                 }
 642                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 643                           size);
 644                 if (err)
 645                         return (EIO);
 646                 break;
 647
 648         case USB_GET_REPORT_ID:
 649                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 650                 break;
 651
 652         default:
 653                 return (EINVAL);
 654         }
 655         return (0);
 656 }
 657
 658 int
 659 uhidioctl(struct dev_ioctl_args *ap)
 660 {
 661         cdev_t dev = ap->a_head.a_dev;
 662         struct uhid_softc *sc;
 663         int error;
 664
 665         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 666
 667         sc->sc_refcnt++;
 668         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
 669         if (--sc->sc_refcnt < 0)
 670                 usb_detach_wakeup(sc->sc_dev);
 671         return (error);
 672 }
 673
 674 int
 675 uhidpoll(struct dev_poll_args *ap)
 676 {
 677         cdev_t dev = ap->a_head.a_dev;
 678         struct uhid_softc *sc;
 679         int revents = 0;
 680
 681         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 682
 683         if (sc->sc_dying)
 684                 return (EIO);
 685
 686         crit_enter();
 687         if (ap->a_events & (POLLOUT | POLLWRNORM))
 688                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
 689         if (ap->a_events & (POLLIN | POLLRDNORM)) {
 690                 if (sc->sc_q.c_cc > 0)
 691                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
 692                 else
 693                         selrecord(curthread, &sc->sc_rsel);
 694         }
 695         crit_exit();
 696         ap->a_events = revents;
 697         return (0);
 698 }
 699
 700 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
 701