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 1.33 2008/08/14 20:55:53 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/filio.h>
  59 #include <sys/module.h>
  60 #include <sys/bus.h>
  61 #include <sys/conf.h>
  62 #include <sys/tty.h>
  63 #include <sys/select.h>
  64 #include <sys/proc.h>
  65 #include <sys/vnode.h>
  66 #include <sys/poll.h>
  67 #include <sys/sysctl.h>
  68 #include <sys/thread2.h>
  69
  70 #include <bus/usb/usb.h>
  71 #include <bus/usb/usbhid.h>
  72
  73 #include <bus/usb/usbdi.h>
  74 #include <bus/usb/usbdi_util.h>
  75 #include <bus/usb/hid.h>
  76
  77 /* Report descriptor for broken Wacom Graphire */
  78 #include <bus/usb/ugraphire_rdesc.h>
  79
  80 #ifdef USB_DEBUG
  81 #define DPRINTF(x)      if (uhiddebug) kprintf x
  82 #define DPRINTFN(n,x)   if (uhiddebug>(n)) kprintf x
  83 int     uhiddebug = 0;
  84 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
  85 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
  86            &uhiddebug, 0, "uhid debug level");
  87 #else
  88 #define DPRINTF(x)
  89 #define DPRINTFN(n,x)
  90 #endif
  91
  92 struct uhid_softc {
  93         device_t sc_dev;                        /* base device */
  94         usbd_device_handle sc_udev;
  95         usbd_interface_handle sc_iface; /* interface */
  96         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
  97         int sc_ep_addr;
  98
  99         int sc_isize;
 100         int sc_osize;
 101         int sc_fsize;
 102         u_int8_t sc_iid;
 103         u_int8_t sc_oid;
 104         u_int8_t sc_fid;
 105
 106         u_char *sc_ibuf;
 107         u_char *sc_obuf;
 108
 109         void *sc_repdesc;
 110         int sc_repdesc_size;
 111
 112         struct clist sc_q;
 113         struct selinfo sc_rsel;
 114         struct proc *sc_async;  /* process that wants SIGIO */
 115         u_char sc_state;        /* driver state */
 116 #define UHID_OPEN       0x01    /* device is open */
 117 #define UHID_ASLP       0x02    /* waiting for device data */
 118 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
 119 #define UHID_IMMED      0x08    /* return read data immediately */
 120
 121         int sc_refcnt;
 122         u_char sc_dying;
 123 };
 124
 125 #define UHIDUNIT(dev)   (minor(dev))
 126 #define UHID_CHUNK      128     /* chunk size for read */
 127 #define UHID_BSIZE      1020    /* buffer size */
 128
 129 d_open_t        uhidopen;
 130 d_close_t       uhidclose;
 131 d_read_t        uhidread;
 132 d_write_t       uhidwrite;
 133 d_ioctl_t       uhidioctl;
 134 d_poll_t        uhidpoll;
 135
 136 #define         UHID_CDEV_MAJOR 122
 137
 138 static struct dev_ops uhid_ops = {
 139         { "uhid", UHID_CDEV_MAJOR, 0 },
 140         .d_open =       uhidopen,
 141         .d_close =      uhidclose,
 142         .d_read =       uhidread,
 143         .d_write =      uhidwrite,
 144         .d_ioctl =      uhidioctl,
 145         .d_poll =       uhidpoll,
 146 };
 147
 148 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
 149                            usbd_status);
 150
 151 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
 152 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
 153 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int);
 154
 155 static device_probe_t uhid_match;
 156 static device_attach_t uhid_attach;
 157 static device_detach_t uhid_detach;
 158
 159 static devclass_t uhid_devclass;
 160
 161 static kobj_method_t uhid_methods[] = {
 162         DEVMETHOD(device_probe, uhid_match),
 163         DEVMETHOD(device_attach, uhid_attach),
 164         DEVMETHOD(device_detach, uhid_detach),
 165         {0,0}
 166 };
 167
 168 static driver_t uhid_driver = {
 169         "uhid",
 170         uhid_methods,
 171         sizeof(struct uhid_softc)
 172 };
 173
 174 MODULE_DEPEND(uhid, usb, 1, 1, 1);
 175
 176 static int
 177 uhid_match(device_t self)
 178 {
 179         struct usb_attach_arg *uaa = device_get_ivars(self);
 180         usb_interface_descriptor_t *id;
 181
 182         if (uaa->iface == NULL)
 183                 return (UMATCH_NONE);
 184         id = usbd_get_interface_descriptor(uaa->iface);
 185         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
 186                 return (UMATCH_NONE);
 187         if (uaa->matchlvl)
 188                 return (uaa->matchlvl);
 189         return (UMATCH_IFACECLASS_GENERIC);
 190 }
 191
 192 static int
 193 uhid_attach(device_t self)
 194 {
 195         struct uhid_softc *sc = device_get_softc(self);
 196         struct usb_attach_arg *uaa = device_get_ivars(self);
 197         usbd_interface_handle iface = uaa->iface;
 198         usb_endpoint_descriptor_t *ed;
 199         int size;
 200         void *desc;
 201         usbd_status err;
 202
 203         sc->sc_udev = uaa->device;
 204         sc->sc_iface = iface;
 205         sc->sc_dev = self;
 206
 207         ed = usbd_interface2endpoint_descriptor(iface, 0);
 208         if (ed == NULL) {
 209                 kprintf("%s: could not read endpoint descriptor\n",
 210                        device_get_nameunit(sc->sc_dev));
 211                 sc->sc_dying = 1;
 212                 return ENXIO;
 213         }
 214
 215         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
 216                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
 217                      " bInterval=%d\n",
 218                      ed->bLength, ed->bDescriptorType,
 219                      ed->bEndpointAddress & UE_ADDR,
 220                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
 221                      ed->bmAttributes & UE_XFERTYPE,
 222                      UGETW(ed->wMaxPacketSize), ed->bInterval));
 223
 224         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
 225             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 226                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
 227                 sc->sc_dying = 1;
 228                 return ENXIO;
 229         }
 230
 231         sc->sc_ep_addr = ed->bEndpointAddress;
 232
 233         /* The report descriptor for the Wacom Graphire is broken. */
 234         if (uaa->vendor == 0x056a && uaa->product == 0x0010 /* &&
 235             uaa->revision == 0x???? */) { /* XXX should use revision */
 236                 size = sizeof uhid_graphire_report_descr;
 237                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
 238                 err = USBD_NORMAL_COMPLETION;
 239                 memcpy(desc, uhid_graphire_report_descr, size);
 240         } else {
 241                 desc = NULL;
 242                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
 243         }
 244
 245         if (err) {
 246                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
 247                 sc->sc_dying = 1;
 248                 return ENXIO;
 249         }
 250
 251         (void)usbd_set_idle(iface, 0, 0);
 252
 253         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
 254         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
 255         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
 256
 257         sc->sc_repdesc = desc;
 258         sc->sc_repdesc_size = size;
 259
 260         dev_ops_add(&uhid_ops, -1, device_get_unit(self));
 261         make_dev(&uhid_ops, device_get_unit(self),
 262                 UID_ROOT, GID_OPERATOR,
 263                 0644, "uhid%d", device_get_unit(self));
 264
 265         return 0;
 266 }
 267
 268 static int
 269 uhid_detach(device_t self)
 270 {
 271         struct uhid_softc *sc = device_get_softc(self);
 272
 273         DPRINTF(("uhid_detach: sc=%p\n", sc));
 274
 275         sc->sc_dying = 1;
 276         if (sc->sc_intrpipe != NULL)
 277                 usbd_abort_pipe(sc->sc_intrpipe);
 278
 279         if (sc->sc_state & UHID_OPEN) {
 280                 crit_enter();
 281                 if (--sc->sc_refcnt >= 0) {
 282                         /* Wake everyone */
 283                         wakeup(&sc->sc_q);
 284                         /* Wait for processes to go away. */
 285                         usb_detach_wait(sc->sc_dev);
 286                 }
 287                 crit_exit();
 288         }
 289
 290         dev_ops_remove(&uhid_ops, -1, device_get_unit(self));
 291
 292         if (sc->sc_repdesc)
 293                 kfree(sc->sc_repdesc, M_USBDEV);
 294
 295         return (0);
 296 }
 297
 298 void
 299 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 300 {
 301         struct uhid_softc *sc = addr;
 302
 303 #ifdef USB_DEBUG
 304         if (uhiddebug > 5) {
 305                 u_int32_t cc, i;
 306
 307                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
 308                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
 309                 DPRINTF(("uhid_intr: data ="));
 310                 for (i = 0; i < cc; i++)
 311                         DPRINTF((" %02x", sc->sc_ibuf[i]));
 312                 DPRINTF(("\n"));
 313         }
 314 #endif
 315
 316         if (status == USBD_CANCELLED)
 317                 return;
 318
 319         if (status != USBD_NORMAL_COMPLETION) {
 320                 DPRINTF(("uhid_intr: status=%d\n", status));
 321                 if (status == USBD_STALLED)
 322                     sc->sc_state |= UHID_NEEDCLEAR;
 323                 return;
 324         }
 325
 326         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
 327
 328         if (sc->sc_state & UHID_ASLP) {
 329                 sc->sc_state &= ~UHID_ASLP;
 330                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
 331                 wakeup(&sc->sc_q);
 332         }
 333         selwakeup(&sc->sc_rsel);
 334         if (sc->sc_async != NULL) {
 335                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
 336                 ksignal(sc->sc_async, SIGIO);
 337         }
 338 }
 339
 340 int
 341 uhidopen(struct dev_open_args *ap)
 342 {
 343         cdev_t dev = ap->a_head.a_dev;
 344         struct uhid_softc *sc;
 345         usbd_status err;
 346
 347         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 348         if (sc == NULL)
 349                 return (ENXIO);
 350
 351         DPRINTF(("uhidopen: sc=%p\n", sc));
 352
 353         if (sc->sc_dying)
 354                 return (ENXIO);
 355
 356         if (sc->sc_state & UHID_OPEN)
 357                 return (EBUSY);
 358         sc->sc_state |= UHID_OPEN;
 359
 360         if ((clist_alloc_cblocks(&sc->sc_q, UHID_BSIZE,
 361                                  UHID_BSIZE), 0) == -1) {
 362                 sc->sc_state &= ~UHID_OPEN;
 363                 return (ENOMEM);
 364         }
 365
 366         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 367         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
 368
 369         /* Set up interrupt pipe. */
 370         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
 371                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
 372                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
 373         if (err) {
 374                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
 375                          "error=%d\n",err));
 376                 kfree(sc->sc_ibuf, M_USBDEV);
 377                 kfree(sc->sc_obuf, M_USBDEV);
 378                 sc->sc_ibuf = sc->sc_obuf = NULL;
 379
 380                 sc->sc_state &= ~UHID_OPEN;
 381                 return (EIO);
 382         }
 383
 384         sc->sc_state &= ~UHID_IMMED;
 385
 386         sc->sc_async = 0;
 387
 388         return (0);
 389 }
 390
 391 int
 392 uhidclose(struct dev_close_args *ap)
 393 {
 394         cdev_t dev = ap->a_head.a_dev;
 395         struct uhid_softc *sc;
 396
 397         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 398
 399         DPRINTF(("uhidclose: sc=%p\n", sc));
 400
 401         /* Disable interrupts. */
 402         usbd_abort_pipe(sc->sc_intrpipe);
 403         usbd_close_pipe(sc->sc_intrpipe);
 404         sc->sc_intrpipe = 0;
 405
 406         ndflush(&sc->sc_q, sc->sc_q.c_cc);
 407         clist_free_cblocks(&sc->sc_q);
 408
 409         kfree(sc->sc_ibuf, M_USBDEV);
 410         kfree(sc->sc_obuf, M_USBDEV);
 411         sc->sc_ibuf = sc->sc_obuf = NULL;
 412
 413         sc->sc_state &= ~UHID_OPEN;
 414
 415         sc->sc_async = 0;
 416
 417         return (0);
 418 }
 419
 420 int
 421 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
 422 {
 423         int error = 0;
 424         size_t length;
 425         u_char buffer[UHID_CHUNK];
 426         usbd_status err;
 427
 428         DPRINTFN(1, ("uhidread\n"));
 429         if (sc->sc_state & UHID_IMMED) {
 430                 DPRINTFN(1, ("uhidread immed\n"));
 431
 432                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 433                           sc->sc_iid, buffer, sc->sc_isize);
 434                 if (err)
 435                         return (EIO);
 436                 return (uiomove(buffer, sc->sc_isize, uio));
 437         }
 438
 439         crit_enter();
 440         while (sc->sc_q.c_cc == 0) {
 441                 if (flag & IO_NDELAY) {
 442                         crit_exit();
 443                         return (EWOULDBLOCK);
 444                 }
 445                 sc->sc_state |= UHID_ASLP;
 446                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
 447                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
 448                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
 449                 if (sc->sc_dying)
 450                         error = EIO;
 451                 if (error) {
 452                         sc->sc_state &= ~UHID_ASLP;
 453                         break;
 454                 }
 455                 if (sc->sc_state & UHID_NEEDCLEAR) {
 456                         DPRINTFN(-1,("uhidread: clearing stall\n"));
 457                         sc->sc_state &= ~UHID_NEEDCLEAR;
 458                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
 459                 }
 460         }
 461         crit_exit();
 462
 463         /* Transfer as many chunks as possible. */
 464         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 465                 length = min(sc->sc_q.c_cc, uio->uio_resid);
 466                 if (length > sizeof(buffer))
 467                         length = sizeof(buffer);
 468
 469                 /* Remove a small chunk from the input queue. */
 470                 (void) q_to_b(&sc->sc_q, buffer, length);
 471                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
 472
 473                 /* Copy the data to the user process. */
 474                 if ((error = uiomove(buffer, length, uio)) != 0)
 475                         break;
 476         }
 477
 478         return (error);
 479 }
 480
 481 int
 482 uhidread(struct dev_read_args *ap)
 483 {
 484         cdev_t dev = ap->a_head.a_dev;
 485         struct uhid_softc *sc;
 486         int error;
 487
 488         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 489
 490         sc->sc_refcnt++;
 491         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
 492         if (--sc->sc_refcnt < 0)
 493                 usb_detach_wakeup(sc->sc_dev);
 494         return (error);
 495 }
 496
 497 int
 498 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
 499 {
 500         int error;
 501         int size;
 502         usbd_status err;
 503
 504         DPRINTFN(1, ("uhidwrite\n"));
 505
 506         if (sc->sc_dying)
 507                 return (EIO);
 508
 509         size = sc->sc_osize;
 510         if (uio->uio_resid != size)
 511                 return (EINVAL);
 512         error = uiomove(sc->sc_obuf, size, uio);
 513         if (!error) {
 514                 if (sc->sc_oid)
 515                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 516                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
 517                 else
 518                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 519                                   0, sc->sc_obuf, size);
 520                 if (err)
 521                         error = EIO;
 522         }
 523
 524         return (error);
 525 }
 526
 527 int
 528 uhidwrite(struct dev_write_args *ap)
 529 {
 530         cdev_t dev = ap->a_head.a_dev;
 531         struct uhid_softc *sc;
 532         int error;
 533
 534         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 535
 536         sc->sc_refcnt++;
 537         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
 538         if (--sc->sc_refcnt < 0)
 539                 usb_detach_wakeup(sc->sc_dev);
 540         return (error);
 541 }
 542
 543 int
 544 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
 545 {
 546         struct usb_ctl_report_desc *rd;
 547         struct usb_ctl_report *re;
 548         int size, id;
 549         usbd_status err;
 550
 551         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
 552
 553         if (sc->sc_dying)
 554                 return (EIO);
 555
 556         switch (cmd) {
 557         case FIOASYNC:
 558                 if (*(int *)addr) {
 559                         if (sc->sc_async != NULL)
 560                                 return (EBUSY);
 561                         sc->sc_async = curproc;
 562                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
 563                 } else
 564                         sc->sc_async = NULL;
 565                 break;
 566
 567         /* XXX this is not the most general solution. */
 568         case TIOCSPGRP:
 569                 if (sc->sc_async == NULL)
 570                         return (EINVAL);
 571                 if (*(int *)addr != sc->sc_async->p_pgid)
 572                         return (EPERM);
 573                 break;
 574
 575         case USB_GET_REPORT_DESC:
 576                 rd = (struct usb_ctl_report_desc *)addr;
 577                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
 578                 rd->ucrd_size = size;
 579                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
 580                 break;
 581
 582         case USB_SET_IMMED:
 583                 if (*(int *)addr) {
 584                         /* XXX should read into ibuf, but does it matter? */
 585                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 586                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
 587                         if (err)
 588                                 return (EOPNOTSUPP);
 589
 590                         sc->sc_state |=  UHID_IMMED;
 591                 } else
 592                         sc->sc_state &= ~UHID_IMMED;
 593                 break;
 594
 595         case USB_GET_REPORT:
 596                 re = (struct usb_ctl_report *)addr;
 597                 switch (re->ucr_report) {
 598                 case UHID_INPUT_REPORT:
 599                         size = sc->sc_isize;
 600                         id = sc->sc_iid;
 601                         break;
 602                 case UHID_OUTPUT_REPORT:
 603                         size = sc->sc_osize;
 604                         id = sc->sc_oid;
 605                         break;
 606                 case UHID_FEATURE_REPORT:
 607                         size = sc->sc_fsize;
 608                         id = sc->sc_fid;
 609                         break;
 610                 default:
 611                         return (EINVAL);
 612                 }
 613                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 614                           size);
 615                 if (err)
 616                         return (EIO);
 617                 break;
 618
 619         case USB_SET_REPORT:
 620                 re = (struct usb_ctl_report *)addr;
 621                 switch (re->ucr_report) {
 622                 case UHID_INPUT_REPORT:
 623                         size = sc->sc_isize;
 624                         id = sc->sc_iid;
 625                         break;
 626                 case UHID_OUTPUT_REPORT:
 627                         size = sc->sc_osize;
 628                         id = sc->sc_oid;
 629                         break;
 630                 case UHID_FEATURE_REPORT:
 631                         size = sc->sc_fsize;
 632                         id = sc->sc_fid;
 633                         break;
 634                 default:
 635                         return (EINVAL);
 636                 }
 637                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 638                           size);
 639                 if (err)
 640                         return (EIO);
 641                 break;
 642
 643         case USB_GET_REPORT_ID:
 644                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 645                 break;
 646
 647         default:
 648                 return (EINVAL);
 649         }
 650         return (0);
 651 }
 652
 653 int
 654 uhidioctl(struct dev_ioctl_args *ap)
 655 {
 656         cdev_t dev = ap->a_head.a_dev;
 657         struct uhid_softc *sc;
 658         int error;
 659
 660         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 661
 662         sc->sc_refcnt++;
 663         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
 664         if (--sc->sc_refcnt < 0)
 665                 usb_detach_wakeup(sc->sc_dev);
 666         return (error);
 667 }
 668
 669 int
 670 uhidpoll(struct dev_poll_args *ap)
 671 {
 672         cdev_t dev = ap->a_head.a_dev;
 673         struct uhid_softc *sc;
 674         int revents = 0;
 675
 676         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 677
 678         if (sc->sc_dying)
 679                 return (EIO);
 680
 681         crit_enter();
 682         if (ap->a_events & (POLLOUT | POLLWRNORM))
 683                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
 684         if (ap->a_events & (POLLIN | POLLRDNORM)) {
 685                 if (sc->sc_q.c_cc > 0)
 686                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
 687                 else
 688                         selrecord(curthread, &sc->sc_rsel);
 689         }
 690         crit_exit();
 691         ap->a_events = revents;
 692         return (0);
 693 }
 694
 695 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
 696