402dba8f7bb01fc07b9ce14bc9f49283046bad27
[dragonfly.git] / 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 1.27 2007/07/02 06:43:31 hasso Exp $
5  */
6
7 /* Also already merged from NetBSD:
8  *      $NetBSD: uhid.c,v 1.54 2002/09/23 05:51:21 simonb Exp $
9  */
10
11 /*
12  * Copyright (c) 1998 The NetBSD Foundation, Inc.
13  * All rights reserved.
14  *
15  * This code is derived from software contributed to The NetBSD Foundation
16  * by Lennart Augustsson (lennart@augustsson.net) at
17  * Carlstedt Research & Technology.
18  *
19  * Redistribution and use in source and binary forms, with or without
20  * modification, are permitted provided that the following conditions
21  * are met:
22  * 1. Redistributions of source code must retain the above copyright
23  *    notice, this list of conditions and the following disclaimer.
24  * 2. Redistributions in binary form must reproduce the above copyright
25  *    notice, this list of conditions and the following disclaimer in the
26  *    documentation and/or other materials provided with the distribution.
27  * 3. All advertising materials mentioning features or use of this software
28  *    must display the following acknowledgement:
29  *        This product includes software developed by the NetBSD
30  *        Foundation, Inc. and its contributors.
31  * 4. Neither the name of The NetBSD Foundation nor the names of its
32  *    contributors may be used to endorse or promote products derived
33  *    from this software without specific prior written permission.
34  *
35  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
36  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
37  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
39  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
40  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
41  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
42  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
43  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
44  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
45  * POSSIBILITY OF SUCH DAMAGE.
46  */
47
48 /*
49  * HID spec: http://www.usb.org/developers/data/usbhid10.pdf
50  */
51
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/kernel.h>
55 #include <sys/lock.h>
56 #include <sys/malloc.h>
57 #include <sys/signalvar.h>
58 #include <sys/ioccom.h>
59 #include <sys/filio.h>
60 #include <sys/module.h>
61 #include <sys/bus.h>
62 #include <sys/ioccom.h>
63 #include <sys/conf.h>
64 #include <sys/tty.h>
65 #include <sys/select.h>
66 #include <sys/proc.h>
67 #include <sys/vnode.h>
68 #include <sys/poll.h>
69 #include <sys/sysctl.h>
70 #include <sys/thread2.h>
71
72 #include <bus/usb/usb.h>
73 #include <bus/usb/usbhid.h>
74
75 #include <bus/usb/usbdevs.h>
76 #include <bus/usb/usbdi.h>
77 #include <bus/usb/usbdi_util.h>
78 #include <bus/usb/hid.h>
79
80 /* Report descriptor for broken Wacom Graphire */
81 #include <bus/usb/ugraphire_rdesc.h>
82
83 #ifdef USB_DEBUG
84 #define DPRINTF(x)      if (uhiddebug) kprintf x
85 #define DPRINTFN(n,x)   if (uhiddebug>(n)) kprintf x
86 int     uhiddebug = 0;
87 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
88 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
89            &uhiddebug, 0, "uhid debug level");
90 #else
91 #define DPRINTF(x)
92 #define DPRINTFN(n,x)
93 #endif
94
95 struct uhid_softc {
96         device_t sc_dev;                        /* base device */
97         usbd_device_handle sc_udev;
98         usbd_interface_handle sc_iface; /* interface */
99         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
100         int sc_ep_addr;
101
102         int sc_isize;
103         int sc_osize;
104         int sc_fsize;
105         u_int8_t sc_iid;
106         u_int8_t sc_oid;
107         u_int8_t sc_fid;
108
109         u_char *sc_ibuf;
110         u_char *sc_obuf;
111
112         void *sc_repdesc;
113         int sc_repdesc_size;
114
115         struct clist sc_q;
116         struct selinfo sc_rsel;
117         struct proc *sc_async;  /* process that wants SIGIO */
118         u_char sc_state;        /* driver state */
119 #define UHID_OPEN       0x01    /* device is open */
120 #define UHID_ASLP       0x02    /* waiting for device data */
121 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
122 #define UHID_IMMED      0x08    /* return read data immediately */
123
124         int sc_refcnt;
125         u_char sc_dying;
126 };
127
128 #define UHIDUNIT(dev)   (minor(dev))
129 #define UHID_CHUNK      128     /* chunk size for read */
130 #define UHID_BSIZE      1020    /* buffer size */
131
132 d_open_t        uhidopen;
133 d_close_t       uhidclose;
134 d_read_t        uhidread;
135 d_write_t       uhidwrite;
136 d_ioctl_t       uhidioctl;
137 d_poll_t        uhidpoll;
138
139 #define         UHID_CDEV_MAJOR 122
140
141 static struct dev_ops uhid_ops = {
142         { "uhid", UHID_CDEV_MAJOR, 0 },
143         .d_open =       uhidopen,
144         .d_close =      uhidclose,
145         .d_read =       uhidread,
146         .d_write =      uhidwrite,
147         .d_ioctl =      uhidioctl,
148         .d_poll =       uhidpoll,
149 };
150
151 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
152                            usbd_status);
153
154 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
155 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
156 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int);
157
158 USB_DECLARE_DRIVER(uhid);
159
160 static int
161 uhid_match(device_t self)
162 {
163         struct usb_attach_arg *uaa = device_get_ivars(self);
164         usb_interface_descriptor_t *id;
165
166         if (uaa->iface == NULL)
167                 return (UMATCH_NONE);
168         id = usbd_get_interface_descriptor(uaa->iface);
169         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
170                 return (UMATCH_NONE);
171         if (uaa->matchlvl)
172                 return (uaa->matchlvl);
173         return (UMATCH_IFACECLASS_GENERIC);
174 }
175
176 static int
177 uhid_attach(device_t self)
178 {
179         struct uhid_softc *sc = device_get_softc(self);
180         struct usb_attach_arg *uaa = device_get_ivars(self);
181         usbd_interface_handle iface = uaa->iface;
182         usb_interface_descriptor_t *id;
183         usb_endpoint_descriptor_t *ed;
184         int size;
185         void *desc;
186         usbd_status err;
187         char devinfo[1024];
188
189         sc->sc_udev = uaa->device;
190         sc->sc_iface = iface;
191         id = usbd_get_interface_descriptor(iface);
192         usbd_devinfo(uaa->device, 0, devinfo);
193         sc->sc_dev = self;
194         device_set_desc_copy(self, devinfo);
195         kprintf("%s: %s, iclass %d/%d\n", device_get_nameunit(sc->sc_dev),
196                devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
197
198         ed = usbd_interface2endpoint_descriptor(iface, 0);
199         if (ed == NULL) {
200                 kprintf("%s: could not read endpoint descriptor\n",
201                        device_get_nameunit(sc->sc_dev));
202                 sc->sc_dying = 1;
203                 return ENXIO;
204         }
205
206         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
207                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
208                      " bInterval=%d\n",
209                      ed->bLength, ed->bDescriptorType,
210                      ed->bEndpointAddress & UE_ADDR,
211                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
212                      ed->bmAttributes & UE_XFERTYPE,
213                      UGETW(ed->wMaxPacketSize), ed->bInterval));
214
215         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
216             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
217                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
218                 sc->sc_dying = 1;
219                 return ENXIO;
220         }
221
222         sc->sc_ep_addr = ed->bEndpointAddress;
223
224         if (uaa->vendor == USB_VENDOR_WACOM &&
225             uaa->product == USB_PRODUCT_WACOM_GRAPHIRE /* &&
226             uaa->revision == 0x???? */) { /* XXX should use revision */
227                 /* The report descriptor for the Wacom Graphire is broken. */
228                 size = sizeof uhid_graphire_report_descr;
229                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
230                 err = USBD_NORMAL_COMPLETION;
231                 memcpy(desc, uhid_graphire_report_descr, size);
232         } else {
233                 desc = NULL;
234                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
235         }
236
237         if (err) {
238                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
239                 sc->sc_dying = 1;
240                 return ENXIO;
241         }
242
243         (void)usbd_set_idle(iface, 0, 0);
244
245         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
246         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
247         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
248
249         sc->sc_repdesc = desc;
250         sc->sc_repdesc_size = size;
251
252         dev_ops_add(&uhid_ops, -1, device_get_unit(self));
253         make_dev(&uhid_ops, device_get_unit(self),
254                 UID_ROOT, GID_OPERATOR,
255                 0644, "uhid%d", device_get_unit(self));
256
257         return 0;
258 }
259
260 static int
261 uhid_detach(device_t self)
262 {
263         struct uhid_softc *sc = device_get_softc(self);
264
265         DPRINTF(("uhid_detach: sc=%p\n", sc));
266
267         sc->sc_dying = 1;
268         if (sc->sc_intrpipe != NULL)
269                 usbd_abort_pipe(sc->sc_intrpipe);
270
271         if (sc->sc_state & UHID_OPEN) {
272                 crit_enter();
273                 if (--sc->sc_refcnt >= 0) {
274                         /* Wake everyone */
275                         wakeup(&sc->sc_q);
276                         /* Wait for processes to go away. */
277                         usb_detach_wait(sc->sc_dev);
278                 }
279                 crit_exit();
280         }
281
282         dev_ops_remove(&uhid_ops, -1, device_get_unit(self));
283
284         if (sc->sc_repdesc)
285                 kfree(sc->sc_repdesc, M_USBDEV);
286
287         return (0);
288 }
289
290 void
291 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
292 {
293         struct uhid_softc *sc = addr;
294
295 #ifdef USB_DEBUG
296         if (uhiddebug > 5) {
297                 u_int32_t cc, i;
298
299                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
300                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
301                 DPRINTF(("uhid_intr: data ="));
302                 for (i = 0; i < cc; i++)
303                         DPRINTF((" %02x", sc->sc_ibuf[i]));
304                 DPRINTF(("\n"));
305         }
306 #endif
307
308         if (status == USBD_CANCELLED)
309                 return;
310
311         if (status != USBD_NORMAL_COMPLETION) {
312                 DPRINTF(("uhid_intr: status=%d\n", status));
313                 if (status == USBD_STALLED)
314                     sc->sc_state |= UHID_NEEDCLEAR;
315                 return;
316         }
317
318         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
319
320         if (sc->sc_state & UHID_ASLP) {
321                 sc->sc_state &= ~UHID_ASLP;
322                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
323                 wakeup(&sc->sc_q);
324         }
325         selwakeuppri(&sc->sc_rsel, 0);
326         if (sc->sc_async != NULL) {
327                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
328                 ksignal(sc->sc_async, SIGIO);
329         }
330 }
331
332 int
333 uhidopen(struct dev_open_args *ap)
334 {
335         cdev_t dev = ap->a_head.a_dev;
336         struct uhid_softc *sc;
337         usbd_status err;
338
339         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
340         if (sc == NULL)
341                 return (ENXIO);
342
343         DPRINTF(("uhidopen: sc=%p\n", sc));
344
345         if (sc->sc_dying)
346                 return (ENXIO);
347
348         if (sc->sc_state & UHID_OPEN)
349                 return (EBUSY);
350         sc->sc_state |= UHID_OPEN;
351
352         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
353                 sc->sc_state &= ~UHID_OPEN;
354                 return (ENOMEM);
355         }
356
357         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
358         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
359
360         /* Set up interrupt pipe. */
361         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
362                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
363                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
364         if (err) {
365                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
366                          "error=%d\n",err));
367                 kfree(sc->sc_ibuf, M_USBDEV);
368                 kfree(sc->sc_obuf, M_USBDEV);
369                 sc->sc_ibuf = sc->sc_obuf = NULL;
370
371                 sc->sc_state &= ~UHID_OPEN;
372                 return (EIO);
373         }
374
375         sc->sc_state &= ~UHID_IMMED;
376
377         sc->sc_async = 0;
378
379         return (0);
380 }
381
382 int
383 uhidclose(struct dev_close_args *ap)
384 {
385         cdev_t dev = ap->a_head.a_dev;
386         struct uhid_softc *sc;
387
388         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
389
390         DPRINTF(("uhidclose: sc=%p\n", sc));
391
392         /* Disable interrupts. */
393         usbd_abort_pipe(sc->sc_intrpipe);
394         usbd_close_pipe(sc->sc_intrpipe);
395         sc->sc_intrpipe = 0;
396
397         ndflush(&sc->sc_q, sc->sc_q.c_cc);
398         clfree(&sc->sc_q);
399
400         kfree(sc->sc_ibuf, M_USBDEV);
401         kfree(sc->sc_obuf, M_USBDEV);
402         sc->sc_ibuf = sc->sc_obuf = NULL;
403
404         sc->sc_state &= ~UHID_OPEN;
405
406         sc->sc_async = 0;
407
408         return (0);
409 }
410
411 int
412 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
413 {
414         int error = 0;
415         size_t length;
416         u_char buffer[UHID_CHUNK];
417         usbd_status err;
418
419         DPRINTFN(1, ("uhidread\n"));
420         if (sc->sc_state & UHID_IMMED) {
421                 DPRINTFN(1, ("uhidread immed\n"));
422
423                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
424                           sc->sc_iid, buffer, sc->sc_isize);
425                 if (err)
426                         return (EIO);
427                 return (uiomove(buffer, sc->sc_isize, uio));
428         }
429
430         crit_enter();
431         while (sc->sc_q.c_cc == 0) {
432                 if (flag & IO_NDELAY) {
433                         crit_exit();
434                         return (EWOULDBLOCK);
435                 }
436                 sc->sc_state |= UHID_ASLP;
437                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
438                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
439                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
440                 if (sc->sc_dying)
441                         error = EIO;
442                 if (error) {
443                         sc->sc_state &= ~UHID_ASLP;
444                         break;
445                 }
446                 if (sc->sc_state & UHID_NEEDCLEAR) {
447                         DPRINTFN(-1,("uhidread: clearing stall\n"));
448                         sc->sc_state &= ~UHID_NEEDCLEAR;
449                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
450                 }
451         }
452         crit_exit();
453
454         /* Transfer as many chunks as possible. */
455         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
456                 length = min(sc->sc_q.c_cc, uio->uio_resid);
457                 if (length > sizeof(buffer))
458                         length = sizeof(buffer);
459
460                 /* Remove a small chunk from the input queue. */
461                 (void) q_to_b(&sc->sc_q, buffer, length);
462                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
463
464                 /* Copy the data to the user process. */
465                 if ((error = uiomove(buffer, length, uio)) != 0)
466                         break;
467         }
468
469         return (error);
470 }
471
472 int
473 uhidread(struct dev_read_args *ap)
474 {
475         cdev_t dev = ap->a_head.a_dev;
476         struct uhid_softc *sc;
477         int error;
478
479         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
480
481         sc->sc_refcnt++;
482         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
483         if (--sc->sc_refcnt < 0)
484                 usb_detach_wakeup(sc->sc_dev);
485         return (error);
486 }
487
488 int
489 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
490 {
491         int error;
492         int size;
493         usbd_status err;
494
495         DPRINTFN(1, ("uhidwrite\n"));
496
497         if (sc->sc_dying)
498                 return (EIO);
499
500         size = sc->sc_osize;
501         error = 0;
502         if (uio->uio_resid != size)
503                 return (EINVAL);
504         error = uiomove(sc->sc_obuf, size, uio);
505         if (!error) {
506                 if (sc->sc_oid)
507                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
508                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
509                 else
510                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
511                                   0, sc->sc_obuf, size);
512                 if (err)
513                         error = EIO;
514         }
515
516         return (error);
517 }
518
519 int
520 uhidwrite(struct dev_write_args *ap)
521 {
522         cdev_t dev = ap->a_head.a_dev;
523         struct uhid_softc *sc;
524         int error;
525
526         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
527
528         sc->sc_refcnt++;
529         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
530         if (--sc->sc_refcnt < 0)
531                 usb_detach_wakeup(sc->sc_dev);
532         return (error);
533 }
534
535 int
536 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
537 {
538         struct usb_ctl_report_desc *rd;
539         struct usb_ctl_report *re;
540         int size, id;
541         usbd_status err;
542
543         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
544
545         if (sc->sc_dying)
546                 return (EIO);
547
548         switch (cmd) {
549         case FIOASYNC:
550                 if (*(int *)addr) {
551                         if (sc->sc_async != NULL)
552                                 return (EBUSY);
553                         sc->sc_async = curproc;
554                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
555                 } else
556                         sc->sc_async = NULL;
557                 break;
558
559         /* XXX this is not the most general solution. */
560         case TIOCSPGRP:
561                 if (sc->sc_async == NULL)
562                         return (EINVAL);
563                 if (*(int *)addr != sc->sc_async->p_pgid)
564                         return (EPERM);
565                 break;
566
567         case USB_GET_REPORT_DESC:
568                 rd = (struct usb_ctl_report_desc *)addr;
569                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
570                 rd->ucrd_size = size;
571                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
572                 break;
573
574         case USB_SET_IMMED:
575                 if (*(int *)addr) {
576                         /* XXX should read into ibuf, but does it matter? */
577                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
578                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
579                         if (err)
580                                 return (EOPNOTSUPP);
581
582                         sc->sc_state |=  UHID_IMMED;
583                 } else
584                         sc->sc_state &= ~UHID_IMMED;
585                 break;
586
587         case USB_GET_REPORT:
588                 re = (struct usb_ctl_report *)addr;
589                 switch (re->ucr_report) {
590                 case UHID_INPUT_REPORT:
591                         size = sc->sc_isize;
592                         id = sc->sc_iid;
593                         break;
594                 case UHID_OUTPUT_REPORT:
595                         size = sc->sc_osize;
596                         id = sc->sc_oid;
597                         break;
598                 case UHID_FEATURE_REPORT:
599                         size = sc->sc_fsize;
600                         id = sc->sc_fid;
601                         break;
602                 default:
603                         return (EINVAL);
604                 }
605                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
606                           size);
607                 if (err)
608                         return (EIO);
609                 break;
610
611         case USB_SET_REPORT:
612                 re = (struct usb_ctl_report *)addr;
613                 switch (re->ucr_report) {
614                 case UHID_INPUT_REPORT:
615                         size = sc->sc_isize;
616                         id = sc->sc_iid;
617                         break;
618                 case UHID_OUTPUT_REPORT:
619                         size = sc->sc_osize;
620                         id = sc->sc_oid;
621                         break;
622                 case UHID_FEATURE_REPORT:
623                         size = sc->sc_fsize;
624                         id = sc->sc_fid;
625                         break;
626                 default:
627                         return (EINVAL);
628                 }
629                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
630                           size);
631                 if (err)
632                         return (EIO);
633                 break;
634
635         case USB_GET_REPORT_ID:
636                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
637                 break;
638
639         default:
640                 return (EINVAL);
641         }
642         return (0);
643 }
644
645 int
646 uhidioctl(struct dev_ioctl_args *ap)
647 {
648         cdev_t dev = ap->a_head.a_dev;
649         struct uhid_softc *sc;
650         int error;
651
652         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
653
654         sc->sc_refcnt++;
655         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
656         if (--sc->sc_refcnt < 0)
657                 usb_detach_wakeup(sc->sc_dev);
658         return (error);
659 }
660
661 int
662 uhidpoll(struct dev_poll_args *ap)
663 {
664         cdev_t dev = ap->a_head.a_dev;
665         struct uhid_softc *sc;
666         int revents = 0;
667
668         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
669
670         if (sc->sc_dying)
671                 return (EIO);
672
673         crit_enter();
674         if (ap->a_events & (POLLOUT | POLLWRNORM))
675                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
676         if (ap->a_events & (POLLIN | POLLRDNORM)) {
677                 if (sc->sc_q.c_cc > 0)
678                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
679                 else
680                         selrecord(curthread, &sc->sc_rsel);
681         }
682         crit_exit();
683         ap->a_events = revents;
684         return (0);
685 }
686
687 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
688