Nuke USB_DECLARE_DRIVER and USB_DECLARE_DRIVER_INIT macros.
[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 1.28 2007/07/02 23:52:05 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 static device_probe_t uhid_match;
159 static device_attach_t uhid_attach;
160 static device_detach_t uhid_detach;
161
162 static devclass_t uhid_devclass;
163
164 static kobj_method_t uhid_methods[] = {
165         DEVMETHOD(device_probe, uhid_match),
166         DEVMETHOD(device_attach, uhid_attach),
167         DEVMETHOD(device_detach, uhid_detach),
168         {0,0}
169 };
170
171 static driver_t uhid_driver = {
172         "uhid",
173         uhid_methods,
174         sizeof(struct uhid_softc)
175 };
176
177 MODULE_DEPEND(uhid, usb, 1, 1, 1);
178
179 static int
180 uhid_match(device_t self)
181 {
182         struct usb_attach_arg *uaa = device_get_ivars(self);
183         usb_interface_descriptor_t *id;
184
185         if (uaa->iface == NULL)
186                 return (UMATCH_NONE);
187         id = usbd_get_interface_descriptor(uaa->iface);
188         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
189                 return (UMATCH_NONE);
190         if (uaa->matchlvl)
191                 return (uaa->matchlvl);
192         return (UMATCH_IFACECLASS_GENERIC);
193 }
194
195 static int
196 uhid_attach(device_t self)
197 {
198         struct uhid_softc *sc = device_get_softc(self);
199         struct usb_attach_arg *uaa = device_get_ivars(self);
200         usbd_interface_handle iface = uaa->iface;
201         usb_interface_descriptor_t *id;
202         usb_endpoint_descriptor_t *ed;
203         int size;
204         void *desc;
205         usbd_status err;
206         char devinfo[1024];
207
208         sc->sc_udev = uaa->device;
209         sc->sc_iface = iface;
210         id = usbd_get_interface_descriptor(iface);
211         usbd_devinfo(uaa->device, 0, devinfo);
212         sc->sc_dev = self;
213         device_set_desc_copy(self, devinfo);
214         kprintf("%s: %s, iclass %d/%d\n", device_get_nameunit(sc->sc_dev),
215                devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
216
217         ed = usbd_interface2endpoint_descriptor(iface, 0);
218         if (ed == NULL) {
219                 kprintf("%s: could not read endpoint descriptor\n",
220                        device_get_nameunit(sc->sc_dev));
221                 sc->sc_dying = 1;
222                 return ENXIO;
223         }
224
225         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
226                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
227                      " bInterval=%d\n",
228                      ed->bLength, ed->bDescriptorType,
229                      ed->bEndpointAddress & UE_ADDR,
230                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
231                      ed->bmAttributes & UE_XFERTYPE,
232                      UGETW(ed->wMaxPacketSize), ed->bInterval));
233
234         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
235             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
236                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
237                 sc->sc_dying = 1;
238                 return ENXIO;
239         }
240
241         sc->sc_ep_addr = ed->bEndpointAddress;
242
243         if (uaa->vendor == USB_VENDOR_WACOM &&
244             uaa->product == USB_PRODUCT_WACOM_GRAPHIRE /* &&
245             uaa->revision == 0x???? */) { /* XXX should use revision */
246                 /* The report descriptor for the Wacom Graphire is broken. */
247                 size = sizeof uhid_graphire_report_descr;
248                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
249                 err = USBD_NORMAL_COMPLETION;
250                 memcpy(desc, uhid_graphire_report_descr, size);
251         } else {
252                 desc = NULL;
253                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
254         }
255
256         if (err) {
257                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
258                 sc->sc_dying = 1;
259                 return ENXIO;
260         }
261
262         (void)usbd_set_idle(iface, 0, 0);
263
264         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
265         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
266         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
267
268         sc->sc_repdesc = desc;
269         sc->sc_repdesc_size = size;
270
271         dev_ops_add(&uhid_ops, -1, device_get_unit(self));
272         make_dev(&uhid_ops, device_get_unit(self),
273                 UID_ROOT, GID_OPERATOR,
274                 0644, "uhid%d", device_get_unit(self));
275
276         return 0;
277 }
278
279 static int
280 uhid_detach(device_t self)
281 {
282         struct uhid_softc *sc = device_get_softc(self);
283
284         DPRINTF(("uhid_detach: sc=%p\n", sc));
285
286         sc->sc_dying = 1;
287         if (sc->sc_intrpipe != NULL)
288                 usbd_abort_pipe(sc->sc_intrpipe);
289
290         if (sc->sc_state & UHID_OPEN) {
291                 crit_enter();
292                 if (--sc->sc_refcnt >= 0) {
293                         /* Wake everyone */
294                         wakeup(&sc->sc_q);
295                         /* Wait for processes to go away. */
296                         usb_detach_wait(sc->sc_dev);
297                 }
298                 crit_exit();
299         }
300
301         dev_ops_remove(&uhid_ops, -1, device_get_unit(self));
302
303         if (sc->sc_repdesc)
304                 kfree(sc->sc_repdesc, M_USBDEV);
305
306         return (0);
307 }
308
309 void
310 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
311 {
312         struct uhid_softc *sc = addr;
313
314 #ifdef USB_DEBUG
315         if (uhiddebug > 5) {
316                 u_int32_t cc, i;
317
318                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
319                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
320                 DPRINTF(("uhid_intr: data ="));
321                 for (i = 0; i < cc; i++)
322                         DPRINTF((" %02x", sc->sc_ibuf[i]));
323                 DPRINTF(("\n"));
324         }
325 #endif
326
327         if (status == USBD_CANCELLED)
328                 return;
329
330         if (status != USBD_NORMAL_COMPLETION) {
331                 DPRINTF(("uhid_intr: status=%d\n", status));
332                 if (status == USBD_STALLED)
333                     sc->sc_state |= UHID_NEEDCLEAR;
334                 return;
335         }
336
337         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
338
339         if (sc->sc_state & UHID_ASLP) {
340                 sc->sc_state &= ~UHID_ASLP;
341                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
342                 wakeup(&sc->sc_q);
343         }
344         selwakeuppri(&sc->sc_rsel, 0);
345         if (sc->sc_async != NULL) {
346                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
347                 ksignal(sc->sc_async, SIGIO);
348         }
349 }
350
351 int
352 uhidopen(struct dev_open_args *ap)
353 {
354         cdev_t dev = ap->a_head.a_dev;
355         struct uhid_softc *sc;
356         usbd_status err;
357
358         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
359         if (sc == NULL)
360                 return (ENXIO);
361
362         DPRINTF(("uhidopen: sc=%p\n", sc));
363
364         if (sc->sc_dying)
365                 return (ENXIO);
366
367         if (sc->sc_state & UHID_OPEN)
368                 return (EBUSY);
369         sc->sc_state |= UHID_OPEN;
370
371         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
372                 sc->sc_state &= ~UHID_OPEN;
373                 return (ENOMEM);
374         }
375
376         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
377         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
378
379         /* Set up interrupt pipe. */
380         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
381                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
382                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
383         if (err) {
384                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
385                          "error=%d\n",err));
386                 kfree(sc->sc_ibuf, M_USBDEV);
387                 kfree(sc->sc_obuf, M_USBDEV);
388                 sc->sc_ibuf = sc->sc_obuf = NULL;
389
390                 sc->sc_state &= ~UHID_OPEN;
391                 return (EIO);
392         }
393
394         sc->sc_state &= ~UHID_IMMED;
395
396         sc->sc_async = 0;
397
398         return (0);
399 }
400
401 int
402 uhidclose(struct dev_close_args *ap)
403 {
404         cdev_t dev = ap->a_head.a_dev;
405         struct uhid_softc *sc;
406
407         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
408
409         DPRINTF(("uhidclose: sc=%p\n", sc));
410
411         /* Disable interrupts. */
412         usbd_abort_pipe(sc->sc_intrpipe);
413         usbd_close_pipe(sc->sc_intrpipe);
414         sc->sc_intrpipe = 0;
415
416         ndflush(&sc->sc_q, sc->sc_q.c_cc);
417         clfree(&sc->sc_q);
418
419         kfree(sc->sc_ibuf, M_USBDEV);
420         kfree(sc->sc_obuf, M_USBDEV);
421         sc->sc_ibuf = sc->sc_obuf = NULL;
422
423         sc->sc_state &= ~UHID_OPEN;
424
425         sc->sc_async = 0;
426
427         return (0);
428 }
429
430 int
431 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
432 {
433         int error = 0;
434         size_t length;
435         u_char buffer[UHID_CHUNK];
436         usbd_status err;
437
438         DPRINTFN(1, ("uhidread\n"));
439         if (sc->sc_state & UHID_IMMED) {
440                 DPRINTFN(1, ("uhidread immed\n"));
441
442                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
443                           sc->sc_iid, buffer, sc->sc_isize);
444                 if (err)
445                         return (EIO);
446                 return (uiomove(buffer, sc->sc_isize, uio));
447         }
448
449         crit_enter();
450         while (sc->sc_q.c_cc == 0) {
451                 if (flag & IO_NDELAY) {
452                         crit_exit();
453                         return (EWOULDBLOCK);
454                 }
455                 sc->sc_state |= UHID_ASLP;
456                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
457                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
458                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
459                 if (sc->sc_dying)
460                         error = EIO;
461                 if (error) {
462                         sc->sc_state &= ~UHID_ASLP;
463                         break;
464                 }
465                 if (sc->sc_state & UHID_NEEDCLEAR) {
466                         DPRINTFN(-1,("uhidread: clearing stall\n"));
467                         sc->sc_state &= ~UHID_NEEDCLEAR;
468                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
469                 }
470         }
471         crit_exit();
472
473         /* Transfer as many chunks as possible. */
474         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
475                 length = min(sc->sc_q.c_cc, uio->uio_resid);
476                 if (length > sizeof(buffer))
477                         length = sizeof(buffer);
478
479                 /* Remove a small chunk from the input queue. */
480                 (void) q_to_b(&sc->sc_q, buffer, length);
481                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
482
483                 /* Copy the data to the user process. */
484                 if ((error = uiomove(buffer, length, uio)) != 0)
485                         break;
486         }
487
488         return (error);
489 }
490
491 int
492 uhidread(struct dev_read_args *ap)
493 {
494         cdev_t dev = ap->a_head.a_dev;
495         struct uhid_softc *sc;
496         int error;
497
498         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
499
500         sc->sc_refcnt++;
501         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
502         if (--sc->sc_refcnt < 0)
503                 usb_detach_wakeup(sc->sc_dev);
504         return (error);
505 }
506
507 int
508 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
509 {
510         int error;
511         int size;
512         usbd_status err;
513
514         DPRINTFN(1, ("uhidwrite\n"));
515
516         if (sc->sc_dying)
517                 return (EIO);
518
519         size = sc->sc_osize;
520         error = 0;
521         if (uio->uio_resid != size)
522                 return (EINVAL);
523         error = uiomove(sc->sc_obuf, size, uio);
524         if (!error) {
525                 if (sc->sc_oid)
526                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
527                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
528                 else
529                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
530                                   0, sc->sc_obuf, size);
531                 if (err)
532                         error = EIO;
533         }
534
535         return (error);
536 }
537
538 int
539 uhidwrite(struct dev_write_args *ap)
540 {
541         cdev_t dev = ap->a_head.a_dev;
542         struct uhid_softc *sc;
543         int error;
544
545         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
546
547         sc->sc_refcnt++;
548         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
549         if (--sc->sc_refcnt < 0)
550                 usb_detach_wakeup(sc->sc_dev);
551         return (error);
552 }
553
554 int
555 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
556 {
557         struct usb_ctl_report_desc *rd;
558         struct usb_ctl_report *re;
559         int size, id;
560         usbd_status err;
561
562         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
563
564         if (sc->sc_dying)
565                 return (EIO);
566
567         switch (cmd) {
568         case FIOASYNC:
569                 if (*(int *)addr) {
570                         if (sc->sc_async != NULL)
571                                 return (EBUSY);
572                         sc->sc_async = curproc;
573                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
574                 } else
575                         sc->sc_async = NULL;
576                 break;
577
578         /* XXX this is not the most general solution. */
579         case TIOCSPGRP:
580                 if (sc->sc_async == NULL)
581                         return (EINVAL);
582                 if (*(int *)addr != sc->sc_async->p_pgid)
583                         return (EPERM);
584                 break;
585
586         case USB_GET_REPORT_DESC:
587                 rd = (struct usb_ctl_report_desc *)addr;
588                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
589                 rd->ucrd_size = size;
590                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
591                 break;
592
593         case USB_SET_IMMED:
594                 if (*(int *)addr) {
595                         /* XXX should read into ibuf, but does it matter? */
596                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
597                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
598                         if (err)
599                                 return (EOPNOTSUPP);
600
601                         sc->sc_state |=  UHID_IMMED;
602                 } else
603                         sc->sc_state &= ~UHID_IMMED;
604                 break;
605
606         case USB_GET_REPORT:
607                 re = (struct usb_ctl_report *)addr;
608                 switch (re->ucr_report) {
609                 case UHID_INPUT_REPORT:
610                         size = sc->sc_isize;
611                         id = sc->sc_iid;
612                         break;
613                 case UHID_OUTPUT_REPORT:
614                         size = sc->sc_osize;
615                         id = sc->sc_oid;
616                         break;
617                 case UHID_FEATURE_REPORT:
618                         size = sc->sc_fsize;
619                         id = sc->sc_fid;
620                         break;
621                 default:
622                         return (EINVAL);
623                 }
624                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
625                           size);
626                 if (err)
627                         return (EIO);
628                 break;
629
630         case USB_SET_REPORT:
631                 re = (struct usb_ctl_report *)addr;
632                 switch (re->ucr_report) {
633                 case UHID_INPUT_REPORT:
634                         size = sc->sc_isize;
635                         id = sc->sc_iid;
636                         break;
637                 case UHID_OUTPUT_REPORT:
638                         size = sc->sc_osize;
639                         id = sc->sc_oid;
640                         break;
641                 case UHID_FEATURE_REPORT:
642                         size = sc->sc_fsize;
643                         id = sc->sc_fid;
644                         break;
645                 default:
646                         return (EINVAL);
647                 }
648                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
649                           size);
650                 if (err)
651                         return (EIO);
652                 break;
653
654         case USB_GET_REPORT_ID:
655                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
656                 break;
657
658         default:
659                 return (EINVAL);
660         }
661         return (0);
662 }
663
664 int
665 uhidioctl(struct dev_ioctl_args *ap)
666 {
667         cdev_t dev = ap->a_head.a_dev;
668         struct uhid_softc *sc;
669         int error;
670
671         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
672
673         sc->sc_refcnt++;
674         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
675         if (--sc->sc_refcnt < 0)
676                 usb_detach_wakeup(sc->sc_dev);
677         return (error);
678 }
679
680 int
681 uhidpoll(struct dev_poll_args *ap)
682 {
683         cdev_t dev = ap->a_head.a_dev;
684         struct uhid_softc *sc;
685         int revents = 0;
686
687         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
688
689         if (sc->sc_dying)
690                 return (EIO);
691
692         crit_enter();
693         if (ap->a_events & (POLLOUT | POLLWRNORM))
694                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
695         if (ap->a_events & (POLLIN | POLLRDNORM)) {
696                 if (sc->sc_q.c_cc > 0)
697                         revents |= ap->a_events & (POLLIN | POLLRDNORM);
698                 else
699                         selrecord(curthread, &sc->sc_rsel);
700         }
701         crit_exit();
702         ap->a_events = revents;
703         return (0);
704 }
705
706 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
707