Merge from vendor branch LIBSTDC++:
[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 1.8 2004/01/08 18:12:59 asmodai 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 #if __FreeBSD_version >= 500000
58 #include <sys/mutex.h>
59 #endif
60 #include <sys/signalvar.h>
61 #if defined(__NetBSD__) || defined(__OpenBSD__)
62 #include <sys/device.h>
63 #include <sys/ioctl.h>
64 #include <sys/file.h>
65 #elif defined(__FreeBSD__)
66 #include <sys/ioccom.h>
67 #include <sys/filio.h>
68 #include <sys/module.h>
69 #include <sys/bus.h>
70 #include <sys/ioccom.h>
71 #endif
72 #include <sys/conf.h>
73 #include <sys/tty.h>
74 #if __FreeBSD_version >= 500014
75 #include <sys/selinfo.h>
76 #else
77 #include <sys/select.h>
78 #endif
79 #include <sys/proc.h>
80 #include <sys/vnode.h>
81 #include <sys/poll.h>
82 #include <sys/sysctl.h>
83
84 #include <bus/usb/usb.h>
85 #include <bus/usb/usbhid.h>
86
87 #include <bus/usb/usbdevs.h>
88 #include <bus/usb/usbdi.h>
89 #include <bus/usb/usbdi_util.h>
90 #include <bus/usb/hid.h>
91
92 /* Report descriptor for broken Wacom Graphire */
93 #include <bus/usb/ugraphire_rdesc.h>
94
95 #ifdef USB_DEBUG
96 #define DPRINTF(x)      if (uhiddebug) logprintf x
97 #define DPRINTFN(n,x)   if (uhiddebug>(n)) logprintf x
98 int     uhiddebug = 0;
99 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
100 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
101            &uhiddebug, 0, "uhid debug level");
102 #else
103 #define DPRINTF(x)
104 #define DPRINTFN(n,x)
105 #endif
106
107 struct uhid_softc {
108         USBBASEDEVICE sc_dev;                   /* base device */
109         usbd_device_handle sc_udev;
110         usbd_interface_handle sc_iface; /* interface */
111         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
112         int sc_ep_addr;
113
114         int sc_isize;
115         int sc_osize;
116         int sc_fsize;
117         u_int8_t sc_iid;
118         u_int8_t sc_oid;
119         u_int8_t sc_fid;
120
121         u_char *sc_ibuf;
122         u_char *sc_obuf;
123
124         void *sc_repdesc;
125         int sc_repdesc_size;
126
127         struct clist sc_q;
128         struct selinfo sc_rsel;
129         struct proc *sc_async;  /* process that wants SIGIO */
130         u_char sc_state;        /* driver state */
131 #define UHID_OPEN       0x01    /* device is open */
132 #define UHID_ASLP       0x02    /* waiting for device data */
133 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
134 #define UHID_IMMED      0x08    /* return read data immediately */
135
136         int sc_refcnt;
137         u_char sc_dying;
138
139 #if defined(__FreeBSD__)
140         dev_t dev;
141 #endif
142 };
143
144 #define UHIDUNIT(dev)   (minor(dev))
145 #define UHID_CHUNK      128     /* chunk size for read */
146 #define UHID_BSIZE      1020    /* buffer size */
147
148 #if defined(__NetBSD__) || defined(__OpenBSD__)
149 cdev_decl(uhid);
150 #elif defined(__FreeBSD__)
151 d_open_t        uhidopen;
152 d_close_t       uhidclose;
153 d_read_t        uhidread;
154 d_write_t       uhidwrite;
155 d_ioctl_t       uhidioctl;
156 d_poll_t        uhidpoll;
157
158 #define         UHID_CDEV_MAJOR 122
159
160 Static struct cdevsw uhid_cdevsw = {
161         /* name */      "uhid",
162         /* maj */       UHID_CDEV_MAJOR,
163         /* flags */     0,
164         /* port */      NULL,
165         /* autoq */     0,
166
167         /* open */      uhidopen,
168         /* close */     uhidclose,
169         /* read */      uhidread,
170         /* write */     uhidwrite,
171         /* ioctl */     uhidioctl,
172         /* poll */      uhidpoll,
173         /* mmap */      nommap,
174         /* strategy */  nostrategy,
175         /* dump */      nodump,
176         /* psize */     nopsize
177 };
178 #endif
179
180 Static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
181                            usbd_status);
182
183 Static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
184 Static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
185 Static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int,
186                               usb_proc_ptr);
187
188 USB_DECLARE_DRIVER(uhid);
189
190 USB_MATCH(uhid)
191 {
192         USB_MATCH_START(uhid, uaa);
193         usb_interface_descriptor_t *id;
194
195         if (uaa->iface == NULL)
196                 return (UMATCH_NONE);
197         id = usbd_get_interface_descriptor(uaa->iface);
198         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
199                 return (UMATCH_NONE);
200         if (uaa->matchlvl)
201                 return (uaa->matchlvl);
202         return (UMATCH_IFACECLASS_GENERIC);
203 }
204
205 USB_ATTACH(uhid)
206 {
207         USB_ATTACH_START(uhid, sc, uaa);
208         usbd_interface_handle iface = uaa->iface;
209         usb_interface_descriptor_t *id;
210         usb_endpoint_descriptor_t *ed;
211         int size;
212         void *desc;
213         usbd_status err;
214         char devinfo[1024];
215
216         sc->sc_udev = uaa->device;
217         sc->sc_iface = iface;
218         id = usbd_get_interface_descriptor(iface);
219         usbd_devinfo(uaa->device, 0, devinfo);
220         USB_ATTACH_SETUP;
221         printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
222                devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
223
224         ed = usbd_interface2endpoint_descriptor(iface, 0);
225         if (ed == NULL) {
226                 printf("%s: could not read endpoint descriptor\n",
227                        USBDEVNAME(sc->sc_dev));
228                 sc->sc_dying = 1;
229                 USB_ATTACH_ERROR_RETURN;
230         }
231
232         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
233                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
234                      " bInterval=%d\n",
235                      ed->bLength, ed->bDescriptorType,
236                      ed->bEndpointAddress & UE_ADDR,
237                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
238                      ed->bmAttributes & UE_XFERTYPE,
239                      UGETW(ed->wMaxPacketSize), ed->bInterval));
240
241         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
242             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
243                 printf("%s: unexpected endpoint\n", USBDEVNAME(sc->sc_dev));
244                 sc->sc_dying = 1;
245                 USB_ATTACH_ERROR_RETURN;
246         }
247
248         sc->sc_ep_addr = ed->bEndpointAddress;
249
250         if (uaa->vendor == USB_VENDOR_WACOM &&
251             uaa->product == USB_PRODUCT_WACOM_GRAPHIRE /* &&
252             uaa->revision == 0x???? */) { /* XXX should use revision */
253                 /* The report descriptor for the Wacom Graphire is broken. */
254                 size = sizeof uhid_graphire_report_descr;
255                 desc = malloc(size, M_USBDEV, M_NOWAIT);
256                 if (desc == NULL)
257                         err = USBD_NOMEM;
258                 else {
259                         err = USBD_NORMAL_COMPLETION;
260                         memcpy(desc, uhid_graphire_report_descr, size);
261                 }
262         } else {
263                 desc = NULL;
264                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
265         }
266
267         if (err) {
268                 printf("%s: no report descriptor\n", USBDEVNAME(sc->sc_dev));
269                 sc->sc_dying = 1;
270                 USB_ATTACH_ERROR_RETURN;
271         }
272
273         (void)usbd_set_idle(iface, 0, 0);
274
275         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
276         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
277         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
278
279         sc->sc_repdesc = desc;
280         sc->sc_repdesc_size = size;
281
282 #if defined(__FreeBSD__)
283         sc->dev = make_dev(&uhid_cdevsw, device_get_unit(self),
284                         UID_ROOT, GID_OPERATOR,
285                         0644, "uhid%d", device_get_unit(self));
286 #endif
287
288         USB_ATTACH_SUCCESS_RETURN;
289 }
290
291 #if defined(__NetBSD__) || defined(__OpenBSD__)
292 int
293 uhid_activate(device_ptr_t self, enum devact act)
294 {
295         struct uhid_softc *sc = (struct uhid_softc *)self;
296
297         switch (act) {
298         case DVACT_ACTIVATE:
299                 return (EOPNOTSUPP);
300
301         case DVACT_DEACTIVATE:
302                 sc->sc_dying = 1;
303                 break;
304         }
305         return (0);
306 }
307 #endif
308
309 USB_DETACH(uhid)
310 {
311         USB_DETACH_START(uhid, sc);
312         int s;
313 #if defined(__NetBSD__) || defined(__OpenBSD__)
314         int maj, mn;
315 #endif
316
317 #if defined(__NetBSD__) || defined(__OpenBSD__)
318         DPRINTF(("uhid_detach: sc=%p flags=%d\n", sc, flags));
319 #else
320         DPRINTF(("uhid_detach: sc=%p\n", sc));
321 #endif
322
323         sc->sc_dying = 1;
324         if (sc->sc_intrpipe != NULL)
325                 usbd_abort_pipe(sc->sc_intrpipe);
326
327         if (sc->sc_state & UHID_OPEN) {
328                 s = splusb();
329                 if (--sc->sc_refcnt >= 0) {
330                         /* Wake everyone */
331                         wakeup(&sc->sc_q);
332                         /* Wait for processes to go away. */
333                         usb_detach_wait(USBDEV(sc->sc_dev));
334                 }
335                 splx(s);
336         }
337
338 #if defined(__NetBSD__) || defined(__OpenBSD__)
339         /* locate the major number */
340         for (maj = 0; maj < nchrdev; maj++)
341                 if (cdevsw[maj].d_open == uhidopen)
342                         break;
343
344         /* Nuke the vnodes for any open instances (calls close). */
345         mn = self->dv_unit;
346         vdevgone(maj, mn, mn, VCHR);
347 #elif defined(__FreeBSD__)
348         destroy_dev(sc->dev);
349 #endif
350
351         if (sc->sc_repdesc)
352                 free(sc->sc_repdesc, M_USBDEV);
353
354         return (0);
355 }
356
357 void
358 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
359 {
360         struct uhid_softc *sc = addr;
361
362 #ifdef USB_DEBUG
363         if (uhiddebug > 5) {
364                 u_int32_t cc, i;
365
366                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
367                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
368                 DPRINTF(("uhid_intr: data ="));
369                 for (i = 0; i < cc; i++)
370                         DPRINTF((" %02x", sc->sc_ibuf[i]));
371                 DPRINTF(("\n"));
372         }
373 #endif
374
375         if (status == USBD_CANCELLED)
376                 return;
377
378         if (status != USBD_NORMAL_COMPLETION) {
379                 DPRINTF(("uhid_intr: status=%d\n", status));
380                 if (status == USBD_STALLED)
381                     sc->sc_state |= UHID_NEEDCLEAR;
382                 return;
383         }
384
385         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
386
387         if (sc->sc_state & UHID_ASLP) {
388                 sc->sc_state &= ~UHID_ASLP;
389                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
390                 wakeup(&sc->sc_q);
391         }
392         selwakeuppri(&sc->sc_rsel, 0);
393         if (sc->sc_async != NULL) {
394                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
395                 PROC_LOCK(sc->sc_async);
396                 psignal(sc->sc_async, SIGIO);
397                 PROC_UNLOCK(sc->sc_async);
398         }
399 }
400
401 int
402 uhidopen(dev_t dev, int flag, int mode, usb_proc_ptr p)
403 {
404         struct uhid_softc *sc;
405         usbd_status err;
406
407         USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
408
409         DPRINTF(("uhidopen: sc=%p\n", sc));
410
411         if (sc->sc_dying)
412                 return (ENXIO);
413
414         if (sc->sc_state & UHID_OPEN)
415                 return (EBUSY);
416         sc->sc_state |= UHID_OPEN;
417
418         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
419                 sc->sc_state &= ~UHID_OPEN;
420                 return (ENOMEM);
421         }
422
423         sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
424         sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
425
426         /* Set up interrupt pipe. */
427         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
428                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
429                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
430         if (err) {
431                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
432                          "error=%d\n",err));
433                 free(sc->sc_ibuf, M_USBDEV);
434                 free(sc->sc_obuf, M_USBDEV);
435                 sc->sc_ibuf = sc->sc_obuf = NULL;
436
437                 sc->sc_state &= ~UHID_OPEN;
438                 return (EIO);
439         }
440
441         sc->sc_state &= ~UHID_IMMED;
442
443         sc->sc_async = 0;
444
445         return (0);
446 }
447
448 int
449 uhidclose(dev_t dev, int flag, int mode, usb_proc_ptr p)
450 {
451         struct uhid_softc *sc;
452
453         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
454
455         DPRINTF(("uhidclose: sc=%p\n", sc));
456
457         /* Disable interrupts. */
458         usbd_abort_pipe(sc->sc_intrpipe);
459         usbd_close_pipe(sc->sc_intrpipe);
460         sc->sc_intrpipe = 0;
461
462         ndflush(&sc->sc_q, sc->sc_q.c_cc);
463         clfree(&sc->sc_q);
464
465         free(sc->sc_ibuf, M_USBDEV);
466         free(sc->sc_obuf, M_USBDEV);
467         sc->sc_ibuf = sc->sc_obuf = NULL;
468
469         sc->sc_state &= ~UHID_OPEN;
470
471         sc->sc_async = 0;
472
473         return (0);
474 }
475
476 int
477 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
478 {
479         int s;
480         int error = 0;
481         size_t length;
482         u_char buffer[UHID_CHUNK];
483         usbd_status err;
484
485         DPRINTFN(1, ("uhidread\n"));
486         if (sc->sc_state & UHID_IMMED) {
487                 DPRINTFN(1, ("uhidread immed\n"));
488
489                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
490                           sc->sc_iid, buffer, sc->sc_isize);
491                 if (err)
492                         return (EIO);
493                 return (uiomove(buffer, sc->sc_isize, uio));
494         }
495
496         s = splusb();
497         while (sc->sc_q.c_cc == 0) {
498                 if (flag & IO_NDELAY) {
499                         splx(s);
500                         return (EWOULDBLOCK);
501                 }
502                 sc->sc_state |= UHID_ASLP;
503                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
504                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
505                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
506                 if (sc->sc_dying)
507                         error = EIO;
508                 if (error) {
509                         sc->sc_state &= ~UHID_ASLP;
510                         break;
511                 }
512                 if (sc->sc_state & UHID_NEEDCLEAR) {
513                         DPRINTFN(-1,("uhidread: clearing stall\n"));
514                         sc->sc_state &= ~UHID_NEEDCLEAR;
515                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
516                 }
517         }
518         splx(s);
519
520         /* Transfer as many chunks as possible. */
521         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
522                 length = min(sc->sc_q.c_cc, uio->uio_resid);
523                 if (length > sizeof(buffer))
524                         length = sizeof(buffer);
525
526                 /* Remove a small chunk from the input queue. */
527                 (void) q_to_b(&sc->sc_q, buffer, length);
528                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
529
530                 /* Copy the data to the user process. */
531                 if ((error = uiomove(buffer, length, uio)) != 0)
532                         break;
533         }
534
535         return (error);
536 }
537
538 int
539 uhidread(dev_t dev, struct uio *uio, int flag)
540 {
541         struct uhid_softc *sc;
542         int error;
543
544         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
545
546         sc->sc_refcnt++;
547         error = uhid_do_read(sc, uio, flag);
548         if (--sc->sc_refcnt < 0)
549                 usb_detach_wakeup(USBDEV(sc->sc_dev));
550         return (error);
551 }
552
553 int
554 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
555 {
556         int error;
557         int size;
558         usbd_status err;
559
560         DPRINTFN(1, ("uhidwrite\n"));
561
562         if (sc->sc_dying)
563                 return (EIO);
564
565         size = sc->sc_osize;
566         error = 0;
567         if (uio->uio_resid != size)
568                 return (EINVAL);
569         error = uiomove(sc->sc_obuf, size, uio);
570         if (!error) {
571                 if (sc->sc_oid)
572                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
573                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
574                 else
575                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
576                                   0, sc->sc_obuf, size);
577                 if (err)
578                         error = EIO;
579         }
580
581         return (error);
582 }
583
584 int
585 uhidwrite(dev_t dev, struct uio *uio, int flag)
586 {
587         struct uhid_softc *sc;
588         int error;
589
590         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
591
592         sc->sc_refcnt++;
593         error = uhid_do_write(sc, uio, flag);
594         if (--sc->sc_refcnt < 0)
595                 usb_detach_wakeup(USBDEV(sc->sc_dev));
596         return (error);
597 }
598
599 int
600 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag,
601               usb_proc_ptr p)
602 {
603         struct usb_ctl_report_desc *rd;
604         struct usb_ctl_report *re;
605         int size, id;
606         usbd_status err;
607
608         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
609
610         if (sc->sc_dying)
611                 return (EIO);
612
613         switch (cmd) {
614         case FIONBIO:
615                 /* All handled in the upper FS layer. */
616                 break;
617
618         case FIOASYNC:
619                 if (*(int *)addr) {
620                         if (sc->sc_async != NULL)
621                                 return (EBUSY);
622 #if defined(__DragonFly__)
623                         sc->sc_async = p->td_proc;
624 #elif __FreeBSD_version >= 500000
625                         sc->sc_async = p->td_proc;
626 #else
627                         sc->sc_async = p;
628 #endif
629                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
630                 } else
631                         sc->sc_async = NULL;
632                 break;
633
634         /* XXX this is not the most general solution. */
635         case TIOCSPGRP:
636                 if (sc->sc_async == NULL)
637                         return (EINVAL);
638                 if (*(int *)addr != sc->sc_async->p_pgid)
639                         return (EPERM);
640                 break;
641
642         case USB_GET_REPORT_DESC:
643                 rd = (struct usb_ctl_report_desc *)addr;
644                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
645                 rd->ucrd_size = size;
646                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
647                 break;
648
649         case USB_SET_IMMED:
650                 if (*(int *)addr) {
651                         /* XXX should read into ibuf, but does it matter? */
652                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
653                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
654                         if (err)
655                                 return (EOPNOTSUPP);
656
657                         sc->sc_state |=  UHID_IMMED;
658                 } else
659                         sc->sc_state &= ~UHID_IMMED;
660                 break;
661
662         case USB_GET_REPORT:
663                 re = (struct usb_ctl_report *)addr;
664                 switch (re->ucr_report) {
665                 case UHID_INPUT_REPORT:
666                         size = sc->sc_isize;
667                         id = sc->sc_iid;
668                         break;
669                 case UHID_OUTPUT_REPORT:
670                         size = sc->sc_osize;
671                         id = sc->sc_oid;
672                         break;
673                 case UHID_FEATURE_REPORT:
674                         size = sc->sc_fsize;
675                         id = sc->sc_fid;
676                         break;
677                 default:
678                         return (EINVAL);
679                 }
680                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
681                           size);
682                 if (err)
683                         return (EIO);
684                 break;
685
686         case USB_SET_REPORT:
687                 re = (struct usb_ctl_report *)addr;
688                 switch (re->ucr_report) {
689                 case UHID_INPUT_REPORT:
690                         size = sc->sc_isize;
691                         id = sc->sc_iid;
692                         break;
693                 case UHID_OUTPUT_REPORT:
694                         size = sc->sc_osize;
695                         id = sc->sc_oid;
696                         break;
697                 case UHID_FEATURE_REPORT:
698                         size = sc->sc_fsize;
699                         id = sc->sc_fid;
700                         break;
701                 default:
702                         return (EINVAL);
703                 }
704                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
705                           size);
706                 if (err)
707                         return (EIO);
708                 break;
709
710         case USB_GET_REPORT_ID:
711                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
712                 break;
713
714         default:
715                 return (EINVAL);
716         }
717         return (0);
718 }
719
720 int
721 uhidioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, usb_proc_ptr p)
722 {
723         struct uhid_softc *sc;
724         int error;
725
726         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
727
728         sc->sc_refcnt++;
729         error = uhid_do_ioctl(sc, cmd, addr, flag, p);
730         if (--sc->sc_refcnt < 0)
731                 usb_detach_wakeup(USBDEV(sc->sc_dev));
732         return (error);
733 }
734
735 int
736 uhidpoll(dev_t dev, int events, usb_proc_ptr p)
737 {
738         struct uhid_softc *sc;
739         int revents = 0;
740         int s;
741
742         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
743
744         if (sc->sc_dying)
745                 return (EIO);
746
747         s = splusb();
748         if (events & (POLLOUT | POLLWRNORM))
749                 revents |= events & (POLLOUT | POLLWRNORM);
750         if (events & (POLLIN | POLLRDNORM)) {
751                 if (sc->sc_q.c_cc > 0)
752                         revents |= events & (POLLIN | POLLRDNORM);
753                 else
754                         selrecord(p, &sc->sc_rsel);
755         }
756
757         splx(s);
758         return (revents);
759 }
760
761 #if defined(__FreeBSD__)
762 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
763 #endif