bd9693acfb089c18347d81eadd35ea936a9297d0
[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 1.33 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/proc.h>
64 #include <sys/vnode.h>
65 #include <sys/event.h>
66 #include <sys/sysctl.h>
67 #include <sys/thread2.h>
68
69 #include <bus/usb/usb.h>
70 #include <bus/usb/usbhid.h>
71
72 #include <bus/usb/usbdi.h>
73 #include <bus/usb/usbdi_util.h>
74 #include <bus/usb/hid.h>
75
76 /* Report descriptor for broken Wacom Graphire */
77 #include <bus/usb/ugraphire_rdesc.h>
78
79 #ifdef USB_DEBUG
80 #define DPRINTF(x)      if (uhiddebug) kprintf x
81 #define DPRINTFN(n,x)   if (uhiddebug>(n)) kprintf x
82 int     uhiddebug = 0;
83 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
84 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
85            &uhiddebug, 0, "uhid debug level");
86 #else
87 #define DPRINTF(x)
88 #define DPRINTFN(n,x)
89 #endif
90
91 struct uhid_softc {
92         device_t sc_dev;                        /* base device */
93         usbd_device_handle sc_udev;
94         usbd_interface_handle sc_iface; /* interface */
95         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
96         int sc_ep_addr;
97
98         int sc_isize;
99         int sc_osize;
100         int sc_fsize;
101         u_int8_t sc_iid;
102         u_int8_t sc_oid;
103         u_int8_t sc_fid;
104
105         u_char *sc_ibuf;
106         u_char *sc_obuf;
107
108         void *sc_repdesc;
109         int sc_repdesc_size;
110
111         struct clist sc_q;
112         struct kqinfo sc_rkq;
113         struct proc *sc_async;  /* process that wants SIGIO */
114         u_char sc_state;        /* driver state */
115 #define UHID_OPEN       0x01    /* device is open */
116 #define UHID_ASLP       0x02    /* waiting for device data */
117 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
118 #define UHID_IMMED      0x08    /* return read data immediately */
119
120         int sc_refcnt;
121         u_char sc_dying;
122 };
123
124 #define UHIDUNIT(dev)   (minor(dev))
125 #define UHID_CHUNK      128     /* chunk size for read */
126 #define UHID_BSIZE      1020    /* buffer size */
127
128 d_open_t        uhidopen;
129 d_close_t       uhidclose;
130 d_read_t        uhidread;
131 d_write_t       uhidwrite;
132 d_ioctl_t       uhidioctl;
133 d_kqfilter_t    uhidkqfilter;
134
135 static void uhidfilt_detach(struct knote *);
136 static int uhidfilt_read(struct knote *, long);
137 static int uhidfilt_write(struct knote *, long);
138
139 #define         UHID_CDEV_MAJOR 122
140
141 static struct dev_ops uhid_ops = {
142         { "uhid", UHID_CDEV_MAJOR, D_KQFILTER },
143         .d_open =       uhidopen,
144         .d_close =      uhidclose,
145         .d_read =       uhidread,
146         .d_write =      uhidwrite,
147         .d_ioctl =      uhidioctl,
148         .d_kqfilter =   uhidkqfilter
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_endpoint_descriptor_t *ed;
202         int size;
203         void *desc;
204         usbd_status err;
205
206         sc->sc_udev = uaa->device;
207         sc->sc_iface = iface;
208         sc->sc_dev = self;
209
210         ed = usbd_interface2endpoint_descriptor(iface, 0);
211         if (ed == NULL) {
212                 kprintf("%s: could not read endpoint descriptor\n",
213                        device_get_nameunit(sc->sc_dev));
214                 sc->sc_dying = 1;
215                 return ENXIO;
216         }
217
218         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
219                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
220                      " bInterval=%d\n",
221                      ed->bLength, ed->bDescriptorType,
222                      ed->bEndpointAddress & UE_ADDR,
223                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
224                      ed->bmAttributes & UE_XFERTYPE,
225                      UGETW(ed->wMaxPacketSize), ed->bInterval));
226
227         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
228             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
229                 kprintf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
230                 sc->sc_dying = 1;
231                 return ENXIO;
232         }
233
234         sc->sc_ep_addr = ed->bEndpointAddress;
235
236         /* The report descriptor for the Wacom Graphire is broken. */
237         if (uaa->vendor == 0x056a && uaa->product == 0x0010 /* &&
238             uaa->revision == 0x???? */) { /* XXX should use revision */
239                 size = sizeof uhid_graphire_report_descr;
240                 desc = kmalloc(size, M_USBDEV, M_INTWAIT);
241                 err = USBD_NORMAL_COMPLETION;
242                 memcpy(desc, uhid_graphire_report_descr, size);
243         } else {
244                 desc = NULL;
245                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
246         }
247
248         if (err) {
249                 kprintf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
250                 sc->sc_dying = 1;
251                 return ENXIO;
252         }
253
254         (void)usbd_set_idle(iface, 0, 0);
255
256         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
257         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
258         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
259
260         sc->sc_repdesc = desc;
261         sc->sc_repdesc_size = size;
262
263         make_dev(&uhid_ops, device_get_unit(self),
264                  UID_ROOT, GID_OPERATOR,
265                  0644, "uhid%d", device_get_unit(self));
266
267         return 0;
268 }
269
270 static int
271 uhid_detach(device_t self)
272 {
273         struct uhid_softc *sc = device_get_softc(self);
274
275         DPRINTF(("uhid_detach: sc=%p\n", sc));
276
277         sc->sc_dying = 1;
278         if (sc->sc_intrpipe != NULL)
279                 usbd_abort_pipe(sc->sc_intrpipe);
280
281         if (sc->sc_state & UHID_OPEN) {
282                 crit_enter();
283                 if (--sc->sc_refcnt >= 0) {
284                         /* Wake everyone */
285                         wakeup(&sc->sc_q);
286                         /* Wait for processes to go away. */
287                         usb_detach_wait(sc->sc_dev);
288                 }
289                 crit_exit();
290         }
291
292         dev_ops_remove_minor(&uhid_ops, device_get_unit(self));
293
294         if (sc->sc_repdesc)
295                 kfree(sc->sc_repdesc, M_USBDEV);
296
297         return (0);
298 }
299
300 void
301 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
302 {
303         struct uhid_softc *sc = addr;
304
305 #ifdef USB_DEBUG
306         if (uhiddebug > 5) {
307                 u_int32_t cc, i;
308
309                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
310                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
311                 DPRINTF(("uhid_intr: data ="));
312                 for (i = 0; i < cc; i++)
313                         DPRINTF((" %02x", sc->sc_ibuf[i]));
314                 DPRINTF(("\n"));
315         }
316 #endif
317
318         if (status == USBD_CANCELLED)
319                 return;
320
321         if (status != USBD_NORMAL_COMPLETION) {
322                 DPRINTF(("uhid_intr: status=%d\n", status));
323                 if (status == USBD_STALLED)
324                     sc->sc_state |= UHID_NEEDCLEAR;
325                 return;
326         }
327
328         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
329
330         if (sc->sc_state & UHID_ASLP) {
331                 sc->sc_state &= ~UHID_ASLP;
332                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
333                 wakeup(&sc->sc_q);
334         }
335         KNOTE(&sc->sc_rkq.ki_note, 0);
336         if (sc->sc_async != NULL) {
337                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
338                 ksignal(sc->sc_async, SIGIO);
339         }
340 }
341
342 int
343 uhidopen(struct dev_open_args *ap)
344 {
345         cdev_t dev = ap->a_head.a_dev;
346         struct uhid_softc *sc;
347         usbd_status err;
348
349         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
350         if (sc == NULL)
351                 return (ENXIO);
352
353         DPRINTF(("uhidopen: sc=%p\n", sc));
354
355         if (sc->sc_dying)
356                 return (ENXIO);
357
358         if (sc->sc_state & UHID_OPEN)
359                 return (EBUSY);
360         sc->sc_state |= UHID_OPEN;
361
362         if ((clist_alloc_cblocks(&sc->sc_q, UHID_BSIZE,
363                                  UHID_BSIZE), 0) == -1) {
364                 sc->sc_state &= ~UHID_OPEN;
365                 return (ENOMEM);
366         }
367
368         sc->sc_ibuf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
369         sc->sc_obuf = kmalloc(sc->sc_osize, M_USBDEV, M_WAITOK);
370
371         /* Set up interrupt pipe. */
372         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
373                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
374                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
375         if (err) {
376                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
377                          "error=%d\n",err));
378                 kfree(sc->sc_ibuf, M_USBDEV);
379                 kfree(sc->sc_obuf, M_USBDEV);
380                 sc->sc_ibuf = sc->sc_obuf = NULL;
381
382                 sc->sc_state &= ~UHID_OPEN;
383                 return (EIO);
384         }
385
386         sc->sc_state &= ~UHID_IMMED;
387
388         sc->sc_async = 0;
389
390         return (0);
391 }
392
393 int
394 uhidclose(struct dev_close_args *ap)
395 {
396         cdev_t dev = ap->a_head.a_dev;
397         struct uhid_softc *sc;
398
399         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
400
401         DPRINTF(("uhidclose: sc=%p\n", sc));
402
403         /* Disable interrupts. */
404         usbd_abort_pipe(sc->sc_intrpipe);
405         usbd_close_pipe(sc->sc_intrpipe);
406         sc->sc_intrpipe = 0;
407
408         ndflush(&sc->sc_q, sc->sc_q.c_cc);
409         clist_free_cblocks(&sc->sc_q);
410
411         kfree(sc->sc_ibuf, M_USBDEV);
412         kfree(sc->sc_obuf, M_USBDEV);
413         sc->sc_ibuf = sc->sc_obuf = NULL;
414
415         sc->sc_state &= ~UHID_OPEN;
416
417         sc->sc_async = 0;
418
419         return (0);
420 }
421
422 int
423 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
424 {
425         int error = 0;
426         size_t length;
427         u_char buffer[UHID_CHUNK];
428         usbd_status err;
429
430         DPRINTFN(1, ("uhidread\n"));
431         if (sc->sc_state & UHID_IMMED) {
432                 DPRINTFN(1, ("uhidread immed\n"));
433
434                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
435                           sc->sc_iid, buffer, sc->sc_isize);
436                 if (err)
437                         return (EIO);
438                 return (uiomove(buffer, sc->sc_isize, uio));
439         }
440
441         crit_enter();
442         while (sc->sc_q.c_cc == 0) {
443                 if (flag & IO_NDELAY) {
444                         crit_exit();
445                         return (EWOULDBLOCK);
446                 }
447                 sc->sc_state |= UHID_ASLP;
448                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
449                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
450                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
451                 if (sc->sc_dying)
452                         error = EIO;
453                 if (error) {
454                         sc->sc_state &= ~UHID_ASLP;
455                         break;
456                 }
457                 if (sc->sc_state & UHID_NEEDCLEAR) {
458                         DPRINTFN(-1,("uhidread: clearing stall\n"));
459                         sc->sc_state &= ~UHID_NEEDCLEAR;
460                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
461                 }
462         }
463         crit_exit();
464
465         /* Transfer as many chunks as possible. */
466         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
467                 length = szmin(sc->sc_q.c_cc, uio->uio_resid);
468                 if (length > sizeof(buffer))
469                         length = sizeof(buffer);
470
471                 /* Remove a small chunk from the input queue. */
472                 (void) q_to_b(&sc->sc_q, buffer, length);
473                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
474
475                 /* Copy the data to the user process. */
476                 if ((error = uiomove(buffer, length, uio)) != 0)
477                         break;
478         }
479
480         return (error);
481 }
482
483 int
484 uhidread(struct dev_read_args *ap)
485 {
486         cdev_t dev = ap->a_head.a_dev;
487         struct uhid_softc *sc;
488         int error;
489
490         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
491
492         sc->sc_refcnt++;
493         error = uhid_do_read(sc, ap->a_uio, ap->a_ioflag);
494         if (--sc->sc_refcnt < 0)
495                 usb_detach_wakeup(sc->sc_dev);
496         return (error);
497 }
498
499 int
500 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
501 {
502         int error;
503         int size;
504         usbd_status err;
505
506         DPRINTFN(1, ("uhidwrite\n"));
507
508         if (sc->sc_dying)
509                 return (EIO);
510
511         size = sc->sc_osize;
512         if (uio->uio_resid != size)
513                 return (EINVAL);
514         error = uiomove(sc->sc_obuf, size, uio);
515         if (!error) {
516                 if (sc->sc_oid)
517                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
518                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
519                 else
520                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
521                                   0, sc->sc_obuf, size);
522                 if (err)
523                         error = EIO;
524         }
525
526         return (error);
527 }
528
529 int
530 uhidwrite(struct dev_write_args *ap)
531 {
532         cdev_t dev = ap->a_head.a_dev;
533         struct uhid_softc *sc;
534         int error;
535
536         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
537
538         sc->sc_refcnt++;
539         error = uhid_do_write(sc, ap->a_uio, ap->a_ioflag);
540         if (--sc->sc_refcnt < 0)
541                 usb_detach_wakeup(sc->sc_dev);
542         return (error);
543 }
544
545 int
546 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag)
547 {
548         struct usb_ctl_report_desc *rd;
549         struct usb_ctl_report *re;
550         int size, id;
551         usbd_status err;
552
553         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
554
555         if (sc->sc_dying)
556                 return (EIO);
557
558         switch (cmd) {
559         case FIOASYNC:
560                 if (*(int *)addr) {
561                         if (sc->sc_async != NULL)
562                                 return (EBUSY);
563                         sc->sc_async = curproc;
564                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
565                 } else
566                         sc->sc_async = NULL;
567                 break;
568
569         /* XXX this is not the most general solution. */
570         case TIOCSPGRP:
571                 if (sc->sc_async == NULL)
572                         return (EINVAL);
573                 if (*(int *)addr != sc->sc_async->p_pgid)
574                         return (EPERM);
575                 break;
576
577         case USB_GET_REPORT_DESC:
578                 rd = (struct usb_ctl_report_desc *)addr;
579                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
580                 rd->ucrd_size = size;
581                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
582                 break;
583
584         case USB_SET_IMMED:
585                 if (*(int *)addr) {
586                         /* XXX should read into ibuf, but does it matter? */
587                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
588                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
589                         if (err)
590                                 return (EOPNOTSUPP);
591
592                         sc->sc_state |=  UHID_IMMED;
593                 } else
594                         sc->sc_state &= ~UHID_IMMED;
595                 break;
596
597         case USB_GET_REPORT:
598                 re = (struct usb_ctl_report *)addr;
599                 switch (re->ucr_report) {
600                 case UHID_INPUT_REPORT:
601                         size = sc->sc_isize;
602                         id = sc->sc_iid;
603                         break;
604                 case UHID_OUTPUT_REPORT:
605                         size = sc->sc_osize;
606                         id = sc->sc_oid;
607                         break;
608                 case UHID_FEATURE_REPORT:
609                         size = sc->sc_fsize;
610                         id = sc->sc_fid;
611                         break;
612                 default:
613                         return (EINVAL);
614                 }
615                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
616                           size);
617                 if (err)
618                         return (EIO);
619                 break;
620
621         case USB_SET_REPORT:
622                 re = (struct usb_ctl_report *)addr;
623                 switch (re->ucr_report) {
624                 case UHID_INPUT_REPORT:
625                         size = sc->sc_isize;
626                         id = sc->sc_iid;
627                         break;
628                 case UHID_OUTPUT_REPORT:
629                         size = sc->sc_osize;
630                         id = sc->sc_oid;
631                         break;
632                 case UHID_FEATURE_REPORT:
633                         size = sc->sc_fsize;
634                         id = sc->sc_fid;
635                         break;
636                 default:
637                         return (EINVAL);
638                 }
639                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
640                           size);
641                 if (err)
642                         return (EIO);
643                 break;
644
645         case USB_GET_REPORT_ID:
646                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
647                 break;
648
649         default:
650                 return (EINVAL);
651         }
652         return (0);
653 }
654
655 int
656 uhidioctl(struct dev_ioctl_args *ap)
657 {
658         cdev_t dev = ap->a_head.a_dev;
659         struct uhid_softc *sc;
660         int error;
661
662         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
663
664         sc->sc_refcnt++;
665         error = uhid_do_ioctl(sc, ap->a_cmd, ap->a_data, ap->a_fflag);
666         if (--sc->sc_refcnt < 0)
667                 usb_detach_wakeup(sc->sc_dev);
668         return (error);
669 }
670
671 static struct filterops uhidfiltops_read =
672         { FILTEROP_ISFD, NULL, uhidfilt_detach, uhidfilt_read };
673 static struct filterops uhidfiltops_write =
674         { FILTEROP_ISFD, NULL, uhidfilt_detach, uhidfilt_write };
675
676 int
677 uhidkqfilter(struct dev_kqfilter_args *ap)
678 {
679         cdev_t dev = ap->a_head.a_dev;
680         struct knote *kn = ap->a_kn;
681         struct uhid_softc *sc;
682         struct klist *klist;
683
684         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
685
686         if (sc->sc_dying) {
687                 ap->a_result = 1;
688                 return (0);
689         }
690
691         ap->a_result = 0;
692
693         switch (kn->kn_filter) {
694         case EVFILT_READ:
695                 kn->kn_fop = &uhidfiltops_read;
696                 kn->kn_hook = (caddr_t)sc;
697                 break;
698         case EVFILT_WRITE:
699                 kn->kn_fop = &uhidfiltops_write;
700                 kn->kn_hook = (caddr_t)sc;
701                 break;
702         default:
703                 ap->a_result = EOPNOTSUPP;
704                 return (0);
705         }
706
707         klist = &sc->sc_rkq.ki_note;
708         knote_insert(klist, kn);
709
710         return (0);
711 }
712
713 static void
714 uhidfilt_detach(struct knote *kn)
715 {
716         cdev_t dev = (cdev_t)kn->kn_hook;
717         struct uhid_softc *sc;
718         struct klist *klist;
719
720         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
721
722         klist = &sc->sc_rkq.ki_note;
723         knote_remove(klist, kn);
724 }
725
726 static int
727 uhidfilt_read(struct knote *kn, long hint)
728 {
729         cdev_t dev = (cdev_t)kn->kn_hook;
730         struct uhid_softc *sc;
731         int ready = 0;
732
733         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
734
735         crit_enter();
736         if (sc->sc_q.c_cc > 0)
737                 ready = 1;
738         crit_exit();
739
740         return (ready);
741 }
742
743 static int
744 uhidfilt_write(struct knote *kn, long hint)
745 {
746         return (1);
747 }
748
749 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
750