Remove spl*() calls from the bus/ infrastructure, replacing them with
[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 1.14 2005/06/02 20:40:50 dillon 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 defined(__FreeBSD__) && __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__) || defined(__DragonFly__)
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 defined(__FreeBSD__) && __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 #include <sys/thread2.h>
84
85 #include <bus/usb/usb.h>
86 #include <bus/usb/usbhid.h>
87
88 #include <bus/usb/usbdevs.h>
89 #include <bus/usb/usbdi.h>
90 #include <bus/usb/usbdi_util.h>
91 #include <bus/usb/hid.h>
92
93 /* Report descriptor for broken Wacom Graphire */
94 #include <bus/usb/ugraphire_rdesc.h>
95
96 #ifdef USB_DEBUG
97 #define DPRINTF(x)      if (uhiddebug) logprintf x
98 #define DPRINTFN(n,x)   if (uhiddebug>(n)) logprintf x
99 int     uhiddebug = 0;
100 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
101 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
102            &uhiddebug, 0, "uhid debug level");
103 #else
104 #define DPRINTF(x)
105 #define DPRINTFN(n,x)
106 #endif
107
108 struct uhid_softc {
109         USBBASEDEVICE sc_dev;                   /* base device */
110         usbd_device_handle sc_udev;
111         usbd_interface_handle sc_iface; /* interface */
112         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
113         int sc_ep_addr;
114
115         int sc_isize;
116         int sc_osize;
117         int sc_fsize;
118         u_int8_t sc_iid;
119         u_int8_t sc_oid;
120         u_int8_t sc_fid;
121
122         u_char *sc_ibuf;
123         u_char *sc_obuf;
124
125         void *sc_repdesc;
126         int sc_repdesc_size;
127
128         struct clist sc_q;
129         struct selinfo sc_rsel;
130         struct proc *sc_async;  /* process that wants SIGIO */
131         u_char sc_state;        /* driver state */
132 #define UHID_OPEN       0x01    /* device is open */
133 #define UHID_ASLP       0x02    /* waiting for device data */
134 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
135 #define UHID_IMMED      0x08    /* return read data immediately */
136
137         int sc_refcnt;
138         u_char sc_dying;
139 };
140
141 #define UHIDUNIT(dev)   (minor(dev))
142 #define UHID_CHUNK      128     /* chunk size for read */
143 #define UHID_BSIZE      1020    /* buffer size */
144
145 #if defined(__NetBSD__) || defined(__OpenBSD__)
146 cdev_decl(uhid);
147 #elif defined(__FreeBSD__) || defined(__DragonFly__)
148 d_open_t        uhidopen;
149 d_close_t       uhidclose;
150 d_read_t        uhidread;
151 d_write_t       uhidwrite;
152 d_ioctl_t       uhidioctl;
153 d_poll_t        uhidpoll;
154
155 #define         UHID_CDEV_MAJOR 122
156
157 Static struct cdevsw uhid_cdevsw = {
158         /* name */      "uhid",
159         /* maj */       UHID_CDEV_MAJOR,
160         /* flags */     0,
161         /* port */      NULL,
162         /* clone */     NULL,
163
164         /* open */      uhidopen,
165         /* close */     uhidclose,
166         /* read */      uhidread,
167         /* write */     uhidwrite,
168         /* ioctl */     uhidioctl,
169         /* poll */      uhidpoll,
170         /* mmap */      nommap,
171         /* strategy */  nostrategy,
172         /* dump */      nodump,
173         /* psize */     nopsize
174 };
175 #endif
176
177 Static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
178                            usbd_status);
179
180 Static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
181 Static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
182 Static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int,
183                               usb_proc_ptr);
184
185 USB_DECLARE_DRIVER(uhid);
186
187 USB_MATCH(uhid)
188 {
189         USB_MATCH_START(uhid, uaa);
190         usb_interface_descriptor_t *id;
191
192         if (uaa->iface == NULL)
193                 return (UMATCH_NONE);
194         id = usbd_get_interface_descriptor(uaa->iface);
195         if (id == NULL || id->bInterfaceClass != UICLASS_HID)
196                 return (UMATCH_NONE);
197         if (uaa->matchlvl)
198                 return (uaa->matchlvl);
199         return (UMATCH_IFACECLASS_GENERIC);
200 }
201
202 USB_ATTACH(uhid)
203 {
204         USB_ATTACH_START(uhid, sc, uaa);
205         usbd_interface_handle iface = uaa->iface;
206         usb_interface_descriptor_t *id;
207         usb_endpoint_descriptor_t *ed;
208         int size;
209         void *desc;
210         usbd_status err;
211         char devinfo[1024];
212
213         sc->sc_udev = uaa->device;
214         sc->sc_iface = iface;
215         id = usbd_get_interface_descriptor(iface);
216         usbd_devinfo(uaa->device, 0, devinfo);
217         USB_ATTACH_SETUP;
218         printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
219                devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
220
221         ed = usbd_interface2endpoint_descriptor(iface, 0);
222         if (ed == NULL) {
223                 printf("%s: could not read endpoint descriptor\n",
224                        USBDEVNAME(sc->sc_dev));
225                 sc->sc_dying = 1;
226                 USB_ATTACH_ERROR_RETURN;
227         }
228
229         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
230                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
231                      " bInterval=%d\n",
232                      ed->bLength, ed->bDescriptorType,
233                      ed->bEndpointAddress & UE_ADDR,
234                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
235                      ed->bmAttributes & UE_XFERTYPE,
236                      UGETW(ed->wMaxPacketSize), ed->bInterval));
237
238         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
239             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
240                 printf("%s: unexpected endpoint\n", USBDEVNAME(sc->sc_dev));
241                 sc->sc_dying = 1;
242                 USB_ATTACH_ERROR_RETURN;
243         }
244
245         sc->sc_ep_addr = ed->bEndpointAddress;
246
247         if (uaa->vendor == USB_VENDOR_WACOM &&
248             uaa->product == USB_PRODUCT_WACOM_GRAPHIRE /* &&
249             uaa->revision == 0x???? */) { /* XXX should use revision */
250                 /* The report descriptor for the Wacom Graphire is broken. */
251                 size = sizeof uhid_graphire_report_descr;
252                 desc = malloc(size, M_USBDEV, M_INTWAIT);
253                 err = USBD_NORMAL_COMPLETION;
254                 memcpy(desc, uhid_graphire_report_descr, size);
255         } else {
256                 desc = NULL;
257                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
258         }
259
260         if (err) {
261                 printf("%s: no report descriptor\n", USBDEVNAME(sc->sc_dev));
262                 sc->sc_dying = 1;
263                 USB_ATTACH_ERROR_RETURN;
264         }
265
266         (void)usbd_set_idle(iface, 0, 0);
267
268         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
269         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
270         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
271
272         sc->sc_repdesc = desc;
273         sc->sc_repdesc_size = size;
274
275 #if defined(__FreeBSD__) || defined(__DragonFly__)
276         cdevsw_add(&uhid_cdevsw, -1, device_get_unit(self));
277         make_dev(&uhid_cdevsw, device_get_unit(self),
278                 UID_ROOT, GID_OPERATOR,
279                 0644, "uhid%d", device_get_unit(self));
280 #endif
281
282         USB_ATTACH_SUCCESS_RETURN;
283 }
284
285 #if defined(__NetBSD__) || defined(__OpenBSD__)
286 int
287 uhid_activate(device_ptr_t self, enum devact act)
288 {
289         struct uhid_softc *sc = (struct uhid_softc *)self;
290
291         switch (act) {
292         case DVACT_ACTIVATE:
293                 return (EOPNOTSUPP);
294
295         case DVACT_DEACTIVATE:
296                 sc->sc_dying = 1;
297                 break;
298         }
299         return (0);
300 }
301 #endif
302
303 USB_DETACH(uhid)
304 {
305         USB_DETACH_START(uhid, sc);
306 #if defined(__NetBSD__) || defined(__OpenBSD__)
307         int maj, mn;
308 #endif
309
310 #if defined(__NetBSD__) || defined(__OpenBSD__)
311         DPRINTF(("uhid_detach: sc=%p flags=%d\n", sc, flags));
312 #else
313         DPRINTF(("uhid_detach: sc=%p\n", sc));
314 #endif
315
316         sc->sc_dying = 1;
317         if (sc->sc_intrpipe != NULL)
318                 usbd_abort_pipe(sc->sc_intrpipe);
319
320         if (sc->sc_state & UHID_OPEN) {
321                 crit_enter();
322                 if (--sc->sc_refcnt >= 0) {
323                         /* Wake everyone */
324                         wakeup(&sc->sc_q);
325                         /* Wait for processes to go away. */
326                         usb_detach_wait(USBDEV(sc->sc_dev));
327                 }
328                 crit_exit();
329         }
330
331 #if defined(__NetBSD__) || defined(__OpenBSD__)
332         /* locate the major number */
333         for (maj = 0; maj < nchrdev; maj++)
334                 if (cdevsw[maj].d_open == uhidopen)
335                         break;
336
337         /* Nuke the vnodes for any open instances (calls close). */
338         mn = self->dv_unit;
339         vdevgone(maj, mn, mn, VCHR);
340 #elif defined(__FreeBSD__) || defined(__DragonFly__)
341         cdevsw_remove(&uhid_cdevsw, -1, device_get_unit(self));
342 #endif
343
344         if (sc->sc_repdesc)
345                 free(sc->sc_repdesc, M_USBDEV);
346
347         return (0);
348 }
349
350 void
351 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
352 {
353         struct uhid_softc *sc = addr;
354
355 #ifdef USB_DEBUG
356         if (uhiddebug > 5) {
357                 u_int32_t cc, i;
358
359                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
360                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
361                 DPRINTF(("uhid_intr: data ="));
362                 for (i = 0; i < cc; i++)
363                         DPRINTF((" %02x", sc->sc_ibuf[i]));
364                 DPRINTF(("\n"));
365         }
366 #endif
367
368         if (status == USBD_CANCELLED)
369                 return;
370
371         if (status != USBD_NORMAL_COMPLETION) {
372                 DPRINTF(("uhid_intr: status=%d\n", status));
373                 if (status == USBD_STALLED)
374                     sc->sc_state |= UHID_NEEDCLEAR;
375                 return;
376         }
377
378         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
379
380         if (sc->sc_state & UHID_ASLP) {
381                 sc->sc_state &= ~UHID_ASLP;
382                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
383                 wakeup(&sc->sc_q);
384         }
385         selwakeuppri(&sc->sc_rsel, 0);
386         if (sc->sc_async != NULL) {
387                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
388                 PROC_LOCK(sc->sc_async);
389                 psignal(sc->sc_async, SIGIO);
390                 PROC_UNLOCK(sc->sc_async);
391         }
392 }
393
394 int
395 uhidopen(dev_t dev, int flag, int mode, usb_proc_ptr p)
396 {
397         struct uhid_softc *sc;
398         usbd_status err;
399
400         USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
401
402         DPRINTF(("uhidopen: sc=%p\n", sc));
403
404         if (sc->sc_dying)
405                 return (ENXIO);
406
407         if (sc->sc_state & UHID_OPEN)
408                 return (EBUSY);
409         sc->sc_state |= UHID_OPEN;
410
411         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
412                 sc->sc_state &= ~UHID_OPEN;
413                 return (ENOMEM);
414         }
415
416         sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
417         sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
418
419         /* Set up interrupt pipe. */
420         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
421                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
422                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
423         if (err) {
424                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
425                          "error=%d\n",err));
426                 free(sc->sc_ibuf, M_USBDEV);
427                 free(sc->sc_obuf, M_USBDEV);
428                 sc->sc_ibuf = sc->sc_obuf = NULL;
429
430                 sc->sc_state &= ~UHID_OPEN;
431                 return (EIO);
432         }
433
434         sc->sc_state &= ~UHID_IMMED;
435
436         sc->sc_async = 0;
437
438         return (0);
439 }
440
441 int
442 uhidclose(dev_t dev, int flag, int mode, usb_proc_ptr p)
443 {
444         struct uhid_softc *sc;
445
446         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
447
448         DPRINTF(("uhidclose: sc=%p\n", sc));
449
450         /* Disable interrupts. */
451         usbd_abort_pipe(sc->sc_intrpipe);
452         usbd_close_pipe(sc->sc_intrpipe);
453         sc->sc_intrpipe = 0;
454
455         ndflush(&sc->sc_q, sc->sc_q.c_cc);
456         clfree(&sc->sc_q);
457
458         free(sc->sc_ibuf, M_USBDEV);
459         free(sc->sc_obuf, M_USBDEV);
460         sc->sc_ibuf = sc->sc_obuf = NULL;
461
462         sc->sc_state &= ~UHID_OPEN;
463
464         sc->sc_async = 0;
465
466         return (0);
467 }
468
469 int
470 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
471 {
472         int error = 0;
473         size_t length;
474         u_char buffer[UHID_CHUNK];
475         usbd_status err;
476
477         DPRINTFN(1, ("uhidread\n"));
478         if (sc->sc_state & UHID_IMMED) {
479                 DPRINTFN(1, ("uhidread immed\n"));
480
481                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
482                           sc->sc_iid, buffer, sc->sc_isize);
483                 if (err)
484                         return (EIO);
485                 return (uiomove(buffer, sc->sc_isize, uio));
486         }
487
488         crit_enter();
489         while (sc->sc_q.c_cc == 0) {
490                 if (flag & IO_NDELAY) {
491                         crit_exit();
492                         return (EWOULDBLOCK);
493                 }
494                 sc->sc_state |= UHID_ASLP;
495                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
496                 error = tsleep(&sc->sc_q, PCATCH, "uhidrea", 0);
497                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
498                 if (sc->sc_dying)
499                         error = EIO;
500                 if (error) {
501                         sc->sc_state &= ~UHID_ASLP;
502                         break;
503                 }
504                 if (sc->sc_state & UHID_NEEDCLEAR) {
505                         DPRINTFN(-1,("uhidread: clearing stall\n"));
506                         sc->sc_state &= ~UHID_NEEDCLEAR;
507                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
508                 }
509         }
510         crit_exit();
511
512         /* Transfer as many chunks as possible. */
513         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
514                 length = min(sc->sc_q.c_cc, uio->uio_resid);
515                 if (length > sizeof(buffer))
516                         length = sizeof(buffer);
517
518                 /* Remove a small chunk from the input queue. */
519                 (void) q_to_b(&sc->sc_q, buffer, length);
520                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
521
522                 /* Copy the data to the user process. */
523                 if ((error = uiomove(buffer, length, uio)) != 0)
524                         break;
525         }
526
527         return (error);
528 }
529
530 int
531 uhidread(dev_t dev, struct uio *uio, int flag)
532 {
533         struct uhid_softc *sc;
534         int error;
535
536         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
537
538         sc->sc_refcnt++;
539         error = uhid_do_read(sc, uio, flag);
540         if (--sc->sc_refcnt < 0)
541                 usb_detach_wakeup(USBDEV(sc->sc_dev));
542         return (error);
543 }
544
545 int
546 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
547 {
548         int error;
549         int size;
550         usbd_status err;
551
552         DPRINTFN(1, ("uhidwrite\n"));
553
554         if (sc->sc_dying)
555                 return (EIO);
556
557         size = sc->sc_osize;
558         error = 0;
559         if (uio->uio_resid != size)
560                 return (EINVAL);
561         error = uiomove(sc->sc_obuf, size, uio);
562         if (!error) {
563                 if (sc->sc_oid)
564                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
565                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
566                 else
567                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
568                                   0, sc->sc_obuf, size);
569                 if (err)
570                         error = EIO;
571         }
572
573         return (error);
574 }
575
576 int
577 uhidwrite(dev_t dev, struct uio *uio, int flag)
578 {
579         struct uhid_softc *sc;
580         int error;
581
582         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
583
584         sc->sc_refcnt++;
585         error = uhid_do_write(sc, uio, flag);
586         if (--sc->sc_refcnt < 0)
587                 usb_detach_wakeup(USBDEV(sc->sc_dev));
588         return (error);
589 }
590
591 int
592 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag,
593               usb_proc_ptr p)
594 {
595         struct usb_ctl_report_desc *rd;
596         struct usb_ctl_report *re;
597         int size, id;
598         usbd_status err;
599
600         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
601
602         if (sc->sc_dying)
603                 return (EIO);
604
605         switch (cmd) {
606         case FIONBIO:
607                 /* All handled in the upper FS layer. */
608                 break;
609
610         case FIOASYNC:
611                 if (*(int *)addr) {
612                         if (sc->sc_async != NULL)
613                                 return (EBUSY);
614 #if defined(__DragonFly__)
615                         sc->sc_async = p->td_proc;
616 #elif __FreeBSD_version >= 500000
617                         sc->sc_async = p->td_proc;
618 #else
619                         sc->sc_async = p;
620 #endif
621                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
622                 } else
623                         sc->sc_async = NULL;
624                 break;
625
626         /* XXX this is not the most general solution. */
627         case TIOCSPGRP:
628                 if (sc->sc_async == NULL)
629                         return (EINVAL);
630                 if (*(int *)addr != sc->sc_async->p_pgid)
631                         return (EPERM);
632                 break;
633
634         case USB_GET_REPORT_DESC:
635                 rd = (struct usb_ctl_report_desc *)addr;
636                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
637                 rd->ucrd_size = size;
638                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
639                 break;
640
641         case USB_SET_IMMED:
642                 if (*(int *)addr) {
643                         /* XXX should read into ibuf, but does it matter? */
644                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
645                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
646                         if (err)
647                                 return (EOPNOTSUPP);
648
649                         sc->sc_state |=  UHID_IMMED;
650                 } else
651                         sc->sc_state &= ~UHID_IMMED;
652                 break;
653
654         case USB_GET_REPORT:
655                 re = (struct usb_ctl_report *)addr;
656                 switch (re->ucr_report) {
657                 case UHID_INPUT_REPORT:
658                         size = sc->sc_isize;
659                         id = sc->sc_iid;
660                         break;
661                 case UHID_OUTPUT_REPORT:
662                         size = sc->sc_osize;
663                         id = sc->sc_oid;
664                         break;
665                 case UHID_FEATURE_REPORT:
666                         size = sc->sc_fsize;
667                         id = sc->sc_fid;
668                         break;
669                 default:
670                         return (EINVAL);
671                 }
672                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
673                           size);
674                 if (err)
675                         return (EIO);
676                 break;
677
678         case USB_SET_REPORT:
679                 re = (struct usb_ctl_report *)addr;
680                 switch (re->ucr_report) {
681                 case UHID_INPUT_REPORT:
682                         size = sc->sc_isize;
683                         id = sc->sc_iid;
684                         break;
685                 case UHID_OUTPUT_REPORT:
686                         size = sc->sc_osize;
687                         id = sc->sc_oid;
688                         break;
689                 case UHID_FEATURE_REPORT:
690                         size = sc->sc_fsize;
691                         id = sc->sc_fid;
692                         break;
693                 default:
694                         return (EINVAL);
695                 }
696                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
697                           size);
698                 if (err)
699                         return (EIO);
700                 break;
701
702         case USB_GET_REPORT_ID:
703                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
704                 break;
705
706         default:
707                 return (EINVAL);
708         }
709         return (0);
710 }
711
712 int
713 uhidioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, usb_proc_ptr p)
714 {
715         struct uhid_softc *sc;
716         int error;
717
718         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
719
720         sc->sc_refcnt++;
721         error = uhid_do_ioctl(sc, cmd, addr, flag, p);
722         if (--sc->sc_refcnt < 0)
723                 usb_detach_wakeup(USBDEV(sc->sc_dev));
724         return (error);
725 }
726
727 int
728 uhidpoll(dev_t dev, int events, usb_proc_ptr p)
729 {
730         struct uhid_softc *sc;
731         int revents = 0;
732
733         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
734
735         if (sc->sc_dying)
736                 return (EIO);
737
738         crit_enter();
739         if (events & (POLLOUT | POLLWRNORM))
740                 revents |= events & (POLLOUT | POLLWRNORM);
741         if (events & (POLLIN | POLLRDNORM)) {
742                 if (sc->sc_q.c_cc > 0)
743                         revents |= events & (POLLIN | POLLRDNORM);
744                 else
745                         selrecord(p, &sc->sc_rsel);
746         }
747         crit_exit();
748         return (revents);
749 }
750
751 #if defined(__FreeBSD__) || defined(__DragonFly__)
752 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
753 #endif