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1 /*      $NetBSD: uhid.c,v 1.46 2001/11/13 06:24:55 lukem Exp $  */
2
3 /* Also already merged from NetBSD:
4  *      $NetBSD: uhid.c,v 1.54 2002/09/23 05:51:21 simonb Exp $
5  */
6
7 #include <sys/cdefs.h>
8 __FBSDID("$FreeBSD$");
9
10 /*-
11  * Copyright (c) 1998 The NetBSD Foundation, Inc.
12  * All rights reserved.
13  *
14  * This code is derived from software contributed to The NetBSD Foundation
15  * by Lennart Augustsson (lennart@augustsson.net) at
16  * Carlstedt Research & Technology.
17  *
18  * Redistribution and use in source and binary forms, with or without
19  * modification, are permitted provided that the following conditions
20  * are met:
21  * 1. Redistributions of source code must retain the above copyright
22  *    notice, this list of conditions and the following disclaimer.
23  * 2. Redistributions in binary form must reproduce the above copyright
24  *    notice, this list of conditions and the following disclaimer in the
25  *    documentation and/or other materials provided with the distribution.
26  * 3. All advertising materials mentioning features or use of this software
27  *    must display the following acknowledgement:
28  *        This product includes software developed by the NetBSD
29  *        Foundation, Inc. and its contributors.
30  * 4. Neither the name of The NetBSD Foundation nor the names of its
31  *    contributors may be used to endorse or promote products derived
32  *    from this software without specific prior written permission.
33  *
34  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
35  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
36  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
37  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
38  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
39  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
40  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
41  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
42  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
43  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
44  * POSSIBILITY OF SUCH DAMAGE.
45  */
46
47 /*
48  * HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf
49  */
50
51 #include <sys/param.h>
52 #include <sys/systm.h>
53 #include <sys/kernel.h>
54 #include <sys/lock.h>
55 #include <sys/malloc.h>
56 #if __FreeBSD_version >= 500000
57 #include <sys/mutex.h>
58 #endif
59 #include <sys/signalvar.h>
60 #include <sys/fcntl.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/poll.h>
81 #include <sys/sysctl.h>
82 #include <sys/uio.h>
83
84 #include <dev/usb/usb.h>
85 #include <dev/usb/usbhid.h>
86
87 #include "usbdevs.h"
88 #include <dev/usb/usbdi.h>
89 #include <dev/usb/usbdi_util.h>
90 #include <dev/usb/hid.h>
91
92 /* Replacement report descriptors for devices shipped with broken ones */
93 #include <dev/usb/ugraphire_rdesc.h>
94 #include <dev/usb/uxb360gp_rdesc.h>
95
96 /* For hid blacklist quirk */
97 #include <dev/usb/usb_quirks.h>
98
99 #ifdef USB_DEBUG
100 #define DPRINTF(x)      if (uhiddebug) logprintf x
101 #define DPRINTFN(n,x)   if (uhiddebug>(n)) logprintf x
102 int     uhiddebug = 0;
103 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
104 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
105            &uhiddebug, 0, "uhid debug level");
106 #else
107 #define DPRINTF(x)
108 #define DPRINTFN(n,x)
109 #endif
110
111 struct uhid_softc {
112         device_t sc_dev;                        /* base device */
113         usbd_device_handle sc_udev;
114         usbd_interface_handle sc_iface; /* interface */
115         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
116         int sc_ep_addr;
117
118         int sc_isize;
119         int sc_osize;
120         int sc_fsize;
121         u_int8_t sc_iid;
122         u_int8_t sc_oid;
123         u_int8_t sc_fid;
124
125         u_char *sc_ibuf;
126         u_char *sc_obuf;
127
128         void *sc_repdesc;
129         int sc_repdesc_size;
130
131         struct clist sc_q;
132         struct selinfo sc_rsel;
133         struct proc *sc_async;  /* process that wants SIGIO */
134         u_char sc_state;        /* driver state */
135 #define UHID_OPEN       0x01    /* device is open */
136 #define UHID_ASLP       0x02    /* waiting for device data */
137 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
138 #define UHID_IMMED      0x08    /* return read data immediately */
139
140         int sc_refcnt;
141         u_char sc_dying;
142
143 #if defined(__FreeBSD__)
144         struct cdev *dev;
145 #endif
146 };
147
148 #define UHIDUNIT(dev)   (minor(dev))
149 #define UHID_CHUNK      128     /* chunk size for read */
150 #define UHID_BSIZE      1020    /* buffer size */
151
152 #if defined(__NetBSD__) || defined(__OpenBSD__)
153 cdev_decl(uhid);
154 #elif defined(__FreeBSD__)
155 d_open_t        uhidopen;
156 d_close_t       uhidclose;
157 d_read_t        uhidread;
158 d_write_t       uhidwrite;
159 d_ioctl_t       uhidioctl;
160 d_poll_t        uhidpoll;
161
162
163 static struct cdevsw uhid_cdevsw = {
164         .d_version =    D_VERSION,
165         .d_flags =      D_NEEDGIANT,
166         .d_open =       uhidopen,
167         .d_close =      uhidclose,
168         .d_read =       uhidread,
169         .d_write =      uhidwrite,
170         .d_ioctl =      uhidioctl,
171         .d_poll =       uhidpoll,
172         .d_name =       "uhid",
173 #if __FreeBSD_version < 500014
174         .d_bmaj         -1
175 #endif
176 };
177 #endif
178
179 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
180                            usbd_status);
181
182 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
183 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
184 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int,
185                               usb_proc_ptr);
186
187 USB_DECLARE_DRIVER(uhid);
188
189 USB_MATCH(uhid)
190 {
191         USB_MATCH_START(uhid, uaa);
192         usb_interface_descriptor_t *id;
193
194         if (uaa->iface == NULL)
195                 return (UMATCH_NONE);
196         id = usbd_get_interface_descriptor(uaa->iface);
197         if (id == NULL)
198                 return (UMATCH_NONE);
199         if  (id->bInterfaceClass != UICLASS_HID) {
200                 /* The Xbox 360 gamepad doesn't use the HID class. */
201                 if (id->bInterfaceClass != UICLASS_VENDOR ||
202                     id->bInterfaceSubClass != UISUBCLASS_XBOX360_CONTROLLER ||
203                     id->bInterfaceProtocol != UIPROTO_XBOX360_GAMEPAD)
204                         return (UMATCH_NONE);
205         }
206         if (usbd_get_quirks(uaa->device)->uq_flags & UQ_HID_IGNORE)
207                 return (UMATCH_NONE);
208 #if 0
209         if (uaa->matchlvl)
210                 return (uaa->matchlvl);
211 #endif
212
213         return (UMATCH_IFACECLASS_GENERIC);
214 }
215
216 USB_ATTACH(uhid)
217 {
218         USB_ATTACH_START(uhid, sc, uaa);
219         usbd_interface_handle iface = uaa->iface;
220         usb_interface_descriptor_t *id;
221         usb_endpoint_descriptor_t *ed;
222         int size;
223         void *desc;
224         const void *descptr;
225         usbd_status err;
226         char devinfo[1024];
227
228         sc->sc_udev = uaa->device;
229         sc->sc_iface = iface;
230         id = usbd_get_interface_descriptor(iface);
231         usbd_devinfo(uaa->device, USBD_SHOW_INTERFACE_CLASS, devinfo);
232         USB_ATTACH_SETUP;
233
234         ed = usbd_interface2endpoint_descriptor(iface, 0);
235         if (ed == NULL) {
236                 printf("%s: could not read endpoint descriptor\n",
237                        device_get_nameunit(sc->sc_dev));
238                 sc->sc_dying = 1;
239                 USB_ATTACH_ERROR_RETURN;
240         }
241
242         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
243                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
244                      " bInterval=%d\n",
245                      ed->bLength, ed->bDescriptorType,
246                      ed->bEndpointAddress & UE_ADDR,
247                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
248                      ed->bmAttributes & UE_XFERTYPE,
249                      UGETW(ed->wMaxPacketSize), ed->bInterval));
250
251         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
252             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
253                 printf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
254                 sc->sc_dying = 1;
255                 USB_ATTACH_ERROR_RETURN;
256         }
257
258         sc->sc_ep_addr = ed->bEndpointAddress;
259
260         descptr = NULL;
261         if (uaa->vendor == USB_VENDOR_WACOM) {
262                 /* The report descriptor for the Wacom Graphire is broken. */
263                 if (uaa->product == USB_PRODUCT_WACOM_GRAPHIRE) {
264                         size = sizeof uhid_graphire_report_descr;
265                         descptr = uhid_graphire_report_descr;
266                 } else if (uaa->product == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) {
267                         static uByte reportbuf[] = {2, 2, 2};
268
269                         /*
270                          * The Graphire3 needs 0x0202 to be written to
271                          * feature report ID 2 before it'll start
272                          * returning digitizer data.
273                          */
274                         usbd_set_report(uaa->iface, UHID_FEATURE_REPORT, 2,
275                             &reportbuf, sizeof reportbuf);
276
277                         size = sizeof uhid_graphire3_4x5_report_descr;
278                         descptr = uhid_graphire3_4x5_report_descr;
279                 }
280         } else if (id->bInterfaceClass == UICLASS_VENDOR &&
281             id->bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER &&
282             id->bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD) {
283                 static uByte reportbuf[] = {1, 3, 0};
284
285                 /* The LEDs on the gamepad are blinking by default, turn off. */
286                 usbd_set_report(uaa->iface, UHID_OUTPUT_REPORT, 0,
287                     &reportbuf, sizeof reportbuf);
288
289                 /* The Xbox 360 gamepad has no report descriptor. */
290                 size = sizeof uhid_xb360gp_report_descr;
291                 descptr = uhid_xb360gp_report_descr;
292         }
293
294         if (descptr) {
295                 desc = malloc(size, M_USBDEV, M_NOWAIT);
296                 if (desc == NULL)
297                         err = USBD_NOMEM;
298                 else {
299                         err = USBD_NORMAL_COMPLETION;
300                         memcpy(desc, descptr, size);
301                 }
302         } else {
303                 desc = NULL;
304                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
305         }
306
307         if (err) {
308                 printf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
309                 sc->sc_dying = 1;
310                 USB_ATTACH_ERROR_RETURN;
311         }
312
313         (void)usbd_set_idle(iface, 0, 0);
314
315         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
316         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
317         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
318
319         sc->sc_repdesc = desc;
320         sc->sc_repdesc_size = size;
321
322 #if defined(__FreeBSD__)
323         sc->dev = make_dev(&uhid_cdevsw, device_get_unit(self),
324                         UID_ROOT, GID_OPERATOR,
325                         0644, "uhid%d", device_get_unit(self));
326 #endif
327
328         USB_ATTACH_SUCCESS_RETURN;
329 }
330
331 #if defined(__NetBSD__) || defined(__OpenBSD__)
332 int
333 uhid_activate(device_t self, enum devact act)
334 {
335         struct uhid_softc *sc = (struct uhid_softc *)self;
336
337         switch (act) {
338         case DVACT_ACTIVATE:
339                 return (EOPNOTSUPP);
340
341         case DVACT_DEACTIVATE:
342                 sc->sc_dying = 1;
343                 break;
344         }
345         return (0);
346 }
347 #endif
348
349 USB_DETACH(uhid)
350 {
351         USB_DETACH_START(uhid, sc);
352         int s;
353 #if defined(__NetBSD__) || defined(__OpenBSD__)
354         int maj, mn;
355 #endif
356
357 #if defined(__NetBSD__) || defined(__OpenBSD__)
358         DPRINTF(("uhid_detach: sc=%p flags=%d\n", sc, flags));
359 #else
360         DPRINTF(("uhid_detach: sc=%p\n", sc));
361 #endif
362
363         sc->sc_dying = 1;
364         if (sc->sc_intrpipe != NULL)
365                 usbd_abort_pipe(sc->sc_intrpipe);
366
367         if (sc->sc_state & UHID_OPEN) {
368                 s = splusb();
369                 if (--sc->sc_refcnt >= 0) {
370                         /* Wake everyone */
371                         wakeup(&sc->sc_q);
372                         /* Wait for processes to go away. */
373                         usb_detach_wait(USBDEV(sc->sc_dev));
374                 }
375                 splx(s);
376         }
377
378 #if defined(__NetBSD__) || defined(__OpenBSD__)
379         /* locate the major number */
380         for (maj = 0; maj < nchrdev; maj++)
381                 if (cdevsw[maj].d_open == uhidopen)
382                         break;
383
384         /* Nuke the vnodes for any open instances (calls close). */
385         mn = self->dv_unit;
386         vdevgone(maj, mn, mn, VCHR);
387 #elif defined(__FreeBSD__)
388         destroy_dev(sc->dev);
389 #endif
390
391         if (sc->sc_repdesc)
392                 free(sc->sc_repdesc, M_USBDEV);
393
394         return (0);
395 }
396
397 void
398 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
399 {
400         struct uhid_softc *sc = addr;
401
402 #ifdef USB_DEBUG
403         if (uhiddebug > 5) {
404                 u_int32_t cc, i;
405
406                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
407                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
408                 DPRINTF(("uhid_intr: data ="));
409                 for (i = 0; i < cc; i++)
410                         DPRINTF((" %02x", sc->sc_ibuf[i]));
411                 DPRINTF(("\n"));
412         }
413 #endif
414
415         if (status == USBD_CANCELLED)
416                 return;
417
418         if (status != USBD_NORMAL_COMPLETION) {
419                 DPRINTF(("uhid_intr: status=%d\n", status));
420                 if (status == USBD_STALLED)
421                     sc->sc_state |= UHID_NEEDCLEAR;
422                 return;
423         }
424
425         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
426
427         if (sc->sc_state & UHID_ASLP) {
428                 sc->sc_state &= ~UHID_ASLP;
429                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
430                 wakeup(&sc->sc_q);
431         }
432         selwakeuppri(&sc->sc_rsel, PZERO);
433         if (sc->sc_async != NULL) {
434                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
435                 PROC_LOCK(sc->sc_async);
436                 psignal(sc->sc_async, SIGIO);
437                 PROC_UNLOCK(sc->sc_async);
438         }
439 }
440
441 int
442 uhidopen(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
443 {
444         struct uhid_softc *sc;
445         usbd_status err;
446
447         USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
448
449         DPRINTF(("uhidopen: sc=%p\n", sc));
450
451         if (sc->sc_dying)
452                 return (ENXIO);
453
454         if (sc->sc_state & UHID_OPEN)
455                 return (EBUSY);
456         sc->sc_state |= UHID_OPEN;
457
458         if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
459                 sc->sc_state &= ~UHID_OPEN;
460                 return (ENOMEM);
461         }
462
463         sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
464         sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
465
466         /* Set up interrupt pipe. */
467         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
468                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
469                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
470         if (err) {
471                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
472                          "error=%d\n",err));
473                 free(sc->sc_ibuf, M_USBDEV);
474                 free(sc->sc_obuf, M_USBDEV);
475                 sc->sc_ibuf = sc->sc_obuf = NULL;
476
477                 sc->sc_state &= ~UHID_OPEN;
478                 return (EIO);
479         }
480
481         sc->sc_state &= ~UHID_IMMED;
482
483         sc->sc_async = 0;
484
485         return (0);
486 }
487
488 int
489 uhidclose(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
490 {
491         struct uhid_softc *sc;
492
493         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
494
495         DPRINTF(("uhidclose: sc=%p\n", sc));
496
497         /* Disable interrupts. */
498         usbd_abort_pipe(sc->sc_intrpipe);
499         usbd_close_pipe(sc->sc_intrpipe);
500         sc->sc_intrpipe = 0;
501
502         ndflush(&sc->sc_q, sc->sc_q.c_cc);
503         clfree(&sc->sc_q);
504
505         free(sc->sc_ibuf, M_USBDEV);
506         free(sc->sc_obuf, M_USBDEV);
507         sc->sc_ibuf = sc->sc_obuf = NULL;
508
509         sc->sc_state &= ~UHID_OPEN;
510
511         sc->sc_async = 0;
512
513         return (0);
514 }
515
516 int
517 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
518 {
519         int s;
520         int error = 0;
521         size_t length;
522         u_char buffer[UHID_CHUNK];
523         usbd_status err;
524
525         DPRINTFN(1, ("uhidread\n"));
526         if (sc->sc_state & UHID_IMMED) {
527                 DPRINTFN(1, ("uhidread immed\n"));
528
529                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
530                           sc->sc_iid, buffer, sc->sc_isize);
531                 if (err)
532                         return (EIO);
533                 return (uiomove(buffer, sc->sc_isize, uio));
534         }
535
536         s = splusb();
537         while (sc->sc_q.c_cc == 0) {
538                 if (flag & O_NONBLOCK) {
539                         splx(s);
540                         return (EWOULDBLOCK);
541                 }
542                 sc->sc_state |= UHID_ASLP;
543                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
544                 error = tsleep(&sc->sc_q, PZERO | PCATCH, "uhidrea", 0);
545                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
546                 if (sc->sc_dying)
547                         error = EIO;
548                 if (error) {
549                         sc->sc_state &= ~UHID_ASLP;
550                         break;
551                 }
552                 if (sc->sc_state & UHID_NEEDCLEAR) {
553                         DPRINTFN(-1,("uhidread: clearing stall\n"));
554                         sc->sc_state &= ~UHID_NEEDCLEAR;
555                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
556                 }
557         }
558         splx(s);
559
560         /* Transfer as many chunks as possible. */
561         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
562                 length = min(sc->sc_q.c_cc, uio->uio_resid);
563                 if (length > sizeof(buffer))
564                         length = sizeof(buffer);
565
566                 /* Remove a small chunk from the input queue. */
567                 (void) q_to_b(&sc->sc_q, buffer, length);
568                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
569
570                 /* Copy the data to the user process. */
571                 if ((error = uiomove(buffer, length, uio)) != 0)
572                         break;
573         }
574
575         return (error);
576 }
577
578 int
579 uhidread(struct cdev *dev, struct uio *uio, int flag)
580 {
581         struct uhid_softc *sc;
582         int error;
583
584         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
585
586         sc->sc_refcnt++;
587         error = uhid_do_read(sc, uio, flag);
588         if (--sc->sc_refcnt < 0)
589                 usb_detach_wakeup(USBDEV(sc->sc_dev));
590         return (error);
591 }
592
593 int
594 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
595 {
596         int error;
597         int size;
598         usbd_status err;
599
600         DPRINTFN(1, ("uhidwrite\n"));
601
602         if (sc->sc_dying)
603                 return (EIO);
604
605         size = sc->sc_osize;
606         error = 0;
607         if (uio->uio_resid != size)
608                 return (EINVAL);
609         error = uiomove(sc->sc_obuf, size, uio);
610         if (!error) {
611                 if (sc->sc_oid)
612                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
613                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
614                 else
615                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
616                                   0, sc->sc_obuf, size);
617                 if (err)
618                         error = EIO;
619         }
620
621         return (error);
622 }
623
624 int
625 uhidwrite(struct cdev *dev, struct uio *uio, int flag)
626 {
627         struct uhid_softc *sc;
628         int error;
629
630         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
631
632         sc->sc_refcnt++;
633         error = uhid_do_write(sc, uio, flag);
634         if (--sc->sc_refcnt < 0)
635                 usb_detach_wakeup(USBDEV(sc->sc_dev));
636         return (error);
637 }
638
639 int
640 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag,
641               usb_proc_ptr p)
642 {
643         struct usb_ctl_report_desc *rd;
644         struct usb_ctl_report *re;
645         int size, id;
646         usbd_status err;
647
648         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
649
650         if (sc->sc_dying)
651                 return (EIO);
652
653         switch (cmd) {
654         case FIONBIO:
655                 /* All handled in the upper FS layer. */
656                 break;
657
658         case FIOASYNC:
659                 if (*(int *)addr) {
660                         if (sc->sc_async != NULL)
661                                 return (EBUSY);
662 #if __FreeBSD_version >= 500000
663                         sc->sc_async = p->td_proc;
664 #else
665                         sc->sc_async = p;
666 #endif
667                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
668                 } else
669                         sc->sc_async = NULL;
670                 break;
671
672         /* XXX this is not the most general solution. */
673         case TIOCSPGRP:
674                 if (sc->sc_async == NULL)
675                         return (EINVAL);
676                 if (*(int *)addr != sc->sc_async->p_pgid)
677                         return (EPERM);
678                 break;
679
680         case USB_GET_REPORT_DESC:
681                 rd = (struct usb_ctl_report_desc *)addr;
682                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
683                 rd->ucrd_size = size;
684                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
685                 break;
686
687         case USB_SET_IMMED:
688                 if (*(int *)addr) {
689                         /* XXX should read into ibuf, but does it matter? */
690                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
691                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
692                         if (err)
693                                 return (EOPNOTSUPP);
694
695                         sc->sc_state |=  UHID_IMMED;
696                 } else
697                         sc->sc_state &= ~UHID_IMMED;
698                 break;
699
700         case USB_GET_REPORT:
701                 re = (struct usb_ctl_report *)addr;
702                 switch (re->ucr_report) {
703                 case UHID_INPUT_REPORT:
704                         size = sc->sc_isize;
705                         id = sc->sc_iid;
706                         break;
707                 case UHID_OUTPUT_REPORT:
708                         size = sc->sc_osize;
709                         id = sc->sc_oid;
710                         break;
711                 case UHID_FEATURE_REPORT:
712                         size = sc->sc_fsize;
713                         id = sc->sc_fid;
714                         break;
715                 default:
716                         return (EINVAL);
717                 }
718                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
719                           size);
720                 if (err)
721                         return (EIO);
722                 break;
723
724         case USB_SET_REPORT:
725                 re = (struct usb_ctl_report *)addr;
726                 switch (re->ucr_report) {
727                 case UHID_INPUT_REPORT:
728                         size = sc->sc_isize;
729                         id = sc->sc_iid;
730                         break;
731                 case UHID_OUTPUT_REPORT:
732                         size = sc->sc_osize;
733                         id = sc->sc_oid;
734                         break;
735                 case UHID_FEATURE_REPORT:
736                         size = sc->sc_fsize;
737                         id = sc->sc_fid;
738                         break;
739                 default:
740                         return (EINVAL);
741                 }
742                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
743                           size);
744                 if (err)
745                         return (EIO);
746                 break;
747
748         case USB_GET_REPORT_ID:
749                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
750                 break;
751
752         default:
753                 return (EINVAL);
754         }
755         return (0);
756 }
757
758 int
759 uhidioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, usb_proc_ptr p)
760 {
761         struct uhid_softc *sc;
762         int error;
763
764         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
765
766         sc->sc_refcnt++;
767         error = uhid_do_ioctl(sc, cmd, addr, flag, p);
768         if (--sc->sc_refcnt < 0)
769                 usb_detach_wakeup(USBDEV(sc->sc_dev));
770         return (error);
771 }
772
773 int
774 uhidpoll(struct cdev *dev, int events, usb_proc_ptr p)
775 {
776         struct uhid_softc *sc;
777         int revents = 0;
778         int s;
779
780         USB_GET_SC(uhid, UHIDUNIT(dev), sc);
781
782         if (sc->sc_dying)
783                 return (EIO);
784
785         s = splusb();
786         if (events & (POLLOUT | POLLWRNORM))
787                 revents |= events & (POLLOUT | POLLWRNORM);
788         if (events & (POLLIN | POLLRDNORM)) {
789                 if (sc->sc_q.c_cc > 0)
790                         revents |= events & (POLLIN | POLLRDNORM);
791                 else
792                         selrecord(p, &sc->sc_rsel);
793         }
794
795         splx(s);
796         return (revents);
797 }
798
799 #if defined(__FreeBSD__)
800 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
801 #endif