FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/uhid.c
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: releng/7.3/sys/dev/usb/uhid.c 170969 2007-06-21 14:42:34Z imp $");
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 /*
52 * XXX TODO: Convert this driver to use si_drv[12] rather than the
53 * devclass_get_softc junk
54 */
55
56 #include <sys/param.h>
57 #include <sys/systm.h>
58 #include <sys/kernel.h>
59 #include <sys/lock.h>
60 #include <sys/malloc.h>
61 #include <sys/mutex.h>
62 #include <sys/signalvar.h>
63 #include <sys/fcntl.h>
64 #include <sys/ioccom.h>
65 #include <sys/filio.h>
66 #include <sys/module.h>
67 #include <sys/bus.h>
68 #include <sys/ioccom.h>
69 #include <sys/conf.h>
70 #include <sys/tty.h>
71 #include <sys/selinfo.h>
72 #include <sys/proc.h>
73 #include <sys/poll.h>
74 #include <sys/sysctl.h>
75 #include <sys/uio.h>
76
77 #include <dev/usb/usb.h>
78 #include <dev/usb/usbhid.h>
79
80 #include "usbdevs.h"
81 #include <dev/usb/usbdi.h>
82 #include <dev/usb/usbdi_util.h>
83 #include <dev/usb/hid.h>
84
85 /* Replacement report descriptors for devices shipped with broken ones */
86 #include <dev/usb/ugraphire_rdesc.h>
87 #include <dev/usb/uxb360gp_rdesc.h>
88
89 /* For hid blacklist quirk */
90 #include <dev/usb/usb_quirks.h>
91
92 #ifdef USB_DEBUG
93 #define DPRINTF(x) if (uhiddebug) printf x
94 #define DPRINTFN(n,x) if (uhiddebug>(n)) printf x
95 int uhiddebug = 0;
96 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
97 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
98 &uhiddebug, 0, "uhid debug level");
99 #else
100 #define DPRINTF(x)
101 #define DPRINTFN(n,x)
102 #endif
103
104 struct uhid_softc {
105 device_t sc_dev; /* base device */
106 usbd_device_handle sc_udev;
107 usbd_interface_handle sc_iface; /* interface */
108 usbd_pipe_handle sc_intrpipe; /* interrupt pipe */
109 int sc_ep_addr;
110
111 int sc_isize;
112 int sc_osize;
113 int sc_fsize;
114 u_int8_t sc_iid;
115 u_int8_t sc_oid;
116 u_int8_t sc_fid;
117
118 u_char *sc_ibuf;
119 u_char *sc_obuf;
120
121 void *sc_repdesc;
122 int sc_repdesc_size;
123
124 struct clist sc_q;
125 struct selinfo sc_rsel;
126 struct proc *sc_async; /* process that wants SIGIO */
127 u_char sc_state; /* driver state */
128 #define UHID_OPEN 0x01 /* device is open */
129 #define UHID_ASLP 0x02 /* waiting for device data */
130 #define UHID_NEEDCLEAR 0x04 /* needs clearing endpoint stall */
131 #define UHID_IMMED 0x08 /* return read data immediately */
132
133 int sc_refcnt;
134 u_char sc_dying;
135
136 struct cdev *dev;
137 };
138
139 #define UHIDUNIT(dev) (minor(dev))
140 #define UHID_CHUNK 128 /* chunk size for read */
141 #define UHID_BSIZE 1020 /* buffer size */
142
143 d_open_t uhidopen;
144 d_close_t uhidclose;
145 d_read_t uhidread;
146 d_write_t uhidwrite;
147 d_ioctl_t uhidioctl;
148 d_poll_t uhidpoll;
149
150
151 static struct cdevsw uhid_cdevsw = {
152 .d_version = D_VERSION,
153 .d_flags = D_NEEDGIANT,
154 .d_open = uhidopen,
155 .d_close = uhidclose,
156 .d_read = uhidread,
157 .d_write = uhidwrite,
158 .d_ioctl = uhidioctl,
159 .d_poll = uhidpoll,
160 .d_name = "uhid",
161 };
162
163 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
164 usbd_status);
165
166 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
167 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
168 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int,
169 struct thread *);
170
171 MODULE_DEPEND(uhid, usb, 1, 1, 1);
172
173 static device_probe_t uhid_match;
174 static device_attach_t uhid_attach;
175 static device_detach_t uhid_detach;
176
177 static device_method_t uhid_methods[] = {
178 /* Device interface */
179 DEVMETHOD(device_probe, uhid_match),
180 DEVMETHOD(device_attach, uhid_attach),
181 DEVMETHOD(device_detach, uhid_detach),
182
183 { 0, 0 }
184 };
185
186 static driver_t uhid_driver = {
187 "uhid",
188 uhid_methods,
189 sizeof(struct uhid_softc)
190 };
191
192 static devclass_t uhid_devclass;
193
194 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
195
196 static int
197 uhid_match(device_t self)
198 {
199 struct usb_attach_arg *uaa = device_get_ivars(self);
200 usb_interface_descriptor_t *id;
201
202 if (uaa->iface == NULL)
203 return (UMATCH_NONE);
204 id = usbd_get_interface_descriptor(uaa->iface);
205 if (id == NULL)
206 return (UMATCH_NONE);
207 if (id->bInterfaceClass != UICLASS_HID) {
208 /* The Xbox 360 gamepad doesn't use the HID class. */
209 if (id->bInterfaceClass != UICLASS_VENDOR ||
210 id->bInterfaceSubClass != UISUBCLASS_XBOX360_CONTROLLER ||
211 id->bInterfaceProtocol != UIPROTO_XBOX360_GAMEPAD)
212 return (UMATCH_NONE);
213 }
214 if (usbd_get_quirks(uaa->device)->uq_flags & UQ_HID_IGNORE)
215 return (UMATCH_NONE);
216 #if 0
217 if (uaa->matchlvl)
218 return (uaa->matchlvl);
219 #endif
220
221 return (UMATCH_IFACECLASS_GENERIC);
222 }
223
224 static int
225 uhid_attach(device_t self)
226 {
227 struct uhid_softc *sc = device_get_softc(self);
228 struct usb_attach_arg *uaa = device_get_ivars(self);
229 usbd_interface_handle iface = uaa->iface;
230 usb_interface_descriptor_t *id;
231 usb_endpoint_descriptor_t *ed;
232 int size;
233 void *desc;
234 const void *descptr;
235 usbd_status err;
236
237 sc->sc_dev = self;
238 sc->sc_udev = uaa->device;
239 sc->sc_iface = iface;
240 id = usbd_get_interface_descriptor(iface);
241
242 ed = usbd_interface2endpoint_descriptor(iface, 0);
243 if (ed == NULL) {
244 printf("%s: could not read endpoint descriptor\n",
245 device_get_nameunit(sc->sc_dev));
246 sc->sc_dying = 1;
247 return ENXIO;
248 }
249
250 DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
251 "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
252 " bInterval=%d\n",
253 ed->bLength, ed->bDescriptorType,
254 ed->bEndpointAddress & UE_ADDR,
255 UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
256 ed->bmAttributes & UE_XFERTYPE,
257 UGETW(ed->wMaxPacketSize), ed->bInterval));
258
259 if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
260 (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
261 printf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
262 sc->sc_dying = 1;
263 return ENXIO;
264 }
265
266 sc->sc_ep_addr = ed->bEndpointAddress;
267
268 descptr = NULL;
269 if (uaa->vendor == USB_VENDOR_WACOM) {
270 /* The report descriptor for the Wacom Graphire is broken. */
271 if (uaa->product == USB_PRODUCT_WACOM_GRAPHIRE) {
272 size = sizeof uhid_graphire_report_descr;
273 descptr = uhid_graphire_report_descr;
274 } else if (uaa->product == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) {
275 static uByte reportbuf[] = {2, 2, 2};
276
277 /*
278 * The Graphire3 needs 0x0202 to be written to
279 * feature report ID 2 before it'll start
280 * returning digitizer data.
281 */
282 usbd_set_report(uaa->iface, UHID_FEATURE_REPORT, 2,
283 &reportbuf, sizeof reportbuf);
284
285 size = sizeof uhid_graphire3_4x5_report_descr;
286 descptr = uhid_graphire3_4x5_report_descr;
287 }
288 } else if (id->bInterfaceClass == UICLASS_VENDOR &&
289 id->bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER &&
290 id->bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD) {
291 static uByte reportbuf[] = {1, 3, 0};
292
293 /* The LEDs on the gamepad are blinking by default, turn off. */
294 usbd_set_report(uaa->iface, UHID_OUTPUT_REPORT, 0,
295 &reportbuf, sizeof reportbuf);
296
297 /* The Xbox 360 gamepad has no report descriptor. */
298 size = sizeof uhid_xb360gp_report_descr;
299 descptr = uhid_xb360gp_report_descr;
300 }
301
302 if (descptr) {
303 desc = malloc(size, M_USBDEV, M_NOWAIT);
304 if (desc == NULL)
305 err = USBD_NOMEM;
306 else {
307 err = USBD_NORMAL_COMPLETION;
308 memcpy(desc, descptr, size);
309 }
310 } else {
311 desc = NULL;
312 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
313 }
314
315 if (err) {
316 printf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
317 sc->sc_dying = 1;
318 return ENXIO;
319 }
320
321 (void)usbd_set_idle(iface, 0, 0);
322
323 sc->sc_isize = hid_report_size(desc, size, hid_input, &sc->sc_iid);
324 sc->sc_osize = hid_report_size(desc, size, hid_output, &sc->sc_oid);
325 sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
326
327 sc->sc_repdesc = desc;
328 sc->sc_repdesc_size = size;
329 sc->dev = make_dev(&uhid_cdevsw, device_get_unit(self),
330 UID_ROOT, GID_OPERATOR,
331 0644, "uhid%d", device_get_unit(self));
332 return 0;
333 }
334
335 static int
336 uhid_detach(device_t self)
337 {
338 struct uhid_softc *sc = device_get_softc(self);
339 int s;
340
341 DPRINTF(("uhid_detach: sc=%p\n", sc));
342 sc->sc_dying = 1;
343 if (sc->sc_intrpipe != NULL)
344 usbd_abort_pipe(sc->sc_intrpipe);
345
346 if (sc->sc_state & UHID_OPEN) {
347 s = splusb();
348 if (--sc->sc_refcnt >= 0) {
349 /* Wake everyone */
350 wakeup(&sc->sc_q);
351 /* Wait for processes to go away. */
352 usb_detach_wait(sc->sc_dev);
353 }
354 splx(s);
355 }
356 destroy_dev(sc->dev);
357
358 if (sc->sc_repdesc)
359 free(sc->sc_repdesc, M_USBDEV);
360
361 return (0);
362 }
363
364 void
365 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
366 {
367 struct uhid_softc *sc = addr;
368
369 #ifdef USB_DEBUG
370 if (uhiddebug > 5) {
371 u_int32_t cc, i;
372
373 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
374 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
375 DPRINTF(("uhid_intr: data ="));
376 for (i = 0; i < cc; i++)
377 DPRINTF((" %02x", sc->sc_ibuf[i]));
378 DPRINTF(("\n"));
379 }
380 #endif
381
382 if (status == USBD_CANCELLED)
383 return;
384
385 if (status != USBD_NORMAL_COMPLETION) {
386 DPRINTF(("uhid_intr: status=%d\n", status));
387 if (status == USBD_STALLED)
388 sc->sc_state |= UHID_NEEDCLEAR;
389 return;
390 }
391
392 (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
393
394 if (sc->sc_state & UHID_ASLP) {
395 sc->sc_state &= ~UHID_ASLP;
396 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
397 wakeup(&sc->sc_q);
398 }
399 selwakeuppri(&sc->sc_rsel, PZERO);
400 if (sc->sc_async != NULL) {
401 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
402 PROC_LOCK(sc->sc_async);
403 psignal(sc->sc_async, SIGIO);
404 PROC_UNLOCK(sc->sc_async);
405 }
406 }
407
408 int
409 uhidopen(struct cdev *dev, int flag, int mode, struct thread *p)
410 {
411 struct uhid_softc *sc;
412 usbd_status err;
413
414 sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
415 if (sc == NULL)
416 return (ENXIO);
417
418 DPRINTF(("uhidopen: sc=%p\n", sc));
419
420 if (sc->sc_dying)
421 return (ENXIO);
422
423 if (sc->sc_state & UHID_OPEN)
424 return (EBUSY);
425 sc->sc_state |= UHID_OPEN;
426
427 clist_alloc_cblocks(&sc->sc_q, UHID_BSIZE, UHID_BSIZE);
428 sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
429 sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
430
431 /* Set up interrupt pipe. */
432 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
433 USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
434 sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
435 if (err) {
436 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
437 "error=%d\n",err));
438 free(sc->sc_ibuf, M_USBDEV);
439 free(sc->sc_obuf, M_USBDEV);
440 sc->sc_ibuf = sc->sc_obuf = NULL;
441
442 sc->sc_state &= ~UHID_OPEN;
443 return (EIO);
444 }
445
446 sc->sc_state &= ~UHID_IMMED;
447
448 sc->sc_async = 0;
449
450 return (0);
451 }
452
453 int
454 uhidclose(struct cdev *dev, int flag, int mode, struct thread *p)
455 {
456 struct uhid_softc *sc;
457
458 sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
459
460 DPRINTF(("uhidclose: sc=%p\n", sc));
461
462 /* Disable interrupts. */
463 usbd_abort_pipe(sc->sc_intrpipe);
464 usbd_close_pipe(sc->sc_intrpipe);
465 sc->sc_intrpipe = 0;
466
467 ndflush(&sc->sc_q, sc->sc_q.c_cc);
468 clist_free_cblocks(&sc->sc_q);
469
470 free(sc->sc_ibuf, M_USBDEV);
471 free(sc->sc_obuf, M_USBDEV);
472 sc->sc_ibuf = sc->sc_obuf = NULL;
473
474 sc->sc_state &= ~UHID_OPEN;
475
476 sc->sc_async = 0;
477
478 return (0);
479 }
480
481 int
482 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
483 {
484 int s;
485 int error = 0;
486 size_t length;
487 u_char buffer[UHID_CHUNK];
488 usbd_status err;
489
490 DPRINTFN(1, ("uhidread\n"));
491 if (sc->sc_state & UHID_IMMED) {
492 DPRINTFN(1, ("uhidread immed\n"));
493
494 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
495 sc->sc_iid, buffer, sc->sc_isize);
496 if (err)
497 return (EIO);
498 return (uiomove(buffer, sc->sc_isize, uio));
499 }
500
501 s = splusb();
502 while (sc->sc_q.c_cc == 0) {
503 if (flag & O_NONBLOCK) {
504 splx(s);
505 return (EWOULDBLOCK);
506 }
507 sc->sc_state |= UHID_ASLP;
508 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
509 error = tsleep(&sc->sc_q, PZERO | PCATCH, "uhidrea", 0);
510 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
511 if (sc->sc_dying)
512 error = EIO;
513 if (error) {
514 sc->sc_state &= ~UHID_ASLP;
515 break;
516 }
517 if (sc->sc_state & UHID_NEEDCLEAR) {
518 DPRINTFN(-1,("uhidread: clearing stall\n"));
519 sc->sc_state &= ~UHID_NEEDCLEAR;
520 usbd_clear_endpoint_stall(sc->sc_intrpipe);
521 }
522 }
523 splx(s);
524
525 /* Transfer as many chunks as possible. */
526 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
527 length = min(sc->sc_q.c_cc, uio->uio_resid);
528 if (length > sizeof(buffer))
529 length = sizeof(buffer);
530
531 /* Remove a small chunk from the input queue. */
532 (void) q_to_b(&sc->sc_q, buffer, length);
533 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
534
535 /* Copy the data to the user process. */
536 if ((error = uiomove(buffer, length, uio)) != 0)
537 break;
538 }
539
540 return (error);
541 }
542
543 int
544 uhidread(struct cdev *dev, struct uio *uio, int flag)
545 {
546 struct uhid_softc *sc;
547 int error;
548
549 sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
550 sc->sc_refcnt++;
551 error = uhid_do_read(sc, uio, flag);
552 if (--sc->sc_refcnt < 0)
553 usb_detach_wakeup(sc->sc_dev);
554 return (error);
555 }
556
557 int
558 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
559 {
560 int error;
561 int size;
562 usbd_status err;
563
564 DPRINTFN(1, ("uhidwrite\n"));
565
566 if (sc->sc_dying)
567 return (EIO);
568
569 size = sc->sc_osize;
570 error = 0;
571 if (uio->uio_resid != size)
572 return (EINVAL);
573 error = uiomove(sc->sc_obuf, size, uio);
574 if (!error) {
575 if (sc->sc_oid)
576 err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
577 sc->sc_obuf[0], sc->sc_obuf+1, size-1);
578 else
579 err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
580 0, sc->sc_obuf, size);
581 if (err)
582 error = EIO;
583 }
584
585 return (error);
586 }
587
588 int
589 uhidwrite(struct cdev *dev, struct uio *uio, int flag)
590 {
591 struct uhid_softc *sc;
592 int error;
593
594 sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
595 sc->sc_refcnt++;
596 error = uhid_do_write(sc, uio, flag);
597 if (--sc->sc_refcnt < 0)
598 usb_detach_wakeup(sc->sc_dev);
599 return (error);
600 }
601
602 int
603 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag,
604 struct thread *p)
605 {
606 struct usb_ctl_report_desc *rd;
607 struct usb_ctl_report *re;
608 int size, id;
609 usbd_status err;
610
611 DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
612
613 if (sc->sc_dying)
614 return (EIO);
615
616 switch (cmd) {
617 case FIONBIO:
618 /* All handled in the upper FS layer. */
619 break;
620
621 case FIOASYNC:
622 if (*(int *)addr) {
623 if (sc->sc_async != NULL)
624 return (EBUSY);
625 sc->sc_async = p->td_proc;
626 DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
627 } else
628 sc->sc_async = NULL;
629 break;
630
631 /* XXX this is not the most general solution. */
632 case TIOCSPGRP:
633 if (sc->sc_async == NULL)
634 return (EINVAL);
635 if (*(int *)addr != sc->sc_async->p_pgid)
636 return (EPERM);
637 break;
638
639 case USB_GET_REPORT_DESC:
640 rd = (struct usb_ctl_report_desc *)addr;
641 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
642 rd->ucrd_size = size;
643 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
644 break;
645
646 case USB_SET_IMMED:
647 if (*(int *)addr) {
648 /* XXX should read into ibuf, but does it matter? */
649 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
650 sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
651 if (err)
652 return (EOPNOTSUPP);
653
654 sc->sc_state |= UHID_IMMED;
655 } else
656 sc->sc_state &= ~UHID_IMMED;
657 break;
658
659 case USB_GET_REPORT:
660 re = (struct usb_ctl_report *)addr;
661 switch (re->ucr_report) {
662 case UHID_INPUT_REPORT:
663 size = sc->sc_isize;
664 id = sc->sc_iid;
665 break;
666 case UHID_OUTPUT_REPORT:
667 size = sc->sc_osize;
668 id = sc->sc_oid;
669 break;
670 case UHID_FEATURE_REPORT:
671 size = sc->sc_fsize;
672 id = sc->sc_fid;
673 break;
674 default:
675 return (EINVAL);
676 }
677 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
678 size);
679 if (err)
680 return (EIO);
681 break;
682
683 case USB_SET_REPORT:
684 re = (struct usb_ctl_report *)addr;
685 switch (re->ucr_report) {
686 case UHID_INPUT_REPORT:
687 size = sc->sc_isize;
688 id = sc->sc_iid;
689 break;
690 case UHID_OUTPUT_REPORT:
691 size = sc->sc_osize;
692 id = sc->sc_oid;
693 break;
694 case UHID_FEATURE_REPORT:
695 size = sc->sc_fsize;
696 id = sc->sc_fid;
697 break;
698 default:
699 return (EINVAL);
700 }
701 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
702 size);
703 if (err)
704 return (EIO);
705 break;
706
707 case USB_GET_REPORT_ID:
708 *(int *)addr = 0; /* XXX: we only support reportid 0? */
709 break;
710
711 default:
712 return (EINVAL);
713 }
714 return (0);
715 }
716
717 int
718 uhidioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *p)
719 {
720 struct uhid_softc *sc;
721 int error;
722
723 sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
724 sc->sc_refcnt++;
725 error = uhid_do_ioctl(sc, cmd, addr, flag, p);
726 if (--sc->sc_refcnt < 0)
727 usb_detach_wakeup(sc->sc_dev);
728 return (error);
729 }
730
731 int
732 uhidpoll(struct cdev *dev, int events, struct thread *p)
733 {
734 struct uhid_softc *sc;
735 int revents = 0;
736 int s;
737
738 sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
739 if (sc->sc_dying)
740 return (EIO);
741
742 s = splusb();
743 if (events & (POLLOUT | POLLWRNORM))
744 revents |= events & (POLLOUT | POLLWRNORM);
745 if (events & (POLLIN | POLLRDNORM)) {
746 if (sc->sc_q.c_cc > 0)
747 revents |= events & (POLLIN | POLLRDNORM);
748 else
749 selrecord(p, &sc->sc_rsel);
750 }
751
752 splx(s);
753 return (revents);
754 }
Cache object: be80e28e0a1e80a59781843c7d66e1da
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