Annotation of src/sys/dev/usb/uhid.c, Revision 1.72
1.72 ! christos 1: /* $NetBSD: uhid.c,v 1.71 2006/10/12 01:31:59 christos Exp $ */
1.1 augustss 2:
3: /*
1.63 mycroft 4: * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
1.1 augustss 5: * All rights reserved.
6: *
1.6 augustss 7: * This code is derived from software contributed to The NetBSD Foundation
1.38 augustss 8: * by Lennart Augustsson (lennart@augustsson.net) at
1.6 augustss 9: * Carlstedt Research & Technology.
1.1 augustss 10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
1.15 augustss 40: /*
1.57 augustss 41: * HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1.15 augustss 42: */
1.46 lukem 43:
44: #include <sys/cdefs.h>
1.72 ! christos 45: __KERNEL_RCSID(0, "$NetBSD: uhid.c,v 1.71 2006/10/12 01:31:59 christos Exp $");
1.1 augustss 46:
47: #include <sys/param.h>
48: #include <sys/systm.h>
49: #include <sys/kernel.h>
50: #include <sys/malloc.h>
1.37 augustss 51: #include <sys/signalvar.h>
1.14 augustss 52: #include <sys/device.h>
1.12 augustss 53: #include <sys/ioctl.h>
1.18 augustss 54: #include <sys/conf.h>
1.1 augustss 55: #include <sys/tty.h>
56: #include <sys/file.h>
57: #include <sys/select.h>
58: #include <sys/proc.h>
59: #include <sys/vnode.h>
60: #include <sys/poll.h>
61:
62: #include <dev/usb/usb.h>
63: #include <dev/usb/usbhid.h>
64:
1.42 augustss 65: #include <dev/usb/usbdevs.h>
1.1 augustss 66: #include <dev/usb/usbdi.h>
67: #include <dev/usb/usbdi_util.h>
68: #include <dev/usb/hid.h>
69: #include <dev/usb/usb_quirks.h>
70:
1.47 augustss 71: #include <dev/usb/uhidev.h>
1.42 augustss 72:
1.26 augustss 73: #ifdef UHID_DEBUG
1.19 augustss 74: #define DPRINTF(x) if (uhiddebug) logprintf x
75: #define DPRINTFN(n,x) if (uhiddebug>(n)) logprintf x
1.1 augustss 76: int uhiddebug = 0;
77: #else
78: #define DPRINTF(x)
79: #define DPRINTFN(n,x)
80: #endif
81:
82: struct uhid_softc {
1.47 augustss 83: struct uhidev sc_hdev;
1.1 augustss 84:
85: int sc_isize;
86: int sc_osize;
1.2 augustss 87: int sc_fsize;
1.1 augustss 88:
1.33 augustss 89: u_char *sc_obuf;
1.1 augustss 90:
91: struct clist sc_q;
92: struct selinfo sc_rsel;
1.48 augustss 93: usb_proc_ptr sc_async; /* process that wants SIGIO */
1.1 augustss 94: u_char sc_state; /* driver state */
1.47 augustss 95: #define UHID_ASLP 0x01 /* waiting for device data */
96: #define UHID_IMMED 0x02 /* return read data immediately */
1.18 augustss 97:
98: int sc_refcnt;
99: u_char sc_dying;
1.1 augustss 100: };
101:
102: #define UHIDUNIT(dev) (minor(dev))
103: #define UHID_CHUNK 128 /* chunk size for read */
104: #define UHID_BSIZE 1020 /* buffer size */
105:
1.53 gehenna 106: dev_type_open(uhidopen);
107: dev_type_close(uhidclose);
108: dev_type_read(uhidread);
109: dev_type_write(uhidwrite);
110: dev_type_ioctl(uhidioctl);
111: dev_type_poll(uhidpoll);
1.55 jdolecek 112: dev_type_kqfilter(uhidkqfilter);
1.53 gehenna 113:
114: const struct cdevsw uhid_cdevsw = {
115: uhidopen, uhidclose, uhidread, uhidwrite, uhidioctl,
1.70 christos 116: nostop, notty, uhidpoll, nommap, uhidkqfilter, D_OTHER,
1.53 gehenna 117: };
1.19 augustss 118:
1.47 augustss 119: Static void uhid_intr(struct uhidev *, void *, u_int len);
1.18 augustss 120:
1.39 augustss 121: Static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
122: Static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
1.68 christos 123: Static int uhid_do_ioctl(struct uhid_softc*, u_long, caddr_t, int, struct lwp *);
1.1 augustss 124:
1.12 augustss 125: USB_DECLARE_DRIVER(uhid);
1.1 augustss 126:
1.47 augustss 127: int
1.72 ! christos 128: uhid_match(struct device *parent, struct cfdata *match,
! 129: void *aux)
1.1 augustss 130: {
1.66 tron 131: #ifdef UHID_DEBUG
1.47 augustss 132: struct uhidev_attach_arg *uha = aux;
1.66 tron 133: #endif
1.47 augustss 134:
135: DPRINTF(("uhid_match: report=%d\n", uha->reportid));
136:
1.65 augustss 137: if (match->cf_flags & 1)
1.67 augustss 138: return (UMATCH_HIGHEST);
139: else
140: return (UMATCH_IFACECLASS_GENERIC);
1.1 augustss 141: }
142:
1.47 augustss 143: void
1.72 ! christos 144: uhid_attach(struct device *parent, struct device *self, void *aux)
1.1 augustss 145: {
1.47 augustss 146: struct uhid_softc *sc = (struct uhid_softc *)self;
147: struct uhidev_attach_arg *uha = aux;
148: int size, repid;
1.1 augustss 149: void *desc;
1.52 augustss 150:
1.47 augustss 151: sc->sc_hdev.sc_intr = uhid_intr;
152: sc->sc_hdev.sc_parent = uha->parent;
153: sc->sc_hdev.sc_report_id = uha->reportid;
154:
155: uhidev_get_report_desc(uha->parent, &desc, &size);
156: repid = uha->reportid;
157: sc->sc_isize = hid_report_size(desc, size, hid_input, repid);
158: sc->sc_osize = hid_report_size(desc, size, hid_output, repid);
159: sc->sc_fsize = hid_report_size(desc, size, hid_feature, repid);
1.1 augustss 160:
1.47 augustss 161: printf(": input=%d, output=%d, feature=%d\n",
162: sc->sc_isize, sc->sc_osize, sc->sc_fsize);
1.32 augustss 163:
1.12 augustss 164: USB_ATTACH_SUCCESS_RETURN;
1.1 augustss 165: }
166:
1.18 augustss 167: int
1.39 augustss 168: uhid_activate(device_ptr_t self, enum devact act)
1.18 augustss 169: {
1.21 augustss 170: struct uhid_softc *sc = (struct uhid_softc *)self;
171:
172: switch (act) {
173: case DVACT_ACTIVATE:
174: return (EOPNOTSUPP);
175:
176: case DVACT_DEACTIVATE:
177: sc->sc_dying = 1;
178: break;
179: }
1.18 augustss 180: return (0);
1.12 augustss 181: }
182:
1.47 augustss 183: int
1.72 ! christos 184: uhid_detach(struct device *self, int flags)
1.1 augustss 185: {
1.47 augustss 186: struct uhid_softc *sc = (struct uhid_softc *)self;
1.26 augustss 187: int s;
1.18 augustss 188: int maj, mn;
189:
190: DPRINTF(("uhid_detach: sc=%p flags=%d\n", sc, flags));
1.3 augustss 191:
1.18 augustss 192: sc->sc_dying = 1;
193:
1.47 augustss 194: if (sc->sc_hdev.sc_state & UHIDEV_OPEN) {
1.18 augustss 195: s = splusb();
196: if (--sc->sc_refcnt >= 0) {
197: /* Wake everyone */
198: wakeup(&sc->sc_q);
199: /* Wait for processes to go away. */
1.47 augustss 200: usb_detach_wait(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 201: }
202: splx(s);
203: }
204:
205: /* locate the major number */
1.53 gehenna 206: #if defined(__NetBSD__)
207: maj = cdevsw_lookup_major(&uhid_cdevsw);
208: #elif defined(__OpenBSD__)
1.18 augustss 209: for (maj = 0; maj < nchrdev; maj++)
210: if (cdevsw[maj].d_open == uhidopen)
211: break;
1.53 gehenna 212: #endif
1.18 augustss 213:
214: /* Nuke the vnodes for any open instances (calls close). */
1.69 thorpej 215: mn = device_unit(self);
1.18 augustss 216: vdevgone(maj, mn, mn, VCHR);
1.47 augustss 217:
218: #if 0
1.52 augustss 219: usbd_add_drv_event(USB_EVENT_DRIVER_DETACH,
1.47 augustss 220: sc->sc_hdev.sc_parent->sc_udev,
221: USBDEV(sc->sc_hdev.sc_dev));
1.26 augustss 222: #endif
1.18 augustss 223:
224: return (0);
1.1 augustss 225: }
226:
227: void
1.47 augustss 228: uhid_intr(struct uhidev *addr, void *data, u_int len)
1.1 augustss 229: {
1.47 augustss 230: struct uhid_softc *sc = (struct uhid_softc *)addr;
1.1 augustss 231:
1.33 augustss 232: #ifdef UHID_DEBUG
233: if (uhiddebug > 5) {
1.47 augustss 234: u_int32_t i;
1.52 augustss 235:
1.33 augustss 236: DPRINTF(("uhid_intr: data ="));
1.47 augustss 237: for (i = 0; i < len; i++)
1.51 augustss 238: DPRINTF((" %02x", ((u_char *)data)[i]));
1.33 augustss 239: DPRINTF(("\n"));
240: }
241: #endif
1.1 augustss 242:
1.47 augustss 243: (void)b_to_q(data, len, &sc->sc_q);
1.52 augustss 244:
1.1 augustss 245: if (sc->sc_state & UHID_ASLP) {
246: sc->sc_state &= ~UHID_ASLP;
1.44 yamt 247: DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
1.18 augustss 248: wakeup(&sc->sc_q);
1.1 augustss 249: }
1.55 jdolecek 250: selnotify(&sc->sc_rsel, 0);
1.37 augustss 251: if (sc->sc_async != NULL) {
252: DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
253: psignal(sc->sc_async, SIGIO);
254: }
1.1 augustss 255: }
256:
257: int
1.72 ! christos 258: uhidopen(dev_t dev, int flag, int mode,
! 259: struct lwp *l)
1.1 augustss 260: {
1.25 augustss 261: struct uhid_softc *sc;
1.47 augustss 262: int error;
1.25 augustss 263:
1.12 augustss 264: USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
1.1 augustss 265:
1.18 augustss 266: DPRINTF(("uhidopen: sc=%p\n", sc));
1.1 augustss 267:
1.18 augustss 268: if (sc->sc_dying)
269: return (ENXIO);
1.1 augustss 270:
1.47 augustss 271: error = uhidev_open(&sc->sc_hdev);
272: if (error)
273: return (error);
1.1 augustss 274:
1.17 augustss 275: if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
1.47 augustss 276: uhidev_close(&sc->sc_hdev);
1.12 augustss 277: return (ENOMEM);
1.17 augustss 278: }
1.18 augustss 279: sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
1.17 augustss 280: sc->sc_state &= ~UHID_IMMED;
1.47 augustss 281: sc->sc_async = NULL;
1.37 augustss 282:
1.12 augustss 283: return (0);
1.1 augustss 284: }
285:
286: int
1.72 ! christos 287: uhidclose(dev_t dev, int flag, int mode,
! 288: struct lwp *l)
1.1 augustss 289: {
1.25 augustss 290: struct uhid_softc *sc;
291:
1.12 augustss 292: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
1.1 augustss 293:
294: DPRINTF(("uhidclose: sc=%p\n", sc));
295:
296: clfree(&sc->sc_q);
1.18 augustss 297: free(sc->sc_obuf, M_USBDEV);
1.47 augustss 298: sc->sc_async = NULL;
299: uhidev_close(&sc->sc_hdev);
1.37 augustss 300:
1.12 augustss 301: return (0);
1.1 augustss 302: }
303:
304: int
1.39 augustss 305: uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
1.1 augustss 306: {
307: int s;
308: int error = 0;
1.47 augustss 309: int extra;
1.1 augustss 310: size_t length;
311: u_char buffer[UHID_CHUNK];
1.27 augustss 312: usbd_status err;
1.1 augustss 313:
314: DPRINTFN(1, ("uhidread\n"));
1.2 augustss 315: if (sc->sc_state & UHID_IMMED) {
316: DPRINTFN(1, ("uhidread immed\n"));
1.47 augustss 317: extra = sc->sc_hdev.sc_report_id != 0;
318: err = uhidev_get_report(&sc->sc_hdev, UHID_INPUT_REPORT,
319: buffer, sc->sc_isize + extra);
1.27 augustss 320: if (err)
1.2 augustss 321: return (EIO);
1.47 augustss 322: return (uiomove(buffer+extra, sc->sc_isize, uio));
1.2 augustss 323: }
324:
1.10 augustss 325: s = splusb();
1.1 augustss 326: while (sc->sc_q.c_cc == 0) {
327: if (flag & IO_NDELAY) {
328: splx(s);
1.18 augustss 329: return (EWOULDBLOCK);
1.1 augustss 330: }
331: sc->sc_state |= UHID_ASLP;
1.44 yamt 332: DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
1.18 augustss 333: error = tsleep(&sc->sc_q, PZERO | PCATCH, "uhidrea", 0);
1.1 augustss 334: DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
1.18 augustss 335: if (sc->sc_dying)
336: error = EIO;
1.1 augustss 337: if (error) {
338: sc->sc_state &= ~UHID_ASLP;
1.18 augustss 339: break;
1.1 augustss 340: }
341: }
342: splx(s);
343:
344: /* Transfer as many chunks as possible. */
1.18 augustss 345: while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
1.1 augustss 346: length = min(sc->sc_q.c_cc, uio->uio_resid);
347: if (length > sizeof(buffer))
348: length = sizeof(buffer);
349:
350: /* Remove a small chunk from the input queue. */
351: (void) q_to_b(&sc->sc_q, buffer, length);
1.29 augustss 352: DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
1.1 augustss 353:
354: /* Copy the data to the user process. */
355: if ((error = uiomove(buffer, length, uio)) != 0)
356: break;
357: }
358:
359: return (error);
360: }
361:
362: int
1.39 augustss 363: uhidread(dev_t dev, struct uio *uio, int flag)
1.1 augustss 364: {
1.25 augustss 365: struct uhid_softc *sc;
366: int error;
367:
1.18 augustss 368: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
369:
370: sc->sc_refcnt++;
371: error = uhid_do_read(sc, uio, flag);
372: if (--sc->sc_refcnt < 0)
1.47 augustss 373: usb_detach_wakeup(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 374: return (error);
375: }
376:
377: int
1.72 ! christos 378: uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
1.18 augustss 379: {
1.1 augustss 380: int error;
381: int size;
1.27 augustss 382: usbd_status err;
1.1 augustss 383:
1.18 augustss 384: DPRINTFN(1, ("uhidwrite\n"));
1.52 augustss 385:
1.18 augustss 386: if (sc->sc_dying)
1.1 augustss 387: return (EIO);
388:
389: size = sc->sc_osize;
390: error = 0;
1.18 augustss 391: if (uio->uio_resid != size)
392: return (EINVAL);
393: error = uiomove(sc->sc_obuf, size, uio);
394: if (!error) {
1.47 augustss 395: err = uhidev_set_report(&sc->sc_hdev, UHID_OUTPUT_REPORT,
396: sc->sc_obuf, size);
1.27 augustss 397: if (err)
1.1 augustss 398: error = EIO;
399: }
1.18 augustss 400:
1.1 augustss 401: return (error);
402: }
403:
404: int
1.39 augustss 405: uhidwrite(dev_t dev, struct uio *uio, int flag)
1.18 augustss 406: {
1.25 augustss 407: struct uhid_softc *sc;
408: int error;
409:
1.18 augustss 410: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
411:
412: sc->sc_refcnt++;
413: error = uhid_do_write(sc, uio, flag);
414: if (--sc->sc_refcnt < 0)
1.47 augustss 415: usb_detach_wakeup(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 416: return (error);
417: }
418:
419: int
1.39 augustss 420: uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr,
1.72 ! christos 421: int flag, struct lwp *l)
1.1 augustss 422: {
423: struct usb_ctl_report_desc *rd;
1.2 augustss 424: struct usb_ctl_report *re;
1.47 augustss 425: u_char buffer[UHID_CHUNK];
426: int size, extra;
1.27 augustss 427: usbd_status err;
1.47 augustss 428: void *desc;
1.1 augustss 429:
1.18 augustss 430: DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
431:
432: if (sc->sc_dying)
1.1 augustss 433: return (EIO);
434:
435: switch (cmd) {
1.2 augustss 436: case FIONBIO:
437: /* All handled in the upper FS layer. */
1.37 augustss 438: break;
439:
440: case FIOASYNC:
441: if (*(int *)addr) {
442: if (sc->sc_async != NULL)
443: return (EBUSY);
1.68 christos 444: sc->sc_async = l->l_proc;
445: DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", l->l_proc));
1.37 augustss 446: } else
447: sc->sc_async = NULL;
448: break;
449:
450: /* XXX this is not the most general solution. */
451: case TIOCSPGRP:
452: if (sc->sc_async == NULL)
453: return (EINVAL);
454: if (*(int *)addr != sc->sc_async->p_pgid)
1.60 jdolecek 455: return (EPERM);
456: break;
457:
458: case FIOSETOWN:
459: if (sc->sc_async == NULL)
460: return (EINVAL);
461: if (-*(int *)addr != sc->sc_async->p_pgid
1.70 christos 462: && *(int *)addr != sc->sc_async->p_pid)
1.37 augustss 463: return (EPERM);
1.2 augustss 464: break;
465:
1.1 augustss 466: case USB_GET_REPORT_DESC:
1.47 augustss 467: uhidev_get_report_desc(sc->sc_hdev.sc_parent, &desc, &size);
1.1 augustss 468: rd = (struct usb_ctl_report_desc *)addr;
1.50 christos 469: size = min(size, sizeof rd->ucrd_data);
470: rd->ucrd_size = size;
471: memcpy(rd->ucrd_data, desc, size);
1.1 augustss 472: break;
1.2 augustss 473:
474: case USB_SET_IMMED:
1.9 augustss 475: if (*(int *)addr) {
1.47 augustss 476: extra = sc->sc_hdev.sc_report_id != 0;
477: err = uhidev_get_report(&sc->sc_hdev, UHID_INPUT_REPORT,
478: buffer, sc->sc_isize + extra);
1.27 augustss 479: if (err)
1.9 augustss 480: return (EOPNOTSUPP);
1.12 augustss 481:
1.2 augustss 482: sc->sc_state |= UHID_IMMED;
1.9 augustss 483: } else
1.2 augustss 484: sc->sc_state &= ~UHID_IMMED;
485: break;
486:
487: case USB_GET_REPORT:
488: re = (struct usb_ctl_report *)addr;
1.50 christos 489: switch (re->ucr_report) {
1.2 augustss 490: case UHID_INPUT_REPORT:
491: size = sc->sc_isize;
492: break;
493: case UHID_OUTPUT_REPORT:
494: size = sc->sc_osize;
495: break;
496: case UHID_FEATURE_REPORT:
497: size = sc->sc_fsize;
498: break;
499: default:
500: return (EINVAL);
501: }
1.47 augustss 502: extra = sc->sc_hdev.sc_report_id != 0;
1.50 christos 503: err = uhidev_get_report(&sc->sc_hdev, re->ucr_report,
504: re->ucr_data, size + extra);
1.47 augustss 505: if (extra)
1.50 christos 506: memcpy(re->ucr_data, re->ucr_data+1, size);
1.35 augustss 507: if (err)
508: return (EIO);
509: break;
510:
511: case USB_SET_REPORT:
512: re = (struct usb_ctl_report *)addr;
1.50 christos 513: switch (re->ucr_report) {
1.35 augustss 514: case UHID_INPUT_REPORT:
515: size = sc->sc_isize;
516: break;
517: case UHID_OUTPUT_REPORT:
518: size = sc->sc_osize;
519: break;
520: case UHID_FEATURE_REPORT:
521: size = sc->sc_fsize;
522: break;
523: default:
524: return (EINVAL);
525: }
1.50 christos 526: err = uhidev_set_report(&sc->sc_hdev, re->ucr_report,
527: re->ucr_data, size);
1.27 augustss 528: if (err)
1.2 augustss 529: return (EIO);
530: break;
531:
1.47 augustss 532: case USB_GET_REPORT_ID:
533: *(int *)addr = sc->sc_hdev.sc_report_id;
534: break;
535:
1.61 jdolecek 536: case USB_GET_DEVICEINFO:
537: usbd_fill_deviceinfo(sc->sc_hdev.sc_parent->sc_udev,
538: (struct usb_device_info *)addr, 1);
539: break;
540:
541: case USB_GET_STRING_DESC:
542: {
543: struct usb_string_desc *si = (struct usb_string_desc *)addr;
544: err = usbd_get_string_desc(sc->sc_hdev.sc_parent->sc_udev,
545: si->usd_string_index,
1.62 mycroft 546: si->usd_language_id, &si->usd_desc, &size);
1.61 jdolecek 547: if (err)
548: return (EINVAL);
549: break;
550: }
551:
1.1 augustss 552: default:
553: return (EINVAL);
554: }
555: return (0);
556: }
557:
558: int
1.68 christos 559: uhidioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l)
1.18 augustss 560: {
1.25 augustss 561: struct uhid_softc *sc;
562: int error;
563:
1.18 augustss 564: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
565:
566: sc->sc_refcnt++;
1.68 christos 567: error = uhid_do_ioctl(sc, cmd, addr, flag, l);
1.18 augustss 568: if (--sc->sc_refcnt < 0)
1.47 augustss 569: usb_detach_wakeup(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 570: return (error);
571: }
572:
573: int
1.68 christos 574: uhidpoll(dev_t dev, int events, struct lwp *l)
1.1 augustss 575: {
1.25 augustss 576: struct uhid_softc *sc;
1.1 augustss 577: int revents = 0;
578: int s;
1.25 augustss 579:
1.12 augustss 580: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
1.1 augustss 581:
1.18 augustss 582: if (sc->sc_dying)
1.64 ws 583: return (POLLHUP);
1.1 augustss 584:
1.10 augustss 585: s = splusb();
1.1 augustss 586: if (events & (POLLOUT | POLLWRNORM))
587: revents |= events & (POLLOUT | POLLWRNORM);
1.4 veego 588: if (events & (POLLIN | POLLRDNORM)) {
1.1 augustss 589: if (sc->sc_q.c_cc > 0)
590: revents |= events & (POLLIN | POLLRDNORM);
591: else
1.68 christos 592: selrecord(l, &sc->sc_rsel);
1.4 veego 593: }
1.1 augustss 594:
595: splx(s);
596: return (revents);
1.55 jdolecek 597: }
598:
599: static void
600: filt_uhidrdetach(struct knote *kn)
601: {
602: struct uhid_softc *sc = kn->kn_hook;
603: int s;
604:
605: s = splusb();
1.56 christos 606: SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext);
1.55 jdolecek 607: splx(s);
608: }
609:
610: static int
1.72 ! christos 611: filt_uhidread(struct knote *kn, long hint)
1.55 jdolecek 612: {
613: struct uhid_softc *sc = kn->kn_hook;
614:
615: kn->kn_data = sc->sc_q.c_cc;
616: return (kn->kn_data > 0);
617: }
618:
619: static const struct filterops uhidread_filtops =
620: { 1, NULL, filt_uhidrdetach, filt_uhidread };
621:
622: static const struct filterops uhid_seltrue_filtops =
623: { 1, NULL, filt_uhidrdetach, filt_seltrue };
624:
625: int
626: uhidkqfilter(dev_t dev, struct knote *kn)
627: {
628: struct uhid_softc *sc;
629: struct klist *klist;
630: int s;
631:
632: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
633:
634: if (sc->sc_dying)
635: return (EIO);
636:
637: switch (kn->kn_filter) {
638: case EVFILT_READ:
1.56 christos 639: klist = &sc->sc_rsel.sel_klist;
1.55 jdolecek 640: kn->kn_fop = &uhidread_filtops;
641: break;
642:
643: case EVFILT_WRITE:
1.56 christos 644: klist = &sc->sc_rsel.sel_klist;
1.55 jdolecek 645: kn->kn_fop = &uhid_seltrue_filtops;
646: break;
647:
648: default:
649: return (1);
650: }
651:
652: kn->kn_hook = sc;
653:
654: s = splusb();
655: SLIST_INSERT_HEAD(klist, kn, kn_selnext);
656: splx(s);
657:
658: return (0);
1.1 augustss 659: }
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