Annotation of src/sys/dev/usb/uhid.c, Revision 1.59.2.5
1.59.2.5! skrll 1: /* $NetBSD: uhid.c,v 1.59.2.4 2004/09/21 13:33:46 skrll Exp $ */
1.1 augustss 2:
3: /*
1.59.2.5! skrll 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>
1.59.2.5! skrll 45: __KERNEL_RCSID(0, "$NetBSD: uhid.c,v 1.59.2.4 2004/09/21 13:33:46 skrll 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,
1.55 jdolecek 116: nostop, notty, uhidpoll, nommap, uhidkqfilter,
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);
1.59.2.4 skrll 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
128: uhid_match(struct device *parent, struct cfdata *match, void *aux)
1.1 augustss 129: {
1.47 augustss 130: struct uhidev_attach_arg *uha = aux;
131:
132: DPRINTF(("uhid_match: report=%d\n", uha->reportid));
133:
134: if (uha->matchlvl)
135: return (uha->matchlvl);
1.1 augustss 136: return (UMATCH_IFACECLASS_GENERIC);
137: }
138:
1.47 augustss 139: void
140: uhid_attach(struct device *parent, struct device *self, void *aux)
1.1 augustss 141: {
1.47 augustss 142: struct uhid_softc *sc = (struct uhid_softc *)self;
143: struct uhidev_attach_arg *uha = aux;
144: int size, repid;
1.1 augustss 145: void *desc;
1.52 augustss 146:
1.47 augustss 147: sc->sc_hdev.sc_intr = uhid_intr;
148: sc->sc_hdev.sc_parent = uha->parent;
149: sc->sc_hdev.sc_report_id = uha->reportid;
150:
151: uhidev_get_report_desc(uha->parent, &desc, &size);
152: repid = uha->reportid;
153: sc->sc_isize = hid_report_size(desc, size, hid_input, repid);
154: sc->sc_osize = hid_report_size(desc, size, hid_output, repid);
155: sc->sc_fsize = hid_report_size(desc, size, hid_feature, repid);
1.1 augustss 156:
1.47 augustss 157: printf(": input=%d, output=%d, feature=%d\n",
158: sc->sc_isize, sc->sc_osize, sc->sc_fsize);
1.32 augustss 159:
1.12 augustss 160: USB_ATTACH_SUCCESS_RETURN;
1.1 augustss 161: }
162:
1.18 augustss 163: int
1.39 augustss 164: uhid_activate(device_ptr_t self, enum devact act)
1.18 augustss 165: {
1.21 augustss 166: struct uhid_softc *sc = (struct uhid_softc *)self;
167:
168: switch (act) {
169: case DVACT_ACTIVATE:
170: return (EOPNOTSUPP);
171:
172: case DVACT_DEACTIVATE:
173: sc->sc_dying = 1;
174: break;
175: }
1.18 augustss 176: return (0);
1.12 augustss 177: }
178:
1.47 augustss 179: int
180: uhid_detach(struct device *self, int flags)
1.1 augustss 181: {
1.47 augustss 182: struct uhid_softc *sc = (struct uhid_softc *)self;
1.26 augustss 183: int s;
1.18 augustss 184: int maj, mn;
185:
186: DPRINTF(("uhid_detach: sc=%p flags=%d\n", sc, flags));
1.3 augustss 187:
1.18 augustss 188: sc->sc_dying = 1;
189:
1.47 augustss 190: if (sc->sc_hdev.sc_state & UHIDEV_OPEN) {
1.18 augustss 191: s = splusb();
192: if (--sc->sc_refcnt >= 0) {
193: /* Wake everyone */
194: wakeup(&sc->sc_q);
195: /* Wait for processes to go away. */
1.47 augustss 196: usb_detach_wait(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 197: }
198: splx(s);
199: }
200:
201: /* locate the major number */
1.53 gehenna 202: #if defined(__NetBSD__)
203: maj = cdevsw_lookup_major(&uhid_cdevsw);
204: #elif defined(__OpenBSD__)
1.18 augustss 205: for (maj = 0; maj < nchrdev; maj++)
206: if (cdevsw[maj].d_open == uhidopen)
207: break;
1.53 gehenna 208: #endif
1.18 augustss 209:
210: /* Nuke the vnodes for any open instances (calls close). */
211: mn = self->dv_unit;
212: vdevgone(maj, mn, mn, VCHR);
1.47 augustss 213:
214: #if 0
1.52 augustss 215: usbd_add_drv_event(USB_EVENT_DRIVER_DETACH,
1.47 augustss 216: sc->sc_hdev.sc_parent->sc_udev,
217: USBDEV(sc->sc_hdev.sc_dev));
1.26 augustss 218: #endif
1.18 augustss 219:
220: return (0);
1.1 augustss 221: }
222:
223: void
1.47 augustss 224: uhid_intr(struct uhidev *addr, void *data, u_int len)
1.1 augustss 225: {
1.47 augustss 226: struct uhid_softc *sc = (struct uhid_softc *)addr;
1.1 augustss 227:
1.33 augustss 228: #ifdef UHID_DEBUG
229: if (uhiddebug > 5) {
1.47 augustss 230: u_int32_t i;
1.52 augustss 231:
1.33 augustss 232: DPRINTF(("uhid_intr: data ="));
1.47 augustss 233: for (i = 0; i < len; i++)
1.51 augustss 234: DPRINTF((" %02x", ((u_char *)data)[i]));
1.33 augustss 235: DPRINTF(("\n"));
236: }
237: #endif
1.1 augustss 238:
1.47 augustss 239: (void)b_to_q(data, len, &sc->sc_q);
1.52 augustss 240:
1.1 augustss 241: if (sc->sc_state & UHID_ASLP) {
242: sc->sc_state &= ~UHID_ASLP;
1.44 yamt 243: DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
1.18 augustss 244: wakeup(&sc->sc_q);
1.1 augustss 245: }
1.55 jdolecek 246: selnotify(&sc->sc_rsel, 0);
1.37 augustss 247: if (sc->sc_async != NULL) {
248: DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
249: psignal(sc->sc_async, SIGIO);
250: }
1.1 augustss 251: }
252:
253: int
1.59.2.4 skrll 254: uhidopen(dev_t dev, int flag, int mode, struct lwp *l)
1.1 augustss 255: {
1.25 augustss 256: struct uhid_softc *sc;
1.47 augustss 257: int error;
1.25 augustss 258:
1.12 augustss 259: USB_GET_SC_OPEN(uhid, UHIDUNIT(dev), sc);
1.1 augustss 260:
1.18 augustss 261: DPRINTF(("uhidopen: sc=%p\n", sc));
1.1 augustss 262:
1.18 augustss 263: if (sc->sc_dying)
264: return (ENXIO);
1.1 augustss 265:
1.47 augustss 266: error = uhidev_open(&sc->sc_hdev);
267: if (error)
268: return (error);
1.1 augustss 269:
1.17 augustss 270: if (clalloc(&sc->sc_q, UHID_BSIZE, 0) == -1) {
1.47 augustss 271: uhidev_close(&sc->sc_hdev);
1.12 augustss 272: return (ENOMEM);
1.17 augustss 273: }
1.18 augustss 274: sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
1.17 augustss 275: sc->sc_state &= ~UHID_IMMED;
1.47 augustss 276: sc->sc_async = NULL;
1.37 augustss 277:
1.12 augustss 278: return (0);
1.1 augustss 279: }
280:
281: int
1.59.2.4 skrll 282: uhidclose(dev_t dev, int flag, int mode, struct lwp *l)
1.1 augustss 283: {
1.25 augustss 284: struct uhid_softc *sc;
285:
1.12 augustss 286: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
1.1 augustss 287:
288: DPRINTF(("uhidclose: sc=%p\n", sc));
289:
290: clfree(&sc->sc_q);
1.18 augustss 291: free(sc->sc_obuf, M_USBDEV);
1.47 augustss 292: sc->sc_async = NULL;
293: uhidev_close(&sc->sc_hdev);
1.37 augustss 294:
1.12 augustss 295: return (0);
1.1 augustss 296: }
297:
298: int
1.39 augustss 299: uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
1.1 augustss 300: {
301: int s;
302: int error = 0;
1.47 augustss 303: int extra;
1.1 augustss 304: size_t length;
305: u_char buffer[UHID_CHUNK];
1.27 augustss 306: usbd_status err;
1.1 augustss 307:
308: DPRINTFN(1, ("uhidread\n"));
1.2 augustss 309: if (sc->sc_state & UHID_IMMED) {
310: DPRINTFN(1, ("uhidread immed\n"));
1.47 augustss 311: extra = sc->sc_hdev.sc_report_id != 0;
312: err = uhidev_get_report(&sc->sc_hdev, UHID_INPUT_REPORT,
313: buffer, sc->sc_isize + extra);
1.27 augustss 314: if (err)
1.2 augustss 315: return (EIO);
1.47 augustss 316: return (uiomove(buffer+extra, sc->sc_isize, uio));
1.2 augustss 317: }
318:
1.10 augustss 319: s = splusb();
1.1 augustss 320: while (sc->sc_q.c_cc == 0) {
321: if (flag & IO_NDELAY) {
322: splx(s);
1.18 augustss 323: return (EWOULDBLOCK);
1.1 augustss 324: }
325: sc->sc_state |= UHID_ASLP;
1.44 yamt 326: DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
1.18 augustss 327: error = tsleep(&sc->sc_q, PZERO | PCATCH, "uhidrea", 0);
1.1 augustss 328: DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
1.18 augustss 329: if (sc->sc_dying)
330: error = EIO;
1.1 augustss 331: if (error) {
332: sc->sc_state &= ~UHID_ASLP;
1.18 augustss 333: break;
1.1 augustss 334: }
335: }
336: splx(s);
337:
338: /* Transfer as many chunks as possible. */
1.18 augustss 339: while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
1.1 augustss 340: length = min(sc->sc_q.c_cc, uio->uio_resid);
341: if (length > sizeof(buffer))
342: length = sizeof(buffer);
343:
344: /* Remove a small chunk from the input queue. */
345: (void) q_to_b(&sc->sc_q, buffer, length);
1.29 augustss 346: DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
1.1 augustss 347:
348: /* Copy the data to the user process. */
349: if ((error = uiomove(buffer, length, uio)) != 0)
350: break;
351: }
352:
353: return (error);
354: }
355:
356: int
1.39 augustss 357: uhidread(dev_t dev, struct uio *uio, int flag)
1.1 augustss 358: {
1.25 augustss 359: struct uhid_softc *sc;
360: int error;
361:
1.18 augustss 362: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
363:
364: sc->sc_refcnt++;
365: error = uhid_do_read(sc, uio, flag);
366: if (--sc->sc_refcnt < 0)
1.47 augustss 367: usb_detach_wakeup(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 368: return (error);
369: }
370:
371: int
1.39 augustss 372: uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
1.18 augustss 373: {
1.1 augustss 374: int error;
375: int size;
1.27 augustss 376: usbd_status err;
1.1 augustss 377:
1.18 augustss 378: DPRINTFN(1, ("uhidwrite\n"));
1.52 augustss 379:
1.18 augustss 380: if (sc->sc_dying)
1.1 augustss 381: return (EIO);
382:
383: size = sc->sc_osize;
384: error = 0;
1.18 augustss 385: if (uio->uio_resid != size)
386: return (EINVAL);
387: error = uiomove(sc->sc_obuf, size, uio);
388: if (!error) {
1.47 augustss 389: err = uhidev_set_report(&sc->sc_hdev, UHID_OUTPUT_REPORT,
390: sc->sc_obuf, size);
1.27 augustss 391: if (err)
1.1 augustss 392: error = EIO;
393: }
1.18 augustss 394:
1.1 augustss 395: return (error);
396: }
397:
398: int
1.39 augustss 399: uhidwrite(dev_t dev, struct uio *uio, int flag)
1.18 augustss 400: {
1.25 augustss 401: struct uhid_softc *sc;
402: int error;
403:
1.18 augustss 404: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
405:
406: sc->sc_refcnt++;
407: error = uhid_do_write(sc, uio, flag);
408: if (--sc->sc_refcnt < 0)
1.47 augustss 409: usb_detach_wakeup(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 410: return (error);
411: }
412:
413: int
1.39 augustss 414: uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr,
1.59.2.4 skrll 415: int flag, struct lwp *l)
1.1 augustss 416: {
417: struct usb_ctl_report_desc *rd;
1.2 augustss 418: struct usb_ctl_report *re;
1.47 augustss 419: u_char buffer[UHID_CHUNK];
420: int size, extra;
1.27 augustss 421: usbd_status err;
1.47 augustss 422: void *desc;
1.1 augustss 423:
1.18 augustss 424: DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
425:
426: if (sc->sc_dying)
1.1 augustss 427: return (EIO);
428:
429: switch (cmd) {
1.2 augustss 430: case FIONBIO:
431: /* All handled in the upper FS layer. */
1.37 augustss 432: break;
433:
434: case FIOASYNC:
435: if (*(int *)addr) {
436: if (sc->sc_async != NULL)
437: return (EBUSY);
1.59.2.4 skrll 438: sc->sc_async = l->l_proc;
439: DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", l->l_proc));
1.37 augustss 440: } else
441: sc->sc_async = NULL;
442: break;
443:
444: /* XXX this is not the most general solution. */
445: case TIOCSPGRP:
446: if (sc->sc_async == NULL)
447: return (EINVAL);
448: if (*(int *)addr != sc->sc_async->p_pgid)
449: return (EPERM);
1.2 augustss 450: break;
451:
1.59.2.2 skrll 452: case FIOSETOWN:
453: if (sc->sc_async == NULL)
454: return (EINVAL);
455: if (-*(int *)addr != sc->sc_async->p_pgid
456: && *(int *)addr != sc->sc_async->p_pid);
457: return (EPERM);
458: break;
459:
1.1 augustss 460: case USB_GET_REPORT_DESC:
1.47 augustss 461: uhidev_get_report_desc(sc->sc_hdev.sc_parent, &desc, &size);
1.1 augustss 462: rd = (struct usb_ctl_report_desc *)addr;
1.50 christos 463: size = min(size, sizeof rd->ucrd_data);
464: rd->ucrd_size = size;
465: memcpy(rd->ucrd_data, desc, size);
1.1 augustss 466: break;
1.2 augustss 467:
468: case USB_SET_IMMED:
1.9 augustss 469: if (*(int *)addr) {
1.47 augustss 470: extra = sc->sc_hdev.sc_report_id != 0;
471: err = uhidev_get_report(&sc->sc_hdev, UHID_INPUT_REPORT,
472: buffer, sc->sc_isize + extra);
1.27 augustss 473: if (err)
1.9 augustss 474: return (EOPNOTSUPP);
1.12 augustss 475:
1.2 augustss 476: sc->sc_state |= UHID_IMMED;
1.9 augustss 477: } else
1.2 augustss 478: sc->sc_state &= ~UHID_IMMED;
479: break;
480:
481: case USB_GET_REPORT:
482: re = (struct usb_ctl_report *)addr;
1.50 christos 483: switch (re->ucr_report) {
1.2 augustss 484: case UHID_INPUT_REPORT:
485: size = sc->sc_isize;
486: break;
487: case UHID_OUTPUT_REPORT:
488: size = sc->sc_osize;
489: break;
490: case UHID_FEATURE_REPORT:
491: size = sc->sc_fsize;
492: break;
493: default:
494: return (EINVAL);
495: }
1.47 augustss 496: extra = sc->sc_hdev.sc_report_id != 0;
1.50 christos 497: err = uhidev_get_report(&sc->sc_hdev, re->ucr_report,
498: re->ucr_data, size + extra);
1.47 augustss 499: if (extra)
1.50 christos 500: memcpy(re->ucr_data, re->ucr_data+1, size);
1.35 augustss 501: if (err)
502: return (EIO);
503: break;
504:
505: case USB_SET_REPORT:
506: re = (struct usb_ctl_report *)addr;
1.50 christos 507: switch (re->ucr_report) {
1.35 augustss 508: case UHID_INPUT_REPORT:
509: size = sc->sc_isize;
510: break;
511: case UHID_OUTPUT_REPORT:
512: size = sc->sc_osize;
513: break;
514: case UHID_FEATURE_REPORT:
515: size = sc->sc_fsize;
516: break;
517: default:
518: return (EINVAL);
519: }
1.50 christos 520: err = uhidev_set_report(&sc->sc_hdev, re->ucr_report,
521: re->ucr_data, size);
1.27 augustss 522: if (err)
1.2 augustss 523: return (EIO);
524: break;
525:
1.47 augustss 526: case USB_GET_REPORT_ID:
527: *(int *)addr = sc->sc_hdev.sc_report_id;
528: break;
529:
1.59.2.2 skrll 530: case USB_GET_DEVICEINFO:
531: usbd_fill_deviceinfo(sc->sc_hdev.sc_parent->sc_udev,
532: (struct usb_device_info *)addr, 1);
533: break;
534:
535: case USB_GET_STRING_DESC:
536: {
537: struct usb_string_desc *si = (struct usb_string_desc *)addr;
538: err = usbd_get_string_desc(sc->sc_hdev.sc_parent->sc_udev,
539: si->usd_string_index,
540: si->usd_language_id, &si->usd_desc, &size);
541: if (err)
542: return (EINVAL);
543: break;
544: }
545:
1.1 augustss 546: default:
547: return (EINVAL);
548: }
549: return (0);
550: }
551:
552: int
1.59.2.4 skrll 553: uhidioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l)
1.18 augustss 554: {
1.25 augustss 555: struct uhid_softc *sc;
556: int error;
557:
1.18 augustss 558: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
559:
560: sc->sc_refcnt++;
1.59.2.4 skrll 561: error = uhid_do_ioctl(sc, cmd, addr, flag, l);
1.18 augustss 562: if (--sc->sc_refcnt < 0)
1.47 augustss 563: usb_detach_wakeup(USBDEV(sc->sc_hdev.sc_dev));
1.18 augustss 564: return (error);
565: }
566:
567: int
1.59.2.4 skrll 568: uhidpoll(dev_t dev, int events, struct lwp *l)
1.1 augustss 569: {
1.25 augustss 570: struct uhid_softc *sc;
1.1 augustss 571: int revents = 0;
572: int s;
1.25 augustss 573:
1.12 augustss 574: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
1.1 augustss 575:
1.18 augustss 576: if (sc->sc_dying)
1.1 augustss 577: return (EIO);
578:
1.10 augustss 579: s = splusb();
1.1 augustss 580: if (events & (POLLOUT | POLLWRNORM))
581: revents |= events & (POLLOUT | POLLWRNORM);
1.4 veego 582: if (events & (POLLIN | POLLRDNORM)) {
1.1 augustss 583: if (sc->sc_q.c_cc > 0)
584: revents |= events & (POLLIN | POLLRDNORM);
585: else
1.59.2.4 skrll 586: selrecord(l, &sc->sc_rsel);
1.4 veego 587: }
1.1 augustss 588:
589: splx(s);
590: return (revents);
1.55 jdolecek 591: }
592:
593: static void
594: filt_uhidrdetach(struct knote *kn)
595: {
596: struct uhid_softc *sc = kn->kn_hook;
597: int s;
598:
599: s = splusb();
1.56 christos 600: SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext);
1.55 jdolecek 601: splx(s);
602: }
603:
604: static int
605: filt_uhidread(struct knote *kn, long hint)
606: {
607: struct uhid_softc *sc = kn->kn_hook;
608:
609: kn->kn_data = sc->sc_q.c_cc;
610: return (kn->kn_data > 0);
611: }
612:
613: static const struct filterops uhidread_filtops =
614: { 1, NULL, filt_uhidrdetach, filt_uhidread };
615:
616: static const struct filterops uhid_seltrue_filtops =
617: { 1, NULL, filt_uhidrdetach, filt_seltrue };
618:
619: int
620: uhidkqfilter(dev_t dev, struct knote *kn)
621: {
622: struct uhid_softc *sc;
623: struct klist *klist;
624: int s;
625:
626: USB_GET_SC(uhid, UHIDUNIT(dev), sc);
627:
628: if (sc->sc_dying)
629: return (EIO);
630:
631: switch (kn->kn_filter) {
632: case EVFILT_READ:
1.56 christos 633: klist = &sc->sc_rsel.sel_klist;
1.55 jdolecek 634: kn->kn_fop = &uhidread_filtops;
635: break;
636:
637: case EVFILT_WRITE:
1.56 christos 638: klist = &sc->sc_rsel.sel_klist;
1.55 jdolecek 639: kn->kn_fop = &uhid_seltrue_filtops;
640: break;
641:
642: default:
643: return (1);
644: }
645:
646: kn->kn_hook = sc;
647:
648: s = splusb();
649: SLIST_INSERT_HEAD(klist, kn, kn_selnext);
650: splx(s);
651:
652: return (0);
1.1 augustss 653: }
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