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("$FreeBSD$");
   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/clist.h>
  59 #include <sys/kernel.h>
  60 #include <sys/lock.h>
  61 #include <sys/malloc.h>
  62 #include <sys/mutex.h>
  63 #include <sys/signalvar.h>
  64 #include <sys/fcntl.h>
  65 #include <sys/ioccom.h>
  66 #include <sys/filio.h>
  67 #include <sys/module.h>
  68 #include <sys/bus.h>
  69 #include <sys/ioccom.h>
  70 #include <sys/conf.h>
  71 #include <sys/selinfo.h>
  72 #include <sys/proc.h>
  73 #include <sys/poll.h>
  74 #include <sys/sysctl.h>
  75 #include <sys/ttycom.h>
  76 #include <sys/uio.h>
  77
  78 #include <dev/usb/usb.h>
  79 #include <dev/usb/usbhid.h>
  80
  81 #include "usbdevs.h"
  82 #include <dev/usb/usbdi.h>
  83 #include <dev/usb/usbdi_util.h>
  84 #include <dev/usb/hid.h>
  85
  86 /* Replacement report descriptors for devices shipped with broken ones */
  87 #include <dev/usb/ugraphire_rdesc.h>
  88 #include <dev/usb/uxb360gp_rdesc.h>
  89
  90 /* For hid blacklist quirk */
  91 #include <dev/usb/usb_quirks.h>
  92
  93 #ifdef USB_DEBUG
  94 #define DPRINTF(x)      if (uhiddebug) printf x
  95 #define DPRINTFN(n,x)   if (uhiddebug>(n)) printf x
  96 int     uhiddebug = 0;
  97 SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
  98 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
  99            &uhiddebug, 0, "uhid debug level");
 100 #else
 101 #define DPRINTF(x)
 102 #define DPRINTFN(n,x)
 103 #endif
 104
 105 struct uhid_softc {
 106         device_t sc_dev;                        /* base device */
 107         usbd_device_handle sc_udev;
 108         usbd_interface_handle sc_iface; /* interface */
 109         usbd_pipe_handle sc_intrpipe;   /* interrupt pipe */
 110         int sc_ep_addr;
 111
 112         int sc_isize;
 113         int sc_osize;
 114         int sc_fsize;
 115         u_int8_t sc_iid;
 116         u_int8_t sc_oid;
 117         u_int8_t sc_fid;
 118
 119         u_char *sc_ibuf;
 120         u_char *sc_obuf;
 121
 122         void *sc_repdesc;
 123         int sc_repdesc_size;
 124
 125         struct clist sc_q;
 126         struct selinfo sc_rsel;
 127         struct proc *sc_async;  /* process that wants SIGIO */
 128         u_char sc_state;        /* driver state */
 129 #define UHID_OPEN       0x01    /* device is open */
 130 #define UHID_ASLP       0x02    /* waiting for device data */
 131 #define UHID_NEEDCLEAR  0x04    /* needs clearing endpoint stall */
 132 #define UHID_IMMED      0x08    /* return read data immediately */
 133
 134         int sc_refcnt;
 135         u_char sc_dying;
 136
 137         struct cdev *dev;
 138 };
 139
 140 #define UHIDUNIT(dev)   (dev2unit(dev))
 141 #define UHID_CHUNK      128     /* chunk size for read */
 142 #define UHID_BSIZE      1020    /* buffer size */
 143
 144 d_open_t        uhidopen;
 145 d_close_t       uhidclose;
 146 d_read_t        uhidread;
 147 d_write_t       uhidwrite;
 148 d_ioctl_t       uhidioctl;
 149 d_poll_t        uhidpoll;
 150
 151
 152 static struct cdevsw uhid_cdevsw = {
 153         .d_version =    D_VERSION,
 154         .d_flags =      D_NEEDGIANT,
 155         .d_open =       uhidopen,
 156         .d_close =      uhidclose,
 157         .d_read =       uhidread,
 158         .d_write =      uhidwrite,
 159         .d_ioctl =      uhidioctl,
 160         .d_poll =       uhidpoll,
 161         .d_name =       "uhid",
 162 };
 163
 164 static void uhid_intr(usbd_xfer_handle, usbd_private_handle,
 165                            usbd_status);
 166
 167 static int uhid_do_read(struct uhid_softc *, struct uio *uio, int);
 168 static int uhid_do_write(struct uhid_softc *, struct uio *uio, int);
 169 static int uhid_do_ioctl(struct uhid_softc *, u_long, caddr_t, int,
 170                               struct thread *);
 171
 172 MODULE_DEPEND(uhid, usb, 1, 1, 1);
 173
 174 static device_probe_t uhid_match;
 175 static device_attach_t uhid_attach;
 176 static device_detach_t uhid_detach;
 177
 178 static device_method_t uhid_methods[] = {
 179         /* Device interface */
 180         DEVMETHOD(device_probe,         uhid_match),
 181         DEVMETHOD(device_attach,        uhid_attach),
 182         DEVMETHOD(device_detach,        uhid_detach),
 183
 184         { 0, 0 }
 185 };
 186
 187 static driver_t uhid_driver = {
 188         "uhid",
 189         uhid_methods,
 190         sizeof(struct uhid_softc)
 191 };
 192
 193 static devclass_t uhid_devclass;
 194
 195 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, usbd_driver_load, 0);
 196
 197 static int
 198 uhid_match(device_t self)
 199 {
 200         struct usb_attach_arg *uaa = device_get_ivars(self);
 201         usb_interface_descriptor_t *id;
 202
 203         if (uaa->iface == NULL)
 204                 return (UMATCH_NONE);
 205         id = usbd_get_interface_descriptor(uaa->iface);
 206         if (id == NULL)
 207                 return (UMATCH_NONE);
 208         if  (id->bInterfaceClass != UICLASS_HID) {
 209                 /* The Xbox 360 gamepad doesn't use the HID class. */
 210                 if (id->bInterfaceClass != UICLASS_VENDOR ||
 211                     id->bInterfaceSubClass != UISUBCLASS_XBOX360_CONTROLLER ||
 212                     id->bInterfaceProtocol != UIPROTO_XBOX360_GAMEPAD)
 213                         return (UMATCH_NONE);
 214         }
 215         if (usbd_get_quirks(uaa->device)->uq_flags & UQ_HID_IGNORE)
 216                 return (UMATCH_NONE);
 217 #if 0
 218         if (uaa->matchlvl)
 219                 return (uaa->matchlvl);
 220 #endif
 221
 222         return (UMATCH_IFACECLASS_GENERIC);
 223 }
 224
 225 static int
 226 uhid_attach(device_t self)
 227 {
 228         struct uhid_softc *sc = device_get_softc(self);
 229         struct usb_attach_arg *uaa = device_get_ivars(self);
 230         usbd_interface_handle iface = uaa->iface;
 231         usb_interface_descriptor_t *id;
 232         usb_endpoint_descriptor_t *ed;
 233         int size;
 234         void *desc;
 235         const void *descptr;
 236         usbd_status err;
 237
 238         sc->sc_dev = self;
 239         sc->sc_udev = uaa->device;
 240         sc->sc_iface = iface;
 241         id = usbd_get_interface_descriptor(iface);
 242
 243         ed = usbd_interface2endpoint_descriptor(iface, 0);
 244         if (ed == NULL) {
 245                 printf("%s: could not read endpoint descriptor\n",
 246                        device_get_nameunit(sc->sc_dev));
 247                 sc->sc_dying = 1;
 248                 return ENXIO;
 249         }
 250
 251         DPRINTFN(10,("uhid_attach: bLength=%d bDescriptorType=%d "
 252                      "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
 253                      " bInterval=%d\n",
 254                      ed->bLength, ed->bDescriptorType,
 255                      ed->bEndpointAddress & UE_ADDR,
 256                      UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
 257                      ed->bmAttributes & UE_XFERTYPE,
 258                      UGETW(ed->wMaxPacketSize), ed->bInterval));
 259
 260         if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
 261             (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 262                 printf("%s: unexpected endpoint\n", device_get_nameunit(sc->sc_dev));
 263                 sc->sc_dying = 1;
 264                 return ENXIO;
 265         }
 266
 267         sc->sc_ep_addr = ed->bEndpointAddress;
 268
 269         descptr = NULL;
 270         if (uaa->vendor == USB_VENDOR_WACOM) {
 271                 /* The report descriptor for the Wacom Graphire is broken. */
 272                 if (uaa->product == USB_PRODUCT_WACOM_GRAPHIRE) {
 273                         size = sizeof uhid_graphire_report_descr;
 274                         descptr = uhid_graphire_report_descr;
 275                 } else if (uaa->product == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) {
 276                         static uByte reportbuf[] = {2, 2, 2};
 277
 278                         /*
 279                          * The Graphire3 needs 0x0202 to be written to
 280                          * feature report ID 2 before it'll start
 281                          * returning digitizer data.
 282                          */
 283                         usbd_set_report(uaa->iface, UHID_FEATURE_REPORT, 2,
 284                             &reportbuf, sizeof reportbuf);
 285
 286                         size = sizeof uhid_graphire3_4x5_report_descr;
 287                         descptr = uhid_graphire3_4x5_report_descr;
 288                 }
 289         } else if (id->bInterfaceClass == UICLASS_VENDOR &&
 290             id->bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER &&
 291             id->bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD) {
 292                 static uByte reportbuf[] = {1, 3, 0};
 293
 294                 /* The LEDs on the gamepad are blinking by default, turn off. */
 295                 usbd_set_report(uaa->iface, UHID_OUTPUT_REPORT, 0,
 296                     &reportbuf, sizeof reportbuf);
 297
 298                 /* The Xbox 360 gamepad has no report descriptor. */
 299                 size = sizeof uhid_xb360gp_report_descr;
 300                 descptr = uhid_xb360gp_report_descr;
 301         }
 302
 303         if (descptr) {
 304                 desc = malloc(size, M_USBDEV, M_NOWAIT);
 305                 if (desc == NULL)
 306                         err = USBD_NOMEM;
 307                 else {
 308                         err = USBD_NORMAL_COMPLETION;
 309                         memcpy(desc, descptr, size);
 310                 }
 311         } else {
 312                 desc = NULL;
 313                 err = usbd_read_report_desc(uaa->iface, &desc, &size,M_USBDEV);
 314         }
 315
 316         if (err) {
 317                 printf("%s: no report descriptor\n", device_get_nameunit(sc->sc_dev));
 318                 sc->sc_dying = 1;
 319                 return ENXIO;
 320         }
 321
 322         (void)usbd_set_idle(iface, 0, 0);
 323
 324         sc->sc_isize = hid_report_size(desc, size, hid_input,   &sc->sc_iid);
 325         sc->sc_osize = hid_report_size(desc, size, hid_output,  &sc->sc_oid);
 326         sc->sc_fsize = hid_report_size(desc, size, hid_feature, &sc->sc_fid);
 327
 328         sc->sc_repdesc = desc;
 329         sc->sc_repdesc_size = size;
 330         sc->dev = make_dev(&uhid_cdevsw, device_get_unit(self),
 331                         UID_ROOT, GID_OPERATOR,
 332                         0644, "uhid%d", device_get_unit(self));
 333         return 0;
 334 }
 335
 336 static int
 337 uhid_detach(device_t self)
 338 {
 339         struct uhid_softc *sc = device_get_softc(self);
 340         int s;
 341
 342         DPRINTF(("uhid_detach: sc=%p\n", sc));
 343         sc->sc_dying = 1;
 344         if (sc->sc_intrpipe != NULL)
 345                 usbd_abort_pipe(sc->sc_intrpipe);
 346
 347         if (sc->sc_state & UHID_OPEN) {
 348                 s = splusb();
 349                 if (--sc->sc_refcnt >= 0) {
 350                         /* Wake everyone */
 351                         wakeup(&sc->sc_q);
 352                         /* Wait for processes to go away. */
 353                         usb_detach_wait(sc->sc_dev);
 354                 }
 355                 splx(s);
 356         }
 357         destroy_dev(sc->dev);
 358
 359         if (sc->sc_repdesc)
 360                 free(sc->sc_repdesc, M_USBDEV);
 361
 362         return (0);
 363 }
 364
 365 void
 366 uhid_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 367 {
 368         struct uhid_softc *sc = addr;
 369
 370 #ifdef USB_DEBUG
 371         if (uhiddebug > 5) {
 372                 u_int32_t cc, i;
 373
 374                 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
 375                 DPRINTF(("uhid_intr: status=%d cc=%d\n", status, cc));
 376                 DPRINTF(("uhid_intr: data ="));
 377                 for (i = 0; i < cc; i++)
 378                         DPRINTF((" %02x", sc->sc_ibuf[i]));
 379                 DPRINTF(("\n"));
 380         }
 381 #endif
 382
 383         if (status == USBD_CANCELLED)
 384                 return;
 385
 386         if (status != USBD_NORMAL_COMPLETION) {
 387                 DPRINTF(("uhid_intr: status=%d\n", status));
 388                 if (status == USBD_STALLED)
 389                     sc->sc_state |= UHID_NEEDCLEAR;
 390                 return;
 391         }
 392
 393         (void) b_to_q(sc->sc_ibuf, sc->sc_isize, &sc->sc_q);
 394
 395         if (sc->sc_state & UHID_ASLP) {
 396                 sc->sc_state &= ~UHID_ASLP;
 397                 DPRINTFN(5, ("uhid_intr: waking %p\n", &sc->sc_q));
 398                 wakeup(&sc->sc_q);
 399         }
 400         selwakeuppri(&sc->sc_rsel, PZERO);
 401         if (sc->sc_async != NULL) {
 402                 DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
 403                 PROC_LOCK(sc->sc_async);
 404                 psignal(sc->sc_async, SIGIO);
 405                 PROC_UNLOCK(sc->sc_async);
 406         }
 407 }
 408
 409 int
 410 uhidopen(struct cdev *dev, int flag, int mode, struct thread *p)
 411 {
 412         struct uhid_softc *sc;
 413         usbd_status err;
 414
 415         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 416         if (sc == NULL)
 417                 return (ENXIO);
 418
 419         DPRINTF(("uhidopen: sc=%p\n", sc));
 420
 421         if (sc->sc_dying)
 422                 return (ENXIO);
 423
 424         if (sc->sc_state & UHID_OPEN)
 425                 return (EBUSY);
 426         sc->sc_state |= UHID_OPEN;
 427
 428         clist_alloc_cblocks(&sc->sc_q, UHID_BSIZE, UHID_BSIZE);
 429         sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 430         sc->sc_obuf = malloc(sc->sc_osize, M_USBDEV, M_WAITOK);
 431
 432         /* Set up interrupt pipe. */
 433         err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
 434                   USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf,
 435                   sc->sc_isize, uhid_intr, USBD_DEFAULT_INTERVAL);
 436         if (err) {
 437                 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, "
 438                          "error=%d\n",err));
 439                 free(sc->sc_ibuf, M_USBDEV);
 440                 free(sc->sc_obuf, M_USBDEV);
 441                 sc->sc_ibuf = sc->sc_obuf = NULL;
 442
 443                 sc->sc_state &= ~UHID_OPEN;
 444                 return (EIO);
 445         }
 446
 447         sc->sc_state &= ~UHID_IMMED;
 448
 449         sc->sc_async = 0;
 450
 451         return (0);
 452 }
 453
 454 int
 455 uhidclose(struct cdev *dev, int flag, int mode, struct thread *p)
 456 {
 457         struct uhid_softc *sc;
 458
 459         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 460
 461         DPRINTF(("uhidclose: sc=%p\n", sc));
 462
 463         /* Disable interrupts. */
 464         usbd_abort_pipe(sc->sc_intrpipe);
 465         usbd_close_pipe(sc->sc_intrpipe);
 466         sc->sc_intrpipe = 0;
 467
 468         ndflush(&sc->sc_q, sc->sc_q.c_cc);
 469         clist_free_cblocks(&sc->sc_q);
 470
 471         free(sc->sc_ibuf, M_USBDEV);
 472         free(sc->sc_obuf, M_USBDEV);
 473         sc->sc_ibuf = sc->sc_obuf = NULL;
 474
 475         sc->sc_state &= ~UHID_OPEN;
 476
 477         sc->sc_async = 0;
 478
 479         return (0);
 480 }
 481
 482 int
 483 uhid_do_read(struct uhid_softc *sc, struct uio *uio, int flag)
 484 {
 485         int s;
 486         int error = 0;
 487         size_t length;
 488         u_char buffer[UHID_CHUNK];
 489         usbd_status err;
 490
 491         DPRINTFN(1, ("uhidread\n"));
 492         if (sc->sc_state & UHID_IMMED) {
 493                 DPRINTFN(1, ("uhidread immed\n"));
 494
 495                 err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 496                           sc->sc_iid, buffer, sc->sc_isize);
 497                 if (err)
 498                         return (EIO);
 499                 return (uiomove(buffer, sc->sc_isize, uio));
 500         }
 501
 502         s = splusb();
 503         while (sc->sc_q.c_cc == 0) {
 504                 if (flag & O_NONBLOCK) {
 505                         splx(s);
 506                         return (EWOULDBLOCK);
 507                 }
 508                 sc->sc_state |= UHID_ASLP;
 509                 DPRINTFN(5, ("uhidread: sleep on %p\n", &sc->sc_q));
 510                 error = tsleep(&sc->sc_q, PZERO | PCATCH, "uhidrea", 0);
 511                 DPRINTFN(5, ("uhidread: woke, error=%d\n", error));
 512                 if (sc->sc_dying)
 513                         error = EIO;
 514                 if (error) {
 515                         sc->sc_state &= ~UHID_ASLP;
 516                         break;
 517                 }
 518                 if (sc->sc_state & UHID_NEEDCLEAR) {
 519                         DPRINTFN(-1,("uhidread: clearing stall\n"));
 520                         sc->sc_state &= ~UHID_NEEDCLEAR;
 521                         usbd_clear_endpoint_stall(sc->sc_intrpipe);
 522                 }
 523         }
 524         splx(s);
 525
 526         /* Transfer as many chunks as possible. */
 527         while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 528                 length = min(sc->sc_q.c_cc, uio->uio_resid);
 529                 if (length > sizeof(buffer))
 530                         length = sizeof(buffer);
 531
 532                 /* Remove a small chunk from the input queue. */
 533                 (void) q_to_b(&sc->sc_q, buffer, length);
 534                 DPRINTFN(5, ("uhidread: got %lu chars\n", (u_long)length));
 535
 536                 /* Copy the data to the user process. */
 537                 if ((error = uiomove(buffer, length, uio)) != 0)
 538                         break;
 539         }
 540
 541         return (error);
 542 }
 543
 544 int
 545 uhidread(struct cdev *dev, struct uio *uio, int flag)
 546 {
 547         struct uhid_softc *sc;
 548         int error;
 549
 550         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 551         sc->sc_refcnt++;
 552         error = uhid_do_read(sc, uio, flag);
 553         if (--sc->sc_refcnt < 0)
 554                 usb_detach_wakeup(sc->sc_dev);
 555         return (error);
 556 }
 557
 558 int
 559 uhid_do_write(struct uhid_softc *sc, struct uio *uio, int flag)
 560 {
 561         int error;
 562         int size;
 563         usbd_status err;
 564
 565         DPRINTFN(1, ("uhidwrite\n"));
 566
 567         if (sc->sc_dying)
 568                 return (EIO);
 569
 570         size = sc->sc_osize;
 571         error = 0;
 572         if (uio->uio_resid != size)
 573                 return (EINVAL);
 574         error = uiomove(sc->sc_obuf, size, uio);
 575         if (!error) {
 576                 if (sc->sc_oid)
 577                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 578                                   sc->sc_obuf[0], sc->sc_obuf+1, size-1);
 579                 else
 580                         err = usbd_set_report(sc->sc_iface, UHID_OUTPUT_REPORT,
 581                                   0, sc->sc_obuf, size);
 582                 if (err)
 583                         error = EIO;
 584         }
 585
 586         return (error);
 587 }
 588
 589 int
 590 uhidwrite(struct cdev *dev, struct uio *uio, int flag)
 591 {
 592         struct uhid_softc *sc;
 593         int error;
 594
 595         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 596         sc->sc_refcnt++;
 597         error = uhid_do_write(sc, uio, flag);
 598         if (--sc->sc_refcnt < 0)
 599                 usb_detach_wakeup(sc->sc_dev);
 600         return (error);
 601 }
 602
 603 int
 604 uhid_do_ioctl(struct uhid_softc *sc, u_long cmd, caddr_t addr, int flag,
 605               struct thread *p)
 606 {
 607         struct usb_ctl_report_desc *rd;
 608         struct usb_ctl_report *re;
 609         int size, id;
 610         usbd_status err;
 611
 612         DPRINTFN(2, ("uhidioctl: cmd=%lx\n", cmd));
 613
 614         if (sc->sc_dying)
 615                 return (EIO);
 616
 617         switch (cmd) {
 618         case FIONBIO:
 619                 /* All handled in the upper FS layer. */
 620                 break;
 621
 622         case FIOASYNC:
 623                 if (*(int *)addr) {
 624                         if (sc->sc_async != NULL)
 625                                 return (EBUSY);
 626                         sc->sc_async = p->td_proc;
 627                         DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", sc->sc_async));
 628                 } else
 629                         sc->sc_async = NULL;
 630                 break;
 631
 632         /* XXX this is not the most general solution. */
 633         case TIOCSPGRP:
 634                 if (sc->sc_async == NULL)
 635                         return (EINVAL);
 636                 if (*(int *)addr != sc->sc_async->p_pgid)
 637                         return (EPERM);
 638                 break;
 639
 640         case USB_GET_REPORT_DESC:
 641                 rd = (struct usb_ctl_report_desc *)addr;
 642                 size = min(sc->sc_repdesc_size, sizeof rd->ucrd_data);
 643                 rd->ucrd_size = size;
 644                 memcpy(rd->ucrd_data, sc->sc_repdesc, size);
 645                 break;
 646
 647         case USB_SET_IMMED:
 648                 if (*(int *)addr) {
 649                         /* XXX should read into ibuf, but does it matter? */
 650                         err = usbd_get_report(sc->sc_iface, UHID_INPUT_REPORT,
 651                                   sc->sc_iid, sc->sc_ibuf, sc->sc_isize);
 652                         if (err)
 653                                 return (EOPNOTSUPP);
 654
 655                         sc->sc_state |=  UHID_IMMED;
 656                 } else
 657                         sc->sc_state &= ~UHID_IMMED;
 658                 break;
 659
 660         case USB_GET_REPORT:
 661                 re = (struct usb_ctl_report *)addr;
 662                 switch (re->ucr_report) {
 663                 case UHID_INPUT_REPORT:
 664                         size = sc->sc_isize;
 665                         id = sc->sc_iid;
 666                         break;
 667                 case UHID_OUTPUT_REPORT:
 668                         size = sc->sc_osize;
 669                         id = sc->sc_oid;
 670                         break;
 671                 case UHID_FEATURE_REPORT:
 672                         size = sc->sc_fsize;
 673                         id = sc->sc_fid;
 674                         break;
 675                 default:
 676                         return (EINVAL);
 677                 }
 678                 err = usbd_get_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 679                           size);
 680                 if (err)
 681                         return (EIO);
 682                 break;
 683
 684         case USB_SET_REPORT:
 685                 re = (struct usb_ctl_report *)addr;
 686                 switch (re->ucr_report) {
 687                 case UHID_INPUT_REPORT:
 688                         size = sc->sc_isize;
 689                         id = sc->sc_iid;
 690                         break;
 691                 case UHID_OUTPUT_REPORT:
 692                         size = sc->sc_osize;
 693                         id = sc->sc_oid;
 694                         break;
 695                 case UHID_FEATURE_REPORT:
 696                         size = sc->sc_fsize;
 697                         id = sc->sc_fid;
 698                         break;
 699                 default:
 700                         return (EINVAL);
 701                 }
 702                 err = usbd_set_report(sc->sc_iface, re->ucr_report, id, re->ucr_data,
 703                           size);
 704                 if (err)
 705                         return (EIO);
 706                 break;
 707
 708         case USB_GET_REPORT_ID:
 709                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 710                 break;
 711
 712         default:
 713                 return (EINVAL);
 714         }
 715         return (0);
 716 }
 717
 718 int
 719 uhidioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *p)
 720 {
 721         struct uhid_softc *sc;
 722         int error;
 723
 724         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 725         sc->sc_refcnt++;
 726         error = uhid_do_ioctl(sc, cmd, addr, flag, p);
 727         if (--sc->sc_refcnt < 0)
 728                 usb_detach_wakeup(sc->sc_dev);
 729         return (error);
 730 }
 731
 732 int
 733 uhidpoll(struct cdev *dev, int events, struct thread *p)
 734 {
 735         struct uhid_softc *sc;
 736         int revents = 0;
 737         int s;
 738
 739         sc = devclass_get_softc(uhid_devclass, UHIDUNIT(dev));
 740         if (sc->sc_dying)
 741                 return (EIO);
 742
 743         s = splusb();
 744         if (events & (POLLOUT | POLLWRNORM))
 745                 revents |= events & (POLLOUT | POLLWRNORM);
 746         if (events & (POLLIN | POLLRDNORM)) {
 747                 if (sc->sc_q.c_cc > 0)
 748                         revents |= events & (POLLIN | POLLRDNORM);
 749                 else
 750                         selrecord(p, &sc->sc_rsel);
 751         }
 752
 753         splx(s);
 754         return (revents);
 755 }