sys/bus/u4b/input/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 /*-
   8  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   9  * All rights reserved.
  10  *
  11  * This code is derived from software contributed to The NetBSD Foundation
  12  * by Lennart Augustsson (lennart@augustsson.net) at
  13  * Carlstedt Research & Technology.
  14  *
  15  * Redistribution and use in source and binary forms, with or without
  16  * modification, are permitted provided that the following conditions
  17  * are met:
  18  * 1. Redistributions of source code must retain the above copyright
  19  *    notice, this list of conditions and the following disclaimer.
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in the
  22  *    documentation and/or other materials provided with the distribution.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf
  39  */
  40
  41 #include <sys/stdint.h>
  42 #include <sys/param.h>
  43 #include <sys/queue.h>
  44 #include <sys/types.h>
  45 #include <sys/systm.h>
  46 #include <sys/kernel.h>
  47 #include <sys/bus.h>
  48 #include <sys/module.h>
  49 #include <sys/lock.h>
  50 #include <sys/condvar.h>
  51 #include <sys/sysctl.h>
  52 #include <sys/unistd.h>
  53 #include <sys/callout.h>
  54 #include <sys/malloc.h>
  55 #include <sys/priv.h>
  56 #include <sys/conf.h>
  57 #include <sys/fcntl.h>
  58
  59 #include <bus/u4b/usbdevs.h>
  60 #include <bus/u4b/usb.h>
  61 #include <bus/u4b/usbdi.h>
  62 #include <bus/u4b/usbdi_util.h>
  63 #include <bus/u4b/usbhid.h>
  64 #include <bus/u4b/usb_ioctl.h>
  65
  66 #define USB_DEBUG_VAR uhid_debug
  67 #include <bus/u4b/usb_debug.h>
  68
  69 #include <bus/u4b/input/usb_rdesc.h>
  70 #include <bus/u4b/quirk/usb_quirk.h>
  71
  72 #ifdef USB_DEBUG
  73 static int uhid_debug = 0;
  74
  75 static SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
  76 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
  77     &uhid_debug, 0, "Debug level");
  78 #endif
  79
  80 #define UHID_BSIZE      1024            /* bytes, buffer size */
  81 #define UHID_FRAME_NUM    50            /* bytes, frame number */
  82
  83 enum {
  84         UHID_INTR_DT_RD,
  85         UHID_CTRL_DT_WR,
  86         UHID_CTRL_DT_RD,
  87         UHID_N_TRANSFER,
  88 };
  89
  90 struct uhid_softc {
  91         struct usb_fifo_sc sc_fifo;
  92         struct lock sc_lock;
  93
  94         struct usb_xfer *sc_xfer[UHID_N_TRANSFER];
  95         struct usb_device *sc_udev;
  96         void   *sc_repdesc_ptr;
  97
  98         uint32_t sc_isize;
  99         uint32_t sc_osize;
 100         uint32_t sc_fsize;
 101
 102         uint16_t sc_repdesc_size;
 103
 104         uint8_t sc_iface_no;
 105         uint8_t sc_iface_index;
 106         uint8_t sc_iid;
 107         uint8_t sc_oid;
 108         uint8_t sc_fid;
 109         uint8_t sc_flags;
 110 #define UHID_FLAG_IMMED        0x01     /* set if read should be immediate */
 111 #define UHID_FLAG_STATIC_DESC  0x04     /* set if report descriptors are
 112                                          * static */
 113 };
 114
 115 static const uint8_t uhid_xb360gp_report_descr[] = {UHID_XB360GP_REPORT_DESCR()};
 116 static const uint8_t uhid_graphire_report_descr[] = {UHID_GRAPHIRE_REPORT_DESCR()};
 117 static const uint8_t uhid_graphire3_4x5_report_descr[] = {UHID_GRAPHIRE3_4X5_REPORT_DESCR()};
 118
 119 /* prototypes */
 120
 121 static device_probe_t uhid_probe;
 122 static device_attach_t uhid_attach;
 123 static device_detach_t uhid_detach;
 124
 125 static usb_callback_t uhid_intr_callback;
 126 static usb_callback_t uhid_write_callback;
 127 static usb_callback_t uhid_read_callback;
 128
 129 static usb_fifo_cmd_t uhid_start_read;
 130 static usb_fifo_cmd_t uhid_stop_read;
 131 static usb_fifo_cmd_t uhid_start_write;
 132 static usb_fifo_cmd_t uhid_stop_write;
 133 static usb_fifo_open_t uhid_open;
 134 static usb_fifo_close_t uhid_close;
 135 static usb_fifo_ioctl_t uhid_ioctl;
 136
 137 static struct usb_fifo_methods uhid_fifo_methods = {
 138         .f_open = &uhid_open,
 139         .f_close = &uhid_close,
 140         .f_ioctl = &uhid_ioctl,
 141         .f_start_read = &uhid_start_read,
 142         .f_stop_read = &uhid_stop_read,
 143         .f_start_write = &uhid_start_write,
 144         .f_stop_write = &uhid_stop_write,
 145         .basename[0] = "uhid",
 146 };
 147
 148 static void
 149 uhid_intr_callback(struct usb_xfer *xfer, usb_error_t error)
 150 {
 151         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 152         struct usb_page_cache *pc;
 153         int actlen;
 154
 155         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 156
 157         switch (USB_GET_STATE(xfer)) {
 158         case USB_ST_TRANSFERRED:
 159                 DPRINTF("transferred!\n");
 160
 161                 pc = usbd_xfer_get_frame(xfer, 0);
 162
 163                 /*
 164                  * If the ID byte is non zero we allow descriptors
 165                  * having multiple sizes:
 166                  */
 167                 if ((actlen >= sc->sc_isize) ||
 168                     ((actlen > 0) && (sc->sc_iid != 0))) {
 169                         /* limit report length to the maximum */
 170                         if (actlen > sc->sc_isize)
 171                                 actlen = sc->sc_isize;
 172                         usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc,
 173                             0, actlen, 1);
 174                 } else {
 175                         /* ignore it */
 176                         DPRINTF("ignored transfer, %d bytes\n", actlen);
 177                 }
 178
 179         case USB_ST_SETUP:
 180 re_submit:
 181                 if (usb_fifo_put_bytes_max(
 182                     sc->sc_fifo.fp[USB_FIFO_RX]) != 0) {
 183                         usbd_xfer_set_frame_len(xfer, 0, sc->sc_isize);
 184                         usbd_transfer_submit(xfer);
 185                 }
 186                 return;
 187
 188         default:                        /* Error */
 189                 if (error != USB_ERR_CANCELLED) {
 190                         /* try to clear stall first */
 191                         usbd_xfer_set_stall(xfer);
 192                         goto re_submit;
 193                 }
 194                 return;
 195         }
 196 }
 197
 198 static void
 199 uhid_fill_set_report(struct usb_device_request *req, uint8_t iface_no,
 200     uint8_t type, uint8_t id, uint16_t size)
 201 {
 202         req->bmRequestType = UT_WRITE_CLASS_INTERFACE;
 203         req->bRequest = UR_SET_REPORT;
 204         USETW2(req->wValue, type, id);
 205         req->wIndex[0] = iface_no;
 206         req->wIndex[1] = 0;
 207         USETW(req->wLength, size);
 208 }
 209
 210 static void
 211 uhid_fill_get_report(struct usb_device_request *req, uint8_t iface_no,
 212     uint8_t type, uint8_t id, uint16_t size)
 213 {
 214         req->bmRequestType = UT_READ_CLASS_INTERFACE;
 215         req->bRequest = UR_GET_REPORT;
 216         USETW2(req->wValue, type, id);
 217         req->wIndex[0] = iface_no;
 218         req->wIndex[1] = 0;
 219         USETW(req->wLength, size);
 220 }
 221
 222 static void
 223 uhid_write_callback(struct usb_xfer *xfer, usb_error_t error)
 224 {
 225         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 226         struct usb_device_request req;
 227         struct usb_page_cache *pc;
 228         uint32_t size = sc->sc_osize;
 229         uint32_t actlen;
 230         uint8_t id;
 231
 232         switch (USB_GET_STATE(xfer)) {
 233         case USB_ST_TRANSFERRED:
 234         case USB_ST_SETUP:
 235                 /* try to extract the ID byte */
 236                 if (sc->sc_oid) {
 237                         pc = usbd_xfer_get_frame(xfer, 0);
 238                         if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
 239                             0, 1, &actlen, 0)) {
 240                                 if (actlen != 1) {
 241                                         goto tr_error;
 242                                 }
 243                                 usbd_copy_out(pc, 0, &id, 1);
 244
 245                         } else {
 246                                 return;
 247                         }
 248                         if (size) {
 249                                 size--;
 250                         }
 251                 } else {
 252                         id = 0;
 253                 }
 254
 255                 pc = usbd_xfer_get_frame(xfer, 1);
 256                 if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
 257                     0, UHID_BSIZE, &actlen, 1)) {
 258                         if (actlen != size) {
 259                                 goto tr_error;
 260                         }
 261                         uhid_fill_set_report
 262                             (&req, sc->sc_iface_no,
 263                             UHID_OUTPUT_REPORT, id, size);
 264
 265                         pc = usbd_xfer_get_frame(xfer, 0);
 266                         usbd_copy_in(pc, 0, &req, sizeof(req));
 267
 268                         usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
 269                         usbd_xfer_set_frame_len(xfer, 1, size);
 270                         usbd_xfer_set_frames(xfer, size ? 2 : 1);
 271                         usbd_transfer_submit(xfer);
 272                 }
 273                 return;
 274
 275         default:
 276 tr_error:
 277                 /* bomb out */
 278                 usb_fifo_get_data_error(sc->sc_fifo.fp[USB_FIFO_TX]);
 279                 return;
 280         }
 281 }
 282
 283 static void
 284 uhid_read_callback(struct usb_xfer *xfer, usb_error_t error)
 285 {
 286         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 287         struct usb_device_request req;
 288         struct usb_page_cache *pc;
 289
 290         pc = usbd_xfer_get_frame(xfer, 0);
 291
 292         switch (USB_GET_STATE(xfer)) {
 293         case USB_ST_TRANSFERRED:
 294                 usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, sizeof(req),
 295                     sc->sc_isize, 1);
 296                 return;
 297
 298         case USB_ST_SETUP:
 299
 300                 if (usb_fifo_put_bytes_max(sc->sc_fifo.fp[USB_FIFO_RX]) > 0) {
 301
 302                         uhid_fill_get_report
 303                             (&req, sc->sc_iface_no, UHID_INPUT_REPORT,
 304                             sc->sc_iid, sc->sc_isize);
 305
 306                         usbd_copy_in(pc, 0, &req, sizeof(req));
 307
 308                         usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
 309                         usbd_xfer_set_frame_len(xfer, 1, sc->sc_isize);
 310                         usbd_xfer_set_frames(xfer, sc->sc_isize ? 2 : 1);
 311                         usbd_transfer_submit(xfer);
 312                 }
 313                 return;
 314
 315         default:                        /* Error */
 316                 /* bomb out */
 317                 usb_fifo_put_data_error(sc->sc_fifo.fp[USB_FIFO_RX]);
 318                 return;
 319         }
 320 }
 321
 322 static const struct usb_config uhid_config[UHID_N_TRANSFER] = {
 323
 324         [UHID_INTR_DT_RD] = {
 325                 .type = UE_INTERRUPT,
 326                 .endpoint = UE_ADDR_ANY,
 327                 .direction = UE_DIR_IN,
 328                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 329                 .bufsize = UHID_BSIZE,
 330                 .callback = &uhid_intr_callback,
 331         },
 332
 333         [UHID_CTRL_DT_WR] = {
 334                 .type = UE_CONTROL,
 335                 .endpoint = 0x00,       /* Control pipe */
 336                 .direction = UE_DIR_ANY,
 337                 .bufsize = sizeof(struct usb_device_request) + UHID_BSIZE,
 338                 .callback = &uhid_write_callback,
 339                 .timeout = 1000,        /* 1 second */
 340         },
 341
 342         [UHID_CTRL_DT_RD] = {
 343                 .type = UE_CONTROL,
 344                 .endpoint = 0x00,       /* Control pipe */
 345                 .direction = UE_DIR_ANY,
 346                 .bufsize = sizeof(struct usb_device_request) + UHID_BSIZE,
 347                 .callback = &uhid_read_callback,
 348                 .timeout = 1000,        /* 1 second */
 349         },
 350 };
 351
 352 static void
 353 uhid_start_read(struct usb_fifo *fifo)
 354 {
 355         struct uhid_softc *sc = usb_fifo_softc(fifo);
 356
 357         if (sc->sc_flags & UHID_FLAG_IMMED) {
 358                 usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_RD]);
 359         } else {
 360                 usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_RD]);
 361         }
 362 }
 363
 364 static void
 365 uhid_stop_read(struct usb_fifo *fifo)
 366 {
 367         struct uhid_softc *sc = usb_fifo_softc(fifo);
 368
 369         usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_RD]);
 370         usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_RD]);
 371 }
 372
 373 static void
 374 uhid_start_write(struct usb_fifo *fifo)
 375 {
 376         struct uhid_softc *sc = usb_fifo_softc(fifo);
 377
 378         usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_WR]);
 379 }
 380
 381 static void
 382 uhid_stop_write(struct usb_fifo *fifo)
 383 {
 384         struct uhid_softc *sc = usb_fifo_softc(fifo);
 385
 386         usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_WR]);
 387 }
 388
 389 static int
 390 uhid_get_report(struct uhid_softc *sc, uint8_t type,
 391     uint8_t id, void *kern_data, void *user_data,
 392     uint16_t len)
 393 {
 394         int err;
 395         uint8_t free_data = 0;
 396
 397         if (kern_data == NULL) {
 398                 kern_data = kmalloc(len, M_USBDEV, M_WAITOK);
 399                 if (kern_data == NULL) {
 400                         err = ENOMEM;
 401                         goto done;
 402                 }
 403                 free_data = 1;
 404         }
 405         err = usbd_req_get_report(sc->sc_udev, NULL, kern_data,
 406             len, sc->sc_iface_index, type, id);
 407         if (err) {
 408                 err = ENXIO;
 409                 goto done;
 410         }
 411         if (user_data) {
 412                 /* dummy buffer */
 413                 err = copyout(kern_data, user_data, len);
 414                 if (err) {
 415                         goto done;
 416                 }
 417         }
 418 done:
 419         if (free_data) {
 420                 kfree(kern_data, M_USBDEV);
 421         }
 422         return (err);
 423 }
 424
 425 static int
 426 uhid_set_report(struct uhid_softc *sc, uint8_t type,
 427     uint8_t id, void *kern_data, void *user_data,
 428     uint16_t len)
 429 {
 430         int err;
 431         uint8_t free_data = 0;
 432
 433         if (kern_data == NULL) {
 434                 kern_data = kmalloc(len, M_USBDEV, M_WAITOK);
 435                 if (kern_data == NULL) {
 436                         err = ENOMEM;
 437                         goto done;
 438                 }
 439                 free_data = 1;
 440                 err = copyin(user_data, kern_data, len);
 441                 if (err) {
 442                         goto done;
 443                 }
 444         }
 445         err = usbd_req_set_report(sc->sc_udev, NULL, kern_data,
 446             len, sc->sc_iface_index, type, id);
 447         if (err) {
 448                 err = ENXIO;
 449                 goto done;
 450         }
 451 done:
 452         if (free_data) {
 453                 kfree(kern_data, M_USBDEV);
 454         }
 455         return (err);
 456 }
 457
 458 static int
 459 uhid_open(struct usb_fifo *fifo, int fflags)
 460 {
 461         struct uhid_softc *sc = usb_fifo_softc(fifo);
 462
 463         /*
 464          * The buffers are one byte larger than maximum so that one
 465          * can detect too large read/writes and short transfers:
 466          */
 467         if (fflags & FREAD) {
 468                 /* reset flags */
 469                 sc->sc_flags &= ~UHID_FLAG_IMMED;
 470
 471                 if (usb_fifo_alloc_buffer(fifo,
 472                     sc->sc_isize + 1, UHID_FRAME_NUM)) {
 473                         return (ENOMEM);
 474                 }
 475         }
 476         if (fflags & FWRITE) {
 477                 if (usb_fifo_alloc_buffer(fifo,
 478                     sc->sc_osize + 1, UHID_FRAME_NUM)) {
 479                         return (ENOMEM);
 480                 }
 481         }
 482         return (0);
 483 }
 484
 485 static void
 486 uhid_close(struct usb_fifo *fifo, int fflags)
 487 {
 488         if (fflags & (FREAD | FWRITE)) {
 489                 usb_fifo_free_buffer(fifo);
 490         }
 491 }
 492
 493 static int
 494 uhid_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr,
 495     int fflags)
 496 {
 497         struct uhid_softc *sc = usb_fifo_softc(fifo);
 498         struct usb_gen_descriptor *ugd;
 499         uint32_t size;
 500         int error = 0;
 501         uint8_t id;
 502
 503         switch (cmd) {
 504         case USB_GET_REPORT_DESC:
 505                 ugd = addr;
 506                 if (sc->sc_repdesc_size > ugd->ugd_maxlen) {
 507                         size = ugd->ugd_maxlen;
 508                 } else {
 509                         size = sc->sc_repdesc_size;
 510                 }
 511                 ugd->ugd_actlen = size;
 512                 if (ugd->ugd_data == NULL)
 513                         break;          /* descriptor length only */
 514                 error = copyout(sc->sc_repdesc_ptr, ugd->ugd_data, size);
 515                 break;
 516
 517         case USB_SET_IMMED:
 518                 if (!(fflags & FREAD)) {
 519                         error = EPERM;
 520                         break;
 521                 }
 522                 if (*(int *)addr) {
 523
 524                         /* do a test read */
 525
 526                         error = uhid_get_report(sc, UHID_INPUT_REPORT,
 527                             sc->sc_iid, NULL, NULL, sc->sc_isize);
 528                         if (error) {
 529                                 break;
 530                         }
 531                         lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
 532                         sc->sc_flags |= UHID_FLAG_IMMED;
 533                         lockmgr(&sc->sc_lock, LK_RELEASE);
 534                 } else {
 535                         lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
 536                         sc->sc_flags &= ~UHID_FLAG_IMMED;
 537                         lockmgr(&sc->sc_lock, LK_RELEASE);
 538                 }
 539                 break;
 540
 541         case USB_GET_REPORT:
 542                 if (!(fflags & FREAD)) {
 543                         error = EPERM;
 544                         break;
 545                 }
 546                 ugd = addr;
 547                 switch (ugd->ugd_report_type) {
 548                 case UHID_INPUT_REPORT:
 549                         size = sc->sc_isize;
 550                         id = sc->sc_iid;
 551                         break;
 552                 case UHID_OUTPUT_REPORT:
 553                         size = sc->sc_osize;
 554                         id = sc->sc_oid;
 555                         break;
 556                 case UHID_FEATURE_REPORT:
 557                         size = sc->sc_fsize;
 558                         id = sc->sc_fid;
 559                         break;
 560                 default:
 561                         return (EINVAL);
 562                 }
 563                 if (id != 0)
 564                         copyin(ugd->ugd_data, &id, 1);
 565                 error = uhid_get_report(sc, ugd->ugd_report_type, id,
 566                     NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size));
 567                 break;
 568
 569         case USB_SET_REPORT:
 570                 if (!(fflags & FWRITE)) {
 571                         error = EPERM;
 572                         break;
 573                 }
 574                 ugd = addr;
 575                 switch (ugd->ugd_report_type) {
 576                 case UHID_INPUT_REPORT:
 577                         size = sc->sc_isize;
 578                         id = sc->sc_iid;
 579                         break;
 580                 case UHID_OUTPUT_REPORT:
 581                         size = sc->sc_osize;
 582                         id = sc->sc_oid;
 583                         break;
 584                 case UHID_FEATURE_REPORT:
 585                         size = sc->sc_fsize;
 586                         id = sc->sc_fid;
 587                         break;
 588                 default:
 589                         return (EINVAL);
 590                 }
 591                 if (id != 0)
 592                         copyin(ugd->ugd_data, &id, 1);
 593                 error = uhid_set_report(sc, ugd->ugd_report_type, id,
 594                     NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size));
 595                 break;
 596
 597         case USB_GET_REPORT_ID:
 598                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 599                 break;
 600
 601         default:
 602                 error = EINVAL;
 603                 break;
 604         }
 605         return (error);
 606 }
 607
 608 static const STRUCT_USB_HOST_ID uhid_devs[] = {
 609         /* generic HID class */
 610         {USB_IFACE_CLASS(UICLASS_HID),},
 611         /* the Xbox 360 gamepad doesn't use the HID class */
 612         {USB_IFACE_CLASS(UICLASS_VENDOR),
 613          USB_IFACE_SUBCLASS(UISUBCLASS_XBOX360_CONTROLLER),
 614          USB_IFACE_PROTOCOL(UIPROTO_XBOX360_GAMEPAD),},
 615 };
 616
 617 static int
 618 uhid_probe(device_t dev)
 619 {
 620         struct usb_attach_arg *uaa = device_get_ivars(dev);
 621         int error;
 622
 623         DPRINTFN(11, "\n");
 624
 625         if (uaa->usb_mode != USB_MODE_HOST)
 626                 return (ENXIO);
 627
 628         error = usbd_lookup_id_by_uaa(uhid_devs, sizeof(uhid_devs), uaa);
 629         if (error)
 630                 return (error);
 631
 632         if (usb_test_quirk(uaa, UQ_HID_IGNORE))
 633                 return (ENXIO);
 634
 635         /*
 636          * Don't attach to mouse and keyboard devices, hence then no
 637          * "nomatch" event is generated and then ums and ukbd won't
 638          * attach properly when loaded.
 639          */
 640         if ((uaa->info.bInterfaceClass == UICLASS_HID) &&
 641             (uaa->info.bInterfaceSubClass == UISUBCLASS_BOOT) &&
 642             ((uaa->info.bInterfaceProtocol == UIPROTO_BOOT_KEYBOARD) ||
 643              (uaa->info.bInterfaceProtocol == UIPROTO_MOUSE))) {
 644                 return (ENXIO);
 645         }
 646
 647         return (BUS_PROBE_GENERIC);
 648 }
 649
 650 static int
 651 uhid_attach(device_t dev)
 652 {
 653         struct usb_attach_arg *uaa = device_get_ivars(dev);
 654         struct uhid_softc *sc = device_get_softc(dev);
 655         int unit = device_get_unit(dev);
 656         int error = 0;
 657
 658         DPRINTFN(10, "sc=%p\n", sc);
 659
 660         device_set_usb_desc(dev);
 661
 662         lockinit(&sc->sc_lock, "uhid lock", 0, LK_CANRECURSE);
 663
 664         sc->sc_udev = uaa->device;
 665
 666         sc->sc_iface_no = uaa->info.bIfaceNum;
 667         sc->sc_iface_index = uaa->info.bIfaceIndex;
 668
 669         error = usbd_transfer_setup(uaa->device,
 670             &uaa->info.bIfaceIndex, sc->sc_xfer, uhid_config,
 671             UHID_N_TRANSFER, sc, &sc->sc_lock);
 672
 673         if (error) {
 674                 DPRINTF("error=%s\n", usbd_errstr(error));
 675                 goto detach;
 676         }
 677         if (uaa->info.idVendor == USB_VENDOR_WACOM) {
 678
 679                 /* the report descriptor for the Wacom Graphire is broken */
 680
 681                 if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE) {
 682
 683                         sc->sc_repdesc_size = sizeof(uhid_graphire_report_descr);
 684                         sc->sc_repdesc_ptr = (void *)&uhid_graphire_report_descr;
 685                         sc->sc_flags |= UHID_FLAG_STATIC_DESC;
 686
 687                 } else if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) {
 688
 689                         static uint8_t reportbuf[] = {2, 2, 2};
 690
 691                         /*
 692                          * The Graphire3 needs 0x0202 to be written to
 693                          * feature report ID 2 before it'll start
 694                          * returning digitizer data.
 695                          */
 696                         error = usbd_req_set_report(uaa->device, NULL,
 697                             reportbuf, sizeof(reportbuf),
 698                             uaa->info.bIfaceIndex, UHID_FEATURE_REPORT, 2);
 699
 700                         if (error) {
 701                                 DPRINTF("set report failed, error=%s (ignored)\n",
 702                                     usbd_errstr(error));
 703                         }
 704                         sc->sc_repdesc_size = sizeof(uhid_graphire3_4x5_report_descr);
 705                         sc->sc_repdesc_ptr = (void *)&uhid_graphire3_4x5_report_descr;
 706                         sc->sc_flags |= UHID_FLAG_STATIC_DESC;
 707                 }
 708         } else if ((uaa->info.bInterfaceClass == UICLASS_VENDOR) &&
 709                     (uaa->info.bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER) &&
 710             (uaa->info.bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD)) {
 711
 712                 /* the Xbox 360 gamepad has no report descriptor */
 713                 sc->sc_repdesc_size = sizeof(uhid_xb360gp_report_descr);
 714                 sc->sc_repdesc_ptr = (void *)&uhid_xb360gp_report_descr;
 715                 sc->sc_flags |= UHID_FLAG_STATIC_DESC;
 716         }
 717         if (sc->sc_repdesc_ptr == NULL) {
 718
 719                 error = usbd_req_get_hid_desc(uaa->device, NULL,
 720                     &sc->sc_repdesc_ptr, &sc->sc_repdesc_size,
 721                     M_USBDEV, uaa->info.bIfaceIndex);
 722
 723                 if (error) {
 724                         device_printf(dev, "no report descriptor\n");
 725                         goto detach;
 726                 }
 727         }
 728         error = usbd_req_set_idle(uaa->device, NULL,
 729             uaa->info.bIfaceIndex, 0, 0);
 730
 731         if (error) {
 732                 DPRINTF("set idle failed, error=%s (ignored)\n",
 733                     usbd_errstr(error));
 734         }
 735         sc->sc_isize = hid_report_size
 736             (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_input, &sc->sc_iid);
 737
 738         sc->sc_osize = hid_report_size
 739             (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_output, &sc->sc_oid);
 740
 741         sc->sc_fsize = hid_report_size
 742             (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_feature, &sc->sc_fid);
 743
 744         if (sc->sc_isize > UHID_BSIZE) {
 745                 DPRINTF("input size is too large, "
 746                     "%d bytes (truncating)\n",
 747                     sc->sc_isize);
 748                 sc->sc_isize = UHID_BSIZE;
 749         }
 750         if (sc->sc_osize > UHID_BSIZE) {
 751                 DPRINTF("output size is too large, "
 752                     "%d bytes (truncating)\n",
 753                     sc->sc_osize);
 754                 sc->sc_osize = UHID_BSIZE;
 755         }
 756         if (sc->sc_fsize > UHID_BSIZE) {
 757                 DPRINTF("feature size is too large, "
 758                     "%d bytes (truncating)\n",
 759                     sc->sc_fsize);
 760                 sc->sc_fsize = UHID_BSIZE;
 761         }
 762
 763         error = usb_fifo_attach(uaa->device, sc, &sc->sc_lock,
 764             &uhid_fifo_methods, &sc->sc_fifo,
 765             unit, 0 - 1, uaa->info.bIfaceIndex,
 766             UID_ROOT, GID_OPERATOR, 0644);
 767         if (error) {
 768                 goto detach;
 769         }
 770         return (0);                     /* success */
 771
 772 detach:
 773         uhid_detach(dev);
 774         return (ENOMEM);
 775 }
 776
 777 static int
 778 uhid_detach(device_t dev)
 779 {
 780         struct uhid_softc *sc = device_get_softc(dev);
 781
 782         usb_fifo_detach(&sc->sc_fifo);
 783
 784         usbd_transfer_unsetup(sc->sc_xfer, UHID_N_TRANSFER);
 785
 786         if (sc->sc_repdesc_ptr) {
 787                 if (!(sc->sc_flags & UHID_FLAG_STATIC_DESC)) {
 788                         kfree(sc->sc_repdesc_ptr, M_USBDEV);
 789                 }
 790         }
 791         lockuninit(&sc->sc_lock);
 792
 793         return (0);
 794 }
 795
 796 static devclass_t uhid_devclass;
 797
 798 static device_method_t uhid_methods[] = {
 799         DEVMETHOD(device_probe, uhid_probe),
 800         DEVMETHOD(device_attach, uhid_attach),
 801         DEVMETHOD(device_detach, uhid_detach),
 802         {0, 0}
 803 };
 804
 805 static driver_t uhid_driver = {
 806         .name = "uhid",
 807         .methods = uhid_methods,
 808         .size = sizeof(struct uhid_softc),
 809 };
 810
 811 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, NULL, 0);
 812 MODULE_DEPEND(uhid, usb, 1, 1, 1);
 813 MODULE_VERSION(uhid, 1);