sys/dev/usb/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 #include <sys/cdefs.h>
   8 __FBSDID("$FreeBSD$");
   9
  10 /*-
  11  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
  12  *
  13  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  14  * All rights reserved.
  15  *
  16  * This code is derived from software contributed to The NetBSD Foundation
  17  * by Lennart Augustsson (lennart@augustsson.net) at
  18  * Carlstedt Research & Technology.
  19  *
  20  * Redistribution and use in source and binary forms, with or without
  21  * modification, are permitted provided that the following conditions
  22  * are met:
  23  * 1. Redistributions of source code must retain the above copyright
  24  *    notice, this list of conditions and the following disclaimer.
  25  * 2. Redistributions in binary form must reproduce the above copyright
  26  *    notice, this list of conditions and the following disclaimer in the
  27  *    documentation and/or other materials provided with the distribution.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  30  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  31  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  32  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  33  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  36  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  37  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39  * POSSIBILITY OF SUCH DAMAGE.
  40  */
  41
  42 /*
  43  * HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf
  44  */
  45
  46 #include <sys/stdint.h>
  47 #include <sys/stddef.h>
  48 #include <sys/param.h>
  49 #include <sys/queue.h>
  50 #include <sys/types.h>
  51 #include <sys/systm.h>
  52 #include <sys/kernel.h>
  53 #include <sys/bus.h>
  54 #include <sys/module.h>
  55 #include <sys/lock.h>
  56 #include <sys/mutex.h>
  57 #include <sys/condvar.h>
  58 #include <sys/sysctl.h>
  59 #include <sys/sx.h>
  60 #include <sys/unistd.h>
  61 #include <sys/callout.h>
  62 #include <sys/malloc.h>
  63 #include <sys/priv.h>
  64 #include <sys/conf.h>
  65 #include <sys/fcntl.h>
  66
  67 #include "usbdevs.h"
  68 #include <dev/usb/usb.h>
  69 #include <dev/usb/usbdi.h>
  70 #include <dev/usb/usbdi_util.h>
  71 #include <dev/usb/usbhid.h>
  72 #include <dev/usb/usb_ioctl.h>
  73
  74 #define USB_DEBUG_VAR uhid_debug
  75 #include <dev/usb/usb_debug.h>
  76
  77 #include <dev/usb/input/usb_rdesc.h>
  78 #include <dev/usb/quirk/usb_quirk.h>
  79
  80 #ifdef USB_DEBUG
  81 static int uhid_debug = 0;
  82
  83 static SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
  84     "USB uhid");
  85 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RWTUN,
  86     &uhid_debug, 0, "Debug level");
  87 #endif
  88
  89 #define UHID_BSIZE      1024            /* bytes, buffer size */
  90 #define UHID_FRAME_NUM    50            /* bytes, frame number */
  91
  92 enum {
  93         UHID_INTR_DT_WR,
  94         UHID_INTR_DT_RD,
  95         UHID_CTRL_DT_WR,
  96         UHID_CTRL_DT_RD,
  97         UHID_N_TRANSFER,
  98 };
  99
 100 struct uhid_softc {
 101         struct usb_fifo_sc sc_fifo;
 102         struct mtx sc_mtx;
 103
 104         struct usb_xfer *sc_xfer[UHID_N_TRANSFER];
 105         struct usb_device *sc_udev;
 106         void   *sc_repdesc_ptr;
 107
 108         uint32_t sc_isize;
 109         uint32_t sc_osize;
 110         uint32_t sc_fsize;
 111
 112         uint16_t sc_repdesc_size;
 113
 114         uint8_t sc_iface_no;
 115         uint8_t sc_iface_index;
 116         uint8_t sc_iid;
 117         uint8_t sc_oid;
 118         uint8_t sc_fid;
 119         uint8_t sc_flags;
 120 #define UHID_FLAG_IMMED        0x01     /* set if read should be immediate */
 121 #define UHID_FLAG_STATIC_DESC  0x04     /* set if report descriptors are
 122                                          * static */
 123 };
 124
 125 static const uint8_t uhid_xb360gp_report_descr[] = {UHID_XB360GP_REPORT_DESCR()};
 126 static const uint8_t uhid_graphire_report_descr[] = {UHID_GRAPHIRE_REPORT_DESCR()};
 127 static const uint8_t uhid_graphire3_4x5_report_descr[] = {UHID_GRAPHIRE3_4X5_REPORT_DESCR()};
 128
 129 /* prototypes */
 130
 131 static device_probe_t uhid_probe;
 132 static device_attach_t uhid_attach;
 133 static device_detach_t uhid_detach;
 134
 135 static usb_callback_t uhid_intr_write_callback;
 136 static usb_callback_t uhid_intr_read_callback;
 137 static usb_callback_t uhid_write_callback;
 138 static usb_callback_t uhid_read_callback;
 139
 140 static usb_fifo_cmd_t uhid_start_read;
 141 static usb_fifo_cmd_t uhid_stop_read;
 142 static usb_fifo_cmd_t uhid_start_write;
 143 static usb_fifo_cmd_t uhid_stop_write;
 144 static usb_fifo_open_t uhid_open;
 145 static usb_fifo_close_t uhid_close;
 146 static usb_fifo_ioctl_t uhid_ioctl;
 147
 148 static struct usb_fifo_methods uhid_fifo_methods = {
 149         .f_open = &uhid_open,
 150         .f_close = &uhid_close,
 151         .f_ioctl = &uhid_ioctl,
 152         .f_start_read = &uhid_start_read,
 153         .f_stop_read = &uhid_stop_read,
 154         .f_start_write = &uhid_start_write,
 155         .f_stop_write = &uhid_stop_write,
 156         .basename[0] = "uhid",
 157 };
 158
 159 static void
 160 uhid_intr_write_callback(struct usb_xfer *xfer, usb_error_t error)
 161 {
 162         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 163         struct usb_page_cache *pc;
 164         int actlen;
 165
 166         switch (USB_GET_STATE(xfer)) {
 167         case USB_ST_TRANSFERRED:
 168         case USB_ST_SETUP:
 169 tr_setup:
 170                 pc = usbd_xfer_get_frame(xfer, 0);
 171                 if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
 172                     0, usbd_xfer_max_len(xfer), &actlen, 0)) {
 173                         usbd_xfer_set_frame_len(xfer, 0, actlen);
 174                         usbd_transfer_submit(xfer);
 175                 }
 176                 return;
 177
 178         default:                        /* Error */
 179                 if (error != USB_ERR_CANCELLED) {
 180                         /* try to clear stall first */
 181                         usbd_xfer_set_stall(xfer);
 182                         goto tr_setup;
 183                 }
 184                 return;
 185         }
 186 }
 187
 188 static void
 189 uhid_intr_read_callback(struct usb_xfer *xfer, usb_error_t error)
 190 {
 191         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 192         struct usb_page_cache *pc;
 193         int actlen;
 194
 195         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 196
 197         switch (USB_GET_STATE(xfer)) {
 198         case USB_ST_TRANSFERRED:
 199                 DPRINTF("transferred!\n");
 200
 201                 pc = usbd_xfer_get_frame(xfer, 0);
 202
 203                 /*
 204                  * If the ID byte is non zero we allow descriptors
 205                  * having multiple sizes:
 206                  */
 207                 if ((actlen >= (int)sc->sc_isize) ||
 208                     ((actlen > 0) && (sc->sc_iid != 0))) {
 209                         /* limit report length to the maximum */
 210                         if (actlen > (int)sc->sc_isize)
 211                                 actlen = sc->sc_isize;
 212                         usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc,
 213                             0, actlen, 1);
 214                 } else {
 215                         /* ignore it */
 216                         DPRINTF("ignored transfer, %d bytes\n", actlen);
 217                 }
 218
 219         case USB_ST_SETUP:
 220 re_submit:
 221                 if (usb_fifo_put_bytes_max(
 222                     sc->sc_fifo.fp[USB_FIFO_RX]) != 0) {
 223                         usbd_xfer_set_frame_len(xfer, 0, sc->sc_isize);
 224                         usbd_transfer_submit(xfer);
 225                 }
 226                 return;
 227
 228         default:                        /* Error */
 229                 if (error != USB_ERR_CANCELLED) {
 230                         /* try to clear stall first */
 231                         usbd_xfer_set_stall(xfer);
 232                         goto re_submit;
 233                 }
 234                 return;
 235         }
 236 }
 237
 238 static void
 239 uhid_fill_set_report(struct usb_device_request *req, uint8_t iface_no,
 240     uint8_t type, uint8_t id, uint16_t size)
 241 {
 242         req->bmRequestType = UT_WRITE_CLASS_INTERFACE;
 243         req->bRequest = UR_SET_REPORT;
 244         USETW2(req->wValue, type, id);
 245         req->wIndex[0] = iface_no;
 246         req->wIndex[1] = 0;
 247         USETW(req->wLength, size);
 248 }
 249
 250 static void
 251 uhid_fill_get_report(struct usb_device_request *req, uint8_t iface_no,
 252     uint8_t type, uint8_t id, uint16_t size)
 253 {
 254         req->bmRequestType = UT_READ_CLASS_INTERFACE;
 255         req->bRequest = UR_GET_REPORT;
 256         USETW2(req->wValue, type, id);
 257         req->wIndex[0] = iface_no;
 258         req->wIndex[1] = 0;
 259         USETW(req->wLength, size);
 260 }
 261
 262 static void
 263 uhid_write_callback(struct usb_xfer *xfer, usb_error_t error)
 264 {
 265         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 266         struct usb_device_request req;
 267         struct usb_page_cache *pc;
 268         uint32_t size = sc->sc_osize;
 269         uint32_t actlen;
 270         uint8_t id;
 271
 272         switch (USB_GET_STATE(xfer)) {
 273         case USB_ST_TRANSFERRED:
 274         case USB_ST_SETUP:
 275                 /* try to extract the ID byte */
 276                 if (sc->sc_oid) {
 277                         pc = usbd_xfer_get_frame(xfer, 0);
 278                         if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
 279                             0, 1, &actlen, 0)) {
 280                                 if (actlen != 1) {
 281                                         goto tr_error;
 282                                 }
 283                                 usbd_copy_out(pc, 0, &id, 1);
 284
 285                         } else {
 286                                 return;
 287                         }
 288                         if (size) {
 289                                 size--;
 290                         }
 291                 } else {
 292                         id = 0;
 293                 }
 294
 295                 pc = usbd_xfer_get_frame(xfer, 1);
 296                 if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
 297                     0, UHID_BSIZE, &actlen, 1)) {
 298                         if (actlen != size) {
 299                                 goto tr_error;
 300                         }
 301                         uhid_fill_set_report
 302                             (&req, sc->sc_iface_no,
 303                             UHID_OUTPUT_REPORT, id, size);
 304
 305                         pc = usbd_xfer_get_frame(xfer, 0);
 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, size);
 310                         usbd_xfer_set_frames(xfer, size ? 2 : 1);
 311                         usbd_transfer_submit(xfer);
 312                 }
 313                 return;
 314
 315         default:
 316 tr_error:
 317                 /* bomb out */
 318                 usb_fifo_get_data_error(sc->sc_fifo.fp[USB_FIFO_TX]);
 319                 return;
 320         }
 321 }
 322
 323 static void
 324 uhid_read_callback(struct usb_xfer *xfer, usb_error_t error)
 325 {
 326         struct uhid_softc *sc = usbd_xfer_softc(xfer);
 327         struct usb_device_request req;
 328         struct usb_page_cache *pc;
 329
 330         pc = usbd_xfer_get_frame(xfer, 0);
 331
 332         switch (USB_GET_STATE(xfer)) {
 333         case USB_ST_TRANSFERRED:
 334                 usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, sizeof(req),
 335                     sc->sc_isize, 1);
 336                 return;
 337
 338         case USB_ST_SETUP:
 339
 340                 if (usb_fifo_put_bytes_max(sc->sc_fifo.fp[USB_FIFO_RX]) > 0) {
 341                         uhid_fill_get_report
 342                             (&req, sc->sc_iface_no, UHID_INPUT_REPORT,
 343                             sc->sc_iid, sc->sc_isize);
 344
 345                         usbd_copy_in(pc, 0, &req, sizeof(req));
 346
 347                         usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
 348                         usbd_xfer_set_frame_len(xfer, 1, sc->sc_isize);
 349                         usbd_xfer_set_frames(xfer, sc->sc_isize ? 2 : 1);
 350                         usbd_transfer_submit(xfer);
 351                 }
 352                 return;
 353
 354         default:                        /* Error */
 355                 /* bomb out */
 356                 usb_fifo_put_data_error(sc->sc_fifo.fp[USB_FIFO_RX]);
 357                 return;
 358         }
 359 }
 360
 361 static const struct usb_config uhid_config[UHID_N_TRANSFER] = {
 362         [UHID_INTR_DT_WR] = {
 363                 .type = UE_INTERRUPT,
 364                 .endpoint = UE_ADDR_ANY,
 365                 .direction = UE_DIR_OUT,
 366                 .flags = {.pipe_bof = 1,.no_pipe_ok = 1, },
 367                 .bufsize = UHID_BSIZE,
 368                 .callback = &uhid_intr_write_callback,
 369         },
 370
 371         [UHID_INTR_DT_RD] = {
 372                 .type = UE_INTERRUPT,
 373                 .endpoint = UE_ADDR_ANY,
 374                 .direction = UE_DIR_IN,
 375                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 376                 .bufsize = UHID_BSIZE,
 377                 .callback = &uhid_intr_read_callback,
 378         },
 379
 380         [UHID_CTRL_DT_WR] = {
 381                 .type = UE_CONTROL,
 382                 .endpoint = 0x00,       /* Control pipe */
 383                 .direction = UE_DIR_ANY,
 384                 .bufsize = sizeof(struct usb_device_request) + UHID_BSIZE,
 385                 .callback = &uhid_write_callback,
 386                 .timeout = 1000,        /* 1 second */
 387         },
 388
 389         [UHID_CTRL_DT_RD] = {
 390                 .type = UE_CONTROL,
 391                 .endpoint = 0x00,       /* Control pipe */
 392                 .direction = UE_DIR_ANY,
 393                 .bufsize = sizeof(struct usb_device_request) + UHID_BSIZE,
 394                 .callback = &uhid_read_callback,
 395                 .timeout = 1000,        /* 1 second */
 396         },
 397 };
 398
 399 static void
 400 uhid_start_read(struct usb_fifo *fifo)
 401 {
 402         struct uhid_softc *sc = usb_fifo_softc(fifo);
 403
 404         if (sc->sc_flags & UHID_FLAG_IMMED) {
 405                 usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_RD]);
 406         } else {
 407                 usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_RD]);
 408         }
 409 }
 410
 411 static void
 412 uhid_stop_read(struct usb_fifo *fifo)
 413 {
 414         struct uhid_softc *sc = usb_fifo_softc(fifo);
 415
 416         usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_RD]);
 417         usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_RD]);
 418 }
 419
 420 static void
 421 uhid_start_write(struct usb_fifo *fifo)
 422 {
 423         struct uhid_softc *sc = usb_fifo_softc(fifo);
 424
 425         if ((sc->sc_flags & UHID_FLAG_IMMED) ||
 426             sc->sc_xfer[UHID_INTR_DT_WR] == NULL) {
 427                 usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_WR]);
 428         } else {
 429                 usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_WR]);
 430         }
 431 }
 432
 433 static void
 434 uhid_stop_write(struct usb_fifo *fifo)
 435 {
 436         struct uhid_softc *sc = usb_fifo_softc(fifo);
 437
 438         usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_WR]);
 439         usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_WR]);
 440 }
 441
 442 static int
 443 uhid_get_report(struct uhid_softc *sc, uint8_t type,
 444     uint8_t id, void *kern_data, void *user_data,
 445     uint16_t len)
 446 {
 447         int err;
 448         uint8_t free_data = 0;
 449
 450         if (kern_data == NULL) {
 451                 kern_data = malloc(len, M_USBDEV, M_WAITOK);
 452                 free_data = 1;
 453         }
 454         err = usbd_req_get_report(sc->sc_udev, NULL, kern_data,
 455             len, sc->sc_iface_index, type, id);
 456         if (err) {
 457                 err = ENXIO;
 458                 goto done;
 459         }
 460         if (user_data) {
 461                 /* dummy buffer */
 462                 err = copyout(kern_data, user_data, len);
 463                 if (err) {
 464                         goto done;
 465                 }
 466         }
 467 done:
 468         if (free_data) {
 469                 free(kern_data, M_USBDEV);
 470         }
 471         return (err);
 472 }
 473
 474 static int
 475 uhid_set_report(struct uhid_softc *sc, uint8_t type,
 476     uint8_t id, void *kern_data, void *user_data,
 477     uint16_t len)
 478 {
 479         int err;
 480         uint8_t free_data = 0;
 481
 482         if (kern_data == NULL) {
 483                 kern_data = malloc(len, M_USBDEV, M_WAITOK);
 484                 free_data = 1;
 485                 err = copyin(user_data, kern_data, len);
 486                 if (err) {
 487                         goto done;
 488                 }
 489         }
 490         err = usbd_req_set_report(sc->sc_udev, NULL, kern_data,
 491             len, sc->sc_iface_index, type, id);
 492         if (err) {
 493                 err = ENXIO;
 494                 goto done;
 495         }
 496 done:
 497         if (free_data) {
 498                 free(kern_data, M_USBDEV);
 499         }
 500         return (err);
 501 }
 502
 503 static int
 504 uhid_open(struct usb_fifo *fifo, int fflags)
 505 {
 506         struct uhid_softc *sc = usb_fifo_softc(fifo);
 507
 508         /*
 509          * The buffers are one byte larger than maximum so that one
 510          * can detect too large read/writes and short transfers:
 511          */
 512         if (fflags & FREAD) {
 513                 /* reset flags */
 514                 mtx_lock(&sc->sc_mtx);
 515                 sc->sc_flags &= ~UHID_FLAG_IMMED;
 516                 mtx_unlock(&sc->sc_mtx);
 517
 518                 if (usb_fifo_alloc_buffer(fifo,
 519                     sc->sc_isize + 1, UHID_FRAME_NUM)) {
 520                         return (ENOMEM);
 521                 }
 522         }
 523         if (fflags & FWRITE) {
 524                 if (usb_fifo_alloc_buffer(fifo,
 525                     sc->sc_osize + 1, UHID_FRAME_NUM)) {
 526                         return (ENOMEM);
 527                 }
 528         }
 529         return (0);
 530 }
 531
 532 static void
 533 uhid_close(struct usb_fifo *fifo, int fflags)
 534 {
 535         if (fflags & (FREAD | FWRITE)) {
 536                 usb_fifo_free_buffer(fifo);
 537         }
 538 }
 539
 540 static int
 541 uhid_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr,
 542     int fflags)
 543 {
 544         struct uhid_softc *sc = usb_fifo_softc(fifo);
 545         struct usb_gen_descriptor *ugd;
 546         uint32_t size;
 547         int error = 0;
 548         uint8_t id;
 549
 550         switch (cmd) {
 551         case USB_GET_REPORT_DESC:
 552                 ugd = addr;
 553                 if (sc->sc_repdesc_size > ugd->ugd_maxlen) {
 554                         size = ugd->ugd_maxlen;
 555                 } else {
 556                         size = sc->sc_repdesc_size;
 557                 }
 558                 ugd->ugd_actlen = size;
 559                 if (ugd->ugd_data == NULL)
 560                         break;          /* descriptor length only */
 561                 error = copyout(sc->sc_repdesc_ptr, ugd->ugd_data, size);
 562                 break;
 563
 564         case USB_SET_IMMED:
 565                 if (!(fflags & FREAD)) {
 566                         error = EPERM;
 567                         break;
 568                 }
 569                 if (*(int *)addr) {
 570                         /* do a test read */
 571
 572                         error = uhid_get_report(sc, UHID_INPUT_REPORT,
 573                             sc->sc_iid, NULL, NULL, sc->sc_isize);
 574                         if (error) {
 575                                 break;
 576                         }
 577                         mtx_lock(&sc->sc_mtx);
 578                         sc->sc_flags |= UHID_FLAG_IMMED;
 579                         mtx_unlock(&sc->sc_mtx);
 580                 } else {
 581                         mtx_lock(&sc->sc_mtx);
 582                         sc->sc_flags &= ~UHID_FLAG_IMMED;
 583                         mtx_unlock(&sc->sc_mtx);
 584                 }
 585                 break;
 586
 587         case USB_GET_REPORT:
 588                 if (!(fflags & FREAD)) {
 589                         error = EPERM;
 590                         break;
 591                 }
 592                 ugd = addr;
 593                 switch (ugd->ugd_report_type) {
 594                 case UHID_INPUT_REPORT:
 595                         size = sc->sc_isize;
 596                         id = sc->sc_iid;
 597                         break;
 598                 case UHID_OUTPUT_REPORT:
 599                         size = sc->sc_osize;
 600                         id = sc->sc_oid;
 601                         break;
 602                 case UHID_FEATURE_REPORT:
 603                         size = sc->sc_fsize;
 604                         id = sc->sc_fid;
 605                         break;
 606                 default:
 607                         return (EINVAL);
 608                 }
 609                 if (id != 0)
 610                         copyin(ugd->ugd_data, &id, 1);
 611                 error = uhid_get_report(sc, ugd->ugd_report_type, id,
 612                     NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size));
 613                 break;
 614
 615         case USB_SET_REPORT:
 616                 if (!(fflags & FWRITE)) {
 617                         error = EPERM;
 618                         break;
 619                 }
 620                 ugd = addr;
 621                 switch (ugd->ugd_report_type) {
 622                 case UHID_INPUT_REPORT:
 623                         size = sc->sc_isize;
 624                         id = sc->sc_iid;
 625                         break;
 626                 case UHID_OUTPUT_REPORT:
 627                         size = sc->sc_osize;
 628                         id = sc->sc_oid;
 629                         break;
 630                 case UHID_FEATURE_REPORT:
 631                         size = sc->sc_fsize;
 632                         id = sc->sc_fid;
 633                         break;
 634                 default:
 635                         return (EINVAL);
 636                 }
 637                 if (id != 0)
 638                         copyin(ugd->ugd_data, &id, 1);
 639                 error = uhid_set_report(sc, ugd->ugd_report_type, id,
 640                     NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size));
 641                 break;
 642
 643         case USB_GET_REPORT_ID:
 644                 *(int *)addr = 0;       /* XXX: we only support reportid 0? */
 645                 break;
 646
 647         default:
 648                 error = EINVAL;
 649                 break;
 650         }
 651         return (error);
 652 }
 653
 654 static const STRUCT_USB_HOST_ID uhid_devs[] = {
 655         /* generic HID class */
 656         {USB_IFACE_CLASS(UICLASS_HID),},
 657         /* the Xbox 360 gamepad doesn't use the HID class */
 658         {USB_IFACE_CLASS(UICLASS_VENDOR),
 659          USB_IFACE_SUBCLASS(UISUBCLASS_XBOX360_CONTROLLER),
 660          USB_IFACE_PROTOCOL(UIPROTO_XBOX360_GAMEPAD),},
 661 };
 662
 663 static int
 664 uhid_probe(device_t dev)
 665 {
 666         struct usb_attach_arg *uaa = device_get_ivars(dev);
 667         int error;
 668         void *buf;
 669         uint16_t len;
 670
 671         DPRINTFN(11, "\n");
 672
 673         if (uaa->usb_mode != USB_MODE_HOST)
 674                 return (ENXIO);
 675
 676         error = usbd_lookup_id_by_uaa(uhid_devs, sizeof(uhid_devs), uaa);
 677         if (error)
 678                 return (error);
 679
 680         if (usb_test_quirk(uaa, UQ_HID_IGNORE))
 681                 return (ENXIO);
 682
 683         /*
 684          * Don't attach to mouse and keyboard devices, hence then no
 685          * "nomatch" event is generated and then ums and ukbd won't
 686          * attach properly when loaded.
 687          */
 688         if ((uaa->info.bInterfaceClass == UICLASS_HID) &&
 689             (uaa->info.bInterfaceSubClass == UISUBCLASS_BOOT) &&
 690             (((uaa->info.bInterfaceProtocol == UIPROTO_BOOT_KEYBOARD) &&
 691               !usb_test_quirk(uaa, UQ_KBD_IGNORE)) ||
 692              ((uaa->info.bInterfaceProtocol == UIPROTO_MOUSE) &&
 693               !usb_test_quirk(uaa, UQ_UMS_IGNORE))))
 694                 return (ENXIO);
 695
 696         /* Check for mandatory multitouch usages to give wmt(4) a chance */
 697         if (!usb_test_quirk(uaa, UQ_WMT_IGNORE)) {
 698                 error = usbd_req_get_hid_desc(uaa->device, NULL,
 699                     &buf, &len, M_USBDEV, uaa->info.bIfaceIndex);
 700                 /* Let HID decscriptor-less devices to be handled at attach */
 701                 if (!error) {
 702                         if (hid_locate(buf, len,
 703                             HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACT_MAX),
 704                             hid_feature, 0, NULL, NULL, NULL) &&
 705                             hid_locate(buf, len,
 706                             HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACTID),
 707                             hid_input, 0, NULL, NULL, NULL)) {
 708                                 free(buf, M_USBDEV);
 709                                 return (ENXIO);
 710                         }
 711                         free(buf, M_USBDEV);
 712                 }
 713         }
 714
 715         return (BUS_PROBE_GENERIC);
 716 }
 717
 718 static int
 719 uhid_attach(device_t dev)
 720 {
 721         struct usb_attach_arg *uaa = device_get_ivars(dev);
 722         struct uhid_softc *sc = device_get_softc(dev);
 723         int unit = device_get_unit(dev);
 724         int error = 0;
 725
 726         DPRINTFN(10, "sc=%p\n", sc);
 727
 728         device_set_usb_desc(dev);
 729
 730         mtx_init(&sc->sc_mtx, "uhid lock", NULL, MTX_DEF | MTX_RECURSE);
 731
 732         sc->sc_udev = uaa->device;
 733
 734         sc->sc_iface_no = uaa->info.bIfaceNum;
 735         sc->sc_iface_index = uaa->info.bIfaceIndex;
 736
 737         error = usbd_transfer_setup(uaa->device,
 738             &uaa->info.bIfaceIndex, sc->sc_xfer, uhid_config,
 739             UHID_N_TRANSFER, sc, &sc->sc_mtx);
 740
 741         if (error) {
 742                 DPRINTF("error=%s\n", usbd_errstr(error));
 743                 goto detach;
 744         }
 745         if (uaa->info.idVendor == USB_VENDOR_WACOM) {
 746                 /* the report descriptor for the Wacom Graphire is broken */
 747
 748                 if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE) {
 749                         sc->sc_repdesc_size = sizeof(uhid_graphire_report_descr);
 750                         sc->sc_repdesc_ptr = __DECONST(void *, &uhid_graphire_report_descr);
 751                         sc->sc_flags |= UHID_FLAG_STATIC_DESC;
 752
 753                 } else if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) {
 754                         static uint8_t reportbuf[] = {2, 2, 2};
 755
 756                         /*
 757                          * The Graphire3 needs 0x0202 to be written to
 758                          * feature report ID 2 before it'll start
 759                          * returning digitizer data.
 760                          */
 761                         error = usbd_req_set_report(uaa->device, NULL,
 762                             reportbuf, sizeof(reportbuf),
 763                             uaa->info.bIfaceIndex, UHID_FEATURE_REPORT, 2);
 764
 765                         if (error) {
 766                                 DPRINTF("set report failed, error=%s (ignored)\n",
 767                                     usbd_errstr(error));
 768                         }
 769                         sc->sc_repdesc_size = sizeof(uhid_graphire3_4x5_report_descr);
 770                         sc->sc_repdesc_ptr = __DECONST(void *, &uhid_graphire3_4x5_report_descr);
 771                         sc->sc_flags |= UHID_FLAG_STATIC_DESC;
 772                 }
 773         } else if ((uaa->info.bInterfaceClass == UICLASS_VENDOR) &&
 774             (uaa->info.bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER) &&
 775             (uaa->info.bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD)) {
 776                 static const uint8_t reportbuf[3] = {1, 3, 0};
 777                 /*
 778                  * Turn off the four LEDs on the gamepad which
 779                  * are blinking by default:
 780                  */
 781                 error = usbd_req_set_report(uaa->device, NULL,
 782                     __DECONST(void *, reportbuf), sizeof(reportbuf),
 783                     uaa->info.bIfaceIndex, UHID_OUTPUT_REPORT, 0);
 784                 if (error) {
 785                         DPRINTF("set output report failed, error=%s (ignored)\n",
 786                             usbd_errstr(error));
 787                 }
 788                 /* the Xbox 360 gamepad has no report descriptor */
 789                 sc->sc_repdesc_size = sizeof(uhid_xb360gp_report_descr);
 790                 sc->sc_repdesc_ptr = __DECONST(void *, &uhid_xb360gp_report_descr);
 791                 sc->sc_flags |= UHID_FLAG_STATIC_DESC;
 792         }
 793         if (sc->sc_repdesc_ptr == NULL) {
 794                 error = usbd_req_get_hid_desc(uaa->device, NULL,
 795                     &sc->sc_repdesc_ptr, &sc->sc_repdesc_size,
 796                     M_USBDEV, uaa->info.bIfaceIndex);
 797
 798                 if (error) {
 799                         device_printf(dev, "no report descriptor\n");
 800                         goto detach;
 801                 }
 802         }
 803         error = usbd_req_set_idle(uaa->device, NULL,
 804             uaa->info.bIfaceIndex, 0, 0);
 805
 806         if (error) {
 807                 DPRINTF("set idle failed, error=%s (ignored)\n",
 808                     usbd_errstr(error));
 809         }
 810         sc->sc_isize = hid_report_size
 811             (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_input, &sc->sc_iid);
 812
 813         sc->sc_osize = hid_report_size
 814             (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_output, &sc->sc_oid);
 815
 816         sc->sc_fsize = hid_report_size
 817             (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_feature, &sc->sc_fid);
 818
 819         if (sc->sc_isize > UHID_BSIZE) {
 820                 DPRINTF("input size is too large, "
 821                     "%d bytes (truncating)\n",
 822                     sc->sc_isize);
 823                 sc->sc_isize = UHID_BSIZE;
 824         }
 825         if (sc->sc_osize > UHID_BSIZE) {
 826                 DPRINTF("output size is too large, "
 827                     "%d bytes (truncating)\n",
 828                     sc->sc_osize);
 829                 sc->sc_osize = UHID_BSIZE;
 830         }
 831         if (sc->sc_fsize > UHID_BSIZE) {
 832                 DPRINTF("feature size is too large, "
 833                     "%d bytes (truncating)\n",
 834                     sc->sc_fsize);
 835                 sc->sc_fsize = UHID_BSIZE;
 836         }
 837
 838         error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx,
 839             &uhid_fifo_methods, &sc->sc_fifo,
 840             unit, -1, uaa->info.bIfaceIndex,
 841             UID_ROOT, GID_OPERATOR, 0644);
 842         if (error) {
 843                 goto detach;
 844         }
 845         return (0);                     /* success */
 846
 847 detach:
 848         uhid_detach(dev);
 849         return (ENOMEM);
 850 }
 851
 852 static int
 853 uhid_detach(device_t dev)
 854 {
 855         struct uhid_softc *sc = device_get_softc(dev);
 856
 857         usb_fifo_detach(&sc->sc_fifo);
 858
 859         usbd_transfer_unsetup(sc->sc_xfer, UHID_N_TRANSFER);
 860
 861         if (sc->sc_repdesc_ptr) {
 862                 if (!(sc->sc_flags & UHID_FLAG_STATIC_DESC)) {
 863                         free(sc->sc_repdesc_ptr, M_USBDEV);
 864                 }
 865         }
 866         mtx_destroy(&sc->sc_mtx);
 867
 868         return (0);
 869 }
 870
 871 static devclass_t uhid_devclass;
 872
 873 static device_method_t uhid_methods[] = {
 874         DEVMETHOD(device_probe, uhid_probe),
 875         DEVMETHOD(device_attach, uhid_attach),
 876         DEVMETHOD(device_detach, uhid_detach),
 877
 878         DEVMETHOD_END
 879 };
 880
 881 static driver_t uhid_driver = {
 882         .name = "uhid",
 883         .methods = uhid_methods,
 884         .size = sizeof(struct uhid_softc),
 885 };
 886
 887 DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, NULL, 0);
 888 MODULE_DEPEND(uhid, usb, 1, 1, 1);
 889 MODULE_VERSION(uhid, 1);
 890 USB_PNP_HOST_INFO(uhid_devs);