Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/usb/input/uhid.c
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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 "opt_hid.h" 47 48 #include <sys/stdint.h> 49 #include <sys/stddef.h> 50 #include <sys/param.h> 51 #include <sys/queue.h> 52 #include <sys/types.h> 53 #include <sys/systm.h> 54 #include <sys/kernel.h> 55 #include <sys/bus.h> 56 #include <sys/module.h> 57 #include <sys/lock.h> 58 #include <sys/mutex.h> 59 #include <sys/condvar.h> 60 #include <sys/sysctl.h> 61 #include <sys/sx.h> 62 #include <sys/unistd.h> 63 #include <sys/callout.h> 64 #include <sys/malloc.h> 65 #include <sys/priv.h> 66 #include <sys/conf.h> 67 #include <sys/fcntl.h> 68 69 #include <dev/hid/hid.h> 70 71 #include "usbdevs.h" 72 #include <dev/usb/usb.h> 73 #include <dev/usb/usbdi.h> 74 #include <dev/usb/usbdi_util.h> 75 #include <dev/usb/usbhid.h> 76 #include <dev/usb/usb_ioctl.h> 77 #include <dev/usb/usb_generic.h> 78 79 #define USB_DEBUG_VAR uhid_debug 80 #include <dev/usb/usb_debug.h> 81 82 #include <dev/usb/input/usb_rdesc.h> 83 #include <dev/usb/quirk/usb_quirk.h> 84 85 #ifdef USB_DEBUG 86 static int uhid_debug = 0; 87 88 static SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 89 "USB uhid"); 90 SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RWTUN, 91 &uhid_debug, 0, "Debug level"); 92 #endif 93 94 #define UHID_BSIZE 1024 /* bytes, buffer size */ 95 #define UHID_FRAME_NUM 50 /* bytes, frame number */ 96 97 enum { 98 UHID_INTR_DT_WR, 99 UHID_INTR_DT_RD, 100 UHID_CTRL_DT_WR, 101 UHID_CTRL_DT_RD, 102 UHID_N_TRANSFER, 103 }; 104 105 struct uhid_softc { 106 struct usb_fifo_sc sc_fifo; 107 struct mtx sc_mtx; 108 109 struct usb_xfer *sc_xfer[UHID_N_TRANSFER]; 110 struct usb_device *sc_udev; 111 void *sc_repdesc_ptr; 112 113 uint32_t sc_isize; 114 uint32_t sc_osize; 115 uint32_t sc_fsize; 116 117 uint16_t sc_repdesc_size; 118 119 uint8_t sc_iface_no; 120 uint8_t sc_iface_index; 121 uint8_t sc_iid; 122 uint8_t sc_oid; 123 uint8_t sc_fid; 124 uint8_t sc_flags; 125 #define UHID_FLAG_IMMED 0x01 /* set if read should be immediate */ 126 #define UHID_FLAG_STATIC_DESC 0x04 /* set if report descriptors are 127 * static */ 128 }; 129 130 static const uint8_t uhid_xb360gp_report_descr[] = {UHID_XB360GP_REPORT_DESCR()}; 131 static const uint8_t uhid_graphire_report_descr[] = {UHID_GRAPHIRE_REPORT_DESCR()}; 132 static const uint8_t uhid_graphire3_4x5_report_descr[] = {UHID_GRAPHIRE3_4X5_REPORT_DESCR()}; 133 134 /* prototypes */ 135 136 static device_probe_t uhid_probe; 137 static device_attach_t uhid_attach; 138 static device_detach_t uhid_detach; 139 140 static usb_callback_t uhid_intr_write_callback; 141 static usb_callback_t uhid_intr_read_callback; 142 static usb_callback_t uhid_write_callback; 143 static usb_callback_t uhid_read_callback; 144 145 static usb_fifo_cmd_t uhid_start_read; 146 static usb_fifo_cmd_t uhid_stop_read; 147 static usb_fifo_cmd_t uhid_start_write; 148 static usb_fifo_cmd_t uhid_stop_write; 149 static usb_fifo_open_t uhid_open; 150 static usb_fifo_close_t uhid_close; 151 static usb_fifo_ioctl_t uhid_ioctl; 152 static usb_fifo_ioctl_t uhid_ioctl_post; 153 154 static struct usb_fifo_methods uhid_fifo_methods = { 155 .f_open = &uhid_open, 156 .f_close = &uhid_close, 157 .f_ioctl = &uhid_ioctl, 158 .f_ioctl_post = &uhid_ioctl_post, 159 .f_start_read = &uhid_start_read, 160 .f_stop_read = &uhid_stop_read, 161 .f_start_write = &uhid_start_write, 162 .f_stop_write = &uhid_stop_write, 163 .basename[0] = "uhid", 164 }; 165 166 static void 167 uhid_intr_write_callback(struct usb_xfer *xfer, usb_error_t error) 168 { 169 struct uhid_softc *sc = usbd_xfer_softc(xfer); 170 struct usb_page_cache *pc; 171 int actlen; 172 173 switch (USB_GET_STATE(xfer)) { 174 case USB_ST_TRANSFERRED: 175 case USB_ST_SETUP: 176 tr_setup: 177 pc = usbd_xfer_get_frame(xfer, 0); 178 if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc, 179 0, usbd_xfer_max_len(xfer), &actlen, 0)) { 180 usbd_xfer_set_frame_len(xfer, 0, actlen); 181 usbd_transfer_submit(xfer); 182 } 183 return; 184 185 default: /* Error */ 186 if (error != USB_ERR_CANCELLED) { 187 /* try to clear stall first */ 188 usbd_xfer_set_stall(xfer); 189 goto tr_setup; 190 } 191 return; 192 } 193 } 194 195 static void 196 uhid_intr_read_callback(struct usb_xfer *xfer, usb_error_t error) 197 { 198 struct uhid_softc *sc = usbd_xfer_softc(xfer); 199 struct usb_page_cache *pc; 200 int actlen; 201 202 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 203 204 switch (USB_GET_STATE(xfer)) { 205 case USB_ST_TRANSFERRED: 206 DPRINTF("transferred!\n"); 207 208 pc = usbd_xfer_get_frame(xfer, 0); 209 210 /* 211 * If the ID byte is non zero we allow descriptors 212 * having multiple sizes: 213 */ 214 if ((actlen >= (int)sc->sc_isize) || 215 ((actlen > 0) && (sc->sc_iid != 0))) { 216 /* limit report length to the maximum */ 217 if (actlen > (int)sc->sc_isize) 218 actlen = sc->sc_isize; 219 usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, 220 0, actlen, 1); 221 222 /* 223 * Do not do read-ahead, because this may lead 224 * to data loss! 225 */ 226 return; 227 } else { 228 /* ignore it */ 229 DPRINTF("ignored transfer, %d bytes\n", actlen); 230 } 231 232 case USB_ST_SETUP: 233 re_submit: 234 if (usb_fifo_put_bytes_max( 235 sc->sc_fifo.fp[USB_FIFO_RX]) != 0) { 236 usbd_xfer_set_frame_len(xfer, 0, sc->sc_isize); 237 usbd_transfer_submit(xfer); 238 } 239 return; 240 241 default: /* Error */ 242 if (error != USB_ERR_CANCELLED) { 243 /* try to clear stall first */ 244 usbd_xfer_set_stall(xfer); 245 goto re_submit; 246 } 247 return; 248 } 249 } 250 251 static void 252 uhid_fill_set_report(struct usb_device_request *req, uint8_t iface_no, 253 uint8_t type, uint8_t id, uint16_t size) 254 { 255 req->bmRequestType = UT_WRITE_CLASS_INTERFACE; 256 req->bRequest = UR_SET_REPORT; 257 USETW2(req->wValue, type, id); 258 req->wIndex[0] = iface_no; 259 req->wIndex[1] = 0; 260 USETW(req->wLength, size); 261 } 262 263 static void 264 uhid_fill_get_report(struct usb_device_request *req, uint8_t iface_no, 265 uint8_t type, uint8_t id, uint16_t size) 266 { 267 req->bmRequestType = UT_READ_CLASS_INTERFACE; 268 req->bRequest = UR_GET_REPORT; 269 USETW2(req->wValue, type, id); 270 req->wIndex[0] = iface_no; 271 req->wIndex[1] = 0; 272 USETW(req->wLength, size); 273 } 274 275 static void 276 uhid_write_callback(struct usb_xfer *xfer, usb_error_t error) 277 { 278 struct uhid_softc *sc = usbd_xfer_softc(xfer); 279 struct usb_device_request req; 280 struct usb_page_cache *pc; 281 uint32_t size = sc->sc_osize; 282 uint32_t actlen; 283 uint8_t id; 284 285 switch (USB_GET_STATE(xfer)) { 286 case USB_ST_TRANSFERRED: 287 case USB_ST_SETUP: 288 /* try to extract the ID byte */ 289 if (sc->sc_oid) { 290 pc = usbd_xfer_get_frame(xfer, 0); 291 if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc, 292 0, 1, &actlen, 0)) { 293 if (actlen != 1) { 294 goto tr_error; 295 } 296 usbd_copy_out(pc, 0, &id, 1); 297 298 } else { 299 return; 300 } 301 if (size) { 302 size--; 303 } 304 } else { 305 id = 0; 306 } 307 308 pc = usbd_xfer_get_frame(xfer, 1); 309 if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc, 310 0, UHID_BSIZE, &actlen, 1)) { 311 if (actlen != size) { 312 goto tr_error; 313 } 314 uhid_fill_set_report 315 (&req, sc->sc_iface_no, 316 UHID_OUTPUT_REPORT, id, size); 317 318 pc = usbd_xfer_get_frame(xfer, 0); 319 usbd_copy_in(pc, 0, &req, sizeof(req)); 320 321 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 322 usbd_xfer_set_frame_len(xfer, 1, size); 323 usbd_xfer_set_frames(xfer, size ? 2 : 1); 324 usbd_transfer_submit(xfer); 325 } 326 return; 327 328 default: 329 tr_error: 330 /* bomb out */ 331 usb_fifo_get_data_error(sc->sc_fifo.fp[USB_FIFO_TX]); 332 return; 333 } 334 } 335 336 static void 337 uhid_read_callback(struct usb_xfer *xfer, usb_error_t error) 338 { 339 struct uhid_softc *sc = usbd_xfer_softc(xfer); 340 struct usb_device_request req; 341 struct usb_page_cache *pc; 342 343 pc = usbd_xfer_get_frame(xfer, 0); 344 345 switch (USB_GET_STATE(xfer)) { 346 case USB_ST_TRANSFERRED: 347 usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, sizeof(req), 348 sc->sc_isize, 1); 349 return; 350 351 case USB_ST_SETUP: 352 353 if (usb_fifo_put_bytes_max(sc->sc_fifo.fp[USB_FIFO_RX]) > 0) { 354 uhid_fill_get_report 355 (&req, sc->sc_iface_no, UHID_INPUT_REPORT, 356 sc->sc_iid, sc->sc_isize); 357 358 usbd_copy_in(pc, 0, &req, sizeof(req)); 359 360 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 361 usbd_xfer_set_frame_len(xfer, 1, sc->sc_isize); 362 usbd_xfer_set_frames(xfer, sc->sc_isize ? 2 : 1); 363 usbd_transfer_submit(xfer); 364 } 365 return; 366 367 default: /* Error */ 368 /* bomb out */ 369 usb_fifo_put_data_error(sc->sc_fifo.fp[USB_FIFO_RX]); 370 return; 371 } 372 } 373 374 static const struct usb_config uhid_config[UHID_N_TRANSFER] = { 375 [UHID_INTR_DT_WR] = { 376 .type = UE_INTERRUPT, 377 .endpoint = UE_ADDR_ANY, 378 .direction = UE_DIR_OUT, 379 .flags = {.pipe_bof = 1,.no_pipe_ok = 1, }, 380 .bufsize = UHID_BSIZE, 381 .callback = &uhid_intr_write_callback, 382 }, 383 384 [UHID_INTR_DT_RD] = { 385 .type = UE_INTERRUPT, 386 .endpoint = UE_ADDR_ANY, 387 .direction = UE_DIR_IN, 388 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 389 .bufsize = UHID_BSIZE, 390 .callback = &uhid_intr_read_callback, 391 }, 392 393 [UHID_CTRL_DT_WR] = { 394 .type = UE_CONTROL, 395 .endpoint = 0x00, /* Control pipe */ 396 .direction = UE_DIR_ANY, 397 .bufsize = sizeof(struct usb_device_request) + UHID_BSIZE, 398 .callback = &uhid_write_callback, 399 .timeout = 1000, /* 1 second */ 400 }, 401 402 [UHID_CTRL_DT_RD] = { 403 .type = UE_CONTROL, 404 .endpoint = 0x00, /* Control pipe */ 405 .direction = UE_DIR_ANY, 406 .bufsize = sizeof(struct usb_device_request) + UHID_BSIZE, 407 .callback = &uhid_read_callback, 408 .timeout = 1000, /* 1 second */ 409 }, 410 }; 411 412 static void 413 uhid_start_read(struct usb_fifo *fifo) 414 { 415 struct uhid_softc *sc = usb_fifo_softc(fifo); 416 417 if (sc->sc_flags & UHID_FLAG_IMMED) { 418 usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_RD]); 419 } else { 420 usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_RD]); 421 } 422 } 423 424 static void 425 uhid_stop_read(struct usb_fifo *fifo) 426 { 427 struct uhid_softc *sc = usb_fifo_softc(fifo); 428 429 usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_RD]); 430 usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_RD]); 431 } 432 433 static void 434 uhid_start_write(struct usb_fifo *fifo) 435 { 436 struct uhid_softc *sc = usb_fifo_softc(fifo); 437 438 if ((sc->sc_flags & UHID_FLAG_IMMED) || 439 sc->sc_xfer[UHID_INTR_DT_WR] == NULL) { 440 usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_WR]); 441 } else { 442 usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_WR]); 443 } 444 } 445 446 static void 447 uhid_stop_write(struct usb_fifo *fifo) 448 { 449 struct uhid_softc *sc = usb_fifo_softc(fifo); 450 451 usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_WR]); 452 usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_WR]); 453 } 454 455 static int 456 uhid_get_report(struct uhid_softc *sc, uint8_t type, 457 uint8_t id, void *kern_data, void *user_data, 458 uint16_t len) 459 { 460 int err; 461 uint8_t free_data = 0; 462 463 if (kern_data == NULL) { 464 kern_data = malloc(len, M_USBDEV, M_WAITOK); 465 free_data = 1; 466 } 467 err = usbd_req_get_report(sc->sc_udev, NULL, kern_data, 468 len, sc->sc_iface_index, type, id); 469 if (err) { 470 err = ENXIO; 471 goto done; 472 } 473 if (user_data) { 474 /* dummy buffer */ 475 err = copyout(kern_data, user_data, len); 476 if (err) { 477 goto done; 478 } 479 } 480 done: 481 if (free_data) { 482 free(kern_data, M_USBDEV); 483 } 484 return (err); 485 } 486 487 static int 488 uhid_set_report(struct uhid_softc *sc, uint8_t type, 489 uint8_t id, void *kern_data, void *user_data, 490 uint16_t len) 491 { 492 int err; 493 uint8_t free_data = 0; 494 495 if (kern_data == NULL) { 496 kern_data = malloc(len, M_USBDEV, M_WAITOK); 497 free_data = 1; 498 err = copyin(user_data, kern_data, len); 499 if (err) { 500 goto done; 501 } 502 } 503 err = usbd_req_set_report(sc->sc_udev, NULL, kern_data, 504 len, sc->sc_iface_index, type, id); 505 if (err) { 506 err = ENXIO; 507 goto done; 508 } 509 done: 510 if (free_data) { 511 free(kern_data, M_USBDEV); 512 } 513 return (err); 514 } 515 516 static int 517 uhid_open(struct usb_fifo *fifo, int fflags) 518 { 519 struct uhid_softc *sc = usb_fifo_softc(fifo); 520 521 /* 522 * The buffers are one byte larger than maximum so that one 523 * can detect too large read/writes and short transfers: 524 */ 525 if (fflags & FREAD) { 526 /* reset flags */ 527 mtx_lock(&sc->sc_mtx); 528 sc->sc_flags &= ~UHID_FLAG_IMMED; 529 mtx_unlock(&sc->sc_mtx); 530 531 if (usb_fifo_alloc_buffer(fifo, 532 sc->sc_isize + 1, UHID_FRAME_NUM)) { 533 return (ENOMEM); 534 } 535 } 536 if (fflags & FWRITE) { 537 if (usb_fifo_alloc_buffer(fifo, 538 sc->sc_osize + 1, UHID_FRAME_NUM)) { 539 return (ENOMEM); 540 } 541 } 542 return (0); 543 } 544 545 static void 546 uhid_close(struct usb_fifo *fifo, int fflags) 547 { 548 if (fflags & (FREAD | FWRITE)) { 549 usb_fifo_free_buffer(fifo); 550 } 551 } 552 553 static int 554 uhid_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr, 555 int fflags) 556 { 557 struct uhid_softc *sc = usb_fifo_softc(fifo); 558 struct usb_gen_descriptor *ugd; 559 #ifdef COMPAT_FREEBSD32 560 struct usb_gen_descriptor local_ugd; 561 struct usb_gen_descriptor32 *ugd32 = NULL; 562 #endif 563 uint32_t size; 564 int error = 0; 565 uint8_t id; 566 567 ugd = addr; 568 #ifdef COMPAT_FREEBSD32 569 switch (cmd) { 570 case USB_GET_REPORT_DESC32: 571 case USB_GET_REPORT32: 572 case USB_SET_REPORT32: 573 ugd32 = addr; 574 ugd = &local_ugd; 575 usb_gen_descriptor_from32(ugd, ugd32); 576 cmd = _IOC_NEWTYPE(cmd, struct usb_gen_descriptor); 577 break; 578 } 579 #endif 580 581 switch (cmd) { 582 case USB_GET_REPORT_DESC: 583 if (sc->sc_repdesc_size > ugd->ugd_maxlen) { 584 size = ugd->ugd_maxlen; 585 } else { 586 size = sc->sc_repdesc_size; 587 } 588 ugd->ugd_actlen = size; 589 if (ugd->ugd_data == NULL) 590 break; /* descriptor length only */ 591 error = copyout(sc->sc_repdesc_ptr, ugd->ugd_data, size); 592 break; 593 594 case USB_SET_IMMED: 595 if (!(fflags & FREAD)) { 596 error = EPERM; 597 break; 598 } 599 if (*(int *)addr) { 600 /* do a test read */ 601 602 error = uhid_get_report(sc, UHID_INPUT_REPORT, 603 sc->sc_iid, NULL, NULL, sc->sc_isize); 604 if (error) { 605 break; 606 } 607 mtx_lock(&sc->sc_mtx); 608 sc->sc_flags |= UHID_FLAG_IMMED; 609 mtx_unlock(&sc->sc_mtx); 610 } else { 611 mtx_lock(&sc->sc_mtx); 612 sc->sc_flags &= ~UHID_FLAG_IMMED; 613 mtx_unlock(&sc->sc_mtx); 614 } 615 break; 616 617 case USB_GET_REPORT: 618 if (!(fflags & FREAD)) { 619 error = EPERM; 620 break; 621 } 622 switch (ugd->ugd_report_type) { 623 case UHID_INPUT_REPORT: 624 size = sc->sc_isize; 625 id = sc->sc_iid; 626 break; 627 case UHID_OUTPUT_REPORT: 628 size = sc->sc_osize; 629 id = sc->sc_oid; 630 break; 631 case UHID_FEATURE_REPORT: 632 size = sc->sc_fsize; 633 id = sc->sc_fid; 634 break; 635 default: 636 return (EINVAL); 637 } 638 if (id != 0) 639 copyin(ugd->ugd_data, &id, 1); 640 error = uhid_get_report(sc, ugd->ugd_report_type, id, 641 NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size)); 642 break; 643 644 case USB_SET_REPORT: 645 if (!(fflags & FWRITE)) { 646 error = EPERM; 647 break; 648 } 649 switch (ugd->ugd_report_type) { 650 case UHID_INPUT_REPORT: 651 size = sc->sc_isize; 652 id = sc->sc_iid; 653 break; 654 case UHID_OUTPUT_REPORT: 655 size = sc->sc_osize; 656 id = sc->sc_oid; 657 break; 658 case UHID_FEATURE_REPORT: 659 size = sc->sc_fsize; 660 id = sc->sc_fid; 661 break; 662 default: 663 return (EINVAL); 664 } 665 if (id != 0) 666 copyin(ugd->ugd_data, &id, 1); 667 error = uhid_set_report(sc, ugd->ugd_report_type, id, 668 NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size)); 669 break; 670 671 case USB_GET_REPORT_ID: 672 *(int *)addr = 0; /* XXX: we only support reportid 0? */ 673 break; 674 675 default: 676 error = ENOIOCTL; 677 break; 678 } 679 #ifdef COMPAT_FREEBSD32 680 if (ugd32 != NULL) 681 update_usb_gen_descriptor32(ugd32, ugd); 682 #endif 683 return (error); 684 } 685 686 static int 687 uhid_ioctl_post(struct usb_fifo *fifo, u_long cmd, void *addr, 688 int fflags) 689 { 690 int error; 691 692 switch (cmd) { 693 case USB_GET_DEVICEINFO: 694 error = ugen_fill_deviceinfo(fifo, addr); 695 break; 696 697 default: 698 error = EINVAL; 699 break; 700 } 701 return (error); 702 } 703 704 static const STRUCT_USB_HOST_ID uhid_devs[] = { 705 /* generic HID class */ 706 {USB_IFACE_CLASS(UICLASS_HID),}, 707 /* the Xbox 360 gamepad doesn't use the HID class */ 708 {USB_IFACE_CLASS(UICLASS_VENDOR), 709 USB_IFACE_SUBCLASS(UISUBCLASS_XBOX360_CONTROLLER), 710 USB_IFACE_PROTOCOL(UIPROTO_XBOX360_GAMEPAD),}, 711 }; 712 713 static int 714 uhid_probe(device_t dev) 715 { 716 struct usb_attach_arg *uaa = device_get_ivars(dev); 717 int error; 718 void *buf; 719 uint16_t len; 720 721 DPRINTFN(11, "\n"); 722 723 if (uaa->usb_mode != USB_MODE_HOST) 724 return (ENXIO); 725 726 error = usbd_lookup_id_by_uaa(uhid_devs, sizeof(uhid_devs), uaa); 727 if (error) 728 return (error); 729 730 if (usb_test_quirk(uaa, UQ_HID_IGNORE)) 731 return (ENXIO); 732 733 /* 734 * Don't attach to mouse and keyboard devices, hence then no 735 * "nomatch" event is generated and then ums and ukbd won't 736 * attach properly when loaded. 737 */ 738 if ((uaa->info.bInterfaceClass == UICLASS_HID) && 739 (uaa->info.bInterfaceSubClass == UISUBCLASS_BOOT) && 740 (((uaa->info.bInterfaceProtocol == UIPROTO_BOOT_KEYBOARD) && 741 !usb_test_quirk(uaa, UQ_KBD_IGNORE)) || 742 ((uaa->info.bInterfaceProtocol == UIPROTO_MOUSE) && 743 !usb_test_quirk(uaa, UQ_UMS_IGNORE)))) 744 return (ENXIO); 745 746 /* Check for mandatory multitouch usages to give wmt(4) a chance */ 747 if (!usb_test_quirk(uaa, UQ_WMT_IGNORE)) { 748 error = usbd_req_get_hid_desc(uaa->device, NULL, 749 &buf, &len, M_USBDEV, uaa->info.bIfaceIndex); 750 /* Let HID decscriptor-less devices to be handled at attach */ 751 if (!error) { 752 if (hid_locate(buf, len, 753 HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACT_MAX), 754 hid_feature, 0, NULL, NULL, NULL) && 755 hid_locate(buf, len, 756 HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACTID), 757 hid_input, 0, NULL, NULL, NULL)) { 758 free(buf, M_USBDEV); 759 return (ENXIO); 760 } 761 free(buf, M_USBDEV); 762 } 763 } 764 765 return (BUS_PROBE_GENERIC); 766 } 767 768 static int 769 uhid_attach(device_t dev) 770 { 771 struct usb_attach_arg *uaa = device_get_ivars(dev); 772 struct uhid_softc *sc = device_get_softc(dev); 773 int unit = device_get_unit(dev); 774 int error = 0; 775 776 DPRINTFN(10, "sc=%p\n", sc); 777 778 device_set_usb_desc(dev); 779 780 mtx_init(&sc->sc_mtx, "uhid lock", NULL, MTX_DEF | MTX_RECURSE); 781 782 sc->sc_udev = uaa->device; 783 784 sc->sc_iface_no = uaa->info.bIfaceNum; 785 sc->sc_iface_index = uaa->info.bIfaceIndex; 786 787 error = usbd_transfer_setup(uaa->device, 788 &uaa->info.bIfaceIndex, sc->sc_xfer, uhid_config, 789 UHID_N_TRANSFER, sc, &sc->sc_mtx); 790 791 if (error) { 792 DPRINTF("error=%s\n", usbd_errstr(error)); 793 goto detach; 794 } 795 if (uaa->info.idVendor == USB_VENDOR_WACOM) { 796 /* the report descriptor for the Wacom Graphire is broken */ 797 798 if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE) { 799 sc->sc_repdesc_size = sizeof(uhid_graphire_report_descr); 800 sc->sc_repdesc_ptr = __DECONST(void *, &uhid_graphire_report_descr); 801 sc->sc_flags |= UHID_FLAG_STATIC_DESC; 802 803 } else if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) { 804 static uint8_t reportbuf[] = {2, 2, 2}; 805 806 /* 807 * The Graphire3 needs 0x0202 to be written to 808 * feature report ID 2 before it'll start 809 * returning digitizer data. 810 */ 811 error = usbd_req_set_report(uaa->device, NULL, 812 reportbuf, sizeof(reportbuf), 813 uaa->info.bIfaceIndex, UHID_FEATURE_REPORT, 2); 814 815 if (error) { 816 DPRINTF("set report failed, error=%s (ignored)\n", 817 usbd_errstr(error)); 818 } 819 sc->sc_repdesc_size = sizeof(uhid_graphire3_4x5_report_descr); 820 sc->sc_repdesc_ptr = __DECONST(void *, &uhid_graphire3_4x5_report_descr); 821 sc->sc_flags |= UHID_FLAG_STATIC_DESC; 822 } 823 } else if ((uaa->info.bInterfaceClass == UICLASS_VENDOR) && 824 (uaa->info.bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER) && 825 (uaa->info.bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD)) { 826 static const uint8_t reportbuf[3] = {1, 3, 0}; 827 /* 828 * Turn off the four LEDs on the gamepad which 829 * are blinking by default: 830 */ 831 error = usbd_req_set_report(uaa->device, NULL, 832 __DECONST(void *, reportbuf), sizeof(reportbuf), 833 uaa->info.bIfaceIndex, UHID_OUTPUT_REPORT, 0); 834 if (error) { 835 DPRINTF("set output report failed, error=%s (ignored)\n", 836 usbd_errstr(error)); 837 } 838 /* the Xbox 360 gamepad has no report descriptor */ 839 sc->sc_repdesc_size = sizeof(uhid_xb360gp_report_descr); 840 sc->sc_repdesc_ptr = __DECONST(void *, &uhid_xb360gp_report_descr); 841 sc->sc_flags |= UHID_FLAG_STATIC_DESC; 842 } 843 if (sc->sc_repdesc_ptr == NULL) { 844 error = usbd_req_get_hid_desc(uaa->device, NULL, 845 &sc->sc_repdesc_ptr, &sc->sc_repdesc_size, 846 M_USBDEV, uaa->info.bIfaceIndex); 847 848 if (error) { 849 device_printf(dev, "no report descriptor\n"); 850 goto detach; 851 } 852 } 853 error = usbd_req_set_idle(uaa->device, NULL, 854 uaa->info.bIfaceIndex, 0, 0); 855 856 if (error) { 857 DPRINTF("set idle failed, error=%s (ignored)\n", 858 usbd_errstr(error)); 859 } 860 sc->sc_isize = hid_report_size_max 861 (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_input, &sc->sc_iid); 862 863 sc->sc_osize = hid_report_size_max 864 (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_output, &sc->sc_oid); 865 866 sc->sc_fsize = hid_report_size_max 867 (sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_feature, &sc->sc_fid); 868 869 if (sc->sc_isize > UHID_BSIZE) { 870 DPRINTF("input size is too large, " 871 "%d bytes (truncating)\n", 872 sc->sc_isize); 873 sc->sc_isize = UHID_BSIZE; 874 } 875 if (sc->sc_osize > UHID_BSIZE) { 876 DPRINTF("output size is too large, " 877 "%d bytes (truncating)\n", 878 sc->sc_osize); 879 sc->sc_osize = UHID_BSIZE; 880 } 881 if (sc->sc_fsize > UHID_BSIZE) { 882 DPRINTF("feature size is too large, " 883 "%d bytes (truncating)\n", 884 sc->sc_fsize); 885 sc->sc_fsize = UHID_BSIZE; 886 } 887 888 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 889 &uhid_fifo_methods, &sc->sc_fifo, 890 unit, -1, uaa->info.bIfaceIndex, 891 UID_ROOT, GID_OPERATOR, 0644); 892 if (error) { 893 goto detach; 894 } 895 return (0); /* success */ 896 897 detach: 898 uhid_detach(dev); 899 return (ENOMEM); 900 } 901 902 static int 903 uhid_detach(device_t dev) 904 { 905 struct uhid_softc *sc = device_get_softc(dev); 906 907 usb_fifo_detach(&sc->sc_fifo); 908 909 usbd_transfer_unsetup(sc->sc_xfer, UHID_N_TRANSFER); 910 911 if (sc->sc_repdesc_ptr) { 912 if (!(sc->sc_flags & UHID_FLAG_STATIC_DESC)) { 913 free(sc->sc_repdesc_ptr, M_USBDEV); 914 } 915 } 916 mtx_destroy(&sc->sc_mtx); 917 918 return (0); 919 } 920 921 static device_method_t uhid_methods[] = { 922 DEVMETHOD(device_probe, uhid_probe), 923 DEVMETHOD(device_attach, uhid_attach), 924 DEVMETHOD(device_detach, uhid_detach), 925 926 DEVMETHOD_END 927 }; 928 929 static driver_t uhid_driver = { 930 #ifdef HIDRAW_MAKE_UHID_ALIAS 931 .name = "hidraw", 932 #else 933 .name = "uhid", 934 #endif 935 .methods = uhid_methods, 936 .size = sizeof(struct uhid_softc), 937 }; 938 939 DRIVER_MODULE(uhid, uhub, uhid_driver, NULL, NULL); 940 MODULE_DEPEND(uhid, usb, 1, 1, 1); 941 MODULE_DEPEND(uhid, hid, 1, 1, 1); 942 MODULE_VERSION(uhid, 1); 943 USB_PNP_HOST_INFO(uhid_devs);
Cache object: ef7dff151c6f7bfb6f295728f6aa4186
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