Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/uhidev.c
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1 /* $NetBSD: uhidev.c,v 1.20 2004/01/04 11:11:56 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: uhidev.c,v 1.20 2004/01/04 11:11:56 augustss Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/malloc.h> 51 #include <sys/signalvar.h> 52 #include <sys/device.h> 53 #include <sys/ioctl.h> 54 #include <sys/conf.h> 55 56 #include <dev/usb/usb.h> 57 #include <dev/usb/usbhid.h> 58 59 #include <dev/usb/usbdevs.h> 60 #include <dev/usb/usbdi.h> 61 #include <dev/usb/usbdi_util.h> 62 #include <dev/usb/hid.h> 63 #include <dev/usb/usb_quirks.h> 64 65 #include <dev/usb/uhidev.h> 66 67 /* Report descriptor for broken Wacom Graphire */ 68 #include <dev/usb/ugraphire_rdesc.h> 69 70 #ifdef UHIDEV_DEBUG 71 #define DPRINTF(x) if (uhidevdebug) logprintf x 72 #define DPRINTFN(n,x) if (uhidevdebug>(n)) logprintf x 73 int uhidevdebug = 0; 74 #else 75 #define DPRINTF(x) 76 #define DPRINTFN(n,x) 77 #endif 78 79 Static void uhidev_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 80 81 Static int uhidev_maxrepid(void *buf, int len); 82 Static int uhidevprint(void *aux, const char *pnp); 83 Static int uhidevsubmatch(struct device *parent, struct cfdata *cf, void *aux); 84 85 USB_DECLARE_DRIVER(uhidev); 86 87 USB_MATCH(uhidev) 88 { 89 USB_MATCH_START(uhidev, uaa); 90 usb_interface_descriptor_t *id; 91 92 if (uaa->iface == NULL) 93 return (UMATCH_NONE); 94 id = usbd_get_interface_descriptor(uaa->iface); 95 if (id == NULL || id->bInterfaceClass != UICLASS_HID) 96 return (UMATCH_NONE); 97 if (uaa->matchlvl) 98 return (uaa->matchlvl); 99 return (UMATCH_IFACECLASS_GENERIC); 100 } 101 102 USB_ATTACH(uhidev) 103 { 104 USB_ATTACH_START(uhidev, sc, uaa); 105 usbd_interface_handle iface = uaa->iface; 106 usb_interface_descriptor_t *id; 107 usb_endpoint_descriptor_t *ed; 108 struct uhidev_attach_arg uha; 109 struct uhidev *dev; 110 int size, nrepid, repid, repsz; 111 int repsizes[256]; 112 void *desc; 113 const void *descptr; 114 usbd_status err; 115 char devinfo[1024]; 116 117 sc->sc_udev = uaa->device; 118 sc->sc_iface = iface; 119 id = usbd_get_interface_descriptor(iface); 120 usbd_devinfo(uaa->device, 0, devinfo); 121 USB_ATTACH_SETUP; 122 printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev), 123 devinfo, id->bInterfaceClass, id->bInterfaceSubClass); 124 125 (void)usbd_set_idle(iface, 0, 0); 126 #if 0 127 128 qflags = usbd_get_quirks(sc->sc_udev)->uq_flags; 129 if ((qflags & UQ_NO_SET_PROTO) == 0 && 130 id->bInterfaceSubClass != UISUBCLASS_BOOT) 131 (void)usbd_set_protocol(iface, 1); 132 #endif 133 134 ed = usbd_interface2endpoint_descriptor(iface, 0); 135 if (ed == NULL) { 136 printf("%s: could not read endpoint descriptor\n", 137 USBDEVNAME(sc->sc_dev)); 138 sc->sc_dying = 1; 139 USB_ATTACH_ERROR_RETURN; 140 } 141 142 DPRINTFN(10,("uhidev_attach: bLength=%d bDescriptorType=%d " 143 "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d" 144 " bInterval=%d\n", 145 ed->bLength, ed->bDescriptorType, 146 ed->bEndpointAddress & UE_ADDR, 147 UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out", 148 ed->bmAttributes & UE_XFERTYPE, 149 UGETW(ed->wMaxPacketSize), ed->bInterval)); 150 151 if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN || 152 (ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 153 printf("%s: unexpected endpoint\n", USBDEVNAME(sc->sc_dev)); 154 sc->sc_dying = 1; 155 USB_ATTACH_ERROR_RETURN; 156 } 157 158 sc->sc_ep_addr = ed->bEndpointAddress; 159 160 /* XXX need to extend this */ 161 descptr = NULL; 162 if (uaa->vendor == USB_VENDOR_WACOM) { 163 static uByte reportbuf[] = {2, 2, 2}; 164 165 /* The report descriptor for the Wacom Graphire is broken. */ 166 switch (uaa->product) { 167 case USB_PRODUCT_WACOM_GRAPHIRE: 168 size = sizeof uhid_graphire_report_descr; 169 descptr = uhid_graphire_report_descr; 170 break; 171 172 case USB_PRODUCT_WACOM_GRAPHIRE3_4X5: /* The 6x8 too? */ 173 /* 174 * The Graphire3 needs 0x0202 to be written to 175 * feature report ID 2 before it'll start 176 * returning digitizer data. 177 */ 178 usbd_set_report(uaa->iface, UHID_FEATURE_REPORT, 2, 179 &reportbuf, sizeof reportbuf); 180 181 size = sizeof uhid_graphire3_4x5_report_descr; 182 descptr = uhid_graphire3_4x5_report_descr; 183 break; 184 default: 185 /* Keep descriptor */ 186 break; 187 } 188 } 189 190 if (descptr) { 191 desc = malloc(size, M_USBDEV, M_NOWAIT); 192 if (desc == NULL) 193 err = USBD_NOMEM; 194 else { 195 err = USBD_NORMAL_COMPLETION; 196 memcpy(desc, descptr, size); 197 } 198 } else { 199 desc = NULL; 200 err = usbd_read_report_desc(uaa->iface, &desc, &size, 201 M_USBDEV); 202 } 203 if (err) { 204 printf("%s: no report descriptor\n", USBDEVNAME(sc->sc_dev)); 205 sc->sc_dying = 1; 206 USB_ATTACH_ERROR_RETURN; 207 } 208 209 sc->sc_repdesc = desc; 210 sc->sc_repdesc_size = size; 211 212 uha.uaa = uaa; 213 nrepid = uhidev_maxrepid(desc, size); 214 if (nrepid < 0) 215 USB_ATTACH_SUCCESS_RETURN; 216 if (nrepid > 0) 217 printf("%s: %d report ids\n", USBDEVNAME(sc->sc_dev), nrepid); 218 nrepid++; 219 sc->sc_subdevs = malloc(nrepid * sizeof(device_ptr_t), 220 M_USBDEV, M_NOWAIT | M_ZERO); 221 if (sc->sc_subdevs == NULL) { 222 printf("%s: no memory\n", USBDEVNAME(sc->sc_dev)); 223 USB_ATTACH_ERROR_RETURN; 224 } 225 sc->sc_nrepid = nrepid; 226 sc->sc_isize = 0; 227 228 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 229 USBDEV(sc->sc_dev)); 230 231 for (repid = 0; repid < nrepid; repid++) { 232 repsz = hid_report_size(desc, size, hid_input, repid); 233 DPRINTF(("uhidev_match: repid=%d, repsz=%d\n", repid, repsz)); 234 repsizes[repid] = repsz; 235 if (repsz > 0) { 236 if (repsz > sc->sc_isize) 237 sc->sc_isize = repsz; 238 } 239 } 240 sc->sc_isize += nrepid != 1; /* space for report ID */ 241 DPRINTF(("uhidev_attach: isize=%d\n", sc->sc_isize)); 242 243 uha.parent = sc; 244 for (repid = 0; repid < nrepid; repid++) { 245 DPRINTF(("uhidev_match: try repid=%d\n", repid)); 246 if (hid_report_size(desc, size, hid_input, repid) == 0 && 247 hid_report_size(desc, size, hid_output, repid) == 0 && 248 hid_report_size(desc, size, hid_feature, repid) == 0) { 249 ; /* already NULL in sc->sc_subdevs[repid] */ 250 } else { 251 uha.reportid = repid; 252 dev = (struct uhidev *)config_found_sm(self, &uha, 253 uhidevprint, uhidevsubmatch); 254 sc->sc_subdevs[repid] = dev; 255 if (dev != NULL) { 256 dev->sc_in_rep_size = repsizes[repid]; 257 #ifdef DIAGNOSTIC 258 DPRINTF(("uhidev_match: repid=%d dev=%p\n", 259 repid, dev)); 260 if (dev->sc_intr == NULL) { 261 printf("%s: sc_intr == NULL\n", 262 USBDEVNAME(sc->sc_dev)); 263 USB_ATTACH_ERROR_RETURN; 264 } 265 #endif 266 #if NRND > 0 267 rnd_attach_source(&dev->rnd_source, 268 USBDEVNAME(dev->sc_dev), 269 RND_TYPE_TTY, 0); 270 #endif 271 } 272 } 273 } 274 275 USB_ATTACH_SUCCESS_RETURN; 276 } 277 278 int 279 uhidev_maxrepid(void *buf, int len) 280 { 281 struct hid_data *d; 282 struct hid_item h; 283 int maxid; 284 285 maxid = -1; 286 h.report_ID = 0; 287 for (d = hid_start_parse(buf, len, hid_none); hid_get_item(d, &h); ) 288 if (h.report_ID > maxid) 289 maxid = h.report_ID; 290 hid_end_parse(d); 291 return (maxid); 292 } 293 294 int 295 uhidevprint(void *aux, const char *pnp) 296 { 297 struct uhidev_attach_arg *uha = aux; 298 299 if (pnp) 300 aprint_normal("uhid at %s", pnp); 301 if (uha->reportid != 0) 302 aprint_normal(" reportid %d", uha->reportid); 303 return (UNCONF); 304 } 305 306 int 307 uhidevsubmatch(struct device *parent, struct cfdata *cf, void *aux) 308 { 309 struct uhidev_attach_arg *uha = aux; 310 311 if (cf->uhidevcf_reportid != UHIDEV_UNK_REPORTID && 312 cf->uhidevcf_reportid != uha->reportid) 313 return (0); 314 if (cf->uhidevcf_reportid == uha->reportid) 315 uha->matchlvl = UMATCH_VENDOR_PRODUCT; 316 else 317 uha->matchlvl = 0; 318 return (config_match(parent, cf, aux)); 319 } 320 321 int 322 uhidev_activate(device_ptr_t self, enum devact act) 323 { 324 struct uhidev_softc *sc = (struct uhidev_softc *)self; 325 int i, rv; 326 327 switch (act) { 328 case DVACT_ACTIVATE: 329 return (EOPNOTSUPP); 330 331 case DVACT_DEACTIVATE: 332 rv = 0; 333 for (i = 0; i < sc->sc_nrepid; i++) 334 if (sc->sc_subdevs[i] != NULL) 335 rv |= config_deactivate( 336 &sc->sc_subdevs[i]->sc_dev); 337 sc->sc_dying = 1; 338 break; 339 default: 340 rv = 0; 341 break; 342 } 343 return (rv); 344 } 345 346 USB_DETACH(uhidev) 347 { 348 USB_DETACH_START(uhidev, sc); 349 int i, rv; 350 351 DPRINTF(("uhidev_detach: sc=%p flags=%d\n", sc, flags)); 352 353 sc->sc_dying = 1; 354 if (sc->sc_intrpipe != NULL) 355 usbd_abort_pipe(sc->sc_intrpipe); 356 357 if (sc->sc_repdesc != NULL) 358 free(sc->sc_repdesc, M_USBDEV); 359 360 rv = 0; 361 for (i = 0; i < sc->sc_nrepid; i++) { 362 if (sc->sc_subdevs[i] != NULL) { 363 #if NRND > 0 364 rnd_detach_source(&sc->sc_subdevs[i]->rnd_source); 365 #endif 366 rv |= config_detach(&sc->sc_subdevs[i]->sc_dev, flags); 367 sc->sc_subdevs[i] = NULL; 368 } 369 } 370 371 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 372 USBDEV(sc->sc_dev)); 373 374 return (rv); 375 } 376 377 void 378 uhidev_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 379 { 380 struct uhidev_softc *sc = addr; 381 struct uhidev *scd; 382 u_char *p; 383 u_int rep; 384 u_int32_t cc; 385 386 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL); 387 388 #ifdef UHIDEV_DEBUG 389 if (uhidevdebug > 5) { 390 u_int32_t i; 391 392 DPRINTF(("uhidev_intr: status=%d cc=%d\n", status, cc)); 393 DPRINTF(("uhidev_intr: data =")); 394 for (i = 0; i < cc; i++) 395 DPRINTF((" %02x", sc->sc_ibuf[i])); 396 DPRINTF(("\n")); 397 } 398 #endif 399 400 if (status == USBD_CANCELLED) 401 return; 402 403 if (status != USBD_NORMAL_COMPLETION) { 404 DPRINTF(("%s: interrupt status=%d\n", USBDEVNAME(sc->sc_dev), 405 status)); 406 usbd_clear_endpoint_stall_async(sc->sc_intrpipe); 407 return; 408 } 409 410 p = sc->sc_ibuf; 411 if (sc->sc_nrepid != 1) 412 rep = *p++, cc--; 413 else 414 rep = 0; 415 if (rep >= sc->sc_nrepid) { 416 printf("uhidev_intr: bad repid %d\n", rep); 417 return; 418 } 419 scd = sc->sc_subdevs[rep]; 420 DPRINTFN(5,("uhidev_intr: rep=%d, scd=%p state=0x%x\n", 421 rep, scd, scd ? scd->sc_state : 0)); 422 if (scd == NULL || !(scd->sc_state & UHIDEV_OPEN)) 423 return; 424 #ifdef DIAGNOSTIC 425 if (scd->sc_in_rep_size != cc) 426 printf("%s: bad input length %d != %d\n",USBDEVNAME(sc->sc_dev), 427 scd->sc_in_rep_size, cc); 428 #endif 429 #if NRND > 0 430 rnd_add_uint32(&scd->rnd_source, (uintptr_t)(sc->sc_ibuf)); 431 #endif 432 scd->sc_intr(scd, p, cc); 433 } 434 435 void 436 uhidev_get_report_desc(struct uhidev_softc *sc, void **desc, int *size) 437 { 438 *desc = sc->sc_repdesc; 439 *size = sc->sc_repdesc_size; 440 } 441 442 int 443 uhidev_open(struct uhidev *scd) 444 { 445 struct uhidev_softc *sc = scd->sc_parent; 446 usbd_status err; 447 448 DPRINTF(("uhidev_open: open pipe, state=%d refcnt=%d\n", 449 scd->sc_state, sc->sc_refcnt)); 450 451 if (scd->sc_state & UHIDEV_OPEN) 452 return (EBUSY); 453 scd->sc_state |= UHIDEV_OPEN; 454 if (sc->sc_refcnt++) 455 return (0); 456 457 if (sc->sc_isize == 0) 458 return (0); 459 460 sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK); 461 462 /* Set up interrupt pipe. */ 463 DPRINTF(("uhidev_open: isize=%d, ep=0x%02x\n", sc->sc_isize, 464 sc->sc_ep_addr)); 465 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr, 466 USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc, sc->sc_ibuf, 467 sc->sc_isize, uhidev_intr, USBD_DEFAULT_INTERVAL); 468 if (err) { 469 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, " 470 "error=%d\n",err)); 471 free(sc->sc_ibuf, M_USBDEV); 472 scd->sc_state &= ~UHIDEV_OPEN; 473 sc->sc_refcnt = 0; 474 sc->sc_intrpipe = NULL; 475 return (EIO); 476 } 477 return (0); 478 } 479 480 void 481 uhidev_close(struct uhidev *scd) 482 { 483 struct uhidev_softc *sc = scd->sc_parent; 484 485 if (!(scd->sc_state & UHIDEV_OPEN)) 486 return; 487 scd->sc_state &= ~UHIDEV_OPEN; 488 if (--sc->sc_refcnt) 489 return; 490 DPRINTF(("uhidev_close: close pipe\n")); 491 492 /* Disable interrupts. */ 493 if (sc->sc_intrpipe != NULL) { 494 usbd_abort_pipe(sc->sc_intrpipe); 495 usbd_close_pipe(sc->sc_intrpipe); 496 sc->sc_intrpipe = NULL; 497 } 498 499 if (sc->sc_ibuf != NULL) { 500 free(sc->sc_ibuf, M_USBDEV); 501 sc->sc_ibuf = NULL; 502 } 503 } 504 505 usbd_status 506 uhidev_set_report(struct uhidev *scd, int type, void *data, int len) 507 { 508 char *buf; 509 usbd_status retstat; 510 511 if (scd->sc_report_id == 0) 512 return usbd_set_report(scd->sc_parent->sc_iface, type, 513 scd->sc_report_id, data, len); 514 515 buf = malloc(len + 1, M_TEMP, M_WAITOK); 516 buf[0] = scd->sc_report_id; 517 memcpy(buf+1, data, len); 518 519 retstat = usbd_set_report(scd->sc_parent->sc_iface, type, 520 scd->sc_report_id, buf, len + 1); 521 522 free(buf, M_TEMP); 523 524 return retstat; 525 } 526 527 void 528 uhidev_set_report_async(struct uhidev *scd, int type, void *data, int len) 529 { 530 /* XXX */ 531 char buf[100]; 532 if (scd->sc_report_id) { 533 buf[0] = scd->sc_report_id; 534 memcpy(buf+1, data, len); 535 len++; 536 data = buf; 537 } 538 539 usbd_set_report_async(scd->sc_parent->sc_iface, type, 540 scd->sc_report_id, data, len); 541 } 542 543 usbd_status 544 uhidev_get_report(struct uhidev *scd, int type, void *data, int len) 545 { 546 return usbd_get_report(scd->sc_parent->sc_iface, type, 547 scd->sc_report_id, data, len); 548 }
Cache object: 80efa435bbc4a2047190d09bde837bfe
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