usbdi_util.c revision 1.58
1 /* $NetBSD: usbdi_util.c,v 1.58 2013/01/05 01:30:18 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2012 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 (at) augustsson.net) at 9 * Carlstedt Research & Technology and Matthew R. Green (mrg (at) eterna.com.au). 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: usbdi_util.c,v 1.58 2013/01/05 01:30:18 christos Exp $"); 35 36 #ifdef _KERNEL_OPT 37 #include "opt_usb.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/malloc.h> 44 #include <sys/proc.h> 45 #include <sys/device.h> 46 #include <sys/bus.h> 47 48 #include <dev/usb/usb.h> 49 #include <dev/usb/usbhid.h> 50 51 #include <dev/usb/usbdi.h> 52 #include <dev/usb/usbdivar.h> 53 #include <dev/usb/usbdi_util.h> 54 55 #ifdef USB_DEBUG 56 #define DPRINTF(x) if (usbdebug) printf x 57 #define DPRINTFN(n,x) if (usbdebug>(n)) printf x 58 extern int usbdebug; 59 #else 60 #define DPRINTF(x) 61 #define DPRINTFN(n,x) 62 #endif 63 64 usbd_status 65 usbd_get_desc(usbd_device_handle dev, int type, int index, int len, void *desc) 66 { 67 usb_device_request_t req; 68 69 DPRINTFN(3,("usbd_get_desc: type=%d, index=%d, len=%d\n", 70 type, index, len)); 71 72 req.bmRequestType = UT_READ_DEVICE; 73 req.bRequest = UR_GET_DESCRIPTOR; 74 USETW2(req.wValue, type, index); 75 USETW(req.wIndex, 0); 76 USETW(req.wLength, len); 77 return (usbd_do_request(dev, &req, desc)); 78 } 79 80 usbd_status 81 usbd_get_config_desc(usbd_device_handle dev, int confidx, 82 usb_config_descriptor_t *d) 83 { 84 usbd_status err; 85 86 DPRINTFN(3,("usbd_get_config_desc: confidx=%d\n", confidx)); 87 err = usbd_get_desc(dev, UDESC_CONFIG, confidx, 88 USB_CONFIG_DESCRIPTOR_SIZE, d); 89 if (err) 90 return (err); 91 if (d->bDescriptorType != UDESC_CONFIG) { 92 DPRINTFN(-1,("usbd_get_config_desc: confidx=%d, bad desc " 93 "len=%d type=%d\n", 94 confidx, d->bLength, d->bDescriptorType)); 95 return (USBD_INVAL); 96 } 97 return (USBD_NORMAL_COMPLETION); 98 } 99 100 usbd_status 101 usbd_get_config_desc_full(usbd_device_handle dev, int conf, void *d, int size) 102 { 103 DPRINTFN(3,("usbd_get_config_desc_full: conf=%d\n", conf)); 104 return (usbd_get_desc(dev, UDESC_CONFIG, conf, size, d)); 105 } 106 107 usbd_status 108 usbd_get_device_desc(usbd_device_handle dev, usb_device_descriptor_t *d) 109 { 110 DPRINTFN(3,("usbd_get_device_desc:\n")); 111 return (usbd_get_desc(dev, UDESC_DEVICE, 112 0, USB_DEVICE_DESCRIPTOR_SIZE, d)); 113 } 114 115 usbd_status 116 usbd_get_device_status(usbd_device_handle dev, usb_status_t *st) 117 { 118 usb_device_request_t req; 119 120 req.bmRequestType = UT_READ_DEVICE; 121 req.bRequest = UR_GET_STATUS; 122 USETW(req.wValue, 0); 123 USETW(req.wIndex, 0); 124 USETW(req.wLength, sizeof(usb_status_t)); 125 return (usbd_do_request(dev, &req, st)); 126 } 127 128 usbd_status 129 usbd_get_hub_status(usbd_device_handle dev, usb_hub_status_t *st) 130 { 131 usb_device_request_t req; 132 133 req.bmRequestType = UT_READ_CLASS_DEVICE; 134 req.bRequest = UR_GET_STATUS; 135 USETW(req.wValue, 0); 136 USETW(req.wIndex, 0); 137 USETW(req.wLength, sizeof(usb_hub_status_t)); 138 return (usbd_do_request(dev, &req, st)); 139 } 140 141 usbd_status 142 usbd_set_address(usbd_device_handle dev, int addr) 143 { 144 usb_device_request_t req; 145 146 req.bmRequestType = UT_WRITE_DEVICE; 147 req.bRequest = UR_SET_ADDRESS; 148 USETW(req.wValue, addr); 149 USETW(req.wIndex, 0); 150 USETW(req.wLength, 0); 151 return usbd_do_request(dev, &req, 0); 152 } 153 154 usbd_status 155 usbd_get_port_status(usbd_device_handle dev, int port, usb_port_status_t *ps) 156 { 157 usb_device_request_t req; 158 159 req.bmRequestType = UT_READ_CLASS_OTHER; 160 req.bRequest = UR_GET_STATUS; 161 USETW(req.wValue, 0); 162 USETW(req.wIndex, port); 163 USETW(req.wLength, sizeof *ps); 164 return (usbd_do_request(dev, &req, ps)); 165 } 166 167 usbd_status 168 usbd_clear_hub_feature(usbd_device_handle dev, int sel) 169 { 170 usb_device_request_t req; 171 172 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 173 req.bRequest = UR_CLEAR_FEATURE; 174 USETW(req.wValue, sel); 175 USETW(req.wIndex, 0); 176 USETW(req.wLength, 0); 177 return (usbd_do_request(dev, &req, 0)); 178 } 179 180 usbd_status 181 usbd_set_hub_feature(usbd_device_handle dev, int sel) 182 { 183 usb_device_request_t req; 184 185 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 186 req.bRequest = UR_SET_FEATURE; 187 USETW(req.wValue, sel); 188 USETW(req.wIndex, 0); 189 USETW(req.wLength, 0); 190 return (usbd_do_request(dev, &req, 0)); 191 } 192 193 usbd_status 194 usbd_clear_port_feature(usbd_device_handle dev, int port, int sel) 195 { 196 usb_device_request_t req; 197 198 req.bmRequestType = UT_WRITE_CLASS_OTHER; 199 req.bRequest = UR_CLEAR_FEATURE; 200 USETW(req.wValue, sel); 201 USETW(req.wIndex, port); 202 USETW(req.wLength, 0); 203 return (usbd_do_request(dev, &req, 0)); 204 } 205 206 usbd_status 207 usbd_set_port_feature(usbd_device_handle dev, int port, int sel) 208 { 209 usb_device_request_t req; 210 211 req.bmRequestType = UT_WRITE_CLASS_OTHER; 212 req.bRequest = UR_SET_FEATURE; 213 USETW(req.wValue, sel); 214 USETW(req.wIndex, port); 215 USETW(req.wLength, 0); 216 return (usbd_do_request(dev, &req, 0)); 217 } 218 219 usbd_status 220 usbd_get_protocol(usbd_interface_handle iface, u_int8_t *report) 221 { 222 usb_interface_descriptor_t *id = usbd_get_interface_descriptor(iface); 223 usbd_device_handle dev; 224 usb_device_request_t req; 225 226 DPRINTFN(4, ("usbd_get_protocol: iface=%p, endpt=%d\n", 227 iface, id->bInterfaceNumber)); 228 if (id == NULL) 229 return (USBD_IOERROR); 230 usbd_interface2device_handle(iface, &dev); 231 req.bmRequestType = UT_READ_CLASS_INTERFACE; 232 req.bRequest = UR_GET_PROTOCOL; 233 USETW(req.wValue, 0); 234 USETW(req.wIndex, id->bInterfaceNumber); 235 USETW(req.wLength, 1); 236 return (usbd_do_request(dev, &req, report)); 237 } 238 239 usbd_status 240 usbd_set_protocol(usbd_interface_handle iface, int report) 241 { 242 usb_interface_descriptor_t *id = usbd_get_interface_descriptor(iface); 243 usbd_device_handle dev; 244 usb_device_request_t req; 245 246 DPRINTFN(4, ("usbd_set_protocol: iface=%p, report=%d, endpt=%d\n", 247 iface, report, id->bInterfaceNumber)); 248 if (id == NULL) 249 return (USBD_IOERROR); 250 usbd_interface2device_handle(iface, &dev); 251 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 252 req.bRequest = UR_SET_PROTOCOL; 253 USETW(req.wValue, report); 254 USETW(req.wIndex, id->bInterfaceNumber); 255 USETW(req.wLength, 0); 256 return (usbd_do_request(dev, &req, 0)); 257 } 258 259 usbd_status 260 usbd_set_report(usbd_interface_handle iface, int type, int id, void *data, 261 int len) 262 { 263 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 264 usbd_device_handle dev; 265 usb_device_request_t req; 266 267 DPRINTFN(4, ("usbd_set_report: len=%d\n", len)); 268 if (ifd == NULL) 269 return (USBD_IOERROR); 270 usbd_interface2device_handle(iface, &dev); 271 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 272 req.bRequest = UR_SET_REPORT; 273 USETW2(req.wValue, type, id); 274 USETW(req.wIndex, ifd->bInterfaceNumber); 275 USETW(req.wLength, len); 276 return (usbd_do_request(dev, &req, data)); 277 } 278 279 usbd_status 280 usbd_set_report_async(usbd_interface_handle iface, int type, int id, void *data, 281 int len) 282 { 283 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 284 usbd_device_handle dev; 285 usb_device_request_t req; 286 287 DPRINTFN(4, ("usbd_set_report_async: len=%d\n", len)); 288 if (ifd == NULL) 289 return (USBD_IOERROR); 290 usbd_interface2device_handle(iface, &dev); 291 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 292 req.bRequest = UR_SET_REPORT; 293 USETW2(req.wValue, type, id); 294 USETW(req.wIndex, ifd->bInterfaceNumber); 295 USETW(req.wLength, len); 296 return (usbd_do_request_async(dev, &req, data)); 297 } 298 299 usbd_status 300 usbd_get_report(usbd_interface_handle iface, int type, int id, void *data, 301 int len) 302 { 303 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 304 usbd_device_handle dev; 305 usb_device_request_t req; 306 307 DPRINTFN(4, ("usbd_get_report: len=%d\n", len)); 308 if (ifd == NULL) 309 return (USBD_IOERROR); 310 usbd_interface2device_handle(iface, &dev); 311 req.bmRequestType = UT_READ_CLASS_INTERFACE; 312 req.bRequest = UR_GET_REPORT; 313 USETW2(req.wValue, type, id); 314 USETW(req.wIndex, ifd->bInterfaceNumber); 315 USETW(req.wLength, len); 316 return (usbd_do_request(dev, &req, data)); 317 } 318 319 usbd_status 320 usbd_set_idle(usbd_interface_handle iface, int duration, int id) 321 { 322 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 323 usbd_device_handle dev; 324 usb_device_request_t req; 325 326 DPRINTFN(4, ("usbd_set_idle: %d %d\n", duration, id)); 327 if (ifd == NULL) 328 return (USBD_IOERROR); 329 usbd_interface2device_handle(iface, &dev); 330 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 331 req.bRequest = UR_SET_IDLE; 332 USETW2(req.wValue, duration, id); 333 USETW(req.wIndex, ifd->bInterfaceNumber); 334 USETW(req.wLength, 0); 335 return (usbd_do_request(dev, &req, 0)); 336 } 337 338 usbd_status 339 usbd_get_report_descriptor(usbd_device_handle dev, int ifcno, 340 int size, void *d) 341 { 342 usb_device_request_t req; 343 344 req.bmRequestType = UT_READ_INTERFACE; 345 req.bRequest = UR_GET_DESCRIPTOR; 346 USETW2(req.wValue, UDESC_REPORT, 0); /* report id should be 0 */ 347 USETW(req.wIndex, ifcno); 348 USETW(req.wLength, size); 349 return (usbd_do_request(dev, &req, d)); 350 } 351 352 usb_hid_descriptor_t * 353 usbd_get_hid_descriptor(usbd_interface_handle ifc) 354 { 355 usb_interface_descriptor_t *idesc = usbd_get_interface_descriptor(ifc); 356 usbd_device_handle dev; 357 usb_config_descriptor_t *cdesc; 358 usb_hid_descriptor_t *hd; 359 char *p, *end; 360 361 if (idesc == NULL) 362 return (NULL); 363 usbd_interface2device_handle(ifc, &dev); 364 cdesc = usbd_get_config_descriptor(dev); 365 366 p = (char *)idesc + idesc->bLength; 367 end = (char *)cdesc + UGETW(cdesc->wTotalLength); 368 369 for (; p < end; p += hd->bLength) { 370 hd = (usb_hid_descriptor_t *)p; 371 if (p + hd->bLength <= end && hd->bDescriptorType == UDESC_HID) 372 return (hd); 373 if (hd->bDescriptorType == UDESC_INTERFACE) 374 break; 375 } 376 return (NULL); 377 } 378 379 usbd_status 380 usbd_read_report_desc(usbd_interface_handle ifc, void **descp, int *sizep, 381 struct malloc_type * mem) 382 { 383 usb_interface_descriptor_t *id; 384 usb_hid_descriptor_t *hid; 385 usbd_device_handle dev; 386 usbd_status err; 387 388 usbd_interface2device_handle(ifc, &dev); 389 id = usbd_get_interface_descriptor(ifc); 390 if (id == NULL) 391 return (USBD_INVAL); 392 hid = usbd_get_hid_descriptor(ifc); 393 if (hid == NULL) 394 return (USBD_IOERROR); 395 *sizep = UGETW(hid->descrs[0].wDescriptorLength); 396 *descp = malloc(*sizep, mem, M_NOWAIT); 397 if (*descp == NULL) 398 return (USBD_NOMEM); 399 err = usbd_get_report_descriptor(dev, id->bInterfaceNumber, 400 *sizep, *descp); 401 if (err) { 402 free(*descp, mem); 403 *descp = NULL; 404 return (err); 405 } 406 return (USBD_NORMAL_COMPLETION); 407 } 408 409 usbd_status 410 usbd_get_config(usbd_device_handle dev, u_int8_t *conf) 411 { 412 usb_device_request_t req; 413 414 req.bmRequestType = UT_READ_DEVICE; 415 req.bRequest = UR_GET_CONFIG; 416 USETW(req.wValue, 0); 417 USETW(req.wIndex, 0); 418 USETW(req.wLength, 1); 419 return (usbd_do_request(dev, &req, conf)); 420 } 421 422 Static void usbd_bulk_transfer_cb(usbd_xfer_handle xfer, 423 usbd_private_handle priv, usbd_status status); 424 Static void 425 usbd_bulk_transfer_cb(usbd_xfer_handle xfer, usbd_private_handle priv, 426 usbd_status status) 427 { 428 429 if (xfer->pipe->device->bus->lock) 430 cv_broadcast(&xfer->cv); 431 else 432 wakeup(xfer); /* XXXSMP ok */ 433 } 434 435 usbd_status 436 usbd_bulk_transfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe, 437 u_int16_t flags, u_int32_t timeout, void *buf, 438 u_int32_t *size, const char *lbl) 439 { 440 usbd_status err; 441 442 usbd_setup_xfer(xfer, pipe, 0, buf, *size, 443 flags, timeout, usbd_bulk_transfer_cb); 444 DPRINTFN(1, ("usbd_bulk_transfer: start transfer %d bytes\n", *size)); 445 446 err = usbd_sync_transfer_sig(xfer); 447 usbd_get_xfer_status(xfer, NULL, NULL, size, NULL); 448 DPRINTFN(1,("usbd_bulk_transfer: transferred %d\n", *size)); 449 if (err) { 450 DPRINTF(("usbd_bulk_transfer: error=%d\n", err)); 451 usbd_clear_endpoint_stall(pipe); 452 } 453 return (err); 454 } 455 456 Static void usbd_intr_transfer_cb(usbd_xfer_handle xfer, 457 usbd_private_handle priv, usbd_status status); 458 Static void 459 usbd_intr_transfer_cb(usbd_xfer_handle xfer, usbd_private_handle priv, 460 usbd_status status) 461 { 462 463 if (xfer->pipe->device->bus->lock) 464 cv_broadcast(&xfer->cv); 465 else 466 wakeup(xfer); /* XXXSMP ok */ 467 } 468 469 usbd_status 470 usbd_intr_transfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe, 471 u_int16_t flags, u_int32_t timeout, void *buf, 472 u_int32_t *size, const char *lbl) 473 { 474 usbd_status err; 475 476 usbd_setup_xfer(xfer, pipe, 0, buf, *size, 477 flags, timeout, usbd_intr_transfer_cb); 478 DPRINTFN(1, ("usbd_intr_transfer: start transfer %d bytes\n", *size)); 479 err = usbd_sync_transfer_sig(xfer); 480 usbd_get_xfer_status(xfer, NULL, NULL, size, NULL); 481 DPRINTFN(1,("usbd_intr_transfer: transferred %d\n", *size)); 482 if (err) { 483 DPRINTF(("usbd_intr_transfer: error=%d\n", err)); 484 usbd_clear_endpoint_stall(pipe); 485 } 486 return (err); 487 } 488 489 void 490 usb_detach_wait(device_t dv, kcondvar_t *cv, kmutex_t *lock) 491 { 492 DPRINTF(("usb_detach_wait: waiting for %s\n", device_xname(dv))); 493 if (cv_timedwait(cv, lock, hz * 60)) // dv, PZERO, "usbdet", hz * 60 494 printf("usb_detach_wait: %s didn't detach\n", 495 device_xname(dv)); 496 DPRINTF(("usb_detach_waitold: %s done\n", device_xname(dv))); 497 } 498 499 void 500 usb_detach_broadcast(device_t dv, kcondvar_t *cv) 501 { 502 DPRINTF(("usb_detach_broadcast: for %s\n", device_xname(dv))); 503 cv_broadcast(cv); 504 } 505 506 void 507 usb_detach_waitold(device_t dv) 508 { 509 DPRINTF(("usb_detach_waitold: waiting for %s\n", device_xname(dv))); 510 if (tsleep(dv, PZERO, "usbdet", hz * 60)) /* XXXSMP ok */ 511 printf("usb_detach_waitold: %s didn't detach\n", 512 device_xname(dv)); 513 DPRINTF(("usb_detach_waitold: %s done\n", device_xname(dv))); 514 } 515 516 void 517 usb_detach_wakeupold(device_t dv) 518 { 519 DPRINTF(("usb_detach_wakeupold: for %s\n", device_xname(dv))); 520 wakeup(dv); /* XXXSMP ok */ 521 } 522 523 const usb_cdc_descriptor_t * 524 usb_find_desc(usbd_device_handle dev, int type, int subtype) 525 { 526 usbd_desc_iter_t iter; 527 const usb_cdc_descriptor_t *desc; 528 529 usb_desc_iter_init(dev, &iter); 530 for (;;) { 531 desc = (const usb_cdc_descriptor_t *)usb_desc_iter_next(&iter); 532 if (!desc || (desc->bDescriptorType == type && 533 (subtype == USBD_CDCSUBTYPE_ANY || 534 subtype == desc->bDescriptorSubtype))) 535 break; 536 } 537 return desc; 538 } 539 540 /* same as usb_find_desc(), but searches only in the specified interface. */ 541 const usb_cdc_descriptor_t * 542 usb_find_desc_if(usbd_device_handle dev, int type, int subtype, 543 usb_interface_descriptor_t *id) 544 { 545 usbd_desc_iter_t iter; 546 const usb_cdc_descriptor_t *desc; 547 548 if (id == NULL) 549 return usb_find_desc(dev, type, subtype); 550 551 usb_desc_iter_init(dev, &iter); 552 553 iter.cur = (void *)id; /* start from the interface desc */ 554 usb_desc_iter_next(&iter); /* and skip it */ 555 556 while ((desc = (const usb_cdc_descriptor_t *)usb_desc_iter_next(&iter)) 557 != NULL) { 558 if (desc->bDescriptorType == UDESC_INTERFACE) { 559 /* we ran into the next interface --- not found */ 560 return NULL; 561 } 562 if (desc->bDescriptorType == type && 563 (subtype == USBD_CDCSUBTYPE_ANY || 564 subtype == desc->bDescriptorSubtype)) 565 break; 566 } 567 return desc; 568 } 569
Indexes created Sat Sep 27 14:09:57 GMT 2025