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/usbdi_util.c
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1 /* $NetBSD: usbdi_util.c,v 1.40 2002/07/11 21:14:36 augustss Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/usbdi_util.c,v 1.14 1999/11/17 22:33:50 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #include <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: usbdi_util.c,v 1.40 2002/07/11 21:14:36 augustss Exp $"); 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/malloc.h> 48 #if defined(__NetBSD__) || defined(__OpenBSD__) 49 #include <sys/proc.h> 50 #include <sys/device.h> 51 #elif defined(__FreeBSD__) 52 #include <sys/bus.h> 53 #endif 54 55 #include <dev/usb/usb.h> 56 #include <dev/usb/usbhid.h> 57 58 #include <dev/usb/usbdi.h> 59 #include <dev/usb/usbdi_util.h> 60 61 #ifdef USB_DEBUG 62 #define DPRINTF(x) if (usbdebug) logprintf x 63 #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x 64 extern int usbdebug; 65 #else 66 #define DPRINTF(x) 67 #define DPRINTFN(n,x) 68 #endif 69 70 usbd_status 71 usbd_get_desc(usbd_device_handle dev, int type, int index, int len, void *desc) 72 { 73 usb_device_request_t req; 74 75 DPRINTFN(3,("usbd_get_desc: type=%d, index=%d, len=%d\n", 76 type, index, len)); 77 78 req.bmRequestType = UT_READ_DEVICE; 79 req.bRequest = UR_GET_DESCRIPTOR; 80 USETW2(req.wValue, type, index); 81 USETW(req.wIndex, 0); 82 USETW(req.wLength, len); 83 return (usbd_do_request(dev, &req, desc)); 84 } 85 86 usbd_status 87 usbd_get_config_desc(usbd_device_handle dev, int confidx, 88 usb_config_descriptor_t *d) 89 { 90 usbd_status err; 91 92 DPRINTFN(3,("usbd_get_config_desc: confidx=%d\n", confidx)); 93 err = usbd_get_desc(dev, UDESC_CONFIG, confidx, 94 USB_CONFIG_DESCRIPTOR_SIZE, d); 95 if (err) 96 return (err); 97 if (d->bDescriptorType != UDESC_CONFIG) { 98 DPRINTFN(-1,("usbd_get_config_desc: confidx=%d, bad desc " 99 "len=%d type=%d\n", 100 confidx, d->bLength, d->bDescriptorType)); 101 return (USBD_INVAL); 102 } 103 return (USBD_NORMAL_COMPLETION); 104 } 105 106 usbd_status 107 usbd_get_config_desc_full(usbd_device_handle dev, int conf, void *d, int size) 108 { 109 DPRINTFN(3,("usbd_get_config_desc_full: conf=%d\n", conf)); 110 return (usbd_get_desc(dev, UDESC_CONFIG, conf, size, d)); 111 } 112 113 usbd_status 114 usbd_get_device_desc(usbd_device_handle dev, usb_device_descriptor_t *d) 115 { 116 DPRINTFN(3,("usbd_get_device_desc:\n")); 117 return (usbd_get_desc(dev, UDESC_DEVICE, 118 0, USB_DEVICE_DESCRIPTOR_SIZE, d)); 119 } 120 121 usbd_status 122 usbd_get_device_status(usbd_device_handle dev, usb_status_t *st) 123 { 124 usb_device_request_t req; 125 126 req.bmRequestType = UT_READ_DEVICE; 127 req.bRequest = UR_GET_STATUS; 128 USETW(req.wValue, 0); 129 USETW(req.wIndex, 0); 130 USETW(req.wLength, sizeof(usb_status_t)); 131 return (usbd_do_request(dev, &req, st)); 132 } 133 134 usbd_status 135 usbd_get_hub_status(usbd_device_handle dev, usb_hub_status_t *st) 136 { 137 usb_device_request_t req; 138 139 req.bmRequestType = UT_READ_CLASS_DEVICE; 140 req.bRequest = UR_GET_STATUS; 141 USETW(req.wValue, 0); 142 USETW(req.wIndex, 0); 143 USETW(req.wLength, sizeof(usb_hub_status_t)); 144 return (usbd_do_request(dev, &req, st)); 145 } 146 147 usbd_status 148 usbd_set_address(usbd_device_handle dev, int addr) 149 { 150 usb_device_request_t req; 151 152 req.bmRequestType = UT_WRITE_DEVICE; 153 req.bRequest = UR_SET_ADDRESS; 154 USETW(req.wValue, addr); 155 USETW(req.wIndex, 0); 156 USETW(req.wLength, 0); 157 return usbd_do_request(dev, &req, 0); 158 } 159 160 usbd_status 161 usbd_get_port_status(usbd_device_handle dev, int port, usb_port_status_t *ps) 162 { 163 usb_device_request_t req; 164 165 req.bmRequestType = UT_READ_CLASS_OTHER; 166 req.bRequest = UR_GET_STATUS; 167 USETW(req.wValue, 0); 168 USETW(req.wIndex, port); 169 USETW(req.wLength, sizeof *ps); 170 return (usbd_do_request(dev, &req, ps)); 171 } 172 173 usbd_status 174 usbd_clear_hub_feature(usbd_device_handle dev, int sel) 175 { 176 usb_device_request_t req; 177 178 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 179 req.bRequest = UR_CLEAR_FEATURE; 180 USETW(req.wValue, sel); 181 USETW(req.wIndex, 0); 182 USETW(req.wLength, 0); 183 return (usbd_do_request(dev, &req, 0)); 184 } 185 186 usbd_status 187 usbd_set_hub_feature(usbd_device_handle dev, int sel) 188 { 189 usb_device_request_t req; 190 191 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 192 req.bRequest = UR_SET_FEATURE; 193 USETW(req.wValue, sel); 194 USETW(req.wIndex, 0); 195 USETW(req.wLength, 0); 196 return (usbd_do_request(dev, &req, 0)); 197 } 198 199 usbd_status 200 usbd_clear_port_feature(usbd_device_handle dev, int port, int sel) 201 { 202 usb_device_request_t req; 203 204 req.bmRequestType = UT_WRITE_CLASS_OTHER; 205 req.bRequest = UR_CLEAR_FEATURE; 206 USETW(req.wValue, sel); 207 USETW(req.wIndex, port); 208 USETW(req.wLength, 0); 209 return (usbd_do_request(dev, &req, 0)); 210 } 211 212 usbd_status 213 usbd_set_port_feature(usbd_device_handle dev, int port, int sel) 214 { 215 usb_device_request_t req; 216 217 req.bmRequestType = UT_WRITE_CLASS_OTHER; 218 req.bRequest = UR_SET_FEATURE; 219 USETW(req.wValue, sel); 220 USETW(req.wIndex, port); 221 USETW(req.wLength, 0); 222 return (usbd_do_request(dev, &req, 0)); 223 } 224 225 usbd_status 226 usbd_get_protocol(usbd_interface_handle iface, u_int8_t *report) 227 { 228 usb_interface_descriptor_t *id = usbd_get_interface_descriptor(iface); 229 usbd_device_handle dev; 230 usb_device_request_t req; 231 232 DPRINTFN(4, ("usbd_get_protocol: iface=%p, endpt=%d\n", 233 iface, id->bInterfaceNumber)); 234 if (id == NULL) 235 return (USBD_IOERROR); 236 usbd_interface2device_handle(iface, &dev); 237 req.bmRequestType = UT_READ_CLASS_INTERFACE; 238 req.bRequest = UR_GET_PROTOCOL; 239 USETW(req.wValue, 0); 240 USETW(req.wIndex, id->bInterfaceNumber); 241 USETW(req.wLength, 1); 242 return (usbd_do_request(dev, &req, report)); 243 } 244 245 usbd_status 246 usbd_set_protocol(usbd_interface_handle iface, int report) 247 { 248 usb_interface_descriptor_t *id = usbd_get_interface_descriptor(iface); 249 usbd_device_handle dev; 250 usb_device_request_t req; 251 252 DPRINTFN(4, ("usbd_set_protocol: iface=%p, report=%d, endpt=%d\n", 253 iface, report, id->bInterfaceNumber)); 254 if (id == NULL) 255 return (USBD_IOERROR); 256 usbd_interface2device_handle(iface, &dev); 257 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 258 req.bRequest = UR_SET_PROTOCOL; 259 USETW(req.wValue, report); 260 USETW(req.wIndex, id->bInterfaceNumber); 261 USETW(req.wLength, 0); 262 return (usbd_do_request(dev, &req, 0)); 263 } 264 265 usbd_status 266 usbd_set_report(usbd_interface_handle iface, int type, int id, void *data, 267 int len) 268 { 269 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 270 usbd_device_handle dev; 271 usb_device_request_t req; 272 273 DPRINTFN(4, ("usbd_set_report: len=%d\n", len)); 274 if (ifd == NULL) 275 return (USBD_IOERROR); 276 usbd_interface2device_handle(iface, &dev); 277 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 278 req.bRequest = UR_SET_REPORT; 279 USETW2(req.wValue, type, id); 280 USETW(req.wIndex, ifd->bInterfaceNumber); 281 USETW(req.wLength, len); 282 return (usbd_do_request(dev, &req, data)); 283 } 284 285 usbd_status 286 usbd_set_report_async(usbd_interface_handle iface, int type, int id, void *data, 287 int len) 288 { 289 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 290 usbd_device_handle dev; 291 usb_device_request_t req; 292 293 DPRINTFN(4, ("usbd_set_report_async: len=%d\n", len)); 294 if (ifd == NULL) 295 return (USBD_IOERROR); 296 usbd_interface2device_handle(iface, &dev); 297 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 298 req.bRequest = UR_SET_REPORT; 299 USETW2(req.wValue, type, id); 300 USETW(req.wIndex, ifd->bInterfaceNumber); 301 USETW(req.wLength, len); 302 return (usbd_do_request_async(dev, &req, data)); 303 } 304 305 usbd_status 306 usbd_get_report(usbd_interface_handle iface, int type, int id, void *data, 307 int len) 308 { 309 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 310 usbd_device_handle dev; 311 usb_device_request_t req; 312 313 DPRINTFN(4, ("usbd_get_report: len=%d\n", len)); 314 if (ifd == NULL) 315 return (USBD_IOERROR); 316 usbd_interface2device_handle(iface, &dev); 317 req.bmRequestType = UT_READ_CLASS_INTERFACE; 318 req.bRequest = UR_GET_REPORT; 319 USETW2(req.wValue, type, id); 320 USETW(req.wIndex, ifd->bInterfaceNumber); 321 USETW(req.wLength, len); 322 return (usbd_do_request(dev, &req, data)); 323 } 324 325 usbd_status 326 usbd_set_idle(usbd_interface_handle iface, int duration, int id) 327 { 328 usb_interface_descriptor_t *ifd = usbd_get_interface_descriptor(iface); 329 usbd_device_handle dev; 330 usb_device_request_t req; 331 332 DPRINTFN(4, ("usbd_set_idle: %d %d\n", duration, id)); 333 if (ifd == NULL) 334 return (USBD_IOERROR); 335 usbd_interface2device_handle(iface, &dev); 336 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 337 req.bRequest = UR_SET_IDLE; 338 USETW2(req.wValue, duration, id); 339 USETW(req.wIndex, ifd->bInterfaceNumber); 340 USETW(req.wLength, 0); 341 return (usbd_do_request(dev, &req, 0)); 342 } 343 344 usbd_status 345 usbd_get_report_descriptor(usbd_device_handle dev, int ifcno, 346 int size, void *d) 347 { 348 usb_device_request_t req; 349 350 req.bmRequestType = UT_READ_INTERFACE; 351 req.bRequest = UR_GET_DESCRIPTOR; 352 USETW2(req.wValue, UDESC_REPORT, 0); /* report id should be 0 */ 353 USETW(req.wIndex, ifcno); 354 USETW(req.wLength, size); 355 return (usbd_do_request(dev, &req, d)); 356 } 357 358 usb_hid_descriptor_t * 359 usbd_get_hid_descriptor(usbd_interface_handle ifc) 360 { 361 usb_interface_descriptor_t *idesc = usbd_get_interface_descriptor(ifc); 362 usbd_device_handle dev; 363 usb_config_descriptor_t *cdesc; 364 usb_hid_descriptor_t *hd; 365 char *p, *end; 366 367 if (idesc == NULL) 368 return (0); 369 usbd_interface2device_handle(ifc, &dev); 370 cdesc = usbd_get_config_descriptor(dev); 371 372 p = (char *)idesc + idesc->bLength; 373 end = (char *)cdesc + UGETW(cdesc->wTotalLength); 374 375 for (; p < end; p += hd->bLength) { 376 hd = (usb_hid_descriptor_t *)p; 377 if (p + hd->bLength <= end && hd->bDescriptorType == UDESC_HID) 378 return (hd); 379 if (hd->bDescriptorType == UDESC_INTERFACE) 380 break; 381 } 382 return (0); 383 } 384 385 usbd_status 386 usbd_read_report_desc(usbd_interface_handle ifc, void **descp, int *sizep, 387 usb_malloc_type mem) 388 { 389 usb_interface_descriptor_t *id; 390 usb_hid_descriptor_t *hid; 391 usbd_device_handle dev; 392 usbd_status err; 393 394 usbd_interface2device_handle(ifc, &dev); 395 id = usbd_get_interface_descriptor(ifc); 396 if (id == NULL) 397 return (USBD_INVAL); 398 hid = usbd_get_hid_descriptor(ifc); 399 if (hid == NULL) 400 return (USBD_IOERROR); 401 *sizep = UGETW(hid->descrs[0].wDescriptorLength); 402 *descp = malloc(*sizep, mem, M_NOWAIT); 403 if (*descp == NULL) 404 return (USBD_NOMEM); 405 err = usbd_get_report_descriptor(dev, id->bInterfaceNumber, 406 *sizep, *descp); 407 if (err) { 408 free(*descp, mem); 409 *descp = NULL; 410 return (err); 411 } 412 return (USBD_NORMAL_COMPLETION); 413 } 414 415 usbd_status 416 usbd_get_config(usbd_device_handle dev, u_int8_t *conf) 417 { 418 usb_device_request_t req; 419 420 req.bmRequestType = UT_READ_DEVICE; 421 req.bRequest = UR_GET_CONFIG; 422 USETW(req.wValue, 0); 423 USETW(req.wIndex, 0); 424 USETW(req.wLength, 1); 425 return (usbd_do_request(dev, &req, conf)); 426 } 427 428 Static void usbd_bulk_transfer_cb(usbd_xfer_handle xfer, 429 usbd_private_handle priv, usbd_status status); 430 Static void 431 usbd_bulk_transfer_cb(usbd_xfer_handle xfer, usbd_private_handle priv, 432 usbd_status status) 433 { 434 wakeup(xfer); 435 } 436 437 usbd_status 438 usbd_bulk_transfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe, 439 u_int16_t flags, u_int32_t timeout, void *buf, 440 u_int32_t *size, char *lbl) 441 { 442 usbd_status err; 443 int s, error; 444 445 usbd_setup_xfer(xfer, pipe, 0, buf, *size, 446 flags, timeout, usbd_bulk_transfer_cb); 447 DPRINTFN(1, ("usbd_bulk_transfer: start transfer %d bytes\n", *size)); 448 s = splusb(); /* don't want callback until tsleep() */ 449 err = usbd_transfer(xfer); 450 if (err != USBD_IN_PROGRESS) { 451 splx(s); 452 return (err); 453 } 454 error = tsleep((caddr_t)xfer, PZERO | PCATCH, lbl, 0); 455 splx(s); 456 if (error) { 457 DPRINTF(("usbd_bulk_transfer: tsleep=%d\n", error)); 458 usbd_abort_pipe(pipe); 459 return (USBD_INTERRUPTED); 460 } 461 usbd_get_xfer_status(xfer, NULL, NULL, size, &err); 462 DPRINTFN(1,("usbd_bulk_transfer: transferred %d\n", *size)); 463 if (err) { 464 DPRINTF(("usbd_bulk_transfer: error=%d\n", err)); 465 usbd_clear_endpoint_stall(pipe); 466 } 467 return (err); 468 } 469 470 void 471 usb_detach_wait(device_ptr_t dv) 472 { 473 DPRINTF(("usb_detach_wait: waiting for %s\n", USBDEVPTRNAME(dv))); 474 if (tsleep(dv, PZERO, "usbdet", hz * 60)) 475 printf("usb_detach_wait: %s didn't detach\n", 476 USBDEVPTRNAME(dv)); 477 DPRINTF(("usb_detach_wait: %s done\n", USBDEVPTRNAME(dv))); 478 } 479 480 void 481 usb_detach_wakeup(device_ptr_t dv) 482 { 483 DPRINTF(("usb_detach_wakeup: for %s\n", USBDEVPTRNAME(dv))); 484 wakeup(dv); 485 } 486 487 usb_descriptor_t * 488 usb_find_desc(usbd_device_handle dev, int type) 489 { 490 usb_descriptor_t *desc; 491 usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev); 492 uByte *p = (uByte *)cd; 493 uByte *end = p + UGETW(cd->wTotalLength); 494 495 while (p < end) { 496 desc = (usb_descriptor_t *)p; 497 if (desc->bDescriptorType == type) 498 return (desc); 499 p += desc->bLength; 500 } 501 502 return (NULL); 503 }
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