u3g.c revision 1.25.2.4
1 /* $NetBSD: u3g.c,v 1.25.2.4 2017/12/03 11:37:34 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Copyright (c) 2008 AnyWi Technologies 33 * Author: Andrea Guzzo <aguzzo (at) anywi.com> 34 * * based on uark.c 1.1 2006/08/14 08:30:22 jsg * 35 * * parts from ubsa.c 183348 2008-09-25 12:00:56Z phk * 36 * 37 * Permission to use, copy, modify, and distribute this software for any 38 * purpose with or without fee is hereby granted, provided that the above 39 * copyright notice and this permission notice appear in all copies. 40 * 41 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 42 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 43 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 44 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 45 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 46 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 47 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 48 * 49 * $FreeBSD$ 50 */ 51 52 #include <sys/cdefs.h> 53 __KERNEL_RCSID(0, "$NetBSD: u3g.c,v 1.25.2.4 2017/12/03 11:37:34 jdolecek Exp $"); 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/kmem.h> 59 #include <sys/bus.h> 60 #include <sys/conf.h> 61 #include <sys/tty.h> 62 63 #include <dev/usb/usb.h> 64 #include <dev/usb/usbdi.h> 65 #include <dev/usb/usbdivar.h> 66 #include <dev/usb/usbdi_util.h> 67 68 #include <dev/usb/ucomvar.h> 69 70 #include "usbdevs.h" 71 72 /* 73 * We read/write data from/to the device in 4KB chunks to maximise 74 * performance. 75 */ 76 #define U3G_BUFF_SIZE 4096 77 78 /* 79 * Some 3G devices (the Huawei E160/E220 springs to mind here) buffer up 80 * data internally even when the USB pipes are closed. So on first open, 81 * we can receive a large chunk of stale data. 82 * 83 * This causes a real problem because the default TTYDEF_LFLAG (applied 84 * on first open) has the ECHO flag set, resulting in all the stale data 85 * being echoed straight back to the device by the tty(4) layer. Some 86 * devices (again, the Huawei E160/E220 for example) react to this spew 87 * by going catatonic. 88 * 89 * All this happens before the application gets a chance to disable ECHO. 90 * 91 * We work around this by ignoring all data received from the device for 92 * a period of two seconds, or until the application starts sending data - 93 * whichever comes first. 94 */ 95 #define U3G_PURGE_SECS 2 96 97 /* 98 * Define bits for the virtual modem control pins. 99 * The input pin states are reported via the interrupt pipe on some devices. 100 */ 101 #define U3G_OUTPIN_DTR (1u << 0) 102 #define U3G_OUTPIN_RTS (1u << 1) 103 #define U3G_INPIN_DCD (1u << 0) 104 #define U3G_INPIN_DSR (1u << 1) 105 #define U3G_INPIN_RI (1u << 3) 106 107 /* 108 * USB request to set the output pin status 109 */ 110 #define U3G_SET_PIN 0x22 111 112 struct u3g_softc { 113 device_t sc_dev; 114 struct usbd_device * sc_udev; 115 bool sc_dying; /* We're going away */ 116 int sc_ifaceno; /* Device interface number */ 117 118 struct u3g_com { 119 device_t c_dev; /* Child ucom(4) handle */ 120 121 bool c_open; /* Device is in use */ 122 bool c_purging; /* Purging stale data */ 123 struct timeval c_purge_start; /* Control duration of purge */ 124 125 u_char c_msr; /* Emulated 'msr' */ 126 uint16_t c_outpins; /* Output pin state */ 127 } sc_com[10]; 128 size_t sc_ncom; 129 130 struct usbd_pipe * sc_intr_pipe; /* Interrupt pipe */ 131 u_char *sc_intr_buff; /* Interrupt buffer */ 132 size_t sc_intr_size; /* buffer size */ 133 }; 134 135 /* 136 * The device driver has two personalities. The first uses the 'usbdevif' 137 * interface attribute so that a match will claim the entire USB device 138 * for itself. This is used for when a device needs to be mode-switched 139 * and ensures any other interfaces present cannot be claimed by other 140 * drivers while the mode-switch is in progress. This is implemented by 141 * the umodeswitch driver. 142 * 143 * The second personality uses the 'usbifif' interface attribute so that 144 * it can claim the 3G modem interfaces for itself, leaving others (such 145 * as the mass storage interfaces on some devices) for other drivers. 146 */ 147 148 static int u3g_match(device_t, cfdata_t, void *); 149 static void u3g_attach(device_t, device_t, void *); 150 static int u3g_detach(device_t, int); 151 static int u3g_activate(device_t, enum devact); 152 static void u3g_childdet(device_t, device_t); 153 154 CFATTACH_DECL2_NEW(u3g, sizeof(struct u3g_softc), u3g_match, 155 u3g_attach, u3g_detach, u3g_activate, NULL, u3g_childdet); 156 157 158 static void u3g_intr(struct usbd_xfer *, void *, usbd_status); 159 static void u3g_get_status(void *, int, u_char *, u_char *); 160 static void u3g_set(void *, int, int, int); 161 static int u3g_open(void *, int); 162 static void u3g_close(void *, int); 163 static void u3g_read(void *, int, u_char **, uint32_t *); 164 static void u3g_write(void *, int, u_char *, u_char *, uint32_t *); 165 166 struct ucom_methods u3g_methods = { 167 .ucom_get_status = u3g_get_status, 168 .ucom_set = u3g_set, 169 .ucom_param = NULL, 170 .ucom_ioctl = NULL, 171 .ucom_open = u3g_open, 172 .ucom_close = u3g_close, 173 .ucom_read = u3g_read, 174 .ucom_write = u3g_write, 175 }; 176 177 /* 178 * Allegedly supported devices 179 */ 180 static const struct usb_devno u3g_devs[] = { 181 { USB_VENDOR_DELL, USB_PRODUCT_DELL_W5500 }, 182 { USB_VENDOR_HP, USB_PRODUCT_HP_UN2430 }, 183 /* OEM: Huawei */ 184 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E1750 }, 185 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E1820 }, 186 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E220 }, 187 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_EM770W }, 188 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_K3765 }, 189 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_MOBILE }, 190 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E171 }, 191 { USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E353 }, 192 /* OEM: Merlin */ 193 { USB_VENDOR_MERLIN, USB_PRODUCT_MERLIN_V620 }, 194 /* OEM: Novatel */ 195 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_ES620 }, 196 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_EU8X0D }, 197 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_MC950D }, 198 #if 0 199 /* These are matched in u3ginit_match() */ 200 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_MC950D_DRIVER }, 201 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_U760_DRIVER }, 202 #endif 203 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_MERLINU740 }, 204 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_MERLINV620 }, 205 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_S720 }, 206 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_U720 }, 207 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_U727 }, 208 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_U740_2 }, 209 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_U760 }, 210 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_U870 }, 211 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_V740 }, 212 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_X950D }, 213 { USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_XU870 }, 214 /* OEM: Option N.V. */ 215 { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_QUADPLUSUMTS }, 216 { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_HSDPA }, 217 { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_GTMAXHSUPA }, 218 /* OEM: Qualcomm, Inc. */ 219 { USB_VENDOR_QUALCOMM, USB_PRODUCT_QUALCOMM_NTT_DOCOMO_L02C_MODEM }, 220 221 /* OEM: Sierra Wireless: */ 222 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC595U }, 223 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC597E }, 224 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC875U }, 225 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC880 }, 226 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC880E }, 227 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC880U }, 228 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC881 }, 229 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC881E }, 230 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AC881U }, 231 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AIRCARD580 }, 232 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AIRCARD595 }, 233 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AIRCARD875 }, 234 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_C597 }, 235 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_EM5625 }, 236 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC5720 }, 237 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC5720_2 }, 238 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC5725 }, 239 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8755 }, 240 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8755_2 }, 241 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8755_3 }, 242 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8765 }, 243 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8775_2 }, 244 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8780 }, 245 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC8781 }, 246 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MINI5725 }, 247 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_USB305 }, 248 { USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_250U }, 249 /* Toshiba */ 250 { USB_VENDOR_TOSHIBA, USB_PRODUCT_TOSHIBA_HSDPA_MODEM_EU870DT1 }, 251 252 /* ZTE */ 253 { USB_VENDOR_ZTE, USB_PRODUCT_ZTE_MF622 }, 254 { USB_VENDOR_ZTE, USB_PRODUCT_ZTE_MF626 }, 255 { USB_VENDOR_ZTE, USB_PRODUCT_ZTE_MF628 }, 256 { USB_VENDOR_ZTE, USB_PRODUCT_ZTE_MF820D }, 257 258 /* 4G Systems */ 259 { USB_VENDOR_4GSYSTEMS, USB_PRODUCT_4GSYSTEMS_XSSTICK_P14 }, 260 { USB_VENDOR_4GSYSTEMS, USB_PRODUCT_4GSYSTEMS_XSSTICK_W14 }, 261 }; 262 263 /* 264 * Second personality: 265 * 266 * Claim only those interfaces required for 3G modem operation. 267 */ 268 269 static int 270 u3g_match(device_t parent, cfdata_t match, void *aux) 271 { 272 struct usbif_attach_arg *uiaa = aux; 273 struct usbd_interface *iface; 274 usb_interface_descriptor_t *id; 275 usbd_status error; 276 277 if (!usb_lookup(u3g_devs, uiaa->uiaa_vendor, uiaa->uiaa_product)) 278 return UMATCH_NONE; 279 280 error = usbd_device2interface_handle(uiaa->uiaa_device, 281 uiaa->uiaa_ifaceno, &iface); 282 if (error) { 283 printf("u3g_match: failed to get interface, err=%s\n", 284 usbd_errstr(error)); 285 return UMATCH_NONE; 286 } 287 288 id = usbd_get_interface_descriptor(iface); 289 if (id == NULL) { 290 printf("u3g_match: failed to get interface descriptor\n"); 291 return UMATCH_NONE; 292 } 293 294 /* 295 * Huawei modems use the vendor-specific class for all interfaces, 296 * both tty and CDC NCM, which we should avoid attaching to. 297 */ 298 if (uiaa->uiaa_vendor == USB_VENDOR_HUAWEI && 299 id->bInterfaceSubClass == 2 && 300 (id->bInterfaceProtocol & 0xf) == 6) /* 0x16, 0x46, 0x76 */ 301 return UMATCH_NONE; 302 303 /* 304 * 3G modems generally report vendor-specific class 305 * 306 * XXX: this may be too generalised. 307 */ 308 return id->bInterfaceClass == UICLASS_VENDOR ? 309 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 310 } 311 312 static void 313 u3g_attach(device_t parent, device_t self, void *aux) 314 { 315 struct u3g_softc *sc = device_private(self); 316 struct usbif_attach_arg *uiaa = aux; 317 struct usbd_device *dev = uiaa->uiaa_device; 318 struct usbd_interface *iface; 319 usb_interface_descriptor_t *id; 320 usb_endpoint_descriptor_t *ed; 321 struct ucom_attach_args ucaa; 322 usbd_status error; 323 int n, intr_address, intr_size; 324 325 aprint_naive("\n"); 326 aprint_normal("\n"); 327 328 sc->sc_dev = self; 329 sc->sc_dying = false; 330 sc->sc_udev = dev; 331 332 error = usbd_device2interface_handle(dev, uiaa->uiaa_ifaceno, &iface); 333 if (error) { 334 aprint_error_dev(self, "failed to get interface, err=%s\n", 335 usbd_errstr(error)); 336 return; 337 } 338 339 id = usbd_get_interface_descriptor(iface); 340 341 ucaa.ucaa_info = "3G Modem"; 342 ucaa.ucaa_ibufsize = U3G_BUFF_SIZE; 343 ucaa.ucaa_obufsize = U3G_BUFF_SIZE; 344 ucaa.ucaa_ibufsizepad = U3G_BUFF_SIZE; 345 ucaa.ucaa_opkthdrlen = 0; 346 ucaa.ucaa_device = dev; 347 ucaa.ucaa_iface = iface; 348 ucaa.ucaa_methods = &u3g_methods; 349 ucaa.ucaa_arg = sc; 350 ucaa.ucaa_portno = -1; 351 ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1; 352 353 354 sc->sc_ifaceno = uiaa->uiaa_ifaceno; 355 intr_address = -1; 356 intr_size = 0; 357 358 for (n = 0; n < id->bNumEndpoints; n++) { 359 ed = usbd_interface2endpoint_descriptor(iface, n); 360 if (ed == NULL) { 361 aprint_error_dev(self, "no endpoint descriptor " 362 "for %d (interface: %d)\n", n, sc->sc_ifaceno); 363 sc->sc_dying = true; 364 return; 365 } 366 367 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 368 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 369 intr_address = ed->bEndpointAddress; 370 intr_size = UGETW(ed->wMaxPacketSize); 371 } else 372 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 373 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 374 ucaa.ucaa_bulkin = ed->bEndpointAddress; 375 } else 376 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 377 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 378 ucaa.ucaa_bulkout = ed->bEndpointAddress; 379 } 380 if (ucaa.ucaa_bulkin != -1 && ucaa.ucaa_bulkout != -1) { 381 struct u3g_com *com; 382 if (sc->sc_ncom == __arraycount(sc->sc_com)) { 383 aprint_error_dev(self, "Need to configure " 384 "more than %zu ttys", sc->sc_ncom); 385 continue; 386 } 387 ucaa.ucaa_portno = sc->sc_ncom++; 388 com = &sc->sc_com[ucaa.ucaa_portno]; 389 com->c_outpins = 0; 390 com->c_msr = UMSR_DSR | UMSR_CTS | UMSR_DCD; 391 com->c_open = false; 392 com->c_purging = false; 393 com->c_dev = config_found_sm_loc(self, "ucombus", 394 NULL, &ucaa, ucomprint, ucomsubmatch); 395 ucaa.ucaa_bulkin = -1; 396 ucaa.ucaa_bulkout = -1; 397 } 398 } 399 400 if (sc->sc_ncom == 0) { 401 aprint_error_dev(self, "Missing bulk in/out for interface %d\n", 402 sc->sc_ifaceno); 403 sc->sc_dying = true; 404 return; 405 } 406 407 /* 408 * If the interface has an interrupt pipe, open it immediately so 409 * that we can track input pin state changes regardless of whether 410 * the tty(4) device is open or not. 411 */ 412 if (intr_address != -1) { 413 sc->sc_intr_size = intr_size; 414 sc->sc_intr_buff = kmem_alloc(intr_size, KM_SLEEP); 415 error = usbd_open_pipe_intr(iface, intr_address, 416 USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, sc->sc_intr_buff, 417 intr_size, u3g_intr, 100); 418 if (error) { 419 aprint_error_dev(self, "cannot open interrupt pipe " 420 "(addr %d)\n", intr_address); 421 return; 422 } 423 } else { 424 sc->sc_intr_pipe = NULL; 425 sc->sc_intr_buff = NULL; 426 } 427 428 if (!pmf_device_register(self, NULL, NULL)) 429 aprint_error_dev(self, "couldn't establish power handler\n"); 430 } 431 432 static int 433 u3g_detach(device_t self, int flags) 434 { 435 struct u3g_softc *sc = device_private(self); 436 int rv; 437 438 if (sc->sc_dying) 439 return 0; 440 441 pmf_device_deregister(self); 442 443 for (size_t i = 0; i < sc->sc_ncom; i++) 444 if (sc->sc_com[i].c_dev != NULL) { 445 rv = config_detach(sc->sc_com[i].c_dev, flags); 446 if (rv != 0) { 447 aprint_verbose_dev(self, "Can't deallocate " 448 "port (%d)", rv); 449 } 450 } 451 452 if (sc->sc_intr_pipe != NULL) { 453 (void) usbd_abort_pipe(sc->sc_intr_pipe); 454 (void) usbd_close_pipe(sc->sc_intr_pipe); 455 sc->sc_intr_pipe = NULL; 456 } 457 if (sc->sc_intr_buff != NULL) { 458 kmem_free(sc->sc_intr_buff, sc->sc_intr_size); 459 sc->sc_intr_buff = NULL; 460 } 461 462 return 0; 463 } 464 465 static void 466 u3g_childdet(device_t self, device_t child) 467 { 468 struct u3g_softc *sc = device_private(self); 469 470 for (size_t i = 0; i < sc->sc_ncom; i++) 471 if (sc->sc_com[i].c_dev == child) 472 sc->sc_com[i].c_dev = NULL; 473 } 474 475 static int 476 u3g_activate(device_t self, enum devact act) 477 { 478 struct u3g_softc *sc = device_private(self); 479 int rv = 0; 480 481 switch (act) { 482 case DVACT_DEACTIVATE: 483 for (size_t i = 0; i < sc->sc_ncom; i++) 484 if (sc->sc_com[i].c_dev != NULL && 485 config_deactivate(sc->sc_com[i].c_dev) && rv == 0) 486 rv = -1; 487 else 488 rv = 0; 489 break; 490 491 default: 492 break; 493 } 494 495 return rv; 496 } 497 498 static void 499 u3g_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 500 { 501 struct u3g_softc *sc = (struct u3g_softc *)priv; 502 u_char *buf; 503 int portno = 0; /* XXX */ 504 struct u3g_com *com = &sc->sc_com[portno]; 505 506 if (sc->sc_dying) 507 return; 508 509 if (status != USBD_NORMAL_COMPLETION) { 510 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 511 return; 512 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); 513 return; 514 } 515 516 buf = sc->sc_intr_buff; 517 if (buf[0] == 0xa1 && buf[1] == 0x20) { 518 u_char msr; 519 520 msr = com->c_msr & ~(UMSR_DCD | UMSR_DSR | UMSR_RI); 521 522 if (buf[8] & U3G_INPIN_DCD) 523 msr |= UMSR_DCD; 524 525 if (buf[8] & U3G_INPIN_DSR) 526 msr |= UMSR_DSR; 527 528 if (buf[8] & U3G_INPIN_RI) 529 msr |= UMSR_RI; 530 531 if (msr != com->c_msr) { 532 com->c_msr = msr; 533 if (com->c_open) 534 ucom_status_change(device_private(com->c_dev)); 535 } 536 } 537 } 538 539 /*ARGSUSED*/ 540 static void 541 u3g_get_status(void *arg, int portno, u_char *lsr, u_char *msr) 542 { 543 struct u3g_softc *sc = arg; 544 545 if (lsr != NULL) 546 *lsr = 0; /* LSR isn't supported */ 547 if (msr != NULL) 548 *msr = sc->sc_com[portno].c_msr; 549 } 550 551 /*ARGSUSED*/ 552 static void 553 u3g_set(void *arg, int portno, int reg, int onoff) 554 { 555 struct u3g_softc *sc = arg; 556 usb_device_request_t req; 557 uint16_t mask, new_state; 558 usbd_status err; 559 struct u3g_com *com = &sc->sc_com[portno]; 560 561 if (sc->sc_dying) 562 return; 563 564 switch (reg) { 565 case UCOM_SET_DTR: 566 mask = U3G_OUTPIN_DTR; 567 break; 568 case UCOM_SET_RTS: 569 mask = U3G_OUTPIN_RTS; 570 break; 571 default: 572 return; 573 } 574 575 new_state = com->c_outpins & ~mask; 576 if (onoff) 577 new_state |= mask; 578 579 if (new_state == com->c_outpins) 580 return; 581 582 com->c_outpins = new_state; 583 584 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 585 req.bRequest = U3G_SET_PIN; 586 USETW(req.wValue, new_state); 587 USETW(req.wIndex, sc->sc_ifaceno); 588 USETW(req.wLength, 0); 589 590 err = usbd_do_request(sc->sc_udev, &req, 0); 591 if (err == USBD_STALLED) 592 usbd_clear_endpoint_stall(sc->sc_udev->ud_pipe0); 593 } 594 595 /*ARGSUSED*/ 596 static int 597 u3g_open(void *arg, int portno) 598 { 599 struct u3g_softc *sc = arg; 600 usb_device_request_t req; 601 usb_endpoint_descriptor_t *ed; 602 usb_interface_descriptor_t *id; 603 struct usbd_interface *ih; 604 usbd_status err; 605 struct u3g_com *com = &sc->sc_com[portno]; 606 int i, nin; 607 608 if (sc->sc_dying) 609 return 0; 610 611 err = usbd_device2interface_handle(sc->sc_udev, sc->sc_ifaceno, &ih); 612 if (err) 613 return EIO; 614 615 id = usbd_get_interface_descriptor(ih); 616 617 for (nin = i = 0; i < id->bNumEndpoints; i++) { 618 ed = usbd_interface2endpoint_descriptor(ih, i); 619 if (ed == NULL) 620 return EIO; 621 622 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 623 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK && 624 nin++ == portno) { 625 /* Issue ENDPOINT_HALT request */ 626 req.bmRequestType = UT_WRITE_ENDPOINT; 627 req.bRequest = UR_CLEAR_FEATURE; 628 USETW(req.wValue, UF_ENDPOINT_HALT); 629 USETW(req.wIndex, ed->bEndpointAddress); 630 USETW(req.wLength, 0); 631 err = usbd_do_request(sc->sc_udev, &req, 0); 632 if (err) 633 return EIO; 634 } 635 } 636 637 com->c_open = true; 638 com->c_purging = true; 639 getmicrotime(&com->c_purge_start); 640 641 return 0; 642 } 643 644 /*ARGSUSED*/ 645 static void 646 u3g_close(void *arg, int portno) 647 { 648 struct u3g_softc *sc = arg; 649 struct u3g_com *com = &sc->sc_com[portno]; 650 651 com->c_open = false; 652 } 653 654 /*ARGSUSED*/ 655 static void 656 u3g_read(void *arg, int portno, u_char **cpp, uint32_t *ccp) 657 { 658 struct u3g_softc *sc = arg; 659 struct timeval curr_tv, diff_tv; 660 struct u3g_com *com = &sc->sc_com[portno]; 661 662 /* 663 * If we're not purging input data following first open, do nothing. 664 */ 665 if (com->c_purging == false) 666 return; 667 668 /* 669 * Otherwise check if the purge timeout has expired 670 */ 671 getmicrotime(&curr_tv); 672 timersub(&curr_tv, &com->c_purge_start, &diff_tv); 673 674 if (diff_tv.tv_sec >= U3G_PURGE_SECS) { 675 /* Timeout expired. */ 676 com->c_purging = false; 677 } else { 678 /* Still purging. Adjust the caller's byte count. */ 679 *ccp = 0; 680 } 681 } 682 683 /*ARGSUSED*/ 684 static void 685 u3g_write(void *arg, int portno, u_char *to, u_char *from, uint32_t *count) 686 { 687 struct u3g_softc *sc = arg; 688 struct u3g_com *com = &sc->sc_com[portno]; 689 690 /* 691 * Stop purging as soon as the first data is written to the device. 692 */ 693 com->c_purging = false; 694 memcpy(to, from, *count); 695 } 696
Indexes created Tue Oct 14 00:09:49 GMT 2025