1 #include <sys/cdefs.h> 2 __FBSDID("$FreeBSD$"); 3 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause 6 * 7 * Copyright (c) 2003 Scott Long 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 /* 34 * Driver for the MCT (Magic Control Technology) USB-RS232 Converter. 35 * Based on the superb documentation from the linux mct_u232 driver by 36 * Wolfgang Grandeggar <wolfgang@cec.ch>. 37 * This device smells a lot like the Belkin F5U103, except that it has 38 * suffered some mild brain-damage. This driver is based off of the ubsa.c 39 * driver from Alexander Kabaev <kan@FreeBSD.org>. Merging the two together 40 * might be useful, though the subtle differences might lead to lots of 41 * #ifdef's. 42 */ 43 44 /* 45 * NOTE: all function names beginning like "umct_cfg_" can only 46 * be called from within the config thread function ! 47 */ 48 49 #include <sys/stdint.h> 50 #include <sys/stddef.h> 51 #include <sys/param.h> 52 #include <sys/queue.h> 53 #include <sys/types.h> 54 #include <sys/systm.h> 55 #include <sys/kernel.h> 56 #include <sys/bus.h> 57 #include <sys/module.h> 58 #include <sys/lock.h> 59 #include <sys/mutex.h> 60 #include <sys/condvar.h> 61 #include <sys/sysctl.h> 62 #include <sys/sx.h> 63 #include <sys/unistd.h> 64 #include <sys/callout.h> 65 #include <sys/malloc.h> 66 #include <sys/priv.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 #include "usbdevs.h" 72 73 #define USB_DEBUG_VAR usb_debug 74 #include <dev/usb/usb_debug.h> 75 #include <dev/usb/usb_process.h> 76 77 #include <dev/usb/serial/usb_serial.h> 78 79 /* The UMCT advertises the standard 8250 UART registers */ 80 #define UMCT_GET_MSR 2 /* Get Modem Status Register */ 81 #define UMCT_GET_MSR_SIZE 1 82 #define UMCT_GET_LCR 6 /* Get Line Control Register */ 83 #define UMCT_GET_LCR_SIZE 1 84 #define UMCT_SET_BAUD 5 /* Set the Baud Rate Divisor */ 85 #define UMCT_SET_BAUD_SIZE 4 86 #define UMCT_SET_LCR 7 /* Set Line Control Register */ 87 #define UMCT_SET_LCR_SIZE 1 88 #define UMCT_SET_MCR 10 /* Set Modem Control Register */ 89 #define UMCT_SET_MCR_SIZE 1 90 91 #define UMCT_MSR_CTS_CHG 0x01 92 #define UMCT_MSR_DSR_CHG 0x02 93 #define UMCT_MSR_RI_CHG 0x04 94 #define UMCT_MSR_CD_CHG 0x08 95 #define UMCT_MSR_CTS 0x10 96 #define UMCT_MSR_RTS 0x20 97 #define UMCT_MSR_RI 0x40 98 #define UMCT_MSR_CD 0x80 99 100 #define UMCT_INTR_INTERVAL 100 101 #define UMCT_IFACE_INDEX 0 102 #define UMCT_CONFIG_INDEX 0 103 104 enum { 105 UMCT_BULK_DT_WR, 106 UMCT_BULK_DT_RD, 107 UMCT_INTR_DT_RD, 108 UMCT_N_TRANSFER, 109 }; 110 111 struct umct_softc { 112 struct ucom_super_softc sc_super_ucom; 113 struct ucom_softc sc_ucom; 114 115 struct usb_device *sc_udev; 116 struct usb_xfer *sc_xfer[UMCT_N_TRANSFER]; 117 struct mtx sc_mtx; 118 119 uint32_t sc_unit; 120 121 uint16_t sc_obufsize; 122 123 uint8_t sc_lsr; 124 uint8_t sc_msr; 125 uint8_t sc_lcr; 126 uint8_t sc_mcr; 127 uint8_t sc_iface_no; 128 uint8_t sc_swap_cb; 129 }; 130 131 /* prototypes */ 132 133 static device_probe_t umct_probe; 134 static device_attach_t umct_attach; 135 static device_detach_t umct_detach; 136 static void umct_free_softc(struct umct_softc *); 137 138 static usb_callback_t umct_intr_callback; 139 static usb_callback_t umct_intr_callback_sub; 140 static usb_callback_t umct_read_callback; 141 static usb_callback_t umct_read_callback_sub; 142 static usb_callback_t umct_write_callback; 143 144 static void umct_cfg_do_request(struct umct_softc *sc, uint8_t request, 145 uint16_t len, uint32_t value); 146 static void umct_free(struct ucom_softc *); 147 static void umct_cfg_get_status(struct ucom_softc *, uint8_t *, 148 uint8_t *); 149 static void umct_cfg_set_break(struct ucom_softc *, uint8_t); 150 static void umct_cfg_set_dtr(struct ucom_softc *, uint8_t); 151 static void umct_cfg_set_rts(struct ucom_softc *, uint8_t); 152 static uint8_t umct_calc_baud(uint32_t); 153 static int umct_pre_param(struct ucom_softc *, struct termios *); 154 static void umct_cfg_param(struct ucom_softc *, struct termios *); 155 static void umct_start_read(struct ucom_softc *); 156 static void umct_stop_read(struct ucom_softc *); 157 static void umct_start_write(struct ucom_softc *); 158 static void umct_stop_write(struct ucom_softc *); 159 static void umct_poll(struct ucom_softc *ucom); 160 161 static const struct usb_config umct_config[UMCT_N_TRANSFER] = { 162 [UMCT_BULK_DT_WR] = { 163 .type = UE_BULK, 164 .endpoint = UE_ADDR_ANY, 165 .direction = UE_DIR_OUT, 166 .bufsize = 0, /* use wMaxPacketSize */ 167 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 168 .callback = &umct_write_callback, 169 }, 170 171 [UMCT_BULK_DT_RD] = { 172 .type = UE_INTERRUPT, 173 .endpoint = UE_ADDR_ANY, 174 .direction = UE_DIR_IN, 175 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 176 .bufsize = 0, /* use wMaxPacketSize */ 177 .callback = &umct_read_callback, 178 .ep_index = 0, /* first interrupt endpoint */ 179 }, 180 181 [UMCT_INTR_DT_RD] = { 182 .type = UE_INTERRUPT, 183 .endpoint = UE_ADDR_ANY, 184 .direction = UE_DIR_IN, 185 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 186 .bufsize = 0, /* use wMaxPacketSize */ 187 .callback = &umct_intr_callback, 188 .ep_index = 1, /* second interrupt endpoint */ 189 }, 190 }; 191 192 static const struct ucom_callback umct_callback = { 193 .ucom_cfg_get_status = &umct_cfg_get_status, 194 .ucom_cfg_set_dtr = &umct_cfg_set_dtr, 195 .ucom_cfg_set_rts = &umct_cfg_set_rts, 196 .ucom_cfg_set_break = &umct_cfg_set_break, 197 .ucom_cfg_param = &umct_cfg_param, 198 .ucom_pre_param = &umct_pre_param, 199 .ucom_start_read = &umct_start_read, 200 .ucom_stop_read = &umct_stop_read, 201 .ucom_start_write = &umct_start_write, 202 .ucom_stop_write = &umct_stop_write, 203 .ucom_poll = &umct_poll, 204 .ucom_free = &umct_free, 205 }; 206 207 static const STRUCT_USB_HOST_ID umct_devs[] = { 208 {USB_VPI(USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232, 0)}, 209 {USB_VPI(USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232, 0)}, 210 {USB_VPI(USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232, 0)}, 211 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109, 0)}, 212 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U409, 0)}, 213 }; 214 215 static device_method_t umct_methods[] = { 216 DEVMETHOD(device_probe, umct_probe), 217 DEVMETHOD(device_attach, umct_attach), 218 DEVMETHOD(device_detach, umct_detach), 219 DEVMETHOD_END 220 }; 221 222 static driver_t umct_driver = { 223 .name = "umct", 224 .methods = umct_methods, 225 .size = sizeof(struct umct_softc), 226 }; 227 228 DRIVER_MODULE(umct, uhub, umct_driver, NULL, NULL); 229 MODULE_DEPEND(umct, ucom, 1, 1, 1); 230 MODULE_DEPEND(umct, usb, 1, 1, 1); 231 MODULE_VERSION(umct, 1); 232 USB_PNP_HOST_INFO(umct_devs); 233 234 static int 235 umct_probe(device_t dev) 236 { 237 struct usb_attach_arg *uaa = device_get_ivars(dev); 238 239 if (uaa->usb_mode != USB_MODE_HOST) { 240 return (ENXIO); 241 } 242 if (uaa->info.bConfigIndex != UMCT_CONFIG_INDEX) { 243 return (ENXIO); 244 } 245 if (uaa->info.bIfaceIndex != UMCT_IFACE_INDEX) { 246 return (ENXIO); 247 } 248 return (usbd_lookup_id_by_uaa(umct_devs, sizeof(umct_devs), uaa)); 249 } 250 251 static int 252 umct_attach(device_t dev) 253 { 254 struct usb_attach_arg *uaa = device_get_ivars(dev); 255 struct umct_softc *sc = device_get_softc(dev); 256 int32_t error; 257 uint16_t maxp; 258 uint8_t iface_index; 259 260 sc->sc_udev = uaa->device; 261 sc->sc_unit = device_get_unit(dev); 262 263 device_set_usb_desc(dev); 264 mtx_init(&sc->sc_mtx, "umct", NULL, MTX_DEF); 265 ucom_ref(&sc->sc_super_ucom); 266 267 sc->sc_iface_no = uaa->info.bIfaceNum; 268 269 iface_index = UMCT_IFACE_INDEX; 270 error = usbd_transfer_setup(uaa->device, &iface_index, 271 sc->sc_xfer, umct_config, UMCT_N_TRANSFER, sc, &sc->sc_mtx); 272 273 if (error) { 274 device_printf(dev, "allocating USB " 275 "transfers failed\n"); 276 goto detach; 277 } 278 279 /* 280 * The real bulk-in endpoint is also marked as an interrupt. 281 * The only way to differentiate it from the real interrupt 282 * endpoint is to look at the wMaxPacketSize field. 283 */ 284 maxp = usbd_xfer_max_framelen(sc->sc_xfer[UMCT_BULK_DT_RD]); 285 if (maxp == 0x2) { 286 /* guessed wrong - switch around endpoints */ 287 288 struct usb_xfer *temp = sc->sc_xfer[UMCT_INTR_DT_RD]; 289 290 sc->sc_xfer[UMCT_INTR_DT_RD] = sc->sc_xfer[UMCT_BULK_DT_RD]; 291 sc->sc_xfer[UMCT_BULK_DT_RD] = temp; 292 sc->sc_swap_cb = 1; 293 } 294 295 sc->sc_obufsize = usbd_xfer_max_len(sc->sc_xfer[UMCT_BULK_DT_WR]); 296 297 if (uaa->info.idProduct == USB_PRODUCT_MCT_SITECOM_USB232) { 298 if (sc->sc_obufsize > 16) { 299 sc->sc_obufsize = 16; 300 } 301 } 302 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 303 &umct_callback, &sc->sc_mtx); 304 if (error) { 305 goto detach; 306 } 307 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 308 309 return (0); /* success */ 310 311 detach: 312 umct_detach(dev); 313 return (ENXIO); /* failure */ 314 } 315 316 static int 317 umct_detach(device_t dev) 318 { 319 struct umct_softc *sc = device_get_softc(dev); 320 321 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 322 usbd_transfer_unsetup(sc->sc_xfer, UMCT_N_TRANSFER); 323 324 device_claim_softc(dev); 325 326 umct_free_softc(sc); 327 328 return (0); 329 } 330 331 UCOM_UNLOAD_DRAIN(umct); 332 333 static void 334 umct_free_softc(struct umct_softc *sc) 335 { 336 if (ucom_unref(&sc->sc_super_ucom)) { 337 mtx_destroy(&sc->sc_mtx); 338 device_free_softc(sc); 339 } 340 } 341 342 static void 343 umct_free(struct ucom_softc *ucom) 344 { 345 umct_free_softc(ucom->sc_parent); 346 } 347 348 static void 349 umct_cfg_do_request(struct umct_softc *sc, uint8_t request, 350 uint16_t len, uint32_t value) 351 { 352 struct usb_device_request req; 353 usb_error_t err; 354 uint8_t temp[4]; 355 356 if (len > 4) 357 len = 4; 358 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 359 req.bRequest = request; 360 USETW(req.wValue, 0); 361 req.wIndex[0] = sc->sc_iface_no; 362 req.wIndex[1] = 0; 363 USETW(req.wLength, len); 364 USETDW(temp, value); 365 366 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 367 &req, temp, 0, 1000); 368 if (err) { 369 DPRINTFN(0, "device request failed, err=%s " 370 "(ignored)\n", usbd_errstr(err)); 371 } 372 return; 373 } 374 375 static void 376 umct_intr_callback_sub(struct usb_xfer *xfer, usb_error_t error) 377 { 378 struct umct_softc *sc = usbd_xfer_softc(xfer); 379 struct usb_page_cache *pc; 380 uint8_t buf[2]; 381 int actlen; 382 383 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 384 385 switch (USB_GET_STATE(xfer)) { 386 case USB_ST_TRANSFERRED: 387 if (actlen < 2) { 388 DPRINTF("too short message\n"); 389 goto tr_setup; 390 } 391 pc = usbd_xfer_get_frame(xfer, 0); 392 usbd_copy_out(pc, 0, buf, sizeof(buf)); 393 394 /* 395 * MSR bits need translation from ns16550 to SER_* values. 396 * LSR bits are ns16550 in hardware and ucom. 397 */ 398 sc->sc_msr = 0; 399 if (buf[0] & UMCT_MSR_CTS) 400 sc->sc_msr |= SER_CTS; 401 if (buf[0] & UMCT_MSR_CD) 402 sc->sc_msr |= SER_DCD; 403 if (buf[0] & UMCT_MSR_RI) 404 sc->sc_msr |= SER_RI; 405 if (buf[0] & UMCT_MSR_RTS) 406 sc->sc_msr |= SER_DSR; 407 sc->sc_lsr = buf[1]; 408 409 ucom_status_change(&sc->sc_ucom); 410 /* FALLTHROUGH */ 411 case USB_ST_SETUP: 412 tr_setup: 413 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 414 usbd_transfer_submit(xfer); 415 return; 416 417 default: /* Error */ 418 if (error != USB_ERR_CANCELLED) { 419 /* try to clear stall first */ 420 usbd_xfer_set_stall(xfer); 421 goto tr_setup; 422 } 423 return; 424 } 425 } 426 427 static void 428 umct_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 429 { 430 struct umct_softc *sc = ucom->sc_parent; 431 432 *lsr = sc->sc_lsr; 433 *msr = sc->sc_msr; 434 } 435 436 static void 437 umct_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 438 { 439 struct umct_softc *sc = ucom->sc_parent; 440 441 if (onoff) 442 sc->sc_lcr |= 0x40; 443 else 444 sc->sc_lcr &= ~0x40; 445 446 umct_cfg_do_request(sc, UMCT_SET_LCR, UMCT_SET_LCR_SIZE, sc->sc_lcr); 447 } 448 449 static void 450 umct_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 451 { 452 struct umct_softc *sc = ucom->sc_parent; 453 454 if (onoff) 455 sc->sc_mcr |= 0x01; 456 else 457 sc->sc_mcr &= ~0x01; 458 459 umct_cfg_do_request(sc, UMCT_SET_MCR, UMCT_SET_MCR_SIZE, sc->sc_mcr); 460 } 461 462 static void 463 umct_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 464 { 465 struct umct_softc *sc = ucom->sc_parent; 466 467 if (onoff) 468 sc->sc_mcr |= 0x02; 469 else 470 sc->sc_mcr &= ~0x02; 471 472 umct_cfg_do_request(sc, UMCT_SET_MCR, UMCT_SET_MCR_SIZE, sc->sc_mcr); 473 } 474 475 static uint8_t 476 umct_calc_baud(uint32_t baud) 477 { 478 switch (baud) { 479 case B300: 480 return (0x1); 481 case B600: 482 return (0x2); 483 case B1200: 484 return (0x3); 485 case B2400: 486 return (0x4); 487 case B4800: 488 return (0x6); 489 case B9600: 490 return (0x8); 491 case B19200: 492 return (0x9); 493 case B38400: 494 return (0xa); 495 case B57600: 496 return (0xb); 497 case 115200: 498 return (0xc); 499 case B0: 500 default: 501 break; 502 } 503 return (0x0); 504 } 505 506 static int 507 umct_pre_param(struct ucom_softc *ucom, struct termios *t) 508 { 509 return (0); /* we accept anything */ 510 } 511 512 static void 513 umct_cfg_param(struct ucom_softc *ucom, struct termios *t) 514 { 515 struct umct_softc *sc = ucom->sc_parent; 516 uint32_t value; 517 518 value = umct_calc_baud(t->c_ospeed); 519 umct_cfg_do_request(sc, UMCT_SET_BAUD, UMCT_SET_BAUD_SIZE, value); 520 521 value = (sc->sc_lcr & 0x40); 522 523 switch (t->c_cflag & CSIZE) { 524 case CS5: 525 value |= 0x0; 526 break; 527 case CS6: 528 value |= 0x1; 529 break; 530 case CS7: 531 value |= 0x2; 532 break; 533 default: 534 case CS8: 535 value |= 0x3; 536 break; 537 } 538 539 value |= (t->c_cflag & CSTOPB) ? 0x4 : 0; 540 if (t->c_cflag & PARENB) { 541 value |= 0x8; 542 value |= (t->c_cflag & PARODD) ? 0x0 : 0x10; 543 } 544 /* 545 * XXX There doesn't seem to be a way to tell the device 546 * to use flow control. 547 */ 548 549 sc->sc_lcr = value; 550 umct_cfg_do_request(sc, UMCT_SET_LCR, UMCT_SET_LCR_SIZE, value); 551 } 552 553 static void 554 umct_start_read(struct ucom_softc *ucom) 555 { 556 struct umct_softc *sc = ucom->sc_parent; 557 558 /* start interrupt endpoint */ 559 usbd_transfer_start(sc->sc_xfer[UMCT_INTR_DT_RD]); 560 561 /* start read endpoint */ 562 usbd_transfer_start(sc->sc_xfer[UMCT_BULK_DT_RD]); 563 } 564 565 static void 566 umct_stop_read(struct ucom_softc *ucom) 567 { 568 struct umct_softc *sc = ucom->sc_parent; 569 570 /* stop interrupt endpoint */ 571 usbd_transfer_stop(sc->sc_xfer[UMCT_INTR_DT_RD]); 572 573 /* stop read endpoint */ 574 usbd_transfer_stop(sc->sc_xfer[UMCT_BULK_DT_RD]); 575 } 576 577 static void 578 umct_start_write(struct ucom_softc *ucom) 579 { 580 struct umct_softc *sc = ucom->sc_parent; 581 582 usbd_transfer_start(sc->sc_xfer[UMCT_BULK_DT_WR]); 583 } 584 585 static void 586 umct_stop_write(struct ucom_softc *ucom) 587 { 588 struct umct_softc *sc = ucom->sc_parent; 589 590 usbd_transfer_stop(sc->sc_xfer[UMCT_BULK_DT_WR]); 591 } 592 593 static void 594 umct_read_callback(struct usb_xfer *xfer, usb_error_t error) 595 { 596 struct umct_softc *sc = usbd_xfer_softc(xfer); 597 598 if (sc->sc_swap_cb) 599 umct_intr_callback_sub(xfer, error); 600 else 601 umct_read_callback_sub(xfer, error); 602 } 603 604 static void 605 umct_intr_callback(struct usb_xfer *xfer, usb_error_t error) 606 { 607 struct umct_softc *sc = usbd_xfer_softc(xfer); 608 609 if (sc->sc_swap_cb) 610 umct_read_callback_sub(xfer, error); 611 else 612 umct_intr_callback_sub(xfer, error); 613 } 614 615 static void 616 umct_write_callback(struct usb_xfer *xfer, usb_error_t error) 617 { 618 struct umct_softc *sc = usbd_xfer_softc(xfer); 619 struct usb_page_cache *pc; 620 uint32_t actlen; 621 622 switch (USB_GET_STATE(xfer)) { 623 case USB_ST_SETUP: 624 case USB_ST_TRANSFERRED: 625 tr_setup: 626 pc = usbd_xfer_get_frame(xfer, 0); 627 if (ucom_get_data(&sc->sc_ucom, pc, 0, 628 sc->sc_obufsize, &actlen)) { 629 usbd_xfer_set_frame_len(xfer, 0, actlen); 630 usbd_transfer_submit(xfer); 631 } 632 return; 633 634 default: /* Error */ 635 if (error != USB_ERR_CANCELLED) { 636 /* try to clear stall first */ 637 usbd_xfer_set_stall(xfer); 638 goto tr_setup; 639 } 640 return; 641 } 642 } 643 644 static void 645 umct_read_callback_sub(struct usb_xfer *xfer, usb_error_t error) 646 { 647 struct umct_softc *sc = usbd_xfer_softc(xfer); 648 struct usb_page_cache *pc; 649 int actlen; 650 651 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 652 653 switch (USB_GET_STATE(xfer)) { 654 case USB_ST_TRANSFERRED: 655 pc = usbd_xfer_get_frame(xfer, 0); 656 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 657 658 case USB_ST_SETUP: 659 tr_setup: 660 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 661 usbd_transfer_submit(xfer); 662 return; 663 664 default: /* Error */ 665 if (error != USB_ERR_CANCELLED) { 666 /* try to clear stall first */ 667 usbd_xfer_set_stall(xfer); 668 goto tr_setup; 669 } 670 return; 671 } 672 } 673 674 static void 675 umct_poll(struct ucom_softc *ucom) 676 { 677 struct umct_softc *sc = ucom->sc_parent; 678 usbd_transfer_poll(sc->sc_xfer, UMCT_N_TRANSFER); 679 } 680