uslcom.c revision 211022
1/* $OpenBSD: uslcom.c,v 1.17 2007/11/24 10:52:12 jsg Exp $ */ 2 3#include <sys/cdefs.h> 4__FBSDID("$FreeBSD: head/sys/dev/usb/serial/uslcom.c 211022 2010-08-07 16:14:40Z gavin $"); 5 6/* 7 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org> 8 * 9 * Permission to use, copy, modify, and distribute this software for any 10 * purpose with or without fee is hereby granted, provided that the above 11 * copyright notice and this permission notice appear in all copies. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 */ 21 22#include <sys/stdint.h> 23#include <sys/stddef.h> 24#include <sys/param.h> 25#include <sys/queue.h> 26#include <sys/types.h> 27#include <sys/systm.h> 28#include <sys/kernel.h> 29#include <sys/bus.h> 30#include <sys/linker_set.h> 31#include <sys/module.h> 32#include <sys/lock.h> 33#include <sys/mutex.h> 34#include <sys/condvar.h> 35#include <sys/sysctl.h> 36#include <sys/sx.h> 37#include <sys/unistd.h> 38#include <sys/callout.h> 39#include <sys/malloc.h> 40#include <sys/priv.h> 41 42#include <dev/usb/usb.h> 43#include <dev/usb/usbdi.h> 44#include <dev/usb/usbdi_util.h> 45#include "usbdevs.h" 46 47#define USB_DEBUG_VAR uslcom_debug 48#include <dev/usb/usb_debug.h> 49#include <dev/usb/usb_process.h> 50 51#include <dev/usb/serial/usb_serial.h> 52 53#ifdef USB_DEBUG 54static int uslcom_debug = 0; 55 56SYSCTL_NODE(_hw_usb, OID_AUTO, uslcom, CTLFLAG_RW, 0, "USB uslcom"); 57SYSCTL_INT(_hw_usb_uslcom, OID_AUTO, debug, CTLFLAG_RW, 58 &uslcom_debug, 0, "Debug level"); 59#endif 60 61#define USLCOM_BULK_BUF_SIZE 1024 62#define USLCOM_CONFIG_INDEX 0 63#define USLCOM_IFACE_INDEX 0 64 65#define USLCOM_SET_DATA_BITS(x) ((x) << 8) 66 67#define USLCOM_WRITE 0x41 68#define USLCOM_READ 0xc1 69 70#define USLCOM_UART 0x00 71#define USLCOM_BAUD_RATE 0x01 72#define USLCOM_DATA 0x03 73#define USLCOM_BREAK 0x05 74#define USLCOM_CTRL 0x07 75 76#define USLCOM_UART_DISABLE 0x00 77#define USLCOM_UART_ENABLE 0x01 78 79#define USLCOM_CTRL_DTR_ON 0x0001 80#define USLCOM_CTRL_DTR_SET 0x0100 81#define USLCOM_CTRL_RTS_ON 0x0002 82#define USLCOM_CTRL_RTS_SET 0x0200 83#define USLCOM_CTRL_CTS 0x0010 84#define USLCOM_CTRL_DSR 0x0020 85#define USLCOM_CTRL_DCD 0x0080 86 87#define USLCOM_BAUD_REF 0x384000 88 89#define USLCOM_STOP_BITS_1 0x00 90#define USLCOM_STOP_BITS_2 0x02 91 92#define USLCOM_PARITY_NONE 0x00 93#define USLCOM_PARITY_ODD 0x10 94#define USLCOM_PARITY_EVEN 0x20 95 96#define USLCOM_PORT_NO 0xFFFF /* XXX think this should be 0 --hps */ 97 98#define USLCOM_BREAK_OFF 0x00 99#define USLCOM_BREAK_ON 0x01 100 101enum { 102 USLCOM_BULK_DT_WR, 103 USLCOM_BULK_DT_RD, 104 USLCOM_N_TRANSFER, 105}; 106 107struct uslcom_softc { 108 struct ucom_super_softc sc_super_ucom; 109 struct ucom_softc sc_ucom; 110 111 struct usb_xfer *sc_xfer[USLCOM_N_TRANSFER]; 112 struct usb_device *sc_udev; 113 struct mtx sc_mtx; 114 115 uint8_t sc_msr; 116 uint8_t sc_lsr; 117}; 118 119static device_probe_t uslcom_probe; 120static device_attach_t uslcom_attach; 121static device_detach_t uslcom_detach; 122 123static usb_callback_t uslcom_write_callback; 124static usb_callback_t uslcom_read_callback; 125 126static void uslcom_open(struct ucom_softc *); 127static void uslcom_close(struct ucom_softc *); 128static void uslcom_set_dtr(struct ucom_softc *, uint8_t); 129static void uslcom_set_rts(struct ucom_softc *, uint8_t); 130static void uslcom_set_break(struct ucom_softc *, uint8_t); 131static int uslcom_pre_param(struct ucom_softc *, struct termios *); 132static void uslcom_param(struct ucom_softc *, struct termios *); 133static void uslcom_get_status(struct ucom_softc *, uint8_t *, uint8_t *); 134static void uslcom_start_read(struct ucom_softc *); 135static void uslcom_stop_read(struct ucom_softc *); 136static void uslcom_start_write(struct ucom_softc *); 137static void uslcom_stop_write(struct ucom_softc *); 138static void uslcom_poll(struct ucom_softc *ucom); 139 140static const struct usb_config uslcom_config[USLCOM_N_TRANSFER] = { 141 142 [USLCOM_BULK_DT_WR] = { 143 .type = UE_BULK, 144 .endpoint = UE_ADDR_ANY, 145 .direction = UE_DIR_OUT, 146 .bufsize = USLCOM_BULK_BUF_SIZE, 147 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 148 .callback = &uslcom_write_callback, 149 }, 150 151 [USLCOM_BULK_DT_RD] = { 152 .type = UE_BULK, 153 .endpoint = UE_ADDR_ANY, 154 .direction = UE_DIR_IN, 155 .bufsize = USLCOM_BULK_BUF_SIZE, 156 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 157 .callback = &uslcom_read_callback, 158 }, 159}; 160 161static struct ucom_callback uslcom_callback = { 162 .ucom_cfg_open = &uslcom_open, 163 .ucom_cfg_close = &uslcom_close, 164 .ucom_cfg_get_status = &uslcom_get_status, 165 .ucom_cfg_set_dtr = &uslcom_set_dtr, 166 .ucom_cfg_set_rts = &uslcom_set_rts, 167 .ucom_cfg_set_break = &uslcom_set_break, 168 .ucom_cfg_param = &uslcom_param, 169 .ucom_pre_param = &uslcom_pre_param, 170 .ucom_start_read = &uslcom_start_read, 171 .ucom_stop_read = &uslcom_stop_read, 172 .ucom_start_write = &uslcom_start_write, 173 .ucom_stop_write = &uslcom_stop_write, 174 .ucom_poll = &uslcom_poll, 175}; 176 177static const struct usb_device_id uslcom_devs[] = { 178#define USLCOM_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 179 USLCOM_DEV(BALTECH, CARDREADER), 180 USLCOM_DEV(CLIPSAL, 5500PCU), 181 USLCOM_DEV(DATAAPEX, MULTICOM), 182 USLCOM_DEV(DELL, DW700), 183 USLCOM_DEV(DIGIANSWER, ZIGBEE802154), 184 USLCOM_DEV(DYNASTREAM, ANTDEVBOARD), 185 USLCOM_DEV(DYNASTREAM, ANTDEVBOARD2), 186 USLCOM_DEV(DYNASTREAM, ANT2USB), 187 USLCOM_DEV(ELV, USBI2C), 188 USLCOM_DEV(FOXCONN, PIRELLI_DP_L10), 189 USLCOM_DEV(GEMALTO, PROXPU), 190 USLCOM_DEV(JABLOTRON, PC60B), 191 USLCOM_DEV(MEI, CASHFLOW_SC), 192 USLCOM_DEV(MEI, S2000), 193 USLCOM_DEV(JABLOTRON, PC60B), 194 USLCOM_DEV(OWEN, AC4), 195 USLCOM_DEV(PHILIPS, ACE1001), 196 USLCOM_DEV(PLX, CA42), 197 USLCOM_DEV(SILABS, AEROCOMM), 198 USLCOM_DEV(SILABS, AMBER_AMB2560), 199 USLCOM_DEV(SILABS, ARGUSISP), 200 USLCOM_DEV(SILABS, ARKHAM_DS101_A), 201 USLCOM_DEV(SILABS, ARKHAM_DS101_M), 202 USLCOM_DEV(SILABS, ARYGON_MIFARE), 203 USLCOM_DEV(SILABS, AVIT_USB_TTL), 204 USLCOM_DEV(SILABS, BEI_VCP), 205 USLCOM_DEV(SILABS, BSM7DUSB), 206 USLCOM_DEV(SILABS, BURNSIDE), 207 USLCOM_DEV(SILABS, C2_EDGE_MODEM), 208 USLCOM_DEV(SILABS, CP2102), 209 USLCOM_DEV(SILABS, CP210X_2), 210 USLCOM_DEV(SILABS, CRUMB128), 211 USLCOM_DEV(SILABS, CYGNAL), 212 USLCOM_DEV(SILABS, CYGNAL_DEBUG), 213 USLCOM_DEV(SILABS, CYGNAL_GPS), 214 USLCOM_DEV(SILABS, DEGREE), 215 USLCOM_DEV(SILABS, EMS_C1007), 216 USLCOM_DEV(SILABS, HELICOM), 217 USLCOM_DEV(SILABS, IMS_USB_RS422), 218 USLCOM_DEV(SILABS, INFINITY_MIC), 219 USLCOM_DEV(SILABS, INSYS_MODEM), 220 USLCOM_DEV(SILABS, KYOCERA_GPS), 221 USLCOM_DEV(SILABS, LIPOWSKY_HARP), 222 USLCOM_DEV(SILABS, LIPOWSKY_JTAG), 223 USLCOM_DEV(SILABS, LIPOWSKY_LIN), 224 USLCOM_DEV(SILABS, MC35PU), 225 USLCOM_DEV(SILABS, MJS_TOSLINK), 226 USLCOM_DEV(SILABS, MSD_DASHHAWK), 227 USLCOM_DEV(SILABS, POLOLU), 228 USLCOM_DEV(SILABS, PROCYON_AVS), 229 USLCOM_DEV(SILABS, SB_PARAMOUNT_ME), 230 USLCOM_DEV(SILABS, SUUNTO), 231 USLCOM_DEV(SILABS, TAMSMASTER), 232 USLCOM_DEV(SILABS, TELEGESYS_ETRX2), 233 USLCOM_DEV(SILABS, TRACIENT), 234 USLCOM_DEV(SILABS, TRAQMATE), 235 USLCOM_DEV(SILABS, USBCOUNT50), 236 USLCOM_DEV(SILABS, USBPULSE100), 237 USLCOM_DEV(SILABS, USBSCOPE50), 238 USLCOM_DEV(SILABS, USBWAVE12), 239 USLCOM_DEV(SILABS, VSTABI), 240 USLCOM_DEV(SILABS, WAVIT), 241 USLCOM_DEV(SILABS, WMRBATT), 242 USLCOM_DEV(SILABS, WMRRIGBLASTER), 243 USLCOM_DEV(SILABS, WMRRIGTALK), 244 USLCOM_DEV(SILABS, ZEPHYR_BIO), 245 USLCOM_DEV(SILABS2, DCU11CLONE), 246 USLCOM_DEV(SILABS3, GPRS_MODEM), 247 USLCOM_DEV(SILABS4, 100EU_MODEM), 248 USLCOM_DEV(SYNTECH, CYPHERLAB100), 249 USLCOM_DEV(USI, MC60), 250 USLCOM_DEV(VAISALA, CABLE), 251 USLCOM_DEV(WAVESENSE, JAZZ), 252#undef USLCOM_DEV 253}; 254 255static device_method_t uslcom_methods[] = { 256 DEVMETHOD(device_probe, uslcom_probe), 257 DEVMETHOD(device_attach, uslcom_attach), 258 DEVMETHOD(device_detach, uslcom_detach), 259 {0, 0} 260}; 261 262static devclass_t uslcom_devclass; 263 264static driver_t uslcom_driver = { 265 .name = "uslcom", 266 .methods = uslcom_methods, 267 .size = sizeof(struct uslcom_softc), 268}; 269 270DRIVER_MODULE(uslcom, uhub, uslcom_driver, uslcom_devclass, NULL, 0); 271MODULE_DEPEND(uslcom, ucom, 1, 1, 1); 272MODULE_DEPEND(uslcom, usb, 1, 1, 1); 273MODULE_VERSION(uslcom, 1); 274 275static int 276uslcom_probe(device_t dev) 277{ 278 struct usb_attach_arg *uaa = device_get_ivars(dev); 279 280 DPRINTFN(11, "\n"); 281 282 if (uaa->usb_mode != USB_MODE_HOST) { 283 return (ENXIO); 284 } 285 if (uaa->info.bConfigIndex != USLCOM_CONFIG_INDEX) { 286 return (ENXIO); 287 } 288 if (uaa->info.bIfaceIndex != USLCOM_IFACE_INDEX) { 289 return (ENXIO); 290 } 291 return (usbd_lookup_id_by_uaa(uslcom_devs, sizeof(uslcom_devs), uaa)); 292} 293 294static int 295uslcom_attach(device_t dev) 296{ 297 struct usb_attach_arg *uaa = device_get_ivars(dev); 298 struct uslcom_softc *sc = device_get_softc(dev); 299 int error; 300 301 DPRINTFN(11, "\n"); 302 303 device_set_usb_desc(dev); 304 mtx_init(&sc->sc_mtx, "uslcom", NULL, MTX_DEF); 305 306 sc->sc_udev = uaa->device; 307 308 error = usbd_transfer_setup(uaa->device, 309 &uaa->info.bIfaceIndex, sc->sc_xfer, uslcom_config, 310 USLCOM_N_TRANSFER, sc, &sc->sc_mtx); 311 if (error) { 312 DPRINTF("one or more missing USB endpoints, " 313 "error=%s\n", usbd_errstr(error)); 314 goto detach; 315 } 316 /* clear stall at first run */ 317 mtx_lock(&sc->sc_mtx); 318 usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_WR]); 319 usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_RD]); 320 mtx_unlock(&sc->sc_mtx); 321 322 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 323 &uslcom_callback, &sc->sc_mtx); 324 if (error) { 325 goto detach; 326 } 327 return (0); 328 329detach: 330 uslcom_detach(dev); 331 return (ENXIO); 332} 333 334static int 335uslcom_detach(device_t dev) 336{ 337 struct uslcom_softc *sc = device_get_softc(dev); 338 339 DPRINTF("sc=%p\n", sc); 340 341 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 342 usbd_transfer_unsetup(sc->sc_xfer, USLCOM_N_TRANSFER); 343 mtx_destroy(&sc->sc_mtx); 344 345 return (0); 346} 347 348static void 349uslcom_open(struct ucom_softc *ucom) 350{ 351 struct uslcom_softc *sc = ucom->sc_parent; 352 struct usb_device_request req; 353 354 req.bmRequestType = USLCOM_WRITE; 355 req.bRequest = USLCOM_UART; 356 USETW(req.wValue, USLCOM_UART_ENABLE); 357 USETW(req.wIndex, USLCOM_PORT_NO); 358 USETW(req.wLength, 0); 359 360 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 361 &req, NULL, 0, 1000)) { 362 DPRINTF("UART enable failed (ignored)\n"); 363 } 364} 365 366static void 367uslcom_close(struct ucom_softc *ucom) 368{ 369 struct uslcom_softc *sc = ucom->sc_parent; 370 struct usb_device_request req; 371 372 req.bmRequestType = USLCOM_WRITE; 373 req.bRequest = USLCOM_UART; 374 USETW(req.wValue, USLCOM_UART_DISABLE); 375 USETW(req.wIndex, USLCOM_PORT_NO); 376 USETW(req.wLength, 0); 377 378 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 379 &req, NULL, 0, 1000)) { 380 DPRINTF("UART disable failed (ignored)\n"); 381 } 382} 383 384static void 385uslcom_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 386{ 387 struct uslcom_softc *sc = ucom->sc_parent; 388 struct usb_device_request req; 389 uint16_t ctl; 390 391 DPRINTF("onoff = %d\n", onoff); 392 393 ctl = onoff ? USLCOM_CTRL_DTR_ON : 0; 394 ctl |= USLCOM_CTRL_DTR_SET; 395 396 req.bmRequestType = USLCOM_WRITE; 397 req.bRequest = USLCOM_CTRL; 398 USETW(req.wValue, ctl); 399 USETW(req.wIndex, USLCOM_PORT_NO); 400 USETW(req.wLength, 0); 401 402 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 403 &req, NULL, 0, 1000)) { 404 DPRINTF("Setting DTR failed (ignored)\n"); 405 } 406} 407 408static void 409uslcom_set_rts(struct ucom_softc *ucom, uint8_t onoff) 410{ 411 struct uslcom_softc *sc = ucom->sc_parent; 412 struct usb_device_request req; 413 uint16_t ctl; 414 415 DPRINTF("onoff = %d\n", onoff); 416 417 ctl = onoff ? USLCOM_CTRL_RTS_ON : 0; 418 ctl |= USLCOM_CTRL_RTS_SET; 419 420 req.bmRequestType = USLCOM_WRITE; 421 req.bRequest = USLCOM_CTRL; 422 USETW(req.wValue, ctl); 423 USETW(req.wIndex, USLCOM_PORT_NO); 424 USETW(req.wLength, 0); 425 426 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 427 &req, NULL, 0, 1000)) { 428 DPRINTF("Setting DTR failed (ignored)\n"); 429 } 430} 431 432static int 433uslcom_pre_param(struct ucom_softc *ucom, struct termios *t) 434{ 435 if (t->c_ospeed <= 0 || t->c_ospeed > 921600) 436 return (EINVAL); 437 return (0); 438} 439 440static void 441uslcom_param(struct ucom_softc *ucom, struct termios *t) 442{ 443 struct uslcom_softc *sc = ucom->sc_parent; 444 struct usb_device_request req; 445 uint16_t data; 446 447 DPRINTF("\n"); 448 449 req.bmRequestType = USLCOM_WRITE; 450 req.bRequest = USLCOM_BAUD_RATE; 451 USETW(req.wValue, USLCOM_BAUD_REF / t->c_ospeed); 452 USETW(req.wIndex, USLCOM_PORT_NO); 453 USETW(req.wLength, 0); 454 455 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 456 &req, NULL, 0, 1000)) { 457 DPRINTF("Set baudrate failed (ignored)\n"); 458 } 459 460 if (t->c_cflag & CSTOPB) 461 data = USLCOM_STOP_BITS_2; 462 else 463 data = USLCOM_STOP_BITS_1; 464 if (t->c_cflag & PARENB) { 465 if (t->c_cflag & PARODD) 466 data |= USLCOM_PARITY_ODD; 467 else 468 data |= USLCOM_PARITY_EVEN; 469 } else 470 data |= USLCOM_PARITY_NONE; 471 switch (t->c_cflag & CSIZE) { 472 case CS5: 473 data |= USLCOM_SET_DATA_BITS(5); 474 break; 475 case CS6: 476 data |= USLCOM_SET_DATA_BITS(6); 477 break; 478 case CS7: 479 data |= USLCOM_SET_DATA_BITS(7); 480 break; 481 case CS8: 482 data |= USLCOM_SET_DATA_BITS(8); 483 break; 484 } 485 486 req.bmRequestType = USLCOM_WRITE; 487 req.bRequest = USLCOM_DATA; 488 USETW(req.wValue, data); 489 USETW(req.wIndex, USLCOM_PORT_NO); 490 USETW(req.wLength, 0); 491 492 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 493 &req, NULL, 0, 1000)) { 494 DPRINTF("Set format failed (ignored)\n"); 495 } 496 return; 497} 498 499static void 500uslcom_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 501{ 502 struct uslcom_softc *sc = ucom->sc_parent; 503 504 DPRINTF("\n"); 505 506 *lsr = sc->sc_lsr; 507 *msr = sc->sc_msr; 508} 509 510static void 511uslcom_set_break(struct ucom_softc *ucom, uint8_t onoff) 512{ 513 struct uslcom_softc *sc = ucom->sc_parent; 514 struct usb_device_request req; 515 uint16_t brk = onoff ? USLCOM_BREAK_ON : USLCOM_BREAK_OFF; 516 517 req.bmRequestType = USLCOM_WRITE; 518 req.bRequest = USLCOM_BREAK; 519 USETW(req.wValue, brk); 520 USETW(req.wIndex, USLCOM_PORT_NO); 521 USETW(req.wLength, 0); 522 523 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 524 &req, NULL, 0, 1000)) { 525 DPRINTF("Set BREAK failed (ignored)\n"); 526 } 527} 528 529static void 530uslcom_write_callback(struct usb_xfer *xfer, usb_error_t error) 531{ 532 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 533 struct usb_page_cache *pc; 534 uint32_t actlen; 535 536 switch (USB_GET_STATE(xfer)) { 537 case USB_ST_SETUP: 538 case USB_ST_TRANSFERRED: 539tr_setup: 540 pc = usbd_xfer_get_frame(xfer, 0); 541 if (ucom_get_data(&sc->sc_ucom, pc, 0, 542 USLCOM_BULK_BUF_SIZE, &actlen)) { 543 544 DPRINTF("actlen = %d\n", actlen); 545 546 usbd_xfer_set_frame_len(xfer, 0, actlen); 547 usbd_transfer_submit(xfer); 548 } 549 return; 550 551 default: /* Error */ 552 if (error != USB_ERR_CANCELLED) { 553 /* try to clear stall first */ 554 usbd_xfer_set_stall(xfer); 555 goto tr_setup; 556 } 557 return; 558 } 559} 560 561static void 562uslcom_read_callback(struct usb_xfer *xfer, usb_error_t error) 563{ 564 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 565 struct usb_page_cache *pc; 566 int actlen; 567 568 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 569 570 switch (USB_GET_STATE(xfer)) { 571 case USB_ST_TRANSFERRED: 572 pc = usbd_xfer_get_frame(xfer, 0); 573 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 574 575 case USB_ST_SETUP: 576tr_setup: 577 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 578 usbd_transfer_submit(xfer); 579 return; 580 581 default: /* Error */ 582 if (error != USB_ERR_CANCELLED) { 583 /* try to clear stall first */ 584 usbd_xfer_set_stall(xfer); 585 goto tr_setup; 586 } 587 return; 588 } 589} 590 591static void 592uslcom_start_read(struct ucom_softc *ucom) 593{ 594 struct uslcom_softc *sc = ucom->sc_parent; 595 596 /* start read endpoint */ 597 usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_RD]); 598} 599 600static void 601uslcom_stop_read(struct ucom_softc *ucom) 602{ 603 struct uslcom_softc *sc = ucom->sc_parent; 604 605 /* stop read endpoint */ 606 usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_RD]); 607} 608 609static void 610uslcom_start_write(struct ucom_softc *ucom) 611{ 612 struct uslcom_softc *sc = ucom->sc_parent; 613 614 usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_WR]); 615} 616 617static void 618uslcom_stop_write(struct ucom_softc *ucom) 619{ 620 struct uslcom_softc *sc = ucom->sc_parent; 621 622 usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_WR]); 623} 624 625static void 626uslcom_poll(struct ucom_softc *ucom) 627{ 628 struct uslcom_softc *sc = ucom->sc_parent; 629 usbd_transfer_poll(sc->sc_xfer, USLCOM_N_TRANSFER); 630} 631