1 /* $OpenBSD: uslcom.c,v 1.17 2007/11/24 10:52:12 jsg Exp $ */ 2 3 #include <sys/cdefs.h> 4 __FBSDID("$FreeBSD$"); 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/module.h> 31 #include <sys/lock.h> 32 #include <sys/mutex.h> 33 #include <sys/condvar.h> 34 #include <sys/sysctl.h> 35 #include <sys/sx.h> 36 #include <sys/unistd.h> 37 #include <sys/callout.h> 38 #include <sys/malloc.h> 39 #include <sys/priv.h> 40 41 #include <dev/usb/usb.h> 42 #include <dev/usb/usbdi.h> 43 #include <dev/usb/usbdi_util.h> 44 #include "usbdevs.h" 45 46 #define USB_DEBUG_VAR uslcom_debug 47 #include <dev/usb/usb_debug.h> 48 #include <dev/usb/usb_process.h> 49 50 #include <dev/usb/serial/usb_serial.h> 51 52 #ifdef USB_DEBUG 53 static int uslcom_debug = 0; 54 55 SYSCTL_NODE(_hw_usb, OID_AUTO, uslcom, CTLFLAG_RW, 0, "USB uslcom"); 56 SYSCTL_INT(_hw_usb_uslcom, OID_AUTO, debug, CTLFLAG_RW, 57 &uslcom_debug, 0, "Debug level"); 58 #endif 59 60 #define USLCOM_BULK_BUF_SIZE 1024 61 #define USLCOM_CONFIG_INDEX 0 62 #define USLCOM_IFACE_INDEX 0 63 64 #define USLCOM_SET_DATA_BITS(x) ((x) << 8) 65 66 #define USLCOM_WRITE 0x41 67 #define USLCOM_READ 0xc1 68 69 #define USLCOM_UART 0x00 70 #define USLCOM_BAUD_RATE 0x01 71 #define USLCOM_DATA 0x03 72 #define USLCOM_BREAK 0x05 73 #define USLCOM_CTRL 0x07 74 75 #define USLCOM_UART_DISABLE 0x00 76 #define USLCOM_UART_ENABLE 0x01 77 78 #define USLCOM_CTRL_DTR_ON 0x0001 79 #define USLCOM_CTRL_DTR_SET 0x0100 80 #define USLCOM_CTRL_RTS_ON 0x0002 81 #define USLCOM_CTRL_RTS_SET 0x0200 82 #define USLCOM_CTRL_CTS 0x0010 83 #define USLCOM_CTRL_DSR 0x0020 84 #define USLCOM_CTRL_DCD 0x0080 85 86 #define USLCOM_BAUD_REF 0x384000 87 88 #define USLCOM_STOP_BITS_1 0x00 89 #define USLCOM_STOP_BITS_2 0x02 90 91 #define USLCOM_PARITY_NONE 0x00 92 #define USLCOM_PARITY_ODD 0x10 93 #define USLCOM_PARITY_EVEN 0x20 94 95 #define USLCOM_PORT_NO 0xFFFF /* XXX think this should be 0 --hps */ 96 97 #define USLCOM_BREAK_OFF 0x00 98 #define USLCOM_BREAK_ON 0x01 99 100 enum { 101 USLCOM_BULK_DT_WR, 102 USLCOM_BULK_DT_RD, 103 USLCOM_N_TRANSFER, 104 }; 105 106 struct uslcom_softc { 107 struct ucom_super_softc sc_super_ucom; 108 struct ucom_softc sc_ucom; 109 110 struct usb_xfer *sc_xfer[USLCOM_N_TRANSFER]; 111 struct usb_device *sc_udev; 112 struct mtx sc_mtx; 113 114 uint8_t sc_msr; 115 uint8_t sc_lsr; 116 }; 117 118 static device_probe_t uslcom_probe; 119 static device_attach_t uslcom_attach; 120 static device_detach_t uslcom_detach; 121 122 static usb_callback_t uslcom_write_callback; 123 static usb_callback_t uslcom_read_callback; 124 125 static void uslcom_open(struct ucom_softc *); 126 static void uslcom_close(struct ucom_softc *); 127 static void uslcom_set_dtr(struct ucom_softc *, uint8_t); 128 static void uslcom_set_rts(struct ucom_softc *, uint8_t); 129 static void uslcom_set_break(struct ucom_softc *, uint8_t); 130 static int uslcom_pre_param(struct ucom_softc *, struct termios *); 131 static void uslcom_param(struct ucom_softc *, struct termios *); 132 static void uslcom_get_status(struct ucom_softc *, uint8_t *, uint8_t *); 133 static void uslcom_start_read(struct ucom_softc *); 134 static void uslcom_stop_read(struct ucom_softc *); 135 static void uslcom_start_write(struct ucom_softc *); 136 static void uslcom_stop_write(struct ucom_softc *); 137 static void uslcom_poll(struct ucom_softc *ucom); 138 139 static const struct usb_config uslcom_config[USLCOM_N_TRANSFER] = { 140 141 [USLCOM_BULK_DT_WR] = { 142 .type = UE_BULK, 143 .endpoint = UE_ADDR_ANY, 144 .direction = UE_DIR_OUT, 145 .bufsize = USLCOM_BULK_BUF_SIZE, 146 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 147 .callback = &uslcom_write_callback, 148 }, 149 150 [USLCOM_BULK_DT_RD] = { 151 .type = UE_BULK, 152 .endpoint = UE_ADDR_ANY, 153 .direction = UE_DIR_IN, 154 .bufsize = USLCOM_BULK_BUF_SIZE, 155 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 156 .callback = &uslcom_read_callback, 157 }, 158 }; 159 160 static struct ucom_callback uslcom_callback = { 161 .ucom_cfg_open = &uslcom_open, 162 .ucom_cfg_close = &uslcom_close, 163 .ucom_cfg_get_status = &uslcom_get_status, 164 .ucom_cfg_set_dtr = &uslcom_set_dtr, 165 .ucom_cfg_set_rts = &uslcom_set_rts, 166 .ucom_cfg_set_break = &uslcom_set_break, 167 .ucom_cfg_param = &uslcom_param, 168 .ucom_pre_param = &uslcom_pre_param, 169 .ucom_start_read = &uslcom_start_read, 170 .ucom_stop_read = &uslcom_stop_read, 171 .ucom_start_write = &uslcom_start_write, 172 .ucom_stop_write = &uslcom_stop_write, 173 .ucom_poll = &uslcom_poll, 174 }; 175 176 static const struct usb_device_id uslcom_devs[] = { 177 #define USLCOM_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 178 USLCOM_DEV(BALTECH, CARDREADER), 179 USLCOM_DEV(CLIPSAL, 5500PCU), 180 USLCOM_DEV(DATAAPEX, MULTICOM), 181 USLCOM_DEV(DELL, DW700), 182 USLCOM_DEV(DIGIANSWER, ZIGBEE802154), 183 USLCOM_DEV(DYNASTREAM, ANTDEVBOARD), 184 USLCOM_DEV(DYNASTREAM, ANTDEVBOARD2), 185 USLCOM_DEV(DYNASTREAM, ANT2USB), 186 USLCOM_DEV(ELV, USBI2C), 187 USLCOM_DEV(FOXCONN, PIRELLI_DP_L10), 188 USLCOM_DEV(FOXCONN, TCOM_TC_300), 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(RENESAS, RX610), 198 USLCOM_DEV(SILABS, AEROCOMM), 199 USLCOM_DEV(SILABS, AMBER_AMB2560), 200 USLCOM_DEV(SILABS, ARGUSISP), 201 USLCOM_DEV(SILABS, ARKHAM_DS101_A), 202 USLCOM_DEV(SILABS, ARKHAM_DS101_M), 203 USLCOM_DEV(SILABS, ARYGON_MIFARE), 204 USLCOM_DEV(SILABS, AVIT_USB_TTL), 205 USLCOM_DEV(SILABS, B_G_H3000), 206 USLCOM_DEV(SILABS, BALLUFF_RFID), 207 USLCOM_DEV(SILABS, BEI_VCP), 208 USLCOM_DEV(SILABS, BSM7DUSB), 209 USLCOM_DEV(SILABS, BURNSIDE), 210 USLCOM_DEV(SILABS, C2_EDGE_MODEM), 211 USLCOM_DEV(SILABS, CP2102), 212 USLCOM_DEV(SILABS, CP210X_2), 213 USLCOM_DEV(SILABS, CRUMB128), 214 USLCOM_DEV(SILABS, CYGNAL), 215 USLCOM_DEV(SILABS, CYGNAL_DEBUG), 216 USLCOM_DEV(SILABS, CYGNAL_GPS), 217 USLCOM_DEV(SILABS, DEGREE), 218 USLCOM_DEV(SILABS, EMS_C1007), 219 USLCOM_DEV(SILABS, HELICOM), 220 USLCOM_DEV(SILABS, IMS_USB_RS422), 221 USLCOM_DEV(SILABS, INFINITY_MIC), 222 USLCOM_DEV(SILABS, INSYS_MODEM), 223 USLCOM_DEV(SILABS, KYOCERA_GPS), 224 USLCOM_DEV(SILABS, LIPOWSKY_HARP), 225 USLCOM_DEV(SILABS, LIPOWSKY_JTAG), 226 USLCOM_DEV(SILABS, LIPOWSKY_LIN), 227 USLCOM_DEV(SILABS, MC35PU), 228 USLCOM_DEV(SILABS, MJS_TOSLINK), 229 USLCOM_DEV(SILABS, MSD_DASHHAWK), 230 USLCOM_DEV(SILABS, POLOLU), 231 USLCOM_DEV(SILABS, PROCYON_AVS), 232 USLCOM_DEV(SILABS, SB_PARAMOUNT_ME), 233 USLCOM_DEV(SILABS, SUUNTO), 234 USLCOM_DEV(SILABS, TAMSMASTER), 235 USLCOM_DEV(SILABS, TELEGESYS_ETRX2), 236 USLCOM_DEV(SILABS, TRACIENT), 237 USLCOM_DEV(SILABS, TRAQMATE), 238 USLCOM_DEV(SILABS, USBCOUNT50), 239 USLCOM_DEV(SILABS, USBPULSE100), 240 USLCOM_DEV(SILABS, USBSCOPE50), 241 USLCOM_DEV(SILABS, USBWAVE12), 242 USLCOM_DEV(SILABS, VSTABI), 243 USLCOM_DEV(SILABS, WAVIT), 244 USLCOM_DEV(SILABS, WMRBATT), 245 USLCOM_DEV(SILABS, WMRRIGBLASTER), 246 USLCOM_DEV(SILABS, WMRRIGTALK), 247 USLCOM_DEV(SILABS, ZEPHYR_BIO), 248 USLCOM_DEV(SILABS2, DCU11CLONE), 249 USLCOM_DEV(SILABS3, GPRS_MODEM), 250 USLCOM_DEV(SILABS4, 100EU_MODEM), 251 USLCOM_DEV(SYNTECH, CYPHERLAB100), 252 USLCOM_DEV(USI, MC60), 253 USLCOM_DEV(VAISALA, CABLE), 254 USLCOM_DEV(WAGO, SERVICECABLE), 255 USLCOM_DEV(WAVESENSE, JAZZ), 256 USLCOM_DEV(WIENERPLEINBAUS, PL512), 257 USLCOM_DEV(WIENERPLEINBAUS, RCM), 258 USLCOM_DEV(WIENERPLEINBAUS, MPOD), 259 USLCOM_DEV(WIENERPLEINBAUS, CML), 260 #undef USLCOM_DEV 261 }; 262 263 static device_method_t uslcom_methods[] = { 264 DEVMETHOD(device_probe, uslcom_probe), 265 DEVMETHOD(device_attach, uslcom_attach), 266 DEVMETHOD(device_detach, uslcom_detach), 267 {0, 0} 268 }; 269 270 static devclass_t uslcom_devclass; 271 272 static driver_t uslcom_driver = { 273 .name = "uslcom", 274 .methods = uslcom_methods, 275 .size = sizeof(struct uslcom_softc), 276 }; 277 278 DRIVER_MODULE(uslcom, uhub, uslcom_driver, uslcom_devclass, NULL, 0); 279 MODULE_DEPEND(uslcom, ucom, 1, 1, 1); 280 MODULE_DEPEND(uslcom, usb, 1, 1, 1); 281 MODULE_VERSION(uslcom, 1); 282 283 static int 284 uslcom_probe(device_t dev) 285 { 286 struct usb_attach_arg *uaa = device_get_ivars(dev); 287 288 DPRINTFN(11, "\n"); 289 290 if (uaa->usb_mode != USB_MODE_HOST) { 291 return (ENXIO); 292 } 293 if (uaa->info.bConfigIndex != USLCOM_CONFIG_INDEX) { 294 return (ENXIO); 295 } 296 if (uaa->info.bIfaceIndex != USLCOM_IFACE_INDEX) { 297 return (ENXIO); 298 } 299 return (usbd_lookup_id_by_uaa(uslcom_devs, sizeof(uslcom_devs), uaa)); 300 } 301 302 static int 303 uslcom_attach(device_t dev) 304 { 305 struct usb_attach_arg *uaa = device_get_ivars(dev); 306 struct uslcom_softc *sc = device_get_softc(dev); 307 int error; 308 309 DPRINTFN(11, "\n"); 310 311 device_set_usb_desc(dev); 312 mtx_init(&sc->sc_mtx, "uslcom", NULL, MTX_DEF); 313 314 sc->sc_udev = uaa->device; 315 316 error = usbd_transfer_setup(uaa->device, 317 &uaa->info.bIfaceIndex, sc->sc_xfer, uslcom_config, 318 USLCOM_N_TRANSFER, sc, &sc->sc_mtx); 319 if (error) { 320 DPRINTF("one or more missing USB endpoints, " 321 "error=%s\n", usbd_errstr(error)); 322 goto detach; 323 } 324 /* clear stall at first run */ 325 mtx_lock(&sc->sc_mtx); 326 usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_WR]); 327 usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_RD]); 328 mtx_unlock(&sc->sc_mtx); 329 330 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 331 &uslcom_callback, &sc->sc_mtx); 332 if (error) { 333 goto detach; 334 } 335 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 336 337 return (0); 338 339 detach: 340 uslcom_detach(dev); 341 return (ENXIO); 342 } 343 344 static int 345 uslcom_detach(device_t dev) 346 { 347 struct uslcom_softc *sc = device_get_softc(dev); 348 349 DPRINTF("sc=%p\n", sc); 350 351 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 352 usbd_transfer_unsetup(sc->sc_xfer, USLCOM_N_TRANSFER); 353 mtx_destroy(&sc->sc_mtx); 354 355 return (0); 356 } 357 358 static void 359 uslcom_open(struct ucom_softc *ucom) 360 { 361 struct uslcom_softc *sc = ucom->sc_parent; 362 struct usb_device_request req; 363 364 req.bmRequestType = USLCOM_WRITE; 365 req.bRequest = USLCOM_UART; 366 USETW(req.wValue, USLCOM_UART_ENABLE); 367 USETW(req.wIndex, USLCOM_PORT_NO); 368 USETW(req.wLength, 0); 369 370 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 371 &req, NULL, 0, 1000)) { 372 DPRINTF("UART enable failed (ignored)\n"); 373 } 374 } 375 376 static void 377 uslcom_close(struct ucom_softc *ucom) 378 { 379 struct uslcom_softc *sc = ucom->sc_parent; 380 struct usb_device_request req; 381 382 req.bmRequestType = USLCOM_WRITE; 383 req.bRequest = USLCOM_UART; 384 USETW(req.wValue, USLCOM_UART_DISABLE); 385 USETW(req.wIndex, USLCOM_PORT_NO); 386 USETW(req.wLength, 0); 387 388 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 389 &req, NULL, 0, 1000)) { 390 DPRINTF("UART disable failed (ignored)\n"); 391 } 392 } 393 394 static void 395 uslcom_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 396 { 397 struct uslcom_softc *sc = ucom->sc_parent; 398 struct usb_device_request req; 399 uint16_t ctl; 400 401 DPRINTF("onoff = %d\n", onoff); 402 403 ctl = onoff ? USLCOM_CTRL_DTR_ON : 0; 404 ctl |= USLCOM_CTRL_DTR_SET; 405 406 req.bmRequestType = USLCOM_WRITE; 407 req.bRequest = USLCOM_CTRL; 408 USETW(req.wValue, ctl); 409 USETW(req.wIndex, USLCOM_PORT_NO); 410 USETW(req.wLength, 0); 411 412 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 413 &req, NULL, 0, 1000)) { 414 DPRINTF("Setting DTR failed (ignored)\n"); 415 } 416 } 417 418 static void 419 uslcom_set_rts(struct ucom_softc *ucom, uint8_t onoff) 420 { 421 struct uslcom_softc *sc = ucom->sc_parent; 422 struct usb_device_request req; 423 uint16_t ctl; 424 425 DPRINTF("onoff = %d\n", onoff); 426 427 ctl = onoff ? USLCOM_CTRL_RTS_ON : 0; 428 ctl |= USLCOM_CTRL_RTS_SET; 429 430 req.bmRequestType = USLCOM_WRITE; 431 req.bRequest = USLCOM_CTRL; 432 USETW(req.wValue, ctl); 433 USETW(req.wIndex, USLCOM_PORT_NO); 434 USETW(req.wLength, 0); 435 436 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 437 &req, NULL, 0, 1000)) { 438 DPRINTF("Setting DTR failed (ignored)\n"); 439 } 440 } 441 442 static int 443 uslcom_pre_param(struct ucom_softc *ucom, struct termios *t) 444 { 445 if (t->c_ospeed <= 0 || t->c_ospeed > 921600) 446 return (EINVAL); 447 return (0); 448 } 449 450 static void 451 uslcom_param(struct ucom_softc *ucom, struct termios *t) 452 { 453 struct uslcom_softc *sc = ucom->sc_parent; 454 struct usb_device_request req; 455 uint16_t data; 456 457 DPRINTF("\n"); 458 459 req.bmRequestType = USLCOM_WRITE; 460 req.bRequest = USLCOM_BAUD_RATE; 461 USETW(req.wValue, USLCOM_BAUD_REF / t->c_ospeed); 462 USETW(req.wIndex, USLCOM_PORT_NO); 463 USETW(req.wLength, 0); 464 465 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 466 &req, NULL, 0, 1000)) { 467 DPRINTF("Set baudrate failed (ignored)\n"); 468 } 469 470 if (t->c_cflag & CSTOPB) 471 data = USLCOM_STOP_BITS_2; 472 else 473 data = USLCOM_STOP_BITS_1; 474 if (t->c_cflag & PARENB) { 475 if (t->c_cflag & PARODD) 476 data |= USLCOM_PARITY_ODD; 477 else 478 data |= USLCOM_PARITY_EVEN; 479 } else 480 data |= USLCOM_PARITY_NONE; 481 switch (t->c_cflag & CSIZE) { 482 case CS5: 483 data |= USLCOM_SET_DATA_BITS(5); 484 break; 485 case CS6: 486 data |= USLCOM_SET_DATA_BITS(6); 487 break; 488 case CS7: 489 data |= USLCOM_SET_DATA_BITS(7); 490 break; 491 case CS8: 492 data |= USLCOM_SET_DATA_BITS(8); 493 break; 494 } 495 496 req.bmRequestType = USLCOM_WRITE; 497 req.bRequest = USLCOM_DATA; 498 USETW(req.wValue, data); 499 USETW(req.wIndex, USLCOM_PORT_NO); 500 USETW(req.wLength, 0); 501 502 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 503 &req, NULL, 0, 1000)) { 504 DPRINTF("Set format failed (ignored)\n"); 505 } 506 return; 507 } 508 509 static void 510 uslcom_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 511 { 512 struct uslcom_softc *sc = ucom->sc_parent; 513 514 DPRINTF("\n"); 515 516 *lsr = sc->sc_lsr; 517 *msr = sc->sc_msr; 518 } 519 520 static void 521 uslcom_set_break(struct ucom_softc *ucom, uint8_t onoff) 522 { 523 struct uslcom_softc *sc = ucom->sc_parent; 524 struct usb_device_request req; 525 uint16_t brk = onoff ? USLCOM_BREAK_ON : USLCOM_BREAK_OFF; 526 527 req.bmRequestType = USLCOM_WRITE; 528 req.bRequest = USLCOM_BREAK; 529 USETW(req.wValue, brk); 530 USETW(req.wIndex, USLCOM_PORT_NO); 531 USETW(req.wLength, 0); 532 533 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 534 &req, NULL, 0, 1000)) { 535 DPRINTF("Set BREAK failed (ignored)\n"); 536 } 537 } 538 539 static void 540 uslcom_write_callback(struct usb_xfer *xfer, usb_error_t error) 541 { 542 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 543 struct usb_page_cache *pc; 544 uint32_t actlen; 545 546 switch (USB_GET_STATE(xfer)) { 547 case USB_ST_SETUP: 548 case USB_ST_TRANSFERRED: 549 tr_setup: 550 pc = usbd_xfer_get_frame(xfer, 0); 551 if (ucom_get_data(&sc->sc_ucom, pc, 0, 552 USLCOM_BULK_BUF_SIZE, &actlen)) { 553 554 DPRINTF("actlen = %d\n", actlen); 555 556 usbd_xfer_set_frame_len(xfer, 0, actlen); 557 usbd_transfer_submit(xfer); 558 } 559 return; 560 561 default: /* Error */ 562 if (error != USB_ERR_CANCELLED) { 563 /* try to clear stall first */ 564 usbd_xfer_set_stall(xfer); 565 goto tr_setup; 566 } 567 return; 568 } 569 } 570 571 static void 572 uslcom_read_callback(struct usb_xfer *xfer, usb_error_t error) 573 { 574 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 575 struct usb_page_cache *pc; 576 int actlen; 577 578 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 579 580 switch (USB_GET_STATE(xfer)) { 581 case USB_ST_TRANSFERRED: 582 pc = usbd_xfer_get_frame(xfer, 0); 583 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 584 585 case USB_ST_SETUP: 586 tr_setup: 587 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 588 usbd_transfer_submit(xfer); 589 return; 590 591 default: /* Error */ 592 if (error != USB_ERR_CANCELLED) { 593 /* try to clear stall first */ 594 usbd_xfer_set_stall(xfer); 595 goto tr_setup; 596 } 597 return; 598 } 599 } 600 601 static void 602 uslcom_start_read(struct ucom_softc *ucom) 603 { 604 struct uslcom_softc *sc = ucom->sc_parent; 605 606 /* start read endpoint */ 607 usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_RD]); 608 } 609 610 static void 611 uslcom_stop_read(struct ucom_softc *ucom) 612 { 613 struct uslcom_softc *sc = ucom->sc_parent; 614 615 /* stop read endpoint */ 616 usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_RD]); 617 } 618 619 static void 620 uslcom_start_write(struct ucom_softc *ucom) 621 { 622 struct uslcom_softc *sc = ucom->sc_parent; 623 624 usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_WR]); 625 } 626 627 static void 628 uslcom_stop_write(struct ucom_softc *ucom) 629 { 630 struct uslcom_softc *sc = ucom->sc_parent; 631 632 usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_WR]); 633 } 634 635 static void 636 uslcom_poll(struct ucom_softc *ucom) 637 { 638 struct uslcom_softc *sc = ucom->sc_parent; 639 usbd_transfer_poll(sc->sc_xfer, USLCOM_N_TRANSFER); 640 } 641