ubsa.c revision 263687
1/*- 2 * Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/10/sys/dev/usb/serial/ubsa.c 263687 2014-03-24 13:48:04Z emaste $"); 29/*- 30 * Copyright (c) 2001 The NetBSD Foundation, Inc. 31 * All rights reserved. 32 * 33 * This code is derived from software contributed to The NetBSD Foundation 34 * by Ichiro FUKUHARA (ichiro@ichiro.org). 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 46 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 47 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 48 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 49 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 50 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 51 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 52 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 53 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 54 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 55 * POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58#include <sys/stdint.h> 59#include <sys/stddef.h> 60#include <sys/param.h> 61#include <sys/queue.h> 62#include <sys/types.h> 63#include <sys/systm.h> 64#include <sys/kernel.h> 65#include <sys/bus.h> 66#include <sys/module.h> 67#include <sys/lock.h> 68#include <sys/mutex.h> 69#include <sys/condvar.h> 70#include <sys/sysctl.h> 71#include <sys/sx.h> 72#include <sys/unistd.h> 73#include <sys/callout.h> 74#include <sys/malloc.h> 75#include <sys/priv.h> 76 77#include <dev/usb/usb.h> 78#include <dev/usb/usbdi.h> 79#include <dev/usb/usbdi_util.h> 80#include "usbdevs.h" 81 82#define USB_DEBUG_VAR ubsa_debug 83#include <dev/usb/usb_debug.h> 84#include <dev/usb/usb_process.h> 85 86#include <dev/usb/serial/usb_serial.h> 87 88#ifdef USB_DEBUG 89static int ubsa_debug = 0; 90 91static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa"); 92SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW, 93 &ubsa_debug, 0, "ubsa debug level"); 94#endif 95 96#define UBSA_BSIZE 1024 /* bytes */ 97 98#define UBSA_CONFIG_INDEX 0 99#define UBSA_IFACE_INDEX 0 100 101#define UBSA_REG_BAUDRATE 0x00 102#define UBSA_REG_STOP_BITS 0x01 103#define UBSA_REG_DATA_BITS 0x02 104#define UBSA_REG_PARITY 0x03 105#define UBSA_REG_DTR 0x0A 106#define UBSA_REG_RTS 0x0B 107#define UBSA_REG_BREAK 0x0C 108#define UBSA_REG_FLOW_CTRL 0x10 109 110#define UBSA_PARITY_NONE 0x00 111#define UBSA_PARITY_EVEN 0x01 112#define UBSA_PARITY_ODD 0x02 113#define UBSA_PARITY_MARK 0x03 114#define UBSA_PARITY_SPACE 0x04 115 116#define UBSA_FLOW_NONE 0x0000 117#define UBSA_FLOW_OCTS 0x0001 118#define UBSA_FLOW_ODSR 0x0002 119#define UBSA_FLOW_IDSR 0x0004 120#define UBSA_FLOW_IDTR 0x0008 121#define UBSA_FLOW_IRTS 0x0010 122#define UBSA_FLOW_ORTS 0x0020 123#define UBSA_FLOW_UNKNOWN 0x0040 124#define UBSA_FLOW_OXON 0x0080 125#define UBSA_FLOW_IXON 0x0100 126 127/* line status register */ 128#define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */ 129#define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */ 130#define UBSA_LSR_BI 0x10 /* Break detected */ 131#define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */ 132#define UBSA_LSR_PE 0x04 /* Parity error */ 133#define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */ 134#define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */ 135#define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */ 136 137/* modem status register */ 138/* All deltas are from the last read of the MSR. */ 139#define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */ 140#define UBSA_MSR_RI 0x40 /* Current Ring Indicator */ 141#define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */ 142#define UBSA_MSR_CTS 0x10 /* Current Clear to Send */ 143#define UBSA_MSR_DDCD 0x08 /* DCD has changed state */ 144#define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */ 145#define UBSA_MSR_DDSR 0x02 /* DSR has changed state */ 146#define UBSA_MSR_DCTS 0x01 /* CTS has changed state */ 147 148enum { 149 UBSA_BULK_DT_WR, 150 UBSA_BULK_DT_RD, 151 UBSA_INTR_DT_RD, 152 UBSA_N_TRANSFER, 153}; 154 155struct ubsa_softc { 156 struct ucom_super_softc sc_super_ucom; 157 struct ucom_softc sc_ucom; 158 159 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER]; 160 struct usb_device *sc_udev; 161 struct mtx sc_mtx; 162 163 uint8_t sc_iface_no; /* interface number */ 164 uint8_t sc_iface_index; /* interface index */ 165 uint8_t sc_lsr; /* local status register */ 166 uint8_t sc_msr; /* UBSA status register */ 167}; 168 169static device_probe_t ubsa_probe; 170static device_attach_t ubsa_attach; 171static device_detach_t ubsa_detach; 172static void ubsa_free_softc(struct ubsa_softc *); 173 174static usb_callback_t ubsa_write_callback; 175static usb_callback_t ubsa_read_callback; 176static usb_callback_t ubsa_intr_callback; 177 178static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 179static void ubsa_free(struct ucom_softc *); 180static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 181static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 182static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 183static int ubsa_pre_param(struct ucom_softc *, struct termios *); 184static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 185static void ubsa_start_read(struct ucom_softc *); 186static void ubsa_stop_read(struct ucom_softc *); 187static void ubsa_start_write(struct ucom_softc *); 188static void ubsa_stop_write(struct ucom_softc *); 189static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 190 uint8_t *); 191static void ubsa_poll(struct ucom_softc *ucom); 192 193static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 194 195 [UBSA_BULK_DT_WR] = { 196 .type = UE_BULK, 197 .endpoint = UE_ADDR_ANY, 198 .direction = UE_DIR_OUT, 199 .bufsize = UBSA_BSIZE, /* bytes */ 200 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 201 .callback = &ubsa_write_callback, 202 }, 203 204 [UBSA_BULK_DT_RD] = { 205 .type = UE_BULK, 206 .endpoint = UE_ADDR_ANY, 207 .direction = UE_DIR_IN, 208 .bufsize = UBSA_BSIZE, /* bytes */ 209 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 210 .callback = &ubsa_read_callback, 211 }, 212 213 [UBSA_INTR_DT_RD] = { 214 .type = UE_INTERRUPT, 215 .endpoint = UE_ADDR_ANY, 216 .direction = UE_DIR_IN, 217 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 218 .bufsize = 0, /* use wMaxPacketSize */ 219 .callback = &ubsa_intr_callback, 220 }, 221}; 222 223static const struct ucom_callback ubsa_callback = { 224 .ucom_cfg_get_status = &ubsa_cfg_get_status, 225 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 226 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 227 .ucom_cfg_set_break = &ubsa_cfg_set_break, 228 .ucom_cfg_param = &ubsa_cfg_param, 229 .ucom_pre_param = &ubsa_pre_param, 230 .ucom_start_read = &ubsa_start_read, 231 .ucom_stop_read = &ubsa_stop_read, 232 .ucom_start_write = &ubsa_start_write, 233 .ucom_stop_write = &ubsa_stop_write, 234 .ucom_poll = &ubsa_poll, 235 .ucom_free = &ubsa_free, 236}; 237 238static const STRUCT_USB_HOST_ID ubsa_devs[] = { 239 /* AnyData ADU-500A */ 240 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 241 /* AnyData ADU-E100A/H */ 242 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 243 /* Axesstel MV100H */ 244 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 245 /* BELKIN F5U103 */ 246 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 247 /* BELKIN F5U120 */ 248 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 249 /* GoHubs GO-COM232 */ 250 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 251 /* GoHubs GO-COM232 */ 252 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 253 /* Peracom */ 254 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 255}; 256 257static device_method_t ubsa_methods[] = { 258 DEVMETHOD(device_probe, ubsa_probe), 259 DEVMETHOD(device_attach, ubsa_attach), 260 DEVMETHOD(device_detach, ubsa_detach), 261 DEVMETHOD_END 262}; 263 264static devclass_t ubsa_devclass; 265 266static driver_t ubsa_driver = { 267 .name = "ubsa", 268 .methods = ubsa_methods, 269 .size = sizeof(struct ubsa_softc), 270}; 271 272DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 273MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 274MODULE_DEPEND(ubsa, usb, 1, 1, 1); 275MODULE_VERSION(ubsa, 1); 276 277static int 278ubsa_probe(device_t dev) 279{ 280 struct usb_attach_arg *uaa = device_get_ivars(dev); 281 282 if (uaa->usb_mode != USB_MODE_HOST) { 283 return (ENXIO); 284 } 285 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 286 return (ENXIO); 287 } 288 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 289 return (ENXIO); 290 } 291 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 292} 293 294static int 295ubsa_attach(device_t dev) 296{ 297 struct usb_attach_arg *uaa = device_get_ivars(dev); 298 struct ubsa_softc *sc = device_get_softc(dev); 299 int error; 300 301 DPRINTF("sc=%p\n", sc); 302 303 device_set_usb_desc(dev); 304 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 305 ucom_ref(&sc->sc_super_ucom); 306 307 sc->sc_udev = uaa->device; 308 sc->sc_iface_no = uaa->info.bIfaceNum; 309 sc->sc_iface_index = UBSA_IFACE_INDEX; 310 311 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 312 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx); 313 314 if (error) { 315 DPRINTF("could not allocate all pipes\n"); 316 goto detach; 317 } 318 /* clear stall at first run */ 319 mtx_lock(&sc->sc_mtx); 320 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 321 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 322 mtx_unlock(&sc->sc_mtx); 323 324 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 325 &ubsa_callback, &sc->sc_mtx); 326 if (error) { 327 DPRINTF("ucom_attach failed\n"); 328 goto detach; 329 } 330 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 331 332 return (0); 333 334detach: 335 ubsa_detach(dev); 336 return (ENXIO); 337} 338 339static int 340ubsa_detach(device_t dev) 341{ 342 struct ubsa_softc *sc = device_get_softc(dev); 343 344 DPRINTF("sc=%p\n", sc); 345 346 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 347 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 348 349 device_claim_softc(dev); 350 351 ubsa_free_softc(sc); 352 353 return (0); 354} 355 356UCOM_UNLOAD_DRAIN(ubsa); 357 358static void 359ubsa_free_softc(struct ubsa_softc *sc) 360{ 361 if (ucom_unref(&sc->sc_super_ucom)) { 362 mtx_destroy(&sc->sc_mtx); 363 device_free_softc(sc); 364 } 365} 366 367static void 368ubsa_free(struct ucom_softc *ucom) 369{ 370 ubsa_free_softc(ucom->sc_parent); 371} 372 373static void 374ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 375{ 376 struct usb_device_request req; 377 usb_error_t err; 378 379 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 380 req.bRequest = index; 381 USETW(req.wValue, value); 382 req.wIndex[0] = sc->sc_iface_no; 383 req.wIndex[1] = 0; 384 USETW(req.wLength, 0); 385 386 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 387 &req, NULL, 0, 1000); 388 if (err) { 389 DPRINTFN(0, "device request failed, err=%s " 390 "(ignored)\n", usbd_errstr(err)); 391 } 392} 393 394static void 395ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 396{ 397 struct ubsa_softc *sc = ucom->sc_parent; 398 399 DPRINTF("onoff = %d\n", onoff); 400 401 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 402} 403 404static void 405ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 406{ 407 struct ubsa_softc *sc = ucom->sc_parent; 408 409 DPRINTF("onoff = %d\n", onoff); 410 411 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 412} 413 414static void 415ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 416{ 417 struct ubsa_softc *sc = ucom->sc_parent; 418 419 DPRINTF("onoff = %d\n", onoff); 420 421 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 422} 423 424static int 425ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 426{ 427 428 DPRINTF("sc = %p\n", ucom->sc_parent); 429 430 switch (t->c_ospeed) { 431 case B0: 432 case B300: 433 case B600: 434 case B1200: 435 case B2400: 436 case B4800: 437 case B9600: 438 case B19200: 439 case B38400: 440 case B57600: 441 case B115200: 442 case B230400: 443 break; 444 default: 445 return (EINVAL); 446 } 447 return (0); 448} 449 450static void 451ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 452{ 453 struct ubsa_softc *sc = ucom->sc_parent; 454 uint16_t value = 0; 455 456 DPRINTF("sc = %p\n", sc); 457 458 switch (t->c_ospeed) { 459 case B0: 460 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 461 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 462 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 463 break; 464 case B300: 465 case B600: 466 case B1200: 467 case B2400: 468 case B4800: 469 case B9600: 470 case B19200: 471 case B38400: 472 case B57600: 473 case B115200: 474 case B230400: 475 value = B230400 / t->c_ospeed; 476 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 477 break; 478 default: 479 return; 480 } 481 482 if (t->c_cflag & PARENB) 483 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 484 else 485 value = UBSA_PARITY_NONE; 486 487 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 488 489 switch (t->c_cflag & CSIZE) { 490 case CS5: 491 value = 0; 492 break; 493 case CS6: 494 value = 1; 495 break; 496 case CS7: 497 value = 2; 498 break; 499 default: 500 case CS8: 501 value = 3; 502 break; 503 } 504 505 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 506 507 value = (t->c_cflag & CSTOPB) ? 1 : 0; 508 509 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 510 511 value = 0; 512 if (t->c_cflag & CRTSCTS) 513 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 514 515 if (t->c_iflag & (IXON | IXOFF)) 516 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 517 518 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 519} 520 521static void 522ubsa_start_read(struct ucom_softc *ucom) 523{ 524 struct ubsa_softc *sc = ucom->sc_parent; 525 526 /* start interrupt endpoint */ 527 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 528 529 /* start read endpoint */ 530 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 531} 532 533static void 534ubsa_stop_read(struct ucom_softc *ucom) 535{ 536 struct ubsa_softc *sc = ucom->sc_parent; 537 538 /* stop interrupt endpoint */ 539 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 540 541 /* stop read endpoint */ 542 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 543} 544 545static void 546ubsa_start_write(struct ucom_softc *ucom) 547{ 548 struct ubsa_softc *sc = ucom->sc_parent; 549 550 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 551} 552 553static void 554ubsa_stop_write(struct ucom_softc *ucom) 555{ 556 struct ubsa_softc *sc = ucom->sc_parent; 557 558 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 559} 560 561static void 562ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 563{ 564 struct ubsa_softc *sc = ucom->sc_parent; 565 566 DPRINTF("\n"); 567 568 *lsr = sc->sc_lsr; 569 *msr = sc->sc_msr; 570} 571 572static void 573ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 574{ 575 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 576 struct usb_page_cache *pc; 577 uint32_t actlen; 578 579 switch (USB_GET_STATE(xfer)) { 580 case USB_ST_SETUP: 581 case USB_ST_TRANSFERRED: 582tr_setup: 583 pc = usbd_xfer_get_frame(xfer, 0); 584 if (ucom_get_data(&sc->sc_ucom, pc, 0, 585 UBSA_BSIZE, &actlen)) { 586 587 usbd_xfer_set_frame_len(xfer, 0, actlen); 588 usbd_transfer_submit(xfer); 589 } 590 return; 591 592 default: /* Error */ 593 if (error != USB_ERR_CANCELLED) { 594 /* try to clear stall first */ 595 usbd_xfer_set_stall(xfer); 596 goto tr_setup; 597 } 598 return; 599 600 } 601} 602 603static void 604ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 605{ 606 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 607 struct usb_page_cache *pc; 608 int actlen; 609 610 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 611 612 switch (USB_GET_STATE(xfer)) { 613 case USB_ST_TRANSFERRED: 614 pc = usbd_xfer_get_frame(xfer, 0); 615 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 616 617 case USB_ST_SETUP: 618tr_setup: 619 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 620 usbd_transfer_submit(xfer); 621 return; 622 623 default: /* Error */ 624 if (error != USB_ERR_CANCELLED) { 625 /* try to clear stall first */ 626 usbd_xfer_set_stall(xfer); 627 goto tr_setup; 628 } 629 return; 630 631 } 632} 633 634static void 635ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 636{ 637 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 638 struct usb_page_cache *pc; 639 uint8_t buf[4]; 640 int actlen; 641 642 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 643 644 switch (USB_GET_STATE(xfer)) { 645 case USB_ST_TRANSFERRED: 646 647 if (actlen >= (int)sizeof(buf)) { 648 pc = usbd_xfer_get_frame(xfer, 0); 649 usbd_copy_out(pc, 0, buf, sizeof(buf)); 650 651 /* 652 * incidentally, Belkin adapter status bits match 653 * UART 16550 bits 654 */ 655 sc->sc_lsr = buf[2]; 656 sc->sc_msr = buf[3]; 657 658 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 659 sc->sc_lsr, sc->sc_msr); 660 661 ucom_status_change(&sc->sc_ucom); 662 } else { 663 DPRINTF("ignoring short packet, %d bytes\n", actlen); 664 } 665 666 case USB_ST_SETUP: 667tr_setup: 668 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 669 usbd_transfer_submit(xfer); 670 return; 671 672 default: /* Error */ 673 if (error != USB_ERR_CANCELLED) { 674 /* try to clear stall first */ 675 usbd_xfer_set_stall(xfer); 676 goto tr_setup; 677 } 678 return; 679 680 } 681} 682 683static void 684ubsa_poll(struct ucom_softc *ucom) 685{ 686 struct ubsa_softc *sc = ucom->sc_parent; 687 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 688 689} 690