ubsa.c revision 256281
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 239299 2012-08-15 15:42:57Z hselasky $"); 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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the NetBSD 47 * Foundation, Inc. and its contributors. 48 * 4. Neither the name of The NetBSD Foundation nor the names of its 49 * contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 53 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 54 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 55 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 56 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 57 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 58 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 59 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 60 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 61 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 62 * POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65#include <sys/stdint.h> 66#include <sys/stddef.h> 67#include <sys/param.h> 68#include <sys/queue.h> 69#include <sys/types.h> 70#include <sys/systm.h> 71#include <sys/kernel.h> 72#include <sys/bus.h> 73#include <sys/module.h> 74#include <sys/lock.h> 75#include <sys/mutex.h> 76#include <sys/condvar.h> 77#include <sys/sysctl.h> 78#include <sys/sx.h> 79#include <sys/unistd.h> 80#include <sys/callout.h> 81#include <sys/malloc.h> 82#include <sys/priv.h> 83 84#include <dev/usb/usb.h> 85#include <dev/usb/usbdi.h> 86#include <dev/usb/usbdi_util.h> 87#include "usbdevs.h" 88 89#define USB_DEBUG_VAR ubsa_debug 90#include <dev/usb/usb_debug.h> 91#include <dev/usb/usb_process.h> 92 93#include <dev/usb/serial/usb_serial.h> 94 95#ifdef USB_DEBUG 96static int ubsa_debug = 0; 97 98static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa"); 99SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW, 100 &ubsa_debug, 0, "ubsa debug level"); 101#endif 102 103#define UBSA_BSIZE 1024 /* bytes */ 104 105#define UBSA_CONFIG_INDEX 0 106#define UBSA_IFACE_INDEX 0 107 108#define UBSA_REG_BAUDRATE 0x00 109#define UBSA_REG_STOP_BITS 0x01 110#define UBSA_REG_DATA_BITS 0x02 111#define UBSA_REG_PARITY 0x03 112#define UBSA_REG_DTR 0x0A 113#define UBSA_REG_RTS 0x0B 114#define UBSA_REG_BREAK 0x0C 115#define UBSA_REG_FLOW_CTRL 0x10 116 117#define UBSA_PARITY_NONE 0x00 118#define UBSA_PARITY_EVEN 0x01 119#define UBSA_PARITY_ODD 0x02 120#define UBSA_PARITY_MARK 0x03 121#define UBSA_PARITY_SPACE 0x04 122 123#define UBSA_FLOW_NONE 0x0000 124#define UBSA_FLOW_OCTS 0x0001 125#define UBSA_FLOW_ODSR 0x0002 126#define UBSA_FLOW_IDSR 0x0004 127#define UBSA_FLOW_IDTR 0x0008 128#define UBSA_FLOW_IRTS 0x0010 129#define UBSA_FLOW_ORTS 0x0020 130#define UBSA_FLOW_UNKNOWN 0x0040 131#define UBSA_FLOW_OXON 0x0080 132#define UBSA_FLOW_IXON 0x0100 133 134/* line status register */ 135#define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */ 136#define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */ 137#define UBSA_LSR_BI 0x10 /* Break detected */ 138#define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */ 139#define UBSA_LSR_PE 0x04 /* Parity error */ 140#define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */ 141#define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */ 142#define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */ 143 144/* modem status register */ 145/* All deltas are from the last read of the MSR. */ 146#define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */ 147#define UBSA_MSR_RI 0x40 /* Current Ring Indicator */ 148#define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */ 149#define UBSA_MSR_CTS 0x10 /* Current Clear to Send */ 150#define UBSA_MSR_DDCD 0x08 /* DCD has changed state */ 151#define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */ 152#define UBSA_MSR_DDSR 0x02 /* DSR has changed state */ 153#define UBSA_MSR_DCTS 0x01 /* CTS has changed state */ 154 155enum { 156 UBSA_BULK_DT_WR, 157 UBSA_BULK_DT_RD, 158 UBSA_INTR_DT_RD, 159 UBSA_N_TRANSFER, 160}; 161 162struct ubsa_softc { 163 struct ucom_super_softc sc_super_ucom; 164 struct ucom_softc sc_ucom; 165 166 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER]; 167 struct usb_device *sc_udev; 168 struct mtx sc_mtx; 169 170 uint8_t sc_iface_no; /* interface number */ 171 uint8_t sc_iface_index; /* interface index */ 172 uint8_t sc_lsr; /* local status register */ 173 uint8_t sc_msr; /* UBSA status register */ 174}; 175 176static device_probe_t ubsa_probe; 177static device_attach_t ubsa_attach; 178static device_detach_t ubsa_detach; 179static void ubsa_free_softc(struct ubsa_softc *); 180 181static usb_callback_t ubsa_write_callback; 182static usb_callback_t ubsa_read_callback; 183static usb_callback_t ubsa_intr_callback; 184 185static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 186static void ubsa_free(struct ucom_softc *); 187static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 188static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 189static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 190static int ubsa_pre_param(struct ucom_softc *, struct termios *); 191static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 192static void ubsa_start_read(struct ucom_softc *); 193static void ubsa_stop_read(struct ucom_softc *); 194static void ubsa_start_write(struct ucom_softc *); 195static void ubsa_stop_write(struct ucom_softc *); 196static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 197 uint8_t *); 198static void ubsa_poll(struct ucom_softc *ucom); 199 200static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 201 202 [UBSA_BULK_DT_WR] = { 203 .type = UE_BULK, 204 .endpoint = UE_ADDR_ANY, 205 .direction = UE_DIR_OUT, 206 .bufsize = UBSA_BSIZE, /* bytes */ 207 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 208 .callback = &ubsa_write_callback, 209 }, 210 211 [UBSA_BULK_DT_RD] = { 212 .type = UE_BULK, 213 .endpoint = UE_ADDR_ANY, 214 .direction = UE_DIR_IN, 215 .bufsize = UBSA_BSIZE, /* bytes */ 216 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 217 .callback = &ubsa_read_callback, 218 }, 219 220 [UBSA_INTR_DT_RD] = { 221 .type = UE_INTERRUPT, 222 .endpoint = UE_ADDR_ANY, 223 .direction = UE_DIR_IN, 224 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 225 .bufsize = 0, /* use wMaxPacketSize */ 226 .callback = &ubsa_intr_callback, 227 }, 228}; 229 230static const struct ucom_callback ubsa_callback = { 231 .ucom_cfg_get_status = &ubsa_cfg_get_status, 232 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 233 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 234 .ucom_cfg_set_break = &ubsa_cfg_set_break, 235 .ucom_cfg_param = &ubsa_cfg_param, 236 .ucom_pre_param = &ubsa_pre_param, 237 .ucom_start_read = &ubsa_start_read, 238 .ucom_stop_read = &ubsa_stop_read, 239 .ucom_start_write = &ubsa_start_write, 240 .ucom_stop_write = &ubsa_stop_write, 241 .ucom_poll = &ubsa_poll, 242 .ucom_free = &ubsa_free, 243}; 244 245static const STRUCT_USB_HOST_ID ubsa_devs[] = { 246 /* AnyData ADU-500A */ 247 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 248 /* AnyData ADU-E100A/H */ 249 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 250 /* Axesstel MV100H */ 251 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 252 /* BELKIN F5U103 */ 253 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 254 /* BELKIN F5U120 */ 255 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 256 /* GoHubs GO-COM232 */ 257 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 258 /* GoHubs GO-COM232 */ 259 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 260 /* Peracom */ 261 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 262}; 263 264static device_method_t ubsa_methods[] = { 265 DEVMETHOD(device_probe, ubsa_probe), 266 DEVMETHOD(device_attach, ubsa_attach), 267 DEVMETHOD(device_detach, ubsa_detach), 268 DEVMETHOD_END 269}; 270 271static devclass_t ubsa_devclass; 272 273static driver_t ubsa_driver = { 274 .name = "ubsa", 275 .methods = ubsa_methods, 276 .size = sizeof(struct ubsa_softc), 277}; 278 279DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 280MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 281MODULE_DEPEND(ubsa, usb, 1, 1, 1); 282MODULE_VERSION(ubsa, 1); 283 284static int 285ubsa_probe(device_t dev) 286{ 287 struct usb_attach_arg *uaa = device_get_ivars(dev); 288 289 if (uaa->usb_mode != USB_MODE_HOST) { 290 return (ENXIO); 291 } 292 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 293 return (ENXIO); 294 } 295 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 296 return (ENXIO); 297 } 298 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 299} 300 301static int 302ubsa_attach(device_t dev) 303{ 304 struct usb_attach_arg *uaa = device_get_ivars(dev); 305 struct ubsa_softc *sc = device_get_softc(dev); 306 int error; 307 308 DPRINTF("sc=%p\n", sc); 309 310 device_set_usb_desc(dev); 311 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 312 ucom_ref(&sc->sc_super_ucom); 313 314 sc->sc_udev = uaa->device; 315 sc->sc_iface_no = uaa->info.bIfaceNum; 316 sc->sc_iface_index = UBSA_IFACE_INDEX; 317 318 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 319 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx); 320 321 if (error) { 322 DPRINTF("could not allocate all pipes\n"); 323 goto detach; 324 } 325 /* clear stall at first run */ 326 mtx_lock(&sc->sc_mtx); 327 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 328 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 329 mtx_unlock(&sc->sc_mtx); 330 331 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 332 &ubsa_callback, &sc->sc_mtx); 333 if (error) { 334 DPRINTF("ucom_attach failed\n"); 335 goto detach; 336 } 337 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 338 339 return (0); 340 341detach: 342 ubsa_detach(dev); 343 return (ENXIO); 344} 345 346static int 347ubsa_detach(device_t dev) 348{ 349 struct ubsa_softc *sc = device_get_softc(dev); 350 351 DPRINTF("sc=%p\n", sc); 352 353 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 354 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 355 356 device_claim_softc(dev); 357 358 ubsa_free_softc(sc); 359 360 return (0); 361} 362 363UCOM_UNLOAD_DRAIN(ubsa); 364 365static void 366ubsa_free_softc(struct ubsa_softc *sc) 367{ 368 if (ucom_unref(&sc->sc_super_ucom)) { 369 mtx_destroy(&sc->sc_mtx); 370 device_free_softc(sc); 371 } 372} 373 374static void 375ubsa_free(struct ucom_softc *ucom) 376{ 377 ubsa_free_softc(ucom->sc_parent); 378} 379 380static void 381ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 382{ 383 struct usb_device_request req; 384 usb_error_t err; 385 386 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 387 req.bRequest = index; 388 USETW(req.wValue, value); 389 req.wIndex[0] = sc->sc_iface_no; 390 req.wIndex[1] = 0; 391 USETW(req.wLength, 0); 392 393 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 394 &req, NULL, 0, 1000); 395 if (err) { 396 DPRINTFN(0, "device request failed, err=%s " 397 "(ignored)\n", usbd_errstr(err)); 398 } 399} 400 401static void 402ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 403{ 404 struct ubsa_softc *sc = ucom->sc_parent; 405 406 DPRINTF("onoff = %d\n", onoff); 407 408 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 409} 410 411static void 412ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 413{ 414 struct ubsa_softc *sc = ucom->sc_parent; 415 416 DPRINTF("onoff = %d\n", onoff); 417 418 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 419} 420 421static void 422ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 423{ 424 struct ubsa_softc *sc = ucom->sc_parent; 425 426 DPRINTF("onoff = %d\n", onoff); 427 428 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 429} 430 431static int 432ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 433{ 434 435 DPRINTF("sc = %p\n", ucom->sc_parent); 436 437 switch (t->c_ospeed) { 438 case B0: 439 case B300: 440 case B600: 441 case B1200: 442 case B2400: 443 case B4800: 444 case B9600: 445 case B19200: 446 case B38400: 447 case B57600: 448 case B115200: 449 case B230400: 450 break; 451 default: 452 return (EINVAL); 453 } 454 return (0); 455} 456 457static void 458ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 459{ 460 struct ubsa_softc *sc = ucom->sc_parent; 461 uint16_t value = 0; 462 463 DPRINTF("sc = %p\n", sc); 464 465 switch (t->c_ospeed) { 466 case B0: 467 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 468 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 469 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 470 break; 471 case B300: 472 case B600: 473 case B1200: 474 case B2400: 475 case B4800: 476 case B9600: 477 case B19200: 478 case B38400: 479 case B57600: 480 case B115200: 481 case B230400: 482 value = B230400 / t->c_ospeed; 483 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 484 break; 485 default: 486 return; 487 } 488 489 if (t->c_cflag & PARENB) 490 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 491 else 492 value = UBSA_PARITY_NONE; 493 494 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 495 496 switch (t->c_cflag & CSIZE) { 497 case CS5: 498 value = 0; 499 break; 500 case CS6: 501 value = 1; 502 break; 503 case CS7: 504 value = 2; 505 break; 506 default: 507 case CS8: 508 value = 3; 509 break; 510 } 511 512 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 513 514 value = (t->c_cflag & CSTOPB) ? 1 : 0; 515 516 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 517 518 value = 0; 519 if (t->c_cflag & CRTSCTS) 520 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 521 522 if (t->c_iflag & (IXON | IXOFF)) 523 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 524 525 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 526} 527 528static void 529ubsa_start_read(struct ucom_softc *ucom) 530{ 531 struct ubsa_softc *sc = ucom->sc_parent; 532 533 /* start interrupt endpoint */ 534 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 535 536 /* start read endpoint */ 537 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 538} 539 540static void 541ubsa_stop_read(struct ucom_softc *ucom) 542{ 543 struct ubsa_softc *sc = ucom->sc_parent; 544 545 /* stop interrupt endpoint */ 546 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 547 548 /* stop read endpoint */ 549 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 550} 551 552static void 553ubsa_start_write(struct ucom_softc *ucom) 554{ 555 struct ubsa_softc *sc = ucom->sc_parent; 556 557 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 558} 559 560static void 561ubsa_stop_write(struct ucom_softc *ucom) 562{ 563 struct ubsa_softc *sc = ucom->sc_parent; 564 565 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 566} 567 568static void 569ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 570{ 571 struct ubsa_softc *sc = ucom->sc_parent; 572 573 DPRINTF("\n"); 574 575 *lsr = sc->sc_lsr; 576 *msr = sc->sc_msr; 577} 578 579static void 580ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 581{ 582 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 583 struct usb_page_cache *pc; 584 uint32_t actlen; 585 586 switch (USB_GET_STATE(xfer)) { 587 case USB_ST_SETUP: 588 case USB_ST_TRANSFERRED: 589tr_setup: 590 pc = usbd_xfer_get_frame(xfer, 0); 591 if (ucom_get_data(&sc->sc_ucom, pc, 0, 592 UBSA_BSIZE, &actlen)) { 593 594 usbd_xfer_set_frame_len(xfer, 0, actlen); 595 usbd_transfer_submit(xfer); 596 } 597 return; 598 599 default: /* Error */ 600 if (error != USB_ERR_CANCELLED) { 601 /* try to clear stall first */ 602 usbd_xfer_set_stall(xfer); 603 goto tr_setup; 604 } 605 return; 606 607 } 608} 609 610static void 611ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 612{ 613 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 614 struct usb_page_cache *pc; 615 int actlen; 616 617 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 618 619 switch (USB_GET_STATE(xfer)) { 620 case USB_ST_TRANSFERRED: 621 pc = usbd_xfer_get_frame(xfer, 0); 622 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 623 624 case USB_ST_SETUP: 625tr_setup: 626 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 627 usbd_transfer_submit(xfer); 628 return; 629 630 default: /* Error */ 631 if (error != USB_ERR_CANCELLED) { 632 /* try to clear stall first */ 633 usbd_xfer_set_stall(xfer); 634 goto tr_setup; 635 } 636 return; 637 638 } 639} 640 641static void 642ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 643{ 644 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 645 struct usb_page_cache *pc; 646 uint8_t buf[4]; 647 int actlen; 648 649 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 650 651 switch (USB_GET_STATE(xfer)) { 652 case USB_ST_TRANSFERRED: 653 654 if (actlen >= (int)sizeof(buf)) { 655 pc = usbd_xfer_get_frame(xfer, 0); 656 usbd_copy_out(pc, 0, buf, sizeof(buf)); 657 658 /* 659 * incidentally, Belkin adapter status bits match 660 * UART 16550 bits 661 */ 662 sc->sc_lsr = buf[2]; 663 sc->sc_msr = buf[3]; 664 665 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 666 sc->sc_lsr, sc->sc_msr); 667 668 ucom_status_change(&sc->sc_ucom); 669 } else { 670 DPRINTF("ignoring short packet, %d bytes\n", actlen); 671 } 672 673 case USB_ST_SETUP: 674tr_setup: 675 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 676 usbd_transfer_submit(xfer); 677 return; 678 679 default: /* Error */ 680 if (error != USB_ERR_CANCELLED) { 681 /* try to clear stall first */ 682 usbd_xfer_set_stall(xfer); 683 goto tr_setup; 684 } 685 return; 686 687 } 688} 689 690static void 691ubsa_poll(struct ucom_softc *ucom) 692{ 693 struct ubsa_softc *sc = ucom->sc_parent; 694 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 695 696} 697