ubsa.c revision 207077
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: head/sys/dev/usb/serial/ubsa.c 207077 2010-04-22 21:31:34Z thompsa $"); 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/linker_set.h> 74#include <sys/module.h> 75#include <sys/lock.h> 76#include <sys/mutex.h> 77#include <sys/condvar.h> 78#include <sys/sysctl.h> 79#include <sys/sx.h> 80#include <sys/unistd.h> 81#include <sys/callout.h> 82#include <sys/malloc.h> 83#include <sys/priv.h> 84 85#include <dev/usb/usb.h> 86#include <dev/usb/usbdi.h> 87#include <dev/usb/usbdi_util.h> 88#include "usbdevs.h" 89 90#define USB_DEBUG_VAR ubsa_debug 91#include <dev/usb/usb_debug.h> 92#include <dev/usb/usb_process.h> 93 94#include <dev/usb/serial/usb_serial.h> 95 96#ifdef USB_DEBUG 97static int ubsa_debug = 0; 98 99SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa"); 100SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW, 101 &ubsa_debug, 0, "ubsa debug level"); 102#endif 103 104#define UBSA_BSIZE 1024 /* bytes */ 105 106#define UBSA_CONFIG_INDEX 0 107#define UBSA_IFACE_INDEX 0 108 109#define UBSA_REG_BAUDRATE 0x00 110#define UBSA_REG_STOP_BITS 0x01 111#define UBSA_REG_DATA_BITS 0x02 112#define UBSA_REG_PARITY 0x03 113#define UBSA_REG_DTR 0x0A 114#define UBSA_REG_RTS 0x0B 115#define UBSA_REG_BREAK 0x0C 116#define UBSA_REG_FLOW_CTRL 0x10 117 118#define UBSA_PARITY_NONE 0x00 119#define UBSA_PARITY_EVEN 0x01 120#define UBSA_PARITY_ODD 0x02 121#define UBSA_PARITY_MARK 0x03 122#define UBSA_PARITY_SPACE 0x04 123 124#define UBSA_FLOW_NONE 0x0000 125#define UBSA_FLOW_OCTS 0x0001 126#define UBSA_FLOW_ODSR 0x0002 127#define UBSA_FLOW_IDSR 0x0004 128#define UBSA_FLOW_IDTR 0x0008 129#define UBSA_FLOW_IRTS 0x0010 130#define UBSA_FLOW_ORTS 0x0020 131#define UBSA_FLOW_UNKNOWN 0x0040 132#define UBSA_FLOW_OXON 0x0080 133#define UBSA_FLOW_IXON 0x0100 134 135/* line status register */ 136#define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */ 137#define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */ 138#define UBSA_LSR_BI 0x10 /* Break detected */ 139#define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */ 140#define UBSA_LSR_PE 0x04 /* Parity error */ 141#define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */ 142#define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */ 143#define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */ 144 145/* modem status register */ 146/* All deltas are from the last read of the MSR. */ 147#define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */ 148#define UBSA_MSR_RI 0x40 /* Current Ring Indicator */ 149#define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */ 150#define UBSA_MSR_CTS 0x10 /* Current Clear to Send */ 151#define UBSA_MSR_DDCD 0x08 /* DCD has changed state */ 152#define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */ 153#define UBSA_MSR_DDSR 0x02 /* DSR has changed state */ 154#define UBSA_MSR_DCTS 0x01 /* CTS has changed state */ 155 156enum { 157 UBSA_BULK_DT_WR, 158 UBSA_BULK_DT_RD, 159 UBSA_INTR_DT_RD, 160 UBSA_N_TRANSFER, 161}; 162 163struct ubsa_softc { 164 struct ucom_super_softc sc_super_ucom; 165 struct ucom_softc sc_ucom; 166 167 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER]; 168 struct usb_device *sc_udev; 169 struct mtx sc_mtx; 170 171 uint8_t sc_iface_no; /* interface number */ 172 uint8_t sc_iface_index; /* interface index */ 173 uint8_t sc_lsr; /* local status register */ 174 uint8_t sc_msr; /* UBSA status register */ 175}; 176 177static device_probe_t ubsa_probe; 178static device_attach_t ubsa_attach; 179static device_detach_t ubsa_detach; 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_cfg_set_dtr(struct ucom_softc *, uint8_t); 187static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 188static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 189static int ubsa_pre_param(struct ucom_softc *, struct termios *); 190static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 191static void ubsa_start_read(struct ucom_softc *); 192static void ubsa_stop_read(struct ucom_softc *); 193static void ubsa_start_write(struct ucom_softc *); 194static void ubsa_stop_write(struct ucom_softc *); 195static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 196 uint8_t *); 197static void ubsa_poll(struct ucom_softc *ucom); 198 199static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 200 201 [UBSA_BULK_DT_WR] = { 202 .type = UE_BULK, 203 .endpoint = UE_ADDR_ANY, 204 .direction = UE_DIR_OUT, 205 .bufsize = UBSA_BSIZE, /* bytes */ 206 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 207 .callback = &ubsa_write_callback, 208 }, 209 210 [UBSA_BULK_DT_RD] = { 211 .type = UE_BULK, 212 .endpoint = UE_ADDR_ANY, 213 .direction = UE_DIR_IN, 214 .bufsize = UBSA_BSIZE, /* bytes */ 215 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 216 .callback = &ubsa_read_callback, 217 }, 218 219 [UBSA_INTR_DT_RD] = { 220 .type = UE_INTERRUPT, 221 .endpoint = UE_ADDR_ANY, 222 .direction = UE_DIR_IN, 223 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 224 .bufsize = 0, /* use wMaxPacketSize */ 225 .callback = &ubsa_intr_callback, 226 }, 227}; 228 229static const struct ucom_callback ubsa_callback = { 230 .ucom_cfg_get_status = &ubsa_cfg_get_status, 231 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 232 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 233 .ucom_cfg_set_break = &ubsa_cfg_set_break, 234 .ucom_cfg_param = &ubsa_cfg_param, 235 .ucom_pre_param = &ubsa_pre_param, 236 .ucom_start_read = &ubsa_start_read, 237 .ucom_stop_read = &ubsa_stop_read, 238 .ucom_start_write = &ubsa_start_write, 239 .ucom_stop_write = &ubsa_stop_write, 240 .ucom_poll = &ubsa_poll, 241}; 242 243static const struct usb_device_id ubsa_devs[] = { 244 /* AnyData ADU-500A */ 245 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 246 /* AnyData ADU-E100A/H */ 247 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 248 /* Axesstel MV100H */ 249 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 250 /* BELKIN F5U103 */ 251 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 252 /* BELKIN F5U120 */ 253 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 254 /* GoHubs GO-COM232 */ 255 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 256 /* GoHubs GO-COM232 */ 257 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 258 /* Peracom */ 259 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 260}; 261 262static device_method_t ubsa_methods[] = { 263 DEVMETHOD(device_probe, ubsa_probe), 264 DEVMETHOD(device_attach, ubsa_attach), 265 DEVMETHOD(device_detach, ubsa_detach), 266 {0, 0} 267}; 268 269static devclass_t ubsa_devclass; 270 271static driver_t ubsa_driver = { 272 .name = "ubsa", 273 .methods = ubsa_methods, 274 .size = sizeof(struct ubsa_softc), 275}; 276 277DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 278MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 279MODULE_DEPEND(ubsa, usb, 1, 1, 1); 280 281static int 282ubsa_probe(device_t dev) 283{ 284 struct usb_attach_arg *uaa = device_get_ivars(dev); 285 286 if (uaa->usb_mode != USB_MODE_HOST) { 287 return (ENXIO); 288 } 289 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 290 return (ENXIO); 291 } 292 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 293 return (ENXIO); 294 } 295 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 296} 297 298static int 299ubsa_attach(device_t dev) 300{ 301 struct usb_attach_arg *uaa = device_get_ivars(dev); 302 struct ubsa_softc *sc = device_get_softc(dev); 303 int error; 304 305 DPRINTF("sc=%p\n", sc); 306 307 device_set_usb_desc(dev); 308 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 309 310 sc->sc_udev = uaa->device; 311 sc->sc_iface_no = uaa->info.bIfaceNum; 312 sc->sc_iface_index = UBSA_IFACE_INDEX; 313 314 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 315 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx); 316 317 if (error) { 318 DPRINTF("could not allocate all pipes\n"); 319 goto detach; 320 } 321 /* clear stall at first run */ 322 mtx_lock(&sc->sc_mtx); 323 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 324 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 325 mtx_unlock(&sc->sc_mtx); 326 327 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 328 &ubsa_callback, &sc->sc_mtx); 329 if (error) { 330 DPRINTF("ucom_attach failed\n"); 331 goto detach; 332 } 333 return (0); 334 335detach: 336 ubsa_detach(dev); 337 return (ENXIO); 338} 339 340static int 341ubsa_detach(device_t dev) 342{ 343 struct ubsa_softc *sc = device_get_softc(dev); 344 345 DPRINTF("sc=%p\n", sc); 346 347 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 348 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 349 mtx_destroy(&sc->sc_mtx); 350 351 return (0); 352} 353 354static void 355ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 356{ 357 struct usb_device_request req; 358 usb_error_t err; 359 360 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 361 req.bRequest = index; 362 USETW(req.wValue, value); 363 req.wIndex[0] = sc->sc_iface_no; 364 req.wIndex[1] = 0; 365 USETW(req.wLength, 0); 366 367 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 368 &req, NULL, 0, 1000); 369 if (err) { 370 DPRINTFN(0, "device request failed, err=%s " 371 "(ignored)\n", usbd_errstr(err)); 372 } 373} 374 375static void 376ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 377{ 378 struct ubsa_softc *sc = ucom->sc_parent; 379 380 DPRINTF("onoff = %d\n", onoff); 381 382 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 383} 384 385static void 386ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 387{ 388 struct ubsa_softc *sc = ucom->sc_parent; 389 390 DPRINTF("onoff = %d\n", onoff); 391 392 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 393} 394 395static void 396ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 397{ 398 struct ubsa_softc *sc = ucom->sc_parent; 399 400 DPRINTF("onoff = %d\n", onoff); 401 402 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 403} 404 405static int 406ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 407{ 408 409 DPRINTF("sc = %p\n", ucom->sc_parent); 410 411 switch (t->c_ospeed) { 412 case B0: 413 case B300: 414 case B600: 415 case B1200: 416 case B2400: 417 case B4800: 418 case B9600: 419 case B19200: 420 case B38400: 421 case B57600: 422 case B115200: 423 case B230400: 424 break; 425 default: 426 return (EINVAL); 427 } 428 return (0); 429} 430 431static void 432ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 433{ 434 struct ubsa_softc *sc = ucom->sc_parent; 435 uint16_t value = 0; 436 437 DPRINTF("sc = %p\n", sc); 438 439 switch (t->c_ospeed) { 440 case B0: 441 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 442 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 443 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 444 break; 445 case B300: 446 case B600: 447 case B1200: 448 case B2400: 449 case B4800: 450 case B9600: 451 case B19200: 452 case B38400: 453 case B57600: 454 case B115200: 455 case B230400: 456 value = B230400 / t->c_ospeed; 457 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 458 break; 459 default: 460 return; 461 } 462 463 if (t->c_cflag & PARENB) 464 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 465 else 466 value = UBSA_PARITY_NONE; 467 468 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 469 470 switch (t->c_cflag & CSIZE) { 471 case CS5: 472 value = 0; 473 break; 474 case CS6: 475 value = 1; 476 break; 477 case CS7: 478 value = 2; 479 break; 480 default: 481 case CS8: 482 value = 3; 483 break; 484 } 485 486 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 487 488 value = (t->c_cflag & CSTOPB) ? 1 : 0; 489 490 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 491 492 value = 0; 493 if (t->c_cflag & CRTSCTS) 494 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 495 496 if (t->c_iflag & (IXON | IXOFF)) 497 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 498 499 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 500} 501 502static void 503ubsa_start_read(struct ucom_softc *ucom) 504{ 505 struct ubsa_softc *sc = ucom->sc_parent; 506 507 /* start interrupt endpoint */ 508 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 509 510 /* start read endpoint */ 511 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 512} 513 514static void 515ubsa_stop_read(struct ucom_softc *ucom) 516{ 517 struct ubsa_softc *sc = ucom->sc_parent; 518 519 /* stop interrupt endpoint */ 520 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 521 522 /* stop read endpoint */ 523 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 524} 525 526static void 527ubsa_start_write(struct ucom_softc *ucom) 528{ 529 struct ubsa_softc *sc = ucom->sc_parent; 530 531 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 532} 533 534static void 535ubsa_stop_write(struct ucom_softc *ucom) 536{ 537 struct ubsa_softc *sc = ucom->sc_parent; 538 539 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 540} 541 542static void 543ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 544{ 545 struct ubsa_softc *sc = ucom->sc_parent; 546 547 DPRINTF("\n"); 548 549 *lsr = sc->sc_lsr; 550 *msr = sc->sc_msr; 551} 552 553static void 554ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 555{ 556 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 557 struct usb_page_cache *pc; 558 uint32_t actlen; 559 560 switch (USB_GET_STATE(xfer)) { 561 case USB_ST_SETUP: 562 case USB_ST_TRANSFERRED: 563tr_setup: 564 pc = usbd_xfer_get_frame(xfer, 0); 565 if (ucom_get_data(&sc->sc_ucom, pc, 0, 566 UBSA_BSIZE, &actlen)) { 567 568 usbd_xfer_set_frame_len(xfer, 0, actlen); 569 usbd_transfer_submit(xfer); 570 } 571 return; 572 573 default: /* Error */ 574 if (error != USB_ERR_CANCELLED) { 575 /* try to clear stall first */ 576 usbd_xfer_set_stall(xfer); 577 goto tr_setup; 578 } 579 return; 580 581 } 582} 583 584static void 585ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 586{ 587 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 588 struct usb_page_cache *pc; 589 int actlen; 590 591 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 592 593 switch (USB_GET_STATE(xfer)) { 594 case USB_ST_TRANSFERRED: 595 pc = usbd_xfer_get_frame(xfer, 0); 596 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 597 598 case USB_ST_SETUP: 599tr_setup: 600 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 601 usbd_transfer_submit(xfer); 602 return; 603 604 default: /* Error */ 605 if (error != USB_ERR_CANCELLED) { 606 /* try to clear stall first */ 607 usbd_xfer_set_stall(xfer); 608 goto tr_setup; 609 } 610 return; 611 612 } 613} 614 615static void 616ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 617{ 618 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 619 struct usb_page_cache *pc; 620 uint8_t buf[4]; 621 int actlen; 622 623 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 624 625 switch (USB_GET_STATE(xfer)) { 626 case USB_ST_TRANSFERRED: 627 628 if (actlen >= sizeof(buf)) { 629 pc = usbd_xfer_get_frame(xfer, 0); 630 usbd_copy_out(pc, 0, buf, sizeof(buf)); 631 632 /* 633 * incidentally, Belkin adapter status bits match 634 * UART 16550 bits 635 */ 636 sc->sc_lsr = buf[2]; 637 sc->sc_msr = buf[3]; 638 639 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 640 sc->sc_lsr, sc->sc_msr); 641 642 ucom_status_change(&sc->sc_ucom); 643 } else { 644 DPRINTF("ignoring short packet, %d bytes\n", actlen); 645 } 646 647 case USB_ST_SETUP: 648tr_setup: 649 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 650 usbd_transfer_submit(xfer); 651 return; 652 653 default: /* Error */ 654 if (error != USB_ERR_CANCELLED) { 655 /* try to clear stall first */ 656 usbd_xfer_set_stall(xfer); 657 goto tr_setup; 658 } 659 return; 660 661 } 662} 663 664static void 665ubsa_poll(struct ucom_softc *ucom) 666{ 667 struct ubsa_softc *sc = ucom->sc_parent; 668 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 669 670} 671