ubsa.c revision 314501
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/11/sys/dev/usb/serial/ubsa.c 314501 2017-03-01 18:23:30Z ian $"); 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_RWTUN, 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); 276USB_PNP_HOST_INFO(ubsa_devs); 277 278static int 279ubsa_probe(device_t dev) 280{ 281 struct usb_attach_arg *uaa = device_get_ivars(dev); 282 283 if (uaa->usb_mode != USB_MODE_HOST) { 284 return (ENXIO); 285 } 286 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 287 return (ENXIO); 288 } 289 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 290 return (ENXIO); 291 } 292 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 293} 294 295static int 296ubsa_attach(device_t dev) 297{ 298 struct usb_attach_arg *uaa = device_get_ivars(dev); 299 struct ubsa_softc *sc = device_get_softc(dev); 300 int error; 301 302 DPRINTF("sc=%p\n", sc); 303 304 device_set_usb_desc(dev); 305 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 306 ucom_ref(&sc->sc_super_ucom); 307 308 sc->sc_udev = uaa->device; 309 sc->sc_iface_no = uaa->info.bIfaceNum; 310 sc->sc_iface_index = UBSA_IFACE_INDEX; 311 312 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 313 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx); 314 315 if (error) { 316 DPRINTF("could not allocate all pipes\n"); 317 goto detach; 318 } 319 /* clear stall at first run */ 320 mtx_lock(&sc->sc_mtx); 321 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 322 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 323 mtx_unlock(&sc->sc_mtx); 324 325 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 326 &ubsa_callback, &sc->sc_mtx); 327 if (error) { 328 DPRINTF("ucom_attach failed\n"); 329 goto detach; 330 } 331 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 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); 348 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 349 350 device_claim_softc(dev); 351 352 ubsa_free_softc(sc); 353 354 return (0); 355} 356 357UCOM_UNLOAD_DRAIN(ubsa); 358 359static void 360ubsa_free_softc(struct ubsa_softc *sc) 361{ 362 if (ucom_unref(&sc->sc_super_ucom)) { 363 mtx_destroy(&sc->sc_mtx); 364 device_free_softc(sc); 365 } 366} 367 368static void 369ubsa_free(struct ucom_softc *ucom) 370{ 371 ubsa_free_softc(ucom->sc_parent); 372} 373 374static void 375ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 376{ 377 struct usb_device_request req; 378 usb_error_t err; 379 380 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 381 req.bRequest = index; 382 USETW(req.wValue, value); 383 req.wIndex[0] = sc->sc_iface_no; 384 req.wIndex[1] = 0; 385 USETW(req.wLength, 0); 386 387 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 388 &req, NULL, 0, 1000); 389 if (err) { 390 DPRINTFN(0, "device request failed, err=%s " 391 "(ignored)\n", usbd_errstr(err)); 392 } 393} 394 395static void 396ubsa_cfg_set_dtr(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_DTR, onoff ? 1 : 0); 403} 404 405static void 406ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 407{ 408 struct ubsa_softc *sc = ucom->sc_parent; 409 410 DPRINTF("onoff = %d\n", onoff); 411 412 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 413} 414 415static void 416ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 417{ 418 struct ubsa_softc *sc = ucom->sc_parent; 419 420 DPRINTF("onoff = %d\n", onoff); 421 422 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 423} 424 425static int 426ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 427{ 428 429 DPRINTF("sc = %p\n", ucom->sc_parent); 430 431 switch (t->c_ospeed) { 432 case B0: 433 case B300: 434 case B600: 435 case B1200: 436 case B2400: 437 case B4800: 438 case B9600: 439 case B19200: 440 case B38400: 441 case B57600: 442 case B115200: 443 case B230400: 444 break; 445 default: 446 return (EINVAL); 447 } 448 return (0); 449} 450 451static void 452ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 453{ 454 struct ubsa_softc *sc = ucom->sc_parent; 455 uint16_t value = 0; 456 457 DPRINTF("sc = %p\n", sc); 458 459 switch (t->c_ospeed) { 460 case B0: 461 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 462 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 463 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 464 break; 465 case B300: 466 case B600: 467 case B1200: 468 case B2400: 469 case B4800: 470 case B9600: 471 case B19200: 472 case B38400: 473 case B57600: 474 case B115200: 475 case B230400: 476 value = B230400 / t->c_ospeed; 477 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 478 break; 479 default: 480 return; 481 } 482 483 if (t->c_cflag & PARENB) 484 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 485 else 486 value = UBSA_PARITY_NONE; 487 488 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 489 490 switch (t->c_cflag & CSIZE) { 491 case CS5: 492 value = 0; 493 break; 494 case CS6: 495 value = 1; 496 break; 497 case CS7: 498 value = 2; 499 break; 500 default: 501 case CS8: 502 value = 3; 503 break; 504 } 505 506 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 507 508 value = (t->c_cflag & CSTOPB) ? 1 : 0; 509 510 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 511 512 value = 0; 513 if (t->c_cflag & CRTSCTS) 514 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 515 516 if (t->c_iflag & (IXON | IXOFF)) 517 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 518 519 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 520} 521 522static void 523ubsa_start_read(struct ucom_softc *ucom) 524{ 525 struct ubsa_softc *sc = ucom->sc_parent; 526 527 /* start interrupt endpoint */ 528 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 529 530 /* start read endpoint */ 531 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 532} 533 534static void 535ubsa_stop_read(struct ucom_softc *ucom) 536{ 537 struct ubsa_softc *sc = ucom->sc_parent; 538 539 /* stop interrupt endpoint */ 540 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 541 542 /* stop read endpoint */ 543 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 544} 545 546static void 547ubsa_start_write(struct ucom_softc *ucom) 548{ 549 struct ubsa_softc *sc = ucom->sc_parent; 550 551 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 552} 553 554static void 555ubsa_stop_write(struct ucom_softc *ucom) 556{ 557 struct ubsa_softc *sc = ucom->sc_parent; 558 559 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 560} 561 562static void 563ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 564{ 565 struct ubsa_softc *sc = ucom->sc_parent; 566 567 DPRINTF("\n"); 568 569 *lsr = sc->sc_lsr; 570 *msr = sc->sc_msr; 571} 572 573static void 574ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 575{ 576 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 577 struct usb_page_cache *pc; 578 uint32_t actlen; 579 580 switch (USB_GET_STATE(xfer)) { 581 case USB_ST_SETUP: 582 case USB_ST_TRANSFERRED: 583tr_setup: 584 pc = usbd_xfer_get_frame(xfer, 0); 585 if (ucom_get_data(&sc->sc_ucom, pc, 0, 586 UBSA_BSIZE, &actlen)) { 587 588 usbd_xfer_set_frame_len(xfer, 0, actlen); 589 usbd_transfer_submit(xfer); 590 } 591 return; 592 593 default: /* Error */ 594 if (error != USB_ERR_CANCELLED) { 595 /* try to clear stall first */ 596 usbd_xfer_set_stall(xfer); 597 goto tr_setup; 598 } 599 return; 600 601 } 602} 603 604static void 605ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 606{ 607 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 608 struct usb_page_cache *pc; 609 int actlen; 610 611 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 612 613 switch (USB_GET_STATE(xfer)) { 614 case USB_ST_TRANSFERRED: 615 pc = usbd_xfer_get_frame(xfer, 0); 616 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 617 618 case USB_ST_SETUP: 619tr_setup: 620 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 621 usbd_transfer_submit(xfer); 622 return; 623 624 default: /* Error */ 625 if (error != USB_ERR_CANCELLED) { 626 /* try to clear stall first */ 627 usbd_xfer_set_stall(xfer); 628 goto tr_setup; 629 } 630 return; 631 632 } 633} 634 635static void 636ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 637{ 638 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 639 struct usb_page_cache *pc; 640 uint8_t buf[4]; 641 int actlen; 642 643 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 644 645 switch (USB_GET_STATE(xfer)) { 646 case USB_ST_TRANSFERRED: 647 648 if (actlen >= (int)sizeof(buf)) { 649 pc = usbd_xfer_get_frame(xfer, 0); 650 usbd_copy_out(pc, 0, buf, sizeof(buf)); 651 652 /* 653 * MSR bits need translation from ns16550 to SER_* values. 654 * LSR bits are ns16550 in hardware and ucom. 655 */ 656 sc->sc_msr = 0; 657 if (buf[3] & UBSA_MSR_CTS) 658 sc->sc_msr |= SER_CTS; 659 if (buf[3] & UBSA_MSR_DCD) 660 sc->sc_msr |= SER_DCD; 661 if (buf[3] & UBSA_MSR_RI) 662 sc->sc_msr |= SER_RI; 663 if (buf[3] & UBSA_MSR_DSR) 664 sc->sc_msr |= SER_DSR; 665 sc->sc_lsr = buf[2]; 666 667 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 668 sc->sc_lsr, sc->sc_msr); 669 670 ucom_status_change(&sc->sc_ucom); 671 } else { 672 DPRINTF("ignoring short packet, %d bytes\n", actlen); 673 } 674 /* FALLTHROUGH */ 675 case USB_ST_SETUP: 676tr_setup: 677 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 678 usbd_transfer_submit(xfer); 679 return; 680 681 default: /* Error */ 682 if (error != USB_ERR_CANCELLED) { 683 /* try to clear stall first */ 684 usbd_xfer_set_stall(xfer); 685 goto tr_setup; 686 } 687 return; 688 689 } 690} 691 692static void 693ubsa_poll(struct ucom_softc *ucom) 694{ 695 struct ubsa_softc *sc = ucom->sc_parent; 696 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 697 698} 699