ubsa.c revision 217265
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 217265 2011-01-11 13:59:06Z jhb $"); 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 98SYSCTL_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; 179 180static usb_callback_t ubsa_write_callback; 181static usb_callback_t ubsa_read_callback; 182static usb_callback_t ubsa_intr_callback; 183 184static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 185static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 186static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 187static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 188static int ubsa_pre_param(struct ucom_softc *, struct termios *); 189static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 190static void ubsa_start_read(struct ucom_softc *); 191static void ubsa_stop_read(struct ucom_softc *); 192static void ubsa_start_write(struct ucom_softc *); 193static void ubsa_stop_write(struct ucom_softc *); 194static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 195 uint8_t *); 196static void ubsa_poll(struct ucom_softc *ucom); 197 198static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 199 200 [UBSA_BULK_DT_WR] = { 201 .type = UE_BULK, 202 .endpoint = UE_ADDR_ANY, 203 .direction = UE_DIR_OUT, 204 .bufsize = UBSA_BSIZE, /* bytes */ 205 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 206 .callback = &ubsa_write_callback, 207 }, 208 209 [UBSA_BULK_DT_RD] = { 210 .type = UE_BULK, 211 .endpoint = UE_ADDR_ANY, 212 .direction = UE_DIR_IN, 213 .bufsize = UBSA_BSIZE, /* bytes */ 214 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 215 .callback = &ubsa_read_callback, 216 }, 217 218 [UBSA_INTR_DT_RD] = { 219 .type = UE_INTERRUPT, 220 .endpoint = UE_ADDR_ANY, 221 .direction = UE_DIR_IN, 222 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 223 .bufsize = 0, /* use wMaxPacketSize */ 224 .callback = &ubsa_intr_callback, 225 }, 226}; 227 228static const struct ucom_callback ubsa_callback = { 229 .ucom_cfg_get_status = &ubsa_cfg_get_status, 230 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 231 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 232 .ucom_cfg_set_break = &ubsa_cfg_set_break, 233 .ucom_cfg_param = &ubsa_cfg_param, 234 .ucom_pre_param = &ubsa_pre_param, 235 .ucom_start_read = &ubsa_start_read, 236 .ucom_stop_read = &ubsa_stop_read, 237 .ucom_start_write = &ubsa_start_write, 238 .ucom_stop_write = &ubsa_stop_write, 239 .ucom_poll = &ubsa_poll, 240}; 241 242static const struct usb_device_id ubsa_devs[] = { 243 /* AnyData ADU-500A */ 244 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 245 /* AnyData ADU-E100A/H */ 246 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 247 /* Axesstel MV100H */ 248 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 249 /* BELKIN F5U103 */ 250 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 251 /* BELKIN F5U120 */ 252 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 253 /* GoHubs GO-COM232 */ 254 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 255 /* GoHubs GO-COM232 */ 256 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 257 /* Peracom */ 258 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 259}; 260 261static device_method_t ubsa_methods[] = { 262 DEVMETHOD(device_probe, ubsa_probe), 263 DEVMETHOD(device_attach, ubsa_attach), 264 DEVMETHOD(device_detach, ubsa_detach), 265 {0, 0} 266}; 267 268static devclass_t ubsa_devclass; 269 270static driver_t ubsa_driver = { 271 .name = "ubsa", 272 .methods = ubsa_methods, 273 .size = sizeof(struct ubsa_softc), 274}; 275 276DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 277MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 278MODULE_DEPEND(ubsa, usb, 1, 1, 1); 279MODULE_VERSION(ubsa, 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 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 334 335 return (0); 336 337detach: 338 ubsa_detach(dev); 339 return (ENXIO); 340} 341 342static int 343ubsa_detach(device_t dev) 344{ 345 struct ubsa_softc *sc = device_get_softc(dev); 346 347 DPRINTF("sc=%p\n", sc); 348 349 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 350 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 351 mtx_destroy(&sc->sc_mtx); 352 353 return (0); 354} 355 356static void 357ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 358{ 359 struct usb_device_request req; 360 usb_error_t err; 361 362 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 363 req.bRequest = index; 364 USETW(req.wValue, value); 365 req.wIndex[0] = sc->sc_iface_no; 366 req.wIndex[1] = 0; 367 USETW(req.wLength, 0); 368 369 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 370 &req, NULL, 0, 1000); 371 if (err) { 372 DPRINTFN(0, "device request failed, err=%s " 373 "(ignored)\n", usbd_errstr(err)); 374 } 375} 376 377static void 378ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 379{ 380 struct ubsa_softc *sc = ucom->sc_parent; 381 382 DPRINTF("onoff = %d\n", onoff); 383 384 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 385} 386 387static void 388ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 389{ 390 struct ubsa_softc *sc = ucom->sc_parent; 391 392 DPRINTF("onoff = %d\n", onoff); 393 394 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 395} 396 397static void 398ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 399{ 400 struct ubsa_softc *sc = ucom->sc_parent; 401 402 DPRINTF("onoff = %d\n", onoff); 403 404 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 405} 406 407static int 408ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 409{ 410 411 DPRINTF("sc = %p\n", ucom->sc_parent); 412 413 switch (t->c_ospeed) { 414 case B0: 415 case B300: 416 case B600: 417 case B1200: 418 case B2400: 419 case B4800: 420 case B9600: 421 case B19200: 422 case B38400: 423 case B57600: 424 case B115200: 425 case B230400: 426 break; 427 default: 428 return (EINVAL); 429 } 430 return (0); 431} 432 433static void 434ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 435{ 436 struct ubsa_softc *sc = ucom->sc_parent; 437 uint16_t value = 0; 438 439 DPRINTF("sc = %p\n", sc); 440 441 switch (t->c_ospeed) { 442 case B0: 443 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 444 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 445 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 446 break; 447 case B300: 448 case B600: 449 case B1200: 450 case B2400: 451 case B4800: 452 case B9600: 453 case B19200: 454 case B38400: 455 case B57600: 456 case B115200: 457 case B230400: 458 value = B230400 / t->c_ospeed; 459 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 460 break; 461 default: 462 return; 463 } 464 465 if (t->c_cflag & PARENB) 466 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 467 else 468 value = UBSA_PARITY_NONE; 469 470 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 471 472 switch (t->c_cflag & CSIZE) { 473 case CS5: 474 value = 0; 475 break; 476 case CS6: 477 value = 1; 478 break; 479 case CS7: 480 value = 2; 481 break; 482 default: 483 case CS8: 484 value = 3; 485 break; 486 } 487 488 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 489 490 value = (t->c_cflag & CSTOPB) ? 1 : 0; 491 492 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 493 494 value = 0; 495 if (t->c_cflag & CRTSCTS) 496 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 497 498 if (t->c_iflag & (IXON | IXOFF)) 499 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 500 501 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 502} 503 504static void 505ubsa_start_read(struct ucom_softc *ucom) 506{ 507 struct ubsa_softc *sc = ucom->sc_parent; 508 509 /* start interrupt endpoint */ 510 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 511 512 /* start read endpoint */ 513 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 514} 515 516static void 517ubsa_stop_read(struct ucom_softc *ucom) 518{ 519 struct ubsa_softc *sc = ucom->sc_parent; 520 521 /* stop interrupt endpoint */ 522 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 523 524 /* stop read endpoint */ 525 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 526} 527 528static void 529ubsa_start_write(struct ucom_softc *ucom) 530{ 531 struct ubsa_softc *sc = ucom->sc_parent; 532 533 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 534} 535 536static void 537ubsa_stop_write(struct ucom_softc *ucom) 538{ 539 struct ubsa_softc *sc = ucom->sc_parent; 540 541 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 542} 543 544static void 545ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 546{ 547 struct ubsa_softc *sc = ucom->sc_parent; 548 549 DPRINTF("\n"); 550 551 *lsr = sc->sc_lsr; 552 *msr = sc->sc_msr; 553} 554 555static void 556ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 557{ 558 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 559 struct usb_page_cache *pc; 560 uint32_t actlen; 561 562 switch (USB_GET_STATE(xfer)) { 563 case USB_ST_SETUP: 564 case USB_ST_TRANSFERRED: 565tr_setup: 566 pc = usbd_xfer_get_frame(xfer, 0); 567 if (ucom_get_data(&sc->sc_ucom, pc, 0, 568 UBSA_BSIZE, &actlen)) { 569 570 usbd_xfer_set_frame_len(xfer, 0, actlen); 571 usbd_transfer_submit(xfer); 572 } 573 return; 574 575 default: /* Error */ 576 if (error != USB_ERR_CANCELLED) { 577 /* try to clear stall first */ 578 usbd_xfer_set_stall(xfer); 579 goto tr_setup; 580 } 581 return; 582 583 } 584} 585 586static void 587ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 588{ 589 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 590 struct usb_page_cache *pc; 591 int actlen; 592 593 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 594 595 switch (USB_GET_STATE(xfer)) { 596 case USB_ST_TRANSFERRED: 597 pc = usbd_xfer_get_frame(xfer, 0); 598 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 599 600 case USB_ST_SETUP: 601tr_setup: 602 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 603 usbd_transfer_submit(xfer); 604 return; 605 606 default: /* Error */ 607 if (error != USB_ERR_CANCELLED) { 608 /* try to clear stall first */ 609 usbd_xfer_set_stall(xfer); 610 goto tr_setup; 611 } 612 return; 613 614 } 615} 616 617static void 618ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 619{ 620 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 621 struct usb_page_cache *pc; 622 uint8_t buf[4]; 623 int actlen; 624 625 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 626 627 switch (USB_GET_STATE(xfer)) { 628 case USB_ST_TRANSFERRED: 629 630 if (actlen >= sizeof(buf)) { 631 pc = usbd_xfer_get_frame(xfer, 0); 632 usbd_copy_out(pc, 0, buf, sizeof(buf)); 633 634 /* 635 * incidentally, Belkin adapter status bits match 636 * UART 16550 bits 637 */ 638 sc->sc_lsr = buf[2]; 639 sc->sc_msr = buf[3]; 640 641 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 642 sc->sc_lsr, sc->sc_msr); 643 644 ucom_status_change(&sc->sc_ucom); 645 } else { 646 DPRINTF("ignoring short packet, %d bytes\n", actlen); 647 } 648 649 case USB_ST_SETUP: 650tr_setup: 651 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 652 usbd_transfer_submit(xfer); 653 return; 654 655 default: /* Error */ 656 if (error != USB_ERR_CANCELLED) { 657 /* try to clear stall first */ 658 usbd_xfer_set_stall(xfer); 659 goto tr_setup; 660 } 661 return; 662 663 } 664} 665 666static void 667ubsa_poll(struct ucom_softc *ucom) 668{ 669 struct ubsa_softc *sc = ucom->sc_parent; 670 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 671 672} 673