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("$FreeBSD$"); 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 97 static int ubsa_debug = 0; 98 99 SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa"); 100 SYSCTL_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 */ 155 156 enum { 157 UBSA_BULK_DT_WR, 158 UBSA_BULK_DT_RD, 159 UBSA_INTR_DT_RD, 160 UBSA_N_TRANSFER, 161 }; 162 163 struct 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 }; 176 177 static device_probe_t ubsa_probe; 178 static device_attach_t ubsa_attach; 179 static device_detach_t ubsa_detach; 180 181 static usb_callback_t ubsa_write_callback; 182 static usb_callback_t ubsa_read_callback; 183 static usb_callback_t ubsa_intr_callback; 184 185 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 186 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 187 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 188 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 189 static int ubsa_pre_param(struct ucom_softc *, struct termios *); 190 static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 191 static void ubsa_start_read(struct ucom_softc *); 192 static void ubsa_stop_read(struct ucom_softc *); 193 static void ubsa_start_write(struct ucom_softc *); 194 static void ubsa_stop_write(struct ucom_softc *); 195 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 196 uint8_t *); 197 static void ubsa_poll(struct ucom_softc *ucom); 198 199 static 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 }; 228 229 static 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 }; 242 243 static 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 }; 261 262 static 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 }; 268 269 static devclass_t ubsa_devclass; 270 271 static driver_t ubsa_driver = { 272 .name = "ubsa", 273 .methods = ubsa_methods, 274 .size = sizeof(struct ubsa_softc), 275 }; 276 277 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 278 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 279 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 280 MODULE_VERSION(ubsa, 1); 281 282 static int 283 ubsa_probe(device_t dev) 284 { 285 struct usb_attach_arg *uaa = device_get_ivars(dev); 286 287 if (uaa->usb_mode != USB_MODE_HOST) { 288 return (ENXIO); 289 } 290 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 291 return (ENXIO); 292 } 293 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 294 return (ENXIO); 295 } 296 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 297 } 298 299 static int 300 ubsa_attach(device_t dev) 301 { 302 struct usb_attach_arg *uaa = device_get_ivars(dev); 303 struct ubsa_softc *sc = device_get_softc(dev); 304 int error; 305 306 DPRINTF("sc=%p\n", sc); 307 308 device_set_usb_desc(dev); 309 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 310 311 sc->sc_udev = uaa->device; 312 sc->sc_iface_no = uaa->info.bIfaceNum; 313 sc->sc_iface_index = UBSA_IFACE_INDEX; 314 315 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 316 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx); 317 318 if (error) { 319 DPRINTF("could not allocate all pipes\n"); 320 goto detach; 321 } 322 /* clear stall at first run */ 323 mtx_lock(&sc->sc_mtx); 324 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 325 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 326 mtx_unlock(&sc->sc_mtx); 327 328 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 329 &ubsa_callback, &sc->sc_mtx); 330 if (error) { 331 DPRINTF("ucom_attach failed\n"); 332 goto detach; 333 } 334 return (0); 335 336 detach: 337 ubsa_detach(dev); 338 return (ENXIO); 339 } 340 341 static int 342 ubsa_detach(device_t dev) 343 { 344 struct ubsa_softc *sc = device_get_softc(dev); 345 346 DPRINTF("sc=%p\n", sc); 347 348 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 349 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 350 mtx_destroy(&sc->sc_mtx); 351 352 return (0); 353 } 354 355 static void 356 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 357 { 358 struct usb_device_request req; 359 usb_error_t err; 360 361 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 362 req.bRequest = index; 363 USETW(req.wValue, value); 364 req.wIndex[0] = sc->sc_iface_no; 365 req.wIndex[1] = 0; 366 USETW(req.wLength, 0); 367 368 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 369 &req, NULL, 0, 1000); 370 if (err) { 371 DPRINTFN(0, "device request failed, err=%s " 372 "(ignored)\n", usbd_errstr(err)); 373 } 374 } 375 376 static void 377 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 378 { 379 struct ubsa_softc *sc = ucom->sc_parent; 380 381 DPRINTF("onoff = %d\n", onoff); 382 383 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 384 } 385 386 static void 387 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 388 { 389 struct ubsa_softc *sc = ucom->sc_parent; 390 391 DPRINTF("onoff = %d\n", onoff); 392 393 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 394 } 395 396 static void 397 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 398 { 399 struct ubsa_softc *sc = ucom->sc_parent; 400 401 DPRINTF("onoff = %d\n", onoff); 402 403 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 404 } 405 406 static int 407 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 408 { 409 410 DPRINTF("sc = %p\n", ucom->sc_parent); 411 412 switch (t->c_ospeed) { 413 case B0: 414 case B300: 415 case B600: 416 case B1200: 417 case B2400: 418 case B4800: 419 case B9600: 420 case B19200: 421 case B38400: 422 case B57600: 423 case B115200: 424 case B230400: 425 break; 426 default: 427 return (EINVAL); 428 } 429 return (0); 430 } 431 432 static void 433 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 434 { 435 struct ubsa_softc *sc = ucom->sc_parent; 436 uint16_t value = 0; 437 438 DPRINTF("sc = %p\n", sc); 439 440 switch (t->c_ospeed) { 441 case B0: 442 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 443 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 444 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 445 break; 446 case B300: 447 case B600: 448 case B1200: 449 case B2400: 450 case B4800: 451 case B9600: 452 case B19200: 453 case B38400: 454 case B57600: 455 case B115200: 456 case B230400: 457 value = B230400 / t->c_ospeed; 458 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 459 break; 460 default: 461 return; 462 } 463 464 if (t->c_cflag & PARENB) 465 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 466 else 467 value = UBSA_PARITY_NONE; 468 469 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 470 471 switch (t->c_cflag & CSIZE) { 472 case CS5: 473 value = 0; 474 break; 475 case CS6: 476 value = 1; 477 break; 478 case CS7: 479 value = 2; 480 break; 481 default: 482 case CS8: 483 value = 3; 484 break; 485 } 486 487 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 488 489 value = (t->c_cflag & CSTOPB) ? 1 : 0; 490 491 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 492 493 value = 0; 494 if (t->c_cflag & CRTSCTS) 495 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 496 497 if (t->c_iflag & (IXON | IXOFF)) 498 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 499 500 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 501 } 502 503 static void 504 ubsa_start_read(struct ucom_softc *ucom) 505 { 506 struct ubsa_softc *sc = ucom->sc_parent; 507 508 /* start interrupt endpoint */ 509 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 510 511 /* start read endpoint */ 512 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 513 } 514 515 static void 516 ubsa_stop_read(struct ucom_softc *ucom) 517 { 518 struct ubsa_softc *sc = ucom->sc_parent; 519 520 /* stop interrupt endpoint */ 521 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 522 523 /* stop read endpoint */ 524 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 525 } 526 527 static void 528 ubsa_start_write(struct ucom_softc *ucom) 529 { 530 struct ubsa_softc *sc = ucom->sc_parent; 531 532 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 533 } 534 535 static void 536 ubsa_stop_write(struct ucom_softc *ucom) 537 { 538 struct ubsa_softc *sc = ucom->sc_parent; 539 540 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 541 } 542 543 static void 544 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 545 { 546 struct ubsa_softc *sc = ucom->sc_parent; 547 548 DPRINTF("\n"); 549 550 *lsr = sc->sc_lsr; 551 *msr = sc->sc_msr; 552 } 553 554 static void 555 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 556 { 557 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 558 struct usb_page_cache *pc; 559 uint32_t actlen; 560 561 switch (USB_GET_STATE(xfer)) { 562 case USB_ST_SETUP: 563 case USB_ST_TRANSFERRED: 564 tr_setup: 565 pc = usbd_xfer_get_frame(xfer, 0); 566 if (ucom_get_data(&sc->sc_ucom, pc, 0, 567 UBSA_BSIZE, &actlen)) { 568 569 usbd_xfer_set_frame_len(xfer, 0, actlen); 570 usbd_transfer_submit(xfer); 571 } 572 return; 573 574 default: /* Error */ 575 if (error != USB_ERR_CANCELLED) { 576 /* try to clear stall first */ 577 usbd_xfer_set_stall(xfer); 578 goto tr_setup; 579 } 580 return; 581 582 } 583 } 584 585 static void 586 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 587 { 588 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 589 struct usb_page_cache *pc; 590 int actlen; 591 592 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 593 594 switch (USB_GET_STATE(xfer)) { 595 case USB_ST_TRANSFERRED: 596 pc = usbd_xfer_get_frame(xfer, 0); 597 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 598 599 case USB_ST_SETUP: 600 tr_setup: 601 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 602 usbd_transfer_submit(xfer); 603 return; 604 605 default: /* Error */ 606 if (error != USB_ERR_CANCELLED) { 607 /* try to clear stall first */ 608 usbd_xfer_set_stall(xfer); 609 goto tr_setup; 610 } 611 return; 612 613 } 614 } 615 616 static void 617 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 618 { 619 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 620 struct usb_page_cache *pc; 621 uint8_t buf[4]; 622 int actlen; 623 624 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 625 626 switch (USB_GET_STATE(xfer)) { 627 case USB_ST_TRANSFERRED: 628 629 if (actlen >= sizeof(buf)) { 630 pc = usbd_xfer_get_frame(xfer, 0); 631 usbd_copy_out(pc, 0, buf, sizeof(buf)); 632 633 /* 634 * incidentally, Belkin adapter status bits match 635 * UART 16550 bits 636 */ 637 sc->sc_lsr = buf[2]; 638 sc->sc_msr = buf[3]; 639 640 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 641 sc->sc_lsr, sc->sc_msr); 642 643 ucom_status_change(&sc->sc_ucom); 644 } else { 645 DPRINTF("ignoring short packet, %d bytes\n", actlen); 646 } 647 648 case USB_ST_SETUP: 649 tr_setup: 650 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 651 usbd_transfer_submit(xfer); 652 return; 653 654 default: /* Error */ 655 if (error != USB_ERR_CANCELLED) { 656 /* try to clear stall first */ 657 usbd_xfer_set_stall(xfer); 658 goto tr_setup; 659 } 660 return; 661 662 } 663 } 664 665 static void 666 ubsa_poll(struct ucom_softc *ucom) 667 { 668 struct ubsa_softc *sc = ucom->sc_parent; 669 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 670 671 } 672