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 #if 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 *); 197 198 static 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 }; 227 228 static 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 }; 240 241 static const struct usb_device_id ubsa_devs[] = { 242 /* AnyData ADU-500A */ 243 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 244 /* AnyData ADU-E100A/H */ 245 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 246 /* Axesstel MV100H */ 247 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 248 /* BELKIN F5U103 */ 249 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 250 /* BELKIN F5U120 */ 251 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 252 /* GoHubs GO-COM232 */ 253 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 254 /* GoHubs GO-COM232 */ 255 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 256 /* Peracom */ 257 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 258 }; 259 260 static device_method_t ubsa_methods[] = { 261 DEVMETHOD(device_probe, ubsa_probe), 262 DEVMETHOD(device_attach, ubsa_attach), 263 DEVMETHOD(device_detach, ubsa_detach), 264 {0, 0} 265 }; 266 267 static devclass_t ubsa_devclass; 268 269 static driver_t ubsa_driver = { 270 .name = "ubsa", 271 .methods = ubsa_methods, 272 .size = sizeof(struct ubsa_softc), 273 }; 274 275 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 276 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 277 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 278 279 static int 280 ubsa_probe(device_t dev) 281 { 282 struct usb_attach_arg *uaa = device_get_ivars(dev); 283 284 if (uaa->usb_mode != USB_MODE_HOST) { 285 return (ENXIO); 286 } 287 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 288 return (ENXIO); 289 } 290 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 291 return (ENXIO); 292 } 293 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 294 } 295 296 static int 297 ubsa_attach(device_t dev) 298 { 299 struct usb_attach_arg *uaa = device_get_ivars(dev); 300 struct ubsa_softc *sc = device_get_softc(dev); 301 int error; 302 303 DPRINTF("sc=%p\n", sc); 304 305 device_set_usb_desc(dev); 306 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 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 return (0); 332 333 detach: 334 ubsa_detach(dev); 335 return (ENXIO); 336 } 337 338 static int 339 ubsa_detach(device_t dev) 340 { 341 struct ubsa_softc *sc = device_get_softc(dev); 342 343 DPRINTF("sc=%p\n", sc); 344 345 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 346 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 347 mtx_destroy(&sc->sc_mtx); 348 349 return (0); 350 } 351 352 static void 353 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 354 { 355 struct usb_device_request req; 356 usb_error_t err; 357 358 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 359 req.bRequest = index; 360 USETW(req.wValue, value); 361 req.wIndex[0] = sc->sc_iface_no; 362 req.wIndex[1] = 0; 363 USETW(req.wLength, 0); 364 365 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 366 &req, NULL, 0, 1000); 367 if (err) { 368 DPRINTFN(0, "device request failed, err=%s " 369 "(ignored)\n", usbd_errstr(err)); 370 } 371 } 372 373 static void 374 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 375 { 376 struct ubsa_softc *sc = ucom->sc_parent; 377 378 DPRINTF("onoff = %d\n", onoff); 379 380 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 381 } 382 383 static void 384 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 385 { 386 struct ubsa_softc *sc = ucom->sc_parent; 387 388 DPRINTF("onoff = %d\n", onoff); 389 390 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 391 } 392 393 static void 394 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 395 { 396 struct ubsa_softc *sc = ucom->sc_parent; 397 398 DPRINTF("onoff = %d\n", onoff); 399 400 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 401 } 402 403 static int 404 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 405 { 406 struct ubsa_softc *sc = ucom->sc_parent; 407 408 DPRINTF("sc = %p\n", sc); 409 410 switch (t->c_ospeed) { 411 case B0: 412 case B300: 413 case B600: 414 case B1200: 415 case B2400: 416 case B4800: 417 case B9600: 418 case B19200: 419 case B38400: 420 case B57600: 421 case B115200: 422 case B230400: 423 break; 424 default: 425 return (EINVAL); 426 } 427 return (0); 428 } 429 430 static void 431 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 432 { 433 struct ubsa_softc *sc = ucom->sc_parent; 434 uint16_t value = 0; 435 436 DPRINTF("sc = %p\n", sc); 437 438 switch (t->c_ospeed) { 439 case B0: 440 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 441 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 442 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 443 break; 444 case B300: 445 case B600: 446 case B1200: 447 case B2400: 448 case B4800: 449 case B9600: 450 case B19200: 451 case B38400: 452 case B57600: 453 case B115200: 454 case B230400: 455 value = B230400 / t->c_ospeed; 456 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 457 break; 458 default: 459 return; 460 } 461 462 if (t->c_cflag & PARENB) 463 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 464 else 465 value = UBSA_PARITY_NONE; 466 467 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 468 469 switch (t->c_cflag & CSIZE) { 470 case CS5: 471 value = 0; 472 break; 473 case CS6: 474 value = 1; 475 break; 476 case CS7: 477 value = 2; 478 break; 479 default: 480 case CS8: 481 value = 3; 482 break; 483 } 484 485 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 486 487 value = (t->c_cflag & CSTOPB) ? 1 : 0; 488 489 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 490 491 value = 0; 492 if (t->c_cflag & CRTSCTS) 493 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 494 495 if (t->c_iflag & (IXON | IXOFF)) 496 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 497 498 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 499 } 500 501 static void 502 ubsa_start_read(struct ucom_softc *ucom) 503 { 504 struct ubsa_softc *sc = ucom->sc_parent; 505 506 /* start interrupt endpoint */ 507 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 508 509 /* start read endpoint */ 510 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 511 } 512 513 static void 514 ubsa_stop_read(struct ucom_softc *ucom) 515 { 516 struct ubsa_softc *sc = ucom->sc_parent; 517 518 /* stop interrupt endpoint */ 519 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 520 521 /* stop read endpoint */ 522 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 523 } 524 525 static void 526 ubsa_start_write(struct ucom_softc *ucom) 527 { 528 struct ubsa_softc *sc = ucom->sc_parent; 529 530 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 531 } 532 533 static void 534 ubsa_stop_write(struct ucom_softc *ucom) 535 { 536 struct ubsa_softc *sc = ucom->sc_parent; 537 538 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 539 } 540 541 static void 542 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 543 { 544 struct ubsa_softc *sc = ucom->sc_parent; 545 546 DPRINTF("\n"); 547 548 *lsr = sc->sc_lsr; 549 *msr = sc->sc_msr; 550 } 551 552 static void 553 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 554 { 555 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 556 struct usb_page_cache *pc; 557 uint32_t actlen; 558 559 switch (USB_GET_STATE(xfer)) { 560 case USB_ST_SETUP: 561 case USB_ST_TRANSFERRED: 562 tr_setup: 563 pc = usbd_xfer_get_frame(xfer, 0); 564 if (ucom_get_data(&sc->sc_ucom, pc, 0, 565 UBSA_BSIZE, &actlen)) { 566 567 usbd_xfer_set_frame_len(xfer, 0, actlen); 568 usbd_transfer_submit(xfer); 569 } 570 return; 571 572 default: /* Error */ 573 if (error != USB_ERR_CANCELLED) { 574 /* try to clear stall first */ 575 usbd_xfer_set_stall(xfer); 576 goto tr_setup; 577 } 578 return; 579 580 } 581 } 582 583 static void 584 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 585 { 586 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 587 struct usb_page_cache *pc; 588 int actlen; 589 590 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 591 592 switch (USB_GET_STATE(xfer)) { 593 case USB_ST_TRANSFERRED: 594 pc = usbd_xfer_get_frame(xfer, 0); 595 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 596 597 case USB_ST_SETUP: 598 tr_setup: 599 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 600 usbd_transfer_submit(xfer); 601 return; 602 603 default: /* Error */ 604 if (error != USB_ERR_CANCELLED) { 605 /* try to clear stall first */ 606 usbd_xfer_set_stall(xfer); 607 goto tr_setup; 608 } 609 return; 610 611 } 612 } 613 614 static void 615 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 616 { 617 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 618 struct usb_page_cache *pc; 619 uint8_t buf[4]; 620 int actlen; 621 622 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 623 624 switch (USB_GET_STATE(xfer)) { 625 case USB_ST_TRANSFERRED: 626 627 if (actlen >= sizeof(buf)) { 628 pc = usbd_xfer_get_frame(xfer, 0); 629 usbd_copy_out(pc, 0, buf, sizeof(buf)); 630 631 /* 632 * incidentally, Belkin adapter status bits match 633 * UART 16550 bits 634 */ 635 sc->sc_lsr = buf[2]; 636 sc->sc_msr = buf[3]; 637 638 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 639 sc->sc_lsr, sc->sc_msr); 640 641 ucom_status_change(&sc->sc_ucom); 642 } else { 643 DPRINTF("ignoring short packet, %d bytes\n", actlen); 644 } 645 646 case USB_ST_SETUP: 647 tr_setup: 648 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 649 usbd_transfer_submit(xfer); 650 return; 651 652 default: /* Error */ 653 if (error != USB_ERR_CANCELLED) { 654 /* try to clear stall first */ 655 usbd_xfer_set_stall(xfer); 656 goto tr_setup; 657 } 658 return; 659 660 } 661 } 662