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 /*- 28 * Copyright (c) 2001 The NetBSD Foundation, Inc. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to The NetBSD Foundation 32 * by Ichiro FUKUHARA (ichiro@ichiro.org). 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the NetBSD 45 * Foundation, Inc. and its contributors. 46 * 4. Neither the name of The NetBSD Foundation nor the names of its 47 * contributors may be used to endorse or promote products derived 48 * from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 51 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 52 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 54 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 60 * POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 #include <sys/stdint.h> 64 #include <sys/param.h> 65 #include <sys/queue.h> 66 #include <sys/types.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/bus.h> 70 #include <sys/module.h> 71 #include <sys/lock.h> 72 #include <sys/condvar.h> 73 #include <sys/sysctl.h> 74 #include <sys/unistd.h> 75 #include <sys/callout.h> 76 #include <sys/malloc.h> 77 #include <sys/priv.h> 78 79 #include <bus/u4b/usb.h> 80 #include <bus/u4b/usbdi.h> 81 #include <bus/u4b/usbdi_util.h> 82 #include "usbdevs.h" 83 84 #define USB_DEBUG_VAR ubsa_debug 85 #include <bus/u4b/usb_debug.h> 86 #include <bus/u4b/usb_process.h> 87 88 #include <bus/u4b/serial/usb_serial.h> 89 90 #ifdef USB_DEBUG 91 static int ubsa_debug = 0; 92 93 static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa"); 94 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW, 95 &ubsa_debug, 0, "ubsa debug level"); 96 #endif 97 98 #define UBSA_BSIZE 1024 /* bytes */ 99 100 #define UBSA_CONFIG_INDEX 0 101 #define UBSA_IFACE_INDEX 0 102 103 #define UBSA_REG_BAUDRATE 0x00 104 #define UBSA_REG_STOP_BITS 0x01 105 #define UBSA_REG_DATA_BITS 0x02 106 #define UBSA_REG_PARITY 0x03 107 #define UBSA_REG_DTR 0x0A 108 #define UBSA_REG_RTS 0x0B 109 #define UBSA_REG_BREAK 0x0C 110 #define UBSA_REG_FLOW_CTRL 0x10 111 112 #define UBSA_PARITY_NONE 0x00 113 #define UBSA_PARITY_EVEN 0x01 114 #define UBSA_PARITY_ODD 0x02 115 #define UBSA_PARITY_MARK 0x03 116 #define UBSA_PARITY_SPACE 0x04 117 118 #define UBSA_FLOW_NONE 0x0000 119 #define UBSA_FLOW_OCTS 0x0001 120 #define UBSA_FLOW_ODSR 0x0002 121 #define UBSA_FLOW_IDSR 0x0004 122 #define UBSA_FLOW_IDTR 0x0008 123 #define UBSA_FLOW_IRTS 0x0010 124 #define UBSA_FLOW_ORTS 0x0020 125 #define UBSA_FLOW_UNKNOWN 0x0040 126 #define UBSA_FLOW_OXON 0x0080 127 #define UBSA_FLOW_IXON 0x0100 128 129 /* line status register */ 130 #define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */ 131 #define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */ 132 #define UBSA_LSR_BI 0x10 /* Break detected */ 133 #define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */ 134 #define UBSA_LSR_PE 0x04 /* Parity error */ 135 #define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */ 136 #define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */ 137 #define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */ 138 139 /* modem status register */ 140 /* All deltas are from the last read of the MSR. */ 141 #define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */ 142 #define UBSA_MSR_RI 0x40 /* Current Ring Indicator */ 143 #define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */ 144 #define UBSA_MSR_CTS 0x10 /* Current Clear to Send */ 145 #define UBSA_MSR_DDCD 0x08 /* DCD has changed state */ 146 #define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */ 147 #define UBSA_MSR_DDSR 0x02 /* DSR has changed state */ 148 #define UBSA_MSR_DCTS 0x01 /* CTS has changed state */ 149 150 enum { 151 UBSA_BULK_DT_WR, 152 UBSA_BULK_DT_RD, 153 UBSA_INTR_DT_RD, 154 UBSA_N_TRANSFER, 155 }; 156 157 struct ubsa_softc { 158 struct ucom_super_softc sc_super_ucom; 159 struct ucom_softc sc_ucom; 160 161 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER]; 162 struct usb_device *sc_udev; 163 struct lock sc_lock; 164 165 uint8_t sc_iface_no; /* interface number */ 166 uint8_t sc_iface_index; /* interface index */ 167 uint8_t sc_lsr; /* local status register */ 168 uint8_t sc_msr; /* UBSA status register */ 169 }; 170 171 static device_probe_t ubsa_probe; 172 static device_attach_t ubsa_attach; 173 static device_detach_t ubsa_detach; 174 175 static usb_callback_t ubsa_write_callback; 176 static usb_callback_t ubsa_read_callback; 177 static usb_callback_t ubsa_intr_callback; 178 179 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 180 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 181 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 182 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 183 static int ubsa_pre_param(struct ucom_softc *, struct termios *); 184 static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 185 static void ubsa_start_read(struct ucom_softc *); 186 static void ubsa_stop_read(struct ucom_softc *); 187 static void ubsa_start_write(struct ucom_softc *); 188 static void ubsa_stop_write(struct ucom_softc *); 189 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 190 uint8_t *); 191 static void ubsa_poll(struct ucom_softc *ucom); 192 193 static 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 }; 222 223 static 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 }; 236 237 static const STRUCT_USB_HOST_ID ubsa_devs[] = { 238 /* AnyData ADU-500A */ 239 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 240 /* AnyData ADU-E100A/H */ 241 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 242 /* Axesstel MV100H */ 243 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 244 /* BELKIN F5U103 */ 245 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 246 /* BELKIN F5U120 */ 247 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 248 /* GoHubs GO-COM232 */ 249 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 250 /* GoHubs GO-COM232 */ 251 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 252 /* HandyTech's Braille displays */ 253 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_HANDYLINK, 0)}, 254 /* Peracom */ 255 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 256 }; 257 258 static device_method_t ubsa_methods[] = { 259 DEVMETHOD(device_probe, ubsa_probe), 260 DEVMETHOD(device_attach, ubsa_attach), 261 DEVMETHOD(device_detach, ubsa_detach), 262 DEVMETHOD_END 263 }; 264 265 static devclass_t ubsa_devclass; 266 267 static driver_t ubsa_driver = { 268 .name = "ubsa", 269 .methods = ubsa_methods, 270 .size = sizeof(struct ubsa_softc), 271 }; 272 273 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 274 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 275 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 276 MODULE_VERSION(ubsa, 1); 277 278 static int 279 ubsa_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 } 294 295 static int 296 ubsa_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 lockinit(&sc->sc_lock, "ubsa", 0, LK_CANRECURSE); 306 307 sc->sc_udev = uaa->device; 308 sc->sc_iface_no = uaa->info.bIfaceNum; 309 sc->sc_iface_index = UBSA_IFACE_INDEX; 310 311 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 312 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_lock); 313 314 if (error) { 315 DPRINTF("could not allocate all pipes\n"); 316 goto detach; 317 } 318 /* clear stall at first run */ 319 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 320 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 321 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 322 lockmgr(&sc->sc_lock, LK_RELEASE); 323 324 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 325 &ubsa_callback, &sc->sc_lock); 326 if (error) { 327 DPRINTF("ucom_attach failed\n"); 328 goto detach; 329 } 330 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 331 332 return (0); 333 334 detach: 335 ubsa_detach(dev); 336 return (ENXIO); 337 } 338 339 static int 340 ubsa_detach(device_t dev) 341 { 342 struct ubsa_softc *sc = device_get_softc(dev); 343 344 DPRINTF("sc=%p\n", sc); 345 346 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 347 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 348 lockuninit(&sc->sc_lock); 349 350 return (0); 351 } 352 353 static void 354 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 355 { 356 struct usb_device_request req; 357 usb_error_t err; 358 359 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 360 req.bRequest = index; 361 USETW(req.wValue, value); 362 req.wIndex[0] = sc->sc_iface_no; 363 req.wIndex[1] = 0; 364 USETW(req.wLength, 0); 365 366 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 367 &req, NULL, 0, 1000); 368 if (err) { 369 DPRINTFN(0, "device request failed, err=%s " 370 "(ignored)\n", usbd_errstr(err)); 371 } 372 } 373 374 static void 375 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 376 { 377 struct ubsa_softc *sc = ucom->sc_parent; 378 379 DPRINTF("onoff = %d\n", onoff); 380 381 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 382 } 383 384 static void 385 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 386 { 387 struct ubsa_softc *sc = ucom->sc_parent; 388 389 DPRINTF("onoff = %d\n", onoff); 390 391 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 392 } 393 394 static void 395 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 396 { 397 struct ubsa_softc *sc = ucom->sc_parent; 398 399 DPRINTF("onoff = %d\n", onoff); 400 401 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 402 } 403 404 static int 405 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 406 { 407 408 DPRINTF("sc = %p\n", ucom->sc_parent); 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 } 662 663 static void 664 ubsa_poll(struct ucom_softc *ucom) 665 { 666 struct ubsa_softc *sc = ucom->sc_parent; 667 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 668 669 } 670