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 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/stdint.h> 57 #include <sys/param.h> 58 #include <sys/queue.h> 59 #include <sys/types.h> 60 #include <sys/systm.h> 61 #include <sys/kernel.h> 62 #include <sys/bus.h> 63 #include <sys/module.h> 64 #include <sys/lock.h> 65 #include <sys/condvar.h> 66 #include <sys/sysctl.h> 67 #include <sys/unistd.h> 68 #include <sys/callout.h> 69 #include <sys/malloc.h> 70 #include <sys/priv.h> 71 72 #include <bus/u4b/usb.h> 73 #include <bus/u4b/usbdi.h> 74 #include <bus/u4b/usbdi_util.h> 75 #include "usbdevs.h" 76 77 #define USB_DEBUG_VAR ubsa_debug 78 #include <bus/u4b/usb_debug.h> 79 #include <bus/u4b/usb_process.h> 80 81 #include <bus/u4b/serial/usb_serial.h> 82 83 #ifdef USB_DEBUG 84 static int ubsa_debug = 0; 85 86 static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa"); 87 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW, 88 &ubsa_debug, 0, "ubsa debug level"); 89 #endif 90 91 #define UBSA_BSIZE 1024 /* bytes */ 92 93 #define UBSA_CONFIG_INDEX 0 94 #define UBSA_IFACE_INDEX 0 95 96 #define UBSA_REG_BAUDRATE 0x00 97 #define UBSA_REG_STOP_BITS 0x01 98 #define UBSA_REG_DATA_BITS 0x02 99 #define UBSA_REG_PARITY 0x03 100 #define UBSA_REG_DTR 0x0A 101 #define UBSA_REG_RTS 0x0B 102 #define UBSA_REG_BREAK 0x0C 103 #define UBSA_REG_FLOW_CTRL 0x10 104 105 #define UBSA_PARITY_NONE 0x00 106 #define UBSA_PARITY_EVEN 0x01 107 #define UBSA_PARITY_ODD 0x02 108 #define UBSA_PARITY_MARK 0x03 109 #define UBSA_PARITY_SPACE 0x04 110 111 #define UBSA_FLOW_NONE 0x0000 112 #define UBSA_FLOW_OCTS 0x0001 113 #define UBSA_FLOW_ODSR 0x0002 114 #define UBSA_FLOW_IDSR 0x0004 115 #define UBSA_FLOW_IDTR 0x0008 116 #define UBSA_FLOW_IRTS 0x0010 117 #define UBSA_FLOW_ORTS 0x0020 118 #define UBSA_FLOW_UNKNOWN 0x0040 119 #define UBSA_FLOW_OXON 0x0080 120 #define UBSA_FLOW_IXON 0x0100 121 122 /* line status register */ 123 #define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */ 124 #define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */ 125 #define UBSA_LSR_BI 0x10 /* Break detected */ 126 #define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */ 127 #define UBSA_LSR_PE 0x04 /* Parity error */ 128 #define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */ 129 #define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */ 130 #define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */ 131 132 /* modem status register */ 133 /* All deltas are from the last read of the MSR. */ 134 #define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */ 135 #define UBSA_MSR_RI 0x40 /* Current Ring Indicator */ 136 #define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */ 137 #define UBSA_MSR_CTS 0x10 /* Current Clear to Send */ 138 #define UBSA_MSR_DDCD 0x08 /* DCD has changed state */ 139 #define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */ 140 #define UBSA_MSR_DDSR 0x02 /* DSR has changed state */ 141 #define UBSA_MSR_DCTS 0x01 /* CTS has changed state */ 142 143 enum { 144 UBSA_BULK_DT_WR, 145 UBSA_BULK_DT_RD, 146 UBSA_INTR_DT_RD, 147 UBSA_N_TRANSFER, 148 }; 149 150 struct ubsa_softc { 151 struct ucom_super_softc sc_super_ucom; 152 struct ucom_softc sc_ucom; 153 154 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER]; 155 struct usb_device *sc_udev; 156 struct lock sc_lock; 157 158 uint8_t sc_iface_no; /* interface number */ 159 uint8_t sc_iface_index; /* interface index */ 160 uint8_t sc_lsr; /* local status register */ 161 uint8_t sc_msr; /* UBSA status register */ 162 }; 163 164 static device_probe_t ubsa_probe; 165 static device_attach_t ubsa_attach; 166 static device_detach_t ubsa_detach; 167 168 static usb_callback_t ubsa_write_callback; 169 static usb_callback_t ubsa_read_callback; 170 static usb_callback_t ubsa_intr_callback; 171 172 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 173 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 174 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 175 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 176 static int ubsa_pre_param(struct ucom_softc *, struct termios *); 177 static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 178 static void ubsa_start_read(struct ucom_softc *); 179 static void ubsa_stop_read(struct ucom_softc *); 180 static void ubsa_start_write(struct ucom_softc *); 181 static void ubsa_stop_write(struct ucom_softc *); 182 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 183 uint8_t *); 184 static void ubsa_poll(struct ucom_softc *ucom); 185 186 static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 187 188 [UBSA_BULK_DT_WR] = { 189 .type = UE_BULK, 190 .endpoint = UE_ADDR_ANY, 191 .direction = UE_DIR_OUT, 192 .bufsize = UBSA_BSIZE, /* bytes */ 193 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 194 .callback = &ubsa_write_callback, 195 }, 196 197 [UBSA_BULK_DT_RD] = { 198 .type = UE_BULK, 199 .endpoint = UE_ADDR_ANY, 200 .direction = UE_DIR_IN, 201 .bufsize = UBSA_BSIZE, /* bytes */ 202 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 203 .callback = &ubsa_read_callback, 204 }, 205 206 [UBSA_INTR_DT_RD] = { 207 .type = UE_INTERRUPT, 208 .endpoint = UE_ADDR_ANY, 209 .direction = UE_DIR_IN, 210 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 211 .bufsize = 0, /* use wMaxPacketSize */ 212 .callback = &ubsa_intr_callback, 213 }, 214 }; 215 216 static const struct ucom_callback ubsa_callback = { 217 .ucom_cfg_get_status = &ubsa_cfg_get_status, 218 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 219 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 220 .ucom_cfg_set_break = &ubsa_cfg_set_break, 221 .ucom_cfg_param = &ubsa_cfg_param, 222 .ucom_pre_param = &ubsa_pre_param, 223 .ucom_start_read = &ubsa_start_read, 224 .ucom_stop_read = &ubsa_stop_read, 225 .ucom_start_write = &ubsa_start_write, 226 .ucom_stop_write = &ubsa_stop_write, 227 .ucom_poll = &ubsa_poll, 228 }; 229 230 static const STRUCT_USB_HOST_ID ubsa_devs[] = { 231 /* AnyData ADU-500A */ 232 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 233 /* AnyData ADU-E100A/H */ 234 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 235 /* Axesstel MV100H */ 236 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 237 /* BELKIN F5U103 */ 238 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 239 /* BELKIN F5U120 */ 240 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 241 /* GoHubs GO-COM232 */ 242 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 243 /* GoHubs GO-COM232 */ 244 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 245 /* HandyTech's Braille displays */ 246 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_HANDYLINK, 0)}, 247 /* Peracom */ 248 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 249 }; 250 251 static device_method_t ubsa_methods[] = { 252 DEVMETHOD(device_probe, ubsa_probe), 253 DEVMETHOD(device_attach, ubsa_attach), 254 DEVMETHOD(device_detach, ubsa_detach), 255 DEVMETHOD_END 256 }; 257 258 static devclass_t ubsa_devclass; 259 260 static driver_t ubsa_driver = { 261 .name = "ubsa", 262 .methods = ubsa_methods, 263 .size = sizeof(struct ubsa_softc), 264 }; 265 266 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, NULL); 267 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 268 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 269 MODULE_VERSION(ubsa, 1); 270 271 static int 272 ubsa_probe(device_t dev) 273 { 274 struct usb_attach_arg *uaa = device_get_ivars(dev); 275 276 if (uaa->usb_mode != USB_MODE_HOST) { 277 return (ENXIO); 278 } 279 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 280 return (ENXIO); 281 } 282 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 283 return (ENXIO); 284 } 285 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 286 } 287 288 static int 289 ubsa_attach(device_t dev) 290 { 291 struct usb_attach_arg *uaa = device_get_ivars(dev); 292 struct ubsa_softc *sc = device_get_softc(dev); 293 int error; 294 295 DPRINTF("sc=%p\n", sc); 296 297 device_set_usb_desc(dev); 298 lockinit(&sc->sc_lock, "ubsa", 0, LK_CANRECURSE); 299 300 sc->sc_udev = uaa->device; 301 sc->sc_iface_no = uaa->info.bIfaceNum; 302 sc->sc_iface_index = UBSA_IFACE_INDEX; 303 304 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 305 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_lock); 306 307 if (error) { 308 DPRINTF("could not allocate all pipes\n"); 309 goto detach; 310 } 311 /* clear stall at first run */ 312 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 313 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 314 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 315 lockmgr(&sc->sc_lock, LK_RELEASE); 316 317 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 318 &ubsa_callback, &sc->sc_lock); 319 if (error) { 320 DPRINTF("ucom_attach failed\n"); 321 goto detach; 322 } 323 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 324 325 return (0); 326 327 detach: 328 ubsa_detach(dev); 329 return (ENXIO); 330 } 331 332 static int 333 ubsa_detach(device_t dev) 334 { 335 struct ubsa_softc *sc = device_get_softc(dev); 336 337 DPRINTF("sc=%p\n", sc); 338 339 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 340 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 341 lockuninit(&sc->sc_lock); 342 343 return (0); 344 } 345 346 static void 347 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 348 { 349 struct usb_device_request req; 350 usb_error_t err; 351 352 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 353 req.bRequest = index; 354 USETW(req.wValue, value); 355 req.wIndex[0] = sc->sc_iface_no; 356 req.wIndex[1] = 0; 357 USETW(req.wLength, 0); 358 359 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 360 &req, NULL, 0, 1000); 361 if (err) { 362 DPRINTFN(0, "device request failed, err=%s " 363 "(ignored)\n", usbd_errstr(err)); 364 } 365 } 366 367 static void 368 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 369 { 370 struct ubsa_softc *sc = ucom->sc_parent; 371 372 DPRINTF("onoff = %d\n", onoff); 373 374 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 375 } 376 377 static void 378 ubsa_cfg_set_rts(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_RTS, onoff ? 1 : 0); 385 } 386 387 static void 388 ubsa_cfg_set_break(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_BREAK, onoff ? 1 : 0); 395 } 396 397 static int 398 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 399 { 400 401 DPRINTF("sc = %p\n", ucom->sc_parent); 402 403 switch (t->c_ospeed) { 404 case B0: 405 case B300: 406 case B600: 407 case B1200: 408 case B2400: 409 case B4800: 410 case B9600: 411 case B19200: 412 case B38400: 413 case B57600: 414 case B115200: 415 case B230400: 416 break; 417 default: 418 return (EINVAL); 419 } 420 return (0); 421 } 422 423 static void 424 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 425 { 426 struct ubsa_softc *sc = ucom->sc_parent; 427 uint16_t value = 0; 428 429 DPRINTF("sc = %p\n", sc); 430 431 switch (t->c_ospeed) { 432 case B0: 433 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 434 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 435 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 436 break; 437 case B300: 438 case B600: 439 case B1200: 440 case B2400: 441 case B4800: 442 case B9600: 443 case B19200: 444 case B38400: 445 case B57600: 446 case B115200: 447 case B230400: 448 value = B230400 / t->c_ospeed; 449 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 450 break; 451 default: 452 return; 453 } 454 455 if (t->c_cflag & PARENB) 456 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 457 else 458 value = UBSA_PARITY_NONE; 459 460 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 461 462 switch (t->c_cflag & CSIZE) { 463 case CS5: 464 value = 0; 465 break; 466 case CS6: 467 value = 1; 468 break; 469 case CS7: 470 value = 2; 471 break; 472 default: 473 case CS8: 474 value = 3; 475 break; 476 } 477 478 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 479 480 value = (t->c_cflag & CSTOPB) ? 1 : 0; 481 482 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 483 484 value = 0; 485 if (t->c_cflag & CRTSCTS) 486 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 487 488 if (t->c_iflag & (IXON | IXOFF)) 489 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 490 491 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 492 } 493 494 static void 495 ubsa_start_read(struct ucom_softc *ucom) 496 { 497 struct ubsa_softc *sc = ucom->sc_parent; 498 499 /* start interrupt endpoint */ 500 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 501 502 /* start read endpoint */ 503 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 504 } 505 506 static void 507 ubsa_stop_read(struct ucom_softc *ucom) 508 { 509 struct ubsa_softc *sc = ucom->sc_parent; 510 511 /* stop interrupt endpoint */ 512 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 513 514 /* stop read endpoint */ 515 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 516 } 517 518 static void 519 ubsa_start_write(struct ucom_softc *ucom) 520 { 521 struct ubsa_softc *sc = ucom->sc_parent; 522 523 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 524 } 525 526 static void 527 ubsa_stop_write(struct ucom_softc *ucom) 528 { 529 struct ubsa_softc *sc = ucom->sc_parent; 530 531 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 532 } 533 534 static void 535 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 536 { 537 struct ubsa_softc *sc = ucom->sc_parent; 538 539 DPRINTF("\n"); 540 541 *lsr = sc->sc_lsr; 542 *msr = sc->sc_msr; 543 } 544 545 static void 546 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 547 { 548 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 549 struct usb_page_cache *pc; 550 uint32_t actlen; 551 552 switch (USB_GET_STATE(xfer)) { 553 case USB_ST_SETUP: 554 case USB_ST_TRANSFERRED: 555 tr_setup: 556 pc = usbd_xfer_get_frame(xfer, 0); 557 if (ucom_get_data(&sc->sc_ucom, pc, 0, 558 UBSA_BSIZE, &actlen)) { 559 560 usbd_xfer_set_frame_len(xfer, 0, actlen); 561 usbd_transfer_submit(xfer); 562 } 563 return; 564 565 default: /* Error */ 566 if (error != USB_ERR_CANCELLED) { 567 /* try to clear stall first */ 568 usbd_xfer_set_stall(xfer); 569 goto tr_setup; 570 } 571 return; 572 573 } 574 } 575 576 static void 577 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 578 { 579 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 580 struct usb_page_cache *pc; 581 int actlen; 582 583 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 584 585 switch (USB_GET_STATE(xfer)) { 586 case USB_ST_TRANSFERRED: 587 pc = usbd_xfer_get_frame(xfer, 0); 588 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 589 590 case USB_ST_SETUP: 591 tr_setup: 592 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 593 usbd_transfer_submit(xfer); 594 return; 595 596 default: /* Error */ 597 if (error != USB_ERR_CANCELLED) { 598 /* try to clear stall first */ 599 usbd_xfer_set_stall(xfer); 600 goto tr_setup; 601 } 602 return; 603 604 } 605 } 606 607 static void 608 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 609 { 610 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 611 struct usb_page_cache *pc; 612 uint8_t buf[4]; 613 int actlen; 614 615 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 616 617 switch (USB_GET_STATE(xfer)) { 618 case USB_ST_TRANSFERRED: 619 620 if (actlen >= sizeof(buf)) { 621 pc = usbd_xfer_get_frame(xfer, 0); 622 usbd_copy_out(pc, 0, buf, sizeof(buf)); 623 624 /* 625 * incidentally, Belkin adapter status bits match 626 * UART 16550 bits 627 */ 628 sc->sc_lsr = buf[2]; 629 sc->sc_msr = buf[3]; 630 631 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 632 sc->sc_lsr, sc->sc_msr); 633 634 ucom_status_change(&sc->sc_ucom); 635 } else { 636 DPRINTF("ignoring short packet, %d bytes\n", actlen); 637 } 638 639 case USB_ST_SETUP: 640 tr_setup: 641 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 642 usbd_transfer_submit(xfer); 643 return; 644 645 default: /* Error */ 646 if (error != USB_ERR_CANCELLED) { 647 /* try to clear stall first */ 648 usbd_xfer_set_stall(xfer); 649 goto tr_setup; 650 } 651 return; 652 653 } 654 } 655 656 static void 657 ubsa_poll(struct ucom_softc *ucom) 658 { 659 struct ubsa_softc *sc = ucom->sc_parent; 660 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 661 662 } 663