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 <bus/u4b/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 /* Peracom */ 253 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 254 }; 255 256 static device_method_t ubsa_methods[] = { 257 DEVMETHOD(device_probe, ubsa_probe), 258 DEVMETHOD(device_attach, ubsa_attach), 259 DEVMETHOD(device_detach, ubsa_detach), 260 DEVMETHOD_END 261 }; 262 263 static devclass_t ubsa_devclass; 264 265 static driver_t ubsa_driver = { 266 .name = "ubsa", 267 .methods = ubsa_methods, 268 .size = sizeof(struct ubsa_softc), 269 }; 270 271 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 272 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 273 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 274 MODULE_VERSION(ubsa, 1); 275 276 static int 277 ubsa_probe(device_t dev) 278 { 279 struct usb_attach_arg *uaa = device_get_ivars(dev); 280 281 if (uaa->usb_mode != USB_MODE_HOST) { 282 return (ENXIO); 283 } 284 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 285 return (ENXIO); 286 } 287 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 288 return (ENXIO); 289 } 290 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 291 } 292 293 static int 294 ubsa_attach(device_t dev) 295 { 296 struct usb_attach_arg *uaa = device_get_ivars(dev); 297 struct ubsa_softc *sc = device_get_softc(dev); 298 int error; 299 300 DPRINTF("sc=%p\n", sc); 301 302 device_set_usb_desc(dev); 303 lockinit(&sc->sc_lock, "ubsa", 0, LK_CANRECURSE); 304 305 sc->sc_udev = uaa->device; 306 sc->sc_iface_no = uaa->info.bIfaceNum; 307 sc->sc_iface_index = UBSA_IFACE_INDEX; 308 309 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 310 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_lock); 311 312 if (error) { 313 DPRINTF("could not allocate all pipes\n"); 314 goto detach; 315 } 316 /* clear stall at first run */ 317 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 318 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]); 319 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]); 320 lockmgr(&sc->sc_lock, LK_RELEASE); 321 322 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 323 &ubsa_callback, &sc->sc_lock); 324 if (error) { 325 DPRINTF("ucom_attach failed\n"); 326 goto detach; 327 } 328 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 329 330 return (0); 331 332 detach: 333 ubsa_detach(dev); 334 return (ENXIO); 335 } 336 337 static int 338 ubsa_detach(device_t dev) 339 { 340 struct ubsa_softc *sc = device_get_softc(dev); 341 342 DPRINTF("sc=%p\n", sc); 343 344 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 345 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 346 lockuninit(&sc->sc_lock); 347 348 return (0); 349 } 350 351 static void 352 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 353 { 354 struct usb_device_request req; 355 usb_error_t err; 356 357 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 358 req.bRequest = index; 359 USETW(req.wValue, value); 360 req.wIndex[0] = sc->sc_iface_no; 361 req.wIndex[1] = 0; 362 USETW(req.wLength, 0); 363 364 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 365 &req, NULL, 0, 1000); 366 if (err) { 367 DPRINTFN(0, "device request failed, err=%s " 368 "(ignored)\n", usbd_errstr(err)); 369 } 370 } 371 372 static void 373 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 374 { 375 struct ubsa_softc *sc = ucom->sc_parent; 376 377 DPRINTF("onoff = %d\n", onoff); 378 379 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 380 } 381 382 static void 383 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 384 { 385 struct ubsa_softc *sc = ucom->sc_parent; 386 387 DPRINTF("onoff = %d\n", onoff); 388 389 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 390 } 391 392 static void 393 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 394 { 395 struct ubsa_softc *sc = ucom->sc_parent; 396 397 DPRINTF("onoff = %d\n", onoff); 398 399 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 400 } 401 402 static int 403 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 404 { 405 406 DPRINTF("sc = %p\n", ucom->sc_parent); 407 408 switch (t->c_ospeed) { 409 case B0: 410 case B300: 411 case B600: 412 case B1200: 413 case B2400: 414 case B4800: 415 case B9600: 416 case B19200: 417 case B38400: 418 case B57600: 419 case B115200: 420 case B230400: 421 break; 422 default: 423 return (EINVAL); 424 } 425 return (0); 426 } 427 428 static void 429 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 430 { 431 struct ubsa_softc *sc = ucom->sc_parent; 432 uint16_t value = 0; 433 434 DPRINTF("sc = %p\n", sc); 435 436 switch (t->c_ospeed) { 437 case B0: 438 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 439 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 440 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 441 break; 442 case B300: 443 case B600: 444 case B1200: 445 case B2400: 446 case B4800: 447 case B9600: 448 case B19200: 449 case B38400: 450 case B57600: 451 case B115200: 452 case B230400: 453 value = B230400 / t->c_ospeed; 454 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 455 break; 456 default: 457 return; 458 } 459 460 if (t->c_cflag & PARENB) 461 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 462 else 463 value = UBSA_PARITY_NONE; 464 465 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 466 467 switch (t->c_cflag & CSIZE) { 468 case CS5: 469 value = 0; 470 break; 471 case CS6: 472 value = 1; 473 break; 474 case CS7: 475 value = 2; 476 break; 477 default: 478 case CS8: 479 value = 3; 480 break; 481 } 482 483 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 484 485 value = (t->c_cflag & CSTOPB) ? 1 : 0; 486 487 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 488 489 value = 0; 490 if (t->c_cflag & CRTSCTS) 491 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 492 493 if (t->c_iflag & (IXON | IXOFF)) 494 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 495 496 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 497 } 498 499 static void 500 ubsa_start_read(struct ucom_softc *ucom) 501 { 502 struct ubsa_softc *sc = ucom->sc_parent; 503 504 /* start interrupt endpoint */ 505 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 506 507 /* start read endpoint */ 508 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 509 } 510 511 static void 512 ubsa_stop_read(struct ucom_softc *ucom) 513 { 514 struct ubsa_softc *sc = ucom->sc_parent; 515 516 /* stop interrupt endpoint */ 517 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 518 519 /* stop read endpoint */ 520 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 521 } 522 523 static void 524 ubsa_start_write(struct ucom_softc *ucom) 525 { 526 struct ubsa_softc *sc = ucom->sc_parent; 527 528 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 529 } 530 531 static void 532 ubsa_stop_write(struct ucom_softc *ucom) 533 { 534 struct ubsa_softc *sc = ucom->sc_parent; 535 536 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 537 } 538 539 static void 540 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 541 { 542 struct ubsa_softc *sc = ucom->sc_parent; 543 544 DPRINTF("\n"); 545 546 *lsr = sc->sc_lsr; 547 *msr = sc->sc_msr; 548 } 549 550 static void 551 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 552 { 553 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 554 struct usb_page_cache *pc; 555 uint32_t actlen; 556 557 switch (USB_GET_STATE(xfer)) { 558 case USB_ST_SETUP: 559 case USB_ST_TRANSFERRED: 560 tr_setup: 561 pc = usbd_xfer_get_frame(xfer, 0); 562 if (ucom_get_data(&sc->sc_ucom, pc, 0, 563 UBSA_BSIZE, &actlen)) { 564 565 usbd_xfer_set_frame_len(xfer, 0, actlen); 566 usbd_transfer_submit(xfer); 567 } 568 return; 569 570 default: /* Error */ 571 if (error != USB_ERR_CANCELLED) { 572 /* try to clear stall first */ 573 usbd_xfer_set_stall(xfer); 574 goto tr_setup; 575 } 576 return; 577 578 } 579 } 580 581 static void 582 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 583 { 584 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 585 struct usb_page_cache *pc; 586 int actlen; 587 588 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 589 590 switch (USB_GET_STATE(xfer)) { 591 case USB_ST_TRANSFERRED: 592 pc = usbd_xfer_get_frame(xfer, 0); 593 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 594 595 case USB_ST_SETUP: 596 tr_setup: 597 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 598 usbd_transfer_submit(xfer); 599 return; 600 601 default: /* Error */ 602 if (error != USB_ERR_CANCELLED) { 603 /* try to clear stall first */ 604 usbd_xfer_set_stall(xfer); 605 goto tr_setup; 606 } 607 return; 608 609 } 610 } 611 612 static void 613 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 614 { 615 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 616 struct usb_page_cache *pc; 617 uint8_t buf[4]; 618 int actlen; 619 620 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 621 622 switch (USB_GET_STATE(xfer)) { 623 case USB_ST_TRANSFERRED: 624 625 if (actlen >= sizeof(buf)) { 626 pc = usbd_xfer_get_frame(xfer, 0); 627 usbd_copy_out(pc, 0, buf, sizeof(buf)); 628 629 /* 630 * incidentally, Belkin adapter status bits match 631 * UART 16550 bits 632 */ 633 sc->sc_lsr = buf[2]; 634 sc->sc_msr = buf[3]; 635 636 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 637 sc->sc_lsr, sc->sc_msr); 638 639 ucom_status_change(&sc->sc_ucom); 640 } else { 641 DPRINTF("ignoring short packet, %d bytes\n", actlen); 642 } 643 644 case USB_ST_SETUP: 645 tr_setup: 646 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 647 usbd_transfer_submit(xfer); 648 return; 649 650 default: /* Error */ 651 if (error != USB_ERR_CANCELLED) { 652 /* try to clear stall first */ 653 usbd_xfer_set_stall(xfer); 654 goto tr_setup; 655 } 656 return; 657 658 } 659 } 660 661 static void 662 ubsa_poll(struct ucom_softc *ucom) 663 { 664 struct ubsa_softc *sc = ucom->sc_parent; 665 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 666 667 } 668