1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 /*- 31 * Copyright (c) 2001 The NetBSD Foundation, Inc. 32 * All rights reserved. 33 * 34 * This code is derived from software contributed to The NetBSD Foundation 35 * by Ichiro FUKUHARA (ichiro@ichiro.org). 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 47 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 48 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 49 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 50 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 51 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 52 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 53 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 54 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 56 * POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 #include <sys/stdint.h> 60 #include <sys/stddef.h> 61 #include <sys/param.h> 62 #include <sys/queue.h> 63 #include <sys/types.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/bus.h> 67 #include <sys/module.h> 68 #include <sys/lock.h> 69 #include <sys/mutex.h> 70 #include <sys/condvar.h> 71 #include <sys/sysctl.h> 72 #include <sys/sx.h> 73 #include <sys/unistd.h> 74 #include <sys/callout.h> 75 #include <sys/malloc.h> 76 #include <sys/priv.h> 77 78 #include <dev/usb/usb.h> 79 #include <dev/usb/usbdi.h> 80 #include <dev/usb/usbdi_util.h> 81 #include "usbdevs.h" 82 83 #define USB_DEBUG_VAR ubsa_debug 84 #include <dev/usb/usb_debug.h> 85 #include <dev/usb/usb_process.h> 86 87 #include <dev/usb/serial/usb_serial.h> 88 89 #ifdef USB_DEBUG 90 static int ubsa_debug = 0; 91 92 static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 93 "USB ubsa"); 94 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RWTUN, 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 mtx sc_mtx; 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 static void ubsa_free_softc(struct ubsa_softc *); 175 176 static usb_callback_t ubsa_write_callback; 177 static usb_callback_t ubsa_read_callback; 178 static usb_callback_t ubsa_intr_callback; 179 180 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 181 static void ubsa_free(struct ucom_softc *); 182 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 183 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 184 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 185 static int ubsa_pre_param(struct ucom_softc *, struct termios *); 186 static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 187 static void ubsa_start_read(struct ucom_softc *); 188 static void ubsa_stop_read(struct ucom_softc *); 189 static void ubsa_start_write(struct ucom_softc *); 190 static void ubsa_stop_write(struct ucom_softc *); 191 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 192 uint8_t *); 193 static void ubsa_poll(struct ucom_softc *ucom); 194 195 static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 196 [UBSA_BULK_DT_WR] = { 197 .type = UE_BULK, 198 .endpoint = UE_ADDR_ANY, 199 .direction = UE_DIR_OUT, 200 .bufsize = UBSA_BSIZE, /* bytes */ 201 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 202 .callback = &ubsa_write_callback, 203 }, 204 205 [UBSA_BULK_DT_RD] = { 206 .type = UE_BULK, 207 .endpoint = UE_ADDR_ANY, 208 .direction = UE_DIR_IN, 209 .bufsize = UBSA_BSIZE, /* bytes */ 210 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 211 .callback = &ubsa_read_callback, 212 }, 213 214 [UBSA_INTR_DT_RD] = { 215 .type = UE_INTERRUPT, 216 .endpoint = UE_ADDR_ANY, 217 .direction = UE_DIR_IN, 218 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 219 .bufsize = 0, /* use wMaxPacketSize */ 220 .callback = &ubsa_intr_callback, 221 }, 222 }; 223 224 static const struct ucom_callback ubsa_callback = { 225 .ucom_cfg_get_status = &ubsa_cfg_get_status, 226 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 227 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 228 .ucom_cfg_set_break = &ubsa_cfg_set_break, 229 .ucom_cfg_param = &ubsa_cfg_param, 230 .ucom_pre_param = &ubsa_pre_param, 231 .ucom_start_read = &ubsa_start_read, 232 .ucom_stop_read = &ubsa_stop_read, 233 .ucom_start_write = &ubsa_start_write, 234 .ucom_stop_write = &ubsa_stop_write, 235 .ucom_poll = &ubsa_poll, 236 .ucom_free = &ubsa_free, 237 }; 238 239 static const STRUCT_USB_HOST_ID ubsa_devs[] = { 240 /* AnyData ADU-500A */ 241 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 242 /* AnyData ADU-E100A/H */ 243 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 244 /* Axesstel MV100H */ 245 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 246 /* BELKIN F5U103 */ 247 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 248 /* BELKIN F5U120 */ 249 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 250 /* GoHubs GO-COM232 */ 251 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 252 /* GoHubs GO-COM232 */ 253 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 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 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, NULL, NULL); 272 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 273 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 274 MODULE_VERSION(ubsa, 1); 275 USB_PNP_HOST_INFO(ubsa_devs); 276 277 static int 278 ubsa_probe(device_t dev) 279 { 280 struct usb_attach_arg *uaa = device_get_ivars(dev); 281 282 if (uaa->usb_mode != USB_MODE_HOST) { 283 return (ENXIO); 284 } 285 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 286 return (ENXIO); 287 } 288 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 289 return (ENXIO); 290 } 291 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 292 } 293 294 static int 295 ubsa_attach(device_t dev) 296 { 297 struct usb_attach_arg *uaa = device_get_ivars(dev); 298 struct ubsa_softc *sc = device_get_softc(dev); 299 int error; 300 301 DPRINTF("sc=%p\n", sc); 302 303 device_set_usb_desc(dev); 304 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 305 ucom_ref(&sc->sc_super_ucom); 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_mtx); 313 314 if (error) { 315 DPRINTF("could not allocate all pipes\n"); 316 goto detach; 317 } 318 /* clear stall at first run */ 319 mtx_lock(&sc->sc_mtx); 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 mtx_unlock(&sc->sc_mtx); 323 324 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 325 &ubsa_callback, &sc->sc_mtx); 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); 348 349 device_claim_softc(dev); 350 351 ubsa_free_softc(sc); 352 353 return (0); 354 } 355 356 UCOM_UNLOAD_DRAIN(ubsa); 357 358 static void 359 ubsa_free_softc(struct ubsa_softc *sc) 360 { 361 if (ucom_unref(&sc->sc_super_ucom)) { 362 mtx_destroy(&sc->sc_mtx); 363 device_free_softc(sc); 364 } 365 } 366 367 static void 368 ubsa_free(struct ucom_softc *ucom) 369 { 370 ubsa_free_softc(ucom->sc_parent); 371 } 372 373 static void 374 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 375 { 376 struct usb_device_request req; 377 usb_error_t err; 378 379 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 380 req.bRequest = index; 381 USETW(req.wValue, value); 382 req.wIndex[0] = sc->sc_iface_no; 383 req.wIndex[1] = 0; 384 USETW(req.wLength, 0); 385 386 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 387 &req, NULL, 0, 1000); 388 if (err) { 389 DPRINTFN(0, "device request failed, err=%s " 390 "(ignored)\n", usbd_errstr(err)); 391 } 392 } 393 394 static void 395 ubsa_cfg_set_dtr(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_DTR, onoff ? 1 : 0); 402 } 403 404 static void 405 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 406 { 407 struct ubsa_softc *sc = ucom->sc_parent; 408 409 DPRINTF("onoff = %d\n", onoff); 410 411 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 412 } 413 414 static void 415 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 416 { 417 struct ubsa_softc *sc = ucom->sc_parent; 418 419 DPRINTF("onoff = %d\n", onoff); 420 421 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 422 } 423 424 static int 425 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 426 { 427 428 DPRINTF("sc = %p\n", ucom->sc_parent); 429 430 switch (t->c_ospeed) { 431 case B0: 432 case B300: 433 case B600: 434 case B1200: 435 case B2400: 436 case B4800: 437 case B9600: 438 case B19200: 439 case B38400: 440 case B57600: 441 case B115200: 442 case B230400: 443 break; 444 default: 445 return (EINVAL); 446 } 447 return (0); 448 } 449 450 static void 451 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 452 { 453 struct ubsa_softc *sc = ucom->sc_parent; 454 uint16_t value = 0; 455 456 DPRINTF("sc = %p\n", sc); 457 458 switch (t->c_ospeed) { 459 case B0: 460 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 461 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 462 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 463 break; 464 case B300: 465 case B600: 466 case B1200: 467 case B2400: 468 case B4800: 469 case B9600: 470 case B19200: 471 case B38400: 472 case B57600: 473 case B115200: 474 case B230400: 475 value = B230400 / t->c_ospeed; 476 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 477 break; 478 default: 479 return; 480 } 481 482 if (t->c_cflag & PARENB) 483 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 484 else 485 value = UBSA_PARITY_NONE; 486 487 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 488 489 switch (t->c_cflag & CSIZE) { 490 case CS5: 491 value = 0; 492 break; 493 case CS6: 494 value = 1; 495 break; 496 case CS7: 497 value = 2; 498 break; 499 default: 500 case CS8: 501 value = 3; 502 break; 503 } 504 505 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 506 507 value = (t->c_cflag & CSTOPB) ? 1 : 0; 508 509 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 510 511 value = 0; 512 if (t->c_cflag & CRTSCTS) 513 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 514 515 if (t->c_iflag & (IXON | IXOFF)) 516 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 517 518 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 519 } 520 521 static void 522 ubsa_start_read(struct ucom_softc *ucom) 523 { 524 struct ubsa_softc *sc = ucom->sc_parent; 525 526 /* start interrupt endpoint */ 527 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 528 529 /* start read endpoint */ 530 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 531 } 532 533 static void 534 ubsa_stop_read(struct ucom_softc *ucom) 535 { 536 struct ubsa_softc *sc = ucom->sc_parent; 537 538 /* stop interrupt endpoint */ 539 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 540 541 /* stop read endpoint */ 542 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 543 } 544 545 static void 546 ubsa_start_write(struct ucom_softc *ucom) 547 { 548 struct ubsa_softc *sc = ucom->sc_parent; 549 550 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 551 } 552 553 static void 554 ubsa_stop_write(struct ucom_softc *ucom) 555 { 556 struct ubsa_softc *sc = ucom->sc_parent; 557 558 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 559 } 560 561 static void 562 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 563 { 564 struct ubsa_softc *sc = ucom->sc_parent; 565 566 DPRINTF("\n"); 567 568 *lsr = sc->sc_lsr; 569 *msr = sc->sc_msr; 570 } 571 572 static void 573 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 574 { 575 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 576 struct usb_page_cache *pc; 577 uint32_t actlen; 578 579 switch (USB_GET_STATE(xfer)) { 580 case USB_ST_SETUP: 581 case USB_ST_TRANSFERRED: 582 tr_setup: 583 pc = usbd_xfer_get_frame(xfer, 0); 584 if (ucom_get_data(&sc->sc_ucom, pc, 0, 585 UBSA_BSIZE, &actlen)) { 586 usbd_xfer_set_frame_len(xfer, 0, actlen); 587 usbd_transfer_submit(xfer); 588 } 589 return; 590 591 default: /* Error */ 592 if (error != USB_ERR_CANCELLED) { 593 /* try to clear stall first */ 594 usbd_xfer_set_stall(xfer); 595 goto tr_setup; 596 } 597 return; 598 } 599 } 600 601 static void 602 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 603 { 604 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 605 struct usb_page_cache *pc; 606 int actlen; 607 608 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 609 610 switch (USB_GET_STATE(xfer)) { 611 case USB_ST_TRANSFERRED: 612 pc = usbd_xfer_get_frame(xfer, 0); 613 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 614 615 case USB_ST_SETUP: 616 tr_setup: 617 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 618 usbd_transfer_submit(xfer); 619 return; 620 621 default: /* Error */ 622 if (error != USB_ERR_CANCELLED) { 623 /* try to clear stall first */ 624 usbd_xfer_set_stall(xfer); 625 goto tr_setup; 626 } 627 return; 628 } 629 } 630 631 static void 632 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 633 { 634 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 635 struct usb_page_cache *pc; 636 uint8_t buf[4]; 637 int actlen; 638 639 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 640 641 switch (USB_GET_STATE(xfer)) { 642 case USB_ST_TRANSFERRED: 643 644 if (actlen >= (int)sizeof(buf)) { 645 pc = usbd_xfer_get_frame(xfer, 0); 646 usbd_copy_out(pc, 0, buf, sizeof(buf)); 647 648 /* 649 * MSR bits need translation from ns16550 to SER_* values. 650 * LSR bits are ns16550 in hardware and ucom. 651 */ 652 sc->sc_msr = 0; 653 if (buf[3] & UBSA_MSR_CTS) 654 sc->sc_msr |= SER_CTS; 655 if (buf[3] & UBSA_MSR_DCD) 656 sc->sc_msr |= SER_DCD; 657 if (buf[3] & UBSA_MSR_RI) 658 sc->sc_msr |= SER_RI; 659 if (buf[3] & UBSA_MSR_DSR) 660 sc->sc_msr |= SER_DSR; 661 sc->sc_lsr = buf[2]; 662 663 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 664 sc->sc_lsr, sc->sc_msr); 665 666 ucom_status_change(&sc->sc_ucom); 667 } else { 668 DPRINTF("ignoring short packet, %d bytes\n", actlen); 669 } 670 /* FALLTHROUGH */ 671 case USB_ST_SETUP: 672 tr_setup: 673 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 674 usbd_transfer_submit(xfer); 675 return; 676 677 default: /* Error */ 678 if (error != USB_ERR_CANCELLED) { 679 /* try to clear stall first */ 680 usbd_xfer_set_stall(xfer); 681 goto tr_setup; 682 } 683 return; 684 } 685 } 686 687 static void 688 ubsa_poll(struct ucom_softc *ucom) 689 { 690 struct ubsa_softc *sc = ucom->sc_parent; 691 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 692 693 } 694