1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD AND BSD-2-Clause-NetBSD 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 __FBSDID("$FreeBSD$"); 31 /*- 32 * Copyright (c) 2001 The NetBSD Foundation, Inc. 33 * All rights reserved. 34 * 35 * This code is derived from software contributed to The NetBSD Foundation 36 * by Ichiro FUKUHARA (ichiro@ichiro.org). 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 48 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 49 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 50 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 51 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 57 * POSSIBILITY OF SUCH DAMAGE. 58 */ 59 60 #include <sys/stdint.h> 61 #include <sys/stddef.h> 62 #include <sys/param.h> 63 #include <sys/queue.h> 64 #include <sys/types.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/bus.h> 68 #include <sys/module.h> 69 #include <sys/lock.h> 70 #include <sys/mutex.h> 71 #include <sys/condvar.h> 72 #include <sys/sysctl.h> 73 #include <sys/sx.h> 74 #include <sys/unistd.h> 75 #include <sys/callout.h> 76 #include <sys/malloc.h> 77 #include <sys/priv.h> 78 79 #include <dev/usb/usb.h> 80 #include <dev/usb/usbdi.h> 81 #include <dev/usb/usbdi_util.h> 82 #include "usbdevs.h" 83 84 #define USB_DEBUG_VAR ubsa_debug 85 #include <dev/usb/usb_debug.h> 86 #include <dev/usb/usb_process.h> 87 88 #include <dev/usb/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 | CTLFLAG_MPSAFE, 0, 94 "USB ubsa"); 95 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RWTUN, 96 &ubsa_debug, 0, "ubsa debug level"); 97 #endif 98 99 #define UBSA_BSIZE 1024 /* bytes */ 100 101 #define UBSA_CONFIG_INDEX 0 102 #define UBSA_IFACE_INDEX 0 103 104 #define UBSA_REG_BAUDRATE 0x00 105 #define UBSA_REG_STOP_BITS 0x01 106 #define UBSA_REG_DATA_BITS 0x02 107 #define UBSA_REG_PARITY 0x03 108 #define UBSA_REG_DTR 0x0A 109 #define UBSA_REG_RTS 0x0B 110 #define UBSA_REG_BREAK 0x0C 111 #define UBSA_REG_FLOW_CTRL 0x10 112 113 #define UBSA_PARITY_NONE 0x00 114 #define UBSA_PARITY_EVEN 0x01 115 #define UBSA_PARITY_ODD 0x02 116 #define UBSA_PARITY_MARK 0x03 117 #define UBSA_PARITY_SPACE 0x04 118 119 #define UBSA_FLOW_NONE 0x0000 120 #define UBSA_FLOW_OCTS 0x0001 121 #define UBSA_FLOW_ODSR 0x0002 122 #define UBSA_FLOW_IDSR 0x0004 123 #define UBSA_FLOW_IDTR 0x0008 124 #define UBSA_FLOW_IRTS 0x0010 125 #define UBSA_FLOW_ORTS 0x0020 126 #define UBSA_FLOW_UNKNOWN 0x0040 127 #define UBSA_FLOW_OXON 0x0080 128 #define UBSA_FLOW_IXON 0x0100 129 130 /* line status register */ 131 #define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */ 132 #define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */ 133 #define UBSA_LSR_BI 0x10 /* Break detected */ 134 #define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */ 135 #define UBSA_LSR_PE 0x04 /* Parity error */ 136 #define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */ 137 #define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */ 138 #define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */ 139 140 /* modem status register */ 141 /* All deltas are from the last read of the MSR. */ 142 #define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */ 143 #define UBSA_MSR_RI 0x40 /* Current Ring Indicator */ 144 #define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */ 145 #define UBSA_MSR_CTS 0x10 /* Current Clear to Send */ 146 #define UBSA_MSR_DDCD 0x08 /* DCD has changed state */ 147 #define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */ 148 #define UBSA_MSR_DDSR 0x02 /* DSR has changed state */ 149 #define UBSA_MSR_DCTS 0x01 /* CTS has changed state */ 150 151 enum { 152 UBSA_BULK_DT_WR, 153 UBSA_BULK_DT_RD, 154 UBSA_INTR_DT_RD, 155 UBSA_N_TRANSFER, 156 }; 157 158 struct ubsa_softc { 159 struct ucom_super_softc sc_super_ucom; 160 struct ucom_softc sc_ucom; 161 162 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER]; 163 struct usb_device *sc_udev; 164 struct mtx sc_mtx; 165 166 uint8_t sc_iface_no; /* interface number */ 167 uint8_t sc_iface_index; /* interface index */ 168 uint8_t sc_lsr; /* local status register */ 169 uint8_t sc_msr; /* UBSA status register */ 170 }; 171 172 static device_probe_t ubsa_probe; 173 static device_attach_t ubsa_attach; 174 static device_detach_t ubsa_detach; 175 static void ubsa_free_softc(struct ubsa_softc *); 176 177 static usb_callback_t ubsa_write_callback; 178 static usb_callback_t ubsa_read_callback; 179 static usb_callback_t ubsa_intr_callback; 180 181 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t); 182 static void ubsa_free(struct ucom_softc *); 183 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t); 184 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t); 185 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t); 186 static int ubsa_pre_param(struct ucom_softc *, struct termios *); 187 static void ubsa_cfg_param(struct ucom_softc *, struct termios *); 188 static void ubsa_start_read(struct ucom_softc *); 189 static void ubsa_stop_read(struct ucom_softc *); 190 static void ubsa_start_write(struct ucom_softc *); 191 static void ubsa_stop_write(struct ucom_softc *); 192 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *, 193 uint8_t *); 194 static void ubsa_poll(struct ucom_softc *ucom); 195 196 static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = { 197 [UBSA_BULK_DT_WR] = { 198 .type = UE_BULK, 199 .endpoint = UE_ADDR_ANY, 200 .direction = UE_DIR_OUT, 201 .bufsize = UBSA_BSIZE, /* bytes */ 202 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 203 .callback = &ubsa_write_callback, 204 }, 205 206 [UBSA_BULK_DT_RD] = { 207 .type = UE_BULK, 208 .endpoint = UE_ADDR_ANY, 209 .direction = UE_DIR_IN, 210 .bufsize = UBSA_BSIZE, /* bytes */ 211 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 212 .callback = &ubsa_read_callback, 213 }, 214 215 [UBSA_INTR_DT_RD] = { 216 .type = UE_INTERRUPT, 217 .endpoint = UE_ADDR_ANY, 218 .direction = UE_DIR_IN, 219 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 220 .bufsize = 0, /* use wMaxPacketSize */ 221 .callback = &ubsa_intr_callback, 222 }, 223 }; 224 225 static const struct ucom_callback ubsa_callback = { 226 .ucom_cfg_get_status = &ubsa_cfg_get_status, 227 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr, 228 .ucom_cfg_set_rts = &ubsa_cfg_set_rts, 229 .ucom_cfg_set_break = &ubsa_cfg_set_break, 230 .ucom_cfg_param = &ubsa_cfg_param, 231 .ucom_pre_param = &ubsa_pre_param, 232 .ucom_start_read = &ubsa_start_read, 233 .ucom_stop_read = &ubsa_stop_read, 234 .ucom_start_write = &ubsa_start_write, 235 .ucom_stop_write = &ubsa_stop_write, 236 .ucom_poll = &ubsa_poll, 237 .ucom_free = &ubsa_free, 238 }; 239 240 static const STRUCT_USB_HOST_ID ubsa_devs[] = { 241 /* AnyData ADU-500A */ 242 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)}, 243 /* AnyData ADU-E100A/H */ 244 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)}, 245 /* Axesstel MV100H */ 246 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)}, 247 /* BELKIN F5U103 */ 248 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)}, 249 /* BELKIN F5U120 */ 250 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)}, 251 /* GoHubs GO-COM232 */ 252 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)}, 253 /* GoHubs GO-COM232 */ 254 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)}, 255 /* Peracom */ 256 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)}, 257 }; 258 259 static device_method_t ubsa_methods[] = { 260 DEVMETHOD(device_probe, ubsa_probe), 261 DEVMETHOD(device_attach, ubsa_attach), 262 DEVMETHOD(device_detach, ubsa_detach), 263 DEVMETHOD_END 264 }; 265 266 static devclass_t ubsa_devclass; 267 268 static driver_t ubsa_driver = { 269 .name = "ubsa", 270 .methods = ubsa_methods, 271 .size = sizeof(struct ubsa_softc), 272 }; 273 274 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0); 275 MODULE_DEPEND(ubsa, ucom, 1, 1, 1); 276 MODULE_DEPEND(ubsa, usb, 1, 1, 1); 277 MODULE_VERSION(ubsa, 1); 278 USB_PNP_HOST_INFO(ubsa_devs); 279 280 static int 281 ubsa_probe(device_t dev) 282 { 283 struct usb_attach_arg *uaa = device_get_ivars(dev); 284 285 if (uaa->usb_mode != USB_MODE_HOST) { 286 return (ENXIO); 287 } 288 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) { 289 return (ENXIO); 290 } 291 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) { 292 return (ENXIO); 293 } 294 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa)); 295 } 296 297 static int 298 ubsa_attach(device_t dev) 299 { 300 struct usb_attach_arg *uaa = device_get_ivars(dev); 301 struct ubsa_softc *sc = device_get_softc(dev); 302 int error; 303 304 DPRINTF("sc=%p\n", sc); 305 306 device_set_usb_desc(dev); 307 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF); 308 ucom_ref(&sc->sc_super_ucom); 309 310 sc->sc_udev = uaa->device; 311 sc->sc_iface_no = uaa->info.bIfaceNum; 312 sc->sc_iface_index = UBSA_IFACE_INDEX; 313 314 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 315 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx); 316 317 if (error) { 318 DPRINTF("could not allocate all pipes\n"); 319 goto detach; 320 } 321 /* clear stall at first run */ 322 mtx_lock(&sc->sc_mtx); 323 usbd_xfer_set_zlp(sc->sc_xfer[UBSA_BULK_DT_WR]); 324 mtx_unlock(&sc->sc_mtx); 325 326 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 327 &ubsa_callback, &sc->sc_mtx); 328 if (error) { 329 DPRINTF("ucom_attach failed\n"); 330 goto detach; 331 } 332 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 333 334 return (0); 335 336 detach: 337 ubsa_detach(dev); 338 return (ENXIO); 339 } 340 341 static int 342 ubsa_detach(device_t dev) 343 { 344 struct ubsa_softc *sc = device_get_softc(dev); 345 346 DPRINTF("sc=%p\n", sc); 347 348 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 349 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER); 350 351 device_claim_softc(dev); 352 353 ubsa_free_softc(sc); 354 355 return (0); 356 } 357 358 UCOM_UNLOAD_DRAIN(ubsa); 359 360 static void 361 ubsa_free_softc(struct ubsa_softc *sc) 362 { 363 if (ucom_unref(&sc->sc_super_ucom)) { 364 mtx_destroy(&sc->sc_mtx); 365 device_free_softc(sc); 366 } 367 } 368 369 static void 370 ubsa_free(struct ucom_softc *ucom) 371 { 372 ubsa_free_softc(ucom->sc_parent); 373 } 374 375 static void 376 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value) 377 { 378 struct usb_device_request req; 379 usb_error_t err; 380 381 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 382 req.bRequest = index; 383 USETW(req.wValue, value); 384 req.wIndex[0] = sc->sc_iface_no; 385 req.wIndex[1] = 0; 386 USETW(req.wLength, 0); 387 388 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 389 &req, NULL, 0, 1000); 390 if (err) { 391 DPRINTFN(0, "device request failed, err=%s " 392 "(ignored)\n", usbd_errstr(err)); 393 } 394 } 395 396 static void 397 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 398 { 399 struct ubsa_softc *sc = ucom->sc_parent; 400 401 DPRINTF("onoff = %d\n", onoff); 402 403 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0); 404 } 405 406 static void 407 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 408 { 409 struct ubsa_softc *sc = ucom->sc_parent; 410 411 DPRINTF("onoff = %d\n", onoff); 412 413 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0); 414 } 415 416 static void 417 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 418 { 419 struct ubsa_softc *sc = ucom->sc_parent; 420 421 DPRINTF("onoff = %d\n", onoff); 422 423 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0); 424 } 425 426 static int 427 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t) 428 { 429 430 DPRINTF("sc = %p\n", ucom->sc_parent); 431 432 switch (t->c_ospeed) { 433 case B0: 434 case B300: 435 case B600: 436 case B1200: 437 case B2400: 438 case B4800: 439 case B9600: 440 case B19200: 441 case B38400: 442 case B57600: 443 case B115200: 444 case B230400: 445 break; 446 default: 447 return (EINVAL); 448 } 449 return (0); 450 } 451 452 static void 453 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t) 454 { 455 struct ubsa_softc *sc = ucom->sc_parent; 456 uint16_t value = 0; 457 458 DPRINTF("sc = %p\n", sc); 459 460 switch (t->c_ospeed) { 461 case B0: 462 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0); 463 ubsa_cfg_set_dtr(&sc->sc_ucom, 0); 464 ubsa_cfg_set_rts(&sc->sc_ucom, 0); 465 break; 466 case B300: 467 case B600: 468 case B1200: 469 case B2400: 470 case B4800: 471 case B9600: 472 case B19200: 473 case B38400: 474 case B57600: 475 case B115200: 476 case B230400: 477 value = B230400 / t->c_ospeed; 478 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value); 479 break; 480 default: 481 return; 482 } 483 484 if (t->c_cflag & PARENB) 485 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN; 486 else 487 value = UBSA_PARITY_NONE; 488 489 ubsa_cfg_request(sc, UBSA_REG_PARITY, value); 490 491 switch (t->c_cflag & CSIZE) { 492 case CS5: 493 value = 0; 494 break; 495 case CS6: 496 value = 1; 497 break; 498 case CS7: 499 value = 2; 500 break; 501 default: 502 case CS8: 503 value = 3; 504 break; 505 } 506 507 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value); 508 509 value = (t->c_cflag & CSTOPB) ? 1 : 0; 510 511 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value); 512 513 value = 0; 514 if (t->c_cflag & CRTSCTS) 515 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS; 516 517 if (t->c_iflag & (IXON | IXOFF)) 518 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON; 519 520 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value); 521 } 522 523 static void 524 ubsa_start_read(struct ucom_softc *ucom) 525 { 526 struct ubsa_softc *sc = ucom->sc_parent; 527 528 /* start interrupt endpoint */ 529 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]); 530 531 /* start read endpoint */ 532 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]); 533 } 534 535 static void 536 ubsa_stop_read(struct ucom_softc *ucom) 537 { 538 struct ubsa_softc *sc = ucom->sc_parent; 539 540 /* stop interrupt endpoint */ 541 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]); 542 543 /* stop read endpoint */ 544 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]); 545 } 546 547 static void 548 ubsa_start_write(struct ucom_softc *ucom) 549 { 550 struct ubsa_softc *sc = ucom->sc_parent; 551 552 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]); 553 } 554 555 static void 556 ubsa_stop_write(struct ucom_softc *ucom) 557 { 558 struct ubsa_softc *sc = ucom->sc_parent; 559 560 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]); 561 } 562 563 static void 564 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 565 { 566 struct ubsa_softc *sc = ucom->sc_parent; 567 568 DPRINTF("\n"); 569 570 *lsr = sc->sc_lsr; 571 *msr = sc->sc_msr; 572 } 573 574 static void 575 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error) 576 { 577 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 578 struct usb_page_cache *pc; 579 uint32_t actlen; 580 581 switch (USB_GET_STATE(xfer)) { 582 case USB_ST_SETUP: 583 case USB_ST_TRANSFERRED: 584 tr_setup: 585 if (usbd_xfer_get_and_clr_zlp(xfer)) 586 break; 587 588 pc = usbd_xfer_get_frame(xfer, 0); 589 if (ucom_get_data(&sc->sc_ucom, pc, 0, 590 UBSA_BSIZE, &actlen)) { 591 usbd_xfer_set_frame_len(xfer, 0, actlen); 592 usbd_transfer_submit(xfer); 593 } 594 break; 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 break; 603 } 604 } 605 606 static void 607 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error) 608 { 609 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 610 struct usb_page_cache *pc; 611 int actlen; 612 613 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 614 615 switch (USB_GET_STATE(xfer)) { 616 case USB_ST_TRANSFERRED: 617 pc = usbd_xfer_get_frame(xfer, 0); 618 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 619 620 case USB_ST_SETUP: 621 tr_setup: 622 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 623 usbd_transfer_submit(xfer); 624 return; 625 626 default: /* Error */ 627 if (error != USB_ERR_CANCELLED) { 628 /* try to clear stall first */ 629 usbd_xfer_set_stall(xfer); 630 goto tr_setup; 631 } 632 return; 633 } 634 } 635 636 static void 637 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error) 638 { 639 struct ubsa_softc *sc = usbd_xfer_softc(xfer); 640 struct usb_page_cache *pc; 641 uint8_t buf[4]; 642 int actlen; 643 644 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 645 646 switch (USB_GET_STATE(xfer)) { 647 case USB_ST_TRANSFERRED: 648 649 if (actlen >= (int)sizeof(buf)) { 650 pc = usbd_xfer_get_frame(xfer, 0); 651 usbd_copy_out(pc, 0, buf, sizeof(buf)); 652 653 /* 654 * MSR bits need translation from ns16550 to SER_* values. 655 * LSR bits are ns16550 in hardware and ucom. 656 */ 657 sc->sc_msr = 0; 658 if (buf[3] & UBSA_MSR_CTS) 659 sc->sc_msr |= SER_CTS; 660 if (buf[3] & UBSA_MSR_DCD) 661 sc->sc_msr |= SER_DCD; 662 if (buf[3] & UBSA_MSR_RI) 663 sc->sc_msr |= SER_RI; 664 if (buf[3] & UBSA_MSR_DSR) 665 sc->sc_msr |= SER_DSR; 666 sc->sc_lsr = buf[2]; 667 668 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n", 669 sc->sc_lsr, sc->sc_msr); 670 671 ucom_status_change(&sc->sc_ucom); 672 } else { 673 DPRINTF("ignoring short packet, %d bytes\n", actlen); 674 } 675 /* FALLTHROUGH */ 676 case USB_ST_SETUP: 677 tr_setup: 678 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 679 usbd_transfer_submit(xfer); 680 return; 681 682 default: /* Error */ 683 if (error != USB_ERR_CANCELLED) { 684 /* try to clear stall first */ 685 usbd_xfer_set_stall(xfer); 686 goto tr_setup; 687 } 688 return; 689 } 690 } 691 692 static void 693 ubsa_poll(struct ucom_softc *ucom) 694 { 695 struct ubsa_softc *sc = ucom->sc_parent; 696 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER); 697 698 } 699