umct.c revision 1.42
1 /* $NetBSD: umct.c,v 1.42 2021/04/24 23:36:59 thorpej Exp $ */ 2 /* 3 * Copyright (c) 2001 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Ichiro FUKUHARA (ichiro (at) ichiro.org). 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * MCT USB-RS232 Interface Controller 33 * http://www.mct.com.tw/prod/rs232.html 34 * http://www.dlink.com/products/usb/dsbs25 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: umct.c,v 1.42 2021/04/24 23:36:59 thorpej Exp $"); 39 40 #ifdef _KERNEL_OPT 41 #include "opt_usb.h" 42 #endif 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/ioctl.h> 48 #include <sys/conf.h> 49 #include <sys/tty.h> 50 #include <sys/file.h> 51 #include <sys/select.h> 52 #include <sys/proc.h> 53 #include <sys/vnode.h> 54 #include <sys/device.h> 55 #include <sys/poll.h> 56 57 #include <dev/usb/usb.h> 58 #include <dev/usb/usbcdc.h> 59 60 #include <dev/usb/usbdi.h> 61 #include <dev/usb/usbdi_util.h> 62 #include <dev/usb/usbdevs.h> 63 #include <dev/usb/usb_quirks.h> 64 65 #include <dev/usb/ucomvar.h> 66 #include <dev/usb/umct.h> 67 68 #ifdef UMCT_DEBUG 69 #define DPRINTFN(n, x) if (umctdebug > (n)) printf x 70 int umctdebug = 0; 71 #else 72 #define DPRINTFN(n, x) 73 #endif 74 #define DPRINTF(x) DPRINTFN(0, x) 75 76 #define UMCT_CONFIG_INDEX 0 77 #define UMCT_IFACE_INDEX 0 78 79 struct umct_softc { 80 device_t sc_dev; /* base device */ 81 struct usbd_device * sc_udev; /* USB device */ 82 struct usbd_interface * sc_iface; /* interface */ 83 int sc_iface_number; /* interface number */ 84 uint16_t sc_product; 85 86 int sc_intr_number; /* interrupt number */ 87 struct usbd_pipe * sc_intr_pipe; /* interrupt pipe */ 88 u_char *sc_intr_buf; /* interrupt buffer */ 89 int sc_isize; 90 91 usb_cdc_line_state_t sc_line_state; /* current line state */ 92 u_char sc_dtr; /* current DTR state */ 93 u_char sc_rts; /* current RTS state */ 94 u_char sc_break; /* set break */ 95 96 u_char sc_status; 97 98 device_t sc_subdev; /* ucom device */ 99 100 bool sc_dying; /* disconnecting */ 101 102 u_char sc_lsr; /* Local status register */ 103 u_char sc_msr; /* umct status register */ 104 105 u_int last_lcr; /* keep lcr register */ 106 }; 107 108 /* 109 * These are the maximum number of bytes transferred per frame. 110 * The output buffer size cannot be increased due to the size encoding. 111 */ 112 #define UMCTIBUFSIZE 256 113 #define UMCTOBUFSIZE 256 114 115 static void umct_init(struct umct_softc *); 116 static void umct_set_baudrate(struct umct_softc *, u_int); 117 static void umct_set_lcr(struct umct_softc *, u_int); 118 static void umct_intr(struct usbd_xfer *, void *, usbd_status); 119 120 static void umct_set(void *, int, int, int); 121 static void umct_dtr(struct umct_softc *, int); 122 static void umct_rts(struct umct_softc *, int); 123 static void umct_break(struct umct_softc *, int); 124 static void umct_set_line_state(struct umct_softc *); 125 static void umct_get_status(void *, int, u_char *, u_char *); 126 static int umct_param(void *, int, struct termios *); 127 static int umct_open(void *, int); 128 static void umct_close(void *, int); 129 130 static const struct ucom_methods umct_methods = { 131 .ucom_get_status = umct_get_status, 132 .ucom_set = umct_set, 133 .ucom_param = umct_param, 134 .ucom_open = umct_open, 135 .ucom_close = umct_close, 136 }; 137 138 static const struct usb_devno umct_devs[] = { 139 /* MCT USB-232 Interface Products */ 140 { USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232 }, 141 /* Sitecom USB-232 Products */ 142 { USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232 }, 143 /* D-Link DU-H3SP USB BAY Hub Products */ 144 { USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232 }, 145 /* BELKIN F5U109 */ 146 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109 }, 147 }; 148 #define umct_lookup(v, p) usb_lookup(umct_devs, v, p) 149 150 static int umct_match(device_t, cfdata_t, void *); 151 static void umct_attach(device_t, device_t, void *); 152 static void umct_childdet(device_t, device_t); 153 static int umct_detach(device_t, int); 154 155 CFATTACH_DECL2_NEW(umct, sizeof(struct umct_softc), umct_match, 156 umct_attach, umct_detach, NULL, NULL, umct_childdet); 157 158 static int 159 umct_match(device_t parent, cfdata_t match, void *aux) 160 { 161 struct usb_attach_arg *uaa = aux; 162 163 return umct_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ? 164 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 165 } 166 167 static void 168 umct_attach(device_t parent, device_t self, void *aux) 169 { 170 struct umct_softc *sc = device_private(self); 171 struct usb_attach_arg *uaa = aux; 172 struct usbd_device *dev = uaa->uaa_device; 173 usb_config_descriptor_t *cdesc; 174 usb_interface_descriptor_t *id; 175 usb_endpoint_descriptor_t *ed; 176 177 char *devinfop; 178 usbd_status err; 179 int i; 180 struct ucom_attach_args ucaa; 181 182 sc->sc_dev = self; 183 sc->sc_dying = false; 184 185 aprint_naive("\n"); 186 aprint_normal("\n"); 187 188 devinfop = usbd_devinfo_alloc(dev, 0); 189 aprint_normal_dev(self, "%s\n", devinfop); 190 usbd_devinfo_free(devinfop); 191 192 sc->sc_udev = dev; 193 sc->sc_product = uaa->uaa_product; 194 195 DPRINTF(("\n\numct attach: sc=%p\n", sc)); 196 197 /* initialize endpoints */ 198 ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1; 199 sc->sc_intr_number = -1; 200 sc->sc_intr_pipe = NULL; 201 202 /* Move the device into the configured state. */ 203 err = usbd_set_config_index(dev, UMCT_CONFIG_INDEX, 1); 204 if (err) { 205 aprint_error_dev(self, "failed to set configuration, err=%s\n", 206 usbd_errstr(err)); 207 sc->sc_dying = true; 208 return; 209 } 210 211 /* get the config descriptor */ 212 cdesc = usbd_get_config_descriptor(sc->sc_udev); 213 214 if (cdesc == NULL) { 215 aprint_error_dev(self, 216 "failed to get configuration descriptor\n"); 217 sc->sc_dying = true; 218 return; 219 } 220 221 /* get the interface */ 222 err = usbd_device2interface_handle(dev, UMCT_IFACE_INDEX, 223 &sc->sc_iface); 224 if (err) { 225 aprint_error_dev(self, "failed to get interface, err=%s\n", 226 usbd_errstr(err)); 227 sc->sc_dying = true; 228 return; 229 } 230 231 /* Find the bulk{in,out} and interrupt endpoints */ 232 233 id = usbd_get_interface_descriptor(sc->sc_iface); 234 sc->sc_iface_number = id->bInterfaceNumber; 235 236 for (i = 0; i < id->bNumEndpoints; i++) { 237 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 238 if (ed == NULL) { 239 aprint_error_dev(self, 240 "no endpoint descriptor for %d\n", i); 241 sc->sc_dying = true; 242 return; 243 } 244 245 /* 246 * The Bulkin endpoint is marked as an interrupt. Since 247 * we can't rely on the endpoint descriptor order, we'll 248 * check the wMaxPacketSize field to differentiate. 249 */ 250 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 251 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT && 252 UGETW(ed->wMaxPacketSize) != 0x2) { 253 ucaa.ucaa_bulkin = ed->bEndpointAddress; 254 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 255 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 256 ucaa.ucaa_bulkout = ed->bEndpointAddress; 257 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 258 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 259 sc->sc_intr_number = ed->bEndpointAddress; 260 sc->sc_isize = UGETW(ed->wMaxPacketSize); 261 } 262 } 263 264 if (ucaa.ucaa_bulkin == -1) { 265 aprint_error_dev(self, "Could not find data bulk in\n"); 266 sc->sc_dying = true; 267 return; 268 } 269 270 if (ucaa.ucaa_bulkout == -1) { 271 aprint_error_dev(self, "Could not find data bulk out\n"); 272 sc->sc_dying = true; 273 return; 274 } 275 276 if (sc->sc_intr_number == -1) { 277 aprint_error_dev(self, "Could not find interrupt in\n"); 278 sc->sc_dying = true; 279 return; 280 } 281 282 sc->sc_dtr = sc->sc_rts = 0; 283 ucaa.ucaa_portno = UCOM_UNK_PORTNO; 284 /* ucaa_bulkin, ucaa_bulkout set above */ 285 ucaa.ucaa_ibufsize = UMCTIBUFSIZE; 286 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232) 287 ucaa.ucaa_obufsize = 16; /* device is broken */ 288 else 289 ucaa.ucaa_obufsize = UMCTOBUFSIZE; 290 ucaa.ucaa_ibufsizepad = UMCTIBUFSIZE; 291 ucaa.ucaa_opkthdrlen = 0; 292 ucaa.ucaa_device = dev; 293 ucaa.ucaa_iface = sc->sc_iface; 294 ucaa.ucaa_methods = &umct_methods; 295 ucaa.ucaa_arg = sc; 296 ucaa.ucaa_info = NULL; 297 298 umct_init(sc); 299 300 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 301 302 DPRINTF(("umct: in=%#x out=%#x intr=%#x\n", 303 ucaa.ucaa_bulkin, ucaa.ucaa_bulkout, sc->sc_intr_number)); 304 sc->sc_subdev = config_found(self, &ucaa, ucomprint, 305 CFARG_SUBMATCH, ucomsubmatch, 306 CFARG_EOL); 307 308 return; 309 } 310 311 static void 312 umct_childdet(device_t self, device_t child) 313 { 314 struct umct_softc *sc = device_private(self); 315 316 KASSERT(sc->sc_subdev == child); 317 sc->sc_subdev = NULL; 318 } 319 320 static void 321 umct_close_pipe(struct umct_softc *sc) 322 { 323 324 if (sc->sc_intr_pipe != NULL) { 325 usbd_abort_pipe(sc->sc_intr_pipe); 326 usbd_close_pipe(sc->sc_intr_pipe); 327 sc->sc_intr_pipe = NULL; 328 } 329 if (sc->sc_intr_buf != NULL) { 330 kmem_free(sc->sc_intr_buf, sc->sc_isize); 331 sc->sc_intr_buf = NULL; 332 } 333 } 334 335 static int 336 umct_detach(device_t self, int flags) 337 { 338 struct umct_softc *sc = device_private(self); 339 int rv = 0; 340 341 DPRINTF(("umct_detach: sc=%p flags=%d\n", sc, flags)); 342 343 sc->sc_dying = true; 344 345 umct_close_pipe(sc); 346 347 if (sc->sc_subdev != NULL) { 348 rv = config_detach(sc->sc_subdev, flags); 349 sc->sc_subdev = NULL; 350 } 351 352 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 353 354 return rv; 355 } 356 357 static void 358 umct_set_line_state(struct umct_softc *sc) 359 { 360 usb_device_request_t req; 361 uByte ls; 362 363 ls = (sc->sc_dtr ? MCR_DTR : 0) | 364 (sc->sc_rts ? MCR_RTS : 0); 365 366 DPRINTF(("umct_set_line_state: DTR=%d,RTS=%d,ls=%02x\n", 367 sc->sc_dtr, sc->sc_rts, ls)); 368 369 req.bmRequestType = UMCT_SET_REQUEST; 370 req.bRequest = REQ_SET_MCR; 371 USETW(req.wValue, 0); 372 USETW(req.wIndex, sc->sc_iface_number); 373 USETW(req.wLength, LENGTH_SET_MCR); 374 375 (void)usbd_do_request(sc->sc_udev, &req, &ls); 376 } 377 378 static void 379 umct_set(void *addr, int portno, int reg, int onoff) 380 { 381 struct umct_softc *sc = addr; 382 383 if (sc->sc_dying) 384 return; 385 386 switch (reg) { 387 case UCOM_SET_DTR: 388 umct_dtr(sc, onoff); 389 break; 390 case UCOM_SET_RTS: 391 umct_rts(sc, onoff); 392 break; 393 case UCOM_SET_BREAK: 394 umct_break(sc, onoff); 395 break; 396 default: 397 break; 398 } 399 } 400 401 void 402 umct_dtr(struct umct_softc *sc, int onoff) 403 { 404 405 DPRINTF(("umct_dtr: onoff=%d\n", onoff)); 406 407 if (sc->sc_dtr == onoff) 408 return; 409 sc->sc_dtr = onoff; 410 411 umct_set_line_state(sc); 412 } 413 414 void 415 umct_rts(struct umct_softc *sc, int onoff) 416 { 417 DPRINTF(("umct_rts: onoff=%d\n", onoff)); 418 419 if (sc->sc_rts == onoff) 420 return; 421 sc->sc_rts = onoff; 422 423 umct_set_line_state(sc); 424 } 425 426 void 427 umct_break(struct umct_softc *sc, int onoff) 428 { 429 DPRINTF(("umct_break: onoff=%d\n", onoff)); 430 431 umct_set_lcr(sc, onoff ? sc->last_lcr | LCR_SET_BREAK : 432 sc->last_lcr); 433 } 434 435 void 436 umct_set_lcr(struct umct_softc *sc, u_int data) 437 { 438 usb_device_request_t req; 439 uByte adata; 440 441 adata = data; 442 req.bmRequestType = UMCT_SET_REQUEST; 443 req.bRequest = REQ_SET_LCR; 444 USETW(req.wValue, 0); 445 USETW(req.wIndex, sc->sc_iface_number); 446 USETW(req.wLength, LENGTH_SET_LCR); 447 448 (void)usbd_do_request(sc->sc_udev, &req, &adata); /* XXX should check */ 449 } 450 451 void 452 umct_set_baudrate(struct umct_softc *sc, u_int rate) 453 { 454 usb_device_request_t req; 455 uDWord arate; 456 u_int val; 457 458 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232 || 459 sc->sc_product == USB_PRODUCT_BELKIN_F5U109) { 460 switch (rate) { 461 case 300: val = 0x01; break; 462 case 600: val = 0x02; break; 463 case 1200: val = 0x03; break; 464 case 2400: val = 0x04; break; 465 case 4800: val = 0x06; break; 466 case 9600: val = 0x08; break; 467 case 19200: val = 0x09; break; 468 case 38400: val = 0x0a; break; 469 case 57600: val = 0x0b; break; 470 case 115200: val = 0x0c; break; 471 default: val = -1; break; 472 } 473 } else { 474 val = UMCT_BAUD_RATE(rate); 475 } 476 USETDW(arate, val); 477 478 req.bmRequestType = UMCT_SET_REQUEST; 479 req.bRequest = REQ_SET_BAUD_RATE; 480 USETW(req.wValue, 0); 481 USETW(req.wIndex, sc->sc_iface_number); 482 USETW(req.wLength, LENGTH_BAUD_RATE); 483 484 (void)usbd_do_request(sc->sc_udev, &req, arate); /* XXX should check */ 485 } 486 487 static void 488 umct_init(struct umct_softc *sc) 489 { 490 umct_set_baudrate(sc, 9600); 491 umct_set_lcr(sc, LCR_DATA_BITS_8 | LCR_PARITY_NONE | LCR_STOP_BITS_1); 492 } 493 494 static int 495 umct_param(void *addr, int portno, struct termios *t) 496 { 497 struct umct_softc *sc = addr; 498 u_int data = 0; 499 500 DPRINTF(("umct_param: sc=%p BAUDRATE=%d\n", sc, t->c_ospeed)); 501 502 if (sc->sc_dying) 503 return EIO; 504 505 if (ISSET(t->c_cflag, CSTOPB)) 506 data |= LCR_STOP_BITS_2; 507 else 508 data |= LCR_STOP_BITS_1; 509 if (ISSET(t->c_cflag, PARENB)) { 510 if (ISSET(t->c_cflag, PARODD)) 511 data |= LCR_PARITY_ODD; 512 else 513 data |= LCR_PARITY_EVEN; 514 } else 515 data |= LCR_PARITY_NONE; 516 switch (ISSET(t->c_cflag, CSIZE)) { 517 case CS5: 518 data |= LCR_DATA_BITS_5; 519 break; 520 case CS6: 521 data |= LCR_DATA_BITS_6; 522 break; 523 case CS7: 524 data |= LCR_DATA_BITS_7; 525 break; 526 case CS8: 527 data |= LCR_DATA_BITS_8; 528 break; 529 } 530 531 umct_set_baudrate(sc, t->c_ospeed); 532 533 sc->last_lcr = data; 534 umct_set_lcr(sc, data); 535 536 return 0; 537 } 538 539 int 540 umct_open(void *addr, int portno) 541 { 542 struct umct_softc *sc = addr; 543 int err, lcr_data; 544 545 DPRINTF(("umct_open: sc=%p\n", sc)); 546 547 if (sc->sc_dying) 548 return EIO; 549 550 /* initialize LCR */ 551 lcr_data = LCR_DATA_BITS_8 | LCR_PARITY_NONE | 552 LCR_STOP_BITS_1; 553 umct_set_lcr(sc, lcr_data); 554 555 if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) { 556 sc->sc_status = 0; /* clear status bit */ 557 sc->sc_intr_buf = kmem_alloc(sc->sc_isize, KM_SLEEP); 558 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_intr_number, 559 USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, 560 sc->sc_intr_buf, sc->sc_isize, 561 umct_intr, USBD_DEFAULT_INTERVAL); 562 if (err) { 563 DPRINTF(("%s: cannot open interrupt pipe (addr %d)\n", 564 device_xname(sc->sc_dev), sc->sc_intr_number)); 565 return EIO; 566 } 567 } 568 569 return 0; 570 } 571 572 void 573 umct_close(void *addr, int portno) 574 { 575 struct umct_softc *sc = addr; 576 577 DPRINTF(("umct_close: close\n")); 578 579 if (sc->sc_dying) 580 return; 581 umct_close_pipe(sc); 582 } 583 584 void 585 umct_intr(struct usbd_xfer *xfer, void *priv, 586 usbd_status status) 587 { 588 struct umct_softc *sc = priv; 589 u_char *tbuf = sc->sc_intr_buf; 590 u_char mstatus; 591 592 if (sc->sc_dying) 593 return; 594 595 if (status != USBD_NORMAL_COMPLETION) { 596 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 597 return; 598 599 DPRINTF(("%s: abnormal status: %s\n", device_xname(sc->sc_dev), 600 usbd_errstr(status))); 601 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); 602 return; 603 } 604 605 DPRINTF(("%s: umct status = MSR:%02x, LSR:%02x\n", 606 device_xname(sc->sc_dev), tbuf[0],tbuf[1])); 607 608 sc->sc_lsr = sc->sc_msr = 0; 609 mstatus = tbuf[0]; 610 if (ISSET(mstatus, MSR_DSR)) 611 sc->sc_msr |= UMSR_DSR; 612 if (ISSET(mstatus, MSR_DCD)) 613 sc->sc_msr |= UMSR_DCD; 614 ucom_status_change(device_private(sc->sc_subdev)); 615 } 616 617 void 618 umct_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 619 { 620 struct umct_softc *sc = addr; 621 622 DPRINTF(("umct_get_status:\n")); 623 624 if (sc->sc_dying) 625 return; 626 627 *lsr = sc->sc_lsr; 628 *msr = sc->sc_msr; 629 } 630
Indexes created Fri Sep 26 20:09:58 GMT 2025