umct.c revision 1.36
1 /* $NetBSD: umct.c,v 1.36 2016/11/25 12:56:29 skrll 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 1.36 2016/11/25 12:56:29 skrll 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 u_char 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 struct ucom_methods umct_methods = { 131 .ucom_get_status = umct_get_status, 132 .ucom_set = umct_set, 133 .ucom_param = umct_param, 134 .ucom_ioctl = NULL, 135 .ucom_open = umct_open, 136 .ucom_close = umct_close, 137 .ucom_read = NULL, 138 .ucom_write = NULL, 139 }; 140 141 static const struct usb_devno umct_devs[] = { 142 /* MCT USB-232 Interface Products */ 143 { USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232 }, 144 /* Sitecom USB-232 Products */ 145 { USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232 }, 146 /* D-Link DU-H3SP USB BAY Hub Products */ 147 { USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232 }, 148 /* BELKIN F5U109 */ 149 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109 }, 150 }; 151 #define umct_lookup(v, p) usb_lookup(umct_devs, v, p) 152 153 int umct_match(device_t, cfdata_t, void *); 154 void umct_attach(device_t, device_t, void *); 155 void umct_childdet(device_t, device_t); 156 int umct_detach(device_t, int); 157 int umct_activate(device_t, enum devact); 158 extern struct cfdriver umct_cd; 159 CFATTACH_DECL2_NEW(umct, sizeof(struct umct_softc), umct_match, 160 umct_attach, umct_detach, umct_activate, NULL, umct_childdet); 161 162 int 163 umct_match(device_t parent, cfdata_t match, void *aux) 164 { 165 struct usb_attach_arg *uaa = aux; 166 167 return umct_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ? 168 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 169 } 170 171 void 172 umct_attach(device_t parent, device_t self, void *aux) 173 { 174 struct umct_softc *sc = device_private(self); 175 struct usb_attach_arg *uaa = aux; 176 struct usbd_device *dev = uaa->uaa_device; 177 usb_config_descriptor_t *cdesc; 178 usb_interface_descriptor_t *id; 179 usb_endpoint_descriptor_t *ed; 180 181 char *devinfop; 182 usbd_status err; 183 int i; 184 struct ucom_attach_args ucaa; 185 186 sc->sc_dev = self; 187 188 aprint_naive("\n"); 189 aprint_normal("\n"); 190 191 devinfop = usbd_devinfo_alloc(dev, 0); 192 aprint_normal_dev(self, "%s\n", devinfop); 193 usbd_devinfo_free(devinfop); 194 195 sc->sc_udev = dev; 196 sc->sc_product = uaa->uaa_product; 197 198 DPRINTF(("\n\numct attach: sc=%p\n", sc)); 199 200 /* initialize endpoints */ 201 ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1; 202 sc->sc_intr_number = -1; 203 sc->sc_intr_pipe = NULL; 204 205 /* Move the device into the configured state. */ 206 err = usbd_set_config_index(dev, UMCT_CONFIG_INDEX, 1); 207 if (err) { 208 aprint_error_dev(self, "failed to set configuration, err=%s\n", 209 usbd_errstr(err)); 210 sc->sc_dying = 1; 211 return; 212 } 213 214 /* get the config descriptor */ 215 cdesc = usbd_get_config_descriptor(sc->sc_udev); 216 217 if (cdesc == NULL) { 218 aprint_error_dev(self, 219 "failed to get configuration descriptor\n"); 220 sc->sc_dying = 1; 221 return; 222 } 223 224 /* get the interface */ 225 err = usbd_device2interface_handle(dev, UMCT_IFACE_INDEX, 226 &sc->sc_iface); 227 if (err) { 228 aprint_error_dev(self, "failed to get interface, err=%s\n", 229 usbd_errstr(err)); 230 sc->sc_dying = 1; 231 return; 232 } 233 234 /* Find the bulk{in,out} and interrupt endpoints */ 235 236 id = usbd_get_interface_descriptor(sc->sc_iface); 237 sc->sc_iface_number = id->bInterfaceNumber; 238 239 for (i = 0; i < id->bNumEndpoints; i++) { 240 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 241 if (ed == NULL) { 242 aprint_error_dev(self, 243 "no endpoint descriptor for %d\n", i); 244 sc->sc_dying = 1; 245 return; 246 } 247 248 /* 249 * The Bulkin endpoint is marked as an interrupt. Since 250 * we can't rely on the endpoint descriptor order, we'll 251 * check the wMaxPacketSize field to differentiate. 252 */ 253 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 254 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT && 255 UGETW(ed->wMaxPacketSize) != 0x2) { 256 ucaa.ucaa_bulkin = ed->bEndpointAddress; 257 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 258 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 259 ucaa.ucaa_bulkout = ed->bEndpointAddress; 260 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 261 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 262 sc->sc_intr_number = ed->bEndpointAddress; 263 sc->sc_isize = UGETW(ed->wMaxPacketSize); 264 } 265 } 266 267 if (ucaa.ucaa_bulkin == -1) { 268 aprint_error_dev(self, "Could not find data bulk in\n"); 269 sc->sc_dying = 1; 270 return; 271 } 272 273 if (ucaa.ucaa_bulkout == -1) { 274 aprint_error_dev(self, "Could not find data bulk out\n"); 275 sc->sc_dying = 1; 276 return; 277 } 278 279 if (sc->sc_intr_number == -1) { 280 aprint_error_dev(self, "Could not find interrupt in\n"); 281 sc->sc_dying = 1; 282 return; 283 } 284 285 sc->sc_dtr = sc->sc_rts = 0; 286 ucaa.ucaa_portno = UCOM_UNK_PORTNO; 287 /* ucaa_bulkin, ucaa_bulkout set above */ 288 ucaa.ucaa_ibufsize = UMCTIBUFSIZE; 289 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232) 290 ucaa.ucaa_obufsize = 16; /* device is broken */ 291 else 292 ucaa.ucaa_obufsize = UMCTOBUFSIZE; 293 ucaa.ucaa_ibufsizepad = UMCTIBUFSIZE; 294 ucaa.ucaa_opkthdrlen = 0; 295 ucaa.ucaa_device = dev; 296 ucaa.ucaa_iface = sc->sc_iface; 297 ucaa.ucaa_methods = &umct_methods; 298 ucaa.ucaa_arg = sc; 299 ucaa.ucaa_info = NULL; 300 301 umct_init(sc); 302 303 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 304 305 DPRINTF(("umct: in=0x%x out=0x%x intr=0x%x\n", 306 ucaa.ucaa_bulkin, ucaa.ucaa_bulkout, sc->sc_intr_number)); 307 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &ucaa, 308 ucomprint, ucomsubmatch); 309 310 return; 311 } 312 313 void 314 umct_childdet(device_t self, device_t child) 315 { 316 struct umct_softc *sc = device_private(self); 317 318 KASSERT(sc->sc_subdev == child); 319 sc->sc_subdev = NULL; 320 } 321 322 int 323 umct_detach(device_t self, int flags) 324 { 325 struct umct_softc *sc = device_private(self); 326 int rv = 0; 327 328 DPRINTF(("umct_detach: sc=%p flags=%d\n", sc, flags)); 329 330 if (sc->sc_intr_pipe != NULL) { 331 usbd_abort_pipe(sc->sc_intr_pipe); 332 usbd_close_pipe(sc->sc_intr_pipe); 333 kmem_free(sc->sc_intr_buf, sc->sc_isize); 334 sc->sc_intr_pipe = NULL; 335 } 336 337 sc->sc_dying = 1; 338 if (sc->sc_subdev != NULL) 339 rv = config_detach(sc->sc_subdev, flags); 340 341 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 342 343 return rv; 344 } 345 346 int 347 umct_activate(device_t self, enum devact act) 348 { 349 struct umct_softc *sc = device_private(self); 350 351 switch (act) { 352 case DVACT_DEACTIVATE: 353 sc->sc_dying = 1; 354 return 0; 355 default: 356 return EOPNOTSUPP; 357 } 358 } 359 360 void 361 umct_set_line_state(struct umct_softc *sc) 362 { 363 usb_device_request_t req; 364 uByte ls; 365 366 ls = (sc->sc_dtr ? MCR_DTR : 0) | 367 (sc->sc_rts ? MCR_RTS : 0); 368 369 DPRINTF(("umct_set_line_state: DTR=%d,RTS=%d,ls=%02x\n", 370 sc->sc_dtr, sc->sc_rts, ls)); 371 372 req.bmRequestType = UMCT_SET_REQUEST; 373 req.bRequest = REQ_SET_MCR; 374 USETW(req.wValue, 0); 375 USETW(req.wIndex, sc->sc_iface_number); 376 USETW(req.wLength, LENGTH_SET_MCR); 377 378 (void)usbd_do_request(sc->sc_udev, &req, &ls); 379 } 380 381 void 382 umct_set(void *addr, int portno, int reg, int onoff) 383 { 384 struct umct_softc *sc = addr; 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 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 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\n", sc)); 501 502 DPRINTF(("umct_param: BAUDRATE=%d\n", t->c_ospeed)); 503 504 if (ISSET(t->c_cflag, CSTOPB)) 505 data |= LCR_STOP_BITS_2; 506 else 507 data |= LCR_STOP_BITS_1; 508 if (ISSET(t->c_cflag, PARENB)) { 509 if (ISSET(t->c_cflag, PARODD)) 510 data |= LCR_PARITY_ODD; 511 else 512 data |= LCR_PARITY_EVEN; 513 } else 514 data |= LCR_PARITY_NONE; 515 switch (ISSET(t->c_cflag, CSIZE)) { 516 case CS5: 517 data |= LCR_DATA_BITS_5; 518 break; 519 case CS6: 520 data |= LCR_DATA_BITS_6; 521 break; 522 case CS7: 523 data |= LCR_DATA_BITS_7; 524 break; 525 case CS8: 526 data |= LCR_DATA_BITS_8; 527 break; 528 } 529 530 umct_set_baudrate(sc, t->c_ospeed); 531 532 sc->last_lcr = data; 533 umct_set_lcr(sc, data); 534 535 return 0; 536 } 537 538 int 539 umct_open(void *addr, int portno) 540 { 541 struct umct_softc *sc = addr; 542 int err, lcr_data; 543 544 if (sc->sc_dying) 545 return EIO; 546 547 DPRINTF(("umct_open: sc=%p\n", sc)); 548 549 /* initialize LCR */ 550 lcr_data = LCR_DATA_BITS_8 | LCR_PARITY_NONE | 551 LCR_STOP_BITS_1; 552 umct_set_lcr(sc, lcr_data); 553 554 if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) { 555 sc->sc_status = 0; /* clear status bit */ 556 sc->sc_intr_buf = kmem_alloc(sc->sc_isize, KM_SLEEP); 557 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_intr_number, 558 USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, 559 sc->sc_intr_buf, sc->sc_isize, 560 umct_intr, USBD_DEFAULT_INTERVAL); 561 if (err) { 562 DPRINTF(("%s: cannot open interrupt pipe (addr %d)\n", 563 device_xname(sc->sc_dev), sc->sc_intr_number)); 564 return EIO; 565 } 566 } 567 568 return 0; 569 } 570 571 void 572 umct_close(void *addr, int portno) 573 { 574 struct umct_softc *sc = addr; 575 int err; 576 577 if (sc->sc_dying) 578 return; 579 580 DPRINTF(("umct_close: close\n")); 581 582 if (sc->sc_intr_pipe != NULL) { 583 err = usbd_abort_pipe(sc->sc_intr_pipe); 584 if (err) 585 printf("%s: abort interrupt pipe failed: %s\n", 586 device_xname(sc->sc_dev), usbd_errstr(err)); 587 err = usbd_close_pipe(sc->sc_intr_pipe); 588 if (err) 589 printf("%s: close interrupt pipe failed: %s\n", 590 device_xname(sc->sc_dev), usbd_errstr(err)); 591 kmem_free(sc->sc_intr_buf, sc->sc_isize); 592 sc->sc_intr_pipe = NULL; 593 } 594 } 595 596 void 597 umct_intr(struct usbd_xfer *xfer, void *priv, 598 usbd_status status) 599 { 600 struct umct_softc *sc = priv; 601 u_char *tbuf = sc->sc_intr_buf; 602 u_char mstatus; 603 604 if (sc->sc_dying) 605 return; 606 607 if (status != USBD_NORMAL_COMPLETION) { 608 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 609 return; 610 611 DPRINTF(("%s: abnormal status: %s\n", device_xname(sc->sc_dev), 612 usbd_errstr(status))); 613 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); 614 return; 615 } 616 617 DPRINTF(("%s: umct status = MSR:%02x, LSR:%02x\n", 618 device_xname(sc->sc_dev), tbuf[0],tbuf[1])); 619 620 sc->sc_lsr = sc->sc_msr = 0; 621 mstatus = tbuf[0]; 622 if (ISSET(mstatus, MSR_DSR)) 623 sc->sc_msr |= UMSR_DSR; 624 if (ISSET(mstatus, MSR_DCD)) 625 sc->sc_msr |= UMSR_DCD; 626 ucom_status_change(device_private(sc->sc_subdev)); 627 } 628 629 void 630 umct_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 631 { 632 struct umct_softc *sc = addr; 633 634 DPRINTF(("umct_get_status:\n")); 635 636 if (lsr != NULL) 637 *lsr = sc->sc_lsr; 638 if (msr != NULL) 639 *msr = sc->sc_msr; 640 } 641
Indexes created Fri Sep 26 20:09:58 GMT 2025