Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/usb/umct.c
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1 /* $NetBSD: umct.c,v 1.12.2.1 2004/07/10 13:02:11 tron 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@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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * MCT USB-RS232 Interface Controller 40 * http://www.mct.com.tw/prod/rs232.html 41 * http://www.dlink.com/products/usb/dsbs25 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: umct.c,v 1.12.2.1 2004/07/10 13:02:11 tron Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/malloc.h> 51 #include <sys/ioctl.h> 52 #include <sys/conf.h> 53 #include <sys/tty.h> 54 #include <sys/file.h> 55 #include <sys/select.h> 56 #include <sys/proc.h> 57 #include <sys/vnode.h> 58 #include <sys/device.h> 59 #include <sys/poll.h> 60 61 #include <dev/usb/usb.h> 62 #include <dev/usb/usbcdc.h> 63 64 #include <dev/usb/usbdi.h> 65 #include <dev/usb/usbdi_util.h> 66 #include <dev/usb/usbdevs.h> 67 #include <dev/usb/usb_quirks.h> 68 69 #include <dev/usb/usbdevs.h> 70 #include <dev/usb/ucomvar.h> 71 72 #include <dev/usb/umct.h> 73 74 #ifdef UMCT_DEBUG 75 #define DPRINTFN(n, x) if (umctdebug > (n)) logprintf x 76 int umctdebug = 0; 77 #else 78 #define DPRINTFN(n, x) 79 #endif 80 #define DPRINTF(x) DPRINTFN(0, x) 81 82 #define UMCT_CONFIG_INDEX 0 83 #define UMCT_IFACE_INDEX 0 84 85 struct umct_softc { 86 USBBASEDEVICE sc_dev; /* base device */ 87 usbd_device_handle sc_udev; /* USB device */ 88 usbd_interface_handle sc_iface; /* interface */ 89 int sc_iface_number; /* interface number */ 90 u_int16_t sc_product; 91 92 int sc_intr_number; /* interrupt number */ 93 usbd_pipe_handle sc_intr_pipe; /* interrupt pipe */ 94 u_char *sc_intr_buf; /* interrupt buffer */ 95 int sc_isize; 96 97 usb_cdc_line_state_t sc_line_state; /* current line state */ 98 u_char sc_dtr; /* current DTR state */ 99 u_char sc_rts; /* current RTS state */ 100 u_char sc_break; /* set break */ 101 102 u_char sc_status; 103 104 device_ptr_t sc_subdev; /* ucom device */ 105 106 u_char sc_dying; /* disconnecting */ 107 108 u_char sc_lsr; /* Local status register */ 109 u_char sc_msr; /* umct status register */ 110 111 u_int last_lcr; /* keep lcr register */ 112 }; 113 114 /* 115 * These are the maximum number of bytes transferred per frame. 116 * The output buffer size cannot be increased due to the size encoding. 117 */ 118 #define UMCTIBUFSIZE 256 119 #define UMCTOBUFSIZE 256 120 121 Static void umct_init(struct umct_softc *); 122 Static void umct_set_baudrate(struct umct_softc *, u_int); 123 Static void umct_set_lcr(struct umct_softc *, u_int); 124 Static void umct_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 125 126 Static void umct_set(void *, int, int, int); 127 Static void umct_dtr(struct umct_softc *, int); 128 Static void umct_rts(struct umct_softc *, int); 129 Static void umct_break(struct umct_softc *, int); 130 Static void umct_set_line_state(struct umct_softc *); 131 Static void umct_get_status(void *, int portno, u_char *lsr, u_char *msr); 132 Static int umct_param(void *, int, struct termios *); 133 Static int umct_open(void *, int); 134 Static void umct_close(void *, int); 135 136 struct ucom_methods umct_methods = { 137 umct_get_status, 138 umct_set, 139 umct_param, 140 NULL, 141 umct_open, 142 umct_close, 143 NULL, 144 NULL, 145 }; 146 147 static const struct usb_devno umct_devs[] = { 148 /* MCT USB-232 Interface Products */ 149 { USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232 }, 150 /* Sitecom USB-232 Products */ 151 { USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232 }, 152 /* D-Link DU-H3SP USB BAY Hub Products */ 153 { USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232 }, 154 /* BELKIN F5U109 */ 155 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109 }, 156 }; 157 #define umct_lookup(v, p) usb_lookup(umct_devs, v, p) 158 159 USB_DECLARE_DRIVER(umct); 160 161 USB_MATCH(umct) 162 { 163 USB_MATCH_START(umct, uaa); 164 165 if (uaa->iface != NULL) 166 return (UMATCH_NONE); 167 168 return (umct_lookup(uaa->vendor, uaa->product) != NULL ? 169 UMATCH_VENDOR_PRODUCT : UMATCH_NONE); 170 } 171 172 USB_ATTACH(umct) 173 { 174 USB_ATTACH_START(umct, sc, uaa); 175 usbd_device_handle dev = uaa->device; 176 usb_config_descriptor_t *cdesc; 177 usb_interface_descriptor_t *id; 178 usb_endpoint_descriptor_t *ed; 179 180 char devinfo[1024]; 181 char *devname = USBDEVNAME(sc->sc_dev); 182 usbd_status err; 183 int i; 184 struct ucom_attach_args uca; 185 186 usbd_devinfo(dev, 0, devinfo); 187 USB_ATTACH_SETUP; 188 printf("%s: %s\n", devname, devinfo); 189 190 sc->sc_udev = dev; 191 sc->sc_product = uaa->product; 192 193 DPRINTF(("\n\numct attach: sc=%p\n", sc)); 194 195 /* initialize endpoints */ 196 uca.bulkin = uca.bulkout = -1; 197 sc->sc_intr_number = -1; 198 sc->sc_intr_pipe = NULL; 199 200 /* Move the device into the configured state. */ 201 err = usbd_set_config_index(dev, UMCT_CONFIG_INDEX, 1); 202 if (err) { 203 printf("\n%s: failed to set configuration, err=%s\n", 204 devname, usbd_errstr(err)); 205 sc->sc_dying = 1; 206 USB_ATTACH_ERROR_RETURN; 207 } 208 209 /* get the config descriptor */ 210 cdesc = usbd_get_config_descriptor(sc->sc_udev); 211 212 if (cdesc == NULL) { 213 printf("%s: failed to get configuration descriptor\n", 214 USBDEVNAME(sc->sc_dev)); 215 sc->sc_dying = 1; 216 USB_ATTACH_ERROR_RETURN; 217 } 218 219 /* get the interface */ 220 err = usbd_device2interface_handle(dev, UMCT_IFACE_INDEX, 221 &sc->sc_iface); 222 if (err) { 223 printf("\n%s: failed to get interface, err=%s\n", 224 devname, usbd_errstr(err)); 225 sc->sc_dying = 1; 226 USB_ATTACH_ERROR_RETURN; 227 } 228 229 /* Find the bulk{in,out} and interrupt endpoints */ 230 231 id = usbd_get_interface_descriptor(sc->sc_iface); 232 sc->sc_iface_number = id->bInterfaceNumber; 233 234 for (i = 0; i < id->bNumEndpoints; i++) { 235 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 236 if (ed == NULL) { 237 printf("%s: no endpoint descriptor for %d\n", 238 USBDEVNAME(sc->sc_dev), i); 239 sc->sc_dying = 1; 240 USB_ATTACH_ERROR_RETURN; 241 } 242 243 /* 244 * The Bulkin endpoint is marked as an interrupt. Since 245 * we can't rely on the endpoint descriptor order, we'll 246 * check the wMaxPacketSize field to differentiate. 247 */ 248 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 249 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT && 250 UGETW(ed->wMaxPacketSize) != 0x2) { 251 uca.bulkin = ed->bEndpointAddress; 252 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 253 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 254 uca.bulkout = ed->bEndpointAddress; 255 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 256 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 257 sc->sc_intr_number = ed->bEndpointAddress; 258 sc->sc_isize = UGETW(ed->wMaxPacketSize); 259 } 260 } 261 262 if (uca.bulkin == -1) { 263 printf("%s: Could not find data bulk in\n", 264 USBDEVNAME(sc->sc_dev)); 265 sc->sc_dying = 1; 266 USB_ATTACH_ERROR_RETURN; 267 } 268 269 if (uca.bulkout == -1) { 270 printf("%s: Could not find data bulk out\n", 271 USBDEVNAME(sc->sc_dev)); 272 sc->sc_dying = 1; 273 USB_ATTACH_ERROR_RETURN; 274 } 275 276 if (sc->sc_intr_number== -1) { 277 printf("%s: Could not find interrupt in\n", 278 USBDEVNAME(sc->sc_dev)); 279 sc->sc_dying = 1; 280 USB_ATTACH_ERROR_RETURN; 281 } 282 283 sc->sc_dtr = sc->sc_rts = 0; 284 uca.portno = UCOM_UNK_PORTNO; 285 /* bulkin, bulkout set above */ 286 uca.ibufsize = UMCTIBUFSIZE; 287 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232) 288 uca.obufsize = 16; /* device is broken */ 289 else 290 uca.obufsize = UMCTOBUFSIZE; 291 uca.ibufsizepad = UMCTIBUFSIZE; 292 uca.opkthdrlen = 0; 293 uca.device = dev; 294 uca.iface = sc->sc_iface; 295 uca.methods = &umct_methods; 296 uca.arg = sc; 297 uca.info = NULL; 298 299 umct_init(sc); 300 301 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 302 USBDEV(sc->sc_dev)); 303 304 DPRINTF(("umct: in=0x%x out=0x%x intr=0x%x\n", 305 uca.bulkin, uca.bulkout, sc->sc_intr_number )); 306 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 307 308 USB_ATTACH_SUCCESS_RETURN; 309 } 310 311 USB_DETACH(umct) 312 { 313 USB_DETACH_START(umct, sc); 314 int rv = 0; 315 316 DPRINTF(("umct_detach: sc=%p flags=%d\n", sc, flags)); 317 318 if (sc->sc_intr_pipe != NULL) { 319 usbd_abort_pipe(sc->sc_intr_pipe); 320 usbd_close_pipe(sc->sc_intr_pipe); 321 free(sc->sc_intr_buf, M_USBDEV); 322 sc->sc_intr_pipe = NULL; 323 } 324 325 sc->sc_dying = 1; 326 if (sc->sc_subdev != NULL) { 327 rv = config_detach(sc->sc_subdev, flags); 328 sc->sc_subdev = NULL; 329 } 330 331 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 332 USBDEV(sc->sc_dev)); 333 334 return (rv); 335 } 336 337 int 338 umct_activate(device_ptr_t self, enum devact act) 339 { 340 struct umct_softc *sc = (struct umct_softc *)self; 341 int rv = 0; 342 343 switch (act) { 344 case DVACT_ACTIVATE: 345 return (EOPNOTSUPP); 346 347 case DVACT_DEACTIVATE: 348 if (sc->sc_subdev != NULL) 349 rv = config_deactivate(sc->sc_subdev); 350 sc->sc_dying = 1; 351 break; 352 } 353 return (rv); 354 } 355 356 void 357 umct_set_line_state(struct umct_softc *sc) 358 { 359 usb_device_request_t req; 360 uByte ls; 361 362 ls = (sc->sc_dtr ? MCR_DTR : 0) | 363 (sc->sc_rts ? MCR_RTS : 0); 364 365 DPRINTF(("umct_set_line_state: DTR=%d,RTS=%d,ls=%02x\n", 366 sc->sc_dtr, sc->sc_rts, ls)); 367 368 req.bmRequestType = UMCT_SET_REQUEST; 369 req.bRequest = REQ_SET_MCR; 370 USETW(req.wValue, 0); 371 USETW(req.wIndex, sc->sc_iface_number); 372 USETW(req.wLength, LENGTH_SET_MCR); 373 374 (void)usbd_do_request(sc->sc_udev, &req, &ls); 375 } 376 377 void 378 umct_set(void *addr, int portno, int reg, int onoff) 379 { 380 struct umct_softc *sc = addr; 381 382 switch (reg) { 383 case UCOM_SET_DTR: 384 umct_dtr(sc, onoff); 385 break; 386 case UCOM_SET_RTS: 387 umct_rts(sc, onoff); 388 break; 389 case UCOM_SET_BREAK: 390 umct_break(sc, onoff); 391 break; 392 default: 393 break; 394 } 395 } 396 397 void 398 umct_dtr(struct umct_softc *sc, int onoff) 399 { 400 401 DPRINTF(("umct_dtr: onoff=%d\n", onoff)); 402 403 if (sc->sc_dtr == onoff) 404 return; 405 sc->sc_dtr = onoff; 406 407 umct_set_line_state(sc); 408 } 409 410 void 411 umct_rts(struct umct_softc *sc, int onoff) 412 { 413 DPRINTF(("umct_rts: onoff=%d\n", onoff)); 414 415 if (sc->sc_rts == onoff) 416 return; 417 sc->sc_rts = onoff; 418 419 umct_set_line_state(sc); 420 } 421 422 void 423 umct_break(struct umct_softc *sc, int onoff) 424 { 425 DPRINTF(("umct_break: onoff=%d\n", onoff)); 426 427 umct_set_lcr(sc, onoff ? sc->last_lcr | LCR_SET_BREAK : 428 sc->last_lcr); 429 } 430 431 void 432 umct_set_lcr(struct umct_softc *sc, u_int data) 433 { 434 usb_device_request_t req; 435 uByte adata; 436 437 adata = data; 438 req.bmRequestType = UMCT_SET_REQUEST; 439 req.bRequest = REQ_SET_LCR; 440 USETW(req.wValue, 0); 441 USETW(req.wIndex, sc->sc_iface_number); 442 USETW(req.wLength, LENGTH_SET_LCR); 443 444 (void)usbd_do_request(sc->sc_udev, &req, &adata); /* XXX should check */ 445 } 446 447 void 448 umct_set_baudrate(struct umct_softc *sc, u_int rate) 449 { 450 usb_device_request_t req; 451 uDWord arate; 452 u_int val; 453 454 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232 || 455 sc->sc_product == USB_PRODUCT_BELKIN_F5U109) { 456 switch (rate) { 457 case 300: val = 0x01; break; 458 case 600: val = 0x02; break; 459 case 1200: val = 0x03; break; 460 case 2400: val = 0x04; break; 461 case 4800: val = 0x06; break; 462 case 9600: val = 0x08; break; 463 case 19200: val = 0x09; break; 464 case 38400: val = 0x0a; break; 465 case 57600: val = 0x0b; break; 466 case 115200: val = 0x0c; break; 467 default: val = -1; break; 468 } 469 } else { 470 val = UMCT_BAUD_RATE(rate); 471 } 472 USETDW(arate, val); 473 474 req.bmRequestType = UMCT_SET_REQUEST; 475 req.bRequest = REQ_SET_BAUD_RATE; 476 USETW(req.wValue, 0); 477 USETW(req.wIndex, sc->sc_iface_number); 478 USETW(req.wLength, LENGTH_BAUD_RATE); 479 480 (void)usbd_do_request(sc->sc_udev, &req, arate); /* XXX should check */ 481 } 482 483 void 484 umct_init(struct umct_softc *sc) 485 { 486 umct_set_baudrate(sc, 9600); 487 umct_set_lcr(sc, LCR_DATA_BITS_8 | LCR_PARITY_NONE | LCR_STOP_BITS_1); 488 } 489 490 int 491 umct_param(void *addr, int portno, struct termios *t) 492 { 493 struct umct_softc *sc = addr; 494 u_int data = 0; 495 496 DPRINTF(("umct_param: sc=%p\n", sc)); 497 498 DPRINTF(("umct_param: BAUDRATE=%d\n", t->c_ospeed)); 499 500 if (ISSET(t->c_cflag, CSTOPB)) 501 data |= LCR_STOP_BITS_2; 502 else 503 data |= LCR_STOP_BITS_1; 504 if (ISSET(t->c_cflag, PARENB)) { 505 if (ISSET(t->c_cflag, PARODD)) 506 data |= LCR_PARITY_ODD; 507 else 508 data |= LCR_PARITY_EVEN; 509 } else 510 data |= LCR_PARITY_NONE; 511 switch (ISSET(t->c_cflag, CSIZE)) { 512 case CS5: 513 data |= LCR_DATA_BITS_5; 514 break; 515 case CS6: 516 data |= LCR_DATA_BITS_6; 517 break; 518 case CS7: 519 data |= LCR_DATA_BITS_7; 520 break; 521 case CS8: 522 data |= LCR_DATA_BITS_8; 523 break; 524 } 525 526 umct_set_baudrate(sc, t->c_ospeed); 527 528 sc->last_lcr = data; 529 umct_set_lcr(sc, data); 530 531 return (0); 532 } 533 534 int 535 umct_open(void *addr, int portno) 536 { 537 struct umct_softc *sc = addr; 538 int err, lcr_data; 539 540 if (sc->sc_dying) 541 return (EIO); 542 543 DPRINTF(("umct_open: sc=%p\n", sc)); 544 545 /* initialize LCR */ 546 lcr_data = LCR_DATA_BITS_8 | LCR_PARITY_NONE | 547 LCR_STOP_BITS_1; 548 umct_set_lcr(sc, lcr_data); 549 550 if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) { 551 sc->sc_status = 0; /* clear status bit */ 552 sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK); 553 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_intr_number, 554 USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, 555 sc->sc_intr_buf, sc->sc_isize, 556 umct_intr, USBD_DEFAULT_INTERVAL); 557 if (err) { 558 DPRINTF(("%s: cannot open interrupt pipe (addr %d)\n", 559 USBDEVNAME(sc->sc_dev), sc->sc_intr_number)); 560 return (EIO); 561 } 562 } 563 564 return (0); 565 } 566 567 void 568 umct_close(void *addr, int portno) 569 { 570 struct umct_softc *sc = addr; 571 int err; 572 573 if (sc->sc_dying) 574 return; 575 576 DPRINTF(("umct_close: close\n")); 577 578 if (sc->sc_intr_pipe != NULL) { 579 err = usbd_abort_pipe(sc->sc_intr_pipe); 580 if (err) 581 printf("%s: abort interrupt pipe failed: %s\n", 582 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 583 err = usbd_close_pipe(sc->sc_intr_pipe); 584 if (err) 585 printf("%s: close interrupt pipe failed: %s\n", 586 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 587 free(sc->sc_intr_buf, M_USBDEV); 588 sc->sc_intr_pipe = NULL; 589 } 590 } 591 592 void 593 umct_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 594 { 595 struct umct_softc *sc = priv; 596 u_char *buf = sc->sc_intr_buf; 597 u_char mstatus; 598 599 if (sc->sc_dying) 600 return; 601 602 if (status != USBD_NORMAL_COMPLETION) { 603 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 604 return; 605 606 DPRINTF(("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev), 607 usbd_errstr(status))); 608 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); 609 return; 610 } 611 612 DPRINTF(("%s: umct status = MSR:%02x, LSR:%02x\n", 613 USBDEVNAME(sc->sc_dev), buf[0],buf[1])); 614 615 sc->sc_lsr = sc->sc_msr = 0; 616 mstatus = buf[0]; 617 if (ISSET(mstatus, MSR_DSR)) 618 sc->sc_msr |= UMSR_DSR; 619 if (ISSET(mstatus, MSR_DCD)) 620 sc->sc_msr |= UMSR_DCD; 621 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 622 } 623 624 void 625 umct_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 626 { 627 struct umct_softc *sc = addr; 628 629 DPRINTF(("umct_get_status:\n")); 630 631 if (lsr != NULL) 632 *lsr = sc->sc_lsr; 633 if (msr != NULL) 634 *msr = sc->sc_msr; 635 }
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