sys/dev/usb/uftdi.c

   1 /*      $NetBSD: uftdi.c,v 1.13 2002/09/23 05:51:23 simonb Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Lennart Augustsson (lennart@augustsson.net).
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD$");
  41
  42 /*
  43  * FTDI FT8U100AX serial adapter driver
  44  */
  45
  46 #include <sys/cdefs.h>
  47
  48 #include <sys/param.h>
  49 #include <sys/systm.h>
  50 #include <sys/kernel.h>
  51 #include <sys/malloc.h>
  52 #include <sys/module.h>
  53 #include <sys/bus.h>
  54 #include <sys/ioccom.h>
  55 #include <sys/fcntl.h>
  56 #include <sys/conf.h>
  57 #include <sys/tty.h>
  58 #include <sys/file.h>
  59
  60 #include <sys/selinfo.h>
  61
  62 #include <sys/sysctl.h>
  63
  64 #include <dev/usb/usb.h>
  65 #include <dev/usb/usbhid.h>
  66
  67 #include <dev/usb/usbdi.h>
  68 #include <dev/usb/usbdi_util.h>
  69 #include "usbdevs.h"
  70
  71 #include <dev/usb/ucomvar.h>
  72
  73 #include <dev/usb/uftdireg.h>
  74
  75 #ifdef USB_DEBUG
  76 static int uftdidebug = 0;
  77 SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi");
  78 SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW,
  79            &uftdidebug, 0, "uftdi debug level");
  80 #define DPRINTF(x)      do { \
  81                                 if (uftdidebug) \
  82                                         printf x; \
  83                         } while (0)
  84
  85 #define DPRINTFN(n, x)  do { \
  86                                 if (uftdidebug > (n)) \
  87                                         printf x; \
  88                         } while (0)
  89
  90 #else
  91 #define DPRINTF(x)
  92 #define DPRINTFN(n,x)
  93 #endif
  94
  95 #define UFTDI_CONFIG_INDEX      0
  96 #define UFTDI_IFACE_INDEX       0
  97
  98
  99 /*
 100  * These are the maximum number of bytes transferred per frame.
 101  * The output buffer size cannot be increased due to the size encoding.
 102  */
 103 #define UFTDIIBUFSIZE 64
 104 #define UFTDIOBUFSIZE 64
 105
 106 struct uftdi_softc {
 107         struct ucom_softc       sc_ucom;
 108         usbd_interface_handle   sc_iface;       /* interface */
 109         enum uftdi_type         sc_type;
 110         u_int                   sc_hdrlen;
 111         u_char                  sc_msr;
 112         u_char                  sc_lsr;
 113         u_int                   last_lcr;
 114 };
 115
 116 static void     uftdi_get_status(void *, int portno, u_char *lsr, u_char *msr);
 117 static void     uftdi_set(void *, int, int, int);
 118 static int      uftdi_param(void *, int, struct termios *);
 119 static int      uftdi_open(void *sc, int portno);
 120 static void     uftdi_read(void *sc, int portno, u_char **ptr,u_int32_t *count);
 121 static void     uftdi_write(void *sc, int portno, u_char *to, u_char *from,
 122                             u_int32_t *count);
 123 static void     uftdi_break(void *sc, int portno, int onoff);
 124 static int      uftdi_8u232am_getrate(speed_t speed, int *rate);
 125
 126 struct ucom_callback uftdi_callback = {
 127         uftdi_get_status,
 128         uftdi_set,
 129         uftdi_param,
 130         NULL,
 131         uftdi_open,
 132         NULL,
 133         uftdi_read,
 134         uftdi_write,
 135 };
 136
 137 static int
 138 uftdi_match(device_t self)
 139 {
 140         struct usb_attach_arg *uaa = device_get_ivars(self);
 141
 142         if (uaa->iface != NULL) {
 143                 if (uaa->vendor == USB_VENDOR_FTDI &&
 144                     (uaa->product == USB_PRODUCT_FTDI_SERIAL_2232C))
 145                         return (UMATCH_VENDOR_IFACESUBCLASS);
 146                 return (UMATCH_NONE);
 147         }
 148
 149         DPRINTFN(20,("uftdi: vendor=0x%x, product=0x%x\n",
 150                      uaa->vendor, uaa->product));
 151
 152         if (uaa->vendor == USB_VENDOR_FTDI &&
 153             (uaa->product == USB_PRODUCT_FTDI_SERIAL_8U100AX ||
 154              uaa->product == USB_PRODUCT_FTDI_SERIAL_8U232AM ||
 155              uaa->product == USB_PRODUCT_FTDI_SEMC_DSS20 ||
 156              uaa->product == USB_PRODUCT_FTDI_CFA_631 ||
 157              uaa->product == USB_PRODUCT_FTDI_CFA_632 ||
 158              uaa->product == USB_PRODUCT_FTDI_CFA_633 ||
 159              uaa->product == USB_PRODUCT_FTDI_CFA_634 ||
 160              uaa->product == USB_PRODUCT_FTDI_CFA_635 ||
 161              uaa->product == USB_PRODUCT_FTDI_USBSERIAL ||
 162              uaa->product == USB_PRODUCT_FTDI_MX2_3 ||
 163              uaa->product == USB_PRODUCT_FTDI_MX4_5 ||
 164              uaa->product == USB_PRODUCT_FTDI_LK202 ||
 165              uaa->product == USB_PRODUCT_FTDI_LK204 ||
 166              uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M ||
 167              uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S ||
 168              uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U ||
 169              uaa->product == USB_PRODUCT_FTDI_EISCOU ||
 170              uaa->product == USB_PRODUCT_FTDI_UOPTBR ||
 171              uaa->product == USB_PRODUCT_FTDI_EMCU2D ||
 172              uaa->product == USB_PRODUCT_FTDI_PCMSFU ||
 173              uaa->product == USB_PRODUCT_FTDI_EMCU2H ))
 174                 return (UMATCH_VENDOR_PRODUCT);
 175         if (uaa->vendor == USB_VENDOR_SIIG2 &&
 176             (uaa->product == USB_PRODUCT_SIIG2_US2308))
 177                 return (UMATCH_VENDOR_PRODUCT);
 178         if (uaa->vendor == USB_VENDOR_INTREPIDCS &&
 179             (uaa->product == USB_PRODUCT_INTREPIDCS_VALUECAN ||
 180             uaa->product == USB_PRODUCT_INTREPIDCS_NEOVI))
 181                 return (UMATCH_VENDOR_PRODUCT);
 182         if (uaa->vendor == USB_VENDOR_BBELECTRONICS &&
 183             (uaa->product == USB_PRODUCT_BBELECTRONICS_USOTL4))
 184                 return (UMATCH_VENDOR_PRODUCT);
 185         if (uaa->vendor == USB_VENDOR_MELCO &&
 186             (uaa->product == USB_PRODUCT_MELCO_PCOPRS1))
 187                 return (UMATCH_VENDOR_PRODUCT);
 188
 189         return (UMATCH_NONE);
 190 }
 191
 192 static int
 193 uftdi_attach(device_t self)
 194 {
 195         struct uftdi_softc *sc = device_get_softc(self);
 196         struct usb_attach_arg *uaa = device_get_ivars(self);
 197         usbd_device_handle dev = uaa->device;
 198         usbd_interface_handle iface;
 199         usb_interface_descriptor_t *id;
 200         usb_endpoint_descriptor_t *ed;
 201         int i;
 202         usbd_status err;
 203         struct ucom_softc *ucom = &sc->sc_ucom;
 204         DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc));
 205
 206         ucom->sc_dev = self;
 207         ucom->sc_udev = dev;
 208
 209         if (uaa->iface == NULL) {
 210                 /* Move the device into the configured state. */
 211                 err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1);
 212                 if (err) {
 213                         device_printf(ucom->sc_dev,
 214                             "failed to set configuration, err=%s\n",
 215                             usbd_errstr(err));
 216                         goto bad;
 217                 }
 218
 219                 err = usbd_device2interface_handle(dev, UFTDI_IFACE_INDEX, &iface);
 220                 if (err) {
 221                         device_printf(ucom->sc_dev,
 222                             "failed to get interface, err=%s\n", usbd_errstr(err));
 223                         goto bad;
 224                 }
 225         } else {
 226                 iface = uaa->iface;
 227         }
 228
 229         id = usbd_get_interface_descriptor(iface);
 230         ucom->sc_iface = iface;
 231         switch( uaa->vendor ){
 232         case USB_VENDOR_FTDI:
 233                 switch( uaa->product ){
 234                 case USB_PRODUCT_FTDI_SERIAL_8U100AX:
 235                         sc->sc_type = UFTDI_TYPE_SIO;
 236                         sc->sc_hdrlen = 1;
 237                         break;
 238                 case USB_PRODUCT_FTDI_SEMC_DSS20:
 239                 case USB_PRODUCT_FTDI_SERIAL_8U232AM:
 240                 case USB_PRODUCT_FTDI_SERIAL_2232C:
 241                 case USB_PRODUCT_FTDI_CFA_631:
 242                 case USB_PRODUCT_FTDI_CFA_632:
 243                 case USB_PRODUCT_FTDI_CFA_633:
 244                 case USB_PRODUCT_FTDI_CFA_634:
 245                 case USB_PRODUCT_FTDI_CFA_635:
 246                 case USB_PRODUCT_FTDI_USBSERIAL:
 247                 case USB_PRODUCT_FTDI_MX2_3:
 248                 case USB_PRODUCT_FTDI_MX4_5:
 249                 case USB_PRODUCT_FTDI_LK202:
 250                 case USB_PRODUCT_FTDI_LK204:
 251                 case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M:
 252                 case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S:
 253                 case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U:
 254                 case USB_PRODUCT_FTDI_EISCOU:
 255                 case USB_PRODUCT_FTDI_UOPTBR:
 256                 case USB_PRODUCT_FTDI_EMCU2D:
 257                 case USB_PRODUCT_FTDI_PCMSFU:
 258                 case USB_PRODUCT_FTDI_EMCU2H:
 259                         sc->sc_type = UFTDI_TYPE_8U232AM;
 260                         sc->sc_hdrlen = 0;
 261                         break;
 262
 263                 default:                /* Can't happen */
 264                         goto bad;
 265                 }
 266                 break;
 267
 268         case USB_VENDOR_INTREPIDCS:
 269                 switch( uaa->product ){
 270                 case USB_PRODUCT_INTREPIDCS_VALUECAN:
 271                 case USB_PRODUCT_INTREPIDCS_NEOVI:
 272                         sc->sc_type = UFTDI_TYPE_8U232AM;
 273                         sc->sc_hdrlen = 0;
 274                         break;
 275
 276                 default:                /* Can't happen */
 277                         goto bad;
 278                 }
 279                 break;
 280
 281         case USB_VENDOR_SIIG2:
 282                 switch( uaa->product ){
 283                 case USB_PRODUCT_SIIG2_US2308:
 284                         sc->sc_type = UFTDI_TYPE_8U232AM;
 285                         sc->sc_hdrlen = 0;
 286                         break;
 287
 288                 default:                /* Can't happen */
 289                         goto bad;
 290                 }
 291                 break;
 292
 293         case USB_VENDOR_BBELECTRONICS:
 294                 switch( uaa->product ){
 295                 case USB_PRODUCT_BBELECTRONICS_USOTL4:
 296                         sc->sc_type = UFTDI_TYPE_8U232AM;
 297                         sc->sc_hdrlen = 0;
 298                         break;
 299
 300                 default:                /* Can't happen */
 301                         goto bad;
 302                 }
 303                 break;
 304
 305         case USB_VENDOR_MELCO:
 306                 switch( uaa->product ){
 307                 case USB_PRODUCT_MELCO_PCOPRS1:
 308                         sc->sc_type = UFTDI_TYPE_8U232AM;
 309                         sc->sc_hdrlen = 0;
 310                         break;
 311
 312                 default:                /* Can't happen */
 313                         goto bad;
 314                 }
 315                 break;
 316
 317         default:                /* Can't happen */
 318                 goto bad;
 319         }
 320
 321         ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
 322
 323         for (i = 0; i < id->bNumEndpoints; i++) {
 324                 int addr, dir, attr;
 325                 ed = usbd_interface2endpoint_descriptor(iface, i);
 326                 if (ed == NULL) {
 327                         device_printf(ucom->sc_dev,
 328                             "could not read endpoint descriptor\n");
 329                         goto bad;
 330                 }
 331
 332                 addr = ed->bEndpointAddress;
 333                 dir = UE_GET_DIR(ed->bEndpointAddress);
 334                 attr = ed->bmAttributes & UE_XFERTYPE;
 335                 if (dir == UE_DIR_IN && attr == UE_BULK)
 336                         ucom->sc_bulkin_no = addr;
 337                 else if (dir == UE_DIR_OUT && attr == UE_BULK)
 338                         ucom->sc_bulkout_no = addr;
 339                 else {
 340                         device_printf(ucom->sc_dev, "unexpected endpoint\n");
 341                         goto bad;
 342                 }
 343         }
 344         if (ucom->sc_bulkin_no == -1) {
 345                 device_printf(ucom->sc_dev, "Could not find data bulk in\n");
 346                 goto bad;
 347         }
 348         if (ucom->sc_bulkout_no == -1) {
 349                 device_printf(ucom->sc_dev, "Could not find data bulk out\n");
 350                 goto bad;
 351         }
 352         ucom->sc_parent  = sc;
 353         if (uaa->iface == NULL)
 354                 ucom->sc_portno = FTDI_PIT_SIOA;
 355         else
 356                 ucom->sc_portno = FTDI_PIT_SIOA + id->bInterfaceNumber;
 357         /* bulkin, bulkout set above */
 358
 359         ucom->sc_ibufsize = UFTDIIBUFSIZE;
 360         ucom->sc_obufsize = UFTDIOBUFSIZE - sc->sc_hdrlen;
 361         ucom->sc_ibufsizepad = UFTDIIBUFSIZE;
 362         ucom->sc_opkthdrlen = sc->sc_hdrlen;
 363
 364
 365         ucom->sc_callback = &uftdi_callback;
 366 #if 0
 367         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, ucom->sc_udev,
 368           ucom->sc_dev);
 369 #endif
 370         DPRINTF(("uftdi: in=0x%x out=0x%x\n", ucom->sc_bulkin_no, ucom->sc_bulkout_no));
 371         ucom_attach(&sc->sc_ucom);
 372         return 0;
 373
 374 bad:
 375         DPRINTF(("uftdi_attach: ATTACH ERROR\n"));
 376         ucom->sc_dying = 1;
 377         return ENXIO;
 378 }
 379 #if 0
 380 int
 381 uftdi_activate(device_t self, enum devact act)
 382 {
 383         struct uftdi_softc *sc = (struct uftdi_softc *)self;
 384         int rv = 0;
 385
 386         switch (act) {
 387         case DVACT_ACTIVATE:
 388                 return (EOPNOTSUPP);
 389
 390         case DVACT_DEACTIVATE:
 391                 if (sc->sc_subdev != NULL)
 392                         rv = config_deactivate(sc->sc_subdev);
 393                 sc->sc_ucom.sc_dying = 1;
 394                 break;
 395         }
 396         return (rv);
 397 }
 398 #endif
 399
 400 static int
 401 uftdi_detach(device_t self)
 402 {
 403         struct uftdi_softc *sc = device_get_softc(self);
 404
 405         int rv = 0;
 406
 407         DPRINTF(("uftdi_detach: sc=%p\n", sc));
 408         sc->sc_ucom.sc_dying = 1;
 409         rv = ucom_detach(&sc->sc_ucom);
 410
 411         return rv;
 412 }
 413
 414 static int
 415 uftdi_open(void *vsc, int portno)
 416 {
 417         struct uftdi_softc *sc = vsc;
 418         struct ucom_softc *ucom = &sc->sc_ucom;
 419         usb_device_request_t req;
 420         usbd_status err;
 421         struct termios t;
 422
 423         DPRINTF(("uftdi_open: sc=%p\n", sc));
 424
 425         if (ucom->sc_dying)
 426                 return (EIO);
 427
 428         /* Perform a full reset on the device */
 429         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 430         req.bRequest = FTDI_SIO_RESET;
 431         USETW(req.wValue, FTDI_SIO_RESET_SIO);
 432         USETW(req.wIndex, portno);
 433         USETW(req.wLength, 0);
 434         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 435         if (err)
 436                 return (EIO);
 437
 438         /* Set 9600 baud, 2 stop bits, no parity, 8 bits */
 439         t.c_ospeed = 9600;
 440         t.c_cflag = CSTOPB | CS8;
 441         (void)uftdi_param(sc, portno, &t);
 442
 443         /* Turn on RTS/CTS flow control */
 444         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 445         req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
 446         USETW(req.wValue, 0);
 447         USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, portno);
 448         USETW(req.wLength, 0);
 449         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 450         if (err)
 451                 return (EIO);
 452
 453         return (0);
 454 }
 455
 456 static void
 457 uftdi_read(void *vsc, int portno, u_char **ptr, u_int32_t *count)
 458 {
 459         struct uftdi_softc *sc = vsc;
 460         u_char msr, lsr;
 461
 462         DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n", sc, portno,
 463                      *count));
 464
 465         msr = FTDI_GET_MSR(*ptr);
 466         lsr = FTDI_GET_LSR(*ptr);
 467
 468 #ifdef USB_DEBUG
 469         if (*count != 2)
 470                 DPRINTFN(10,("uftdi_read: sc=%p, port=%d count=%d data[0]="
 471                             "0x%02x\n", sc, portno, *count, (*ptr)[2]));
 472 #endif
 473
 474         if (sc->sc_msr != msr ||
 475             (sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK)) {
 476                 DPRINTF(("uftdi_read: status change msr=0x%02x(0x%02x) "
 477                          "lsr=0x%02x(0x%02x)\n", msr, sc->sc_msr,
 478                          lsr, sc->sc_lsr));
 479                 sc->sc_msr = msr;
 480                 sc->sc_lsr = lsr;
 481                 ucom_status_change(&sc->sc_ucom);
 482         }
 483
 484         /* Pick up status and adjust data part. */
 485         *ptr += 2;
 486         *count -= 2;
 487 }
 488
 489 static void
 490 uftdi_write(void *vsc, int portno, u_char *to, u_char *from, u_int32_t *count)
 491 {
 492         struct uftdi_softc *sc = vsc;
 493
 494         DPRINTFN(10,("uftdi_write: sc=%p, port=%d count=%u data[0]=0x%02x\n",
 495                      vsc, portno, *count, from[0]));
 496
 497         /* Make length tag and copy data */
 498         if (sc->sc_hdrlen > 0)
 499                 *to = FTDI_OUT_TAG(*count, portno);
 500
 501         memcpy(to + sc->sc_hdrlen, from, *count);
 502         *count += sc->sc_hdrlen;
 503 }
 504
 505 static void
 506 uftdi_set(void *vsc, int portno, int reg, int onoff)
 507 {
 508         struct uftdi_softc *sc = vsc;
 509         struct ucom_softc *ucom = vsc;
 510         usb_device_request_t req;
 511         int ctl;
 512
 513         DPRINTF(("uftdi_set: sc=%p, port=%d reg=%d onoff=%d\n", vsc, portno,
 514                  reg, onoff));
 515
 516         switch (reg) {
 517         case UCOM_SET_DTR:
 518                 ctl = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW;
 519                 break;
 520         case UCOM_SET_RTS:
 521                 ctl = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW;
 522                 break;
 523         case UCOM_SET_BREAK:
 524                 uftdi_break(sc, portno, onoff);
 525                 return;
 526         default:
 527                 return;
 528         }
 529         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 530         req.bRequest = FTDI_SIO_MODEM_CTRL;
 531         USETW(req.wValue, ctl);
 532         USETW(req.wIndex, portno);
 533         USETW(req.wLength, 0);
 534         DPRINTFN(2,("uftdi_set: reqtype=0x%02x req=0x%02x value=0x%04x "
 535                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
 536                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
 537         (void)usbd_do_request(ucom->sc_udev, &req, NULL);
 538 }
 539
 540 static int
 541 uftdi_param(void *vsc, int portno, struct termios *t)
 542 {
 543         struct uftdi_softc *sc = vsc;
 544         struct ucom_softc *ucom = &sc->sc_ucom;
 545         usb_device_request_t req;
 546         usbd_status err;
 547         int rate=0, data, flow;
 548
 549         DPRINTF(("uftdi_param: sc=%p\n", sc));
 550
 551         if (ucom->sc_dying)
 552                 return (EIO);
 553
 554         switch (sc->sc_type) {
 555         case UFTDI_TYPE_SIO:
 556                 switch (t->c_ospeed) {
 557                 case 300: rate = ftdi_sio_b300; break;
 558                 case 600: rate = ftdi_sio_b600; break;
 559                 case 1200: rate = ftdi_sio_b1200; break;
 560                 case 2400: rate = ftdi_sio_b2400; break;
 561                 case 4800: rate = ftdi_sio_b4800; break;
 562                 case 9600: rate = ftdi_sio_b9600; break;
 563                 case 19200: rate = ftdi_sio_b19200; break;
 564                 case 38400: rate = ftdi_sio_b38400; break;
 565                 case 57600: rate = ftdi_sio_b57600; break;
 566                 case 115200: rate = ftdi_sio_b115200; break;
 567                 default:
 568                         return (EINVAL);
 569                 }
 570                 break;
 571
 572         case UFTDI_TYPE_8U232AM:
 573                 if (uftdi_8u232am_getrate(t->c_ospeed, &rate) == -1)
 574                         return (EINVAL);
 575                 break;
 576         }
 577         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 578         req.bRequest = FTDI_SIO_SET_BAUD_RATE;
 579         USETW(req.wValue, rate);
 580         USETW(req.wIndex, portno);
 581         USETW(req.wLength, 0);
 582         DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
 583                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
 584                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
 585         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 586         if (err)
 587                 return (EIO);
 588
 589         if (ISSET(t->c_cflag, CSTOPB))
 590                 data = FTDI_SIO_SET_DATA_STOP_BITS_2;
 591         else
 592                 data = FTDI_SIO_SET_DATA_STOP_BITS_1;
 593         if (ISSET(t->c_cflag, PARENB)) {
 594                 if (ISSET(t->c_cflag, PARODD))
 595                         data |= FTDI_SIO_SET_DATA_PARITY_ODD;
 596                 else
 597                         data |= FTDI_SIO_SET_DATA_PARITY_EVEN;
 598         } else
 599                 data |= FTDI_SIO_SET_DATA_PARITY_NONE;
 600         switch (ISSET(t->c_cflag, CSIZE)) {
 601         case CS5:
 602                 data |= FTDI_SIO_SET_DATA_BITS(5);
 603                 break;
 604         case CS6:
 605                 data |= FTDI_SIO_SET_DATA_BITS(6);
 606                 break;
 607         case CS7:
 608                 data |= FTDI_SIO_SET_DATA_BITS(7);
 609                 break;
 610         case CS8:
 611                 data |= FTDI_SIO_SET_DATA_BITS(8);
 612                 break;
 613         }
 614         sc->last_lcr = data;
 615
 616         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 617         req.bRequest = FTDI_SIO_SET_DATA;
 618         USETW(req.wValue, data);
 619         USETW(req.wIndex, portno);
 620         USETW(req.wLength, 0);
 621         DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
 622                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
 623                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
 624         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 625         if (err)
 626                 return (EIO);
 627
 628         if (ISSET(t->c_cflag, CRTSCTS)) {
 629                 flow = FTDI_SIO_RTS_CTS_HS;
 630                 USETW(req.wValue, 0);
 631         } else if (ISSET(t->c_iflag, IXON|IXOFF)) {
 632                 flow = FTDI_SIO_XON_XOFF_HS;
 633                 USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]);
 634         } else {
 635                 flow = FTDI_SIO_DISABLE_FLOW_CTRL;
 636                 USETW(req.wValue, 0);
 637         }
 638         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 639         req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
 640         USETW2(req.wIndex, flow, portno);
 641         USETW(req.wLength, 0);
 642         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 643         if (err)
 644                 return (EIO);
 645
 646         return (0);
 647 }
 648
 649 void
 650 uftdi_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
 651 {
 652         struct uftdi_softc *sc = vsc;
 653
 654         DPRINTF(("uftdi_status: msr=0x%02x lsr=0x%02x\n",
 655                  sc->sc_msr, sc->sc_lsr));
 656
 657         if (msr != NULL)
 658                 *msr = sc->sc_msr;
 659         if (lsr != NULL)
 660                 *lsr = sc->sc_lsr;
 661 }
 662
 663 void
 664 uftdi_break(void *vsc, int portno, int onoff)
 665 {
 666         struct uftdi_softc *sc = vsc;
 667         struct ucom_softc *ucom = vsc;
 668
 669         usb_device_request_t req;
 670         int data;
 671
 672         DPRINTF(("uftdi_break: sc=%p, port=%d onoff=%d\n", vsc, portno,
 673                   onoff));
 674
 675         if (onoff) {
 676                 data = sc->last_lcr | FTDI_SIO_SET_BREAK;
 677         } else {
 678                 data = sc->last_lcr;
 679         }
 680
 681         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 682         req.bRequest = FTDI_SIO_SET_DATA;
 683         USETW(req.wValue, data);
 684         USETW(req.wIndex, portno);
 685         USETW(req.wLength, 0);
 686         (void)usbd_do_request(ucom->sc_udev, &req, NULL);
 687 }
 688
 689 static int
 690 uftdi_8u232am_getrate(speed_t speed, int *rate)
 691 {
 692         /* Table of the nearest even powers-of-2 for values 0..15. */
 693         static const unsigned char roundoff[16] = {
 694                 0, 2, 2, 4,  4,  4,  8,  8,
 695                 8, 8, 8, 8, 16, 16, 16, 16,
 696         };
 697
 698         unsigned int d, freq;
 699         int result;
 700
 701         if (speed <= 0)
 702                 return (-1);
 703
 704         /* Special cases for 2M and 3M. */
 705         if (speed >= 3000000 * 100 / 103 &&
 706             speed <= 3000000 * 100 / 97) {
 707                 result = 0;
 708                 goto done;
 709         }
 710         if (speed >= 2000000 * 100 / 103 &&
 711             speed <= 2000000 * 100 / 97) {
 712                 result = 1;
 713                 goto done;
 714         }
 715
 716         d = (FTDI_8U232AM_FREQ << 4) / speed;
 717         d = (d & ~15) + roundoff[d & 15];
 718
 719         if (d < FTDI_8U232AM_MIN_DIV)
 720                 d = FTDI_8U232AM_MIN_DIV;
 721         else if (d > FTDI_8U232AM_MAX_DIV)
 722                 d = FTDI_8U232AM_MAX_DIV;
 723
 724         /*
 725          * Calculate the frequency needed for d to exactly divide down
 726          * to our target speed, and check that the actual frequency is
 727          * within 3% of this.
 728          */
 729         freq = speed * d;
 730         if (freq < (quad_t)(FTDI_8U232AM_FREQ << 4) * 100 / 103 ||
 731             freq > (quad_t)(FTDI_8U232AM_FREQ << 4) * 100 / 97)
 732                 return (-1);
 733
 734         /*
 735          * Pack the divisor into the resultant value.  The lower
 736          * 14-bits hold the integral part, while the upper 2 bits
 737          * encode the fractional component: either 0, 0.5, 0.25, or
 738          * 0.125.
 739          */
 740         result = d >> 4;
 741         if (d & 8)
 742                 result |= 0x4000;
 743         else if (d & 4)
 744                 result |= 0x8000;
 745         else if (d & 2)
 746                 result |= 0xc000;
 747
 748 done:
 749         *rate = result;
 750         return (0);
 751 }
 752
 753 static device_method_t uftdi_methods[] = {
 754         /* Device interface */
 755         DEVMETHOD(device_probe, uftdi_match),
 756         DEVMETHOD(device_attach, uftdi_attach),
 757         DEVMETHOD(device_detach, uftdi_detach),
 758
 759         { 0, 0 }
 760 };
 761
 762 static driver_t uftdi_driver = {
 763         "ucom",
 764         uftdi_methods,
 765         sizeof (struct uftdi_softc)
 766 };
 767
 768 DRIVER_MODULE(uftdi, uhub, uftdi_driver, ucom_devclass, usbd_driver_load, 0);
 769 MODULE_DEPEND(uftdi, usb, 1, 1, 1);
 770 MODULE_DEPEND(uftdi, ucom,UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);