The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/uftdi.c

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    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: releng/7.3/sys/dev/usb/uftdi.c 170987 2007-06-22 05:53:05Z imp $");
   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 
  125 struct ucom_callback uftdi_callback = {
  126         uftdi_get_status,
  127         uftdi_set,
  128         uftdi_param,
  129         NULL,
  130         uftdi_open,
  131         NULL,
  132         uftdi_read,
  133         uftdi_write,
  134 };
  135 
  136 static int
  137 uftdi_match(device_t self)
  138 {
  139         struct usb_attach_arg *uaa = device_get_ivars(self);
  140 
  141         if (uaa->iface != NULL) {
  142                 if (uaa->vendor == USB_VENDOR_FTDI &&
  143                     (uaa->product == USB_PRODUCT_FTDI_SERIAL_2232C))
  144                         return (UMATCH_VENDOR_IFACESUBCLASS);
  145                 return (UMATCH_NONE);
  146         }
  147 
  148         DPRINTFN(20,("uftdi: vendor=0x%x, product=0x%x\n",
  149                      uaa->vendor, uaa->product));
  150 
  151         if (uaa->vendor == USB_VENDOR_FTDI &&
  152             (uaa->product == USB_PRODUCT_FTDI_SERIAL_8U100AX ||
  153              uaa->product == USB_PRODUCT_FTDI_SERIAL_8U232AM ||
  154              uaa->product == USB_PRODUCT_FTDI_SEMC_DSS20 ||
  155              uaa->product == USB_PRODUCT_FTDI_CFA_631 ||
  156              uaa->product == USB_PRODUCT_FTDI_CFA_632 ||
  157              uaa->product == USB_PRODUCT_FTDI_CFA_633 ||
  158              uaa->product == USB_PRODUCT_FTDI_CFA_634 ||
  159              uaa->product == USB_PRODUCT_FTDI_CFA_635 ||
  160              uaa->product == USB_PRODUCT_FTDI_USBSERIAL ||
  161              uaa->product == USB_PRODUCT_FTDI_MX2_3 ||
  162              uaa->product == USB_PRODUCT_FTDI_MX4_5 ||
  163              uaa->product == USB_PRODUCT_FTDI_LK202 ||
  164              uaa->product == USB_PRODUCT_FTDI_LK204 ||
  165              uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M ||
  166              uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S ||
  167              uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U ||
  168              uaa->product == USB_PRODUCT_FTDI_EISCOU ||
  169              uaa->product == USB_PRODUCT_FTDI_UOPTBR ||
  170              uaa->product == USB_PRODUCT_FTDI_EMCU2D ||
  171              uaa->product == USB_PRODUCT_FTDI_PCMSFU ||
  172              uaa->product == USB_PRODUCT_FTDI_EMCU2H ))
  173                 return (UMATCH_VENDOR_PRODUCT);
  174         if (uaa->vendor == USB_VENDOR_SIIG2 &&
  175             (uaa->product == USB_PRODUCT_SIIG2_US2308))
  176                 return (UMATCH_VENDOR_PRODUCT);
  177         if (uaa->vendor == USB_VENDOR_INTREPIDCS &&
  178             (uaa->product == USB_PRODUCT_INTREPIDCS_VALUECAN ||
  179             uaa->product == USB_PRODUCT_INTREPIDCS_NEOVI))
  180                 return (UMATCH_VENDOR_PRODUCT);
  181         if (uaa->vendor == USB_VENDOR_BBELECTRONICS &&
  182             (uaa->product == USB_PRODUCT_BBELECTRONICS_USOTL4))
  183                 return (UMATCH_VENDOR_PRODUCT);
  184         if (uaa->vendor == USB_VENDOR_MELCO &&
  185             (uaa->product == USB_PRODUCT_MELCO_PCOPRS1))
  186                 return (UMATCH_VENDOR_PRODUCT);
  187 
  188         return (UMATCH_NONE);
  189 }
  190 
  191 static int
  192 uftdi_attach(device_t self)
  193 {
  194         struct uftdi_softc *sc = device_get_softc(self);
  195         struct usb_attach_arg *uaa = device_get_ivars(self);
  196         usbd_device_handle dev = uaa->device;
  197         usbd_interface_handle iface;
  198         usb_interface_descriptor_t *id;
  199         usb_endpoint_descriptor_t *ed;
  200         int i;
  201         usbd_status err;
  202         struct ucom_softc *ucom = &sc->sc_ucom;
  203         DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc));
  204 
  205         ucom->sc_dev = self;
  206         ucom->sc_udev = dev;
  207 
  208         if (uaa->iface == NULL) {
  209                 /* Move the device into the configured state. */
  210                 err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1);
  211                 if (err) {
  212                         device_printf(ucom->sc_dev,
  213                             "failed to set configuration, err=%s\n",
  214                             usbd_errstr(err));
  215                         goto bad;
  216                 }
  217 
  218                 err = usbd_device2interface_handle(dev, UFTDI_IFACE_INDEX, &iface);
  219                 if (err) {
  220                         device_printf(ucom->sc_dev,
  221                             "failed to get interface, err=%s\n", usbd_errstr(err));
  222                         goto bad;
  223                 }
  224         } else {
  225                 iface = uaa->iface;
  226         }
  227 
  228         id = usbd_get_interface_descriptor(iface);
  229         ucom->sc_iface = iface;
  230         switch( uaa->vendor ){
  231         case USB_VENDOR_FTDI:
  232                 switch( uaa->product ){
  233                 case USB_PRODUCT_FTDI_SERIAL_8U100AX:
  234                         sc->sc_type = UFTDI_TYPE_SIO;
  235                         sc->sc_hdrlen = 1;
  236                         break;
  237                 case USB_PRODUCT_FTDI_SEMC_DSS20:
  238                 case USB_PRODUCT_FTDI_SERIAL_8U232AM:
  239                 case USB_PRODUCT_FTDI_SERIAL_2232C:
  240                 case USB_PRODUCT_FTDI_CFA_631:
  241                 case USB_PRODUCT_FTDI_CFA_632:
  242                 case USB_PRODUCT_FTDI_CFA_633:
  243                 case USB_PRODUCT_FTDI_CFA_634:
  244                 case USB_PRODUCT_FTDI_CFA_635:
  245                 case USB_PRODUCT_FTDI_USBSERIAL:
  246                 case USB_PRODUCT_FTDI_MX2_3:
  247                 case USB_PRODUCT_FTDI_MX4_5:
  248                 case USB_PRODUCT_FTDI_LK202:
  249                 case USB_PRODUCT_FTDI_LK204:
  250                 case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M:
  251                 case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S:
  252                 case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U:
  253                 case USB_PRODUCT_FTDI_EISCOU:
  254                 case USB_PRODUCT_FTDI_UOPTBR:
  255                 case USB_PRODUCT_FTDI_EMCU2D:
  256                 case USB_PRODUCT_FTDI_PCMSFU:
  257                 case USB_PRODUCT_FTDI_EMCU2H:
  258                         sc->sc_type = UFTDI_TYPE_8U232AM;
  259                         sc->sc_hdrlen = 0;
  260                         break;
  261 
  262                 default:                /* Can't happen */
  263                         goto bad;
  264                 }
  265                 break;
  266 
  267         case USB_VENDOR_INTREPIDCS:
  268                 switch( uaa->product ){
  269                 case USB_PRODUCT_INTREPIDCS_VALUECAN:
  270                 case USB_PRODUCT_INTREPIDCS_NEOVI:
  271                         sc->sc_type = UFTDI_TYPE_8U232AM;
  272                         sc->sc_hdrlen = 0;
  273                         break;
  274 
  275                 default:                /* Can't happen */
  276                         goto bad;
  277                 }
  278                 break;
  279 
  280         case USB_VENDOR_SIIG2:
  281                 switch( uaa->product ){
  282                 case USB_PRODUCT_SIIG2_US2308:
  283                         sc->sc_type = UFTDI_TYPE_8U232AM;
  284                         sc->sc_hdrlen = 0;
  285                         break;
  286 
  287                 default:                /* Can't happen */
  288                         goto bad;
  289                 }
  290                 break;
  291 
  292         case USB_VENDOR_BBELECTRONICS:
  293                 switch( uaa->product ){
  294                 case USB_PRODUCT_BBELECTRONICS_USOTL4:
  295                         sc->sc_type = UFTDI_TYPE_8U232AM;
  296                         sc->sc_hdrlen = 0;
  297                         break;
  298 
  299                 default:                /* Can't happen */
  300                         goto bad;
  301                 }
  302                 break;
  303 
  304         case USB_VENDOR_MELCO:
  305                 switch( uaa->product ){
  306                 case USB_PRODUCT_MELCO_PCOPRS1:
  307                         sc->sc_type = UFTDI_TYPE_8U232AM;
  308                         sc->sc_hdrlen = 0;
  309                         break;
  310 
  311                 default:                /* Can't happen */
  312                         goto bad;
  313                 }
  314                 break;
  315 
  316         default:                /* Can't happen */
  317                 goto bad;
  318         }
  319 
  320         ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
  321 
  322         for (i = 0; i < id->bNumEndpoints; i++) {
  323                 int addr, dir, attr;
  324                 ed = usbd_interface2endpoint_descriptor(iface, i);
  325                 if (ed == NULL) {
  326                         device_printf(ucom->sc_dev,
  327                             "could not read endpoint descriptor\n");
  328                         goto bad;
  329                 }
  330 
  331                 addr = ed->bEndpointAddress;
  332                 dir = UE_GET_DIR(ed->bEndpointAddress);
  333                 attr = ed->bmAttributes & UE_XFERTYPE;
  334                 if (dir == UE_DIR_IN && attr == UE_BULK)
  335                         ucom->sc_bulkin_no = addr;
  336                 else if (dir == UE_DIR_OUT && attr == UE_BULK)
  337                         ucom->sc_bulkout_no = addr;
  338                 else {
  339                         device_printf(ucom->sc_dev, "unexpected endpoint\n");
  340                         goto bad;
  341                 }
  342         }
  343         if (ucom->sc_bulkin_no == -1) {
  344                 device_printf(ucom->sc_dev, "Could not find data bulk in\n");
  345                 goto bad;
  346         }
  347         if (ucom->sc_bulkout_no == -1) {
  348                 device_printf(ucom->sc_dev, "Could not find data bulk out\n");
  349                 goto bad;
  350         }
  351         ucom->sc_parent  = sc;
  352         if (uaa->iface == NULL)
  353                 ucom->sc_portno = FTDI_PIT_SIOA;
  354         else
  355                 ucom->sc_portno = FTDI_PIT_SIOA + id->bInterfaceNumber;
  356         /* bulkin, bulkout set above */
  357 
  358         ucom->sc_ibufsize = UFTDIIBUFSIZE;
  359         ucom->sc_obufsize = UFTDIOBUFSIZE - sc->sc_hdrlen;
  360         ucom->sc_ibufsizepad = UFTDIIBUFSIZE;
  361         ucom->sc_opkthdrlen = sc->sc_hdrlen;
  362 
  363 
  364         ucom->sc_callback = &uftdi_callback;
  365 #if 0
  366         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, ucom->sc_udev,
  367           ucom->sc_dev);
  368 #endif
  369         DPRINTF(("uftdi: in=0x%x out=0x%x\n", ucom->sc_bulkin_no, ucom->sc_bulkout_no));
  370         ucom_attach(&sc->sc_ucom);
  371         return 0;
  372 
  373 bad:
  374         DPRINTF(("uftdi_attach: ATTACH ERROR\n"));
  375         ucom->sc_dying = 1;
  376         return ENXIO;
  377 }
  378 #if 0
  379 int
  380 uftdi_activate(device_t self, enum devact act)
  381 {
  382         struct uftdi_softc *sc = (struct uftdi_softc *)self;
  383         int rv = 0;
  384 
  385         switch (act) {
  386         case DVACT_ACTIVATE:
  387                 return (EOPNOTSUPP);
  388 
  389         case DVACT_DEACTIVATE:
  390                 if (sc->sc_subdev != NULL)
  391                         rv = config_deactivate(sc->sc_subdev);
  392                 sc->sc_ucom.sc_dying = 1;
  393                 break;
  394         }
  395         return (rv);
  396 }
  397 #endif
  398 
  399 static int
  400 uftdi_detach(device_t self)
  401 {
  402         struct uftdi_softc *sc = device_get_softc(self);
  403 
  404         int rv = 0;
  405 
  406         DPRINTF(("uftdi_detach: sc=%p\n", sc));
  407         sc->sc_ucom.sc_dying = 1;
  408         rv = ucom_detach(&sc->sc_ucom);
  409 
  410         return rv;
  411 }
  412 
  413 static int
  414 uftdi_open(void *vsc, int portno)
  415 {
  416         struct uftdi_softc *sc = vsc;
  417         struct ucom_softc *ucom = &sc->sc_ucom;
  418         usb_device_request_t req;
  419         usbd_status err;
  420         struct termios t;
  421 
  422         DPRINTF(("uftdi_open: sc=%p\n", sc));
  423 
  424         if (ucom->sc_dying)
  425                 return (EIO);
  426 
  427         /* Perform a full reset on the device */
  428         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  429         req.bRequest = FTDI_SIO_RESET;
  430         USETW(req.wValue, FTDI_SIO_RESET_SIO);
  431         USETW(req.wIndex, portno);
  432         USETW(req.wLength, 0);
  433         err = usbd_do_request(ucom->sc_udev, &req, NULL);
  434         if (err)
  435                 return (EIO);
  436 
  437         /* Set 9600 baud, 2 stop bits, no parity, 8 bits */
  438         t.c_ospeed = 9600;
  439         t.c_cflag = CSTOPB | CS8;
  440         (void)uftdi_param(sc, portno, &t);
  441 
  442         /* Turn on RTS/CTS flow control */
  443         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  444         req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
  445         USETW(req.wValue, 0);
  446         USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, portno);
  447         USETW(req.wLength, 0);
  448         err = usbd_do_request(ucom->sc_udev, &req, NULL);
  449         if (err)
  450                 return (EIO);
  451 
  452         return (0);
  453 }
  454 
  455 static void
  456 uftdi_read(void *vsc, int portno, u_char **ptr, u_int32_t *count)
  457 {
  458         struct uftdi_softc *sc = vsc;
  459         u_char msr, lsr;
  460 
  461         DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n", sc, portno,
  462                      *count));
  463 
  464         msr = FTDI_GET_MSR(*ptr);
  465         lsr = FTDI_GET_LSR(*ptr);
  466 
  467 #ifdef USB_DEBUG
  468         if (*count != 2)
  469                 DPRINTFN(10,("uftdi_read: sc=%p, port=%d count=%d data[0]="
  470                             "0x%02x\n", sc, portno, *count, (*ptr)[2]));
  471 #endif
  472 
  473         if (sc->sc_msr != msr ||
  474             (sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK)) {
  475                 DPRINTF(("uftdi_read: status change msr=0x%02x(0x%02x) "
  476                          "lsr=0x%02x(0x%02x)\n", msr, sc->sc_msr,
  477                          lsr, sc->sc_lsr));
  478                 sc->sc_msr = msr;
  479                 sc->sc_lsr = lsr;
  480                 ucom_status_change(&sc->sc_ucom);
  481         }
  482 
  483         /* Pick up status and adjust data part. */
  484         *ptr += 2;
  485         *count -= 2;
  486 }
  487 
  488 static void
  489 uftdi_write(void *vsc, int portno, u_char *to, u_char *from, u_int32_t *count)
  490 {
  491         struct uftdi_softc *sc = vsc;
  492 
  493         DPRINTFN(10,("uftdi_write: sc=%p, port=%d count=%u data[0]=0x%02x\n",
  494                      vsc, portno, *count, from[0]));
  495 
  496         /* Make length tag and copy data */
  497         if (sc->sc_hdrlen > 0)
  498                 *to = FTDI_OUT_TAG(*count, portno);
  499 
  500         memcpy(to + sc->sc_hdrlen, from, *count);
  501         *count += sc->sc_hdrlen;
  502 }
  503 
  504 static void
  505 uftdi_set(void *vsc, int portno, int reg, int onoff)
  506 {
  507         struct uftdi_softc *sc = vsc;
  508         struct ucom_softc *ucom = vsc;
  509         usb_device_request_t req;
  510         int ctl;
  511 
  512         DPRINTF(("uftdi_set: sc=%p, port=%d reg=%d onoff=%d\n", vsc, portno,
  513                  reg, onoff));
  514 
  515         switch (reg) {
  516         case UCOM_SET_DTR:
  517                 ctl = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW;
  518                 break;
  519         case UCOM_SET_RTS:
  520                 ctl = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW;
  521                 break;
  522         case UCOM_SET_BREAK:
  523                 uftdi_break(sc, portno, onoff);
  524                 return;
  525         default:
  526                 return;
  527         }
  528         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  529         req.bRequest = FTDI_SIO_MODEM_CTRL;
  530         USETW(req.wValue, ctl);
  531         USETW(req.wIndex, portno);
  532         USETW(req.wLength, 0);
  533         DPRINTFN(2,("uftdi_set: reqtype=0x%02x req=0x%02x value=0x%04x "
  534                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
  535                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
  536         (void)usbd_do_request(ucom->sc_udev, &req, NULL);
  537 }
  538 
  539 static int
  540 uftdi_param(void *vsc, int portno, struct termios *t)
  541 {
  542         struct uftdi_softc *sc = vsc;
  543         struct ucom_softc *ucom = &sc->sc_ucom;
  544         usb_device_request_t req;
  545         usbd_status err;
  546         int rate=0, data, flow;
  547 
  548         DPRINTF(("uftdi_param: sc=%p\n", sc));
  549 
  550         if (ucom->sc_dying)
  551                 return (EIO);
  552 
  553         switch (sc->sc_type) {
  554         case UFTDI_TYPE_SIO:
  555                 switch (t->c_ospeed) {
  556                 case 300: rate = ftdi_sio_b300; break;
  557                 case 600: rate = ftdi_sio_b600; break;
  558                 case 1200: rate = ftdi_sio_b1200; break;
  559                 case 2400: rate = ftdi_sio_b2400; break;
  560                 case 4800: rate = ftdi_sio_b4800; break;
  561                 case 9600: rate = ftdi_sio_b9600; break;
  562                 case 19200: rate = ftdi_sio_b19200; break;
  563                 case 38400: rate = ftdi_sio_b38400; break;
  564                 case 57600: rate = ftdi_sio_b57600; break;
  565                 case 115200: rate = ftdi_sio_b115200; break;
  566                 default:
  567                         return (EINVAL);
  568                 }
  569                 break;
  570 
  571         case UFTDI_TYPE_8U232AM:
  572                 switch(t->c_ospeed) {
  573                 case 300: rate = ftdi_8u232am_b300; break;
  574                 case 600: rate = ftdi_8u232am_b600; break;
  575                 case 1200: rate = ftdi_8u232am_b1200; break;
  576                 case 2400: rate = ftdi_8u232am_b2400; break;
  577                 case 4800: rate = ftdi_8u232am_b4800; break;
  578                 case 9600: rate = ftdi_8u232am_b9600; break;
  579                 case 19200: rate = ftdi_8u232am_b19200; break;
  580                 case 38400: rate = ftdi_8u232am_b38400; break;
  581                 case 57600: rate = ftdi_8u232am_b57600; break;
  582                 case 115200: rate = ftdi_8u232am_b115200; break;
  583                 case 230400: rate = ftdi_8u232am_b230400; break;
  584                 case 460800: rate = ftdi_8u232am_b460800; break;
  585                 case 921600: rate = ftdi_8u232am_b921600; break;
  586                 case 2000000: rate = ftdi_8u232am_b2000000; break;
  587                 case 3000000: rate = ftdi_8u232am_b3000000; break;
  588                 default:
  589                         return (EINVAL);
  590                 }
  591                 break;
  592         }
  593         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  594         req.bRequest = FTDI_SIO_SET_BAUD_RATE;
  595         USETW(req.wValue, rate);
  596         USETW(req.wIndex, portno);
  597         USETW(req.wLength, 0);
  598         DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
  599                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
  600                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
  601         err = usbd_do_request(ucom->sc_udev, &req, NULL);
  602         if (err)
  603                 return (EIO);
  604 
  605         if (ISSET(t->c_cflag, CSTOPB))
  606                 data = FTDI_SIO_SET_DATA_STOP_BITS_2;
  607         else
  608                 data = FTDI_SIO_SET_DATA_STOP_BITS_1;
  609         if (ISSET(t->c_cflag, PARENB)) {
  610                 if (ISSET(t->c_cflag, PARODD))
  611                         data |= FTDI_SIO_SET_DATA_PARITY_ODD;
  612                 else
  613                         data |= FTDI_SIO_SET_DATA_PARITY_EVEN;
  614         } else
  615                 data |= FTDI_SIO_SET_DATA_PARITY_NONE;
  616         switch (ISSET(t->c_cflag, CSIZE)) {
  617         case CS5:
  618                 data |= FTDI_SIO_SET_DATA_BITS(5);
  619                 break;
  620         case CS6:
  621                 data |= FTDI_SIO_SET_DATA_BITS(6);
  622                 break;
  623         case CS7:
  624                 data |= FTDI_SIO_SET_DATA_BITS(7);
  625                 break;
  626         case CS8:
  627                 data |= FTDI_SIO_SET_DATA_BITS(8);
  628                 break;
  629         }
  630         sc->last_lcr = data;
  631 
  632         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  633         req.bRequest = FTDI_SIO_SET_DATA;
  634         USETW(req.wValue, data);
  635         USETW(req.wIndex, portno);
  636         USETW(req.wLength, 0);
  637         DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
  638                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
  639                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
  640         err = usbd_do_request(ucom->sc_udev, &req, NULL);
  641         if (err)
  642                 return (EIO);
  643 
  644         if (ISSET(t->c_cflag, CRTSCTS)) {
  645                 flow = FTDI_SIO_RTS_CTS_HS;
  646                 USETW(req.wValue, 0);
  647         } else if (ISSET(t->c_iflag, IXON|IXOFF)) {
  648                 flow = FTDI_SIO_XON_XOFF_HS;
  649                 USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]);
  650         } else {
  651                 flow = FTDI_SIO_DISABLE_FLOW_CTRL;
  652                 USETW(req.wValue, 0);
  653         }
  654         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  655         req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
  656         USETW2(req.wIndex, flow, portno);
  657         USETW(req.wLength, 0);
  658         err = usbd_do_request(ucom->sc_udev, &req, NULL);
  659         if (err)
  660                 return (EIO);
  661 
  662         return (0);
  663 }
  664 
  665 void
  666 uftdi_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
  667 {
  668         struct uftdi_softc *sc = vsc;
  669 
  670         DPRINTF(("uftdi_status: msr=0x%02x lsr=0x%02x\n",
  671                  sc->sc_msr, sc->sc_lsr));
  672 
  673         if (msr != NULL)
  674                 *msr = sc->sc_msr;
  675         if (lsr != NULL)
  676                 *lsr = sc->sc_lsr;
  677 }
  678 
  679 void
  680 uftdi_break(void *vsc, int portno, int onoff)
  681 {
  682         struct uftdi_softc *sc = vsc;
  683         struct ucom_softc *ucom = vsc;
  684 
  685         usb_device_request_t req;
  686         int data;
  687 
  688         DPRINTF(("uftdi_break: sc=%p, port=%d onoff=%d\n", vsc, portno,
  689                   onoff));
  690 
  691         if (onoff) {
  692                 data = sc->last_lcr | FTDI_SIO_SET_BREAK;
  693         } else {
  694                 data = sc->last_lcr;
  695         }
  696 
  697         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  698         req.bRequest = FTDI_SIO_SET_DATA;
  699         USETW(req.wValue, data);
  700         USETW(req.wIndex, portno);
  701         USETW(req.wLength, 0);
  702         (void)usbd_do_request(ucom->sc_udev, &req, NULL);
  703 }
  704 
  705 static device_method_t uftdi_methods[] = {
  706         /* Device interface */
  707         DEVMETHOD(device_probe, uftdi_match),
  708         DEVMETHOD(device_attach, uftdi_attach),
  709         DEVMETHOD(device_detach, uftdi_detach),
  710 
  711         { 0, 0 }
  712 };
  713 
  714 static driver_t uftdi_driver = {
  715         "ucom",
  716         uftdi_methods,
  717         sizeof (struct uftdi_softc)
  718 };
  719 
  720 DRIVER_MODULE(uftdi, uhub, uftdi_driver, ucom_devclass, usbd_driver_load, 0);
  721 MODULE_DEPEND(uftdi, usb, 1, 1, 1);
  722 MODULE_DEPEND(uftdi, ucom,UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);

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