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

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    1 /*      $NetBSD: ubsa.c,v 1.8 2004/01/05 13:28:18 augustss Exp $        */
    2 /*-
    3  * Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>.
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 /*
   28  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   29  * All rights reserved.
   30  *
   31  * This code is derived from software contributed to The NetBSD Foundation
   32  * by Ichiro FUKUHARA (ichiro@ichiro.org).
   33  *
   34  * Redistribution and use in source and binary forms, with or without
   35  * modification, are permitted provided that the following conditions
   36  * are met:
   37  * 1. Redistributions of source code must retain the above copyright
   38  *    notice, this list of conditions and the following disclaimer.
   39  * 2. Redistributions in binary form must reproduce the above copyright
   40  *    notice, this list of conditions and the following disclaimer in the
   41  *    documentation and/or other materials provided with the distribution.
   42  * 3. All advertising materials mentioning features or use of this software
   43  *    must display the following acknowledgement:
   44  *        This product includes software developed by the NetBSD
   45  *        Foundation, Inc. and its contributors.
   46  * 4. Neither the name of The NetBSD Foundation nor the names of its
   47  *    contributors may be used to endorse or promote products derived
   48  *    from this software without specific prior written permission.
   49  *
   50  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   51  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   52  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   53  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   54  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   55  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   56  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   57  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   58  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   59  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   60  * POSSIBILITY OF SUCH DAMAGE.
   61  */
   62 
   63 #include <sys/cdefs.h>
   64 __KERNEL_RCSID(0, "$NetBSD: ubsa.c,v 1.8 2004/01/05 13:28:18 augustss Exp $");
   65 
   66 #include <sys/param.h>
   67 #include <sys/systm.h>
   68 #include <sys/kernel.h>
   69 #include <sys/malloc.h>
   70 #ifdef __FreeBSD__
   71 #include <sys/bus.h>
   72 #endif
   73 #include <sys/ioccom.h>
   74 #include <sys/fcntl.h>
   75 #include <sys/conf.h>
   76 #include <sys/tty.h>
   77 #include <sys/file.h>
   78 #if __FreeBSD_version >= 500014
   79 #include <sys/selinfo.h>
   80 #else
   81 #include <sys/select.h>
   82 #endif
   83 #include <sys/proc.h>
   84 #include <sys/device.h>
   85 #include <sys/poll.h>
   86 #include <sys/sysctl.h>
   87 
   88 #include <dev/usb/usb.h>
   89 #include <dev/usb/usbcdc.h>
   90 
   91 #include <dev/usb/usbdi.h>
   92 #include <dev/usb/usbdi_util.h>
   93 #include <dev/usb/usbdevs.h>
   94 #include <dev/usb/usb_quirks.h>
   95 
   96 #include <dev/usb/ucomvar.h>
   97 
   98 #ifdef UBSA_DEBUG
   99 Static int      ubsadebug = 0;
  100 #ifdef __FreeBSD__
  101 SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
  102 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
  103            &ubsadebug, 0, "ubsa debug level");
  104 #endif
  105 
  106 #define DPRINTFN(n, x)  do { \
  107                                 if (ubsadebug > (n)) \
  108                                         logprintf x; \
  109                         } while (0)
  110 #else
  111 #define DPRINTFN(n, x)
  112 #endif
  113 #define DPRINTF(x) DPRINTFN(0, x)
  114 
  115 #define UBSA_MODVER             1       /* module version */
  116 
  117 #define UBSA_CONFIG_INDEX       1
  118 #define UBSA_IFACE_INDEX        0
  119 
  120 #define UBSA_INTR_INTERVAL      100     /* ms */
  121 
  122 #define UBSA_SET_BAUDRATE       0x00
  123 #define UBSA_SET_STOP_BITS      0x01
  124 #define UBSA_SET_DATA_BITS      0x02
  125 #define UBSA_SET_PARITY         0x03
  126 #define UBSA_SET_DTR            0x0A
  127 #define UBSA_SET_RTS            0x0B
  128 #define UBSA_SET_BREAK          0x0C
  129 #define UBSA_SET_FLOW_CTRL      0x10
  130 
  131 #define UBSA_PARITY_NONE        0x00
  132 #define UBSA_PARITY_EVEN        0x01
  133 #define UBSA_PARITY_ODD         0x02
  134 #define UBSA_PARITY_MARK        0x03
  135 #define UBSA_PARITY_SPACE       0x04
  136 
  137 #define UBSA_FLOW_NONE          0x0000
  138 #define UBSA_FLOW_OCTS          0x0001
  139 #define UBSA_FLOW_ODSR          0x0002
  140 #define UBSA_FLOW_IDSR          0x0004
  141 #define UBSA_FLOW_IDTR          0x0008
  142 #define UBSA_FLOW_IRTS          0x0010
  143 #define UBSA_FLOW_ORTS          0x0020
  144 #define UBSA_FLOW_UNKNOWN       0x0040
  145 #define UBSA_FLOW_OXON          0x0080
  146 #define UBSA_FLOW_IXON          0x0100
  147 
  148 /* line status register */
  149 #define UBSA_LSR_TSRE           0x40    /* Transmitter empty: byte sent */
  150 #define UBSA_LSR_TXRDY          0x20    /* Transmitter buffer empty */
  151 #define UBSA_LSR_BI             0x10    /* Break detected */
  152 #define UBSA_LSR_FE             0x08    /* Framing error: bad stop bit */
  153 #define UBSA_LSR_PE             0x04    /* Parity error */
  154 #define UBSA_LSR_OE             0x02    /* Overrun, lost incoming byte */
  155 #define UBSA_LSR_RXRDY          0x01    /* Byte ready in Receive Buffer */
  156 #define UBSA_LSR_RCV_MASK       0x1f    /* Mask for incoming data or error */
  157 
  158 /* modem status register */
  159 /* All deltas are from the last read of the MSR. */
  160 #define UBSA_MSR_DCD            0x80    /* Current Data Carrier Detect */
  161 #define UBSA_MSR_RI             0x40    /* Current Ring Indicator */
  162 #define UBSA_MSR_DSR            0x20    /* Current Data Set Ready */
  163 #define UBSA_MSR_CTS            0x10    /* Current Clear to Send */
  164 #define UBSA_MSR_DDCD           0x08    /* DCD has changed state */
  165 #define UBSA_MSR_TERI           0x04    /* RI has toggled low to high */
  166 #define UBSA_MSR_DDSR           0x02    /* DSR has changed state */
  167 #define UBSA_MSR_DCTS           0x01    /* CTS has changed state */
  168 
  169 struct  ubsa_softc {
  170         USBBASEDEVICE           sc_dev;         /* base device */
  171         usbd_device_handle      sc_udev;        /* USB device */
  172         usbd_interface_handle   sc_iface;       /* interface */
  173 
  174         int                     sc_iface_number;        /* interface number */
  175 
  176         usbd_interface_handle   sc_intr_iface;  /* interrupt interface */
  177         int                     sc_intr_number; /* interrupt number */
  178         usbd_pipe_handle        sc_intr_pipe;   /* interrupt pipe */
  179         u_char                  *sc_intr_buf;   /* interrupt buffer */
  180         int                     sc_isize;
  181 
  182         u_char                  sc_dtr;         /* current DTR state */
  183         u_char                  sc_rts;         /* current RTS state */
  184 
  185         u_char                  sc_lsr;         /* Local status register */
  186         u_char                  sc_msr;         /* ubsa status register */
  187 
  188         device_ptr_t            sc_subdev;      /* ucom device */
  189 
  190         u_char                  sc_dying;       /* disconnecting */
  191 
  192 };
  193 
  194 Static  void ubsa_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
  195 
  196 Static  void ubsa_get_status(void *, int, u_char *, u_char *);
  197 Static  void ubsa_set(void *, int, int, int);
  198 Static  int  ubsa_param(void *, int, struct termios *);
  199 Static  int  ubsa_open(void *, int);
  200 Static  void ubsa_close(void *, int);
  201 
  202 Static  void ubsa_break(struct ubsa_softc *sc, int onoff);
  203 Static  int  ubsa_request(struct ubsa_softc *, u_int8_t, u_int16_t);
  204 Static  void ubsa_dtr(struct ubsa_softc *, int);
  205 Static  void ubsa_rts(struct ubsa_softc *, int);
  206 Static  void ubsa_baudrate(struct ubsa_softc *, speed_t);
  207 Static  void ubsa_parity(struct ubsa_softc *, tcflag_t);
  208 Static  void ubsa_databits(struct ubsa_softc *, tcflag_t);
  209 Static  void ubsa_stopbits(struct ubsa_softc *, tcflag_t);
  210 Static  void ubsa_flow(struct ubsa_softc *, tcflag_t, tcflag_t);
  211 
  212 struct  ucom_methods ubsa_methods = {
  213         ubsa_get_status,
  214         ubsa_set,
  215         ubsa_param,
  216         NULL,
  217         ubsa_open,
  218         ubsa_close,
  219         NULL,
  220         NULL
  221 };
  222 
  223 Static const struct usb_devno ubsa_devs[] = {
  224         /* BELKIN F5U103 */
  225         { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103 },
  226         /* BELKIN F5U120 */
  227         { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120 },
  228         /* GoHubs GO-COM232 */
  229         { USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM },
  230         /* GoHubs GO-COM232 */
  231         { USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232 },
  232         /* Peracom */
  233         { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1 },
  234 };
  235 #define ubsa_lookup(v, p) usb_lookup(ubsa_devs, v, p)
  236 
  237 USB_DECLARE_DRIVER(ubsa);
  238 
  239 USB_MATCH(ubsa)
  240 {
  241         USB_MATCH_START(ubsa, uaa);
  242 
  243         if (uaa->iface != NULL)
  244                 return (UMATCH_NONE);
  245 
  246         return (ubsa_lookup(uaa->vendor, uaa->product) != NULL ?
  247                 UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
  248 }
  249 
  250 USB_ATTACH(ubsa)
  251 {
  252         USB_ATTACH_START(ubsa, sc, uaa);
  253         usbd_device_handle dev = uaa->device;
  254         usb_config_descriptor_t *cdesc;
  255         usb_interface_descriptor_t *id;
  256         usb_endpoint_descriptor_t *ed;
  257         char devinfo[1024];
  258         const char *devname = USBDEVNAME(sc->sc_dev);
  259         usbd_status err;
  260         struct ucom_attach_args uca;
  261         int i;
  262 
  263         usbd_devinfo(dev, 0, devinfo);
  264         USB_ATTACH_SETUP;
  265         printf("%s: %s\n", devname, devinfo);
  266 
  267         sc->sc_udev = dev;
  268 
  269         /*
  270          * initialize rts, dtr variables to something
  271          * different from boolean 0, 1
  272          */
  273         sc->sc_dtr = -1;
  274         sc->sc_rts = -1;
  275 
  276         printf("%s: %s\n", devname, devinfo);
  277 
  278         DPRINTF(("ubsa attach: sc = %p\n", sc));
  279 
  280         /* initialize endpoints */
  281         uca.bulkin = uca.bulkout = -1;
  282         sc->sc_intr_number = -1;
  283         sc->sc_intr_pipe = NULL;
  284 
  285         /* Move the device into the configured state. */
  286         err = usbd_set_config_index(dev, UBSA_CONFIG_INDEX, 1);
  287         if (err) {
  288                 printf("%s: failed to set configuration: %s\n",
  289                     devname, usbd_errstr(err));
  290                 sc->sc_dying = 1;
  291                 goto error;
  292         }
  293 
  294         /* get the config descriptor */
  295         cdesc = usbd_get_config_descriptor(sc->sc_udev);
  296 
  297         if (cdesc == NULL) {
  298                 printf("%s: failed to get configuration descriptor\n",
  299                     devname);
  300                 sc->sc_dying = 1;
  301                 goto error;
  302         }
  303 
  304         /* get the first interface */
  305         err = usbd_device2interface_handle(dev, UBSA_IFACE_INDEX,
  306             &sc->sc_iface);
  307         if (err) {
  308                 printf("%s: failed to get interface: %s\n",
  309                         devname, usbd_errstr(err));
  310                 sc->sc_dying = 1;
  311                 goto error;
  312         }
  313 
  314         /* Find the endpoints */
  315 
  316         id = usbd_get_interface_descriptor(sc->sc_iface);
  317         sc->sc_iface_number = id->bInterfaceNumber;
  318 
  319         for (i = 0; i < id->bNumEndpoints; i++) {
  320                 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
  321                 if (ed == NULL) {
  322                         printf("%s: no endpoint descriptor for %d\n",
  323                             USBDEVNAME(sc->sc_dev), i);
  324                         sc->sc_dying = 1;
  325                         goto error;
  326                 }
  327 
  328                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  329                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
  330                         sc->sc_intr_number = ed->bEndpointAddress;
  331                         sc->sc_isize = UGETW(ed->wMaxPacketSize);
  332                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  333                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
  334                         uca.bulkin = ed->bEndpointAddress;
  335                         uca.ibufsize = UGETW(ed->wMaxPacketSize);
  336                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
  337                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
  338                         uca.bulkout = ed->bEndpointAddress;
  339                         uca.obufsize = UGETW(ed->wMaxPacketSize);
  340                 }
  341         }
  342 
  343         if (sc->sc_intr_number == -1) {
  344                 printf("%s: Could not find interrupt in\n", devname);
  345                 sc->sc_dying = 1;
  346                 goto error;
  347         }
  348 
  349         if (uca.bulkin == -1) {
  350                 printf("%s: Could not find data bulk in\n", devname);
  351                 sc->sc_dying = 1;
  352                 goto error;
  353         }
  354 
  355         if (uca.bulkout == -1) {
  356                 printf("%s: Could not find data bulk out\n", devname);
  357                 sc->sc_dying = 1;
  358                 goto error;
  359         }
  360 
  361         uca.portno = UCOM_UNK_PORTNO;
  362         /* bulkin, bulkout set above */
  363         uca.ibufsizepad = uca.ibufsize;
  364         uca.opkthdrlen = 0;
  365         uca.device = dev;
  366         uca.iface = sc->sc_iface;
  367         uca.methods = &ubsa_methods;
  368         uca.arg = sc;
  369         uca.info = NULL;
  370 
  371         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
  372                            USBDEV(sc->sc_dev));
  373 
  374         DPRINTF(("ubsa: in = 0x%x, out = 0x%x, intr = 0x%x\n",
  375             uca.bulkin_no, uca.bulkout_no, sc->sc_intr_number));
  376 
  377         sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
  378 
  379         USB_ATTACH_SUCCESS_RETURN;
  380 
  381 error:
  382         USB_ATTACH_ERROR_RETURN;
  383 }
  384 
  385 USB_DETACH(ubsa)
  386 {
  387         USB_DETACH_START(ubsa, sc);
  388         int rv = 0;
  389 
  390 
  391         DPRINTF(("ubsa_detach: sc = %p\n", sc));
  392 
  393         if (sc->sc_intr_pipe != NULL) {
  394                 usbd_abort_pipe(sc->sc_intr_pipe);
  395                 usbd_close_pipe(sc->sc_intr_pipe);
  396                 free(sc->sc_intr_buf, M_USBDEV);
  397                 sc->sc_intr_pipe = NULL;
  398         }
  399 
  400         sc->sc_dying = 1;
  401         if (sc->sc_subdev != NULL) {
  402                 rv = config_detach(sc->sc_subdev, flags);
  403                 sc->sc_subdev = NULL;
  404         }
  405 
  406         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
  407                            USBDEV(sc->sc_dev));
  408 
  409         return (rv);
  410 }
  411 
  412 int
  413 ubsa_activate(device_ptr_t self, enum devact act)
  414 {
  415         struct ubsa_softc *sc = (struct ubsa_softc *)self;
  416         int rv = 0;
  417 
  418         switch (act) {
  419         case DVACT_ACTIVATE:
  420                 return (EOPNOTSUPP);
  421 
  422         case DVACT_DEACTIVATE:
  423                 if (sc->sc_subdev != NULL)
  424                         rv = config_deactivate(sc->sc_subdev);
  425                 sc->sc_dying = 1;
  426                 break;
  427         }
  428         return (rv);
  429 }
  430 
  431 Static int
  432 ubsa_request(struct ubsa_softc *sc, u_int8_t request, u_int16_t value)
  433 {
  434         usb_device_request_t req;
  435         usbd_status err;
  436 
  437         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  438         req.bRequest = request;
  439         USETW(req.wValue, value);
  440         USETW(req.wIndex, sc->sc_iface_number);
  441         USETW(req.wLength, 0);
  442 
  443         err = usbd_do_request(sc->sc_udev, &req, 0);
  444         if (err)
  445                 printf("%s: ubsa_request: %s\n",
  446                     USBDEVNAME(sc->sc_dev), usbd_errstr(err));
  447         return (err);
  448 }
  449 
  450 Static void
  451 ubsa_dtr(struct ubsa_softc *sc, int onoff)
  452 {
  453 
  454         DPRINTF(("ubsa_dtr: onoff = %d\n", onoff));
  455 
  456         if (sc->sc_dtr == onoff)
  457                 return;
  458         sc->sc_dtr = onoff;
  459 
  460         ubsa_request(sc, UBSA_SET_DTR, onoff ? 1 : 0);
  461 }
  462 
  463 Static void
  464 ubsa_rts(struct ubsa_softc *sc, int onoff)
  465 {
  466 
  467         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
  468 
  469         if (sc->sc_rts == onoff)
  470                 return;
  471         sc->sc_rts = onoff;
  472 
  473         ubsa_request(sc, UBSA_SET_RTS, onoff ? 1 : 0);
  474 }
  475 
  476 Static void
  477 ubsa_break(struct ubsa_softc *sc, int onoff)
  478 {
  479 
  480         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
  481 
  482         ubsa_request(sc, UBSA_SET_BREAK, onoff ? 1 : 0);
  483 }
  484 
  485 Static void
  486 ubsa_set(void *addr, int portno, int reg, int onoff)
  487 {
  488         struct ubsa_softc *sc;
  489 
  490         sc = addr;
  491         switch (reg) {
  492         case UCOM_SET_DTR:
  493                 ubsa_dtr(sc, onoff);
  494                 break;
  495         case UCOM_SET_RTS:
  496                 ubsa_rts(sc, onoff);
  497                 break;
  498         case UCOM_SET_BREAK:
  499                 ubsa_break(sc, onoff);
  500                 break;
  501         default:
  502                 break;
  503         }
  504 }
  505 
  506 Static void
  507 ubsa_baudrate(struct ubsa_softc *sc, speed_t speed)
  508 {
  509         u_int16_t value = 0;
  510 
  511         DPRINTF(("ubsa_baudrate: speed = %d\n", speed));
  512 
  513         switch(speed) {
  514         case B0:
  515                 break;
  516         case B300:
  517         case B600:
  518         case B1200:
  519         case B2400:
  520         case B4800:
  521         case B9600:
  522         case B19200:
  523         case B38400:
  524         case B57600:
  525         case B115200:
  526         case B230400:
  527                 value = B230400 / speed;
  528                 break;
  529         default:
  530                 printf("%s: ubsa_param: unsupported baudrate, "
  531                     "forcing default of 9600\n",
  532                     USBDEVNAME(sc->sc_dev));
  533                 value = B230400 / B9600;
  534                 break;
  535         };
  536 
  537         if (speed == B0) {
  538                 ubsa_flow(sc, 0, 0);
  539                 ubsa_dtr(sc, 0);
  540                 ubsa_rts(sc, 0);
  541         } else
  542                 ubsa_request(sc, UBSA_SET_BAUDRATE, value);
  543 }
  544 
  545 Static void
  546 ubsa_parity(struct ubsa_softc *sc, tcflag_t cflag)
  547 {
  548         int value;
  549 
  550         DPRINTF(("ubsa_parity: cflag = 0x%x\n", cflag));
  551 
  552         if (cflag & PARENB)
  553                 value = (cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
  554         else
  555                 value = UBSA_PARITY_NONE;
  556 
  557         ubsa_request(sc, UBSA_SET_PARITY, value);
  558 }
  559 
  560 Static void
  561 ubsa_databits(struct ubsa_softc *sc, tcflag_t cflag)
  562 {
  563         int value;
  564 
  565         DPRINTF(("ubsa_databits: cflag = 0x%x\n", cflag));
  566 
  567         switch (cflag & CSIZE) {
  568         case CS5: value = 0; break;
  569         case CS6: value = 1; break;
  570         case CS7: value = 2; break;
  571         case CS8: value = 3; break;
  572         default:
  573                 printf("%s: ubsa_param: unsupported databits requested, "
  574                     "forcing default of 8\n",
  575                     USBDEVNAME(sc->sc_dev));
  576                 value = 3;
  577         }
  578 
  579         ubsa_request(sc, UBSA_SET_DATA_BITS, value);
  580 }
  581 
  582 Static void
  583 ubsa_stopbits(struct ubsa_softc *sc, tcflag_t cflag)
  584 {
  585         int value;
  586 
  587         DPRINTF(("ubsa_stopbits: cflag = 0x%x\n", cflag));
  588 
  589         value = (cflag & CSTOPB) ? 1 : 0;
  590 
  591         ubsa_request(sc, UBSA_SET_STOP_BITS, value);
  592 }
  593 
  594 Static void
  595 ubsa_flow(struct ubsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
  596 {
  597         int value;
  598 
  599         DPRINTF(("ubsa_flow: cflag = 0x%x, iflag = 0x%x\n", cflag, iflag));
  600 
  601         value = 0;
  602         if (cflag & CRTSCTS)
  603                 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
  604         if (iflag & (IXON|IXOFF))
  605                 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
  606 
  607         ubsa_request(sc, UBSA_SET_FLOW_CTRL, value);
  608 }
  609 
  610 Static int
  611 ubsa_param(void *addr, int portno, struct termios *ti)
  612 {
  613         struct ubsa_softc *sc = addr;
  614 
  615         DPRINTF(("ubsa_param: sc = %p\n", sc));
  616 
  617         ubsa_baudrate(sc, ti->c_ospeed);
  618         ubsa_parity(sc, ti->c_cflag);
  619         ubsa_databits(sc, ti->c_cflag);
  620         ubsa_stopbits(sc, ti->c_cflag);
  621         ubsa_flow(sc, ti->c_cflag, ti->c_iflag);
  622 
  623         return (0);
  624 }
  625 
  626 Static int
  627 ubsa_open(void *addr, int portno)
  628 {
  629         struct ubsa_softc *sc = addr;
  630         int err;
  631 
  632         if (sc->sc_dying)
  633                 return (ENXIO);
  634 
  635         DPRINTF(("ubsa_open: sc = %p\n", sc));
  636 
  637         if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) {
  638                 sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
  639                 err = usbd_open_pipe_intr(sc->sc_intr_iface,
  640                     sc->sc_intr_number,
  641                     USBD_SHORT_XFER_OK,
  642                     &sc->sc_intr_pipe,
  643                     sc,
  644                     sc->sc_intr_buf,
  645                     sc->sc_isize,
  646                     ubsa_intr,
  647                     UBSA_INTR_INTERVAL);
  648                 if (err) {
  649                         printf("%s: cannot open interrupt pipe (addr %d)\n",
  650                             USBDEVNAME(sc->sc_dev),
  651                             sc->sc_intr_number);
  652                         return (EIO);
  653                 }
  654         }
  655 
  656         return (0);
  657 }
  658 
  659 Static void
  660 ubsa_close(void *addr, int portno)
  661 {
  662         struct ubsa_softc *sc = addr;
  663         int err;
  664 
  665         if (sc->sc_dying)
  666                 return;
  667 
  668         DPRINTF(("ubsa_close: close\n"));
  669 
  670         if (sc->sc_intr_pipe != NULL) {
  671                 err = usbd_abort_pipe(sc->sc_intr_pipe);
  672                 if (err)
  673                         printf("%s: abort interrupt pipe failed: %s\n",
  674                             USBDEVNAME(sc->sc_dev),
  675                             usbd_errstr(err));
  676                 err = usbd_close_pipe(sc->sc_intr_pipe);
  677                 if (err)
  678                         printf("%s: close interrupt pipe failed: %s\n",
  679                             USBDEVNAME(sc->sc_dev),
  680                             usbd_errstr(err));
  681                 free(sc->sc_intr_buf, M_USBDEV);
  682                 sc->sc_intr_pipe = NULL;
  683         }
  684 }
  685 
  686 Static void
  687 ubsa_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  688 {
  689         struct ubsa_softc *sc = priv;
  690         u_char *buf;
  691 
  692         buf = sc->sc_intr_buf;
  693         if (sc->sc_dying)
  694                 return;
  695 
  696         if (status != USBD_NORMAL_COMPLETION) {
  697                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
  698                         return;
  699 
  700                 DPRINTF(("%s: ubsa_intr: abnormal status: %s\n",
  701                     USBDEVNAME(sc->sc_ucom.sc_dev),
  702                     usbd_errstr(status)));
  703                 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
  704                 return;
  705         }
  706 
  707         /* incidentally, Belkin adapter status bits match UART 16550 bits */
  708         sc->sc_lsr = buf[2];
  709         sc->sc_msr = buf[3];
  710 
  711         DPRINTF(("%s: ubsa lsr = 0x%02x, msr = 0x%02x\n",
  712             USBDEVNAME(sc->sc_ucom.sc_dev), sc->sc_lsr, sc->sc_msr));
  713 
  714         ucom_status_change((struct ucom_softc *)sc->sc_subdev);
  715 }
  716 
  717 Static void
  718 ubsa_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
  719 {
  720         struct ubsa_softc *sc = addr;
  721 
  722         DPRINTF(("ubsa_get_status\n"));
  723 
  724         if (lsr != NULL)
  725                 *lsr = sc->sc_lsr;
  726         if (msr != NULL)
  727                 *msr = sc->sc_msr;
  728 }

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