sys/dev/usbmisc/ubsa/ubsa.c

   1 /*-
   2  * Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  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  * $FreeBSD: src/sys/dev/usb/ubsa.c,v 1.11 2003/11/16 12:13:39 akiyama Exp $
  63  * $DragonFly: src/sys/dev/usbmisc/ubsa/ubsa.c,v 1.19 2007/11/06 07:37:01 hasso Exp $
  64  */
  65
  66 #include <sys/param.h>
  67 #include <sys/systm.h>
  68 #include <sys/kernel.h>
  69 #include <sys/malloc.h>
  70 #include <sys/bus.h>
  71 #include <sys/ioccom.h>
  72 #include <sys/fcntl.h>
  73 #include <sys/interrupt.h>
  74 #include <sys/conf.h>
  75 #include <sys/tty.h>
  76 #include <sys/file.h>
  77 #include <sys/select.h>
  78 #include <sys/proc.h>
  79 #include <sys/poll.h>
  80 #include <sys/sysctl.h>
  81
  82 #include <bus/usb/usb.h>
  83 #include <bus/usb/usbcdc.h>
  84
  85 #include <bus/usb/usbdi.h>
  86 #include <bus/usb/usbdi_util.h>
  87 #include <bus/usb/usb_quirks.h>
  88
  89 #include "../ucom/ucomvar.h"
  90
  91 #ifdef USB_DEBUG
  92 static int      ubsadebug = 0;
  93 SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
  94 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
  95            &ubsadebug, 0, "ubsa debug level");
  96
  97 #define DPRINTFN(n, x)  do { \
  98                                 if (ubsadebug > (n)) \
  99                                         kprintf x; \
 100                         } while (0)
 101 #else
 102 #define DPRINTFN(n, x)
 103 #endif
 104 #define DPRINTF(x) DPRINTFN(0, x)
 105
 106 #define UBSA_MODVER             1       /* module version */
 107
 108 #define UBSA_CONFIG_INDEX       1
 109 #define UBSA_IFACE_INDEX        0
 110
 111 #define UBSA_INTR_INTERVAL      100     /* ms */
 112
 113 #define UBSA_SET_BAUDRATE       0x00
 114 #define UBSA_SET_STOP_BITS      0x01
 115 #define UBSA_SET_DATA_BITS      0x02
 116 #define UBSA_SET_PARITY         0x03
 117 #define UBSA_SET_DTR            0x0A
 118 #define UBSA_SET_RTS            0x0B
 119 #define UBSA_SET_BREAK          0x0C
 120 #define UBSA_SET_FLOW_CTRL      0x10
 121
 122 #define UBSA_PARITY_NONE        0x00
 123 #define UBSA_PARITY_EVEN        0x01
 124 #define UBSA_PARITY_ODD         0x02
 125 #define UBSA_PARITY_MARK        0x03
 126 #define UBSA_PARITY_SPACE       0x04
 127
 128 #define UBSA_FLOW_NONE          0x0000
 129 #define UBSA_FLOW_OCTS          0x0001
 130 #define UBSA_FLOW_ODSR          0x0002
 131 #define UBSA_FLOW_IDSR          0x0004
 132 #define UBSA_FLOW_IDTR          0x0008
 133 #define UBSA_FLOW_IRTS          0x0010
 134 #define UBSA_FLOW_ORTS          0x0020
 135 #define UBSA_FLOW_UNKNOWN       0x0040
 136 #define UBSA_FLOW_OXON          0x0080
 137 #define UBSA_FLOW_IXON          0x0100
 138
 139 /* line status register */
 140 #define UBSA_LSR_TSRE           0x40    /* Transmitter empty: byte sent */
 141 #define UBSA_LSR_TXRDY          0x20    /* Transmitter buffer empty */
 142 #define UBSA_LSR_BI             0x10    /* Break detected */
 143 #define UBSA_LSR_FE             0x08    /* Framing error: bad stop bit */
 144 #define UBSA_LSR_PE             0x04    /* Parity error */
 145 #define UBSA_LSR_OE             0x02    /* Overrun, lost incoming byte */
 146 #define UBSA_LSR_RXRDY          0x01    /* Byte ready in Receive Buffer */
 147 #define UBSA_LSR_RCV_MASK       0x1f    /* Mask for incoming data or error */
 148
 149 /* modem status register */
 150 /* All deltas are from the last read of the MSR. */
 151 #define UBSA_MSR_DCD            0x80    /* Current Data Carrier Detect */
 152 #define UBSA_MSR_RI             0x40    /* Current Ring Indicator */
 153 #define UBSA_MSR_DSR            0x20    /* Current Data Set Ready */
 154 #define UBSA_MSR_CTS            0x10    /* Current Clear to Send */
 155 #define UBSA_MSR_DDCD           0x08    /* DCD has changed state */
 156 #define UBSA_MSR_TERI           0x04    /* RI has toggled low to high */
 157 #define UBSA_MSR_DDSR           0x02    /* DSR has changed state */
 158 #define UBSA_MSR_DCTS           0x01    /* CTS has changed state */
 159
 160 struct  ubsa_softc {
 161         struct ucom_softc       sc_ucom;
 162
 163         int                     sc_iface_number;        /* interface number */
 164
 165         usbd_interface_handle   sc_intr_iface;  /* interrupt interface */
 166         int                     sc_intr_number; /* interrupt number */
 167         usbd_pipe_handle        sc_intr_pipe;   /* interrupt pipe */
 168         u_char                  *sc_intr_buf;   /* interrupt buffer */
 169         int                     sc_isize;
 170
 171         u_char                  sc_dtr;         /* current DTR state */
 172         u_char                  sc_rts;         /* current RTS state */
 173
 174         u_char                  sc_lsr;         /* Local status register */
 175         u_char                  sc_msr;         /* ubsa status register */
 176 };
 177
 178 static  void ubsa_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
 179 static  void ubsa_notify(void *);
 180
 181 static  void ubsa_get_status(void *, int, u_char *, u_char *);
 182 static  void ubsa_set(void *, int, int, int);
 183 static  int  ubsa_param(void *, int, struct termios *);
 184 static  int  ubsa_open(void *, int);
 185 static  void ubsa_close(void *, int);
 186
 187 static  int  ubsa_request(struct ubsa_softc *, u_int8_t, u_int16_t);
 188 static  void ubsa_dtr(struct ubsa_softc *, int);
 189 static  void ubsa_rts(struct ubsa_softc *, int);
 190 static  void ubsa_baudrate(struct ubsa_softc *, speed_t);
 191 static  void ubsa_parity(struct ubsa_softc *, tcflag_t);
 192 static  void ubsa_databits(struct ubsa_softc *, tcflag_t);
 193 static  void ubsa_stopbits(struct ubsa_softc *, tcflag_t);
 194 static  void ubsa_flow(struct ubsa_softc *, tcflag_t, tcflag_t);
 195
 196 struct ucom_callback ubsa_callback = {
 197         ubsa_get_status,
 198         ubsa_set,
 199         ubsa_param,
 200         NULL,
 201         ubsa_open,
 202         ubsa_close,
 203         NULL,
 204         NULL
 205 };
 206
 207 static const struct usb_devno ubsa_devs [] = {
 208         { USB_DEVICE(0x050d, 0x0103) }, /* Belkin F5U103 serial adapter */
 209         { USB_DEVICE(0x050d, 0x1203) }, /* Belkin F5U120-PC hub */
 210         { USB_DEVICE(0x0565, 0x0001) }, /* Peracom serial converter */
 211         { USB_DEVICE(0x056c, 0x8007) }, /* e-TEK Labs serial port */
 212         { USB_DEVICE(0x0921, 0x1001) }, /* GoHubs GoCOM232 serial converter */
 213         { USB_DEVICE(0x0921, 0x1200) }, /* HandyTech's Braille displays */
 214 };
 215
 216 static device_probe_t ubsa_match;
 217 static device_attach_t ubsa_attach;
 218 static device_detach_t ubsa_detach;
 219
 220 static device_method_t ubsa_methods[] = {
 221         /* Device interface */
 222         DEVMETHOD(device_probe, ubsa_match),
 223         DEVMETHOD(device_attach, ubsa_attach),
 224         DEVMETHOD(device_detach, ubsa_detach),
 225         { 0, 0 }
 226 };
 227
 228 static driver_t ubsa_driver = {
 229         "ucom",
 230         ubsa_methods,
 231         sizeof (struct ubsa_softc)
 232 };
 233
 234 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ucom_devclass, usbd_driver_load, 0);
 235 MODULE_DEPEND(ubsa, usb, 1, 1, 1);
 236 MODULE_DEPEND(ubsa, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);
 237 MODULE_VERSION(ubsa, UBSA_MODVER);
 238
 239 static int
 240 ubsa_match(device_t self)
 241 {
 242         struct usb_attach_arg *uaa = device_get_ivars(self);
 243
 244         if (uaa->iface != NULL)
 245                 return (UMATCH_NONE);
 246
 247         return (usb_lookup(ubsa_devs, uaa->vendor, uaa->product) != NULL ?
 248             UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
 249 }
 250
 251 static int
 252 ubsa_attach(device_t self)
 253 {
 254         struct ubsa_softc *sc = device_get_softc(self);
 255         struct usb_attach_arg *uaa = device_get_ivars(self);
 256         usbd_device_handle dev;
 257         struct ucom_softc *ucom;
 258         usb_config_descriptor_t *cdesc;
 259         usb_interface_descriptor_t *id;
 260         usb_endpoint_descriptor_t *ed;
 261         usbd_status err;
 262         int i;
 263
 264         dev = uaa->device;
 265         ucom = &sc->sc_ucom;
 266         bzero(sc, sizeof (struct ubsa_softc));
 267
 268         /*
 269          * initialize rts, dtr variables to something
 270          * different from boolean 0, 1
 271          */
 272         sc->sc_dtr = -1;
 273         sc->sc_rts = -1;
 274
 275         ucom->sc_dev = self;
 276         ucom->sc_udev = dev;
 277         ucom->sc_iface = uaa->iface;
 278
 279         DPRINTF(("ubsa attach: sc = %p\n", sc));
 280
 281         /* initialize endpoints */
 282         ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
 283         sc->sc_intr_number = -1;
 284         sc->sc_intr_pipe = NULL;
 285
 286         /* Move the device into the configured state. */
 287         err = usbd_set_config_index(dev, UBSA_CONFIG_INDEX, 1);
 288         if (err) {
 289                 device_printf(ucom->sc_dev, "failed to set configuration: %s\n",
 290                               usbd_errstr(err));
 291                 ucom->sc_dying = 1;
 292                 goto error;
 293         }
 294
 295         /* get the config descriptor */
 296         cdesc = usbd_get_config_descriptor(ucom->sc_udev);
 297
 298         if (cdesc == NULL) {
 299                 device_printf(ucom->sc_dev, "failed to get configuration "
 300                               "descriptor\n");
 301                 ucom->sc_dying = 1;
 302                 goto error;
 303         }
 304
 305         /* get the first interface */
 306         err = usbd_device2interface_handle(dev, UBSA_IFACE_INDEX,
 307             &ucom->sc_iface);
 308         if (err) {
 309                 device_printf(ucom->sc_dev, "failed to get interface: %s\n",
 310                               usbd_errstr(err));
 311                 ucom->sc_dying = 1;
 312                 goto error;
 313         }
 314
 315         /* Find the endpoints */
 316
 317         id = usbd_get_interface_descriptor(ucom->sc_iface);
 318         sc->sc_iface_number = id->bInterfaceNumber;
 319
 320         for (i = 0; i < id->bNumEndpoints; i++) {
 321                 ed = usbd_interface2endpoint_descriptor(ucom->sc_iface, i);
 322                 if (ed == NULL) {
 323                         device_printf(ucom->sc_dev, "no endpoint descriptor "
 324                                       "for %d\n", i);
 325                         ucom->sc_dying = 1;
 326                         goto error;
 327                 }
 328
 329                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 330                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
 331                         sc->sc_intr_number = ed->bEndpointAddress;
 332                         sc->sc_isize = UGETW(ed->wMaxPacketSize);
 333                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 334                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 335                         ucom->sc_bulkin_no = ed->bEndpointAddress;
 336                         ucom->sc_ibufsize = UGETW(ed->wMaxPacketSize);
 337                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 338                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 339                         ucom->sc_bulkout_no = ed->bEndpointAddress;
 340                         ucom->sc_obufsize = UGETW(ed->wMaxPacketSize);
 341                 }
 342         }
 343
 344         if (sc->sc_intr_number == -1) {
 345                 device_printf(ucom->sc_dev, "could not find interrupt in\n");
 346                 ucom->sc_dying = 1;
 347                 goto error;
 348         }
 349
 350         /* keep interface for interrupt */
 351         sc->sc_intr_iface = ucom->sc_iface;
 352
 353         if (ucom->sc_bulkin_no == -1) {
 354                 device_printf(ucom->sc_dev, "could not find data bulk in\n");
 355                 ucom->sc_dying = 1;
 356                 goto error;
 357         }
 358
 359         if (ucom->sc_bulkout_no == -1) {
 360                 device_printf(ucom->sc_dev, "could not find data bulk out\n");
 361                 ucom->sc_dying = 1;
 362                 goto error;
 363         }
 364
 365         ucom->sc_parent = sc;
 366         ucom->sc_portno = UCOM_UNK_PORTNO;
 367         /* bulkin, bulkout set above */
 368         ucom->sc_ibufsizepad = ucom->sc_ibufsize;
 369         ucom->sc_opkthdrlen = 0;
 370         ucom->sc_callback = &ubsa_callback;
 371
 372         DPRINTF(("ubsa: in = 0x%x, out = 0x%x, intr = 0x%x\n",
 373             ucom->sc_bulkin_no, ucom->sc_bulkout_no, sc->sc_intr_number));
 374
 375         ucom_attach(ucom);
 376
 377         return 0;
 378
 379 error:
 380         return ENXIO;
 381 }
 382
 383 static int
 384 ubsa_detach(device_t self)
 385 {
 386         struct ubsa_softc *sc = device_get_softc(self);
 387         int rv;
 388
 389
 390         DPRINTF(("ubsa_detach: sc = %p\n", sc));
 391
 392         if (sc->sc_intr_pipe != NULL) {
 393                 usbd_abort_pipe(sc->sc_intr_pipe);
 394                 usbd_close_pipe(sc->sc_intr_pipe);
 395                 kfree(sc->sc_intr_buf, M_USBDEV);
 396                 sc->sc_intr_pipe = NULL;
 397         }
 398
 399         sc->sc_ucom.sc_dying = 1;
 400
 401         rv = ucom_detach(&sc->sc_ucom);
 402
 403         return (rv);
 404 }
 405
 406 static int
 407 ubsa_request(struct ubsa_softc *sc, u_int8_t request, u_int16_t value)
 408 {
 409         usb_device_request_t req;
 410         usbd_status err;
 411
 412         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 413         req.bRequest = request;
 414         USETW(req.wValue, value);
 415         USETW(req.wIndex, sc->sc_iface_number);
 416         USETW(req.wLength, 0);
 417
 418         err = usbd_do_request(sc->sc_ucom.sc_udev, &req, 0);
 419         if (err)
 420                 device_printf(sc->sc_ucom.sc_dev, "ubsa_request: %s\n",
 421                               usbd_errstr(err));
 422         return (err);
 423 }
 424
 425 static void
 426 ubsa_dtr(struct ubsa_softc *sc, int onoff)
 427 {
 428
 429         DPRINTF(("ubsa_dtr: onoff = %d\n", onoff));
 430
 431         if (sc->sc_dtr == onoff)
 432                 return;
 433         sc->sc_dtr = onoff;
 434
 435         ubsa_request(sc, UBSA_SET_DTR, onoff ? 1 : 0);
 436 }
 437
 438 static void
 439 ubsa_rts(struct ubsa_softc *sc, int onoff)
 440 {
 441
 442         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
 443
 444         if (sc->sc_rts == onoff)
 445                 return;
 446         sc->sc_rts = onoff;
 447
 448         ubsa_request(sc, UBSA_SET_RTS, onoff ? 1 : 0);
 449 }
 450
 451 static void
 452 ubsa_break(struct ubsa_softc *sc, int onoff)
 453 {
 454
 455         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
 456
 457         ubsa_request(sc, UBSA_SET_BREAK, onoff ? 1 : 0);
 458 }
 459
 460 static void
 461 ubsa_set(void *addr, int portno, int reg, int onoff)
 462 {
 463         struct ubsa_softc *sc;
 464
 465         sc = addr;
 466         switch (reg) {
 467         case UCOM_SET_DTR:
 468                 ubsa_dtr(sc, onoff);
 469                 break;
 470         case UCOM_SET_RTS:
 471                 ubsa_rts(sc, onoff);
 472                 break;
 473         case UCOM_SET_BREAK:
 474                 ubsa_break(sc, onoff);
 475                 break;
 476         default:
 477                 break;
 478         }
 479 }
 480
 481 static void
 482 ubsa_baudrate(struct ubsa_softc *sc, speed_t speed)
 483 {
 484         u_int16_t value = 0;
 485
 486         DPRINTF(("ubsa_baudrate: speed = %d\n", speed));
 487
 488         switch(speed) {
 489         case B0:
 490                 break;
 491         case B300:
 492         case B600:
 493         case B1200:
 494         case B2400:
 495         case B4800:
 496         case B9600:
 497         case B19200:
 498         case B38400:
 499         case B57600:
 500         case B115200:
 501         case B230400:
 502                 value = B230400 / speed;
 503                 break;
 504         default:
 505                 device_printf(sc->sc_ucom.sc_dev, "ubsa_param: unsupported "
 506                               "baudrate, forcing default of 9600\n");
 507                 value = B230400 / B9600;
 508                 break;
 509         };
 510
 511         if (speed == B0) {
 512                 ubsa_flow(sc, 0, 0);
 513                 ubsa_dtr(sc, 0);
 514                 ubsa_rts(sc, 0);
 515         } else
 516                 ubsa_request(sc, UBSA_SET_BAUDRATE, value);
 517 }
 518
 519 static void
 520 ubsa_parity(struct ubsa_softc *sc, tcflag_t cflag)
 521 {
 522         int value;
 523
 524         DPRINTF(("ubsa_parity: cflag = 0x%x\n", cflag));
 525
 526         if (cflag & PARENB)
 527                 value = (cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
 528         else
 529                 value = UBSA_PARITY_NONE;
 530
 531         ubsa_request(sc, UBSA_SET_PARITY, value);
 532 }
 533
 534 static void
 535 ubsa_databits(struct ubsa_softc *sc, tcflag_t cflag)
 536 {
 537         int value;
 538
 539         DPRINTF(("ubsa_databits: cflag = 0x%x\n", cflag));
 540
 541         switch (cflag & CSIZE) {
 542         case CS5: value = 0; break;
 543         case CS6: value = 1; break;
 544         case CS7: value = 2; break;
 545         case CS8: value = 3; break;
 546         default:
 547                 device_printf(sc->sc_ucom.sc_dev, "ubsa_param: unsupported "
 548                               "databits requested, forcing default of 8\n");
 549                 value = 3;
 550         }
 551
 552         ubsa_request(sc, UBSA_SET_DATA_BITS, value);
 553 }
 554
 555 static void
 556 ubsa_stopbits(struct ubsa_softc *sc, tcflag_t cflag)
 557 {
 558         int value;
 559
 560         DPRINTF(("ubsa_stopbits: cflag = 0x%x\n", cflag));
 561
 562         value = (cflag & CSTOPB) ? 1 : 0;
 563
 564         ubsa_request(sc, UBSA_SET_STOP_BITS, value);
 565 }
 566
 567 static void
 568 ubsa_flow(struct ubsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
 569 {
 570         int value;
 571
 572         DPRINTF(("ubsa_flow: cflag = 0x%x, iflag = 0x%x\n", cflag, iflag));
 573
 574         value = 0;
 575         if (cflag & CRTSCTS)
 576                 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
 577         if (iflag & (IXON|IXOFF))
 578                 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
 579
 580         ubsa_request(sc, UBSA_SET_FLOW_CTRL, value);
 581 }
 582
 583 static int
 584 ubsa_param(void *addr, int portno, struct termios *ti)
 585 {
 586         struct ubsa_softc *sc;
 587
 588         sc = addr;
 589
 590         DPRINTF(("ubsa_param: sc = %p\n", sc));
 591
 592         ubsa_baudrate(sc, ti->c_ospeed);
 593         ubsa_parity(sc, ti->c_cflag);
 594         ubsa_databits(sc, ti->c_cflag);
 595         ubsa_stopbits(sc, ti->c_cflag);
 596         ubsa_flow(sc, ti->c_cflag, ti->c_iflag);
 597
 598         return (0);
 599 }
 600
 601 static int
 602 ubsa_open(void *addr, int portno)
 603 {
 604         struct ubsa_softc *sc;
 605         int err;
 606
 607         sc = addr;
 608         if (sc->sc_ucom.sc_dying)
 609                 return (ENXIO);
 610
 611         DPRINTF(("ubsa_open: sc = %p\n", sc));
 612
 613         if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) {
 614                 sc->sc_intr_buf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 615                 err = usbd_open_pipe_intr(sc->sc_intr_iface,
 616                     sc->sc_intr_number,
 617                     USBD_SHORT_XFER_OK,
 618                     &sc->sc_intr_pipe,
 619                     sc,
 620                     sc->sc_intr_buf,
 621                     sc->sc_isize,
 622                     ubsa_intr,
 623                     UBSA_INTR_INTERVAL);
 624                 if (err) {
 625                         device_printf(sc->sc_ucom.sc_dev, "cannot open "
 626                                       "interrupt pipe (addr %d)\n",
 627                                       sc->sc_intr_number);
 628                         return (EIO);
 629                 }
 630         }
 631
 632         return (0);
 633 }
 634
 635 static void
 636 ubsa_close(void *addr, int portno)
 637 {
 638         struct ubsa_softc *sc;
 639         int err;
 640
 641         sc = addr;
 642         if (sc->sc_ucom.sc_dying)
 643                 return;
 644
 645         DPRINTF(("ubsa_close: close\n"));
 646
 647         if (sc->sc_intr_pipe != NULL) {
 648                 err = usbd_abort_pipe(sc->sc_intr_pipe);
 649                 if (err)
 650                         device_printf(sc->sc_ucom.sc_dev, "abort interrupt "
 651                                       "pipe failed: %s\n", usbd_errstr(err));
 652                 err = usbd_close_pipe(sc->sc_intr_pipe);
 653                 if (err)
 654                         device_printf(sc->sc_ucom.sc_dev, "close interrupt "
 655                                       "pipe failed: %s\n", usbd_errstr(err));
 656                 kfree(sc->sc_intr_buf, M_USBDEV);
 657                 sc->sc_intr_pipe = NULL;
 658         }
 659 }
 660
 661 static void
 662 ubsa_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 663 {
 664         struct ubsa_softc *sc;
 665         u_char *buf;
 666
 667         sc = priv;
 668         buf = sc->sc_intr_buf;
 669         if (sc->sc_ucom.sc_dying)
 670                 return;
 671
 672         if (status != USBD_NORMAL_COMPLETION) {
 673                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
 674                         return;
 675
 676                 DPRINTF(("%s: ubsa_intr: abnormal status: %s\n",
 677                     device_get_nameunit(sc->sc_ucom.sc_dev),
 678                     usbd_errstr(status)));
 679                 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
 680                 return;
 681         }
 682
 683         /* incidentally, Belkin adapter status bits match UART 16550 bits */
 684         sc->sc_lsr = buf[2];
 685         sc->sc_msr = buf[3];
 686
 687         DPRINTF(("%s: ubsa lsr = 0x%02x, msr = 0x%02x\n",
 688             device_get_nameunit(sc->sc_ucom.sc_dev), sc->sc_lsr, sc->sc_msr));
 689
 690         ubsa_notify(sc);
 691 }
 692
 693 /* Handle delayed events. */
 694 static void
 695 ubsa_notify(void *arg)
 696 {
 697         struct ubsa_softc *sc;
 698
 699         sc = arg;
 700         ucom_status_change(&sc->sc_ucom);
 701 }
 702
 703 static void
 704 ubsa_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
 705 {
 706         struct ubsa_softc *sc;
 707
 708         DPRINTF(("ubsa_get_status\n"));
 709
 710         sc = addr;
 711         if (lsr != NULL)
 712                 *lsr = sc->sc_lsr;
 713         if (msr != NULL)
 714                 *msr = sc->sc_msr;
 715 }