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 1.15 2007/08/16 07:03:30 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/usbdevs.h>
  88 #include <bus/usb/usb_quirks.h>
  89
  90 #include "../ucom/ucomvar.h"
  91
  92 #ifdef USB_DEBUG
  93 static int      ubsadebug = 0;
  94 SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
  95 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
  96            &ubsadebug, 0, "ubsa debug level");
  97
  98 #define DPRINTFN(n, x)  do { \
  99                                 if (ubsadebug > (n)) \
 100                                         kprintf x; \
 101                         } while (0)
 102 #else
 103 #define DPRINTFN(n, x)
 104 #endif
 105 #define DPRINTF(x) DPRINTFN(0, x)
 106
 107 #define UBSA_MODVER             1       /* module version */
 108
 109 #define UBSA_CONFIG_INDEX       1
 110 #define UBSA_IFACE_INDEX        0
 111
 112 #define UBSA_INTR_INTERVAL      100     /* ms */
 113
 114 #define UBSA_SET_BAUDRATE       0x00
 115 #define UBSA_SET_STOP_BITS      0x01
 116 #define UBSA_SET_DATA_BITS      0x02
 117 #define UBSA_SET_PARITY         0x03
 118 #define UBSA_SET_DTR            0x0A
 119 #define UBSA_SET_RTS            0x0B
 120 #define UBSA_SET_BREAK          0x0C
 121 #define UBSA_SET_FLOW_CTRL      0x10
 122
 123 #define UBSA_PARITY_NONE        0x00
 124 #define UBSA_PARITY_EVEN        0x01
 125 #define UBSA_PARITY_ODD         0x02
 126 #define UBSA_PARITY_MARK        0x03
 127 #define UBSA_PARITY_SPACE       0x04
 128
 129 #define UBSA_FLOW_NONE          0x0000
 130 #define UBSA_FLOW_OCTS          0x0001
 131 #define UBSA_FLOW_ODSR          0x0002
 132 #define UBSA_FLOW_IDSR          0x0004
 133 #define UBSA_FLOW_IDTR          0x0008
 134 #define UBSA_FLOW_IRTS          0x0010
 135 #define UBSA_FLOW_ORTS          0x0020
 136 #define UBSA_FLOW_UNKNOWN       0x0040
 137 #define UBSA_FLOW_OXON          0x0080
 138 #define UBSA_FLOW_IXON          0x0100
 139
 140 /* line status register */
 141 #define UBSA_LSR_TSRE           0x40    /* Transmitter empty: byte sent */
 142 #define UBSA_LSR_TXRDY          0x20    /* Transmitter buffer empty */
 143 #define UBSA_LSR_BI             0x10    /* Break detected */
 144 #define UBSA_LSR_FE             0x08    /* Framing error: bad stop bit */
 145 #define UBSA_LSR_PE             0x04    /* Parity error */
 146 #define UBSA_LSR_OE             0x02    /* Overrun, lost incoming byte */
 147 #define UBSA_LSR_RXRDY          0x01    /* Byte ready in Receive Buffer */
 148 #define UBSA_LSR_RCV_MASK       0x1f    /* Mask for incoming data or error */
 149
 150 /* modem status register */
 151 /* All deltas are from the last read of the MSR. */
 152 #define UBSA_MSR_DCD            0x80    /* Current Data Carrier Detect */
 153 #define UBSA_MSR_RI             0x40    /* Current Ring Indicator */
 154 #define UBSA_MSR_DSR            0x20    /* Current Data Set Ready */
 155 #define UBSA_MSR_CTS            0x10    /* Current Clear to Send */
 156 #define UBSA_MSR_DDCD           0x08    /* DCD has changed state */
 157 #define UBSA_MSR_TERI           0x04    /* RI has toggled low to high */
 158 #define UBSA_MSR_DDSR           0x02    /* DSR has changed state */
 159 #define UBSA_MSR_DCTS           0x01    /* CTS has changed state */
 160
 161 struct  ubsa_softc {
 162         struct ucom_softc       sc_ucom;
 163
 164         int                     sc_iface_number;        /* interface number */
 165
 166         usbd_interface_handle   sc_intr_iface;  /* interrupt interface */
 167         int                     sc_intr_number; /* interrupt number */
 168         usbd_pipe_handle        sc_intr_pipe;   /* interrupt pipe */
 169         u_char                  *sc_intr_buf;   /* interrupt buffer */
 170         int                     sc_isize;
 171
 172         u_char                  sc_dtr;         /* current DTR state */
 173         u_char                  sc_rts;         /* current RTS state */
 174
 175         u_char                  sc_lsr;         /* Local status register */
 176         u_char                  sc_msr;         /* ubsa status register */
 177 };
 178
 179 static  void ubsa_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
 180 static  void ubsa_notify(void *);
 181
 182 static  void ubsa_get_status(void *, int, u_char *, u_char *);
 183 static  void ubsa_set(void *, int, int, int);
 184 static  int  ubsa_param(void *, int, struct termios *);
 185 static  int  ubsa_open(void *, int);
 186 static  void ubsa_close(void *, int);
 187
 188 static  int  ubsa_request(struct ubsa_softc *, u_int8_t, u_int16_t);
 189 static  void ubsa_dtr(struct ubsa_softc *, int);
 190 static  void ubsa_rts(struct ubsa_softc *, int);
 191 static  void ubsa_baudrate(struct ubsa_softc *, speed_t);
 192 static  void ubsa_parity(struct ubsa_softc *, tcflag_t);
 193 static  void ubsa_databits(struct ubsa_softc *, tcflag_t);
 194 static  void ubsa_stopbits(struct ubsa_softc *, tcflag_t);
 195 static  void ubsa_flow(struct ubsa_softc *, tcflag_t, tcflag_t);
 196
 197 struct ucom_callback ubsa_callback = {
 198         ubsa_get_status,
 199         ubsa_set,
 200         ubsa_param,
 201         NULL,
 202         ubsa_open,
 203         ubsa_close,
 204         NULL,
 205         NULL
 206 };
 207
 208 static const struct ubsa_product {
 209         uint16_t        vendor;
 210         uint16_t        product;
 211 } ubsa_products [] = {
 212         /* BELKIN F5U103 */
 213         { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103 },
 214         /* BELKIN F5U120 */
 215         { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120 },
 216         /* GoHubs GO-COM232 */
 217         { USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM },
 218         /* GoHubs GO-COM232 */
 219         { USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232 },
 220         /* HandyTech's Braille displays */
 221         { USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_HANDYLINK },
 222         /* Peracom */
 223         { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1 },
 224         { 0, 0 }
 225 };
 226
 227 static device_probe_t ubsa_match;
 228 static device_attach_t ubsa_attach;
 229 static device_detach_t ubsa_detach;
 230
 231 static device_method_t ubsa_methods[] = {
 232         /* Device interface */
 233         DEVMETHOD(device_probe, ubsa_match),
 234         DEVMETHOD(device_attach, ubsa_attach),
 235         DEVMETHOD(device_detach, ubsa_detach),
 236         { 0, 0 }
 237 };
 238
 239 static driver_t ubsa_driver = {
 240         "ucom",
 241         ubsa_methods,
 242         sizeof (struct ubsa_softc)
 243 };
 244
 245 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ucom_devclass, usbd_driver_load, 0);
 246 MODULE_DEPEND(ubsa, usb, 1, 1, 1);
 247 MODULE_DEPEND(ubsa, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);
 248 MODULE_VERSION(ubsa, UBSA_MODVER);
 249
 250 static int
 251 ubsa_match(device_t self)
 252 {
 253         struct usb_attach_arg *uaa = device_get_ivars(self);
 254         int i;
 255
 256         if (uaa->iface != NULL)
 257                 return (UMATCH_NONE);
 258
 259         for (i = 0; ubsa_products[i].vendor != 0; i++) {
 260                 if (ubsa_products[i].vendor == uaa->vendor &&
 261                     ubsa_products[i].product == uaa->product) {
 262                         return (UMATCH_VENDOR_PRODUCT);
 263                 }
 264         }
 265         return (UMATCH_NONE);
 266 }
 267
 268 static int
 269 ubsa_attach(device_t self)
 270 {
 271         struct ubsa_softc *sc = device_get_softc(self);
 272         struct usb_attach_arg *uaa = device_get_ivars(self);
 273         usbd_device_handle dev;
 274         struct ucom_softc *ucom;
 275         usb_config_descriptor_t *cdesc;
 276         usb_interface_descriptor_t *id;
 277         usb_endpoint_descriptor_t *ed;
 278         char *devinfo;
 279         const char *devname;
 280         usbd_status err;
 281         int i;
 282
 283         dev = uaa->device;
 284         devinfo = kmalloc(1024, M_USBDEV, M_INTWAIT);
 285         ucom = &sc->sc_ucom;
 286
 287         bzero(sc, sizeof (struct ubsa_softc));
 288
 289         /*
 290          * initialize rts, dtr variables to something
 291          * different from boolean 0, 1
 292          */
 293         sc->sc_dtr = -1;
 294         sc->sc_rts = -1;
 295
 296         usbd_devinfo(dev, 0, devinfo);
 297         ucom->sc_dev = self;
 298         device_set_desc_copy(self, devinfo);
 299
 300         ucom->sc_udev = dev;
 301         ucom->sc_iface = uaa->iface;
 302
 303         devname = device_get_nameunit(ucom->sc_dev);
 304         kprintf("%s: %s\n", devname, devinfo);
 305
 306         DPRINTF(("ubsa attach: sc = %p\n", sc));
 307
 308         /* initialize endpoints */
 309         ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
 310         sc->sc_intr_number = -1;
 311         sc->sc_intr_pipe = NULL;
 312
 313         /* Move the device into the configured state. */
 314         err = usbd_set_config_index(dev, UBSA_CONFIG_INDEX, 1);
 315         if (err) {
 316                 kprintf("%s: failed to set configuration: %s\n",
 317                     devname, usbd_errstr(err));
 318                 ucom->sc_dying = 1;
 319                 goto error;
 320         }
 321
 322         /* get the config descriptor */
 323         cdesc = usbd_get_config_descriptor(ucom->sc_udev);
 324
 325         if (cdesc == NULL) {
 326                 kprintf("%s: failed to get configuration descriptor\n",
 327                     device_get_nameunit(ucom->sc_dev));
 328                 ucom->sc_dying = 1;
 329                 goto error;
 330         }
 331
 332         /* get the first interface */
 333         err = usbd_device2interface_handle(dev, UBSA_IFACE_INDEX,
 334             &ucom->sc_iface);
 335         if (err) {
 336                 kprintf("%s: failed to get interface: %s\n",
 337                         devname, usbd_errstr(err));
 338                 ucom->sc_dying = 1;
 339                 goto error;
 340         }
 341
 342         /* Find the endpoints */
 343
 344         id = usbd_get_interface_descriptor(ucom->sc_iface);
 345         sc->sc_iface_number = id->bInterfaceNumber;
 346
 347         for (i = 0; i < id->bNumEndpoints; i++) {
 348                 ed = usbd_interface2endpoint_descriptor(ucom->sc_iface, i);
 349                 if (ed == NULL) {
 350                         kprintf("%s: no endpoint descriptor for %d\n",
 351                             device_get_nameunit(ucom->sc_dev), i);
 352                         ucom->sc_dying = 1;
 353                         goto error;
 354                 }
 355
 356                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 357                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
 358                         sc->sc_intr_number = ed->bEndpointAddress;
 359                         sc->sc_isize = UGETW(ed->wMaxPacketSize);
 360                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 361                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 362                         ucom->sc_bulkin_no = ed->bEndpointAddress;
 363                         ucom->sc_ibufsize = UGETW(ed->wMaxPacketSize);
 364                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 365                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 366                         ucom->sc_bulkout_no = ed->bEndpointAddress;
 367                         ucom->sc_obufsize = UGETW(ed->wMaxPacketSize);
 368                 }
 369         }
 370
 371         if (sc->sc_intr_number == -1) {
 372                 kprintf("%s: Could not find interrupt in\n",
 373                     device_get_nameunit(ucom->sc_dev));
 374                 ucom->sc_dying = 1;
 375                 goto error;
 376         }
 377
 378         /* keep interface for interrupt */
 379         sc->sc_intr_iface = ucom->sc_iface;
 380
 381         if (ucom->sc_bulkin_no == -1) {
 382                 kprintf("%s: Could not find data bulk in\n",
 383                     device_get_nameunit(ucom->sc_dev));
 384                 ucom->sc_dying = 1;
 385                 goto error;
 386         }
 387
 388         if (ucom->sc_bulkout_no == -1) {
 389                 kprintf("%s: Could not find data bulk out\n",
 390                     device_get_nameunit(ucom->sc_dev));
 391                 ucom->sc_dying = 1;
 392                 goto error;
 393         }
 394
 395         ucom->sc_parent = sc;
 396         ucom->sc_portno = UCOM_UNK_PORTNO;
 397         /* bulkin, bulkout set above */
 398         ucom->sc_ibufsizepad = ucom->sc_ibufsize;
 399         ucom->sc_opkthdrlen = 0;
 400         ucom->sc_callback = &ubsa_callback;
 401
 402         DPRINTF(("ubsa: in = 0x%x, out = 0x%x, intr = 0x%x\n",
 403             ucom->sc_bulkin_no, ucom->sc_bulkout_no, sc->sc_intr_number));
 404
 405         ucom_attach(ucom);
 406
 407         kfree(devinfo, M_USBDEV);
 408         return 0;
 409
 410 error:
 411         kfree(devinfo, M_USBDEV);
 412         return ENXIO;
 413 }
 414
 415 static int
 416 ubsa_detach(device_t self)
 417 {
 418         struct ubsa_softc *sc = device_get_softc(self);
 419         int rv;
 420
 421
 422         DPRINTF(("ubsa_detach: sc = %p\n", sc));
 423
 424         if (sc->sc_intr_pipe != NULL) {
 425                 usbd_abort_pipe(sc->sc_intr_pipe);
 426                 usbd_close_pipe(sc->sc_intr_pipe);
 427                 kfree(sc->sc_intr_buf, M_USBDEV);
 428                 sc->sc_intr_pipe = NULL;
 429         }
 430
 431         sc->sc_ucom.sc_dying = 1;
 432
 433         rv = ucom_detach(&sc->sc_ucom);
 434
 435         return (rv);
 436 }
 437
 438 static int
 439 ubsa_request(struct ubsa_softc *sc, u_int8_t request, u_int16_t value)
 440 {
 441         usb_device_request_t req;
 442         usbd_status err;
 443
 444         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 445         req.bRequest = request;
 446         USETW(req.wValue, value);
 447         USETW(req.wIndex, sc->sc_iface_number);
 448         USETW(req.wLength, 0);
 449
 450         err = usbd_do_request(sc->sc_ucom.sc_udev, &req, 0);
 451         if (err)
 452                 kprintf("%s: ubsa_request: %s\n",
 453                     device_get_nameunit(sc->sc_ucom.sc_dev), usbd_errstr(err));
 454         return (err);
 455 }
 456
 457 static void
 458 ubsa_dtr(struct ubsa_softc *sc, int onoff)
 459 {
 460
 461         DPRINTF(("ubsa_dtr: onoff = %d\n", onoff));
 462
 463         if (sc->sc_dtr == onoff)
 464                 return;
 465         sc->sc_dtr = onoff;
 466
 467         ubsa_request(sc, UBSA_SET_DTR, onoff ? 1 : 0);
 468 }
 469
 470 static void
 471 ubsa_rts(struct ubsa_softc *sc, int onoff)
 472 {
 473
 474         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
 475
 476         if (sc->sc_rts == onoff)
 477                 return;
 478         sc->sc_rts = onoff;
 479
 480         ubsa_request(sc, UBSA_SET_RTS, onoff ? 1 : 0);
 481 }
 482
 483 static void
 484 ubsa_break(struct ubsa_softc *sc, int onoff)
 485 {
 486
 487         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
 488
 489         ubsa_request(sc, UBSA_SET_BREAK, onoff ? 1 : 0);
 490 }
 491
 492 static void
 493 ubsa_set(void *addr, int portno, int reg, int onoff)
 494 {
 495         struct ubsa_softc *sc;
 496
 497         sc = addr;
 498         switch (reg) {
 499         case UCOM_SET_DTR:
 500                 ubsa_dtr(sc, onoff);
 501                 break;
 502         case UCOM_SET_RTS:
 503                 ubsa_rts(sc, onoff);
 504                 break;
 505         case UCOM_SET_BREAK:
 506                 ubsa_break(sc, onoff);
 507                 break;
 508         default:
 509                 break;
 510         }
 511 }
 512
 513 static void
 514 ubsa_baudrate(struct ubsa_softc *sc, speed_t speed)
 515 {
 516         u_int16_t value = 0;
 517
 518         DPRINTF(("ubsa_baudrate: speed = %d\n", speed));
 519
 520         switch(speed) {
 521         case B0:
 522                 break;
 523         case B300:
 524         case B600:
 525         case B1200:
 526         case B2400:
 527         case B4800:
 528         case B9600:
 529         case B19200:
 530         case B38400:
 531         case B57600:
 532         case B115200:
 533         case B230400:
 534                 value = B230400 / speed;
 535                 break;
 536         default:
 537                 kprintf("%s: ubsa_param: unsupported baudrate, "
 538                     "forcing default of 9600\n",
 539                     device_get_nameunit(sc->sc_ucom.sc_dev));
 540                 value = B230400 / B9600;
 541                 break;
 542         };
 543
 544         if (speed == B0) {
 545                 ubsa_flow(sc, 0, 0);
 546                 ubsa_dtr(sc, 0);
 547                 ubsa_rts(sc, 0);
 548         } else
 549                 ubsa_request(sc, UBSA_SET_BAUDRATE, value);
 550 }
 551
 552 static void
 553 ubsa_parity(struct ubsa_softc *sc, tcflag_t cflag)
 554 {
 555         int value;
 556
 557         DPRINTF(("ubsa_parity: cflag = 0x%x\n", cflag));
 558
 559         if (cflag & PARENB)
 560                 value = (cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
 561         else
 562                 value = UBSA_PARITY_NONE;
 563
 564         ubsa_request(sc, UBSA_SET_PARITY, value);
 565 }
 566
 567 static void
 568 ubsa_databits(struct ubsa_softc *sc, tcflag_t cflag)
 569 {
 570         int value;
 571
 572         DPRINTF(("ubsa_databits: cflag = 0x%x\n", cflag));
 573
 574         switch (cflag & CSIZE) {
 575         case CS5: value = 0; break;
 576         case CS6: value = 1; break;
 577         case CS7: value = 2; break;
 578         case CS8: value = 3; break;
 579         default:
 580                 kprintf("%s: ubsa_param: unsupported databits requested, "
 581                     "forcing default of 8\n",
 582                     device_get_nameunit(sc->sc_ucom.sc_dev));
 583                 value = 3;
 584         }
 585
 586         ubsa_request(sc, UBSA_SET_DATA_BITS, value);
 587 }
 588
 589 static void
 590 ubsa_stopbits(struct ubsa_softc *sc, tcflag_t cflag)
 591 {
 592         int value;
 593
 594         DPRINTF(("ubsa_stopbits: cflag = 0x%x\n", cflag));
 595
 596         value = (cflag & CSTOPB) ? 1 : 0;
 597
 598         ubsa_request(sc, UBSA_SET_STOP_BITS, value);
 599 }
 600
 601 static void
 602 ubsa_flow(struct ubsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
 603 {
 604         int value;
 605
 606         DPRINTF(("ubsa_flow: cflag = 0x%x, iflag = 0x%x\n", cflag, iflag));
 607
 608         value = 0;
 609         if (cflag & CRTSCTS)
 610                 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
 611         if (iflag & (IXON|IXOFF))
 612                 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
 613
 614         ubsa_request(sc, UBSA_SET_FLOW_CTRL, value);
 615 }
 616
 617 static int
 618 ubsa_param(void *addr, int portno, struct termios *ti)
 619 {
 620         struct ubsa_softc *sc;
 621
 622         sc = addr;
 623
 624         DPRINTF(("ubsa_param: sc = %p\n", sc));
 625
 626         ubsa_baudrate(sc, ti->c_ospeed);
 627         ubsa_parity(sc, ti->c_cflag);
 628         ubsa_databits(sc, ti->c_cflag);
 629         ubsa_stopbits(sc, ti->c_cflag);
 630         ubsa_flow(sc, ti->c_cflag, ti->c_iflag);
 631
 632         return (0);
 633 }
 634
 635 static int
 636 ubsa_open(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 (ENXIO);
 644
 645         DPRINTF(("ubsa_open: sc = %p\n", sc));
 646
 647         if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) {
 648                 sc->sc_intr_buf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 649                 err = usbd_open_pipe_intr(sc->sc_intr_iface,
 650                     sc->sc_intr_number,
 651                     USBD_SHORT_XFER_OK,
 652                     &sc->sc_intr_pipe,
 653                     sc,
 654                     sc->sc_intr_buf,
 655                     sc->sc_isize,
 656                     ubsa_intr,
 657                     UBSA_INTR_INTERVAL);
 658                 if (err) {
 659                         kprintf("%s: cannot open interrupt pipe (addr %d)\n",
 660                             device_get_nameunit(sc->sc_ucom.sc_dev),
 661                             sc->sc_intr_number);
 662                         return (EIO);
 663                 }
 664         }
 665
 666         return (0);
 667 }
 668
 669 static void
 670 ubsa_close(void *addr, int portno)
 671 {
 672         struct ubsa_softc *sc;
 673         int err;
 674
 675         sc = addr;
 676         if (sc->sc_ucom.sc_dying)
 677                 return;
 678
 679         DPRINTF(("ubsa_close: close\n"));
 680
 681         if (sc->sc_intr_pipe != NULL) {
 682                 err = usbd_abort_pipe(sc->sc_intr_pipe);
 683                 if (err)
 684                         kprintf("%s: abort interrupt pipe failed: %s\n",
 685                             device_get_nameunit(sc->sc_ucom.sc_dev),
 686                             usbd_errstr(err));
 687                 err = usbd_close_pipe(sc->sc_intr_pipe);
 688                 if (err)
 689                         kprintf("%s: close interrupt pipe failed: %s\n",
 690                             device_get_nameunit(sc->sc_ucom.sc_dev),
 691                             usbd_errstr(err));
 692                 kfree(sc->sc_intr_buf, M_USBDEV);
 693                 sc->sc_intr_pipe = NULL;
 694         }
 695 }
 696
 697 static void
 698 ubsa_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 699 {
 700         struct ubsa_softc *sc;
 701         u_char *buf;
 702
 703         sc = priv;
 704         buf = sc->sc_intr_buf;
 705         if (sc->sc_ucom.sc_dying)
 706                 return;
 707
 708         if (status != USBD_NORMAL_COMPLETION) {
 709                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
 710                         return;
 711
 712                 DPRINTF(("%s: ubsa_intr: abnormal status: %s\n",
 713                     device_get_nameunit(sc->sc_ucom.sc_dev),
 714                     usbd_errstr(status)));
 715                 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
 716                 return;
 717         }
 718
 719         /* incidentally, Belkin adapter status bits match UART 16550 bits */
 720         sc->sc_lsr = buf[2];
 721         sc->sc_msr = buf[3];
 722
 723         DPRINTF(("%s: ubsa lsr = 0x%02x, msr = 0x%02x\n",
 724             device_get_nameunit(sc->sc_ucom.sc_dev), sc->sc_lsr, sc->sc_msr));
 725
 726         ubsa_notify(sc);
 727 }
 728
 729 /* Handle delayed events. */
 730 static void
 731 ubsa_notify(void *arg)
 732 {
 733         struct ubsa_softc *sc;
 734
 735         sc = arg;
 736         ucom_status_change(&sc->sc_ucom);
 737 }
 738
 739 static void
 740 ubsa_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
 741 {
 742         struct ubsa_softc *sc;
 743
 744         DPRINTF(("ubsa_get_status\n"));
 745
 746         sc = addr;
 747         if (lsr != NULL)
 748                 *lsr = sc->sc_lsr;
 749         if (msr != NULL)
 750                 *msr = sc->sc_msr;
 751 }