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 1.12 2007/06/28 13:55:12 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/vnode.h>
  80 #include <sys/poll.h>
  81 #include <sys/sysctl.h>
  82
  83 #include <bus/usb/usb.h>
  84 #include <bus/usb/usbcdc.h>
  85
  86 #include <bus/usb/usbdi.h>
  87 #include <bus/usb/usbdi_util.h>
  88 #include <bus/usb/usbdevs.h>
  89 #include <bus/usb/usb_quirks.h>
  90
  91 #include "../ucom/ucomvar.h"
  92
  93 #ifdef USB_DEBUG
  94 static int      ubsadebug = 0;
  95 SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
  96 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
  97            &ubsadebug, 0, "ubsa debug level");
  98
  99 #define DPRINTFN(n, x)  do { \
 100                                 if (ubsadebug > (n)) \
 101                                         kprintf x; \
 102                         } while (0)
 103 #else
 104 #define DPRINTFN(n, x)
 105 #endif
 106 #define DPRINTF(x) DPRINTFN(0, x)
 107
 108 #define UBSA_MODVER             1       /* module version */
 109
 110 #define UBSA_CONFIG_INDEX       1
 111 #define UBSA_IFACE_INDEX        0
 112
 113 #define UBSA_INTR_INTERVAL      100     /* ms */
 114
 115 #define UBSA_SET_BAUDRATE       0x00
 116 #define UBSA_SET_STOP_BITS      0x01
 117 #define UBSA_SET_DATA_BITS      0x02
 118 #define UBSA_SET_PARITY         0x03
 119 #define UBSA_SET_DTR            0x0A
 120 #define UBSA_SET_RTS            0x0B
 121 #define UBSA_SET_BREAK          0x0C
 122 #define UBSA_SET_FLOW_CTRL      0x10
 123
 124 #define UBSA_PARITY_NONE        0x00
 125 #define UBSA_PARITY_EVEN        0x01
 126 #define UBSA_PARITY_ODD         0x02
 127 #define UBSA_PARITY_MARK        0x03
 128 #define UBSA_PARITY_SPACE       0x04
 129
 130 #define UBSA_FLOW_NONE          0x0000
 131 #define UBSA_FLOW_OCTS          0x0001
 132 #define UBSA_FLOW_ODSR          0x0002
 133 #define UBSA_FLOW_IDSR          0x0004
 134 #define UBSA_FLOW_IDTR          0x0008
 135 #define UBSA_FLOW_IRTS          0x0010
 136 #define UBSA_FLOW_ORTS          0x0020
 137 #define UBSA_FLOW_UNKNOWN       0x0040
 138 #define UBSA_FLOW_OXON          0x0080
 139 #define UBSA_FLOW_IXON          0x0100
 140
 141 /* line status register */
 142 #define UBSA_LSR_TSRE           0x40    /* Transmitter empty: byte sent */
 143 #define UBSA_LSR_TXRDY          0x20    /* Transmitter buffer empty */
 144 #define UBSA_LSR_BI             0x10    /* Break detected */
 145 #define UBSA_LSR_FE             0x08    /* Framing error: bad stop bit */
 146 #define UBSA_LSR_PE             0x04    /* Parity error */
 147 #define UBSA_LSR_OE             0x02    /* Overrun, lost incoming byte */
 148 #define UBSA_LSR_RXRDY          0x01    /* Byte ready in Receive Buffer */
 149 #define UBSA_LSR_RCV_MASK       0x1f    /* Mask for incoming data or error */
 150
 151 /* modem status register */
 152 /* All deltas are from the last read of the MSR. */
 153 #define UBSA_MSR_DCD            0x80    /* Current Data Carrier Detect */
 154 #define UBSA_MSR_RI             0x40    /* Current Ring Indicator */
 155 #define UBSA_MSR_DSR            0x20    /* Current Data Set Ready */
 156 #define UBSA_MSR_CTS            0x10    /* Current Clear to Send */
 157 #define UBSA_MSR_DDCD           0x08    /* DCD has changed state */
 158 #define UBSA_MSR_TERI           0x04    /* RI has toggled low to high */
 159 #define UBSA_MSR_DDSR           0x02    /* DSR has changed state */
 160 #define UBSA_MSR_DCTS           0x01    /* CTS has changed state */
 161
 162 struct  ubsa_softc {
 163         struct ucom_softc       sc_ucom;
 164
 165         int                     sc_iface_number;        /* interface number */
 166
 167         usbd_interface_handle   sc_intr_iface;  /* interrupt interface */
 168         int                     sc_intr_number; /* interrupt number */
 169         usbd_pipe_handle        sc_intr_pipe;   /* interrupt pipe */
 170         u_char                  *sc_intr_buf;   /* interrupt buffer */
 171         int                     sc_isize;
 172
 173         u_char                  sc_dtr;         /* current DTR state */
 174         u_char                  sc_rts;         /* current RTS state */
 175
 176         u_char                  sc_lsr;         /* Local status register */
 177         u_char                  sc_msr;         /* ubsa status register */
 178 };
 179
 180 static  void ubsa_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
 181 static  void ubsa_notify(void *);
 182
 183 static  void ubsa_get_status(void *, int, u_char *, u_char *);
 184 static  void ubsa_set(void *, int, int, int);
 185 static  int  ubsa_param(void *, int, struct termios *);
 186 static  int  ubsa_open(void *, int);
 187 static  void ubsa_close(void *, int);
 188
 189 static  int  ubsa_request(struct ubsa_softc *, u_int8_t, u_int16_t);
 190 static  void ubsa_dtr(struct ubsa_softc *, int);
 191 static  void ubsa_rts(struct ubsa_softc *, int);
 192 static  void ubsa_baudrate(struct ubsa_softc *, speed_t);
 193 static  void ubsa_parity(struct ubsa_softc *, tcflag_t);
 194 static  void ubsa_databits(struct ubsa_softc *, tcflag_t);
 195 static  void ubsa_stopbits(struct ubsa_softc *, tcflag_t);
 196 static  void ubsa_flow(struct ubsa_softc *, tcflag_t, tcflag_t);
 197
 198 struct ucom_callback ubsa_callback = {
 199         ubsa_get_status,
 200         ubsa_set,
 201         ubsa_param,
 202         NULL,
 203         ubsa_open,
 204         ubsa_close,
 205         NULL,
 206         NULL
 207 };
 208
 209 static const struct ubsa_product {
 210         uint16_t        vendor;
 211         uint16_t        product;
 212 } ubsa_products [] = {
 213         /* BELKIN F5U103 */
 214         { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103 },
 215         /* BELKIN F5U120 */
 216         { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120 },
 217         /* GoHubs GO-COM232 */
 218         { USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM },
 219         /* GoHubs GO-COM232 */
 220         { USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232 },
 221         /* Peracom */
 222         { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1 },
 223         { 0, 0 }
 224 };
 225
 226 static device_probe_t ubsa_match;
 227 static device_attach_t ubsa_attach;
 228 static device_detach_t ubsa_detach;
 229
 230 static device_method_t ubsa_methods[] = {
 231         /* Device interface */
 232         DEVMETHOD(device_probe, ubsa_match),
 233         DEVMETHOD(device_attach, ubsa_attach),
 234         DEVMETHOD(device_detach, ubsa_detach),
 235         { 0, 0 }
 236 };
 237
 238 static driver_t ubsa_driver = {
 239         "ucom",
 240         ubsa_methods,
 241         sizeof (struct ubsa_softc)
 242 };
 243
 244 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ucom_devclass, usbd_driver_load, 0);
 245 MODULE_DEPEND(ubsa, usb, 1, 1, 1);
 246 MODULE_DEPEND(ubsa, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);
 247 MODULE_VERSION(ubsa, UBSA_MODVER);
 248
 249 USB_MATCH(ubsa)
 250 {
 251         USB_MATCH_START(ubsa, uaa);
 252         int i;
 253
 254         if (uaa->iface != NULL)
 255                 return (UMATCH_NONE);
 256
 257         for (i = 0; ubsa_products[i].vendor != 0; i++) {
 258                 if (ubsa_products[i].vendor == uaa->vendor &&
 259                     ubsa_products[i].product == uaa->product) {
 260                         return (UMATCH_VENDOR_PRODUCT);
 261                 }
 262         }
 263         return (UMATCH_NONE);
 264 }
 265
 266 USB_ATTACH(ubsa)
 267 {
 268         USB_ATTACH_START(ubsa, sc, uaa);
 269         usbd_device_handle dev;
 270         struct ucom_softc *ucom;
 271         usb_config_descriptor_t *cdesc;
 272         usb_interface_descriptor_t *id;
 273         usb_endpoint_descriptor_t *ed;
 274         char *devinfo;
 275         const char *devname;
 276         usbd_status err;
 277         int i;
 278
 279         dev = uaa->device;
 280         devinfo = kmalloc(1024, M_USBDEV, M_INTWAIT);
 281         ucom = &sc->sc_ucom;
 282
 283         bzero(sc, sizeof (struct ubsa_softc));
 284
 285         /*
 286          * initialize rts, dtr variables to something
 287          * different from boolean 0, 1
 288          */
 289         sc->sc_dtr = -1;
 290         sc->sc_rts = -1;
 291
 292         usbd_devinfo(dev, 0, devinfo);
 293         /* USB_ATTACH_SETUP; */
 294         ucom->sc_dev = self;
 295         device_set_desc_copy(self, devinfo);
 296         /* USB_ATTACH_SETUP; */
 297
 298         ucom->sc_udev = dev;
 299         ucom->sc_iface = uaa->iface;
 300
 301         devname = device_get_nameunit(ucom->sc_dev);
 302         kprintf("%s: %s\n", devname, devinfo);
 303
 304         DPRINTF(("ubsa attach: sc = %p\n", sc));
 305
 306         /* initialize endpoints */
 307         ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
 308         sc->sc_intr_number = -1;
 309         sc->sc_intr_pipe = NULL;
 310
 311         /* Move the device into the configured state. */
 312         err = usbd_set_config_index(dev, UBSA_CONFIG_INDEX, 1);
 313         if (err) {
 314                 kprintf("%s: failed to set configuration: %s\n",
 315                     devname, usbd_errstr(err));
 316                 ucom->sc_dying = 1;
 317                 goto error;
 318         }
 319
 320         /* get the config descriptor */
 321         cdesc = usbd_get_config_descriptor(ucom->sc_udev);
 322
 323         if (cdesc == NULL) {
 324                 kprintf("%s: failed to get configuration descriptor\n",
 325                     device_get_nameunit(ucom->sc_dev));
 326                 ucom->sc_dying = 1;
 327                 goto error;
 328         }
 329
 330         /* get the first interface */
 331         err = usbd_device2interface_handle(dev, UBSA_IFACE_INDEX,
 332             &ucom->sc_iface);
 333         if (err) {
 334                 kprintf("%s: failed to get interface: %s\n",
 335                         devname, usbd_errstr(err));
 336                 ucom->sc_dying = 1;
 337                 goto error;
 338         }
 339
 340         /* Find the endpoints */
 341
 342         id = usbd_get_interface_descriptor(ucom->sc_iface);
 343         sc->sc_iface_number = id->bInterfaceNumber;
 344
 345         for (i = 0; i < id->bNumEndpoints; i++) {
 346                 ed = usbd_interface2endpoint_descriptor(ucom->sc_iface, i);
 347                 if (ed == NULL) {
 348                         kprintf("%s: no endpoint descriptor for %d\n",
 349                             device_get_nameunit(ucom->sc_dev), i);
 350                         ucom->sc_dying = 1;
 351                         goto error;
 352                 }
 353
 354                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 355                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
 356                         sc->sc_intr_number = ed->bEndpointAddress;
 357                         sc->sc_isize = UGETW(ed->wMaxPacketSize);
 358                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 359                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 360                         ucom->sc_bulkin_no = ed->bEndpointAddress;
 361                         ucom->sc_ibufsize = UGETW(ed->wMaxPacketSize);
 362                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 363                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 364                         ucom->sc_bulkout_no = ed->bEndpointAddress;
 365                         ucom->sc_obufsize = UGETW(ed->wMaxPacketSize);
 366                 }
 367         }
 368
 369         if (sc->sc_intr_number == -1) {
 370                 kprintf("%s: Could not find interrupt in\n",
 371                     device_get_nameunit(ucom->sc_dev));
 372                 ucom->sc_dying = 1;
 373                 goto error;
 374         }
 375
 376         /* keep interface for interrupt */
 377         sc->sc_intr_iface = ucom->sc_iface;
 378
 379         if (ucom->sc_bulkin_no == -1) {
 380                 kprintf("%s: Could not find data bulk in\n",
 381                     device_get_nameunit(ucom->sc_dev));
 382                 ucom->sc_dying = 1;
 383                 goto error;
 384         }
 385
 386         if (ucom->sc_bulkout_no == -1) {
 387                 kprintf("%s: Could not find data bulk out\n",
 388                     device_get_nameunit(ucom->sc_dev));
 389                 ucom->sc_dying = 1;
 390                 goto error;
 391         }
 392
 393         ucom->sc_parent = sc;
 394         ucom->sc_portno = UCOM_UNK_PORTNO;
 395         /* bulkin, bulkout set above */
 396         ucom->sc_ibufsizepad = ucom->sc_ibufsize;
 397         ucom->sc_opkthdrlen = 0;
 398         ucom->sc_callback = &ubsa_callback;
 399
 400         DPRINTF(("ubsa: in = 0x%x, out = 0x%x, intr = 0x%x\n",
 401             ucom->sc_bulkin_no, ucom->sc_bulkout_no, sc->sc_intr_number));
 402
 403         ucom_attach(ucom);
 404
 405         kfree(devinfo, M_USBDEV);
 406         USB_ATTACH_SUCCESS_RETURN;
 407
 408 error:
 409         kfree(devinfo, M_USBDEV);
 410         USB_ATTACH_ERROR_RETURN;
 411 }
 412
 413 USB_DETACH(ubsa)
 414 {
 415         USB_DETACH_START(ubsa, sc);
 416         int rv;
 417
 418
 419         DPRINTF(("ubsa_detach: sc = %p\n", sc));
 420
 421         if (sc->sc_intr_pipe != NULL) {
 422                 usbd_abort_pipe(sc->sc_intr_pipe);
 423                 usbd_close_pipe(sc->sc_intr_pipe);
 424                 kfree(sc->sc_intr_buf, M_USBDEV);
 425                 sc->sc_intr_pipe = NULL;
 426         }
 427
 428         sc->sc_ucom.sc_dying = 1;
 429
 430         rv = ucom_detach(&sc->sc_ucom);
 431
 432         return (rv);
 433 }
 434
 435 static int
 436 ubsa_request(struct ubsa_softc *sc, u_int8_t request, u_int16_t value)
 437 {
 438         usb_device_request_t req;
 439         usbd_status err;
 440
 441         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 442         req.bRequest = request;
 443         USETW(req.wValue, value);
 444         USETW(req.wIndex, sc->sc_iface_number);
 445         USETW(req.wLength, 0);
 446
 447         err = usbd_do_request(sc->sc_ucom.sc_udev, &req, 0);
 448         if (err)
 449                 kprintf("%s: ubsa_request: %s\n",
 450                     device_get_nameunit(sc->sc_ucom.sc_dev), usbd_errstr(err));
 451         return (err);
 452 }
 453
 454 static void
 455 ubsa_dtr(struct ubsa_softc *sc, int onoff)
 456 {
 457
 458         DPRINTF(("ubsa_dtr: onoff = %d\n", onoff));
 459
 460         if (sc->sc_dtr == onoff)
 461                 return;
 462         sc->sc_dtr = onoff;
 463
 464         ubsa_request(sc, UBSA_SET_DTR, onoff ? 1 : 0);
 465 }
 466
 467 static void
 468 ubsa_rts(struct ubsa_softc *sc, int onoff)
 469 {
 470
 471         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
 472
 473         if (sc->sc_rts == onoff)
 474                 return;
 475         sc->sc_rts = onoff;
 476
 477         ubsa_request(sc, UBSA_SET_RTS, onoff ? 1 : 0);
 478 }
 479
 480 static void
 481 ubsa_break(struct ubsa_softc *sc, int onoff)
 482 {
 483
 484         DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
 485
 486         ubsa_request(sc, UBSA_SET_BREAK, onoff ? 1 : 0);
 487 }
 488
 489 static void
 490 ubsa_set(void *addr, int portno, int reg, int onoff)
 491 {
 492         struct ubsa_softc *sc;
 493
 494         sc = addr;
 495         switch (reg) {
 496         case UCOM_SET_DTR:
 497                 ubsa_dtr(sc, onoff);
 498                 break;
 499         case UCOM_SET_RTS:
 500                 ubsa_rts(sc, onoff);
 501                 break;
 502         case UCOM_SET_BREAK:
 503                 ubsa_break(sc, onoff);
 504                 break;
 505         default:
 506                 break;
 507         }
 508 }
 509
 510 static void
 511 ubsa_baudrate(struct ubsa_softc *sc, speed_t speed)
 512 {
 513         u_int16_t value = 0;
 514
 515         DPRINTF(("ubsa_baudrate: speed = %d\n", speed));
 516
 517         switch(speed) {
 518         case B0:
 519                 break;
 520         case B300:
 521         case B600:
 522         case B1200:
 523         case B2400:
 524         case B4800:
 525         case B9600:
 526         case B19200:
 527         case B38400:
 528         case B57600:
 529         case B115200:
 530         case B230400:
 531                 value = B230400 / speed;
 532                 break;
 533         default:
 534                 kprintf("%s: ubsa_param: unsupported baudrate, "
 535                     "forcing default of 9600\n",
 536                     device_get_nameunit(sc->sc_ucom.sc_dev));
 537                 value = B230400 / B9600;
 538                 break;
 539         };
 540
 541         if (speed == B0) {
 542                 ubsa_flow(sc, 0, 0);
 543                 ubsa_dtr(sc, 0);
 544                 ubsa_rts(sc, 0);
 545         } else
 546                 ubsa_request(sc, UBSA_SET_BAUDRATE, value);
 547 }
 548
 549 static void
 550 ubsa_parity(struct ubsa_softc *sc, tcflag_t cflag)
 551 {
 552         int value;
 553
 554         DPRINTF(("ubsa_parity: cflag = 0x%x\n", cflag));
 555
 556         if (cflag & PARENB)
 557                 value = (cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
 558         else
 559                 value = UBSA_PARITY_NONE;
 560
 561         ubsa_request(sc, UBSA_SET_PARITY, value);
 562 }
 563
 564 static void
 565 ubsa_databits(struct ubsa_softc *sc, tcflag_t cflag)
 566 {
 567         int value;
 568
 569         DPRINTF(("ubsa_databits: cflag = 0x%x\n", cflag));
 570
 571         switch (cflag & CSIZE) {
 572         case CS5: value = 0; break;
 573         case CS6: value = 1; break;
 574         case CS7: value = 2; break;
 575         case CS8: value = 3; break;
 576         default:
 577                 kprintf("%s: ubsa_param: unsupported databits requested, "
 578                     "forcing default of 8\n",
 579                     device_get_nameunit(sc->sc_ucom.sc_dev));
 580                 value = 3;
 581         }
 582
 583         ubsa_request(sc, UBSA_SET_DATA_BITS, value);
 584 }
 585
 586 static void
 587 ubsa_stopbits(struct ubsa_softc *sc, tcflag_t cflag)
 588 {
 589         int value;
 590
 591         DPRINTF(("ubsa_stopbits: cflag = 0x%x\n", cflag));
 592
 593         value = (cflag & CSTOPB) ? 1 : 0;
 594
 595         ubsa_request(sc, UBSA_SET_STOP_BITS, value);
 596 }
 597
 598 static void
 599 ubsa_flow(struct ubsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
 600 {
 601         int value;
 602
 603         DPRINTF(("ubsa_flow: cflag = 0x%x, iflag = 0x%x\n", cflag, iflag));
 604
 605         value = 0;
 606         if (cflag & CRTSCTS)
 607                 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
 608         if (iflag & (IXON|IXOFF))
 609                 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
 610
 611         ubsa_request(sc, UBSA_SET_FLOW_CTRL, value);
 612 }
 613
 614 static int
 615 ubsa_param(void *addr, int portno, struct termios *ti)
 616 {
 617         struct ubsa_softc *sc;
 618
 619         sc = addr;
 620
 621         DPRINTF(("ubsa_param: sc = %p\n", sc));
 622
 623         ubsa_baudrate(sc, ti->c_ospeed);
 624         ubsa_parity(sc, ti->c_cflag);
 625         ubsa_databits(sc, ti->c_cflag);
 626         ubsa_stopbits(sc, ti->c_cflag);
 627         ubsa_flow(sc, ti->c_cflag, ti->c_iflag);
 628
 629         return (0);
 630 }
 631
 632 static int
 633 ubsa_open(void *addr, int portno)
 634 {
 635         struct ubsa_softc *sc;
 636         int err;
 637
 638         sc = addr;
 639         if (sc->sc_ucom.sc_dying)
 640                 return (ENXIO);
 641
 642         DPRINTF(("ubsa_open: sc = %p\n", sc));
 643
 644         if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) {
 645                 sc->sc_intr_buf = kmalloc(sc->sc_isize, M_USBDEV, M_WAITOK);
 646                 err = usbd_open_pipe_intr(sc->sc_intr_iface,
 647                     sc->sc_intr_number,
 648                     USBD_SHORT_XFER_OK,
 649                     &sc->sc_intr_pipe,
 650                     sc,
 651                     sc->sc_intr_buf,
 652                     sc->sc_isize,
 653                     ubsa_intr,
 654                     UBSA_INTR_INTERVAL);
 655                 if (err) {
 656                         kprintf("%s: cannot open interrupt pipe (addr %d)\n",
 657                             device_get_nameunit(sc->sc_ucom.sc_dev),
 658                             sc->sc_intr_number);
 659                         return (EIO);
 660                 }
 661         }
 662
 663         return (0);
 664 }
 665
 666 static void
 667 ubsa_close(void *addr, int portno)
 668 {
 669         struct ubsa_softc *sc;
 670         int err;
 671
 672         sc = addr;
 673         if (sc->sc_ucom.sc_dying)
 674                 return;
 675
 676         DPRINTF(("ubsa_close: close\n"));
 677
 678         if (sc->sc_intr_pipe != NULL) {
 679                 err = usbd_abort_pipe(sc->sc_intr_pipe);
 680                 if (err)
 681                         kprintf("%s: abort interrupt pipe failed: %s\n",
 682                             device_get_nameunit(sc->sc_ucom.sc_dev),
 683                             usbd_errstr(err));
 684                 err = usbd_close_pipe(sc->sc_intr_pipe);
 685                 if (err)
 686                         kprintf("%s: close interrupt pipe failed: %s\n",
 687                             device_get_nameunit(sc->sc_ucom.sc_dev),
 688                             usbd_errstr(err));
 689                 kfree(sc->sc_intr_buf, M_USBDEV);
 690                 sc->sc_intr_pipe = NULL;
 691         }
 692 }
 693
 694 static void
 695 ubsa_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 696 {
 697         struct ubsa_softc *sc;
 698         u_char *buf;
 699
 700         sc = priv;
 701         buf = sc->sc_intr_buf;
 702         if (sc->sc_ucom.sc_dying)
 703                 return;
 704
 705         if (status != USBD_NORMAL_COMPLETION) {
 706                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
 707                         return;
 708
 709                 DPRINTF(("%s: ubsa_intr: abnormal status: %s\n",
 710                     device_get_nameunit(sc->sc_ucom.sc_dev),
 711                     usbd_errstr(status)));
 712                 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
 713                 return;
 714         }
 715
 716         /* incidentally, Belkin adapter status bits match UART 16550 bits */
 717         sc->sc_lsr = buf[2];
 718         sc->sc_msr = buf[3];
 719
 720         DPRINTF(("%s: ubsa lsr = 0x%02x, msr = 0x%02x\n",
 721             device_get_nameunit(sc->sc_ucom.sc_dev), sc->sc_lsr, sc->sc_msr));
 722
 723         ubsa_notify(sc);
 724 }
 725
 726 /* Handle delayed events. */
 727 static void
 728 ubsa_notify(void *arg)
 729 {
 730         struct ubsa_softc *sc;
 731
 732         sc = arg;
 733         ucom_status_change(&sc->sc_ucom);
 734 }
 735
 736 static void
 737 ubsa_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
 738 {
 739         struct ubsa_softc *sc;
 740
 741         DPRINTF(("ubsa_get_status\n"));
 742
 743         sc = addr;
 744         if (lsr != NULL)
 745                 *lsr = sc->sc_lsr;
 746         if (msr != NULL)
 747                 *msr = sc->sc_msr;
 748 }