sys/dev/usb/ulpt.c

   1 /*      $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Lennart Augustsson (lennart@augustsson.net) at
   9  * Carlstedt Research & Technology.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *        This product includes software developed by the NetBSD
  22  *        Foundation, Inc. and its contributors.
  23  * 4. Neither the name of The NetBSD Foundation nor the names of its
  24  *    contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 /*
  44  * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF
  45  */
  46
  47 #include <sys/param.h>
  48 #include <sys/systm.h>
  49 #include <sys/proc.h>
  50 #include <sys/kernel.h>
  51 #include <sys/fcntl.h>
  52 #if defined(__NetBSD__) || defined(__OpenBSD__)
  53 #include <sys/device.h>
  54 #include <sys/ioctl.h>
  55 #elif defined(__FreeBSD__)
  56 #include <sys/ioccom.h>
  57 #include <sys/module.h>
  58 #include <sys/bus.h>
  59 #endif
  60 #include <sys/uio.h>
  61 #include <sys/conf.h>
  62 #include <sys/syslog.h>
  63 #include <sys/sysctl.h>
  64
  65 #include <dev/usb/usb.h>
  66 #include <dev/usb/usbdi.h>
  67 #include <dev/usb/usbdi_util.h>
  68 #include "usbdevs.h"
  69 #include <dev/usb/usb_quirks.h>
  70
  71 #define TIMEOUT         hz*16   /* wait up to 16 seconds for a ready */
  72 #define STEP            hz/4
  73
  74 #define LPTPRI          (PZERO+8)
  75 #define ULPT_BSIZE      PAGE_SIZE
  76
  77 #define ULPT_READS_PER_SEC 5
  78 #define ULPT_READ_TIMO 10
  79
  80 #ifdef USB_DEBUG
  81 #define DPRINTF(x)      if (ulptdebug) logprintf x
  82 #define DPRINTFN(n,x)   if (ulptdebug>(n)) logprintf x
  83 int     ulptdebug = 0;
  84 SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW, 0, "USB ulpt");
  85 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RW,
  86            &ulptdebug, 0, "ulpt debug level");
  87 #else
  88 #define DPRINTF(x)
  89 #define DPRINTFN(n,x)
  90 #endif
  91
  92 #define UR_GET_DEVICE_ID 0
  93 #define UR_GET_PORT_STATUS 1
  94 #define UR_SOFT_RESET 2
  95
  96 #define LPS_NERR                0x08    /* printer no error */
  97 #define LPS_SELECT              0x10    /* printer selected */
  98 #define LPS_NOPAPER             0x20    /* printer out of paper */
  99 #define LPS_INVERT      (LPS_SELECT|LPS_NERR)
 100 #define LPS_MASK        (LPS_SELECT|LPS_NERR|LPS_NOPAPER)
 101
 102 struct ulpt_softc {
 103         device_t sc_dev;
 104         usbd_device_handle sc_udev;     /* device */
 105         usbd_interface_handle sc_iface; /* interface */
 106         int sc_ifaceno;
 107
 108         int sc_out;
 109         usbd_pipe_handle sc_out_pipe;   /* bulk out pipe */
 110         usbd_xfer_handle sc_out_xfer;
 111         void *sc_out_buf;
 112
 113         int sc_in;
 114         usbd_pipe_handle sc_in_pipe;    /* bulk in pipe */
 115         usbd_xfer_handle sc_in_xfer;
 116         void *sc_in_buf;
 117
 118         usb_callout_t sc_read_callout;
 119         int sc_has_callout;
 120
 121         u_char sc_state;
 122 #define ULPT_OPEN       0x01    /* device is open */
 123 #define ULPT_OBUSY      0x02    /* printer is busy doing output */
 124 #define ULPT_INIT       0x04    /* waiting to initialize for open */
 125         u_char sc_flags;
 126 #define ULPT_NOPRIME    0x40    /* don't prime on open */
 127         u_char sc_laststatus;
 128
 129         int sc_refcnt;
 130         u_char sc_dying;
 131
 132 #if defined(__FreeBSD__)
 133         struct cdev *dev;
 134         struct cdev *dev_noprime;
 135 #endif
 136 };
 137
 138 #if defined(__NetBSD__)
 139 dev_type_open(ulptopen);
 140 dev_type_close(ulptclose);
 141 dev_type_write(ulptwrite);
 142 dev_type_read(ulptread);
 143 dev_type_ioctl(ulptioctl);
 144
 145 const struct cdevsw ulpt_cdevsw = {
 146         ulptopen, ulptclose, ulptread, ulptwrite, ulptioctl,
 147         nostop, notty, nopoll, nommap, nokqfilter,
 148 };
 149 #elif defined(__OpenBSD__)
 150 cdev_decl(ulpt);
 151 #elif defined(__FreeBSD__)
 152 static d_open_t ulptopen;
 153 static d_close_t ulptclose;
 154 static d_write_t ulptwrite;
 155 static d_read_t ulptread;
 156 static d_ioctl_t ulptioctl;
 157
 158
 159 static struct cdevsw ulpt_cdevsw = {
 160         .d_version =    D_VERSION,
 161         .d_flags =      D_NEEDGIANT,
 162         .d_open =       ulptopen,
 163         .d_close =      ulptclose,
 164         .d_write =      ulptwrite,
 165         .d_read =       ulptread,
 166         .d_ioctl =      ulptioctl,
 167         .d_name =       "ulpt",
 168 #if __FreeBSD_version < 500014
 169         .d_bmaj         -1
 170 #endif
 171 };
 172 #endif
 173
 174 void ulpt_disco(void *);
 175
 176 int ulpt_do_write(struct ulpt_softc *, struct uio *uio, int);
 177 int ulpt_do_read(struct ulpt_softc *, struct uio *uio, int);
 178 int ulpt_status(struct ulpt_softc *);
 179 void ulpt_reset(struct ulpt_softc *);
 180 int ulpt_statusmsg(u_char, struct ulpt_softc *);
 181 void ulpt_read_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
 182                   usbd_status status);
 183 void ulpt_tick(void *xsc);
 184
 185 #if 0
 186 void ieee1284_print_id(char *);
 187 #endif
 188
 189 #define ULPTUNIT(s)     (minor(s) & 0x1f)
 190 #define ULPTFLAGS(s)    (minor(s) & 0xe0)
 191
 192
 193 USB_DECLARE_DRIVER(ulpt);
 194
 195 USB_MATCH(ulpt)
 196 {
 197         USB_MATCH_START(ulpt, uaa);
 198         usb_interface_descriptor_t *id;
 199
 200         DPRINTFN(10,("ulpt_match\n"));
 201         if (uaa->iface == NULL)
 202                 return (UMATCH_NONE);
 203         id = usbd_get_interface_descriptor(uaa->iface);
 204         if (id != NULL &&
 205             id->bInterfaceClass == UICLASS_PRINTER &&
 206             id->bInterfaceSubClass == UISUBCLASS_PRINTER &&
 207             (id->bInterfaceProtocol == UIPROTO_PRINTER_UNI ||
 208              id->bInterfaceProtocol == UIPROTO_PRINTER_BI ||
 209              id->bInterfaceProtocol == UIPROTO_PRINTER_1284))
 210                 return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
 211         return (UMATCH_NONE);
 212 }
 213
 214 USB_ATTACH(ulpt)
 215 {
 216         USB_ATTACH_START(ulpt, sc, uaa);
 217         usbd_device_handle dev = uaa->device;
 218         usbd_interface_handle iface = uaa->iface;
 219         usb_interface_descriptor_t *ifcd = usbd_get_interface_descriptor(iface);
 220         usb_interface_descriptor_t *id, *iend;
 221         usb_config_descriptor_t *cdesc;
 222         usbd_status err;
 223         char devinfo[1024];
 224         usb_endpoint_descriptor_t *ed;
 225         u_int8_t epcount;
 226         int i, altno;
 227
 228         DPRINTFN(10,("ulpt_attach: sc=%p\n", sc));
 229         usbd_devinfo(uaa->device, USBD_SHOW_INTERFACE_CLASS, devinfo);
 230         USB_ATTACH_SETUP;
 231
 232         /* XXX
 233          * Stepping through the alternate settings needs to be abstracted out.
 234          */
 235         cdesc = usbd_get_config_descriptor(dev);
 236         if (cdesc == NULL) {
 237                 printf("%s: failed to get configuration descriptor\n",
 238                        device_get_nameunit(sc->sc_dev));
 239                 USB_ATTACH_ERROR_RETURN;
 240         }
 241         iend = (usb_interface_descriptor_t *)
 242                    ((char *)cdesc + UGETW(cdesc->wTotalLength));
 243 #ifdef DIAGNOSTIC
 244         if (ifcd < (usb_interface_descriptor_t *)cdesc ||
 245             ifcd >= iend)
 246                 panic("ulpt: iface desc out of range");
 247 #endif
 248         /* Step through all the descriptors looking for bidir mode */
 249         for (id = ifcd, altno = 0;
 250              id < iend;
 251              id = (void *)((char *)id + id->bLength)) {
 252                 if (id->bDescriptorType == UDESC_INTERFACE &&
 253                     id->bInterfaceNumber == ifcd->bInterfaceNumber) {
 254                         if (id->bInterfaceClass == UICLASS_PRINTER &&
 255                             id->bInterfaceSubClass == UISUBCLASS_PRINTER &&
 256                             (id->bInterfaceProtocol == UIPROTO_PRINTER_BI /* ||
 257                              id->bInterfaceProtocol == UIPROTO_PRINTER_1284 */))
 258                                 goto found;
 259                         altno++;
 260                 }
 261         }
 262         id = ifcd;              /* not found, use original */
 263  found:
 264         if (id != ifcd) {
 265                 /* Found a new bidir setting */
 266                 DPRINTF(("ulpt_attach: set altno = %d\n", altno));
 267                 err = usbd_set_interface(iface, altno);
 268                 if (err) {
 269                         printf("%s: setting alternate interface failed\n",
 270                                device_get_nameunit(sc->sc_dev));
 271                         sc->sc_dying = 1;
 272                         USB_ATTACH_ERROR_RETURN;
 273                 }
 274         }
 275
 276         epcount = 0;
 277         (void)usbd_endpoint_count(iface, &epcount);
 278
 279         sc->sc_in = -1;
 280         sc->sc_out = -1;
 281         for (i = 0; i < epcount; i++) {
 282                 ed = usbd_interface2endpoint_descriptor(iface, i);
 283                 if (ed == NULL) {
 284                         printf("%s: couldn't get ep %d\n",
 285                             device_get_nameunit(sc->sc_dev), i);
 286                         USB_ATTACH_ERROR_RETURN;
 287                 }
 288                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 289                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 290                         sc->sc_in = ed->bEndpointAddress;
 291                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 292                            UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 293                         sc->sc_out = ed->bEndpointAddress;
 294                 }
 295         }
 296         if (sc->sc_out == -1) {
 297                 printf("%s: could not find bulk out endpoint\n",
 298                     device_get_nameunit(sc->sc_dev));
 299                 sc->sc_dying = 1;
 300                 USB_ATTACH_ERROR_RETURN;
 301         }
 302
 303         if (usbd_get_quirks(dev)->uq_flags & UQ_BROKEN_BIDIR) {
 304                 /* This device doesn't handle reading properly. */
 305                 sc->sc_in = -1;
 306         }
 307
 308         printf("%s: using %s-directional mode\n", device_get_nameunit(sc->sc_dev),
 309                sc->sc_in >= 0 ? "bi" : "uni");
 310
 311         DPRINTFN(10, ("ulpt_attach: bulk=%d\n", sc->sc_out));
 312
 313         sc->sc_iface = iface;
 314         sc->sc_ifaceno = id->bInterfaceNumber;
 315         sc->sc_udev = dev;
 316
 317 #if 0
 318 /*
 319  * This code is disabled because for some mysterious reason it causes
 320  * printing not to work.  But only sometimes, and mostly with
 321  * UHCI and less often with OHCI.  *sigh*
 322  */
 323         {
 324         usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
 325         usb_device_request_t req;
 326         int len, alen;
 327
 328         req.bmRequestType = UT_READ_CLASS_INTERFACE;
 329         req.bRequest = UR_GET_DEVICE_ID;
 330         USETW(req.wValue, cd->bConfigurationValue);
 331         USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting);
 332         USETW(req.wLength, sizeof devinfo - 1);
 333         err = usbd_do_request_flags(dev, &req, devinfo, USBD_SHORT_XFER_OK,
 334                   &alen, USBD_DEFAULT_TIMEOUT);
 335         if (err) {
 336                 printf("%s: cannot get device id\n", device_get_nameunit(sc->sc_dev));
 337         } else if (alen <= 2) {
 338                 printf("%s: empty device id, no printer connected?\n",
 339                        device_get_nameunit(sc->sc_dev));
 340         } else {
 341                 /* devinfo now contains an IEEE-1284 device ID */
 342                 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff);
 343                 if (len > sizeof devinfo - 3)
 344                         len = sizeof devinfo - 3;
 345                 devinfo[len] = 0;
 346                 printf("%s: device id <", device_get_nameunit(sc->sc_dev));
 347                 ieee1284_print_id(devinfo+2);
 348                 printf(">\n");
 349         }
 350         }
 351 #endif
 352
 353 #if defined(__FreeBSD__)
 354         sc->dev = make_dev(&ulpt_cdevsw, device_get_unit(self),
 355                 UID_ROOT, GID_OPERATOR, 0644, "ulpt%d", device_get_unit(self));
 356         sc->dev_noprime = make_dev(&ulpt_cdevsw,
 357                 device_get_unit(self)|ULPT_NOPRIME,
 358                 UID_ROOT, GID_OPERATOR, 0644, "unlpt%d", device_get_unit(self));
 359 #endif
 360
 361         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
 362                            USBDEV(sc->sc_dev));
 363
 364         USB_ATTACH_SUCCESS_RETURN;
 365 }
 366
 367 #if defined(__NetBSD__) || defined(__OpenBSD__)
 368 int
 369 ulpt_activate(device_t self, enum devact act)
 370 {
 371         struct ulpt_softc *sc = (struct ulpt_softc *)self;
 372
 373         switch (act) {
 374         case DVACT_ACTIVATE:
 375                 return (EOPNOTSUPP);
 376
 377         case DVACT_DEACTIVATE:
 378                 sc->sc_dying = 1;
 379                 break;
 380         }
 381         return (0);
 382 }
 383 #endif
 384
 385 USB_DETACH(ulpt)
 386 {
 387         USB_DETACH_START(ulpt, sc);
 388         int s;
 389 #if defined(__NetBSD__) || defined(__OpenBSD__)
 390         int maj, mn;
 391 #endif
 392
 393 #if defined(__NetBSD__) || defined(__OpenBSD__)
 394         DPRINTF(("ulpt_detach: sc=%p flags=%d\n", sc, flags));
 395 #elif defined(__FreeBSD__)
 396         DPRINTF(("ulpt_detach: sc=%p\n", sc));
 397 #endif
 398
 399         sc->sc_dying = 1;
 400         if (sc->sc_out_pipe != NULL)
 401                 usbd_abort_pipe(sc->sc_out_pipe);
 402         if (sc->sc_in_pipe != NULL)
 403                 usbd_abort_pipe(sc->sc_in_pipe);
 404
 405         s = splusb();
 406         if (--sc->sc_refcnt >= 0) {
 407                 /* There is noone to wake, aborting the pipe is enough */
 408                 /* Wait for processes to go away. */
 409                 usb_detach_wait(USBDEV(sc->sc_dev));
 410         }
 411         splx(s);
 412
 413 #if defined(__NetBSD__) || defined(__OpenBSD__)
 414         /* locate the major number */
 415 #if defined(__NetBSD__)
 416         maj = cdevsw_lookup_major(&ulpt_cdevsw);
 417 #elif defined(__OpenBSD__)
 418         for (maj = 0; maj < nchrdev; maj++)
 419                 if (cdevsw[maj].d_open == ulptopen)
 420                         break;
 421 #endif
 422
 423         /* Nuke the vnodes for any open instances (calls close). */
 424         mn = self->dv_unit;
 425         vdevgone(maj, mn, mn, VCHR);
 426 #elif defined(__FreeBSD__)
 427         destroy_dev(sc->dev);
 428         destroy_dev(sc->dev_noprime);
 429 #endif
 430
 431         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
 432                            USBDEV(sc->sc_dev));
 433
 434         return (0);
 435 }
 436
 437 int
 438 ulpt_status(struct ulpt_softc *sc)
 439 {
 440         usb_device_request_t req;
 441         usbd_status err;
 442         u_char status;
 443
 444         req.bmRequestType = UT_READ_CLASS_INTERFACE;
 445         req.bRequest = UR_GET_PORT_STATUS;
 446         USETW(req.wValue, 0);
 447         USETW(req.wIndex, sc->sc_ifaceno);
 448         USETW(req.wLength, 1);
 449         err = usbd_do_request(sc->sc_udev, &req, &status);
 450         DPRINTFN(1, ("ulpt_status: status=0x%02x err=%d\n", status, err));
 451         if (!err)
 452                 return (status);
 453         else
 454                 return (0);
 455 }
 456
 457 void
 458 ulpt_reset(struct ulpt_softc *sc)
 459 {
 460         usb_device_request_t req;
 461
 462         DPRINTFN(1, ("ulpt_reset\n"));
 463         req.bRequest = UR_SOFT_RESET;
 464         USETW(req.wValue, 0);
 465         USETW(req.wIndex, sc->sc_ifaceno);
 466         USETW(req.wLength, 0);
 467
 468         /*
 469          * There was a mistake in the USB printer 1.0 spec that gave the
 470          * request type as UT_WRITE_CLASS_OTHER; it should have been
 471          * UT_WRITE_CLASS_INTERFACE.  Many printers use the old one,
 472          * so we try both.
 473          */
 474         req.bmRequestType = UT_WRITE_CLASS_OTHER;
 475         if (usbd_do_request(sc->sc_udev, &req, 0)) {    /* 1.0 */
 476                 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
 477                 (void)usbd_do_request(sc->sc_udev, &req, 0); /* 1.1 */
 478         }
 479 }
 480 #if 0
 481 static void
 482 ulpt_input(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 483 {
 484         struct ulpt_softc *sc = priv;
 485         u_int32_t count;
 486
 487         /* Don't loop on errors or 0-length input. */
 488         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 489         if (status != USBD_NORMAL_COMPLETION || count == 0)
 490                 return;
 491
 492         DPRINTFN(2,("ulpt_input: got some data\n"));
 493         /* Do it again. */
 494         if (xfer == sc->sc_in_xfer1)
 495                 usbd_transfer(sc->sc_in_xfer2);
 496         else
 497                 usbd_transfer(sc->sc_in_xfer1);
 498 }
 499 #endif
 500
 501 int ulptusein = 1;
 502
 503 /*
 504  * Reset the printer, then wait until it's selected and not busy.
 505  */
 506 int
 507 ulptopen(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
 508 {
 509         u_char flags = ULPTFLAGS(dev);
 510         struct ulpt_softc *sc;
 511         usbd_status err;
 512         int error;
 513
 514         USB_GET_SC_OPEN(ulpt, ULPTUNIT(dev), sc);
 515
 516         if (sc == NULL || sc->sc_iface == NULL || sc->sc_dying)
 517                 return (ENXIO);
 518
 519         if (sc->sc_state)
 520                 return (EBUSY);
 521
 522         sc->sc_state = ULPT_INIT;
 523         sc->sc_flags = flags;
 524         DPRINTF(("ulptopen: flags=0x%x\n", (unsigned)flags));
 525
 526 #if defined(USB_DEBUG) && defined(__FreeBSD__)
 527         /* Ignoring these flags might not be a good idea */
 528         if ((flags & ~ULPT_NOPRIME) != 0)
 529                 printf("ulptopen: flags ignored: %b\n", flags,
 530                         "\20\3POS_INIT\4POS_ACK\6PRIME_OPEN\7AUTOLF\10BYPASS");
 531 #endif
 532
 533
 534         error = 0;
 535         sc->sc_refcnt++;
 536
 537         if ((flags & ULPT_NOPRIME) == 0) {
 538                 ulpt_reset(sc);
 539                 if (sc->sc_dying) {
 540                         error = ENXIO;
 541                         sc->sc_state = 0;
 542                         goto done;
 543                 }
 544         }
 545
 546         err = usbd_open_pipe(sc->sc_iface, sc->sc_out, 0, &sc->sc_out_pipe);
 547         if (err) {
 548                 error = EIO;
 549                 goto err0;
 550         }
 551         sc->sc_out_xfer = usbd_alloc_xfer(sc->sc_udev);
 552         if (sc->sc_out_xfer == NULL) {
 553                 error = ENOMEM;
 554                 goto err1;
 555         }
 556         sc->sc_out_buf = usbd_alloc_buffer(sc->sc_out_xfer, ULPT_BSIZE);
 557         if (sc->sc_out_buf == NULL) {
 558                 error = ENOMEM;
 559                 goto err2;
 560         }
 561
 562         if (ulptusein && sc->sc_in != -1) {
 563                 DPRINTF(("ulpt_open: open input pipe\n"));
 564                 err = usbd_open_pipe(sc->sc_iface, sc->sc_in,0,&sc->sc_in_pipe);
 565                 if (err) {
 566                         error = EIO;
 567                         goto err2;
 568                 }
 569                 sc->sc_in_xfer = usbd_alloc_xfer(sc->sc_udev);
 570                 if (sc->sc_in_xfer == NULL) {
 571                         error = ENOMEM;
 572                         goto err3;
 573                 }
 574                 sc->sc_in_buf = usbd_alloc_buffer(sc->sc_in_xfer, ULPT_BSIZE);
 575                 if (sc->sc_in_buf == NULL) {
 576                         error = ENOMEM;
 577                         goto err4;
 578                 }
 579
 580                 /* If it's not opened for read the set up a reader. */
 581                 if (!(flag & FREAD)) {
 582                         DPRINTF(("ulpt_open: start read callout\n"));
 583                         usb_callout_init(sc->sc_read_callout);
 584                         usb_callout(sc->sc_read_callout, hz/5, ulpt_tick, sc);
 585                         sc->sc_has_callout = 1;
 586                 }
 587         }
 588
 589         sc->sc_state = ULPT_OPEN;
 590         goto done;
 591
 592  err4:
 593         usbd_free_xfer(sc->sc_in_xfer);
 594         sc->sc_in_xfer = NULL;
 595  err3:
 596         usbd_close_pipe(sc->sc_in_pipe);
 597         sc->sc_in_pipe = NULL;
 598  err2:
 599         usbd_free_xfer(sc->sc_out_xfer);
 600         sc->sc_out_xfer = NULL;
 601  err1:
 602         usbd_close_pipe(sc->sc_out_pipe);
 603         sc->sc_out_pipe = NULL;
 604  err0:
 605         sc->sc_state = 0;
 606
 607  done:
 608         if (--sc->sc_refcnt < 0)
 609                 usb_detach_wakeup(USBDEV(sc->sc_dev));
 610
 611         DPRINTF(("ulptopen: done, error=%d\n", error));
 612         return (error);
 613 }
 614
 615 int
 616 ulpt_statusmsg(u_char status, struct ulpt_softc *sc)
 617 {
 618         u_char new;
 619
 620         status = (status ^ LPS_INVERT) & LPS_MASK;
 621         new = status & ~sc->sc_laststatus;
 622         sc->sc_laststatus = status;
 623
 624         if (new & LPS_SELECT)
 625                 log(LOG_NOTICE, "%s: offline\n", device_get_nameunit(sc->sc_dev));
 626         else if (new & LPS_NOPAPER)
 627                 log(LOG_NOTICE, "%s: out of paper\n", device_get_nameunit(sc->sc_dev));
 628         else if (new & LPS_NERR)
 629                 log(LOG_NOTICE, "%s: output error\n", device_get_nameunit(sc->sc_dev));
 630
 631         return (status);
 632 }
 633
 634 int
 635 ulptclose(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
 636 {
 637         struct ulpt_softc *sc;
 638
 639         USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
 640
 641         if (sc->sc_state != ULPT_OPEN)
 642                 /* We are being forced to close before the open completed. */
 643                 return (0);
 644
 645         if (sc->sc_has_callout) {
 646                 usb_uncallout(sc->sc_read_callout, ulpt_tick, sc);
 647                 sc->sc_has_callout = 0;
 648         }
 649
 650         if (sc->sc_out_pipe != NULL) {
 651                 usbd_abort_pipe(sc->sc_out_pipe);
 652                 usbd_close_pipe(sc->sc_out_pipe);
 653                 sc->sc_out_pipe = NULL;
 654         }
 655         if (sc->sc_out_xfer != NULL) {
 656                 usbd_free_xfer(sc->sc_out_xfer);
 657                 sc->sc_out_xfer = NULL;
 658         }
 659
 660         if (sc->sc_in_pipe != NULL) {
 661                 usbd_abort_pipe(sc->sc_in_pipe);
 662                 usbd_close_pipe(sc->sc_in_pipe);
 663                 sc->sc_in_pipe = NULL;
 664         }
 665         if (sc->sc_in_xfer != NULL) {
 666                 usbd_free_xfer(sc->sc_in_xfer);
 667                 sc->sc_in_xfer = NULL;
 668         }
 669
 670         sc->sc_state = 0;
 671
 672         DPRINTF(("ulptclose: closed\n"));
 673         return (0);
 674 }
 675
 676 int
 677 ulpt_do_write(struct ulpt_softc *sc, struct uio *uio, int flags)
 678 {
 679         u_int32_t n;
 680         int error = 0;
 681         void *bufp;
 682         usbd_xfer_handle xfer;
 683         usbd_status err;
 684
 685         DPRINTF(("ulptwrite\n"));
 686         xfer = sc->sc_out_xfer;
 687         bufp = sc->sc_out_buf;
 688         while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
 689                 ulpt_statusmsg(ulpt_status(sc), sc);
 690                 error = uiomove(bufp, n, uio);
 691                 if (error)
 692                         break;
 693                 DPRINTFN(1, ("ulptwrite: transfer %d bytes\n", n));
 694                 err = usbd_bulk_transfer(xfer, sc->sc_out_pipe, USBD_NO_COPY,
 695                           USBD_NO_TIMEOUT, bufp, &n, "ulptwr");
 696                 if (err) {
 697                         DPRINTF(("ulptwrite: error=%d\n", err));
 698                         error = EIO;
 699                         break;
 700                 }
 701         }
 702
 703         return (error);
 704 }
 705
 706 int
 707 ulptwrite(struct cdev *dev, struct uio *uio, int flags)
 708 {
 709         struct ulpt_softc *sc;
 710         int error;
 711
 712         USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
 713
 714         if (sc->sc_dying)
 715                 return (EIO);
 716
 717         sc->sc_refcnt++;
 718         error = ulpt_do_write(sc, uio, flags);
 719         if (--sc->sc_refcnt < 0)
 720                 usb_detach_wakeup(USBDEV(sc->sc_dev));
 721         return (error);
 722 }
 723
 724 int
 725 ulpt_do_read(struct ulpt_softc *sc, struct uio *uio, int flags)
 726 {
 727         u_int32_t n, on;
 728         int error = 0;
 729         void *bufp;
 730         usbd_xfer_handle xfer;
 731         usbd_status err;
 732
 733         DPRINTF(("ulptread\n"));
 734
 735         if (sc->sc_in_pipe == NULL)
 736                 return 0;
 737
 738         xfer = sc->sc_in_xfer;
 739         bufp = sc->sc_in_buf;
 740         while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
 741                 DPRINTFN(1, ("ulptread: transfer %d bytes\n", n));
 742                 on = n;
 743                 err = usbd_bulk_transfer(xfer, sc->sc_in_pipe,
 744                           USBD_NO_COPY | USBD_SHORT_XFER_OK,
 745                           USBD_NO_TIMEOUT, bufp, &n, "ulptrd");
 746                 if (err) {
 747                         DPRINTF(("ulptread: error=%d\n", err));
 748                         error = EIO;
 749                         break;
 750                 }
 751                 error = uiomove(bufp, n, uio);
 752                 if (error)
 753                         break;
 754                 if (on != n)
 755                         break;
 756         }
 757
 758         return (error);
 759 }
 760
 761 int
 762 ulptread(struct cdev *dev, struct uio *uio, int flags)
 763 {
 764         struct ulpt_softc *sc;
 765         int error;
 766
 767         USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
 768
 769         if (sc->sc_dying)
 770                 return (EIO);
 771
 772         sc->sc_refcnt++;
 773         error = ulpt_do_read(sc, uio, flags);
 774         if (--sc->sc_refcnt < 0)
 775                 usb_detach_wakeup(USBDEV(sc->sc_dev));
 776         return (error);
 777 }
 778
 779 void
 780 ulpt_read_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
 781              usbd_status status)
 782 {
 783         usbd_status err;
 784         u_int32_t n;
 785         usbd_private_handle xsc;
 786         struct ulpt_softc *sc;
 787
 788         usbd_get_xfer_status(xfer, &xsc, NULL, &n, &err);
 789         sc = xsc;
 790
 791         DPRINTFN(1,("ulpt_read_cb: start sc=%p, err=%d n=%d\n", sc, err, n));
 792
 793 #ifdef ULPT_DEBUG
 794         if (!err && n > 0)
 795                 DPRINTF(("ulpt_tick: discarding %d bytes\n", n));
 796 #endif
 797         if (!err || err == USBD_TIMEOUT)
 798                 usb_callout(sc->sc_read_callout, hz / ULPT_READS_PER_SEC,
 799                             ulpt_tick, sc);
 800 }
 801
 802 void
 803 ulpt_tick(void *xsc)
 804 {
 805         struct ulpt_softc *sc = xsc;
 806         usbd_status err;
 807
 808         if (sc == NULL || sc->sc_dying)
 809                 return;
 810
 811         DPRINTFN(1,("ulpt_tick: start sc=%p\n", sc));
 812
 813         usbd_setup_xfer(sc->sc_in_xfer, sc->sc_in_pipe, sc, sc->sc_in_buf,
 814                         ULPT_BSIZE, USBD_NO_COPY | USBD_SHORT_XFER_OK,
 815                         ULPT_READ_TIMO, ulpt_read_cb);
 816         err = usbd_transfer(sc->sc_in_xfer);
 817         DPRINTFN(1,("ulpt_tick: err=%d\n", err));
 818 }
 819
 820 int
 821 ulptioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
 822 {
 823         int error = 0;
 824
 825         switch (cmd) {
 826         default:
 827                 error = ENODEV;
 828         }
 829
 830         return (error);
 831 }
 832
 833 #if 0
 834 /* XXX This does not belong here. */
 835 /*
 836  * Print select parts of an IEEE 1284 device ID.
 837  */
 838 void
 839 ieee1284_print_id(char *str)
 840 {
 841         char *p, *q;
 842
 843         for (p = str-1; p; p = strchr(p, ';')) {
 844                 p++;            /* skip ';' */
 845                 if (strncmp(p, "MFG:", 4) == 0 ||
 846                     strncmp(p, "MANUFACTURER:", 14) == 0 ||
 847                     strncmp(p, "MDL:", 4) == 0 ||
 848                     strncmp(p, "MODEL:", 6) == 0) {
 849                         q = strchr(p, ';');
 850                         if (q)
 851                                 printf("%.*s", (int)(q - p + 1), p);
 852                 }
 853         }
 854 }
 855 #endif
 856
 857 #if defined(__FreeBSD__)
 858 DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, usbd_driver_load, 0);
 859 #endif