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 /* XXXimp: need to migrate from devclass_get_softc */
  48
  49 #include <sys/param.h>
  50 #include <sys/systm.h>
  51 #include <sys/proc.h>
  52 #include <sys/kernel.h>
  53 #include <sys/fcntl.h>
  54 #include <sys/ioccom.h>
  55 #include <sys/module.h>
  56 #include <sys/bus.h>
  57 #include <sys/uio.h>
  58 #include <sys/conf.h>
  59 #include <sys/syslog.h>
  60 #include <sys/sysctl.h>
  61
  62 #include <dev/usb/usb.h>
  63 #include <dev/usb/usbdi.h>
  64 #include <dev/usb/usbdi_util.h>
  65 #include "usbdevs.h"
  66 #include <dev/usb/usb_quirks.h>
  67
  68 #define TIMEOUT         hz*16   /* wait up to 16 seconds for a ready */
  69 #define STEP            hz/4
  70
  71 #define LPTPRI          (PZERO+8)
  72 #define ULPT_BSIZE      PAGE_SIZE
  73
  74 #define ULPT_READS_PER_SEC 5
  75 #define ULPT_READ_TIMO 10
  76
  77 #ifdef USB_DEBUG
  78 #define DPRINTF(x)      if (ulptdebug) printf x
  79 #define DPRINTFN(n,x)   if (ulptdebug>(n)) printf x
  80 int     ulptdebug = 0;
  81 SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW, 0, "USB ulpt");
  82 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RW,
  83            &ulptdebug, 0, "ulpt debug level");
  84 #else
  85 #define DPRINTF(x)
  86 #define DPRINTFN(n,x)
  87 #endif
  88
  89 #define UR_GET_DEVICE_ID 0
  90 #define UR_GET_PORT_STATUS 1
  91 #define UR_SOFT_RESET 2
  92
  93 #define LPS_NERR                0x08    /* printer no error */
  94 #define LPS_SELECT              0x10    /* printer selected */
  95 #define LPS_NOPAPER             0x20    /* printer out of paper */
  96 #define LPS_INVERT      (LPS_SELECT|LPS_NERR)
  97 #define LPS_MASK        (LPS_SELECT|LPS_NERR|LPS_NOPAPER)
  98
  99 struct ulpt_softc {
 100         device_t sc_dev;
 101         usbd_device_handle sc_udev;     /* device */
 102         usbd_interface_handle sc_iface; /* interface */
 103         int sc_ifaceno;
 104
 105         int sc_out;
 106         usbd_pipe_handle sc_out_pipe;   /* bulk out pipe */
 107         usbd_xfer_handle sc_out_xfer;
 108         void *sc_out_buf;
 109
 110         int sc_in;
 111         usbd_pipe_handle sc_in_pipe;    /* bulk in pipe */
 112         usbd_xfer_handle sc_in_xfer;
 113         void *sc_in_buf;
 114
 115         struct callout sc_read_callout;
 116         int sc_has_callout;
 117
 118         u_char sc_state;
 119 #define ULPT_OPEN       0x01    /* device is open */
 120 #define ULPT_OBUSY      0x02    /* printer is busy doing output */
 121 #define ULPT_INIT       0x04    /* waiting to initialize for open */
 122         u_char sc_flags;
 123 #define ULPT_NOPRIME    0x40    /* don't prime on open */
 124         u_char sc_laststatus;
 125
 126         int sc_refcnt;
 127         u_char sc_dying;
 128
 129         struct cdev *dev;
 130         struct cdev *dev_noprime;
 131 };
 132
 133 static d_open_t ulptopen;
 134 static d_close_t ulptclose;
 135 static d_write_t ulptwrite;
 136 static d_read_t ulptread;
 137 static d_ioctl_t ulptioctl;
 138
 139
 140 static struct cdevsw ulpt_cdevsw = {
 141         .d_version =    D_VERSION,
 142         .d_flags =      D_NEEDGIANT,
 143         .d_open =       ulptopen,
 144         .d_close =      ulptclose,
 145         .d_write =      ulptwrite,
 146         .d_read =       ulptread,
 147         .d_ioctl =      ulptioctl,
 148         .d_name =       "ulpt",
 149 };
 150
 151 void ulpt_disco(void *);
 152
 153 int ulpt_do_write(struct ulpt_softc *, struct uio *uio, int);
 154 int ulpt_do_read(struct ulpt_softc *, struct uio *uio, int);
 155 int ulpt_status(struct ulpt_softc *);
 156 void ulpt_reset(struct ulpt_softc *);
 157 int ulpt_statusmsg(u_char, struct ulpt_softc *);
 158 void ulpt_read_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
 159                   usbd_status status);
 160 void ulpt_tick(void *xsc);
 161
 162 #if 0
 163 void ieee1284_print_id(char *);
 164 #endif
 165
 166 #define ULPTUNIT(s)     (minor(s) & 0x1f)
 167 #define ULPTFLAGS(s)    (minor(s) & 0xe0)
 168
 169 static device_probe_t ulpt_match;
 170 static device_attach_t ulpt_attach;
 171 static device_detach_t ulpt_detach;
 172
 173 static device_method_t ulpt_methods[] = {
 174         /* Device interface */
 175         DEVMETHOD(device_probe,         ulpt_match),
 176         DEVMETHOD(device_attach,        ulpt_attach),
 177         DEVMETHOD(device_detach,        ulpt_detach),
 178
 179         { 0, 0 }
 180 };
 181
 182 static driver_t ulpt_driver = {
 183         "ulpt",
 184         ulpt_methods,
 185         sizeof(struct ulpt_softc)
 186 };
 187
 188 static devclass_t ulpt_devclass;
 189
 190 MODULE_DEPEND(umass, usb, 1, 1, 1);
 191 DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, usbd_driver_load, 0);
 192
 193 static int
 194 ulpt_match(device_t self)
 195 {
 196         struct usb_attach_arg *uaa = device_get_ivars(self);
 197         usb_interface_descriptor_t *id;
 198
 199         DPRINTFN(10,("ulpt_match\n"));
 200         if (uaa->iface == NULL)
 201                 return (UMATCH_NONE);
 202         id = usbd_get_interface_descriptor(uaa->iface);
 203         if (id != NULL &&
 204             id->bInterfaceClass == UICLASS_PRINTER &&
 205             id->bInterfaceSubClass == UISUBCLASS_PRINTER &&
 206             (id->bInterfaceProtocol == UIPROTO_PRINTER_UNI ||
 207              id->bInterfaceProtocol == UIPROTO_PRINTER_BI ||
 208              id->bInterfaceProtocol == UIPROTO_PRINTER_1284))
 209                 return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
 210         return (UMATCH_NONE);
 211 }
 212
 213 static int
 214 ulpt_attach(device_t self)
 215 {
 216         struct ulpt_softc *sc = device_get_softc(self);
 217         struct usb_attach_arg *uaa = device_get_ivars(self);
 218         usbd_device_handle dev = uaa->device;
 219         usbd_interface_handle iface = uaa->iface;
 220         usb_interface_descriptor_t *ifcd = usbd_get_interface_descriptor(iface);
 221         usb_interface_descriptor_t *id, *iend;
 222         usb_config_descriptor_t *cdesc;
 223         usbd_status err;
 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         sc->sc_dev = self;
 230
 231         /* XXX
 232          * Stepping through the alternate settings needs to be abstracted out.
 233          */
 234         cdesc = usbd_get_config_descriptor(dev);
 235         if (cdesc == NULL) {
 236                 printf("%s: failed to get configuration descriptor\n",
 237                        device_get_nameunit(sc->sc_dev));
 238                 return ENXIO;
 239         }
 240         iend = (usb_interface_descriptor_t *)
 241                    ((char *)cdesc + UGETW(cdesc->wTotalLength));
 242 #ifdef DIAGNOSTIC
 243         if (ifcd < (usb_interface_descriptor_t *)cdesc ||
 244             ifcd >= iend)
 245                 panic("ulpt: iface desc out of range");
 246 #endif
 247         /* Step through all the descriptors looking for bidir mode */
 248         for (id = ifcd, altno = 0;
 249              id < iend;
 250              id = (void *)((char *)id + id->bLength)) {
 251                 if (id->bDescriptorType == UDESC_INTERFACE &&
 252                     id->bInterfaceNumber == ifcd->bInterfaceNumber) {
 253                         if (id->bInterfaceClass == UICLASS_PRINTER &&
 254                             id->bInterfaceSubClass == UISUBCLASS_PRINTER &&
 255                             (id->bInterfaceProtocol == UIPROTO_PRINTER_BI /* ||
 256                              id->bInterfaceProtocol == UIPROTO_PRINTER_1284 */))
 257                                 goto found;
 258                         altno++;
 259                 }
 260         }
 261         id = ifcd;              /* not found, use original */
 262  found:
 263         if (id != ifcd) {
 264                 /* Found a new bidir setting */
 265                 DPRINTF(("ulpt_attach: set altno = %d\n", altno));
 266                 err = usbd_set_interface(iface, altno);
 267                 if (err) {
 268                         printf("%s: setting alternate interface failed\n",
 269                                device_get_nameunit(sc->sc_dev));
 270                         sc->sc_dying = 1;
 271                         return ENXIO;
 272                 }
 273         }
 274
 275         epcount = 0;
 276         (void)usbd_endpoint_count(iface, &epcount);
 277
 278         sc->sc_in = -1;
 279         sc->sc_out = -1;
 280         for (i = 0; i < epcount; i++) {
 281                 ed = usbd_interface2endpoint_descriptor(iface, i);
 282                 if (ed == NULL) {
 283                         printf("%s: couldn't get ep %d\n",
 284                             device_get_nameunit(sc->sc_dev), i);
 285                         return ENXIO;
 286                 }
 287                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 288                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 289                         sc->sc_in = ed->bEndpointAddress;
 290                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 291                            UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 292                         sc->sc_out = ed->bEndpointAddress;
 293                 }
 294         }
 295         if (sc->sc_out == -1) {
 296                 printf("%s: could not find bulk out endpoint\n",
 297                     device_get_nameunit(sc->sc_dev));
 298                 sc->sc_dying = 1;
 299                 return ENXIO;
 300         }
 301
 302         if (usbd_get_quirks(dev)->uq_flags & UQ_BROKEN_BIDIR) {
 303                 /* This device doesn't handle reading properly. */
 304                 sc->sc_in = -1;
 305         }
 306
 307         printf("%s: using %s-directional mode\n", device_get_nameunit(sc->sc_dev),
 308                sc->sc_in >= 0 ? "bi" : "uni");
 309
 310         DPRINTFN(10, ("ulpt_attach: bulk=%d\n", sc->sc_out));
 311
 312         sc->sc_iface = iface;
 313         sc->sc_ifaceno = id->bInterfaceNumber;
 314         sc->sc_udev = dev;
 315
 316 #if 0
 317 /*
 318  * This code is disabled because for some mysterious reason it causes
 319  * printing not to work.  But only sometimes, and mostly with
 320  * UHCI and less often with OHCI.  *sigh*
 321  */
 322         {
 323         usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
 324         usb_device_request_t req;
 325         int len, alen;
 326
 327         req.bmRequestType = UT_READ_CLASS_INTERFACE;
 328         req.bRequest = UR_GET_DEVICE_ID;
 329         USETW(req.wValue, cd->bConfigurationValue);
 330         USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting);
 331         USETW(req.wLength, sizeof devinfo - 1);
 332         err = usbd_do_request_flags(dev, &req, devinfo, USBD_SHORT_XFER_OK,
 333                   &alen, USBD_DEFAULT_TIMEOUT);
 334         if (err) {
 335                 printf("%s: cannot get device id\n", device_get_nameunit(sc->sc_dev));
 336         } else if (alen <= 2) {
 337                 printf("%s: empty device id, no printer connected?\n",
 338                        device_get_nameunit(sc->sc_dev));
 339         } else {
 340                 /* devinfo now contains an IEEE-1284 device ID */
 341                 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff);
 342                 if (len > sizeof devinfo - 3)
 343                         len = sizeof devinfo - 3;
 344                 devinfo[len] = 0;
 345                 printf("%s: device id <", device_get_nameunit(sc->sc_dev));
 346                 ieee1284_print_id(devinfo+2);
 347                 printf(">\n");
 348         }
 349         }
 350 #endif
 351
 352         sc->dev = make_dev(&ulpt_cdevsw, device_get_unit(self),
 353                 UID_ROOT, GID_OPERATOR, 0644, "ulpt%d", device_get_unit(self));
 354         sc->dev_noprime = make_dev(&ulpt_cdevsw,
 355                 device_get_unit(self)|ULPT_NOPRIME,
 356                 UID_ROOT, GID_OPERATOR, 0644, "unlpt%d", device_get_unit(self));
 357
 358         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
 359
 360         return 0;
 361 }
 362
 363
 364 static int
 365 ulpt_detach(device_t self)
 366 {
 367         struct ulpt_softc *sc = device_get_softc(self);
 368         int s;
 369
 370         DPRINTF(("ulpt_detach: sc=%p\n", sc));
 371
 372         sc->sc_dying = 1;
 373         if (sc->sc_out_pipe != NULL)
 374                 usbd_abort_pipe(sc->sc_out_pipe);
 375         if (sc->sc_in_pipe != NULL)
 376                 usbd_abort_pipe(sc->sc_in_pipe);
 377
 378         s = splusb();
 379         if (--sc->sc_refcnt >= 0) {
 380                 /* There is noone to wake, aborting the pipe is enough */
 381                 /* Wait for processes to go away. */
 382                 usb_detach_wait(sc->sc_dev);
 383         }
 384         splx(s);
 385
 386         destroy_dev(sc->dev);
 387         destroy_dev(sc->dev_noprime);
 388
 389         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
 390
 391         return (0);
 392 }
 393
 394 int
 395 ulpt_status(struct ulpt_softc *sc)
 396 {
 397         usb_device_request_t req;
 398         usbd_status err;
 399         u_char status;
 400
 401         req.bmRequestType = UT_READ_CLASS_INTERFACE;
 402         req.bRequest = UR_GET_PORT_STATUS;
 403         USETW(req.wValue, 0);
 404         USETW(req.wIndex, sc->sc_ifaceno);
 405         USETW(req.wLength, 1);
 406         err = usbd_do_request(sc->sc_udev, &req, &status);
 407         DPRINTFN(1, ("ulpt_status: status=0x%02x err=%d\n", status, err));
 408         if (!err)
 409                 return (status);
 410         else
 411                 return (0);
 412 }
 413
 414 void
 415 ulpt_reset(struct ulpt_softc *sc)
 416 {
 417         usb_device_request_t req;
 418
 419         DPRINTFN(1, ("ulpt_reset\n"));
 420         req.bRequest = UR_SOFT_RESET;
 421         USETW(req.wValue, 0);
 422         USETW(req.wIndex, sc->sc_ifaceno);
 423         USETW(req.wLength, 0);
 424
 425         /*
 426          * There was a mistake in the USB printer 1.0 spec that gave the
 427          * request type as UT_WRITE_CLASS_OTHER; it should have been
 428          * UT_WRITE_CLASS_INTERFACE.  Many printers use the old one,
 429          * so we try both.
 430          */
 431         req.bmRequestType = UT_WRITE_CLASS_OTHER;
 432         if (usbd_do_request(sc->sc_udev, &req, 0)) {    /* 1.0 */
 433                 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
 434                 (void)usbd_do_request(sc->sc_udev, &req, 0); /* 1.1 */
 435         }
 436 }
 437 #if 0
 438 static void
 439 ulpt_input(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 440 {
 441         struct ulpt_softc *sc = priv;
 442         u_int32_t count;
 443
 444         /* Don't loop on errors or 0-length input. */
 445         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 446         if (status != USBD_NORMAL_COMPLETION || count == 0)
 447                 return;
 448
 449         DPRINTFN(2,("ulpt_input: got some data\n"));
 450         /* Do it again. */
 451         if (xfer == sc->sc_in_xfer1)
 452                 usbd_transfer(sc->sc_in_xfer2);
 453         else
 454                 usbd_transfer(sc->sc_in_xfer1);
 455 }
 456 #endif
 457
 458 int ulptusein = 1;
 459
 460 /*
 461  * Reset the printer, then wait until it's selected and not busy.
 462  */
 463 int
 464 ulptopen(struct cdev *dev, int flag, int mode, struct thread *p)
 465 {
 466         u_char flags = ULPTFLAGS(dev);
 467         struct ulpt_softc *sc;
 468         usbd_status err;
 469         int error;
 470
 471         sc = devclass_get_softc(ulpt_devclass, ULPTUNIT(dev));
 472         if (sc == NULL)
 473                 return (ENXIO);
 474
 475         if (sc == NULL || sc->sc_iface == NULL || sc->sc_dying)
 476                 return (ENXIO);
 477
 478         if (sc->sc_state)
 479                 return (EBUSY);
 480
 481         sc->sc_state = ULPT_INIT;
 482         sc->sc_flags = flags;
 483         DPRINTF(("ulptopen: flags=0x%x\n", (unsigned)flags));
 484
 485 #if defined(USB_DEBUG)
 486         /* Ignoring these flags might not be a good idea */
 487         if ((flags & ~ULPT_NOPRIME) != 0)
 488                 printf("ulptopen: flags ignored: %b\n", flags,
 489                         "\20\3POS_INIT\4POS_ACK\6PRIME_OPEN\7AUTOLF\10BYPASS");
 490 #endif
 491
 492
 493         error = 0;
 494         sc->sc_refcnt++;
 495
 496         if ((flags & ULPT_NOPRIME) == 0) {
 497                 ulpt_reset(sc);
 498                 if (sc->sc_dying) {
 499                         error = ENXIO;
 500                         sc->sc_state = 0;
 501                         goto done;
 502                 }
 503         }
 504
 505         err = usbd_open_pipe(sc->sc_iface, sc->sc_out, 0, &sc->sc_out_pipe);
 506         if (err) {
 507                 error = EIO;
 508                 goto err0;
 509         }
 510         sc->sc_out_xfer = usbd_alloc_xfer(sc->sc_udev);
 511         if (sc->sc_out_xfer == NULL) {
 512                 error = ENOMEM;
 513                 goto err1;
 514         }
 515         sc->sc_out_buf = usbd_alloc_buffer(sc->sc_out_xfer, ULPT_BSIZE);
 516         if (sc->sc_out_buf == NULL) {
 517                 error = ENOMEM;
 518                 goto err2;
 519         }
 520
 521         if (ulptusein && sc->sc_in != -1) {
 522                 DPRINTF(("ulpt_open: open input pipe\n"));
 523                 err = usbd_open_pipe(sc->sc_iface, sc->sc_in,0,&sc->sc_in_pipe);
 524                 if (err) {
 525                         error = EIO;
 526                         goto err2;
 527                 }
 528                 sc->sc_in_xfer = usbd_alloc_xfer(sc->sc_udev);
 529                 if (sc->sc_in_xfer == NULL) {
 530                         error = ENOMEM;
 531                         goto err3;
 532                 }
 533                 sc->sc_in_buf = usbd_alloc_buffer(sc->sc_in_xfer, ULPT_BSIZE);
 534                 if (sc->sc_in_buf == NULL) {
 535                         error = ENOMEM;
 536                         goto err4;
 537                 }
 538
 539                 /* If it's not opened for read the set up a reader. */
 540                 if (!(flag & FREAD)) {
 541                         DPRINTF(("ulpt_open: start read callout\n"));
 542                         callout_init(&sc->sc_read_callout, 0);
 543                         callout_reset(&sc->sc_read_callout, hz/5, ulpt_tick,
 544                             sc);
 545                         sc->sc_has_callout = 1;
 546                 }
 547         }
 548
 549         sc->sc_state = ULPT_OPEN;
 550         goto done;
 551
 552  err4:
 553         usbd_free_xfer(sc->sc_in_xfer);
 554         sc->sc_in_xfer = NULL;
 555  err3:
 556         usbd_close_pipe(sc->sc_in_pipe);
 557         sc->sc_in_pipe = NULL;
 558  err2:
 559         usbd_free_xfer(sc->sc_out_xfer);
 560         sc->sc_out_xfer = NULL;
 561  err1:
 562         usbd_close_pipe(sc->sc_out_pipe);
 563         sc->sc_out_pipe = NULL;
 564  err0:
 565         sc->sc_state = 0;
 566
 567  done:
 568         if (--sc->sc_refcnt < 0)
 569                 usb_detach_wakeup(sc->sc_dev);
 570
 571         DPRINTF(("ulptopen: done, error=%d\n", error));
 572         return (error);
 573 }
 574
 575 int
 576 ulpt_statusmsg(u_char status, struct ulpt_softc *sc)
 577 {
 578         u_char new;
 579
 580         status = (status ^ LPS_INVERT) & LPS_MASK;
 581         new = status & ~sc->sc_laststatus;
 582         sc->sc_laststatus = status;
 583
 584         if (new & LPS_SELECT)
 585                 log(LOG_NOTICE, "%s: offline\n", device_get_nameunit(sc->sc_dev));
 586         else if (new & LPS_NOPAPER)
 587                 log(LOG_NOTICE, "%s: out of paper\n", device_get_nameunit(sc->sc_dev));
 588         else if (new & LPS_NERR)
 589                 log(LOG_NOTICE, "%s: output error\n", device_get_nameunit(sc->sc_dev));
 590
 591         return (status);
 592 }
 593
 594 int
 595 ulptclose(struct cdev *dev, int flag, int mode, struct thread *p)
 596 {
 597         struct ulpt_softc *sc;
 598
 599         sc = devclass_get_softc(ulpt_devclass, ULPTUNIT(dev));
 600
 601         if (sc->sc_state != ULPT_OPEN)
 602                 /* We are being forced to close before the open completed. */
 603                 return (0);
 604
 605         if (sc->sc_has_callout) {
 606                 callout_stop(&sc->sc_read_callout);
 607                 sc->sc_has_callout = 0;
 608         }
 609
 610         if (sc->sc_out_pipe != NULL) {
 611                 usbd_abort_pipe(sc->sc_out_pipe);
 612                 usbd_close_pipe(sc->sc_out_pipe);
 613                 sc->sc_out_pipe = NULL;
 614         }
 615         if (sc->sc_out_xfer != NULL) {
 616                 usbd_free_xfer(sc->sc_out_xfer);
 617                 sc->sc_out_xfer = NULL;
 618         }
 619
 620         if (sc->sc_in_pipe != NULL) {
 621                 usbd_abort_pipe(sc->sc_in_pipe);
 622                 usbd_close_pipe(sc->sc_in_pipe);
 623                 sc->sc_in_pipe = NULL;
 624         }
 625         if (sc->sc_in_xfer != NULL) {
 626                 usbd_free_xfer(sc->sc_in_xfer);
 627                 sc->sc_in_xfer = NULL;
 628         }
 629
 630         sc->sc_state = 0;
 631
 632         DPRINTF(("ulptclose: closed\n"));
 633         return (0);
 634 }
 635
 636 int
 637 ulpt_do_write(struct ulpt_softc *sc, struct uio *uio, int flags)
 638 {
 639         u_int32_t n;
 640         int error = 0;
 641         void *bufp;
 642         usbd_xfer_handle xfer;
 643         usbd_status err;
 644
 645         DPRINTF(("ulptwrite\n"));
 646         xfer = sc->sc_out_xfer;
 647         bufp = sc->sc_out_buf;
 648         while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
 649                 ulpt_statusmsg(ulpt_status(sc), sc);
 650                 error = uiomove(bufp, n, uio);
 651                 if (error)
 652                         break;
 653                 DPRINTFN(1, ("ulptwrite: transfer %d bytes\n", n));
 654                 err = usbd_bulk_transfer(xfer, sc->sc_out_pipe, USBD_NO_COPY,
 655                           USBD_NO_TIMEOUT, bufp, &n, "ulptwr");
 656                 if (err) {
 657                         DPRINTF(("ulptwrite: error=%d\n", err));
 658                         error = EIO;
 659                         break;
 660                 }
 661         }
 662
 663         return (error);
 664 }
 665
 666 int
 667 ulptwrite(struct cdev *dev, struct uio *uio, int flags)
 668 {
 669         struct ulpt_softc *sc;
 670         int error;
 671
 672         sc = devclass_get_softc(ulpt_devclass, ULPTUNIT(dev));
 673
 674         if (sc->sc_dying)
 675                 return (EIO);
 676
 677         sc->sc_refcnt++;
 678         error = ulpt_do_write(sc, uio, flags);
 679         if (--sc->sc_refcnt < 0)
 680                 usb_detach_wakeup(sc->sc_dev);
 681         return (error);
 682 }
 683
 684 int
 685 ulpt_do_read(struct ulpt_softc *sc, struct uio *uio, int flags)
 686 {
 687         u_int32_t n, on;
 688         int error = 0;
 689         void *bufp;
 690         usbd_xfer_handle xfer;
 691         usbd_status err;
 692
 693         DPRINTF(("ulptread\n"));
 694
 695         if (sc->sc_in_pipe == NULL)
 696                 return 0;
 697
 698         xfer = sc->sc_in_xfer;
 699         bufp = sc->sc_in_buf;
 700         while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
 701                 DPRINTFN(1, ("ulptread: transfer %d bytes\n", n));
 702                 on = n;
 703                 err = usbd_bulk_transfer(xfer, sc->sc_in_pipe,
 704                           USBD_NO_COPY | USBD_SHORT_XFER_OK,
 705                           USBD_NO_TIMEOUT, bufp, &n, "ulptrd");
 706                 if (err) {
 707                         DPRINTF(("ulptread: error=%d\n", err));
 708                         error = EIO;
 709                         break;
 710                 }
 711                 error = uiomove(bufp, n, uio);
 712                 if (error)
 713                         break;
 714                 if (on != n)
 715                         break;
 716         }
 717
 718         return (error);
 719 }
 720
 721 int
 722 ulptread(struct cdev *dev, struct uio *uio, int flags)
 723 {
 724         struct ulpt_softc *sc;
 725         int error;
 726
 727         sc = devclass_get_softc(ulpt_devclass, ULPTUNIT(dev));
 728
 729         if (sc->sc_dying)
 730                 return (EIO);
 731
 732         sc->sc_refcnt++;
 733         error = ulpt_do_read(sc, uio, flags);
 734         if (--sc->sc_refcnt < 0)
 735                 usb_detach_wakeup(sc->sc_dev);
 736         return (error);
 737 }
 738
 739 void
 740 ulpt_read_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
 741              usbd_status status)
 742 {
 743         usbd_status err;
 744         u_int32_t n;
 745         usbd_private_handle xsc;
 746         struct ulpt_softc *sc;
 747
 748         usbd_get_xfer_status(xfer, &xsc, NULL, &n, &err);
 749         sc = xsc;
 750
 751         DPRINTFN(1,("ulpt_read_cb: start sc=%p, err=%d n=%d\n", sc, err, n));
 752
 753 #ifdef ULPT_DEBUG
 754         if (!err && n > 0)
 755                 DPRINTF(("ulpt_tick: discarding %d bytes\n", n));
 756 #endif
 757         if (!err || err == USBD_TIMEOUT)
 758                 callout_reset(&sc->sc_read_callout, hz / ULPT_READS_PER_SEC,
 759                     ulpt_tick, sc);
 760 }
 761
 762 void
 763 ulpt_tick(void *xsc)
 764 {
 765         struct ulpt_softc *sc = xsc;
 766         usbd_status err;
 767
 768         if (sc == NULL || sc->sc_dying)
 769                 return;
 770
 771         DPRINTFN(1,("ulpt_tick: start sc=%p\n", sc));
 772
 773         usbd_setup_xfer(sc->sc_in_xfer, sc->sc_in_pipe, sc, sc->sc_in_buf,
 774                         ULPT_BSIZE, USBD_NO_COPY | USBD_SHORT_XFER_OK,
 775                         ULPT_READ_TIMO, ulpt_read_cb);
 776         err = usbd_transfer(sc->sc_in_xfer);
 777         DPRINTFN(1,("ulpt_tick: err=%d\n", err));
 778 }
 779
 780 int
 781 ulptioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *p)
 782 {
 783         int error = 0;
 784
 785         switch (cmd) {
 786         default:
 787                 error = ENODEV;
 788         }
 789
 790         return (error);
 791 }
 792
 793 #if 0
 794 /* XXX This does not belong here. */
 795 /*
 796  * Print select parts of an IEEE 1284 device ID.
 797  */
 798 void
 799 ieee1284_print_id(char *str)
 800 {
 801         char *p, *q;
 802
 803         for (p = str-1; p; p = strchr(p, ';')) {
 804                 p++;            /* skip ';' */
 805                 if (strncmp(p, "MFG:", 4) == 0 ||
 806                     strncmp(p, "MANUFACTURER:", 14) == 0 ||
 807                     strncmp(p, "MDL:", 4) == 0 ||
 808                     strncmp(p, "MODEL:", 6) == 0) {
 809                         q = strchr(p, ';');
 810                         if (q)
 811                                 printf("%.*s", (int)(q - p + 1), p);
 812                 }
 813         }
 814 }
 815 #endif