sys/dev/usbmisc/uscanner/uscanner.c

   1 /*
   2  * $NetBSD: uscanner.c,v 1.30 2002/07/11 21:14:36 augustss Exp $
   3  * $FreeBSD: src/sys/dev/usb/uscanner.c,v 1.48 2003/12/22 19:58:27 sanpei Exp $
   4  * $DragonFly: src/sys/dev/usbmisc/uscanner/uscanner.c,v 1.22 2007/07/02 23:52:05 hasso Exp $
   5  */
   6
   7 /* Also already merged from NetBSD:
   8  *      $NetBSD: uscanner.c,v 1.33 2002/09/23 05:51:24 simonb Exp $
   9  */
  10
  11 /*
  12  * Copyright (c) 2000 The NetBSD Foundation, Inc.
  13  * All rights reserved.
  14  *
  15  * This code is derived from software contributed to The NetBSD Foundation
  16  * by Lennart Augustsson (lennart@augustsson.net) at
  17  * Carlstedt Research & Technology
  18  * and Nick Hibma (n_hibma@qubesoft.com).
  19  *
  20  * Redistribution and use in source and binary forms, with or without
  21  * modification, are permitted provided that the following conditions
  22  * are met:
  23  * 1. Redistributions of source code must retain the above copyright
  24  *    notice, this list of conditions and the following disclaimer.
  25  * 2. Redistributions in binary form must reproduce the above copyright
  26  *    notice, this list of conditions and the following disclaimer in the
  27  *    documentation and/or other materials provided with the distribution.
  28  * 3. All advertising materials mentioning features or use of this software
  29  *    must display the following acknowledgement:
  30  *        This product includes software developed by the NetBSD
  31  *        Foundation, Inc. and its contributors.
  32  * 4. Neither the name of The NetBSD Foundation nor the names of its
  33  *    contributors may be used to endorse or promote products derived
  34  *    from this software without specific prior written permission.
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  37  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  38  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  40  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  41  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  42  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  43  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  44  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  46  * POSSIBILITY OF SUCH DAMAGE.
  47  */
  48
  49
  50 #include <sys/param.h>
  51 #include <sys/systm.h>
  52 #include <sys/kernel.h>
  53 #include <sys/malloc.h>
  54 #include <sys/module.h>
  55 #include <sys/bus.h>
  56 #include <sys/conf.h>
  57 #include <sys/fcntl.h>
  58 #include <sys/filio.h>
  59 #include <sys/tty.h>
  60 #include <sys/file.h>
  61 #include <sys/select.h>
  62 #include <sys/proc.h>
  63 #include <sys/vnode.h>
  64 #include <sys/poll.h>
  65 #include <sys/conf.h>
  66 #include <sys/sysctl.h>
  67 #include <sys/thread2.h>
  68
  69 #include <bus/usb/usb.h>
  70 #include <bus/usb/usbdi.h>
  71 #include <bus/usb/usbdi_util.h>
  72
  73 #include <bus/usb/usbdevs.h>
  74
  75 #ifdef USB_DEBUG
  76 #define DPRINTF(x)      if (uscannerdebug) kprintf x
  77 #define DPRINTFN(n,x)   if (uscannerdebug>(n)) kprintf x
  78 int     uscannerdebug = 0;
  79 SYSCTL_NODE(_hw_usb, OID_AUTO, uscanner, CTLFLAG_RW, 0, "USB uscanner");
  80 SYSCTL_INT(_hw_usb_uscanner, OID_AUTO, debug, CTLFLAG_RW,
  81            &uscannerdebug, 0, "uscanner debug level");
  82 #else
  83 #define DPRINTF(x)
  84 #define DPRINTFN(n,x)
  85 #endif
  86
  87 struct uscan_info {
  88         struct usb_devno devno;
  89         u_int flags;
  90 #define USC_KEEP_OPEN 1
  91 };
  92
  93 /* Table of scanners that may work with this driver. */
  94 static const struct uscan_info uscanner_devs[] = {
  95   /* Acer Peripherals */
  96  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_320U }, 0 },
  97  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_640U }, 0 },
  98  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_620U }, 0 },
  99  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_C310U }, 0 },
 100
 101   /* AGFA */
 102  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1236U }, 0 },
 103  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1212U }, 0 },
 104  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1212U2 }, 0 },
 105  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANTOUCH }, 0 },
 106  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE40 }, 0 },
 107  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE50 }, 0 },
 108  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE20 }, 0 },
 109  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE25 }, 0 },
 110  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE26 }, 0 },
 111  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE52 }, 0 },
 112
 113   /* Avision */
 114  {{ USB_VENDOR_AVISION, USB_PRODUCT_AVISION_1200U }, 0 },
 115
 116   /* Canon */
 117  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N656U }, 0 },
 118  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N676U }, 0 },
 119  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_D660U }, 0 },
 120
 121   /* Kye */
 122  {{ USB_VENDOR_KYE, USB_PRODUCT_KYE_VIVIDPRO }, 0 },
 123
 124   /* HP */
 125  {{ USB_VENDOR_HP, USB_PRODUCT_HP_2200C }, 0 },
 126  {{ USB_VENDOR_HP, USB_PRODUCT_HP_3300C }, 0 },
 127  {{ USB_VENDOR_HP, USB_PRODUCT_HP_3400CSE }, 0 },
 128  {{ USB_VENDOR_HP, USB_PRODUCT_HP_4100C }, 0 },
 129  {{ USB_VENDOR_HP, USB_PRODUCT_HP_4200C }, 0 },
 130  {{ USB_VENDOR_HP, USB_PRODUCT_HP_4300C }, 0 },
 131  {{ USB_VENDOR_HP, USB_PRODUCT_HP_S20 }, 0 },
 132  {{ USB_VENDOR_HP, USB_PRODUCT_HP_5200C }, 0 },
 133  {{ USB_VENDOR_HP, USB_PRODUCT_HP_5300C }, 0 },
 134  {{ USB_VENDOR_HP, USB_PRODUCT_HP_5400C }, 0 },
 135  {{ USB_VENDOR_HP, USB_PRODUCT_HP_6200C }, 0 },
 136  {{ USB_VENDOR_HP, USB_PRODUCT_HP_6300C }, 0 },
 137
 138   /* Microtek */
 139  {{ USB_VENDOR_SCANLOGIC, USB_PRODUCT_SCANLOGIC_336CX }, 0 },
 140  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_X6U }, 0 },
 141  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_336CX }, 0 },
 142  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_336CX2 }, 0 },
 143  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_C6 }, 0 },
 144  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6USL }, 0 },
 145  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6USL2 }, 0 },
 146  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6UL }, 0 },
 147
 148   /* Minolta */
 149  {{ USB_VENDOR_MINOLTA, USB_PRODUCT_MINOLTA_5400 }, 0 },
 150
 151   /* Mustek */
 152  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200CU }, 0 },
 153  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_BEARPAW1200F }, 0 },
 154  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_BEARPAW1200TA }, 0 },
 155  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_600USB }, 0 },
 156  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_600CU }, 0 },
 157  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200USB }, 0 },
 158  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200UB }, 0 },
 159  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200USBPLUS }, 0 },
 160  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200CUPLUS }, 0 },
 161
 162   /* National */
 163  {{ USB_VENDOR_NATIONAL, USB_PRODUCT_NATIONAL_BEARPAW1200 }, 0 },
 164  {{ USB_VENDOR_NATIONAL, USB_PRODUCT_NATIONAL_BEARPAW2400 }, 0 },
 165
 166   /* Primax */
 167  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2X300 }, 0 },
 168  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E300 }, 0 },
 169  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2300 }, 0 },
 170  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E3002 }, 0 },
 171  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_9600 }, 0 },
 172  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_600U }, 0 },
 173  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_6200 }, 0 },
 174  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_19200 }, 0 },
 175  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_1200U }, 0 },
 176  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G600 }, 0 },
 177  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_636I }, 0 },
 178  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2600 }, 0 },
 179  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E600 }, 0 },
 180
 181   /* Epson */
 182  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_636 }, 0 },
 183  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_610 }, 0 },
 184  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1200 }, 0 },
 185  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1240 }, 0 },
 186  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1250 }, 0 },
 187  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1600 }, 0 },
 188  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1640 }, 0 },
 189  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_640U }, 0 },
 190  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1650 }, 0 },
 191  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1660 }, 0 },
 192  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1260 }, 0 },
 193  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_GT9700F }, USC_KEEP_OPEN },
 194  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_GT9300UF }, 0 },
 195
 196   /* UMAX */
 197  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA1220U }, 0 },
 198  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA1236U }, 0 },
 199  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2000U }, 0 },
 200  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2100U }, 0 },
 201  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2200U }, 0 },
 202  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA3400 }, 0 },
 203
 204   /* Visioneer */
 205  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_3000 }, 0 },
 206  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_5300 }, 0 },
 207  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_7600 }, 0 },
 208  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_6100 }, 0 },
 209  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_6200 }, 0 },
 210  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_8100 }, 0 },
 211  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_8600 }, 0 },
 212
 213   /* Ultima */
 214  {{ USB_VENDOR_ULTIMA, USB_PRODUCT_ULTIMA_1200UBPLUS }, 0 },
 215
 216 };
 217 #define uscanner_lookup(v, p) ((const struct uscan_info *)usb_lookup(uscanner_devs, v, p))
 218
 219 #define USCANNER_BUFFERSIZE     1024
 220
 221 struct uscanner_softc {
 222         device_t                sc_dev;         /* base device */
 223         usbd_device_handle      sc_udev;
 224         usbd_interface_handle   sc_iface;
 225
 226         u_int                   sc_dev_flags;
 227
 228         usbd_pipe_handle        sc_bulkin_pipe;
 229         int                     sc_bulkin;
 230         usbd_xfer_handle        sc_bulkin_xfer;
 231         void                    *sc_bulkin_buffer;
 232         int                     sc_bulkin_bufferlen;
 233         int                     sc_bulkin_datalen;
 234
 235         usbd_pipe_handle        sc_bulkout_pipe;
 236         int                     sc_bulkout;
 237         usbd_xfer_handle        sc_bulkout_xfer;
 238         void                    *sc_bulkout_buffer;
 239         int                     sc_bulkout_bufferlen;
 240         int                     sc_bulkout_datalen;
 241
 242         u_char                  sc_state;
 243 #define USCANNER_OPEN           0x01    /* opened */
 244
 245         int                     sc_refcnt;
 246         u_char                  sc_dying;
 247 };
 248
 249 d_open_t  uscanneropen;
 250 d_close_t uscannerclose;
 251 d_read_t  uscannerread;
 252 d_write_t uscannerwrite;
 253 d_poll_t  uscannerpoll;
 254
 255 #define USCANNER_CDEV_MAJOR     156
 256
 257 static struct dev_ops uscanner_ops = {
 258         { "uscanner", USCANNER_CDEV_MAJOR, 0 },
 259         .d_open =       uscanneropen,
 260         .d_close =      uscannerclose,
 261         .d_read =       uscannerread,
 262         .d_write =      uscannerwrite,
 263         .d_poll =       uscannerpoll,
 264 };
 265
 266 static int uscanner_do_read(struct uscanner_softc *, struct uio *, int);
 267 static int uscanner_do_write(struct uscanner_softc *, struct uio *, int);
 268 static void uscanner_do_close(struct uscanner_softc *);
 269
 270 #define USCANNERUNIT(n) (minor(n))
 271
 272 static device_probe_t uscanner_match;
 273 static device_attach_t uscanner_attach;
 274 static device_detach_t uscanner_detach;
 275
 276 static devclass_t uscanner_devclass;
 277
 278 static kobj_method_t uscanner_methods[] = {
 279         DEVMETHOD(device_probe, uscanner_match),
 280         DEVMETHOD(device_attach, uscanner_attach),
 281         DEVMETHOD(device_detach, uscanner_detach),
 282         {0,0}
 283 };
 284
 285 static driver_t uscanner_driver = {
 286         "uscanner",
 287         uscanner_methods,
 288         sizeof(struct uscanner_softc)
 289 };
 290
 291 MODULE_DEPEND(uscanner, usb, 1, 1, 1);
 292
 293 static int
 294 uscanner_match(device_t self)
 295 {
 296         struct usb_attach_arg *uaa = device_get_ivars(self);
 297
 298         if (uaa->iface != NULL)
 299                 return UMATCH_NONE;
 300
 301         return (uscanner_lookup(uaa->vendor, uaa->product) != NULL ?
 302                 UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
 303 }
 304
 305 static int
 306 uscanner_attach(device_t self)
 307 {
 308         struct uscanner_softc *sc = device_get_softc(self);
 309         struct usb_attach_arg *uaa = device_get_ivars(self);
 310         usb_interface_descriptor_t *id = 0;
 311         usb_endpoint_descriptor_t *ed, *ed_bulkin = NULL, *ed_bulkout = NULL;
 312         char devinfo[1024];
 313         int i;
 314         usbd_status err;
 315
 316         usbd_devinfo(uaa->device, 0, devinfo);
 317         sc->sc_dev = self;
 318         device_set_desc_copy(self, devinfo);
 319         kprintf("%s: %s\n", device_get_nameunit(sc->sc_dev), devinfo);
 320
 321         sc->sc_dev_flags = uscanner_lookup(uaa->vendor, uaa->product)->flags;
 322
 323         sc->sc_udev = uaa->device;
 324
 325         err = usbd_set_config_no(uaa->device, 1, 1); /* XXX */
 326         if (err) {
 327                 kprintf("%s: setting config no failed\n",
 328                     device_get_nameunit(sc->sc_dev));
 329                 return ENXIO;
 330         }
 331
 332         /* XXX We only check the first interface */
 333         err = usbd_device2interface_handle(sc->sc_udev, 0, &sc->sc_iface);
 334         if (!err && sc->sc_iface)
 335             id = usbd_get_interface_descriptor(sc->sc_iface);
 336         if (err || id == 0) {
 337                 kprintf("%s: could not get interface descriptor, err=%d,id=%p\n",
 338                        device_get_nameunit(sc->sc_dev), err, id);
 339                 return ENXIO;
 340         }
 341
 342         /* Find the two first bulk endpoints */
 343         for (i = 0 ; i < id->bNumEndpoints; i++) {
 344                 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
 345                 if (ed == 0) {
 346                         kprintf("%s: could not read endpoint descriptor\n",
 347                                device_get_nameunit(sc->sc_dev));
 348                         return ENXIO;
 349                 }
 350
 351                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
 352                     && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
 353                         ed_bulkin = ed;
 354                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT
 355                     && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
 356                         ed_bulkout = ed;
 357                 }
 358
 359                 if (ed_bulkin && ed_bulkout)    /* found all we need */
 360                         break;
 361         }
 362
 363         /* Verify that we goething sensible */
 364         if (ed_bulkin == NULL || ed_bulkout == NULL) {
 365                 kprintf("%s: bulk-in and/or bulk-out endpoint not found\n",
 366                         device_get_nameunit(sc->sc_dev));
 367                 return ENXIO;
 368         }
 369
 370         sc->sc_bulkin = ed_bulkin->bEndpointAddress;
 371         sc->sc_bulkout = ed_bulkout->bEndpointAddress;
 372
 373         /* the main device, ctrl endpoint */
 374         dev_ops_add(&uscanner_ops, -1, device_get_unit(sc->sc_dev));
 375         make_dev(&uscanner_ops, device_get_unit(sc->sc_dev),
 376                 UID_ROOT, GID_OPERATOR, 0644, "%s", device_get_nameunit(sc->sc_dev));
 377
 378         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
 379                            sc->sc_dev);
 380
 381         return 0;
 382 }
 383
 384 int
 385 uscanneropen(struct dev_open_args *ap)
 386 {
 387         cdev_t dev = ap->a_head.a_dev;
 388         struct uscanner_softc *sc;
 389         int unit = USCANNERUNIT(dev);
 390         usbd_status err;
 391
 392         sc = devclass_get_softc(uscanner_devclass, unit);
 393         if (sc == NULL)
 394                 return (ENXIO);
 395
 396         DPRINTFN(5, ("uscanneropen: flag=%d, mode=%d, unit=%d\n",
 397                      ap->a_oflags, ap->a_devtype, unit));
 398
 399         if (sc->sc_dying)
 400                 return (ENXIO);
 401
 402         if (sc->sc_state & USCANNER_OPEN)
 403                 return (EBUSY);
 404
 405         sc->sc_state |= USCANNER_OPEN;
 406
 407         sc->sc_bulkin_buffer = kmalloc(USCANNER_BUFFERSIZE, M_USBDEV, M_WAITOK);
 408         sc->sc_bulkout_buffer = kmalloc(USCANNER_BUFFERSIZE, M_USBDEV, M_WAITOK);
 409         /* No need to check buffers for NULL since we have WAITOK */
 410
 411         sc->sc_bulkin_bufferlen = USCANNER_BUFFERSIZE;
 412         sc->sc_bulkout_bufferlen = USCANNER_BUFFERSIZE;
 413
 414         /* We have decided on which endpoints to use, now open the pipes */
 415         if (sc->sc_bulkin_pipe == NULL) {
 416                 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin,
 417                                      USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe);
 418                 if (err) {
 419                         kprintf("%s: cannot open bulk-in pipe (addr %d)\n",
 420                                device_get_nameunit(sc->sc_dev), sc->sc_bulkin);
 421                         uscanner_do_close(sc);
 422                         return (EIO);
 423                 }
 424         }
 425         if (sc->sc_bulkout_pipe == NULL) {
 426                 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout,
 427                                      USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
 428                 if (err) {
 429                         kprintf("%s: cannot open bulk-out pipe (addr %d)\n",
 430                                device_get_nameunit(sc->sc_dev), sc->sc_bulkout);
 431                         uscanner_do_close(sc);
 432                         return (EIO);
 433                 }
 434         }
 435
 436         sc->sc_bulkin_xfer = usbd_alloc_xfer(sc->sc_udev);
 437         if (sc->sc_bulkin_xfer == NULL) {
 438                 uscanner_do_close(sc);
 439                 return (ENOMEM);
 440         }
 441         sc->sc_bulkout_xfer = usbd_alloc_xfer(sc->sc_udev);
 442         if (sc->sc_bulkout_xfer == NULL) {
 443                 uscanner_do_close(sc);
 444                 return (ENOMEM);
 445         }
 446
 447         return (0);     /* success */
 448 }
 449
 450 int
 451 uscannerclose(struct dev_close_args *ap)
 452 {
 453         cdev_t dev = ap->a_head.a_dev;
 454         struct uscanner_softc *sc;
 455
 456         sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
 457
 458         DPRINTFN(5, ("uscannerclose: flag=%d, mode=%d, unit=%d\n",
 459                      ap->a_fflag, ap->a_devtype, USCANNERUNIT(dev)));
 460
 461 #ifdef DIAGNOSTIC
 462         if (!(sc->sc_state & USCANNER_OPEN)) {
 463                 kprintf("uscannerclose: not open\n");
 464                 return (EINVAL);
 465         }
 466 #endif
 467
 468         uscanner_do_close(sc);
 469
 470         return (0);
 471 }
 472
 473 void
 474 uscanner_do_close(struct uscanner_softc *sc)
 475 {
 476         if (sc->sc_bulkin_xfer) {
 477                 usbd_free_xfer(sc->sc_bulkin_xfer);
 478                 sc->sc_bulkin_xfer = NULL;
 479         }
 480         if (sc->sc_bulkout_xfer) {
 481                 usbd_free_xfer(sc->sc_bulkout_xfer);
 482                 sc->sc_bulkout_xfer = NULL;
 483         }
 484
 485         if (!(sc->sc_dev_flags & USC_KEEP_OPEN)) {
 486                 if (sc->sc_bulkin_pipe != NULL) {
 487                         usbd_abort_pipe(sc->sc_bulkin_pipe);
 488                         usbd_close_pipe(sc->sc_bulkin_pipe);
 489                         sc->sc_bulkin_pipe = NULL;
 490                 }
 491                 if (sc->sc_bulkout_pipe != NULL) {
 492                         usbd_abort_pipe(sc->sc_bulkout_pipe);
 493                         usbd_close_pipe(sc->sc_bulkout_pipe);
 494                         sc->sc_bulkout_pipe = NULL;
 495                 }
 496         }
 497
 498         if (sc->sc_bulkin_buffer) {
 499                 kfree(sc->sc_bulkin_buffer, M_USBDEV);
 500                 sc->sc_bulkin_buffer = NULL;
 501         }
 502         if (sc->sc_bulkout_buffer) {
 503                 kfree(sc->sc_bulkout_buffer, M_USBDEV);
 504                 sc->sc_bulkout_buffer = NULL;
 505         }
 506
 507         sc->sc_state &= ~USCANNER_OPEN;
 508 }
 509
 510 static int
 511 uscanner_do_read(struct uscanner_softc *sc, struct uio *uio, int flag)
 512 {
 513         u_int32_t n, tn;
 514         usbd_status err;
 515         int error = 0;
 516
 517         DPRINTFN(5, ("%s: uscannerread\n", device_get_nameunit(sc->sc_dev)));
 518
 519         if (sc->sc_dying)
 520                 return (EIO);
 521
 522         while ((n = min(sc->sc_bulkin_bufferlen, uio->uio_resid)) != 0) {
 523                 DPRINTFN(1, ("uscannerread: start transfer %d bytes\n",n));
 524                 tn = n;
 525
 526                 err = usbd_bulk_transfer(
 527                         sc->sc_bulkin_xfer, sc->sc_bulkin_pipe,
 528                         USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
 529                         sc->sc_bulkin_buffer, &tn,
 530                         "uscnrb");
 531                 if (err) {
 532                         if (err == USBD_INTERRUPTED)
 533                                 error = EINTR;
 534                         else if (err == USBD_TIMEOUT)
 535                                 error = ETIMEDOUT;
 536                         else
 537                                 error = EIO;
 538                         break;
 539                 }
 540                 DPRINTFN(1, ("uscannerread: got %d bytes\n", tn));
 541                 error = uiomove(sc->sc_bulkin_buffer, tn, uio);
 542                 if (error || tn < n)
 543                         break;
 544         }
 545
 546         return (error);
 547 }
 548
 549 int
 550 uscannerread(struct dev_read_args *ap)
 551 {
 552         cdev_t dev = ap->a_head.a_dev;
 553         struct uscanner_softc *sc;
 554         int error;
 555
 556         sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
 557
 558         sc->sc_refcnt++;
 559         error = uscanner_do_read(sc, ap->a_uio, ap->a_ioflag);
 560         if (--sc->sc_refcnt < 0)
 561                 usb_detach_wakeup(sc->sc_dev);
 562
 563         return (error);
 564 }
 565
 566 static int
 567 uscanner_do_write(struct uscanner_softc *sc, struct uio *uio, int flag)
 568 {
 569         u_int32_t n;
 570         int error = 0;
 571         usbd_status err;
 572
 573         DPRINTFN(5, ("%s: uscanner_do_write\n", device_get_nameunit(sc->sc_dev)));
 574
 575         if (sc->sc_dying)
 576                 return (EIO);
 577
 578         while ((n = min(sc->sc_bulkout_bufferlen, uio->uio_resid)) != 0) {
 579                 error = uiomove(sc->sc_bulkout_buffer, n, uio);
 580                 if (error)
 581                         break;
 582                 DPRINTFN(1, ("uscanner_do_write: transfer %d bytes\n", n));
 583                 err = usbd_bulk_transfer(
 584                         sc->sc_bulkout_xfer, sc->sc_bulkout_pipe,
 585                         0, USBD_NO_TIMEOUT,
 586                         sc->sc_bulkout_buffer, &n,
 587                         "uscnwb");
 588                 if (err) {
 589                         if (err == USBD_INTERRUPTED)
 590                                 error = EINTR;
 591                         else
 592                                 error = EIO;
 593                         break;
 594                 }
 595         }
 596
 597         return (error);
 598 }
 599
 600 int
 601 uscannerwrite(struct dev_write_args *ap)
 602 {
 603         cdev_t dev = ap->a_head.a_dev;
 604         struct uscanner_softc *sc;
 605         int error;
 606
 607         sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
 608
 609         sc->sc_refcnt++;
 610         error = uscanner_do_write(sc, ap->a_uio, ap->a_ioflag);
 611         if (--sc->sc_refcnt < 0)
 612                 usb_detach_wakeup(sc->sc_dev);
 613         return (error);
 614 }
 615
 616 static int
 617 uscanner_detach(device_t self)
 618 {
 619         struct uscanner_softc *sc = device_get_softc(self);
 620
 621         DPRINTF(("uscanner_detach: sc=%p\n", sc));
 622
 623         sc->sc_dying = 1;
 624         sc->sc_dev_flags = 0;   /* make close really close device */
 625
 626         /* Abort all pipes.  Causes processes waiting for transfer to wake. */
 627         if (sc->sc_bulkin_pipe != NULL)
 628                 usbd_abort_pipe(sc->sc_bulkin_pipe);
 629         if (sc->sc_bulkout_pipe != NULL)
 630                 usbd_abort_pipe(sc->sc_bulkout_pipe);
 631
 632         crit_enter();
 633         if (--sc->sc_refcnt >= 0) {
 634                 /* Wait for processes to go away. */
 635                 usb_detach_wait(sc->sc_dev);
 636         }
 637         crit_exit();
 638
 639         /* destroy the device for the control endpoint */
 640         dev_ops_remove(&uscanner_ops, -1, device_get_unit(sc->sc_dev));
 641
 642         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
 643                            sc->sc_dev);
 644
 645         return (0);
 646 }
 647
 648 int
 649 uscannerpoll(struct dev_poll_args *ap)
 650 {
 651         cdev_t dev = ap->a_head.a_dev;
 652         struct uscanner_softc *sc;
 653         int revents = 0;
 654
 655         sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
 656
 657         if (sc->sc_dying)
 658                 return (EIO);
 659
 660         /*
 661          * We have no easy way of determining if a read will
 662          * yield any data or a write will happen.
 663          * Pretend they will.
 664          */
 665         revents |= ap->a_events &
 666                    (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
 667
 668         ap->a_events = revents;
 669         return (0);
 670 }
 671
 672 DRIVER_MODULE(uscanner, uhub, uscanner_driver, uscanner_devclass, usbd_driver_load, 0);
 673