root/dev/usb/uscanner.c

DEFINITIONS

1. uscanner_match
2. uscanner_attach
3. uscanneropen
4. uscannerclose
5. uscanner_do_close
6. uscanner_do_read
7. uscannerread
8. uscanner_do_write
9. uscannerwrite
10. uscanner_activate
11. uscanner_detach
12. uscannerpoll
13. uscannerioctl
14. filt_uscannerdetach
15. uscannerkqfilter

    1 /*      $OpenBSD: uscanner.c,v 1.35 2007/06/14 10:11:16 mbalmer Exp $ */
    2 /*      $NetBSD: uscanner.c,v 1.40 2003/01/27 00:32:44 wiz Exp $        */
    4 /*
    5  * Copyright (c) 2000 The NetBSD Foundation, Inc.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Lennart Augustsson (lennart@augustsson.net) at
   10  * Carlstedt Research & Technology
   11  * and Nick Hibma (n_hibma@qubesoft.com).
   12  *
   13  * Redistribution and use in source and binary forms, with or without
   14  * modification, are permitted provided that the following conditions
   15  * are met:
   16  * 1. Redistributions of source code must retain the above copyright
   17  *    notice, this list of conditions and the following disclaimer.
   18  * 2. Redistributions in binary form must reproduce the above copyright
   19  *    notice, this list of conditions and the following disclaimer in the
   20  *    documentation and/or other materials provided with the distribution.
   21  * 3. All advertising materials mentioning features or use of this software
   22  *    must display the following acknowledgement:
   23  *        This product includes software developed by the NetBSD
   24  *        Foundation, Inc. and its contributors.
   25  * 4. Neither the name of The NetBSD Foundation nor the names of its
   26  *    contributors may be used to endorse or promote products derived
   27  *    from this software without specific prior written permission.
   28  *
   29  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   30  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   31  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   32  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   33  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   36  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   37  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   39  * POSSIBILITY OF SUCH DAMAGE.
   40  */
   43 #include <sys/param.h>
   44 #include <sys/systm.h>
   45 #include <sys/kernel.h>
   46 #include <sys/malloc.h>
   47 #include <sys/device.h>
   48 #include <sys/tty.h>
   49 #include <sys/file.h>
   50 #include <sys/selinfo.h>
   51 #include <sys/proc.h>
   52 #include <sys/vnode.h>
   53 #include <sys/poll.h>
   54 #include <sys/conf.h>
   56 #include <dev/usb/usb.h>
   57 #include <dev/usb/usbdi.h>
   58 #include <dev/usb/usbdi_util.h>
   60 #include <dev/usb/usbdevs.h>
   62 #ifdef USCANNER_DEBUG
   63 #define DPRINTF(x)      do { if (uscannerdebug) printf x; } while (0)
   64 #define DPRINTFN(n,x)   do { if (uscannerdebug>(n)) printf x; } while (0)
   65 int     uscannerdebug = 0;
   66 #else
   67 #define DPRINTF(x)
   68 #define DPRINTFN(n,x)
   69 #endif
   71 struct uscan_info {
   72         struct usb_devno devno;
u_int flags;
   74 #define USC_KEEP_OPEN 1
   75 };
   77 /* Table of scanners that may work with this driver. */
   78 static const struct uscan_info uscanner_devs[] = {
   79   /* Acer Peripherals */
   80  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_320U }, 0 },
   81  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_640U }, 0 },
   82  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_620U }, 0 },
   83  {{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_C310U }, 0 },
   85   /* AGFA */
   86  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1236U }, 0 },
   87  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1212U }, 0 },
   88  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1212U2 }, 0 },
   89  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANTOUCH }, 0 },
   90  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE40 }, 0 },
   91  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE50 }, 0 },
   92  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE20 }, 0 },
   93  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE25 }, 0 },
   94  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE26 }, 0 },
   95  {{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE52 }, 0 },
   97   /* Avision */
   98  {{ USB_VENDOR_AVISION, USB_PRODUCT_AVISION_1200U }, 0 },
  100   /* Canon */
  101  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N656U }, 0 },
  102  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N670U }, 0 },
  103  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N1220U }, 0 },
  104  {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N1240U }, 0 },
  106   /* Kye */
  107  {{ USB_VENDOR_KYE, USB_PRODUCT_KYE_VIVIDPRO }, 0 },
  109   /* HP */
  110  {{ USB_VENDOR_HP, USB_PRODUCT_HP_2200C }, 0 },
  111  {{ USB_VENDOR_HP, USB_PRODUCT_HP_3300C }, 0 },
  112  {{ USB_VENDOR_HP, USB_PRODUCT_HP_3400CSE }, 0 },
  113  {{ USB_VENDOR_HP, USB_PRODUCT_HP_4100C }, 0 },
  114  {{ USB_VENDOR_HP, USB_PRODUCT_HP_4200C }, 0 },
  115  {{ USB_VENDOR_HP, USB_PRODUCT_HP_4300C }, 0 },
  116  {{ USB_VENDOR_HP, USB_PRODUCT_HP_S20 }, 0 },
  117  {{ USB_VENDOR_HP, USB_PRODUCT_HP_5200C }, 0 },
  118 #if 0
  119   /* Handled by usscanner */
  120  {{ USB_VENDOR_HP, USB_PRODUCT_HP_5300C }, 0 },
  121 #endif
  122  {{ USB_VENDOR_HP, USB_PRODUCT_HP_6200C }, 0 },
  123  {{ USB_VENDOR_HP, USB_PRODUCT_HP_6300C }, 0 },
  125 #if 0
  126   /* XXX Should be handled by usscanner */
  127   /* Microtek */
  128  {{ USB_VENDOR_SCANLOGIC, USB_PRODUCT_SCANLOGIC_336CX }, 0 },
  129  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_X6U }, 0 },
  130  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_336CX }, 0 },
  131  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_336CX2 }, 0 },
  132  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_C6 }, 0 },
  133  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6USL }, 0 },
  134  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6USL2 }, 0 },
  135  {{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6UL }, 0 },
  136 #endif
  138   /* Mustek */
  139  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200CU }, 0 },
  140  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_BEARPAW1200F }, 0 },
  141  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_600USB }, 0 },
  142  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_600CU }, 0 },
  143  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200USB }, 0 },
  144  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200UB }, 0 },
  145  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200USBPLUS }, 0 },
  146  {{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200CUPLUS }, 0 },
  148   /* National */
  149  {{ USB_VENDOR_NATIONAL, USB_PRODUCT_NATIONAL_BEARPAW1200 }, 0 },
  150  {{ USB_VENDOR_NATIONAL, USB_PRODUCT_NATIONAL_BEARPAW2400 }, 0 },
  152   /* Primax */
  153  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2X300 }, 0 },
  154  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E300 }, 0 },
  155  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2300 }, 0 },
  156  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E3002 }, 0 },
  157  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_9600 }, 0 },
  158  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_600U }, 0 },
  159  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_6200 }, 0 },
  160  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_19200 }, 0 },
  161  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_1200U }, 0 },
  162  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G600 }, 0 },
  163  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_636I }, 0 },
  164  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2600 }, 0 },
  165  {{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E600 }, 0 },
  167   /* Epson */
  168  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_636 }, 0 },
  169  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_610 }, 0 },
  170  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1200 }, 0 },
  171  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1240 }, 0 },
  172  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1260 }, 0 },
  173  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1600 }, 0 },
  174  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1640 }, 0 },
  175  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1660 }, 0 },
  176  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_640U }, 0 },
  177  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1650 }, 0 },
  178  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_2400 }, 0 },
  179  {{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_GT9700F }, USC_KEEP_OPEN },
  181   /* UMAX */
  182  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA1220U }, 0 },
  183  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA1236U }, 0 },
  184  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2000U }, 0 },
  185  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2200U }, 0 },
  186  {{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA3400 }, 0 },
  188   /* Visioneer */
  189  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_3000 }, 0 },
  190  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_5300 }, 0 },
  191  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_7600 }, 0 },
  192  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_6100 }, 0 },
  193  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_6200 }, 0 },
  194  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_8100 }, 0 },
  195  {{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_8600 }, 0 },
  197   /* Ultima */
  198  {{ USB_VENDOR_ULTIMA, USB_PRODUCT_ULTIMA_1200UBPLUS }, 0 },
  200 };
  201 #define uscanner_lookup(v, p) ((const struct uscan_info *)usb_lookup(uscanner_devs, v, p))
  203 #define USCANNER_BUFFERSIZE     1024
  205 struct uscanner_softc {
  206         struct device           sc_dev;         /* base device */
usbd_device_handle      sc_udev;
usbd_interface_handle   sc_iface;
u_int                   sc_dev_flags;
usbd_pipe_handle        sc_bulkin_pipe;
  213         int                     sc_bulkin;
usbd_xfer_handle        sc_bulkin_xfer;
  215         void                    *sc_bulkin_buffer;
  216         int                     sc_bulkin_bufferlen;
  217         int                     sc_bulkin_datalen;
usbd_pipe_handle        sc_bulkout_pipe;
  220         int                     sc_bulkout;
usbd_xfer_handle        sc_bulkout_xfer;
  222         void                    *sc_bulkout_buffer;
  223         int                     sc_bulkout_bufferlen;
  224         int                     sc_bulkout_datalen;
  226         struct selinfo          sc_selq;
u_char                  sc_state;
  229 #define USCANNER_OPEN           0x01    /* opened */
  231         int                     sc_refcnt;
u_char                  sc_dying;
  233 };
  235 int uscanner_do_read(struct uscanner_softc *, struct uio *, int);
  236 int uscanner_do_write(struct uscanner_softc *, struct uio *, int);
  237 void uscanner_do_close(struct uscanner_softc *);
  239 #define USCANNERUNIT(n) (minor(n))
  241 int uscanner_match(struct device *, void *, void *); 
  242 void uscanner_attach(struct device *, struct device *, void *); 
  243 int uscanner_detach(struct device *, int); 
  244 int uscanner_activate(struct device *, enum devact); 
  246 struct cfdriver uscanner_cd = { 
NULL, "uscanner", DV_DULL 
  248 }; 
  250 const struct cfattach uscanner_ca = { 
  251         sizeof(struct uscanner_softc), 
uscanner_match, 
uscanner_attach, 
uscanner_detach, 
uscanner_activate, 
  256 };
  258 int
uscanner_match(struct device *parent, void *match, void *aux)
  260 {
  261         struct usb_attach_arg *uaa = aux;
  263         if (uaa->iface != NULL)
  264                 return UMATCH_NONE;
  266         return (uscanner_lookup(uaa->vendor, uaa->product) != NULL ?
UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
  268 }
  270 void
uscanner_attach(struct device *parent, struct device *self, void *aux)
  272 {
  273         struct uscanner_softc *sc = (struct uscanner_softc *)self;
  274         struct usb_attach_arg *uaa = aux;
usb_interface_descriptor_t *id = 0;
usb_endpoint_descriptor_t *ed, *ed_bulkin = NULL, *ed_bulkout = NULL;
  277         char *devinfop;
  278         int i;
usbd_status err;
devinfop = usbd_devinfo_alloc(uaa->device, 0);
printf("\n%s: %s\n", sc->sc_dev.dv_xname, devinfop);
usbd_devinfo_free(devinfop);
sc->sc_dev_flags = uscanner_lookup(uaa->vendor, uaa->product)->flags;
sc->sc_udev = uaa->device;
err = usbd_set_config_no(uaa->device, 1, 1); /* XXX */
  290         if (err) {
printf("%s: setting config no failed\n",
sc->sc_dev.dv_xname);
  293                 return;
  294         }
  296         /* XXX We only check the first interface */
err = usbd_device2interface_handle(sc->sc_udev, 0, &sc->sc_iface);
  298         if (!err && sc->sc_iface)
id = usbd_get_interface_descriptor(sc->sc_iface);
  300         if (err || id == 0) {
printf("%s: could not get interface descriptor, err=%d,id=%p\n",
sc->sc_dev.dv_xname, err, id);
  303                 return;
  304         }
  306         /* Find the two first bulk endpoints */
  307         for (i = 0 ; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
  309                 if (ed == 0) {
printf("%s: could not read endpoint descriptor\n",
sc->sc_dev.dv_xname);
  312                         return;
  313                 }
  315                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
  316                     && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
ed_bulkin = ed;
  318                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT
  319                     && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
ed_bulkout = ed;
  321                 }
  323                 if (ed_bulkin && ed_bulkout)    /* found all we need */
  324                         break;
  325         }
  327         /* Verify that we goething sensible */
  328         if (ed_bulkin == NULL || ed_bulkout == NULL) {
printf("%s: bulk-in and/or bulk-out endpoint not found\n",
sc->sc_dev.dv_xname);
  331                 return;
  332         }
sc->sc_bulkin = ed_bulkin->bEndpointAddress;
sc->sc_bulkout = ed_bulkout->bEndpointAddress;
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
  338                            &sc->sc_dev);
  339 }
  341 int
uscanneropen(dev_t dev, int flag, int mode, struct proc *p)
  343 {
  344         struct uscanner_softc *sc;
  345         int unit = USCANNERUNIT(dev);
usbd_status err;
  348         if (unit >= uscanner_cd.cd_ndevs)
  349                 return (ENXIO);
sc = uscanner_cd.cd_devs[unit];
  351         if (sc == NULL)
  352                 return (ENXIO);
DPRINTFN(5, ("uscanneropen: flag=%d, mode=%d, unit=%d\n",
flag, mode, unit));
  357         if (sc->sc_dying)
  358                 return (ENXIO);
  360         if (sc->sc_state & USCANNER_OPEN)
  361                 return (EBUSY);
sc->sc_state |= USCANNER_OPEN;
sc->sc_bulkin_buffer = malloc(USCANNER_BUFFERSIZE, M_USBDEV, M_WAITOK);
sc->sc_bulkout_buffer = malloc(USCANNER_BUFFERSIZE, M_USBDEV, M_WAITOK);
  367         /* No need to check buffers for NULL since we have WAITOK */
sc->sc_bulkin_bufferlen = USCANNER_BUFFERSIZE;
sc->sc_bulkout_bufferlen = USCANNER_BUFFERSIZE;
  372         /* We have decided on which endpoints to use, now open the pipes */
  373         if (sc->sc_bulkin_pipe == NULL) {
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin,
USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe);
  376                 if (err) {
printf("%s: cannot open bulk-in pipe (addr %d)\n",
sc->sc_dev.dv_xname, sc->sc_bulkin);
uscanner_do_close(sc);
  380                         return (EIO);
  381                 }
  382         }
  383         if (sc->sc_bulkout_pipe == NULL) {
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout,
USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
  386                 if (err) {
printf("%s: cannot open bulk-out pipe (addr %d)\n",
sc->sc_dev.dv_xname, sc->sc_bulkout);
uscanner_do_close(sc);
  390                         return (EIO);
  391                 }
  392         }
sc->sc_bulkin_xfer = usbd_alloc_xfer(sc->sc_udev);
  395         if (sc->sc_bulkin_xfer == NULL) {
uscanner_do_close(sc);
  397                 return (ENOMEM);
  398         }
sc->sc_bulkout_xfer = usbd_alloc_xfer(sc->sc_udev);
  400         if (sc->sc_bulkout_xfer == NULL) {
uscanner_do_close(sc);
  402                 return (ENOMEM);
  403         }
  405         return (0);     /* success */
  406 }
  408 int
  409 uscannerclose(dev_t dev, int flag, int mode, struct proc *p)
  410 {
  411         struct uscanner_softc *sc;
sc = uscanner_cd.cd_devs[USCANNERUNIT(dev)];
DPRINTFN(5, ("uscannerclose: flag=%d, mode=%d, unit=%d\n",
flag, mode, USCANNERUNIT(dev)));
  418 #ifdef DIAGNOSTIC
  419         if (!(sc->sc_state & USCANNER_OPEN)) {
printf("uscannerclose: not open\n");
  421                 return (EINVAL);
  422         }
  423 #endif
uscanner_do_close(sc);
  427         return (0);
  428 }
  430 void
uscanner_do_close(struct uscanner_softc *sc)
  432 {
  433         if (sc->sc_bulkin_xfer) {
usbd_free_xfer(sc->sc_bulkin_xfer);
sc->sc_bulkin_xfer = NULL;
  436         }
  437         if (sc->sc_bulkout_xfer) {
usbd_free_xfer(sc->sc_bulkout_xfer);
sc->sc_bulkout_xfer = NULL;
  440         }
  442         if (!(sc->sc_dev_flags & USC_KEEP_OPEN)) {
  443                 if (sc->sc_bulkin_pipe != NULL) {
usbd_abort_pipe(sc->sc_bulkin_pipe);
usbd_close_pipe(sc->sc_bulkin_pipe);
sc->sc_bulkin_pipe = NULL;
  447                 }
  448                 if (sc->sc_bulkout_pipe != NULL) {
usbd_abort_pipe(sc->sc_bulkout_pipe);
usbd_close_pipe(sc->sc_bulkout_pipe);
sc->sc_bulkout_pipe = NULL;
  452                 }
  453         }
  455         if (sc->sc_bulkin_buffer) {
free(sc->sc_bulkin_buffer, M_USBDEV);
sc->sc_bulkin_buffer = NULL;
  458         }
  459         if (sc->sc_bulkout_buffer) {
free(sc->sc_bulkout_buffer, M_USBDEV);
sc->sc_bulkout_buffer = NULL;
  462         }
sc->sc_state &= ~USCANNER_OPEN;
  465 }
  467 int
uscanner_do_read(struct uscanner_softc *sc, struct uio *uio, int flag)
  469 {
u_int32_t n, tn;
usbd_status err;
  472         int error = 0;
DPRINTFN(5, ("%s: uscannerread\n", sc->sc_dev.dv_xname));
  476         if (sc->sc_dying)
  477                 return (EIO);
  479         while ((n = min(sc->sc_bulkin_bufferlen, uio->uio_resid)) != 0) {
DPRINTFN(1, ("uscannerread: start transfer %d bytes\n",n));
tn = n;
err = usbd_bulk_transfer(
sc->sc_bulkin_xfer, sc->sc_bulkin_pipe,
USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
sc->sc_bulkin_buffer, &tn,
  487                         "uscnrb");
  488                 if (err) {
  489                         if (err == USBD_INTERRUPTED)
error = EINTR;
  491                         else if (err == USBD_TIMEOUT)
error = ETIMEDOUT;
  493                         else
error = EIO;
  495                         break;
  496                 }
DPRINTFN(1, ("uscannerread: got %d bytes\n", tn));
error = uiomove(sc->sc_bulkin_buffer, tn, uio);
  499                 if (error || tn < n)
  500                         break;
  501         }
  503         return (error);
  504 }
  506 int
  507 uscannerread(dev_t dev, struct uio *uio, int flag)
  508 {
  509         struct uscanner_softc *sc;
  510         int error;
sc = uscanner_cd.cd_devs[USCANNERUNIT(dev)];
sc->sc_refcnt++;
error = uscanner_do_read(sc, uio, flag);
  516         if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
  519         return (error);
  520 }
  522 int
uscanner_do_write(struct uscanner_softc *sc, struct uio *uio, int flag)
  524 {
u_int32_t n;
  526         int error = 0;
usbd_status err;
DPRINTFN(5, ("%s: uscanner_do_write\n", sc->sc_dev.dv_xname));
  531         if (sc->sc_dying)
  532                 return (EIO);
  534         while ((n = min(sc->sc_bulkout_bufferlen, uio->uio_resid)) != 0) {
error = uiomove(sc->sc_bulkout_buffer, n, uio);
  536                 if (error)
  537                         break;
DPRINTFN(1, ("uscanner_do_write: transfer %d bytes\n", n));
err = usbd_bulk_transfer(
sc->sc_bulkout_xfer, sc->sc_bulkout_pipe,
  541                         0, USBD_NO_TIMEOUT,
sc->sc_bulkout_buffer, &n,
  543                         "uscnwb");
  544                 if (err) {
  545                         if (err == USBD_INTERRUPTED)
error = EINTR;
  547                         else
error = EIO;
  549                         break;
  550                 }
  551         }
  553         return (error);
  554 }
  556 int
  557 uscannerwrite(dev_t dev, struct uio *uio, int flag)
  558 {
  559         struct uscanner_softc *sc;
  560         int error;
sc = uscanner_cd.cd_devs[USCANNERUNIT(dev)];
sc->sc_refcnt++;
error = uscanner_do_write(sc, uio, flag);
  566         if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
  568         return (error);
  569 }
  571 int
uscanner_activate(struct device *self, enum devact act)
  573 {
  574         struct uscanner_softc *sc = (struct uscanner_softc *)self;
  576         switch (act) {
  577         case DVACT_ACTIVATE:
  578                 break;
  580         case DVACT_DEACTIVATE:
sc->sc_dying = 1;
  582                 break;
  583         }
  584         return (0);
  585 }
  587 int
uscanner_detach(struct device *self, int flags)
  589 {
  590         struct uscanner_softc *sc = (struct uscanner_softc *)self;
  591         int s;
  592         int maj, mn;
DPRINTF(("uscanner_detach: sc=%p flags=%d\n", sc, flags));
sc->sc_dying = 1;
sc->sc_dev_flags = 0;   /* make close really close device */
  599         /* Abort all pipes.  Causes processes waiting for transfer to wake. */
  600         if (sc->sc_bulkin_pipe != NULL)
usbd_abort_pipe(sc->sc_bulkin_pipe);
  602         if (sc->sc_bulkout_pipe != NULL)
usbd_abort_pipe(sc->sc_bulkout_pipe);
s = splusb();
  606         if (--sc->sc_refcnt >= 0) {
  607                 /* Wait for processes to go away. */
usb_detach_wait(&sc->sc_dev);
  609         }
splx(s);
  612         /* locate the major number */
  613         for (maj = 0; maj < nchrdev; maj++)
  614                 if (cdevsw[maj].d_open == uscanneropen)
  615                         break;
  617         /* Nuke the vnodes for any open instances (calls close). */
mn = self->dv_unit * USB_MAX_ENDPOINTS;
vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
  621                            &sc->sc_dev);
  623         return (0);
  624 }
  626 int
  627 uscannerpoll(dev_t dev, int events, struct proc *p)
  628 {
  629         struct uscanner_softc *sc;
  630         int revents = 0;
sc = uscanner_cd.cd_devs[USCANNERUNIT(dev)];
  634         if (sc->sc_dying)
  635                 return (POLLERR);
  637         /*
  638          * We have no easy way of determining if a read will
  639          * yield any data or a write will happen.
  640          * Pretend they will.
  641          */
revents |= events &
  643                    (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
  645         return (revents);
  646 }
  648 int
  649 uscannerioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
  650 {
  651         return (EINVAL);
  652 }
  654 void filt_uscannerdetach(struct knote *);
  655 int uscannerkqfilter(dev_t, struct knote *);
  657 void
filt_uscannerdetach(struct knote *kn)
  659 {
  660         struct uscanner_softc *sc = (void *)kn->kn_hook;
SLIST_REMOVE(&sc->sc_selq.si_note, kn, knote, kn_selnext);
  663 }
  665 struct filterops uscanner_seltrue_filtops =
  666         { 1, NULL, filt_uscannerdetach, filt_seltrue };
  668 int
uscannerkqfilter(dev_t dev, struct knote *kn)
  670 {
  671         struct uscanner_softc *sc;
  672         struct klist *klist;
sc = uscanner_cd.cd_devs[USCANNERUNIT(dev)];
  676         if (sc->sc_dying)
  677                 return (1);
  679         switch (kn->kn_filter) {
  680         case EVFILT_READ:
  681         case EVFILT_WRITE:
  682                 /* 
  683                  * We have no easy way of determining if a read will
  684                  * yield any data or a write will happen.
  685                  * Pretend they will.
  686                  */
klist = &sc->sc_selq.si_note;
kn->kn_fop = &uscanner_seltrue_filtops;
  689                 break;
  691         default:
  692                 return (1);
  693         }
kn->kn_hook = (void *)sc;
SLIST_INSERT_HEAD(klist, kn, kn_selnext);
  699         return (0);
  700 }