FreeBSD/Linux Kernel Cross Reference
sys/dev/scsipi/ssvar.h

     /*      $NetBSD: ssvar.h,v 1.10.2.1 2004/09/11 12:58:07 he Exp $        */
     
     /*
      * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
      *   modified for configurable scanner support by Joachim Koenig
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Kenneth Stailey.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*
     * SCSI scanner interface description
     */
    
    /*
     * Special handlers for impractically different scanner types.
     * Register NULL for a function if you want to try the real SCSI code
     * (with quirks table)
     */
    struct ss_softc;
    struct scan_io;
    
    struct ss_special {
            int     (*set_params) __P((struct ss_softc *, struct scan_io *));
            int     (*trigger_scanner) __P((struct ss_softc *));
            int     (*get_params) __P((struct ss_softc *));
            /* some scanners only send line-multiples */
            void    (*minphys) __P((struct ss_softc *, struct buf *));
            int     (*read) __P((struct ss_softc *, struct buf *));
            int     (*rewind_scanner) __P((struct ss_softc *));
            int     (*load_adf) __P((struct ss_softc *));
            int     (*unload_adf) __P((struct ss_softc *));
    };
    
    /*
     * ss_softc has to be declared here, because the device dependant
     * modules include it
     */
    struct ss_softc {
            struct device sc_dev;
    
            int flags;
    #define SSF_TRIGGERED   0x01    /* read operation has been primed */
    #define SSF_LOADED      0x02    /* parameters loaded */
    #define SSF_AUTOCONF    0x04    /* set during auto-configuration */
            struct scsipi_periph *sc_periph; /* contains our targ, lun, etc. */
            struct scan_io sio;
            struct bufq_state buf_queue;    /* the queue of pending IO operations */
            struct callout sc_callout;      /* to restart the buf queue */
            u_int quirks;                   /* scanner is only mildly twisted */
    #define SS_Q_GET_BUFFER_SIZE    0x0001  /* poll for available data in ssread() */
    /* truncate to byte boundary is assumed by default unless one of these is set */
    #define SS_Q_PAD_TO_BYTE        0x0002  /* pad monochrome data to byte boundary */
    #define SS_Q_PAD_TO_WORD        0x0004  /* pad monochrome data to word boundary */
    #define SS_Q_THRESHOLD_FOLLOWS_BRIGHTNESS 0x0008
            struct ss_special *special;     /* special handlers for spec. devices */
    };
    
    void    ssrestart(void *); 
    
    /*
     * define the special attach routines if configured
     */
    void mustek_attach __P((struct ss_softc *, struct scsipibus_attach_args *));
    void scanjet_attach __P((struct ss_softc *, struct scsipibus_attach_args *));

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