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ssvar.h revision 1.8 
      1 /*	$NetBSD: ssvar.h,v 1.8 2001/04/25 17:53:41 bouyer Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
      5  *   modified for configurable scanner support by Joachim Koenig
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Kenneth Stailey.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * SCSI scanner interface description
     35  */
     36 
     37 /*
     38  * Special handlers for impractically different scanner types.
     39  * Register NULL for a function if you want to try the real SCSI code
     40  * (with quirks table)
     41  */
     42 struct ss_softc;
     43 struct scan_io;
     44 
     45 struct ss_special {
     46 	int	(*set_params) __P((struct ss_softc *, struct scan_io *));
     47 	int	(*trigger_scanner) __P((struct ss_softc *));
     48 	int	(*get_params) __P((struct ss_softc *));
     49 	/* some scanners only send line-multiples */
     50 	void	(*minphys) __P((struct ss_softc *, struct buf *));
     51 	int	(*read) __P((struct ss_softc *, struct buf *));
     52 	int	(*rewind_scanner) __P((struct ss_softc *));
     53 	int	(*load_adf) __P((struct ss_softc *));
     54 	int	(*unload_adf) __P((struct ss_softc *));
     55 };
     56 
     57 /*
     58  * ss_softc has to be declared here, because the device dependant
     59  * modules include it
     60  */
     61 struct ss_softc {
     62 	struct device sc_dev;
     63 
     64 	int flags;
     65 #define SSF_TRIGGERED	0x01	/* read operation has been primed */
     66 #define	SSF_LOADED	0x02	/* parameters loaded */
     67 #define	SSF_AUTOCONF	0x04	/* set during auto-configuration */
     68 	struct scsipi_periph *sc_periph; /* contains our targ, lun, etc. */
     69 	struct scan_io sio;
     70 	struct buf_queue buf_queue;	/* the queue of pending IO operations */
     71 	u_int quirks;			/* scanner is only mildly twisted */
     72 #define SS_Q_GET_BUFFER_SIZE	0x0001	/* poll for available data in ssread() */
     73 /* truncate to byte boundry is assumed by default unless one of these is set */
     74 #define SS_Q_PAD_TO_BYTE	0x0002	/* pad monochrome data to byte boundary */
     75 #define SS_Q_PAD_TO_WORD	0x0004	/* pad monochrome data to word boundary */
     76 #define SS_Q_THRESHOLD_FOLLOWS_BRIGHTNESS 0x0008
     77 	struct ss_special *special;	/* special handlers for spec. devices */
     78 };
     79 
     80 /*
     81  * define the special attach routines if configured
     82  */
     83 void mustek_attach __P((struct ss_softc *, struct scsipibus_attach_args *));
     84 void scanjet_attach __P((struct ss_softc *, struct scsipibus_attach_args *));
     85