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fdvar.h revision 1.3 
      1 /*
      2  *	$NetBSD: fdvar.h,v 1.3 1995/04/07 19:46:15 pk Exp $
      3  *
      4  * Copyright (c) 1995 Paul Kranenburg
      5  * All rights reserved.
      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 Paul Kranenburg.
     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 #define	FDC_BSIZE	512
     35 #define	FDC_MAXIOSIZE	NBPG	/* XXX should be MAXBSIZE */
     36 
     37 #define FDC_NSTATUS	10
     38 
     39 #if !defined(LOCORE)
     40 struct fdcio {
     41 	/*
     42 	 * 82072 (sun4c) and 82077 (sun4m) controllers have different
     43 	 * register layout; so we cache some here.
     44 	 */
     45 	volatile u_int8_t	*fdcio_reg_msr;
     46 	volatile u_int8_t	*fdcio_reg_fifo;
     47 	volatile u_int8_t	*fdcio_reg_dor;	/* 82077 only */
     48 
     49 	/*
     50 	 * Interrupt state.
     51 	 */
     52 	int	fdcio_istate;
     53 
     54 	/*
     55 	 * IO state.
     56 	 */
     57 	char	*fdcio_data;		/* pseudo-dma data */
     58 	int	fdcio_tc;		/* pseudo-dma Terminal Count */
     59 	u_char	fdcio_status[FDC_NSTATUS];	/* copy of registers */
     60 	int	fdcio_nstat;		/* # of valid status bytes */
     61 
     62 	/*
     63 	 * Statictics.
     64 	 */
     65 	struct	evcnt	fdcio_intrcnt;
     66 };
     67 #endif /* LOCORE */
     68 
     69 /* istate values */
     70 #define ISTATE_IDLE		0	/* No HW interrupt expected */
     71 #define ISTATE_SPURIOUS		1	/* Spurious HW interrupt detected */
     72 #define ISTATE_SENSEI		2	/* Do SENSEI on next HW interrupt */
     73 #define ISTATE_DMA		3	/* Pseudo-DMA in progress */
     74 
     75 #define FDIOCEJECT	_IO('f', 24)
     76 
     77