77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
/*
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* $NetBSD: fdvar.h,v 1.4 1996/02/01 22:32:29 mycroft Exp $
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*
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* Copyright (c) 1995 Paul Kranenburg
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#define FDC_BSIZE 512
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#define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */
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#define FDC_NSTATUS 10
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#ifndef _LOCORE
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struct fdcio {
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/*
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* 82072 (sun4c) and 82077 (sun4m) controllers have different
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* register layout; so we cache some here.
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*/
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volatile u_int8_t *fdcio_reg_msr;
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volatile u_int8_t *fdcio_reg_fifo;
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volatile u_int8_t *fdcio_reg_dor; /* 82077 only */
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/*
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* Interrupt state.
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*/
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int fdcio_istate;
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/*
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* IO state.
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*/
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char *fdcio_data; /* pseudo-dma data */
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int fdcio_tc; /* pseudo-dma Terminal Count */
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u_char fdcio_status[FDC_NSTATUS]; /* copy of registers */
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int fdcio_nstat; /* # of valid status bytes */
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/*
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* Statictics.
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*/
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struct evcnt fdcio_intrcnt;
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};
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#endif /* _LOCORE */
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/* istate values */
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#define ISTATE_IDLE 0 /* No HW interrupt expected */
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#define ISTATE_SPURIOUS 1 /* Spurious HW interrupt detected */
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#define ISTATE_SENSEI 2 /* Do SENSEI on next HW interrupt */
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#define ISTATE_DMA 3 /* Pseudo-DMA in progress */
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#define FDIOCEJECT _IO('f', 24)
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