811d597c78
an ugly bit where we record the value of a2 while handling a "nofault" bus error in locore.s in order to know how far the transaction got before a disconnect (see esp.c comments for more details on this). Also get rid of a loop (and delay()!) in the interrupt routine--hinted at and researched by Chas Williams <chas@cmf.nrl.navy.mil>.
50 lines
2.1 KiB
C
50 lines
2.1 KiB
C
/* $NetBSD: espvar.h,v 1.6 2000/12/29 17:23:32 briggs Exp $ */
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/*
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* Copyright (c) 1997 Allen Briggs.
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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 Peter Galbavy.
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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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struct esp_softc {
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struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */
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bus_space_tag_t sc_tag;
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bus_space_handle_t sc_bsh;
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volatile u_char *sc_reg; /* the registers */
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u_char irq_mask; /* mask for clearing IRQ */
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int sc_active; /* Pseudo-DMA state vars */
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int sc_datain;
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size_t sc_dmasize;
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char **sc_dmaaddr;
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size_t *sc_dmalen;
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int sc_tc; /* only used in non-quick */
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int sc_pad; /* only used in quick */
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};
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