82de09b2c0
from the actual geometry. This enables support of disks larger than ~120GB on pc98 boxes. They make great little network appliances. I've been using these changes for the past year or so on my network storage pc98 box :-).
54 lines
2.2 KiB
C
54 lines
2.2 KiB
C
/*-
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* Copyright (C) 2005 M. Warner Losh. 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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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PC98_INCLUDE_MD_VAR_H_
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#define _PC98_INCLUDE_MD_VAR_H_
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#include <i386/md_var.h>
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/*
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* PC98 machines are based on Intel CPUs. Some add-in boards offer
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* different CPUs than came with the processor. These CPUs sometimes
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* require additional flushing before and/or after DMAs.
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*/
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extern int need_pre_dma_flush;
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extern int need_post_dma_flush;
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/*
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* The ad driver maps the IDE disk's actual geometry to the firmware's
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* notion of geometry. However, PC98 machines need to do something
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* different sometimes, so override the hook so we can do so. We have to
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* have a knowledge that a device_t is a struct device * here to avoid
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* including too many things from this file.
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*/
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struct disk;
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struct device;
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void pc98_ad_firmware_geom_adjust(struct device *, struct disk *);
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#define ad_firmware_geom_adjust(dev, dsk) pc98_ad_firmware_geom_adjust(dev, dsk)
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#endif /* !_PC98_INCLUDE_MD_VAR_H_ */
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