e3f122733a
sectors so the geometry of large IDE disks has to be adjusted. This corresponds to what the OpenSolaris dad(7D) driver does except that the latter only tweaks sectors and effectively limits the mediasize to 128GB so the cylinders and heads fields won't ever overflow. Not limiting the mediasize is a compromise between allowing to use Sun disk label as far as possible and being able to use the entire disk with another disk label. This allows to use the full capacity of large IDE disks if they were not labeled under (Open)Solaris (in both ways of the meaning). MFC after: 2 weeks
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/*-
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* Copyright (c) 1995 Bruce D. Evans.
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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. Neither the name of the author nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE 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 THE 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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* from: FreeBSD: src/sys/i386/include/md_var.h,v 1.40 2001/07/12
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* $FreeBSD$
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*/
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#ifndef _MACHINE_MD_VAR_H_
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#define _MACHINE_MD_VAR_H_
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typedef void cpu_block_copy_t(const void *src, void *dst, size_t len);
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typedef void cpu_block_zero_t(void *dst, size_t len);
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extern char tl0_base[];
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extern char _end[];
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extern long Maxmem;
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extern vm_offset_t kstack0;
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extern vm_paddr_t kstack0_phys;
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struct pcpu;
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struct md_utrap;
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void cpu_identify(u_long vers, u_int clock, u_int id);
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void cpu_setregs(struct pcpu *pc);
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int is_physical_memory(vm_paddr_t addr);
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struct md_utrap *utrap_alloc(void);
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void utrap_free(struct md_utrap *ut);
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struct md_utrap *utrap_hold(struct md_utrap *ut);
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cpu_block_copy_t spitfire_block_copy;
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cpu_block_zero_t spitfire_block_zero;
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extern cpu_block_copy_t *cpu_block_copy;
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extern cpu_block_zero_t *cpu_block_zero;
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/*
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* Given that the Sun disk label only uses 16-bit fields for cylinders,
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* heads and sectors we might need to adjust the geometry of large IDE
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* disks.
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* We have to have a knowledge that a device_t is a struct device * here
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* to avoid 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 sparc64_ad_firmware_geom_adjust(struct device *dev, struct disk *disk);
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#define ad_firmware_geom_adjust(dev, dsk) \
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sparc64_ad_firmware_geom_adjust(dev, dsk)
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#endif /* !_MACHINE_MD_VAR_H_ */
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