178 lines
5.5 KiB
C
178 lines
5.5 KiB
C
/* $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ */
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/*-
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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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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* 4. Neither the name of the University nor the names of its 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 REGENTS 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 REGENTS 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: Utah Hdr: machparam.h 1.11 89/08/14
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* from: @(#)param.h 8.1 (Berkeley) 6/10/93
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* JNPR: param.h,v 1.6.2.1 2007/09/10 07:49:36 girish
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* $FreeBSD$
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*/
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#ifndef _MIPS_INCLUDE_PARAM_H_
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#define _MIPS_INCLUDE_PARAM_H_
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#include <machine/_align.h>
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#include <sys/cdefs.h>
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#ifdef _KERNEL
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#ifndef _LOCORE
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#include <machine/cpu.h>
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#endif
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#endif
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#define __PCI_REROUTE_INTERRUPT
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#ifndef MACHINE
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#define MACHINE "mips"
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#endif
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#ifndef MACHINE_ARCH
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#if _BYTE_ORDER == _BIG_ENDIAN
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#ifdef __mips_n64
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#define MACHINE_ARCH "mips64"
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#ifndef MACHINE_ARCH32
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#define MACHINE_ARCH32 "mips"
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#endif
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#elif defined(__mips_n32)
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#define MACHINE_ARCH "mipsn32"
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#else
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#define MACHINE_ARCH "mips"
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#endif
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#else
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#ifdef __mips_n64
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#define MACHINE_ARCH "mips64el"
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#ifndef MACHINE_ARCH32
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#define MACHINE_ARCH32 "mipsel"
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#endif
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#elif defined(__mips_n32)
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#define MACHINE_ARCH "mipsn32el"
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#else
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#define MACHINE_ARCH "mipsel"
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#endif
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#endif
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#endif
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/*
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* OBJFORMAT_NAMES is a comma-separated list of the object formats
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* that are supported on the architecture.
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*/
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#define OBJFORMAT_NAMES "elf"
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#define OBJFORMAT_DEFAULT "elf"
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#define MID_MACHINE 0 /* None but has to be defined */
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#ifdef SMP
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#define MAXSMPCPU 32
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#ifndef MAXCPU
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#define MAXCPU MAXSMPCPU
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#endif
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#else
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#define MAXSMPCPU 1
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#define MAXCPU 1
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#endif
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_int and must be cast to
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* any desired pointer type.
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*/
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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/*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*/
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#define ALIGNED_POINTER(p, t) ((((unsigned long)(p)) & (sizeof (t) - 1)) == 0)
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/*
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* CACHE_LINE_SIZE is the compile-time maximum cache line size for an
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* architecture. It should be used with appropriate caution.
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*/
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#define CACHE_LINE_SHIFT 6
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#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
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#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */
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#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */
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#define PAGE_MASK (PAGE_SIZE-1)
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t)))
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#if defined(__mips_n32) || defined(__mips_n64) /* PHYSADDR_64_BIT */
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#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */
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#else
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#define NPTEPGSHIFT 10 /* LOG2(NPTEPG) */
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#endif
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#ifdef __mips_n64
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#define NPDEPGSHIFT 9 /* LOG2(NPTEPG) */
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#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT + NPDEPGSHIFT)
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#define NBSEG (1ul << SEGSHIFT)
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#define PDRSHIFT (PAGE_SHIFT + NPTEPGSHIFT)
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#define PDRMASK ((1 << PDRSHIFT) - 1)
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#else
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#define NPDEPGSHIFT 10 /* LOG2(NPTEPG) */
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#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT)
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#define NBSEG (1 << SEGSHIFT) /* bytes/segment */
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#define PDRSHIFT SEGSHIFT /* alias for SEG in 32 bit */
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#define PDRMASK ((1 << PDRSHIFT) - 1)
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#endif
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#define NBPDR (1 << PDRSHIFT) /* bytes/pagedir */
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#define SEGMASK (NBSEG - 1) /* byte offset into segment */
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#define MAXPAGESIZES 1 /* max supported pagesizes */
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#define MAXDUMPPGS 1 /* xxx: why is this only one? */
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/*
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* The kernel stack needs to be aligned on a (PAGE_SIZE * 2) boundary.
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*/
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#define KSTACK_PAGES 2 /* kernel stack */
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#define KSTACK_GUARD_PAGES 2 /* pages of kstack guard; 0 disables */
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/*
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* Mach derived conversion macros
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*/
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#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_page(x) ((x) & ~PAGE_MASK)
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#define atop(x) ((x) >> PAGE_SHIFT)
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#define ptoa(x) ((x) << PAGE_SHIFT)
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#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
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#endif /* !_MIPS_INCLUDE_PARAM_H_ */
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