8df790f38f
CACHE_LINE_SIZE constant. These constants are intended to over-estimate the cache line size, and be used at compile-time when a run-time tuning alternative isn't appropriate or available. Defaults for all architectures are 64 bytes, except powerpc where it is 128 bytes (used on G5 systems). MFC after: 2 weeks Discussed on: arch@
163 lines
5.4 KiB
C
163 lines
5.4 KiB
C
/* $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1988 University of Utah.
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department and Ralph Campbell.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: Utah Hdr: machparam.h 1.11 89/08/14
|
|
* from: @(#)param.h 8.1 (Berkeley) 6/10/93
|
|
* JNPR: param.h,v 1.6.2.1 2007/09/10 07:49:36 girish
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PARAM_H_
|
|
#define _MACHINE_PARAM_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifdef _KERNEL
|
|
#ifdef _LOCORE
|
|
#include <machine/psl.h>
|
|
#else
|
|
#include <machine/cpu.h>
|
|
#endif
|
|
#endif
|
|
|
|
#define __PCI_REROUTE_INTERRUPT
|
|
|
|
#ifndef MACHINE
|
|
#define MACHINE "mips"
|
|
#endif
|
|
#ifndef MACHINE_ARCH
|
|
#define MACHINE_ARCH "mips"
|
|
#endif
|
|
|
|
/*
|
|
* OBJFORMAT_NAMES is a comma-separated list of the object formats
|
|
* that are supported on the architecture.
|
|
*/
|
|
#define OBJFORMAT_NAMES "elf"
|
|
#define OBJFORMAT_DEFAULT "elf"
|
|
|
|
#define MID_MACHINE 0 /* None but has to be defined */
|
|
|
|
#ifdef SMP
|
|
#define MAXSMPCPU 16
|
|
#define MAXCPU MAXSMPCPU
|
|
#else
|
|
#define MAXSMPCPU 1
|
|
#define MAXCPU 1
|
|
#endif
|
|
|
|
/*
|
|
* Round p (pointer or byte index) up to a correctly-aligned value for all
|
|
* data types (int, long, ...). The result is u_int and must be cast to
|
|
* any desired pointer type.
|
|
*/
|
|
#define _ALIGNBYTES 7
|
|
#define _ALIGN(p) (((u_int)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
|
|
#define ALIGNED_POINTER(p, t) ((((u_int32_t)(p)) & (sizeof (t) - 1)) == 0)
|
|
|
|
#define ALIGNBYTES _ALIGNBYTES
|
|
#define ALIGN(p) _ALIGN(p)
|
|
|
|
#ifndef CACHE_LINE_SHIFT
|
|
#define CACHE_LINE_SHIFT 6
|
|
#endif
|
|
#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
|
|
|
|
#define NBPG 4096 /* bytes/page */
|
|
#define PGOFSET (NBPG-1) /* byte offset into page */
|
|
#define PGSHIFT 12 /* LOG2(NBPG) */
|
|
|
|
#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */
|
|
#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */
|
|
#define PAGE_MASK (PAGE_SIZE-1)
|
|
#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
|
|
|
|
#define NBSEG 0x400000 /* bytes/segment */
|
|
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
|
|
#define SEGSHIFT 22 /* LOG2(NBSEG) */
|
|
|
|
/* XXXimp: This has moved to vmparam.h */
|
|
/* Also, this differs from the mips2 definition, but likely is better */
|
|
/* since this means the kernel won't chew up TLBs when it is executing */
|
|
/* code */
|
|
#define KERNBASE 0x80000000 /* start of kernel virtual */
|
|
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
|
|
|
|
#define BLKDEV_IOSIZE 2048 /* xxx: Why is this 1/2 page? */
|
|
#define MAXDUMPPGS 1 /* xxx: why is this only one? */
|
|
|
|
/*
|
|
* NOTE: In FreeBSD, Uarea's don't have a fixed address.
|
|
* Therefore, any code imported from OpenBSD which depends on
|
|
* UADDR, UVPN and KERNELSTACK requires porting.
|
|
* XXX: 3 stack pages? Not 4 which would be more efficient from a tlb
|
|
* XXX: point of view.
|
|
*/
|
|
#define KSTACK_PAGES 3 /* kernel stack*/
|
|
#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */
|
|
|
|
#define UPAGES 2
|
|
|
|
/* pages ("clicks") (4096 bytes) to disk blocks */
|
|
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
|
|
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
|
|
|
|
/*
|
|
* Map a ``block device block'' to a file system block.
|
|
* This should be device dependent, and should use the bsize
|
|
* field from the disk label.
|
|
* For now though just use DEV_BSIZE.
|
|
*/
|
|
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
|
|
|
|
/*
|
|
* Conversion macros
|
|
*/
|
|
#define mips_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
|
|
#define mips_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
|
|
#define mips_btop(x) ((unsigned)(x) >> PGSHIFT)
|
|
#define mips_ptob(x) ((unsigned)(x) << PGSHIFT)
|
|
#define round_page mips_round_page
|
|
#define trunc_page mips_trunc_page
|
|
#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
|
|
#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
|
|
|
|
#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
|
|
|
|
#ifndef _KERNEL
|
|
#define DELAY(n) { register int N = (n); while (--N > 0); }
|
|
#endif /* !_KERNEL */
|
|
|
|
#endif /* !_MACHINE_PARAM_H_ */
|