param.h revision 165324
1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 30 * $FreeBSD: head/sys/sparc64/include/param.h 165324 2006-12-18 07:28:59Z kmacy $ 31 */ 32 33/* 34 * Machine dependent constants for sparc64. 35 */ 36 37/* 38 * Round p (pointer or byte index) up to a correctly-aligned value 39 * for all data types (int, long, ...). The result is unsigned int 40 * and must be cast to any desired pointer type. 41 */ 42#ifndef _ALIGNBYTES 43#define _ALIGNBYTES 0xf 44#endif 45#ifndef _ALIGN 46#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) & ~_ALIGNBYTES) 47#endif 48 49#ifndef _NO_NAMESPACE_POLLUTION 50 51#ifndef _MACHINE_PARAM_H_ 52#define _MACHINE_PARAM_H_ 53 54#ifndef MACHINE 55#define MACHINE "sparc64" 56#endif 57#ifndef MACHINE_ARCH 58#define MACHINE_ARCH "sparc64" 59#endif 60#define MID_MACHINE MID_SPARC64 61 62#ifdef SMP 63#define MAXCPU 16 64#else 65#define MAXCPU 1 66#endif /* SMP */ 67 68#define INT_SHIFT 2 69#define PTR_SHIFT 3 70 71#define ALIGNBYTES _ALIGNBYTES 72#define ALIGN(p) _ALIGN(p) 73 74#define PAGE_SHIFT_8K 13 75#define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K) 76#define PAGE_MASK_8K (PAGE_SIZE_8K-1) 77 78#define PAGE_SHIFT_64K 16 79#define PAGE_SIZE_64K (1L<<PAGE_SHIFT_64K) 80#define PAGE_MASK_64K (PAGE_SIZE_64K-1) 81 82#define PAGE_SHIFT_512K 19 83#define PAGE_SIZE_512K (1L<<PAGE_SHIFT_512K) 84#define PAGE_MASK_512K (PAGE_SIZE_512K-1) 85 86#define PAGE_SHIFT_4M 22 87#define PAGE_SIZE_4M (1L<<PAGE_SHIFT_4M) 88#define PAGE_MASK_4M (PAGE_SIZE_4M-1) 89 90#define PAGE_SHIFT_32M 25 91#define PAGE_SIZE_32M (1L<<PAGE_SHIFT_32M) 92#define PAGE_MASK_32M (PAGE_SIZE_32M-1) 93 94#define PAGE_SHIFT_256M 28 95#define PAGE_SIZE_256M (1L<<PAGE_SHIFT_256M) 96#define PAGE_MASK_256M (PAGE_SIZE_256M-1) 97 98#define PAGE_SHIFT_MIN PAGE_SHIFT_8K 99#define PAGE_SIZE_MIN PAGE_SIZE_8K 100#define PAGE_MASK_MIN PAGE_MASK_8K 101#define PAGE_SHIFT PAGE_SHIFT_8K /* LOG2(PAGE_SIZE) */ 102#define PAGE_SIZE PAGE_SIZE_8K /* bytes/page */ 103#define PAGE_MASK PAGE_MASK_8K 104#define PAGE_SHIFT_MAX PAGE_SHIFT_4M 105#define PAGE_SIZE_MAX PAGE_SIZE_4M 106#define PAGE_MASK_MAX PAGE_MASK_4M 107 108#ifndef KSTACK_PAGES 109#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 110#endif 111#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 112#define PCPU_PAGES 1 113 114/* 115 * Ceiling on size of buffer cache (really only effects write queueing, 116 * the VM page cache is not effected), can be changed via 117 * the kern.maxbcache /boot/loader.conf variable. 118 */ 119#ifndef VM_BCACHE_SIZE_MAX 120#define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024) 121#endif 122 123/* 124 * Mach derived conversion macros 125 */ 126#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 127#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 128 129#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 130#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 131 132#define sparc64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 133#define sparc64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 134 135#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 136 137#endif /* !_MACHINE_PARAM_H_ */ 138#endif /* !_NO_NAMESPACE_POLLUTION */ 139