param.h revision 1.9
1/* $OpenBSD: param.h,v 1.9 2013/03/23 16:12:27 deraadt Exp $ */ 2 3/*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved. 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#ifndef _SH_PARAM_H_ 37#define _SH_PARAM_H_ 38 39#define _MACHINE_ARCH sh 40#define MACHINE_ARCH "sh" 41 42#ifndef MID_MACHINE 43#define MID_MACHINE MID_SH3 44#endif 45 46#if defined(_KERNEL) && !defined(_LOCORE) 47#include <sh/cpu.h> 48#endif 49 50#define ALIGNBYTES _ALIGNBYTES 51#define ALIGN(p) _ALIGN(p) 52#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) 53 54/* 55 * We use 4K pages on the sh3/sh4. Override the PAGE_* definitions 56 * to be compile-time constants. 57 */ 58#define PAGE_SHIFT 12 59#define PAGE_SIZE (1 << PAGE_SHIFT) 60#define PAGE_MASK (PAGE_SIZE - 1) 61#define PGSHIFT PAGE_SHIFT 62#define PGOFSET PAGE_MASK 63 64#ifdef _KERNEL 65 66#define NBPG PAGE_SIZE 67 68#endif 69 70/* 71 * u-space. 72 */ 73#define UPAGES 3 /* pages of u-area */ 74#define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ 75#define USPACE_ALIGN (0) 76 77#if UPAGES == 1 78#error "too small u-area" 79#elif UPAGES == 2 80#define P1_STACK /* kernel stack is P1-area */ 81#else 82#undef P1_STACK /* kernel stack is P3-area */ 83#endif 84 85#ifdef _KERNEL 86 87#define NMBCLUSTERS 4096 /* map size, max cluster allocation */ 88 89#ifndef MSGBUFSIZE 90#define MSGBUFSIZE PAGE_SIZE /* default message buffer size */ 91#endif 92 93/* 94 * Maximum size of the kernel malloc arena in PAGE_SIZE-sized 95 * logical pages. 96 */ 97#define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT) 98 99#endif /* _KERNEL */ 100 101#endif /* _SH_PARAM_H_ */ 102