1 /* $OpenBSD: param.h,v 1.29 2011/04/07 15:45:17 miod Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department and Ralph Campbell. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: machparam.h 1.11 89/08/14 37 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 38 */ 39 40 #ifndef _MIPS64_PARAM_H_ 41 #define _MIPS64_PARAM_H_ 42 43 #ifdef _KERNEL 44 #include <machine/cpu.h> 45 #endif 46 47 /* 48 * Round p (pointer or byte index) up to a correctly-aligned value for all 49 * data types (int, long, ...). The result is u_long and must be cast to 50 * any desired pointer type. 51 */ 52 #define ALIGNBYTES 7 53 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) 54 #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof (t) - 1)) == 0) 55 56 #define PAGE_SIZE (1 << PAGE_SHIFT) 57 #define PAGE_MASK (PAGE_SIZE - 1) 58 59 #define NBPG PAGE_SIZE 60 #define PGOFSET PAGE_MASK 61 #define PGSHIFT PAGE_SHIFT 62 63 #define KERNBASE 0xffffffff80000000L /* start of kernel virtual */ 64 65 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 66 #define DEV_BSIZE (1 << DEV_BSHIFT) 67 #define BLKDEV_IOSIZE 2048 68 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 69 70 #define USPACE (16384) 71 #ifdef _KERNEL 72 #define UPAGES (USPACE >> PAGE_SHIFT) 73 #if PAGE_SHIFT > 12 74 #define USPACE_ALIGN 0 75 #else 76 #define USPACE_ALIGN (2 * PAGE_SIZE) /* align to an even TLB boundary */ 77 #endif 78 #endif /* _KERNEL */ 79 80 /* 81 * Constants related to network buffer management. 82 */ 83 #define NMBCLUSTERS 4096 /* map size, max cluster allocation */ 84 85 #ifdef _KERNEL 86 #if PAGE_SHIFT > 12 87 #define MSGBUFSIZE PAGE_SIZE 88 #else 89 #define MSGBUFSIZE 8192 90 #endif 91 92 /* Default malloc arena size */ 93 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 94 #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 95 #endif /* _KERNEL */ 96 97 /* pages ("clicks") to disk blocks */ 98 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 99 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 100 101 /* bytes to disk blocks */ 102 #define btodb(x) ((x) >> DEV_BSHIFT) 103 #define dbtob(x) ((x) << DEV_BSHIFT) 104 105 #ifdef _KERNEL 106 #ifndef _LOCORE 107 #define DELAY(n) delay(n) 108 void delay(int); 109 #endif 110 #endif /* _KERNEL */ 111 112 #endif /* !_MIPS64_PARAM_H_ */ 113