param.h revision 195808
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 195808 2009-07-21 19:06:39Z marius $ 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#define __PCI_BAR_ZERO_VALID 52 53#ifndef _MACHINE_PARAM_H_ 54#define _MACHINE_PARAM_H_ 55 56#ifndef MACHINE 57#define MACHINE "sparc64" 58#endif 59#ifndef MACHINE_ARCH 60#define MACHINE_ARCH "sparc64" 61#endif 62#define MID_MACHINE MID_SPARC64 63 64#if defined(SMP) || defined(KLD_MODULE) 65#define MAXCPU 16 66#else 67#define MAXCPU 1 68#endif /* SMP || KLD_MODULE */ 69 70#define INT_SHIFT 2 71#define PTR_SHIFT 3 72 73#define ALIGNBYTES _ALIGNBYTES 74#define ALIGN(p) _ALIGN(p) 75/* 76 * ALIGNED_POINTER is a boolean macro that checks whether an address 77 * is valid to fetch data elements of type t from on this architecture. 78 * This does not reflect the optimal alignment, just the possibility 79 * (within reasonable limits). 80 */ 81#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof (t) - 1)) == 0) 82 83/* 84 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 85 * architecture. It should be used with appropriate caution. 86 */ 87#define CACHE_LINE_SHIFT 7 88#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 89 90#define PAGE_SHIFT_8K 13 91#define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K) 92#define PAGE_MASK_8K (PAGE_SIZE_8K-1) 93 94#define PAGE_SHIFT_64K 16 95#define PAGE_SIZE_64K (1L<<PAGE_SHIFT_64K) 96#define PAGE_MASK_64K (PAGE_SIZE_64K-1) 97 98#define PAGE_SHIFT_512K 19 99#define PAGE_SIZE_512K (1L<<PAGE_SHIFT_512K) 100#define PAGE_MASK_512K (PAGE_SIZE_512K-1) 101 102#define PAGE_SHIFT_4M 22 103#define PAGE_SIZE_4M (1L<<PAGE_SHIFT_4M) 104#define PAGE_MASK_4M (PAGE_SIZE_4M-1) 105 106#define PAGE_SHIFT_32M 25 107#define PAGE_SIZE_32M (1L<<PAGE_SHIFT_32M) 108#define PAGE_MASK_32M (PAGE_SIZE_32M-1) 109 110#define PAGE_SHIFT_256M 28 111#define PAGE_SIZE_256M (1L<<PAGE_SHIFT_256M) 112#define PAGE_MASK_256M (PAGE_SIZE_256M-1) 113 114#define PAGE_SHIFT_MIN PAGE_SHIFT_8K 115#define PAGE_SIZE_MIN PAGE_SIZE_8K 116#define PAGE_MASK_MIN PAGE_MASK_8K 117#define PAGE_SHIFT PAGE_SHIFT_8K /* LOG2(PAGE_SIZE) */ 118#define PAGE_SIZE PAGE_SIZE_8K /* bytes/page */ 119#define PAGE_MASK PAGE_MASK_8K 120#define PAGE_SHIFT_MAX PAGE_SHIFT_4M 121#define PAGE_SIZE_MAX PAGE_SIZE_4M 122#define PAGE_MASK_MAX PAGE_MASK_4M 123 124#ifndef KSTACK_PAGES 125#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 126#endif 127#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 128#define PCPU_PAGES 1 129 130/* 131 * Ceiling on size of buffer cache (really only effects write queueing, 132 * the VM page cache is not effected), can be changed via 133 * the kern.maxbcache /boot/loader.conf variable. 134 */ 135#ifndef VM_BCACHE_SIZE_MAX 136#define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024) 137#endif 138 139/* 140 * Mach derived conversion macros 141 */ 142#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 143#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 144 145#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 146#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 147 148#define sparc64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 149#define sparc64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 150 151#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 152 153#endif /* !_MACHINE_PARAM_H_ */ 154#endif /* !_NO_NAMESPACE_POLLUTION */ 155