param.h revision 196994
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 196994 2009-09-08 20:45:40Z phk $ 31 */ 32 33#ifndef _SPARC64_INCLUDE_PARAM_H_ 34#define _SPARC64_INCLUDE_PARAM_H_ 35 36/* 37 * Machine dependent constants for sparc64. 38 */ 39 40#include <machine/_align.h> 41 42#define __PCI_BAR_ZERO_VALID 43 44#ifndef MACHINE 45#define MACHINE "sparc64" 46#endif 47#ifndef MACHINE_ARCH 48#define MACHINE_ARCH "sparc64" 49#endif 50#define MID_MACHINE MID_SPARC64 51 52#if defined(SMP) || defined(KLD_MODULE) 53#define MAXCPU 16 54#else 55#define MAXCPU 1 56#endif /* SMP || KLD_MODULE */ 57 58#define INT_SHIFT 2 59#define PTR_SHIFT 3 60 61#define ALIGNBYTES _ALIGNBYTES 62#define ALIGN(p) _ALIGN(p) 63/* 64 * ALIGNED_POINTER is a boolean macro that checks whether an address 65 * is valid to fetch data elements of type t from on this architecture. 66 * This does not reflect the optimal alignment, just the possibility 67 * (within reasonable limits). 68 */ 69#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof (t) - 1)) == 0) 70 71/* 72 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 73 * architecture. It should be used with appropriate caution. 74 */ 75#define CACHE_LINE_SHIFT 7 76#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 77 78#define PAGE_SHIFT_8K 13 79#define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K) 80#define PAGE_MASK_8K (PAGE_SIZE_8K-1) 81 82#define PAGE_SHIFT_64K 16 83#define PAGE_SIZE_64K (1L<<PAGE_SHIFT_64K) 84#define PAGE_MASK_64K (PAGE_SIZE_64K-1) 85 86#define PAGE_SHIFT_512K 19 87#define PAGE_SIZE_512K (1L<<PAGE_SHIFT_512K) 88#define PAGE_MASK_512K (PAGE_SIZE_512K-1) 89 90#define PAGE_SHIFT_4M 22 91#define PAGE_SIZE_4M (1L<<PAGE_SHIFT_4M) 92#define PAGE_MASK_4M (PAGE_SIZE_4M-1) 93 94#define PAGE_SHIFT_32M 25 95#define PAGE_SIZE_32M (1L<<PAGE_SHIFT_32M) 96#define PAGE_MASK_32M (PAGE_SIZE_32M-1) 97 98#define PAGE_SHIFT_256M 28 99#define PAGE_SIZE_256M (1L<<PAGE_SHIFT_256M) 100#define PAGE_MASK_256M (PAGE_SIZE_256M-1) 101 102#define PAGE_SHIFT_MIN PAGE_SHIFT_8K 103#define PAGE_SIZE_MIN PAGE_SIZE_8K 104#define PAGE_MASK_MIN PAGE_MASK_8K 105#define PAGE_SHIFT PAGE_SHIFT_8K /* LOG2(PAGE_SIZE) */ 106#define PAGE_SIZE PAGE_SIZE_8K /* bytes/page */ 107#define PAGE_MASK PAGE_MASK_8K 108#define PAGE_SHIFT_MAX PAGE_SHIFT_4M 109#define PAGE_SIZE_MAX PAGE_SIZE_4M 110#define PAGE_MASK_MAX PAGE_MASK_4M 111 112#ifndef KSTACK_PAGES 113#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 114#endif 115#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 116#define PCPU_PAGES 1 117 118/* 119 * Ceiling on size of buffer cache (really only effects write queueing, 120 * the VM page cache is not effected), can be changed via 121 * the kern.maxbcache /boot/loader.conf variable. 122 */ 123#ifndef VM_BCACHE_SIZE_MAX 124#define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024) 125#endif 126 127/* 128 * Mach derived conversion macros 129 */ 130#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 131#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 132 133#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 134#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 135 136#define sparc64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 137#define sparc64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 138 139#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 140 141#endif /* !_SPARC64_INCLUDE_PARAM_H_ */ 142