param.h revision 224232
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 224232 2011-07-20 18:51:18Z marius $ 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#ifndef MAXCPU 54#define MAXCPU 64 55#endif 56#else 57#define MAXCPU 1 58#endif /* SMP || KLD_MODULE */ 59 60#define INT_SHIFT 2 61#define PTR_SHIFT 3 62 63#define ALIGNBYTES _ALIGNBYTES 64#define ALIGN(p) _ALIGN(p) 65/* 66 * ALIGNED_POINTER is a boolean macro that checks whether an address 67 * is valid to fetch data elements of type t from on this architecture. 68 * This does not reflect the optimal alignment, just the possibility 69 * (within reasonable limits). 70 */ 71#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof (t) - 1)) == 0) 72 73/* 74 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 75 * architecture. It should be used with appropriate caution. 76 */ 77#define CACHE_LINE_SHIFT 7 78#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 79 80#define PAGE_SHIFT_8K 13 81#define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K) 82#define PAGE_MASK_8K (PAGE_SIZE_8K-1) 83 84#define PAGE_SHIFT_64K 16 85#define PAGE_SIZE_64K (1L<<PAGE_SHIFT_64K) 86#define PAGE_MASK_64K (PAGE_SIZE_64K-1) 87 88#define PAGE_SHIFT_512K 19 89#define PAGE_SIZE_512K (1L<<PAGE_SHIFT_512K) 90#define PAGE_MASK_512K (PAGE_SIZE_512K-1) 91 92#define PAGE_SHIFT_4M 22 93#define PAGE_SIZE_4M (1L<<PAGE_SHIFT_4M) 94#define PAGE_MASK_4M (PAGE_SIZE_4M-1) 95 96#define PAGE_SHIFT_32M 25 97#define PAGE_SIZE_32M (1L<<PAGE_SHIFT_32M) 98#define PAGE_MASK_32M (PAGE_SIZE_32M-1) 99 100#define PAGE_SHIFT_256M 28 101#define PAGE_SIZE_256M (1L<<PAGE_SHIFT_256M) 102#define PAGE_MASK_256M (PAGE_SIZE_256M-1) 103 104#define PAGE_SHIFT_MIN PAGE_SHIFT_8K 105#define PAGE_SIZE_MIN PAGE_SIZE_8K 106#define PAGE_MASK_MIN PAGE_MASK_8K 107#define PAGE_SHIFT PAGE_SHIFT_8K /* LOG2(PAGE_SIZE) */ 108#define PAGE_SIZE PAGE_SIZE_8K /* bytes/page */ 109#define PAGE_MASK PAGE_MASK_8K 110#define PAGE_SHIFT_MAX PAGE_SHIFT_4M 111#define PAGE_SIZE_MAX PAGE_SIZE_4M 112#define PAGE_MASK_MAX PAGE_MASK_4M 113 114#define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 115 116#ifndef KSTACK_PAGES 117#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 118#endif 119#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 120#define PCPU_PAGES 1 121 122/* 123 * Ceiling on size of buffer cache (really only effects write queueing, 124 * the VM page cache is not effected), can be changed via 125 * the kern.maxbcache /boot/loader.conf variable. 126 */ 127#ifndef VM_BCACHE_SIZE_MAX 128#define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024) 129#endif 130 131/* 132 * Mach derived conversion macros 133 */ 134#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 135#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 136 137#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 138#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 139 140#define sparc64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 141#define sparc64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 142 143#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 144 145#endif /* !_SPARC64_INCLUDE_PARAM_H_ */ 146