param.h revision 269956
1/*- 2 * Copyright (c) 2001 David E. O'Brien 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 38 * $FreeBSD: head/sys/arm/include/param.h 269956 2014-08-14 04:20:13Z imp $ 39 */ 40 41#ifndef _ARM_INCLUDE_PARAM_H_ 42#define _ARM_INCLUDE_PARAM_H_ 43 44/* 45 * Machine dependent constants for StrongARM 46 */ 47 48#include <machine/_align.h> 49#include <machine/acle-compat.h> 50 51#define STACKALIGNBYTES (8 - 1) 52#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 53 54#define __PCI_REROUTE_INTERRUPT 55 56#if __ARM_ARCH >= 6 57#define _V6_SUFFIX "v6" 58#else 59#define _V6_SUFFIX "" 60#endif 61 62#ifdef __ARM_PCS_VFP 63#define _HF_SUFFIX "hf" 64#else 65#define _HF_SUFFIX "" 66#endif 67 68#ifdef __ARM_BIG_ENDIAN 69#define _EB_SUFFIX "eb" 70#else 71#define _EB_SUFFIX "" 72#endif 73 74#ifndef MACHINE 75#define MACHINE "arm" 76#endif 77#ifndef MACHINE_ARCH 78#define MACHINE_ARCH "arm" _V6_SUFFIX _HF_SUFFIX _EB_SUFFIX 79#endif 80 81#if defined(SMP) || defined(KLD_MODULE) 82#ifndef MAXCPU 83#define MAXCPU 4 84#endif 85#else 86#define MAXCPU 1 87#endif /* SMP || KLD_MODULE */ 88 89#ifndef MAXMEMDOM 90#define MAXMEMDOM 1 91#endif 92 93#define ALIGNBYTES _ALIGNBYTES 94#define ALIGN(p) _ALIGN(p) 95/* 96 * ALIGNED_POINTER is a boolean macro that checks whether an address 97 * is valid to fetch data elements of type t from on this architecture. 98 * This does not reflect the optimal alignment, just the possibility 99 * (within reasonable limits). 100 */ 101#define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 102 103/* 104 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 105 * architecture. It should be used with appropriate caution. 106 */ 107#define CACHE_LINE_SHIFT 6 108#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 109 110#define PAGE_SHIFT 12 111#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 112#define PAGE_MASK (PAGE_SIZE - 1) 113#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 114 115#define PDR_SHIFT 20 /* log2(NBPDR) */ 116#define NBPDR (1 << PDR_SHIFT) 117#define PDRMASK (NBPDR - 1) 118#define NPDEPG (1 << (32 - PDR_SHIFT)) 119 120#define MAXPAGESIZES 2 /* maximum number of supported page sizes */ 121 122#ifndef KSTACK_PAGES 123#define KSTACK_PAGES 2 124#endif /* !KSTACK_PAGES */ 125 126#ifndef FPCONTEXTSIZE 127#define FPCONTEXTSIZE (0x100) 128#endif 129 130#ifndef KSTACK_GUARD_PAGES 131#define KSTACK_GUARD_PAGES 1 132#endif /* !KSTACK_GUARD_PAGES */ 133 134#define USPACE_SVC_STACK_TOP (KSTACK_PAGES * PAGE_SIZE) 135 136/* 137 * Mach derived conversion macros 138 */ 139#define trunc_page(x) ((x) & ~PAGE_MASK) 140#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 141#define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK) 142#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 143 144#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 145#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 146 147#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 148#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 149 150#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 151 152#endif /* !_ARM_INCLUDE_PARAM_H_ */ 153