param.h revision 235072
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 235072 2012-05-06 07:20:48Z 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 50#define STACKALIGNBYTES (8 - 1) 51#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 52 53#define __PCI_REROUTE_INTERRUPT 54 55#ifndef MACHINE 56#define MACHINE "arm" 57#endif 58#ifndef MACHINE_ARCH 59#ifdef __ARMEB__ 60#define MACHINE_ARCH "armeb" 61#else 62#define MACHINE_ARCH "arm" 63#endif 64#endif 65#define MID_MACHINE MID_ARM6 66 67#if defined(SMP) || defined(KLD_MODULE) 68#ifndef MAXCPU 69#define MAXCPU 2 70#endif 71#else 72#define MAXCPU 1 73#endif /* SMP || KLD_MODULE */ 74 75#define ALIGNBYTES _ALIGNBYTES 76#define ALIGN(p) _ALIGN(p) 77/* 78 * ALIGNED_POINTER is a boolean macro that checks whether an address 79 * is valid to fetch data elements of type t from on this architecture. 80 * This does not reflect the optimal alignment, just the possibility 81 * (within reasonable limits). 82 */ 83#define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 84 85/* 86 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 87 * architecture. It should be used with appropriate caution. 88 */ 89#define CACHE_LINE_SHIFT 6 90#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 91 92#define PAGE_SHIFT 12 93#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 94#define PAGE_MASK (PAGE_SIZE - 1) 95#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 96 97#define PDR_SHIFT 20 /* log2(NBPDR) */ 98#define NBPDR (1 << PDR_SHIFT) 99#define NPDEPG (1 << (32 - PDR_SHIFT)) 100 101#define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 102 103#ifndef KSTACK_PAGES 104#define KSTACK_PAGES 2 105#endif /* !KSTACK_PAGES */ 106 107#ifndef FPCONTEXTSIZE 108#define FPCONTEXTSIZE (0x100) 109#endif 110 111#ifndef KSTACK_GUARD_PAGES 112#define KSTACK_GUARD_PAGES 1 113#endif /* !KSTACK_GUARD_PAGES */ 114 115#define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE 116#define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) 117#define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) 118#define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10) 119/* 120 * Mach derived conversion macros 121 */ 122#define trunc_page(x) ((x) & ~PAGE_MASK) 123#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 124#define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 125#define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 126 127#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 128#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 129 130#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 131#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 132 133#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 134 135#endif /* !_ARM_INCLUDE_PARAM_H_ */ 136