param.h revision 191278
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 191278 2009-04-19 21:26:36Z rwatson $ 39 */ 40 41/* 42 * Machine dependent constants for StrongARM 43 */ 44 45/* 46 * Round p (pointer or byte index) up to a correctly-aligned value 47 * for all data types (int, long, ...). The result is unsigned int 48 * and must be cast to any desired pointer type. 49 */ 50#ifndef _ALIGNBYTES 51#define _ALIGNBYTES (sizeof(int) - 1) 52#endif 53#ifndef _ALIGN 54#define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES) 55#endif 56 57#define STACKALIGNBYTES (8 - 1) 58#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 59 60#ifndef _NO_NAMESPACE_POLLUTION 61 62#define __PCI_REROUTE_INTERRUPT 63 64#ifndef _MACHINE_PARAM_H_ 65#define _MACHINE_PARAM_H_ 66 67#ifndef MACHINE 68#define MACHINE "arm" 69#endif 70#ifndef MACHINE_ARCH 71#define MACHINE_ARCH "arm" 72#endif 73#define MID_MACHINE MID_ARM6 74 75#if defined(SMP) || defined(KLD_MODULE) 76#define MAXCPU 2 77#else 78#define MAXCPU 1 79#endif /* SMP || KLD_MODULE */ 80 81#define ALIGNBYTES _ALIGNBYTES 82#define ALIGN(p) _ALIGN(p) 83 84/* 85 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 86 * architecture. It should be used with appropriate caution. 87 */ 88#ifndef CACHE_LINE_SHIFT 89#define CACHE_LINE_SHIFT 6 90#endif 91#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 92 93#define PAGE_SHIFT 12 94#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 95#define PAGE_MASK (PAGE_SIZE - 1) 96#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 97 98#define PDR_SHIFT 20 /* log2(NBPDR) */ 99#define NBPDR (1 << PDR_SHIFT) 100#define NPDEPG (1 << (32 - PDR_SHIFT)) 101 102#ifndef KSTACK_PAGES 103#define KSTACK_PAGES 2 104#endif /* !KSTACK_PAGES */ 105 106#ifndef FPCONTEXTSIZE 107#define FPCONTEXTSIZE (0x100) 108#endif 109 110#ifndef KSTACK_GUARD_PAGES 111#define KSTACK_GUARD_PAGES 1 112#endif /* !KSTACK_GUARD_PAGES */ 113 114#define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE 115#define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) 116#define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) 117#define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10) 118/* 119 * Mach derived conversion macros 120 */ 121#define trunc_page(x) ((x) & ~PAGE_MASK) 122#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 123#define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 124#define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 125 126#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 127#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 128 129#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 130#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 131 132#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 133 134#endif /* !_MACHINE_PARAM_H_ */ 135#endif /* !_NO_NAMESPACE_POLLUTION */ 136