param.h revision 192331
1139749Simp/*- 254134Swpaul * Copyright (c) 2002 David E. O'Brien. All rights reserved. 354134Swpaul * Copyright (c) 1992, 1993 454134Swpaul * The Regents of the University of California. All rights reserved. 554134Swpaul * 654134Swpaul * This code is derived from software contributed to Berkeley by 754134Swpaul * the Systems Programming Group of the University of Utah Computer 854134Swpaul * Science Department and Ralph Campbell. 954134Swpaul * 1054134Swpaul * Redistribution and use in source and binary forms, with or without 1154134Swpaul * modification, are permitted provided that the following conditions 1254134Swpaul * are met: 1354134Swpaul * 1. Redistributions of source code must retain the above copyright 1454134Swpaul * notice, this list of conditions and the following disclaimer. 1554134Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1654134Swpaul * notice, this list of conditions and the following disclaimer in the 1754134Swpaul * documentation and/or other materials provided with the distribution. 1854134Swpaul * 3. All advertising materials mentioning features or use of this software 1954134Swpaul * must display the following acknowledgement: 2054134Swpaul * This product includes software developed by the University of 2154134Swpaul * California, Berkeley and its contributors. 2254134Swpaul * 4. Neither the name of the University nor the names of its contributors 2354134Swpaul * may be used to endorse or promote products derived from this software 2454134Swpaul * without specific prior written permission. 2554134Swpaul * 2654134Swpaul * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2754134Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2854134Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2954134Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3054134Swpaul * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3154134Swpaul * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3254134Swpaul * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33119418Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34119418Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35119418Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3654134Swpaul * SUCH DAMAGE. 3754134Swpaul * 38183505Smarius * @(#)param.h 8.1 (Berkeley) 6/10/93 3954134Swpaul * $FreeBSD: head/sys/amd64/include/param.h 192331 2009-05-18 19:33:59Z jhb $ 40183505Smarius */ 4154134Swpaul 4254134Swpaul/* 4354134Swpaul * Machine dependent constants for AMD64. 4454134Swpaul */ 4554134Swpaul 4654134Swpaul/* 4754134Swpaul * Round p (pointer or byte index) up to a correctly-aligned value 4854134Swpaul * for all data types (int, long, ...). The result is u_long and 4954134Swpaul * must be cast to any desired pointer type. 5074914Sjhb * 5154134Swpaul * ALIGNED_POINTER is a boolean macro that checks whether an address 5267365Sjhb * is valid to fetch data elements of type t from on this architecture. 5354134Swpaul * This does not reflect the optimal alignment, just the possibility 5454134Swpaul * (within reasonable limits). 5554134Swpaul * 5654134Swpaul */ 5754134Swpaul#ifndef _ALIGNBYTES 5854134Swpaul#define _ALIGNBYTES (sizeof(long) - 1) 5954134Swpaul#endif 6054134Swpaul#ifndef _ALIGN 61109514Sobrien#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES) 6254134Swpaul#endif 6354134Swpaul#ifndef _ALIGNED_POINTER 6454134Swpaul#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 6554134Swpaul#endif 66119285Simp 6754134Swpaul#ifndef _NO_NAMESPACE_POLLUTION 68151435Simp 6954134Swpaul#define __HAVE_ACPI 7054134Swpaul#define __PCI_REROUTE_INTERRUPT 7154134Swpaul 7254134Swpaul#ifndef _MACHINE_PARAM_H_ 7354134Swpaul#define _MACHINE_PARAM_H_ 7454134Swpaul 7554134Swpaul#ifndef MACHINE 7654134Swpaul#define MACHINE "amd64" 7754134Swpaul#endif 7854134Swpaul#ifndef MACHINE_ARCH 7954134Swpaul#define MACHINE_ARCH "amd64" 8054134Swpaul#endif 8154134Swpaul 8254577Swpaul#if defined(SMP) || defined(KLD_MODULE) 8354577Swpaul#define MAXCPU 32 84183505Smarius#else 8554577Swpaul#define MAXCPU 1 8654577Swpaul#endif 8754577Swpaul 8854577Swpaul#define ALIGNBYTES _ALIGNBYTES 89105135Salfred#define ALIGN(p) _ALIGN(p) 90105135Salfred#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) 9154134Swpaul 9254134Swpaul/* 9354134Swpaul * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 9454134Swpaul * architecture. It should be used with appropriate caution. 9554134Swpaul */ 9695722Sphk#define CACHE_LINE_SHIFT 7 9754134Swpaul#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 98227908Smarius 9954134Swpaul/* Size of the level 1 page table units */ 10054134Swpaul#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 10154134Swpaul#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */ 10254134Swpaul#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 10354134Swpaul#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 10454134Swpaul#define PAGE_MASK (PAGE_SIZE-1) 10554134Swpaul/* Size of the level 2 page directory units */ 10654134Swpaul#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 10754134Swpaul#define NPDEPGSHIFT 9 /* LOG2(NPDEPG) */ 10854134Swpaul#define PDRSHIFT 21 /* LOG2(NBPDR) */ 10954134Swpaul#define NBPDR (1<<PDRSHIFT) /* bytes/page dir */ 11054134Swpaul#define PDRMASK (NBPDR-1) 11192739Salfred/* Size of the level 3 page directory pointer table units */ 11292739Salfred#define NPDPEPG (PAGE_SIZE/(sizeof (pdp_entry_t))) 11392739Salfred#define NPDPEPGSHIFT 9 /* LOG2(NPDPEPG) */ 11496026Sphk#define PDPSHIFT 30 /* LOG2(NBPDP) */ 11554134Swpaul#define NBPDP (1<<PDPSHIFT) /* bytes/page dir ptr table */ 116221407Smarius#define PDPMASK (NBPDP-1) 117221407Smarius/* Size of the level 4 page-map level-4 table units */ 118221407Smarius#define NPML4EPG (PAGE_SIZE/(sizeof (pml4_entry_t))) 119221407Smarius#define NPML4EPGSHIFT 9 /* LOG2(NPML4EPG) */ 120221407Smarius#define PML4SHIFT 39 /* LOG2(NBPML4) */ 121221407Smarius#define NBPML4 (1ul<<PML4SHIFT)/* bytes/page map lev4 table */ 122105135Salfred#define PML4MASK (NBPML4-1) 123150763Simp 12454134Swpaul#define IOPAGES 2 /* pages of i/o permission bitmap */ 12554134Swpaul 12654134Swpaul#ifndef KSTACK_PAGES 12754134Swpaul#define KSTACK_PAGES 4 /* pages of kstack (with pcb) */ 12854134Swpaul#endif 12954134Swpaul#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 13054134Swpaul 13154134Swpaul/* 13254134Swpaul * Ceiling on amount of swblock kva space, can be changed via 13354134Swpaul * the kern.maxswzone /boot/loader.conf variable. 13454134Swpaul */ 135183505Smarius#ifndef VM_SWZONE_SIZE_MAX 13654134Swpaul#define VM_SWZONE_SIZE_MAX (32 * 1024 * 1024) 13754134Swpaul#endif 13854134Swpaul 139160907Syongari/* 14054134Swpaul * Ceiling on size of buffer cache (really only effects write queueing, 14154134Swpaul * the VM page cache is not effected), can be changed via 142105135Salfred * the kern.maxbcache /boot/loader.conf variable. 143150763Simp */ 14454134Swpaul#ifndef VM_BCACHE_SIZE_MAX 14554134Swpaul#define VM_BCACHE_SIZE_MAX (1024 * 1024 * 1024) 14654134Swpaul#endif 147159201Sjhb 14854134Swpaul/* 14954134Swpaul * Mach derived conversion macros 15054134Swpaul */ 151221407Smarius#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 152221407Smarius#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 15354134Swpaul#define trunc_2mpage(x) ((unsigned long)(x) & ~PDRMASK) 154221407Smarius#define round_2mpage(x) ((((unsigned long)(x)) + PDRMASK) & ~PDRMASK) 155221407Smarius#define trunc_1gpage(x) ((unsigned long)(x) & ~PDPMASK) 15654134Swpaul 15754134Swpaul#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 15854134Swpaul#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 159159201Sjhb 160159201Sjhb#define amd64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 16154577Swpaul#define amd64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 16254134Swpaul 163183505Smarius#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 16454134Swpaul 16554134Swpaul#endif /* !_MACHINE_PARAM_H_ */ 166183505Smarius#endif /* !_NO_NAMESPACE_POLLUTION */ 16766681Swpaul