vmparam.h revision 106486
166458Sdfr/* $FreeBSD: head/sys/ia64/include/vmparam.h 106486 2002-11-06 04:47:38Z marcel $ */ 266458Sdfr/* From: NetBSD: vmparam.h,v 1.6 1997/09/23 23:23:23 mjacob Exp */ 396912Smarcel#ifndef _MACHINE_VMPARAM_H 496912Smarcel#define _MACHINE_VMPARAM_H 566458Sdfr/* 666458Sdfr * Copyright (c) 1988 University of Utah. 766458Sdfr * Copyright (c) 1992, 1993 866458Sdfr * The Regents of the University of California. All rights reserved. 966458Sdfr * 1066458Sdfr * This code is derived from software contributed to Berkeley by 1166458Sdfr * the Systems Programming Group of the University of Utah Computer 1266458Sdfr * Science Department and Ralph Campbell. 1366458Sdfr * 1466458Sdfr * Redistribution and use in source and binary forms, with or without 1566458Sdfr * modification, are permitted provided that the following conditions 1666458Sdfr * are met: 1766458Sdfr * 1. Redistributions of source code must retain the above copyright 1866458Sdfr * notice, this list of conditions and the following disclaimer. 1966458Sdfr * 2. Redistributions in binary form must reproduce the above copyright 2066458Sdfr * notice, this list of conditions and the following disclaimer in the 2166458Sdfr * documentation and/or other materials provided with the distribution. 2266458Sdfr * 3. All advertising materials mentioning features or use of this software 2366458Sdfr * must display the following acknowledgement: 2466458Sdfr * This product includes software developed by the University of 2566458Sdfr * California, Berkeley and its contributors. 2666458Sdfr * 4. Neither the name of the University nor the names of its contributors 2766458Sdfr * may be used to endorse or promote products derived from this software 2866458Sdfr * without specific prior written permission. 2966458Sdfr * 3066458Sdfr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 3166458Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 3266458Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3366458Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3466458Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3566458Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3666458Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3766458Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3866458Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3966458Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 4066458Sdfr * SUCH DAMAGE. 4166458Sdfr * 4266458Sdfr * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 4366458Sdfr * 4466458Sdfr * @(#)vmparam.h 8.2 (Berkeley) 4/22/94 4566458Sdfr */ 4666458Sdfr 4766458Sdfr/* 4896912Smarcel * Machine dependent constants for ia64. 4966458Sdfr */ 5066458Sdfr/* 5166458Sdfr * USRTEXT is the start of the user text/data space, while USRSTACK 5266458Sdfr * is the top (end) of the user stack. Immediately above the user stack 5366458Sdfr * resides the user structure, which is UPAGES long and contains the 5466458Sdfr * kernel stack. 5566458Sdfr */ 5666458Sdfr#define USRTEXT CLBYTES 5766633Sdfr#define USRSTACK VM_MAXUSER_ADDRESS 5866458Sdfr 5966458Sdfr/* 6066458Sdfr * Virtual memory related constants, all in bytes 6166458Sdfr */ 6266458Sdfr#ifndef MAXTSIZ 6366458Sdfr#define MAXTSIZ (1<<30) /* max text size (1G) */ 6466458Sdfr#endif 6566458Sdfr#ifndef DFLDSIZ 6666458Sdfr#define DFLDSIZ (1<<27) /* initial data size (128M) */ 6766458Sdfr#endif 6866458Sdfr#ifndef MAXDSIZ 6966458Sdfr#define MAXDSIZ (1<<30) /* max data size (1G) */ 7066458Sdfr#endif 7166458Sdfr#ifndef DFLSSIZ 7266458Sdfr#define DFLSSIZ (1<<21) /* initial stack size (2M) */ 7366458Sdfr#endif 7466458Sdfr#ifndef MAXSSIZ 7592670Speter#define MAXSSIZ (1<<28) /* max stack size (256M) */ 7666458Sdfr#endif 7766458Sdfr#ifndef SGROWSIZ 7866458Sdfr#define SGROWSIZ (128UL*1024) /* amount to grow stack */ 7966458Sdfr#endif 8066458Sdfr 8166458Sdfr/* 8266458Sdfr * PTEs for mapping user space into the kernel for phyio operations. 8366458Sdfr * 64 pte's are enough to cover 8 disks * MAXBSIZE. 8466458Sdfr */ 8566458Sdfr#ifndef USRIOSIZE 8666458Sdfr#define USRIOSIZE 64 8766458Sdfr#endif 8866458Sdfr 8966458Sdfr/* 9066458Sdfr * Boundary at which to place first MAPMEM segment if not explicitly 9166458Sdfr * specified. Should be a power of two. This allows some slop for 9266458Sdfr * the data segment to grow underneath the first mapped segment. 9366458Sdfr */ 9466458Sdfr#define MMSEG 0x200000 9566458Sdfr 9666458Sdfr/* 9766458Sdfr * The size of the clock loop. 9866458Sdfr */ 9966458Sdfr#define LOOPPAGES (maxfree - firstfree) 10066458Sdfr 10166458Sdfr/* 10266458Sdfr * The time for a process to be blocked before being very swappable. 10366458Sdfr * This is a number of seconds which the system takes as being a non-trivial 10466458Sdfr * amount of real time. You probably shouldn't change this; 10566458Sdfr * it is used in subtle ways (fractions and multiples of it are, that is, like 10666458Sdfr * half of a ``long time'', almost a long time, etc.) 10766458Sdfr * It is related to human patience and other factors which don't really 10866458Sdfr * change over time. 10966458Sdfr */ 11066458Sdfr#define MAXSLP 20 11166458Sdfr 11266458Sdfr/* 11366458Sdfr * A swapped in process is given a small amount of core without being bothered 11466458Sdfr * by the page replacement algorithm. Basically this says that if you are 11566458Sdfr * swapped in you deserve some resources. We protect the last SAFERSS 11666458Sdfr * pages against paging and will just swap you out rather than paging you. 11766458Sdfr * Note that each process has at least UPAGES+CLSIZE pages which are not 11866458Sdfr * paged anyways, in addition to SAFERSS. 11966458Sdfr */ 12066458Sdfr#define SAFERSS 10 /* nominal ``small'' resident set size 12166458Sdfr protected against replacement */ 12266458Sdfr 12366458Sdfr/* 124106486Smarcel * We need region 7 virtual addresses for pagetables. 125106486Smarcel */ 126106486Smarcel#define UMA_MD_SMALL_ALLOC 127106486Smarcel 128106486Smarcel/* 12996912Smarcel * Manipulating region bits of an address. 13096912Smarcel */ 13196912Smarcel#define IA64_RR_BASE(n) (((u_int64_t) (n)) << 61) 13296912Smarcel#define IA64_RR_MASK(x) ((x) & ((1L << 61) - 1)) 13396912Smarcel 13496912Smarcel#define IA64_PHYS_TO_RR6(x) ((x) | IA64_RR_BASE(6)) 13596912Smarcel#define IA64_PHYS_TO_RR7(x) ((x) | IA64_RR_BASE(7)) 13696912Smarcel 13796912Smarcel/* 13866458Sdfr * Mach derived constants 13966458Sdfr */ 14066458Sdfr 14166458Sdfr/* user/kernel map constants */ 14266458Sdfr#define VM_MIN_ADDRESS 0 14366458Sdfr#define VM_MAXUSER_ADDRESS IA64_RR_BASE(5) 14466458Sdfr#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 14566458Sdfr#define VM_MIN_KERNEL_ADDRESS IA64_RR_BASE(5) 14666458Sdfr#define VM_MAX_KERNEL_ADDRESS (IA64_RR_BASE(6) - 1) 14766458Sdfr 14896912Smarcel#define KERNBASE (VM_MIN_KERNEL_ADDRESS) 14996912Smarcel 15066458Sdfr/* virtual sizes (bytes) for various kernel submaps */ 15166458Sdfr#ifndef VM_KMEM_SIZE 15266458Sdfr#define VM_KMEM_SIZE (12 * 1024 * 1024) 15366458Sdfr#endif 15466458Sdfr 15566458Sdfr/* 15666458Sdfr * How many physical pages per KVA page allocated. 15766458Sdfr * min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX) 15866458Sdfr * is the total KVA space allocated for kmem_map. 15966458Sdfr */ 16066458Sdfr#ifndef VM_KMEM_SIZE_SCALE 16166458Sdfr#define VM_KMEM_SIZE_SCALE (4) /* XXX 8192 byte pages */ 16266458Sdfr#endif 16366458Sdfr 16466458Sdfr/* initial pagein size of beginning of executable file */ 16566458Sdfr#ifndef VM_INITIAL_PAGEIN 16666458Sdfr#define VM_INITIAL_PAGEIN 16 16766458Sdfr#endif 16866458Sdfr 16996912Smarcel#endif /* !_MACHINE_VMPARAM_H */ 170