vmparam.h revision 1.3
1/* $NetBSD: vmparam.h,v 1.3 2011/01/18 01:02:54 matt Exp $ */ 2/*- 3 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects 8 * Agency and which was developed by Matt Thomas of 3am Software Foundry. 9 * 10 * This material is based upon work supported by the Defense Advanced Research 11 * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under 12 * Contract No. N66001-09-C-2073. 13 * Approved for Public Release, Distribution Unlimited 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37#ifndef _POWERPC_BOOKE_VMPARAM_H_ 38#define _POWERPC_BOOKE_VMPARAM_H_ 39 40/* 41 * Most of the definitions in this can be overriden by a machine-specific 42 * vmparam.h if required. Otherwise a port can just include this file 43 * get the right thing to happen. 44 */ 45 46/* 47 * BookE processors have 4K pages. Override the PAGE_* definitions to be 48 * compile-time constants. 49 */ 50#define PAGE_SHIFT 12 51#define PAGE_SIZE (1 << PAGE_SHIFT) 52#define PAGE_MASK (PAGE_SIZE - 1) 53 54#ifndef USRSTACK 55#define USRSTACK VM_MAXUSER_ADDRESS 56#endif 57 58#ifndef MAXTSIZ 59#define MAXTSIZ (2*256*1024*1024) /* maximum text size */ 60#endif 61 62#ifndef MAXDSIZ 63#define MAXDSIZ (13*256*1024*1024U) /* maximum data size */ 64#endif 65 66#ifndef MAXSSIZ 67#define MAXSSIZ (1*256*1024*1024-PAGE_SIZE) /* maximum stack size */ 68#endif 69 70#ifndef DFLDSIZ 71#define DFLDSIZ (256*1024*1024) /* default data size */ 72#endif 73 74#ifndef DFLSSIZ 75#define DFLSSIZ (2*1024*1024) /* default stack size */ 76#endif 77 78/* 79 * Default number of pages in the user raw I/O map. 80 */ 81#ifndef USRIOSIZE 82#define USRIOSIZE 1024 83#endif 84 85/* 86 * The number of seconds for a process to be blocked before being 87 * considered very swappable. 88 */ 89#ifndef MAXSLP 90#define MAXSLP 20 91#endif 92 93/* 94 * Some system constants 95 */ 96 97#define VM_MIN_ADDRESS ((vaddr_t) 0) 98#define VM_MAXUSER_ADDRESS ((vaddr_t) /* -32768 */ 0x7fff8000) 99#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 100#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0xe4000000) 101#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xfefff000) 102 103/* 104 * The address to which unspecified mapping requests default 105 * Put the stack in it's own segment and start mmaping at the 106 * top of the next lower segment. 107 */ 108#ifdef _KERNEL_OPT 109#include "opt_uvm.h" 110#endif 111#define __USE_TOPDOWN_VM 112#define VM_DEFAULT_ADDRESS(da, sz) \ 113 ((VM_MAXUSER_ADDRESS - MAXSSIZ) - round_page(sz)) 114 115#ifndef VM_PHYSSEG_MAX 116#define VM_PHYSSEG_MAX 16 117#endif 118#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 119 120#ifndef VM_PHYS_SIZE 121#define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 122#endif 123 124#define VM_NFREELIST 2 /* 16 distinct memory segments */ 125#define VM_FREELIST_DEFAULT 0 126#define VM_FREELIST_FIRST16 1 127#define VM_FREELIST_MAX 2 128 129#ifndef VM_NFREELIST 130#define VM_NFREELIST 16 /* 16 distinct memory segments */ 131#define VM_FREELIST_DEFAULT 0 132#define VM_FREELIST_MAX 1 133#endif 134 135#define __HAVE_VM_PAGE_MD 136#ifndef _LOCORE 137 138typedef struct pv_entry { 139 struct pv_entry *pv_next; 140 struct pmap *pv_pmap; 141 vaddr_t pv_va; 142} *pv_entry_t; 143 144#define VM_PAGE_MD_REFERENCED 0x0001 /* page has been recently referenced */ 145#define VM_PAGE_MD_MODIFIED 0x0002 /* page has been modified */ 146#define VM_PAGE_MD_POOLPAGE 0x0004 /* page is used as a poolpage */ 147#define VM_PAGE_MD_EXECPAGE 0x0008 /* page is exec mapped */ 148#if 0 149#define VM_PAGE_MD_UNCACHED 0x0010 /* page is mapped uncached */ 150#endif 151 152#ifdef VM_PAGE_MD_UNCACHED 153#define VM_PAGE_MD_CACHED_P(pg) (((pg)->mdpage.mdpg_attrs & VM_PAGE_MD_UNCACHED) == 0) 154#define VM_PAGE_MD_UNCACHED_P(pg) (((pg)->mdpage.mdpg_attrs & VM_PAGE_MD_UNCACHED) != 0) 155#endif 156#define VM_PAGE_MD_MODIFIED_P(pg) (((pg)->mdpage.mdpg_attrs & VM_PAGE_MD_MODIFIED) != 0) 157#define VM_PAGE_MD_REFERENCED_P(pg) (((pg)->mdpage.mdpg_attrs & VM_PAGE_MD_REFERENCED) != 0) 158#define VM_PAGE_MD_POOLPAGE_P(pg) (((pg)->mdpage.mdpg_attrs & VM_PAGE_MD_POOLPAGE) != 0) 159#define VM_PAGE_MD_EXECPAGE_P(pg) (((pg)->mdpage.mdpg_attrs & VM_PAGE_MD_EXECPAGE) != 0) 160 161struct vm_page_md { 162 struct pv_entry mdpg_first; /* pv_entry first */ 163#ifdef MULTIPROCESSOR 164 volatile u_int mdpg_attrs; /* page attributes */ 165 kmutex_t *mdpg_lock; /* pv list lock */ 166#define VM_PAGE_PVLIST_LOCK_INIT(pg) \ 167 (pg)->mdpage.mdpg_lock = NULL 168#define VM_PAGE_PVLIST_LOCKED_P(pg) \ 169 (mutex_owner((pg)->mdpage.mdpg_lock) != 0) 170#define VM_PAGE_PVLIST_LOCK(pg, list_change) \ 171 pmap_pvlist_lock(pg, list_change) 172#define VM_PAGE_PVLIST_UNLOCK(pg) \ 173 mutex_spin_exit((pg)->mdpage.mdpg_lock); 174#define VM_PAGE_PVLIST_GEN(pg) ((uint16_t)(pg->mdpage.mdpg_attrs >> 16)) 175#else 176 u_int mdpg_attrs; /* page attributes */ 177#define VM_PAGE_PVLIST_LOCK_INIT(pg) do { } while (/*CONSTCOND*/ 0) 178#define VM_PAGE_PVLIST_LOCKED_P(pg) true 179#define VM_PAGE_PVLIST_LOCK(pg, lc) (mutex_spin_enter(&pmap_pvlist_mutex), 0) 180#define VM_PAGE_PVLIST_UNLOCK(pg) mutex_spin_exit(&pmap_pvlist_mutex) 181#define VM_PAGE_PVLIST_GEN(pg) (0) 182#endif 183}; 184 185#define VM_MDPAGE_INIT(pg) \ 186do { \ 187 (pg)->mdpage.mdpg_first.pv_next = NULL; \ 188 (pg)->mdpage.mdpg_first.pv_pmap = NULL; \ 189 (pg)->mdpage.mdpg_first.pv_va = (pg)->phys_addr; \ 190 VM_PAGE_PVLIST_LOCK_INIT(pg); \ 191 (pg)->mdpage.mdpg_attrs = 0; \ 192} while (/* CONSTCOND */ 0) 193 194#endif /* _LOCORE */ 195 196#endif /* _POWERPC_BOOKE_VMPARAM_H_ */ 197