vmparam.h revision 1.7
1/* $NetBSD: vmparam.h,v 1.7 2010/11/06 15:42:48 uebayasi Exp $ */ 2 3/*- 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#ifndef _MACHINE_VMPARAM_H_ 35#define _MACHINE_VMPARAM_H_ 36 37/* 38 * We use 16K pages on IBM4xx CPUs. Override the PAGE_* definitions 39 * to be compile-time constants. 40 */ 41#define PAGE_SHIFT 14 42#define PAGE_SIZE (1 << PAGE_SHIFT) 43#define PAGE_MASK (PAGE_SIZE - 1) 44 45#define USRSTACK VM_MAXUSER_ADDRESS 46 47#ifndef MAXTSIZ 48#define MAXTSIZ (64*1024*1024) /* max text size */ 49#endif 50 51#ifndef DFLDSIZ 52#define DFLDSIZ (128*1024*1024) /* default data size */ 53#endif 54 55#ifndef MAXDSIZ 56#define MAXDSIZ (1*1024*1024*1024) /* max data size */ 57#endif 58 59#ifndef DFLSSIZ 60#define DFLSSIZ (2*1024*1024) /* default stack size */ 61#endif 62 63#ifndef MAXSSIZ 64#define MAXSSIZ (32*1024*1024) /* max stack size */ 65#endif 66 67/* 68 * Size of User Raw I/O map 69 */ 70#define USRIOSIZE 1024 71 72#if 1 73/* 74 * These definitions give you a 2GB kernel VA space. The other set matches 75 * the way other PPC ports lay out their 256MB kernel address space. 76 */ 77#define VM_MIN_ADDRESS ((vaddr_t)0) 78#define VM_MAXUSER_ADDRESS ((vaddr_t)0xffff0000-PAGE_SIZE) 79#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 80#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0x80000000) 81#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xff000000) 82#else 83/* 84 * Would like to have MAX addresses = 0, but this doesn't (currently) work 85 */ 86#define VM_MIN_ADDRESS ((vaddr_t)0) 87#define VM_MAXUSER_ADDRESS ((vaddr_t)0x80000000-PAGE_SIZE) 88#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 89#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)(KERNEL_SR << ADDR_SR_SHFT)) 90#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH - 1) 91#endif 92 93/* XXX max. amount of KVM to be used by buffers. */ 94#ifndef VM_MAX_KERNEL_BUF 95#define VM_MAX_KERNEL_BUF (0x10000000 * 7 / 10) 96 97/* 98 * Override the default pager_map size, there's not enough KVA. 99 */ 100#define PAGER_MAP_DEFAULT_SIZE (4 * 1024 * 1024) 101#endif 102 103#define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 104 105#define __HAVE_PMAP_PHYSSEG 106 107struct pmap_physseg { 108 struct pv_entry *pvent; 109 char *attrs; 110}; 111 112#define VM_PHYSSEG_MAX 16 /* 1? */ 113#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 114 115#define VM_NFREELIST 1 116#define VM_FREELIST_DEFAULT 0 117 118#endif /* _MACHINE_VMPARAM_H_ */ 119