1/* $NetBSD: vmparam.h,v 1.48 2020/02/01 19:41:48 tsutsui Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 37 * 38 * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 39 */ 40 41#ifndef _MACHINE_VMPARAM_H_ 42#define _MACHINE_VMPARAM_H_ 43 44/* 45 * Machine dependent constants for amiga 46 */ 47 48/* 49 * Use common m68k definitions to define PAGE_SIZE and related constants. 50 */ 51#include <m68k/vmparam.h> 52 53/* 54 * USRSTACK is the top (end) of the user stack. 55 */ 56 57#ifndef USRSTACK 58#define USRSTACK 0x1E000000 59#endif 60 61/* 62 * Virtual memory related constants, all in bytes 63 */ 64 65#ifndef MAXTSIZ 66#define MAXTSIZ (32*1024*1024) /* max text size */ 67#endif 68#ifndef DFLDSIZ 69#define DFLDSIZ (64*1024*1024) /* initial data size limit */ 70#endif 71#ifndef MAXDSIZ 72#define MAXDSIZ (224*1024*1024) /* max data size */ 73#endif 74#ifndef DFLSSIZ 75#define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 76#endif 77#ifndef MAXSSIZ 78#define MAXSSIZ (32*1024*1024) /* max stack size */ 79#endif 80 81/* 82 * PTEs for mapping user space into the kernel for phyio operations. 83 * One page is enough to handle 16Mb of simultaneous raw IO operations. 84 */ 85#ifndef USRIOSIZE 86#define USRIOSIZE (1 * NPTEPG) /* 16mb */ 87#endif 88 89/* 90 * user/kernel map constants 91 */ 92#define VM_MIN_ADDRESS ((vaddr_t)0) /* user min */ 93#define VM_MAX_ADDRESS ((vaddr_t)(USRSTACK)) /* user max */ 94#define VM_MAXUSER_ADDRESS ((vaddr_t)(VM_MAX_ADDRESS)) /* same */ 95#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 96#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-(NPTEPG * PAGE_SIZE)) 97 98/* 99 * virtual sizes (bytes) for various kernel submaps 100 */ 101#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 102 103/* 104 * Our bootloader currently passes up to 16 segments (but this is variable) 105 * Normally, the biggest of them is used for the kernel, and the kernel 106 * segment is given to VM first. 107 */ 108#define VM_PHYSSEG_MAX (16) 109#define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM 110 111/* 112 * Allow supporting Zorro-II memory as lower priority: 113 * 114 * - DEFAULT for Zorro-III memory (presumably 32 bit) 115 * - ZORROII for Zorro-II memory (16 bit, Zorro-II DMA) 116 */ 117 118#define VM_NFREELIST 2 119#define VM_FREELIST_DEFAULT 0 120#define VM_FREELIST_ZORROII 1 121 122#define __HAVE_PMAP_PHYSSEG 123 124/* 125 * pmap-specific data stored in the vm_physmem[] array. 126 */ 127struct pmap_physseg { 128 struct pv_header *pvheader; /* pv table for this seg */ 129}; 130 131/* 132 * number of kernel PT pages (initial only, can grow dynamically) 133 */ 134#define VM_KERNEL_PT_PAGES ((vm_size_t)10) 135#endif /* !_MACHINE_VMPARAM_H_ */ 136