vmparam.h revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-4-Clause 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 * $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $ 34 * $FreeBSD: stable/11/sys/powerpc/include/vmparam.h 330897 2018-03-14 03:19:51Z eadler $ 35 */ 36 37#ifndef _MACHINE_VMPARAM_H_ 38#define _MACHINE_VMPARAM_H_ 39 40#define USRSTACK SHAREDPAGE 41 42#ifndef MAXTSIZ 43#define MAXTSIZ (1*1024*1024*1024) /* max text size */ 44#endif 45 46#ifndef DFLDSIZ 47#define DFLDSIZ (128*1024*1024) /* default data size */ 48#endif 49 50#ifndef MAXDSIZ 51#define MAXDSIZ (1*1024*1024*1024) /* max data size */ 52#endif 53 54#ifndef DFLSSIZ 55#define DFLSSIZ (8*1024*1024) /* default stack size */ 56#endif 57 58#ifndef MAXSSIZ 59#define MAXSSIZ (64*1024*1024) /* max stack size */ 60#endif 61 62#ifdef AIM 63#define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0xfffff000) 64#else 65#define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0x7ffff000) 66#endif 67 68/* 69 * Would like to have MAX addresses = 0, but this doesn't (currently) work 70 */ 71#if !defined(LOCORE) 72#ifdef __powerpc64__ 73#define VM_MIN_ADDRESS (0x0000000000000000UL) 74#define VM_MAXUSER_ADDRESS (0xfffffffffffff000UL) 75#define VM_MAX_ADDRESS (0xffffffffffffffffUL) 76#else 77#define VM_MIN_ADDRESS ((vm_offset_t)0) 78#define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 79#define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff) 80#endif 81#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 82#else /* LOCORE */ 83#if !defined(__powerpc64__) && defined(BOOKE) 84#define VM_MIN_ADDRESS 0 85#define VM_MAXUSER_ADDRESS 0x7ffff000 86#endif 87#endif /* LOCORE */ 88 89#define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 90#define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 91 92#ifdef AIM 93#define KERNBASE 0x00100000UL /* start of kernel virtual */ 94 95#ifdef __powerpc64__ 96#define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL 97#define VM_MAX_KERNEL_ADDRESS 0xc0000001c7ffffffUL 98#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 99#else 100#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 101#define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 102#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 103#endif 104 105/* 106 * Use the direct-mapped BAT registers for UMA small allocs. This 107 * takes pressure off the small amount of available KVA. 108 */ 109#define UMA_MD_SMALL_ALLOC 110 111#else /* Book-E */ 112 113#define KERNBASE 0xc0000000 /* start of kernel virtual */ 114 115#define VM_MIN_KERNEL_ADDRESS KERNBASE 116#define VM_MAX_KERNEL_ADDRESS 0xffffffff 117#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 118 119#endif /* AIM/E500 */ 120 121#if !defined(LOCORE) 122struct pmap_physseg { 123 struct pv_entry *pvent; 124 char *attrs; 125}; 126#endif 127 128#define VM_PHYSSEG_MAX 16 /* 1? */ 129 130/* 131 * The physical address space is densely populated on 32-bit systems, 132 * but may not be on 64-bit ones. 133 */ 134#ifdef __powerpc64__ 135#define VM_PHYSSEG_SPARSE 136#else 137#define VM_PHYSSEG_DENSE 138#endif 139 140/* 141 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 142 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 143 * the pool from which physical pages for small UMA objects are 144 * allocated. 145 */ 146#define VM_NFREEPOOL 2 147#define VM_FREEPOOL_DEFAULT 0 148#define VM_FREEPOOL_DIRECT 1 149 150/* 151 * Create one free page list. 152 */ 153#define VM_NFREELIST 1 154#define VM_FREELIST_DEFAULT 0 155 156/* 157 * The largest allocation size is 4MB. 158 */ 159#define VM_NFREEORDER 11 160 161/* 162 * Disable superpage reservations. 163 */ 164#ifndef VM_NRESERVLEVEL 165#define VM_NRESERVLEVEL 0 166#endif 167 168#ifndef VM_INITIAL_PAGEIN 169#define VM_INITIAL_PAGEIN 16 170#endif 171 172#ifndef SGROWSIZ 173#define SGROWSIZ (128UL*1024) /* amount to grow stack */ 174#endif 175 176/* 177 * How many physical pages per kmem arena virtual page. 178 */ 179#ifndef VM_KMEM_SIZE_SCALE 180#define VM_KMEM_SIZE_SCALE (3) 181#endif 182 183/* 184 * Optional floor (in bytes) on the size of the kmem arena. 185 */ 186#ifndef VM_KMEM_SIZE_MIN 187#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 188#endif 189 190/* 191 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 192 * usable KVA space. 193 */ 194#ifndef VM_KMEM_SIZE_MAX 195#define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 196 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 197#endif 198 199#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 200 201/* 202 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 203 * an opaque pointer required by the machine-independent parts of the kernel. 204 * That pointer references the vm_page that is "mapped" by the sf_buf. The 205 * actual mapping is provided by the direct virtual-to-physical mapping. 206 * 207 * On OEA64 and Book-E, we need to do something a little more complicated. Use 208 * the runtime-detected hw_direct_map to pick between the two cases. Our 209 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 210 */ 211#define SFBUF 212#define SFBUF_NOMD 213#define SFBUF_OPTIONAL_DIRECT_MAP hw_direct_map 214#define SFBUF_PHYS_DMAP(x) (x) 215 216#endif /* _MACHINE_VMPARAM_H_ */ 217