1 /* $NetBSD: vmparam.h,v 1.9 2003/08/07 16:28:07 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 36 * 37 * @(#)vmparam.h 8.2 (Berkeley) 4/19/94 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 75 * 76 * @(#)vmparam.h 8.2 (Berkeley) 4/19/94 77 */ 78 79 #ifndef _MACHINE_VMPARAM_H_ 80 #define _MACHINE_VMPARAM_H_ 81 82 /* 83 * We use 4K pages on the hp300. Override the PAGE_* definitions 84 * to be compile-time constants. 85 */ 86 #define PAGE_SHIFT 12 87 #define PAGE_SIZE (1 << PAGE_SHIFT) 88 #define PAGE_MASK (PAGE_SIZE - 1) 89 90 /* 91 * USRSTACK is the top (end) of the user stack. 92 */ 93 #define USRSTACK VM_MAXUSER_ADDRESS 94 95 /* 96 * Virtual memory related constants, all in bytes 97 */ 98 #ifndef MAXTSIZ 99 #define MAXTSIZ (8*1024*1024) /* max text size */ 100 #endif 101 #ifndef DFLDSIZ 102 #define DFLDSIZ (16*1024*1024) /* initial data size limit */ 103 #endif 104 #ifndef MAXDSIZ 105 #define MAXDSIZ (64*1024*1024) /* max data size */ 106 #endif 107 #ifndef DFLSSIZ 108 #define DFLSSIZ (512*1024) /* initial stack size limit */ 109 #endif 110 #ifndef MAXSSIZ 111 #define MAXSSIZ MAXDSIZ /* max stack size */ 112 #endif 113 114 /* 115 * Sizes of the system and user portions of the system page table. 116 */ 117 /* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */ 118 #define SYSPTSIZE (2 * NPTEPG) /* 8mb */ 119 #define USRPTSIZE (1 * NPTEPG) /* 4mb */ 120 121 /* 122 * PTEs for mapping user space into the kernel for phyio operations. 123 * One page is enough to handle 4Mb of simultaneous raw IO operations. 124 */ 125 #ifndef USRIOSIZE 126 #define USRIOSIZE (1 * NPTEPG) /* 4mb */ 127 #endif 128 129 /* 130 * PTEs for system V style shared memory. 131 * This is basically slop for kmempt which we actually allocate (malloc) from. 132 */ 133 #ifndef SHMMAXPGS 134 #define SHMMAXPGS 1024 /* 8mb */ 135 #endif 136 137 /* 138 * Mach derived constants 139 */ 140 141 /* user/kernel map constants */ 142 #define VM_MIN_ADDRESS ((vaddr_t)0) 143 #define VM_MAXUSER_ADDRESS ((vaddr_t)0xFFFC0000) 144 #define VM_MAX_ADDRESS ((vaddr_t)0xFFFC0000) 145 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 146 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0-PAGE_SIZE)) 147 148 /* virtual sizes (bytes) for various kernel submaps */ 149 #define VM_MBUF_SIZE (NMBCLUSTERS*MCLBYTES) 150 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 151 152 /* # of kernel PT pages (initial only, can grow dynamically) */ 153 #define VM_KERNEL_PT_PAGES ((vsize_t)2) /* XXX: SYSPTSIZE */ 154 155 /* 156 * Constants which control the way the VM system deals with memory segments. 157 * Only one physical contigous memory segment. 158 */ 159 #define VM_PHYSSEG_MAX 1 160 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 161 #define VM_PHYSSEG_NOADD 162 163 #define VM_NFREELIST 1 164 #define VM_FREELIST_DEFAULT 0 165 166 #define __HAVE_PMAP_PHYSSEG 167 168 /* 169 * pmap-specific data stored in the vm_physmem[] array. 170 */ 171 struct pmap_physseg { 172 struct pv_entry *pvent; /* pv table for this seg */ 173 char *attrs; /* page attributes for this seg */ 174 }; 175 176 #endif /* _MACHINE_VMPARAM_H_ */ 177