vmparam.h revision 1.46.18.2
1 1.46.18.2 martin /* $NetBSD: vmparam.h,v 1.46.18.2 2020/04/08 14:07:26 martin Exp $ */ 2 1.13 cgd 3 1.1 mw /* 4 1.42 rmind * Copyright (c) 1988 University of Utah. 5 1.1 mw * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 6 1.1 mw * All rights reserved. 7 1.33 agc * 8 1.33 agc * This code is derived from software contributed to Berkeley by 9 1.33 agc * the Systems Programming Group of the University of Utah Computer 10 1.33 agc * Science Department. 11 1.33 agc * 12 1.33 agc * Redistribution and use in source and binary forms, with or without 13 1.33 agc * modification, are permitted provided that the following conditions 14 1.33 agc * are met: 15 1.33 agc * 1. Redistributions of source code must retain the above copyright 16 1.33 agc * notice, this list of conditions and the following disclaimer. 17 1.33 agc * 2. Redistributions in binary form must reproduce the above copyright 18 1.33 agc * notice, this list of conditions and the following disclaimer in the 19 1.33 agc * documentation and/or other materials provided with the distribution. 20 1.33 agc * 3. Neither the name of the University nor the names of its contributors 21 1.33 agc * may be used to endorse or promote products derived from this software 22 1.33 agc * without specific prior written permission. 23 1.33 agc * 24 1.33 agc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 1.33 agc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 1.33 agc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 1.33 agc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 1.33 agc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 1.33 agc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 1.33 agc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.33 agc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.33 agc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.33 agc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.33 agc * SUCH DAMAGE. 35 1.33 agc * 36 1.33 agc * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 37 1.33 agc * 38 1.33 agc * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 39 1.33 agc */ 40 1.42 rmind 41 1.9 chopps #ifndef _MACHINE_VMPARAM_H_ 42 1.9 chopps #define _MACHINE_VMPARAM_H_ 43 1.4 mw 44 1.1 mw /* 45 1.39 tsutsui * Machine dependent constants for amiga 46 1.1 mw */ 47 1.27 thorpej 48 1.27 thorpej /* 49 1.46.18.2 martin * Use common m68k definitions to define PAGE_SIZE and related constants. 50 1.27 thorpej */ 51 1.46.18.2 martin #include <m68k/vmparam.h> 52 1.27 thorpej 53 1.1 mw /* 54 1.31 thorpej * USRSTACK is the top (end) of the user stack. 55 1.1 mw */ 56 1.1 mw 57 1.18 is #ifndef USRSTACK 58 1.41 mhitch #define USRSTACK 0x1E000000 59 1.18 is #endif 60 1.43 phx 61 1.1 mw /* 62 1.1 mw * Virtual memory related constants, all in bytes 63 1.1 mw */ 64 1.1 mw 65 1.1 mw #ifndef MAXTSIZ 66 1.44 phx #define MAXTSIZ (32*1024*1024) /* max text size */ 67 1.1 mw #endif 68 1.1 mw #ifndef DFLDSIZ 69 1.44 phx #define DFLDSIZ (64*1024*1024) /* initial data size limit */ 70 1.1 mw #endif 71 1.1 mw #ifndef MAXDSIZ 72 1.46 phx #define MAXDSIZ (224*1024*1024) /* max data size */ 73 1.1 mw #endif 74 1.1 mw #ifndef DFLSSIZ 75 1.1 mw #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 76 1.1 mw #endif 77 1.1 mw #ifndef MAXSSIZ 78 1.14 veego #define MAXSSIZ (32*1024*1024) /* max stack size */ 79 1.1 mw #endif 80 1.1 mw 81 1.1 mw /* 82 1.1 mw * PTEs for mapping user space into the kernel for phyio operations. 83 1.1 mw * One page is enough to handle 16Mb of simultaneous raw IO operations. 84 1.1 mw */ 85 1.1 mw #ifndef USRIOSIZE 86 1.1 mw #define USRIOSIZE (1 * NPTEPG) /* 16mb */ 87 1.1 mw #endif 88 1.1 mw 89 1.1 mw /* 90 1.11 chopps * user/kernel map constants 91 1.1 mw */ 92 1.22 is #define VM_MIN_ADDRESS ((vaddr_t)0) /* user min */ 93 1.22 is #define VM_MAX_ADDRESS ((vaddr_t)(USRSTACK)) /* user max */ 94 1.22 is #define VM_MAXUSER_ADDRESS ((vaddr_t)(VM_MAX_ADDRESS)) /* same */ 95 1.22 is #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 96 1.35 mhitch #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-(NPTEPG * PAGE_SIZE)) 97 1.1 mw 98 1.11 chopps /* 99 1.11 chopps * virtual sizes (bytes) for various kernel submaps 100 1.11 chopps */ 101 1.32 thorpej #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 102 1.18 is 103 1.18 is /* 104 1.18 is * Our bootloader currently passes up to 16 segments (but this is variable) 105 1.18 is * Normally, the biggest of them is used for the kernel, and the kernel 106 1.18 is * segment is given to VM first. 107 1.18 is */ 108 1.18 is #define VM_PHYSSEG_MAX (16) 109 1.18 is #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM 110 1.19 mhitch 111 1.19 mhitch /* 112 1.19 mhitch * Allow supporting Zorro-II memory as lower priority: 113 1.19 mhitch * 114 1.19 mhitch * - DEFAULT for Zorro-III memory (presumably 32 bit) 115 1.19 mhitch * - ZORROII for Zorro-II memory (16 bit, Zorro-II DMA) 116 1.19 mhitch */ 117 1.19 mhitch 118 1.19 mhitch #define VM_NFREELIST 2 119 1.19 mhitch #define VM_FREELIST_DEFAULT 0 120 1.19 mhitch #define VM_FREELIST_ZORROII 1 121 1.28 thorpej 122 1.29 thorpej #define __HAVE_PMAP_PHYSSEG 123 1.18 is 124 1.18 is /* 125 1.18 is * pmap-specific data stored in the vm_physmem[] array. 126 1.18 is */ 127 1.18 is struct pmap_physseg { 128 1.38 thorpej struct pv_header *pvheader; /* pv table for this seg */ 129 1.18 is }; 130 1.1 mw 131 1.11 chopps /* 132 1.11 chopps * number of kernel PT pages (initial only, can grow dynamically) 133 1.11 chopps */ 134 1.45 mlelstv #define VM_KERNEL_PT_PAGES ((vm_size_t)10) 135 1.9 chopps #endif /* !_MACHINE_VMPARAM_H_ */ 136
Indexes created Tue Oct 07 11:09:55 GMT 2025