vmparam.h revision 1.37.2.1
1 1.37.2.1 tls /* $NetBSD: vmparam.h,v 1.37.2.1 2013/02/25 00:28:19 tls Exp $ */ 2 1.10 thorpej 3 1.1 cgd /* 4 1.36 rmind * Copyright (c) 1988 University of Utah. 5 1.1 cgd * Copyright (c) 1992, 1993 6 1.1 cgd * The Regents of the University of California. All rights reserved. 7 1.27 agc * 8 1.27 agc * This code is derived from software contributed to Berkeley by 9 1.27 agc * the Systems Programming Group of the University of Utah Computer 10 1.27 agc * Science Department and Ralph Campbell. 11 1.27 agc * 12 1.27 agc * Redistribution and use in source and binary forms, with or without 13 1.27 agc * modification, are permitted provided that the following conditions 14 1.27 agc * are met: 15 1.27 agc * 1. Redistributions of source code must retain the above copyright 16 1.27 agc * notice, this list of conditions and the following disclaimer. 17 1.27 agc * 2. Redistributions in binary form must reproduce the above copyright 18 1.27 agc * notice, this list of conditions and the following disclaimer in the 19 1.27 agc * documentation and/or other materials provided with the distribution. 20 1.27 agc * 3. Neither the name of the University nor the names of its contributors 21 1.27 agc * may be used to endorse or promote products derived from this software 22 1.27 agc * without specific prior written permission. 23 1.27 agc * 24 1.27 agc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 1.27 agc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 1.27 agc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 1.27 agc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 1.27 agc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 1.27 agc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 1.27 agc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.27 agc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.27 agc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.27 agc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.27 agc * SUCH DAMAGE. 35 1.27 agc * 36 1.27 agc * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 37 1.27 agc * 38 1.27 agc * @(#)vmparam.h 8.2 (Berkeley) 4/22/94 39 1.27 agc */ 40 1.1 cgd 41 1.10 thorpej #ifndef _ALPHA_VMPARAM_H_ 42 1.10 thorpej #define _ALPHA_VMPARAM_H_ 43 1.10 thorpej 44 1.37 martin #include <machine/alpha_cpu.h> 45 1.37 martin 46 1.37.2.1 tls #define __USE_TOPDOWN_VM 47 1.37.2.1 tls 48 1.1 cgd /* 49 1.1 cgd * Machine dependent constants for Alpha. 50 1.1 cgd */ 51 1.8 thorpej 52 1.1 cgd /* 53 1.26 thorpej * All systypes currently supported by NetBSD/alpha have an 8K pages. 54 1.26 thorpej * Override the PAGE_* definitions to be compile-time constants. 55 1.26 thorpej */ 56 1.26 thorpej #define PAGE_SHIFT 13 57 1.26 thorpej #define PAGE_SIZE (1 << PAGE_SHIFT) 58 1.26 thorpej #define PAGE_MASK (PAGE_SIZE - 1) 59 1.26 thorpej 60 1.26 thorpej /* 61 1.25 thorpej * USRSTACK is the top (end) of the user stack. 62 1.10 thorpej * 63 1.10 thorpej * Digital UNIX (formerly DEC OSF/1) places the stack below the 64 1.10 thorpej * text segment (i.e. growing downward from 4G). We may want to 65 1.10 thorpej * consider doing that at some point, but it might require changes 66 1.10 thorpej * to the exec code. 67 1.1 cgd */ 68 1.12 thorpej #define USRSTACK ((vaddr_t)0x0000000200000000) /* 8G */ 69 1.1 cgd 70 1.1 cgd /* 71 1.1 cgd * Virtual memory related constants, all in bytes 72 1.1 cgd */ 73 1.1 cgd #ifndef MAXTSIZ 74 1.1 cgd #define MAXTSIZ (1<<30) /* max text size (1G) */ 75 1.1 cgd #endif 76 1.1 cgd #ifndef DFLDSIZ 77 1.28 matt #define DFLDSIZ (1<<28) /* initial data size (256M) */ 78 1.1 cgd #endif 79 1.1 cgd #ifndef MAXDSIZ 80 1.1 cgd #define MAXDSIZ (1<<30) /* max data size (1G) */ 81 1.1 cgd #endif 82 1.1 cgd #ifndef DFLSSIZ 83 1.1 cgd #define DFLSSIZ (1<<21) /* initial stack size (2M) */ 84 1.1 cgd #endif 85 1.1 cgd #ifndef MAXSSIZ 86 1.1 cgd #define MAXSSIZ (1<<25) /* max stack size (32M) */ 87 1.1 cgd #endif 88 1.1 cgd 89 1.1 cgd /* 90 1.1 cgd * PTEs for mapping user space into the kernel for phyio operations. 91 1.1 cgd * 64 pte's are enough to cover 8 disks * MAXBSIZE. 92 1.1 cgd */ 93 1.1 cgd #ifndef USRIOSIZE 94 1.1 cgd #define USRIOSIZE 64 95 1.1 cgd #endif 96 1.1 cgd 97 1.1 cgd /* 98 1.1 cgd * Mach derived constants 99 1.1 cgd */ 100 1.1 cgd 101 1.1 cgd /* user/kernel map constants */ 102 1.12 thorpej #define VM_MIN_ADDRESS ((vaddr_t)ALPHA_USEG_BASE) /* 0 */ 103 1.12 thorpej #define VM_MAXUSER_ADDRESS ((vaddr_t)(ALPHA_USEG_END + 1L)) /* 4T */ 104 1.1 cgd #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 105 1.12 thorpej #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)ALPHA_K1SEG_BASE) 106 1.19 thorpej #define VM_MAX_KERNEL_ADDRESS trunc_page((vaddr_t)ALPHA_K1SEG_END) 107 1.1 cgd 108 1.1 cgd /* virtual sizes (bytes) for various kernel submaps */ 109 1.26 thorpej #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 110 1.1 cgd 111 1.1 cgd /* some Alpha-specific constants */ 112 1.12 thorpej #define VPTBASE ((vaddr_t)0xfffffffc00000000) /* Virt. pg table */ 113 1.8 thorpej 114 1.8 thorpej #define VM_PHYSSEG_MAX 16 /* XXX */ 115 1.8 thorpej #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 116 1.11 thorpej 117 1.11 thorpej #define VM_NFREELIST 1 118 1.11 thorpej #define VM_FREELIST_DEFAULT 0 119 1.8 thorpej 120 1.10 thorpej #endif /* ! _ALPHA_VMPARAM_H_ */ 121
Indexes created Sat Oct 25 16:10:12 GMT 2025