| 1 | /* $NetBSD: vmparam.h,v 1.48 2019/03/29 20:18:09 christos Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1992, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This software was developed by the Computer Systems Engineering group |
| 8 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
| 9 | * contributed to Berkeley. |
| 10 | * |
| 11 | * All advertising materials mentioning features or use of this software |
| 12 | * must display the following acknowledgement: |
| 13 | * This product includes software developed by the University of |
| 14 | * California, Lawrence Berkeley Laboratory. |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or without |
| 17 | * modification, are permitted provided that the following conditions |
| 18 | * are met: |
| 19 | * 1. Redistributions of source code must retain the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer. |
| 21 | * 2. Redistributions in binary form must reproduce the above copyright |
| 22 | * notice, this list of conditions and the following disclaimer in the |
| 23 | * documentation and/or other materials provided with the distribution. |
| 24 | * 3. Neither the name of the University nor the names of its contributors |
| 25 | * may be used to endorse or promote products derived from this software |
| 26 | * without specific prior written permission. |
| 27 | * |
| 28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 38 | * SUCH DAMAGE. |
| 39 | * |
| 40 | * @(#)vmparam.h 8.1 (Berkeley) 6/11/93 |
| 41 | */ |
| 42 | |
| 43 | #ifndef _SPARC_VMPARAM_H_ |
| 44 | #define _SPARC_VMPARAM_H_ |
| 45 | |
| 46 | #define __USE_TOPDOWN_VM |
| 47 | |
| 48 | /* |
| 49 | * Machine dependent constants for SPARC |
| 50 | */ |
| 51 | |
| 52 | #include <machine/cpuconf.h> |
| 53 | |
| 54 | /* |
| 55 | * Sun4 systems have a 8K page size. All other platforms have a |
| 56 | * 4K page size. We need to define these upper and lower limits |
| 57 | * for machine-independent code. We also try to make PAGE_SIZE, |
| 58 | * PAGE_SHIFT, and PAGE_MASK into compile-time constants, if we can. |
| 59 | * |
| 60 | * XXX Should garbage-collect the version of this from <machine/param.h>. |
| 61 | */ |
| 62 | #define PAGE_SHIFT_SUN4 13 |
| 63 | #define PAGE_SHIFT_SUN4CM 12 |
| 64 | |
| 65 | #define MAX_PAGE_SHIFT PAGE_SHIFT_SUN4 |
| 66 | #define MIN_PAGE_SHIFT PAGE_SHIFT_SUN4CM |
| 67 | |
| 68 | #define MIN_PAGE_SIZE (1 << MIN_PAGE_SHIFT) |
| 69 | #define MAX_PAGE_SIZE (1 << MAX_PAGE_SHIFT) |
| 70 | |
| 71 | #if CPU_NTYPES != 0 && !defined(SUN4) |
| 72 | #define PAGE_SHIFT PAGE_SHIFT_SUN4CM |
| 73 | #elif CPU_NTYPES == 1 && defined(SUN4) |
| 74 | #define PAGE_SHIFT PAGE_SHIFT_SUN4 |
| 75 | #endif |
| 76 | |
| 77 | #ifdef PAGE_SHIFT |
| 78 | #define PAGE_SIZE (1 << PAGE_SHIFT) |
| 79 | #define PAGE_MASK (PAGE_SIZE - 1) |
| 80 | #endif |
| 81 | |
| 82 | /* |
| 83 | * USRSTACK is the top (end) of the user stack. |
| 84 | */ |
| 85 | #define USRSTACK KERNBASE /* Start of user stack */ |
| 86 | |
| 87 | /* |
| 88 | * Virtual memory related constants, all in bytes |
| 89 | */ |
| 90 | #ifndef MAXTSIZ |
| 91 | #define MAXTSIZ (64*1024*1024) /* max text size */ |
| 92 | #endif |
| 93 | #ifndef DFLDSIZ |
| 94 | #define DFLDSIZ (64*1024*1024) /* initial data size limit */ |
| 95 | #endif |
| 96 | #ifndef MAXDSIZ |
| 97 | #define MAXDSIZ (512*1024*1024) /* max data size */ |
| 98 | #endif |
| 99 | #ifndef DFLSSIZ |
| 100 | #define DFLSSIZ (8*1024*1024) /* initial stack size limit */ |
| 101 | #endif |
| 102 | #ifndef MAXSSIZ |
| 103 | #define MAXSSIZ (32*1024*1024) /* max stack size */ |
| 104 | #endif |
| 105 | |
| 106 | /* |
| 107 | * Mach derived constants |
| 108 | */ |
| 109 | |
| 110 | /* |
| 111 | * User/kernel map constants. Note that sparc/vaddrs.h defines the |
| 112 | * IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS: |
| 113 | * tread with care. |
| 114 | */ |
| 115 | #define VM_MIN_ADDRESS ((vaddr_t)0) |
| 116 | #define VM_MAX_ADDRESS ((vaddr_t)KERNBASE) |
| 117 | #define VM_MAXUSER_ADDRESS ((vaddr_t)KERNBASE) |
| 118 | #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) |
| 119 | #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND) |
| 120 | |
| 121 | #define VM_PHYSSEG_MAX 32 /* up to 32 segments */ |
| 122 | #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH |
| 123 | |
| 124 | #define VM_NFREELIST 1 |
| 125 | #define VM_FREELIST_DEFAULT 0 |
| 126 | |
| 127 | #endif /* _SPARC_VMPARAM_H_ */ |