/* $NetBSD: vmparam.h,v 1.43 2023/02/07 14:11:16 hgutch Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)vmparam.h 8.1 (Berkeley) 6/11/93 */ /* * Machine dependent constants for Sun 4U and 4V UltraSPARC */ #ifndef VMPARAM_H #define VMPARAM_H #define __USE_TOPDOWN_VM /* * We use 8K VM pages on the Sun4U. Override the PAGE_* definitions * to be compile-time constants. */ #define PAGE_SHIFT 13 #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (PAGE_SIZE - 1) /* * Default pager_map of 16MB is awfully small. There is plenty * of VA so use it. */ #define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024) /* * Defaults for Unified Buffer Cache parameters. */ #ifndef UBC_WINSHIFT #define UBC_WINSHIFT 16 /* 64kB */ #endif #ifndef UBC_NWINS #define UBC_NWINS 4096 /* 256MB */ #endif /* * The kernel itself is mapped by the boot loader with 4Mb locked VM pages, * so let's keep 4Mb definitions here as well. */ #define PAGE_SHIFT_4M 22 #define PAGE_SIZE_4M (1UL<<PAGE_SHIFT_4M) #define PAGE_MASK_4M (PAGE_SIZE_4M-1) /* * USRSTACK is the top (end) of the user stack. */ #define USRSTACK32 0xffffe000L #ifdef __arch64__ #define USRSTACK 0xffffffffffffe000L #else #define USRSTACK USRSTACK32 #endif /* * Virtual memory related constants, all in bytes */ #if __arch64__ /* * 64-bit limits: * * Since the compiler generates `call' instructions we can't * have more than 4GB in a single text segment. * * And since we only have a 40-bit adderss space, allow half * of that for data and the other half for stack. */ #ifndef MAXTSIZ #define MAXTSIZ (4UL*1024*1024*1024) /* max text size */ #endif #ifndef DFLDSIZ #define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1UL<<39) /* 512GB max data size */ /* * For processes not using topdown VA, we need to limit the data size - * they probably have not been compiled with the proper compiler memory * model. */ #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ round_page((vaddr_t)(da) + (vsize_t)uimax(maxdmap,1UL*1024*1024*1024)) #endif #ifndef DFLSSIZ #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ #define MAXSSIZ (128*1024*1024) /* max stack size */ #endif #else /* * 32-bit limits: * * We only have 4GB to play with. Limit data, and text * each to half of that and set a reasonable stack limit. * */ #ifndef MAXTSIZ #define MAXTSIZ (2UL*1024*1024*1024) /* max text size */ #endif #ifndef DFLDSIZ #define DFLDSIZ (128*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ #define MAXDSIZ (2UL*1024*1024*1024) /* max data size */ #endif #ifndef DFLSSIZ #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ #define MAXSSIZ (64*1024*1024) /* max stack size */ #endif #endif /* * 32-bit emulation limits (same as sparc - we could go bigger) */ #ifndef DFLDSIZ32 #define DFLDSIZ32 (64*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ32 #define MAXDSIZ32 (512*1024*1024) /* max data size */ #endif #ifndef DFLSSIZ32 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ32 #define MAXSSIZ32 (32*1024*1024) /* max stack size */ #endif /* * Mach derived constants */ /* * User/kernel map constants. */ #define VM_MIN_ADDRESS ((vaddr_t)0) #define VM_MAX_ADDRESS (((vaddr_t)(-1))&~PGOFSET) #define VM_MAXUSER_ADDRESS VM_MAX_ADDRESS #define VM_MAXUSER_ADDRESS32 ((vaddr_t)(0x00000000ffffffffL&~PGOFSET)) #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) #ifdef __arch64__ #define VM_KERNEL_MEM_VA_START ((vaddr_t)0x100000000UL) #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0x000007ffffffffffUL) #else #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND) #endif #define VM_PHYSSEG_MAX 32 /* up to 32 segments */ #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH #define VM_NFREELIST 1 #define VM_FREELIST_DEFAULT 0 #endif
