/* $OpenBSD: vmparam.h,v 1.30 2023/04/13 19:39:50 miod Exp $ */ /* $NetBSD: vmparam.h,v 1.18 2000/05/22 17:13:54 thorpej Exp $ */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department and Ralph Campbell. * * 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. * * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ * * @(#)vmparam.h 8.2 (Berkeley) 4/22/94 */ #ifndef _MACHINE_VMPARAM_H_ #define _MACHINE_VMPARAM_H_ /* * Machine dependent constants for Alpha. */ #define USRSTACK ((vaddr_t)0x0000040000000000ULL) /* 4T */ /* * Virtual memory related constants, all in bytes */ #ifndef MAXTSIZ #define MAXTSIZ (1*1024*1024*1024) /* max text size */ #endif #ifndef DFLDSIZ #define DFLDSIZ (128*1024*1024) /* initial data size */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1*1024*1024*1024) /* max data size */ #endif #ifndef BRKSIZ #define BRKSIZ MAXDSIZ /* heap gap size */ #endif #ifndef DFLSSIZ #define DFLSSIZ (2*1024*1024) /* initial stack size */ #endif #ifndef MAXSSIZ #define MAXSSIZ (32*1024*1024) /* max stack size */ #endif #define STACKGAP_RANDOM 256*1024 /* * PTEs for mapping user space into the kernel for physio operations. * 64 pte's are enough to cover 8 disks * MAXBSIZE. */ #ifndef USRIOSIZE #define USRIOSIZE 64 #endif /* * PTEs for system V style shared memory. * This is basically slop for kmempt which we actually allocate (malloc) from. */ #ifndef SHMMAXPGS #define SHMMAXPGS 4096 /* 32mb */ #endif /* * Mach derived constants */ /* user/kernel map constants */ #define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE) #define VM_MAXUSER_ADDRESS ((vaddr_t)(ALPHA_USEG_END + 1L)) /* 4T */ #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)ALPHA_K1SEG_BASE) #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)ALPHA_K1SEG_END) /* map PIE into the first quarter of the address space before stack */ #define VM_PIE_MIN_ADDR PAGE_SIZE #define VM_PIE_MAX_ADDR 0x80000000 /* virtual sizes (bytes) for various kernel submaps */ #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) /* some Alpha-specific constants */ #define VPTBASE ((vaddr_t)0xfffffffc00000000UL) /* Virt. pg table */ #define VM_PHYSSEG_MAX 16 /* XXX */ #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH #define VM_PHYSSEG_NOADD /* no more after vm_mem_init */ #endif /* ! _MACHINE_VMPARAM_H_ */
