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/* $NetBSD: vmparam.h,v 1.26 2003/08/07 16:27:47 agc Exp $ */ /*- * Copyright (c) 1988 The Regents of the University of California. * All rights reserved. * * 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. * * $FreeBSD: release/9.1.0/sys/arm/include/vmparam.h 221855 2011-05-13 19:35:01Z mdf $ */ #ifndef _MACHINE_VMPARAM_H_ #define _MACHINE_VMPARAM_H_ /*#include <arm/arm32/vmparam.h> */ /* * Address space constants */ /* * The line between user space and kernel space * Mappings >= KERNEL_BASE are constant across all processes */ #define KERNBASE 0xc0000000 /* * max number of non-contig chunks of physical RAM you can have */ #define VM_PHYSSEG_MAX 32 /* * The physical address space is densely populated. */ #define VM_PHYSSEG_DENSE /* * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool * from which physical pages are allocated and VM_FREEPOOL_DIRECT is * the pool from which physical pages for small UMA objects are * allocated. */ #define VM_NFREEPOOL 3 #define VM_FREEPOOL_CACHE 2 #define VM_FREEPOOL_DEFAULT 0 #define VM_FREEPOOL_DIRECT 1 /* * we support 2 free lists: * * - DEFAULT for all systems * - ISADMA for the ISA DMA range on Sharks only */ #define VM_NFREELIST 2 #define VM_FREELIST_DEFAULT 0 #define VM_FREELIST_ISADMA 1 /* * The largest allocation size is 1MB. */ #define VM_NFREEORDER 9 /* * Only one memory domain. */ #ifndef VM_NDOMAIN #define VM_NDOMAIN 1 #endif /* * Disable superpage reservations. */ #ifndef VM_NRESERVLEVEL #define VM_NRESERVLEVEL 0 #endif #define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0) #define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0) #define VM_MIN_ADDRESS (0x00001000) #ifdef ARM_USE_SMALL_ALLOC /* * ARM_KERN_DIRECTMAP is used to make sure there's enough space between * VM_MAXUSER_ADDRESS and KERNBASE to map the whole memory. * It has to be a compile-time constant, even if arm_init_smallalloc(), * which will do the mapping, gets the real amount of memory at runtime, * because VM_MAXUSER_ADDRESS is a constant. */ #ifndef ARM_KERN_DIRECTMAP #define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */ #endif #define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP #else /* ARM_USE_SMALL_ALLOC */ #define VM_MAXUSER_ADDRESS KERNBASE #endif /* ARM_USE_SMALL_ALLOC */ #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS #define USRSTACK VM_MAXUSER_ADDRESS /* initial pagein size of beginning of executable file */ #ifndef VM_INITIAL_PAGEIN #define VM_INITIAL_PAGEIN 16 #endif #ifndef VM_MIN_KERNEL_ADDRESS #define VM_MIN_KERNEL_ADDRESS KERNBASE #endif #define VM_MAX_KERNEL_ADDRESS 0xffffffff /* * Virtual size (bytes) for various kernel submaps. */ #ifndef VM_KMEM_SIZE #define VM_KMEM_SIZE (12*1024*1024) #endif #define MAXTSIZ (16*1024*1024) #define DFLDSIZ (128*1024*1024) #define MAXDSIZ (512*1024*1024) #define DFLSSIZ (2*1024*1024) #define MAXSSIZ (8*1024*1024) #define SGROWSIZ (128*1024) #ifdef ARM_USE_SMALL_ALLOC #define UMA_MD_SMALL_ALLOC #endif /* ARM_USE_SMALL_ALLOC */ #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ #endif /* _MACHINE_VMPARAM_H_ */