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/* $OpenBSD: vmparam.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */ /* $NetBSD: vmparam.h,v 1.5 1994/10/26 21:10:10 cgd 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. * 4. 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 * JNPR: vmparam.h,v 1.3.2.1 2007/09/10 06:01:28 girish * $FreeBSD: release/9.1.0/sys/mips/include/vmparam.h 221855 2011-05-13 19:35:01Z mdf $ */ #ifndef _MACHINE_VMPARAM_H_ #define _MACHINE_VMPARAM_H_ /* * Machine dependent constants mips processors. */ /* * Virtual memory related constants, all in bytes */ #ifndef MAXTSIZ #define MAXTSIZ (128UL*1024*1024) /* max text size */ #endif #ifndef DFLDSIZ #define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1*1024UL*1024*1024) /* max data size */ #endif #ifndef DFLSSIZ #define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ #define MAXSSIZ (64UL*1024*1024) /* max stack size */ #endif #ifndef SGROWSIZ #define SGROWSIZ (128UL*1024) /* amount to grow stack */ #endif /* * Mach derived constants */ /* user/kernel map constants */ #define VM_MIN_ADDRESS ((vm_offset_t)0x00000000) #define VM_MAX_ADDRESS ((vm_offset_t)(intptr_t)(int32_t)0xffffffff) #define VM_MINUSER_ADDRESS ((vm_offset_t)0x00000000) #ifdef __mips_n64 #define VM_MAXUSER_ADDRESS (VM_MINUSER_ADDRESS + (NPDEPG * NBSEG)) #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xc000000000000000) #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + (NPDEPG * NBSEG)) #else #define VM_MAXUSER_ADDRESS ((vm_offset_t)0x80000000) #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xC0000000) #define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xFFFFC000) #endif #define KERNBASE ((vm_offset_t)(intptr_t)(int32_t)0x80000000) /* * USRSTACK needs to start a little below 0x8000000 because the R8000 * and some QED CPUs perform some virtual address checks before the * offset is calculated. */ #define USRSTACK (VM_MAXUSER_ADDRESS - PAGE_SIZE) /* * Only one memory domain. */ #ifndef VM_NDOMAIN #define VM_NDOMAIN 1 #endif /* * Disable superpage reservations. (not sure if this is right * I copied it from ARM) */ #ifndef VM_NRESERVLEVEL #define VM_NRESERVLEVEL 0 #endif /* virtual sizes (bytes) for various kernel submaps */ #ifndef VM_KMEM_SIZE #define VM_KMEM_SIZE (12 * 1024 * 1024) #endif /* * How many physical pages per KVA page allocated. * min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX) * is the total KVA space allocated for kmem_map. */ #ifndef VM_KMEM_SIZE_SCALE #define VM_KMEM_SIZE_SCALE (3) #endif /* * Ceiling on amount of kmem_map kva space. */ #ifndef VM_KMEM_SIZE_MAX #define VM_KMEM_SIZE_MAX (200 * 1024 * 1024) #endif /* initial pagein size of beginning of executable file */ #ifndef VM_INITIAL_PAGEIN #define VM_INITIAL_PAGEIN 16 #endif #define UMA_MD_SMALL_ALLOC /* * max number of non-contig chunks of physical RAM you can have */ #define VM_PHYSSEG_MAX 32 /* * The physical address space is sparsely populated. */ #define VM_PHYSSEG_SPARSE /* * 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 direct mapped (KSEG0) pages. * Note: This usage of DEFAULT may be misleading because we use * DEFAULT for allocating direct mapped pages. The normal page * allocations use HIGHMEM if available, and then DEFAULT. * - HIGHMEM for other pages */ #ifdef __mips_n64 #define VM_NFREELIST 1 #define VM_FREELIST_DEFAULT 0 #define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT #else #define VM_NFREELIST 2 #define VM_FREELIST_DEFAULT 1 #define VM_FREELIST_HIGHMEM 0 #define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT #define VM_HIGHMEM_ADDRESS ((vm_paddr_t)0x20000000) #endif /* * The largest allocation size is 1MB. */ #define VM_NFREEORDER 9 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ #endif /* !_MACHINE_VMPARAM_H_ */