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Diffstat (limited to 'sys/mips/include/vmparam.h')
| -rw-r--r-- | sys/mips/include/vmparam.h | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/sys/mips/include/vmparam.h b/sys/mips/include/vmparam.h new file mode 100644 index 0000000..a524293 --- /dev/null +++ b/sys/mips/include/vmparam.h @@ -0,0 +1,201 @@ +/* $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 + * $FreeBSD$ + */ + +#ifndef _MACHINE_VMPARAM_H_ +#define _MACHINE_VMPARAM_H_ + +/* + * Machine dependent constants mips processors. + */ +/* + * USRTEXT is the start of the user text/data space, while USRSTACK + * is the top (end) of the user stack. + */ +#define USRTEXT (1*PAGE_SIZE) +/* + * 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 0x7ffff000 /* Start of user stack */ + +/* + * 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 + +/* + * The time for a process to be blocked before being very swappable. + * This is a number of seconds which the system takes as being a non-trivial + * amount of real time. You probably shouldn't change this; + * it is used in subtle ways (fractions and multiples of it are, that is, like + * half of a ``long time'', almost a long time, etc.) + * It is related to human patience and other factors which don't really + * change over time. + */ +#define MAXSLP 20 + +/* + * Mach derived constants + */ + +/* user/kernel map constants */ +#define VM_MIN_ADDRESS ((vm_offset_t)0x00000000) +#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x80000000) +#define VM_MAX_MMAP_ADDR VM_MAXUSER_ADDRESS +#define VM_MAX_ADDRESS ((vm_offset_t)0x80000000) + +#ifndef VM_KERNEL_ALLOC_OFFSET +#define VM_KERNEL_ALLOC_OFFSET ((vm_offset_t)0x00000000) +#endif + +#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xC0000000) +#define VM_KERNEL_WIRED_ADDR_END (VM_MIN_KERNEL_ADDRESS + VM_KERNEL_ALLOC_OFFSET) +#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xFFFFC000) + +/* + * 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 + +/* + * 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 1 free list: + * + * - DEFAULT for all systems + */ + +#define VM_NFREELIST 1 +#define VM_FREELIST_DEFAULT 0 + +/* + * The largest allocation size is 1MB. + */ +#define VM_NFREEORDER 9 + +/* + * XXXMIPS: This values need to be changed!!! + */ +#if 0 +#define VM_MIN_ADDRESS ((vm_offset_t)0x0000000000010000) +#define VM_MAXUSER_ADDRESS ((vm_offset_t)MIPS_KSEG0_START-1) +#define VM_MAX_ADDRESS ((vm_offset_t)0x0000000100000000) +#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)MIPS_KSEG3_START) +#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)MIPS_KSEG3_END) +#define KERNBASE (VM_MIN_KERNEL_ADDRESS) + +/* virtual sizes (bytes) for various kernel submaps */ +#define VM_KMEM_SIZE (16*1024*1024) /* XXX ??? */ +#endif + +#define NBSEG 0x400000 /* bytes/segment */ +#define SEGOFSET (NBSEG-1) /* byte offset into segment */ +#define SEGSHIFT 22 /* LOG2(NBSEG) */ + +#endif /* !_MACHINE_VMPARAM_H_ */ |
