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Diffstat (limited to 'sys/arch/sparc64/include/vmparam.h')
| -rw-r--r-- | sys/arch/sparc64/include/vmparam.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/sys/arch/sparc64/include/vmparam.h b/sys/arch/sparc64/include/vmparam.h new file mode 100644 index 00000000000..f24309c3b0f --- /dev/null +++ b/sys/arch/sparc64/include/vmparam.h @@ -0,0 +1,176 @@ +/* $NetBSD: vmparam.h,v 1.18 2001/05/01 02:19:19 thorpej 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. 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, Berkeley and its contributors. + * 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. + * + * @(#)vmparam.h 8.1 (Berkeley) 6/11/93 + */ + +/* + * Machine dependent constants for Sun-4c SPARC + */ + +#ifndef VMPARAM_H +#define VMPARAM_H + +/* + * USRTEXT is the start of the user text/data space, while USRSTACK + * is the top (end) of the user stack. + */ +#define USRTEXT 0x2000 /* Start of user text */ +#define USRSTACK32 0xffffe000L +#ifdef __arch64__ +#define USRSTACK 0xffffffffffffe000L +#else +#define USRSTACK USRSTACK32 +#endif + +/* + * Virtual memory related constants, all in bytes + */ +/* #ifdef __arch64__ */ +#if 0 +/* + * 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 (4L*1024*1024*1024) /* max text size */ +#endif +#ifndef DFLDSIZ +#define DFLDSIZ (128L*1024*1024) /* initial data size limit */ +#endif +#ifndef MAXDSIZ +#define MAXDSIZ (1L<<39) /* max data size */ +#endif +#ifndef DFLSSIZ +#define DFLSSIZ (1024*1024) /* initial stack size limit */ +#endif +#ifndef MAXSSIZ +#define MAXSSIZ MAXDSIZ /* max stack size */ +#endif +#else +/* + * 32-bit limits: + * + * We only have 4GB to play with. Limit stack, data, and text + * each to half of that. + * + * This is silly. Apparently if we go above these numbers + * integer overflows in other parts of the kernel cause hangs. + */ +#ifndef MAXTSIZ +#define MAXTSIZ (1*1024*1024*1024) /* max text size */ +#endif +#ifndef DFLDSIZ +#define DFLDSIZ (128*1024*1024) /* initial data size limit */ +#endif +#ifndef MAXDSIZ +#define MAXDSIZ (1*1024*1024*1024) /* max data size */ +#endif +#ifndef DFLSSIZ +#define DFLSSIZ (1024*1024) /* initial stack size limit */ +#endif +#ifndef MAXSSIZ +#define MAXSSIZ (8*1024*1024) /* max stack size */ +#endif +#endif +/* + * Size of shared memory map + */ +#ifndef SHMMAXPGS +#define SHMMAXPGS 1024 +#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 ((vaddr_t)0) +#define VM_MAX_ADDRESS ((vaddr_t)-1) +#define VM_MAXUSER_ADDRESS ((vaddr_t)-1) +#define VM_MAXUSER_ADDRESS32 ((vaddr_t)(0x00000000ffffffffL&~PGOFSET)) + +#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) +#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND) + +#define VM_PHYSSEG_MAX 32 /* up to 32 segments */ +#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH +#define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ + +#define VM_NFREELIST 1 +#define VM_FREELIST_DEFAULT 0 + +#define __HAVE_PMAP_PHYSSEG + +/* + * pmap specific data stored in the vm_physmem[] array + */ + +struct pmap_physseg { + struct pv_entry *pvent; +}; + +#if defined (_KERNEL) && !defined(_LOCORE) +struct vm_map; +vaddr_t dvma_mapin __P((struct vm_map *, vaddr_t, int, int)); +void dvma_mapout __P((vaddr_t, vaddr_t, int)); +#endif +#endif |