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/* $OpenBSD: vmparam.h,v 1.41 2014/01/24 05:21:19 miod Exp $ */
/*
* Copyright (c) 1988-1994, The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
* Utah $Hdr: vmparam.h 1.16 94/12/16$
*/
#ifndef _MACHINE_VMPARAM_H_
#define _MACHINE_VMPARAM_H_
/*
* Machine dependent constants for HP PA
*/
/*
* USRTEXT is the start of the user text/data space, while USRSTACK
* is the bottm (start) of the user stack.
*/
#define USRTEXT PAGE_SIZE /* Start of user .text */
#define USRSTACK 0x78000000UL /* Start of user stack */
#define SYSCALLGATE 0xC0000000 /* syscall gateway page */
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (512*1024*1024UL) /* max text size */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (16*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (1*1024*1024*1024UL) /* max data size */
#endif
#ifndef BRKSIZ
#define BRKSIZ MAXDSIZ /* heap gap size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (2*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (128*1024*1024UL) /* max stack size */
#endif
#define STACKGAP_RANDOM 256*1024
#ifndef USRIOSIZE
#define USRIOSIZE ((2*HPPA_PGALIAS)/PAGE_SIZE) /* 8mb */
#endif
/*
* PTEs for system V style shared memory.
* This is basically slop for kmempt which we actually allocate (malloc) from.
*/
#ifndef SHMMAXPGS
#define SHMMAXPGS 8192 /* 32mb */
#endif
/* user/kernel map constants */
#define VM_MIN_ADDRESS ((vaddr_t)0)
#define VM_MAXUSER_ADDRESS ((vaddr_t)0xc0000000)
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0001000)
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xef000000)
/* use a small range for PIE to minimize mmap pressure */
#define VM_PIE_MIN_ADDR PAGE_SIZE
#define VM_PIE_MAX_ADDR 0x40000UL
/* virtual sizes (bytes) for various kernel submaps */
#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
#define VM_PHYSSEG_MAX 1 /* this many physmem segments */
#define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM
#define VM_PHYSSEG_NOADD /* XXX until uvm code is fixed */
#if !defined(_LOCORE)
#include <sys/lock.h>
struct pv_entry;
struct vm_page_md {
struct simplelock pvh_lock; /* locks every pv on this list */
struct pv_entry *pvh_list; /* head of list (locked by pvh_lock) */
u_int pvh_attrs; /* to preserve ref/mod */
};
#define VM_MDPAGE_INIT(pg) do { \
simple_lock_init(&(pg)->mdpage.pvh_lock); \
(pg)->mdpage.pvh_list = NULL; \
(pg)->mdpage.pvh_attrs = 0; \
} while (0)
#endif
#endif /* _MACHINE_VMPARAM_H_ */
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