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/* $NetBSD: vmparam.h,v 1.2 2006/07/03 17:01:45 cherry Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
*
* @(#)vmparam.h 5.9 (Berkeley) 5/12/91
*/
#ifndef _VMPARAM_H_
#define _VMPARAM_H_
#include <sys/tree.h>
#define USRSTACK VM_MAX_ADDRESS /* XXX: Revisit vm address space. */
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (1<<30) /* max text size (1G) */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (1<<27) /* initial data size (128M) */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (1<<30) /* max data size (1G) */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (1<<21) /* initial stack size (2M) */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (1<<28) /* max stack size (256M) */
#endif
#ifndef SGROWSIZ
#define SGROWSIZ (128UL*1024) /* amount to grow stack */
#endif
/*
* PTEs for mapping user space into the kernel for phyio operations.
* 64 pte's are enough to cover 8 disks * MAXBSIZE.
*/
#ifndef USRIOSIZE
#define USRIOSIZE 64
#endif
/*
* Manipulating region bits of an address.
*/
#define IA64_RR_BASE(n) (((u_int64_t) (n)) << 61)
#define IA64_RR_MASK(x) ((x) & ((1L << 61) - 1))
#define IA64_PHYS_TO_RR6(x) ((x) | IA64_RR_BASE(6))
#define IA64_PHYS_TO_RR7(x) ((x) | IA64_RR_BASE(7))
#define IA64_ID_PAGE_SHIFT 28 /* 256M */
#define IA64_ID_PAGE_SIZE (1 << IA64_ID_PAGE_SHIFT)
#define IA64_ID_PAGE_MASK (IA64_ID_PAGE_SIZE-1)
#define IA64_BACKINGSTORE IA64_RR_BASE(4)
#define PAGE_SHIFT 14 /* 16K pages by default. */
#define PAGE_SIZE (1 << PAGE_SHIFT)
#define PAGE_MASK (PAGE_SIZE - 1)
/* user/kernel map constants */
#define VM_MIN_ADDRESS ((vaddr_t)0)
#define VM_MAX_ADDRESS ((vaddr_t) IA64_RR_BASE(5))
#define VM_GATEWAY_SIZE PAGE_SIZE
#define VM_MAXUSER_ADDRESS (VM_MAX_ADDRESS + VM_GATEWAY_SIZE)
#define VM_MIN_KERNEL_ADDRESS VM_MAXUSER_ADDRESS
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) (IA64_RR_BASE(6) - 1))
#define VM_PHYSSEG_MAX 16 /* XXX: */
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
#define VM_PHYSSEG_NOADD /* no more after vm_mem_init */
#define VM_NFREELIST 1 /* XXX: */
#define VM_FREELIST_DEFAULT 0 /* XXX: */
/* virtual sizes (bytes) for various kernel submaps */
#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
#ifndef _LOCORE
/*
* pmap-specific data store in the vm_page structure.
*/
#define __HAVE_VM_PAGE_MD
struct vm_page_md {
TAILQ_HEAD(,pv_entry) pv_list; /* pv_entry list */
int pv_list_count;
struct simplelock pv_slock; /* lock on this head */
int pvh_attrs; /* page attributes */
};
#define VM_MDPAGE_INIT(pg) \
do { \
TAILQ_INIT(&(pg)->mdpage.pv_list); \
simple_lock_init(&(pg)->mdpage.pv_slock); \
} while (/*CONSTCOND*/0)
#endif /*_LOCORE*/
#endif /* _VMPARAM_H_ */
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