133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
/* $NetBSD: vmparam.h,v 1.2 2006/07/03 17:01:45 cherry Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)vmparam.h 5.9 (Berkeley) 5/12/91
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*/
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#ifndef _VMPARAM_H_
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#define _VMPARAM_H_
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#include <sys/tree.h>
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#define USRSTACK VM_MAX_ADDRESS /* XXX: Revisit vm address space. */
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/*
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* Virtual memory related constants, all in bytes
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*/
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#ifndef MAXTSIZ
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#define MAXTSIZ (1<<30) /* max text size (1G) */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (1<<27) /* initial data size (128M) */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (1<<30) /* max data size (1G) */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (1<<21) /* initial stack size (2M) */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (1<<28) /* max stack size (256M) */
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#endif
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#ifndef SGROWSIZ
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#define SGROWSIZ (128UL*1024) /* amount to grow stack */
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#endif
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/*
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* PTEs for mapping user space into the kernel for phyio operations.
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* 64 pte's are enough to cover 8 disks * MAXBSIZE.
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*/
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#ifndef USRIOSIZE
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#define USRIOSIZE 64
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#endif
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/*
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* Manipulating region bits of an address.
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*/
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#define IA64_RR_BASE(n) (((u_int64_t) (n)) << 61)
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#define IA64_RR_MASK(x) ((x) & ((1L << 61) - 1))
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#define IA64_PHYS_TO_RR6(x) ((x) | IA64_RR_BASE(6))
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#define IA64_PHYS_TO_RR7(x) ((x) | IA64_RR_BASE(7))
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#define IA64_ID_PAGE_SHIFT 28 /* 256M */
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#define IA64_ID_PAGE_SIZE (1 << IA64_ID_PAGE_SHIFT)
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#define IA64_ID_PAGE_MASK (IA64_ID_PAGE_SIZE-1)
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#define IA64_BACKINGSTORE IA64_RR_BASE(4)
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#define PAGE_SHIFT 14 /* 16K pages by default. */
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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/* user/kernel map constants */
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#define VM_MIN_ADDRESS ((vaddr_t)0)
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#define VM_MAX_ADDRESS ((vaddr_t) IA64_RR_BASE(5))
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#define VM_GATEWAY_SIZE PAGE_SIZE
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#define VM_MAXUSER_ADDRESS (VM_MAX_ADDRESS + VM_GATEWAY_SIZE)
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#define VM_MIN_KERNEL_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) (IA64_RR_BASE(6) - 1))
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#define VM_PHYSSEG_MAX 16 /* XXX: */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
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#define VM_PHYSSEG_NOADD /* no more after vm_mem_init */
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#define VM_NFREELIST 1 /* XXX: */
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#define VM_FREELIST_DEFAULT 0 /* XXX: */
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
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#ifndef _LOCORE
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/*
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* pmap-specific data store in the vm_page structure.
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*/
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#define __HAVE_VM_PAGE_MD
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struct vm_page_md {
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TAILQ_HEAD(,pv_entry) pv_list; /* pv_entry list */
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int pv_list_count;
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struct simplelock pv_slock; /* lock on this head */
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int pvh_attrs; /* page attributes */
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};
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#define VM_MDPAGE_INIT(pg) \
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do { \
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TAILQ_INIT(&(pg)->mdpage.pv_list); \
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simple_lock_init(&(pg)->mdpage.pv_slock); \
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} while (/*CONSTCOND*/0)
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#endif /*_LOCORE*/
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#endif /* _VMPARAM_H_ */
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