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/* $OpenBSD: pmap.h,v 1.14 2001/03/22 23:36:52 niklas Exp $ */
/* $NetBSD: pmap.h,v 1.16 1996/03/31 22:15:32 pk Exp $ */
/*
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* The Mach Operating System project at Carnegie-Mellon University.
*
* 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.
*
* @(#)pmap.h 8.1 (Berkeley) 6/11/93
*
*
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Avadis Tevanian, Jr.
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Machine address mapping definitions -- machine-independent
* section. [For machine-dependent section, see "machine/pmap.h".]
*/
#ifndef _PMAP_VM_
#define _PMAP_VM_
/*
* Each machine dependent implementation is expected to
* keep certain statistics. They may do this anyway they
* so choose, but are expected to return the statistics
* in the following structure.
*/
struct pmap_statistics {
long resident_count; /* # of pages mapped (total)*/
long wired_count; /* # of pages wired */
};
typedef struct pmap_statistics *pmap_statistics_t;
#include <machine/pmap.h>
/*
* PMAP_PGARG hack
*
* operations that take place on managed pages used to take PAs.
* this caused us to translate the PA back to a page (or pv_head).
* PMAP_NEW avoids this by passing the vm_page in (pv_head should be
* pointed to by vm_page (or be a part of it)).
*
* applies to: pmap_page_protect, pmap_is_referenced, pmap_is_modified,
* pmap_clear_reference, pmap_clear_modify.
*
* the latter two functions are boolean_t in PMAP_NEW. they return
* TRUE if something was cleared.
*/
#if defined(PMAP_NEW)
#define PMAP_PGARG(PG) (PG)
#else
#define PMAP_PGARG(PG) (VM_PAGE_TO_PHYS(PG))
#endif
#ifdef PMAP_NEW
/*
* Flags passed to pmap_enter(). Note the bottom 3 bits are VM_PROT_*
* bits, used to indicate the access type that was made (to seed modified
* and referenced information).
*/
#define PMAP_WIRED 0x00000010 /* wired mapping */
#define PMAP_CANFAIL 0x00000020 /* can fail if resource shortage */
#endif
#ifndef PMAP_EXCLUDE_DECLS /* Used in Sparc port to virtualize pmap mod */
#ifdef _KERNEL
__BEGIN_DECLS
void *pmap_bootstrap_alloc __P((int));
void pmap_change_wiring __P((pmap_t, vaddr_t, boolean_t));
#if defined(PMAP_NEW)
#if 0
void pmap_unwire __P((pmap_t, vaddr_t));
#endif
#if !defined(pmap_clear_modify)
boolean_t pmap_clear_modify __P((struct vm_page *));
#endif
#if !defined(pmap_clear_reference)
boolean_t pmap_clear_reference __P((struct vm_page *));
#endif
#else /* PMAP_NEW */
void pmap_clear_modify __P((paddr_t pa));
void pmap_clear_reference __P((paddr_t pa));
#endif /* PMAP_NEW */
void pmap_collect __P((pmap_t));
void pmap_copy __P((pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t));
void pmap_copy_page __P((paddr_t, paddr_t));
#if defined(PMAP_NEW)
struct pmap *pmap_create __P((void));
#else
pmap_t pmap_create __P((vsize_t));
#endif
void pmap_destroy __P((pmap_t));
#ifdef PMAP_NEW
#ifdef notyet
int pmap_enter __P((pmap_t, vaddr_t, paddr_t, vm_prot_t, int));
boolean_t pmap_extract __P((pmap_t, vaddr_t, paddr_t *));
#else
int _pmap_enter __P((pmap_t, vaddr_t, paddr_t, vm_prot_t, int));
#define pmap_enter(pmap, va, pa, prot, wired, access_type) \
(_pmap_enter((pmap), (va), (pa), (prot), ((wired) ? PMAP_WIRED : 0)))
boolean_t _pmap_extract __P((pmap_t, vaddr_t, paddr_t *));
#endif
#else
void pmap_enter __P((pmap_t,
vaddr_t, paddr_t, vm_prot_t, boolean_t, vm_prot_t));
#endif
paddr_t pmap_extract __P((pmap_t, vaddr_t));
#if defined(PMAP_NEW) && defined(PMAP_GROWKERNEL)
vaddr_t pmap_growkernel __P((vaddr_t));
#endif
#if !defined(MACHINE_NONCONTIG) && !defined(MACHINE_NEW_NONCONTIG)
void pmap_init __P((paddr_t, paddr_t));
#else
void pmap_init __P((void));
#endif
#if defined(PMAP_NEW)
void pmap_kenter_pa __P((vaddr_t, paddr_t, vm_prot_t));
void pmap_kenter_pgs __P((vaddr_t, struct vm_page **, int));
void pmap_kremove __P((vaddr_t, vsize_t));
#if !defined(pmap_is_modified)
boolean_t pmap_is_modified __P((struct vm_page *));
#endif
#if !defined(pmap_is_referenced)
boolean_t pmap_is_referenced __P((struct vm_page *));
#endif
#else /* PMAP_NEW */
boolean_t pmap_is_modified __P((paddr_t pa));
boolean_t pmap_is_referenced __P((paddr_t pa));
#endif /* PMAP_NEW */
#if !defined(MACHINE_NEW_NONCONTIG)
#ifndef pmap_page_index
int pmap_page_index __P((paddr_t));
#endif
#endif /* ! MACHINE_NEW_NONCONTIG */
#if defined(PMAP_NEW)
void pmap_page_protect __P((struct vm_page *, vm_prot_t));
#else
void pmap_page_protect __P((paddr_t, vm_prot_t));
#endif
void pmap_pageable __P((pmap_t,
vaddr_t, vaddr_t, boolean_t));
#if !defined(pmap_phys_address)
paddr_t pmap_phys_address __P((int));
#endif
void pmap_pinit __P((pmap_t));
void pmap_protect __P((pmap_t,
vaddr_t, vaddr_t, vm_prot_t));
void pmap_reference __P((pmap_t));
void pmap_release __P((pmap_t));
void pmap_remove __P((pmap_t, vaddr_t, vaddr_t));
void pmap_update __P((void));
void pmap_zero_page __P((paddr_t));
#ifdef MACHINE_NONCONTIG
u_int pmap_free_pages __P((void));
boolean_t pmap_next_page __P((paddr_t *));
#endif
#if defined(MACHINE_NEW_NONCONTIG) && defined(PMAP_STEAL_MEMORY)
vaddr_t pmap_steal_memory __P((vsize_t, paddr_t *, paddr_t *));
#else
void pmap_virtual_space __P((vaddr_t *, vaddr_t *));
#endif
#if defined(PMAP_FORK)
void pmap_fork __P((pmap_t, pmap_t));
#endif
__END_DECLS
#endif /* kernel*/
#endif /* PMAP_EXCLUDE_DECLS */
#endif /* _PMAP_VM_ */
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