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/* $OpenBSD: uvm_pmap.h,v 1.31 2022/09/10 20:35:29 miod Exp $ */
/* $NetBSD: uvm_pmap.h,v 1.1 2000/06/27 09:00:14 mrg 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. 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_
struct proc; /* for pmap_activate()/pmap_deactivate() proto */
/*
* 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>
/*
* Flags passed to pmap_enter(). Note the bottom 3 bits are 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 */
#define PMAP_MD0 0x00000040 /* Machine dependant */
#define PMAP_MD1 0x00000080 /* Machine dependant */
#define PMAP_MD2 0x00000100 /* Machine dependant */
#define PMAP_MD3 0x00000200 /* Machine dependant */
#ifndef PMAP_WC
#define PMAP_WC 0
#endif
#ifndef PMAP_PREFER
#define PMAP_PREFER_ALIGN() 0
#define PMAP_PREFER_OFFSET(off) 0
#define PMAP_PREFER(addr, off) (addr)
#endif
#ifdef _KERNEL
__BEGIN_DECLS
#ifndef pmap_activate
void pmap_activate(struct proc *);
#endif
#ifndef pmap_deactivate
void pmap_deactivate(struct proc *);
#endif
#ifndef pmap_unwire
void pmap_unwire(pmap_t, vaddr_t);
#endif
#if !defined(pmap_clear_modify)
boolean_t pmap_clear_modify(struct vm_page *);
#endif
#if !defined(pmap_clear_reference)
boolean_t pmap_clear_reference(struct vm_page *);
#endif
#if !defined(pmap_collect) && defined(__HAVE_PMAP_COLLECT)
void pmap_collect(pmap_t);
#endif
#if !defined(pmap_copy)
void pmap_copy(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t);
#endif
#if !defined(pmap_copy_page)
void pmap_copy_page(struct vm_page *, struct vm_page *);
#endif
struct pmap *pmap_create(void);
void pmap_destroy(pmap_t);
int pmap_enter(pmap_t,
vaddr_t, paddr_t, vm_prot_t, int);
boolean_t pmap_extract(pmap_t, vaddr_t, paddr_t *);
#if defined(PMAP_GROWKERNEL)
vaddr_t pmap_growkernel(vaddr_t);
#endif
void pmap_init(void);
void pmap_kenter_pa(vaddr_t, paddr_t, vm_prot_t);
void pmap_kremove(vaddr_t, vsize_t);
#if !defined(pmap_is_modified)
boolean_t pmap_is_modified(struct vm_page *);
#endif
#if !defined(pmap_is_referenced)
boolean_t pmap_is_referenced(struct vm_page *);
#endif
void pmap_page_protect(struct vm_page *, vm_prot_t);
#if !defined(pmap_proc_iflush)
void pmap_proc_iflush(struct process *, vaddr_t, vsize_t);
#endif
void pmap_protect(pmap_t, vaddr_t, vaddr_t, vm_prot_t);
#if !defined(pmap_reference)
void pmap_reference(pmap_t);
#endif
#if !defined(pmap_remove)
void pmap_remove(pmap_t, vaddr_t, vaddr_t);
#endif
#if !defined(pmap_remove_holes)
void pmap_remove_holes(struct vmspace *);
#endif
#if !defined(pmap_update)
void pmap_update(pmap_t);
#endif
#if !defined(pmap_zero_page)
void pmap_zero_page(struct vm_page *);
#endif
void pmap_virtual_space(vaddr_t *, vaddr_t *);
#if defined(PMAP_STEAL_MEMORY)
vaddr_t pmap_steal_memory(vsize_t, vaddr_t *, vaddr_t *);
#endif
/* nested pmaps are used in i386/amd64 vmm */
#ifndef pmap_nested
#define pmap_nested(pm) 0
#endif
__END_DECLS
#endif /* kernel*/
#endif /* _PMAP_VM_ */
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