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/*-
* SPDX-License-Identifier: (BSD-3-Clause AND MIT-CMU)
*
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* 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.
*
* @(#)vm.h 8.2 (Berkeley) 12/13/93
* @(#)vm_prot.h 8.1 (Berkeley) 6/11/93
* @(#)vm_inherit.h 8.1 (Berkeley) 6/11/93
*
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
* All rights reserved.
*
* Authors: Avadis Tevanian, Jr., Michael Wayne Young
*
* 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.
*
* $FreeBSD$
*/
#ifndef VM_H
#define VM_H
#include <machine/vm.h>
typedef char vm_inherit_t; /* inheritance codes */
#define VM_INHERIT_SHARE ((vm_inherit_t) 0)
#define VM_INHERIT_COPY ((vm_inherit_t) 1)
#define VM_INHERIT_NONE ((vm_inherit_t) 2)
#define VM_INHERIT_ZERO ((vm_inherit_t) 3)
#define VM_INHERIT_DEFAULT VM_INHERIT_COPY
typedef u_char vm_prot_t; /* protection codes */
#define VM_PROT_NONE ((vm_prot_t) 0x00)
#define VM_PROT_READ ((vm_prot_t) 0x01)
#define VM_PROT_WRITE ((vm_prot_t) 0x02)
#define VM_PROT_EXECUTE ((vm_prot_t) 0x04)
#define VM_PROT_COPY ((vm_prot_t) 0x08) /* copy-on-read */
#define VM_PROT_PRIV_FLAG ((vm_prot_t) 0x10)
#define VM_PROT_FAULT_LOOKUP VM_PROT_PRIV_FLAG
#define VM_PROT_QUICK_NOFAULT VM_PROT_PRIV_FLAG /* same to save bits */
#define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
#define VM_PROT_RW (VM_PROT_READ|VM_PROT_WRITE)
#define VM_PROT_DEFAULT VM_PROT_ALL
enum obj_type { OBJT_DEFAULT, OBJT_SWAP, OBJT_VNODE, OBJT_DEVICE, OBJT_PHYS,
OBJT_DEAD, OBJT_SG, OBJT_MGTDEVICE };
typedef u_char objtype_t;
union vm_map_object;
typedef union vm_map_object vm_map_object_t;
struct vm_map_entry;
typedef struct vm_map_entry *vm_map_entry_t;
struct vm_map;
typedef struct vm_map *vm_map_t;
struct vm_object;
typedef struct vm_object *vm_object_t;
#ifndef _KERNEL
/*
* This is defined in <sys/types.h> for the kernel so that non-vm kernel
* sources (mainly Mach-derived ones such as ddb) don't have to include
* vm stuff. Defining it there for applications might break things.
* Define it here for "applications" that include vm headers (e.g.,
* genassym).
*/
#ifndef HAVE_BOOLEAN
typedef int boolean_t;
#endif
/*
* The exact set of memory attributes is machine dependent. However,
* every machine is required to define VM_MEMATTR_DEFAULT and
* VM_MEMATTR_UNCACHEABLE.
*/
typedef char vm_memattr_t; /* memory attribute codes */
/*
* This is defined in <sys/types.h> for the kernel so that vnode_if.h
* doesn't have to include <vm/vm.h>.
*/
struct vm_page;
typedef struct vm_page *vm_page_t;
#endif /* _KERNEL */
struct vm_reserv;
typedef struct vm_reserv *vm_reserv_t;
/*
* Information passed from the machine-independant VM initialization code
* for use by machine-dependant code (mainly for MMU support)
*/
struct kva_md_info {
vm_offset_t buffer_sva;
vm_offset_t buffer_eva;
vm_offset_t clean_sva;
vm_offset_t clean_eva;
};
#define VA_IS_CLEANMAP(va) \
((va) >= kmi.clean_sva && (va) < kmi.clean_eva)
extern struct kva_md_info kmi;
extern void vm_ksubmap_init(struct kva_md_info *);
extern int old_mlock;
extern int vm_ndomains;
#ifdef _KERNEL
struct ucred;
bool swap_reserve(vm_ooffset_t incr);
bool swap_reserve_by_cred(vm_ooffset_t incr, struct ucred *cred);
void swap_reserve_force(vm_ooffset_t incr);
void swap_release(vm_ooffset_t decr);
void swap_release_by_cred(vm_ooffset_t decr, struct ucred *cred);
void swapper(void);
#endif
#endif /* VM_H */
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