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- /*
- * Copyright (c) 1991 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.
- *
- * from: @(#)pmap.h 7.4 (Berkeley) 5/7/91
- * $Id: pmap.h,v 1.5 1993/08/29 12:12:20 brezak Exp $
- *
- *
- * 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.
- */
-
- #ifndef _VM_PMAP_H_
- #define _VM_PMAP_H_
-
- /*
- * Machine address mapping definitions -- machine-independent
- * section. [For machine-dependent section, see "machine/pmap.h".]
- */
-
- #include <machine/pmap.h>
-
- #ifdef KERNEL
-
- /*
- * Currently this option is used on the i386 to be able to handle the
- * memory from 0-640k and 1M+.
- */
- #ifdef MACHINE_NONCONTIG
- /*
- * Routines used for initialization.
- * There is traditionally also a pmap_bootstrap,
- * used very early by machine-dependent code,
- * but it is not part of the interface.
- */
- extern vm_offset_t pmap_steal_memory(); /* During VM initialization,
- * steal a chunk of memory.
- */
- extern unsigned int pmap_free_pages(); /* During VM initialization,
- * report remaining unused
- * physical pages.
- */
- extern void pmap_startup(); /* During VM initialization,
- * use remaining physical pages
- * to allocate page frames.
- */
- extern void pmap_init(); /* Initialization,
- * after kernel runs
- * in virtual memory.
- */
-
- /*
- * Currently the following isn't really an option. So don't define it.
- */
- #undef MACHINE_PAGES
- #ifndef MACHINE_PAGES
- /*
- * If machine/pmap.h defines MACHINE_PAGES, it must implement
- * the above functions. The pmap modules has complete control.
- * Otherwise, it must implement
- * pmap_free_pages
- * pmap_virtual_space
- * pmap_next_page
- * pmap_init
- * and vm/vm_page.c implements pmap_steal_memory and pmap_startup
- * using pmap_free_pages, pmap_next_page, pmap_virtual_space,
- * and pmap_enter. pmap_free_pages may over-estimate the number
- * of unused physical pages, and pmap_next_page may return FALSE
- * to indicate that there are no more unused pages to return.
- * However, for best performance pmap_free_pages should be accurate.
- */
- extern boolean_t pmap_next_page(); /* During VM initialization,
- * return the next unused
- * physical page.
- */
- extern void pmap_virtual_space(); /* During VM initialization,
- * report virtual space
- * available for the kernel.
- */
- #endif /* MACHINE_PAGES */
-
- #endif /* MACHINE_NONCONTIG */
-
- #ifdef MACHINE_NONCONTIG
- void pmap_init __P((void));
- #else
- void pmap_init __P((vm_offset_t s, vm_offset_t e));
- #endif
- void pmap_pinit __P((struct pmap *pmap));
- void pmap_release __P((struct pmap *pmap));
- vm_offset_t pmap_map();
- pmap_t pmap_create();
- void pmap_destroy();
- void pmap_reference();
- void pmap_remove();
- void pmap_page_protect();
- void pmap_protect();
- void pmap_enter();
- vm_offset_t pmap_extract();
- void pmap_update();
- void pmap_collect();
- void pmap_activate();
- void pmap_deactivate();
- void pmap_copy();
- void pmap_statistics();
- void pmap_clear_reference();
- boolean_t pmap_is_referenced();
- #ifndef pmap_kernel
- pmap_t pmap_kernel();
- #endif
-
- void pmap_redzone();
- boolean_t pmap_access();
-
- extern pmap_t kernel_pmap;
- #endif
-
- #endif /* !_VM_PMAP_H_ */
-