FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_pmap.h

     /*      $NetBSD: uvm_pmap.h,v 1.18 2004/03/27 00:59:55 he 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 lwp;             /* 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;
    
    #ifdef _KERNEL
    #include <machine/pmap.h>
    #endif
    
    /*
     * 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 */
    
    #ifndef PMAP_EXCLUDE_DECLS      /* Used in Sparc port to virtualize pmap mod */
    #ifdef _KERNEL
    __BEGIN_DECLS
   #if !defined(pmap_kernel)
   struct pmap     *pmap_kernel(void);
   #endif
   
   void            pmap_activate(struct lwp *);
   void            pmap_deactivate(struct lwp *);
   void            pmap_unwire(pmap_t, vaddr_t);
   
   #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)
   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(paddr_t, paddr_t);
   #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_phys_address)
   paddr_t         pmap_phys_address(int);
   #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
   void            pmap_remove_all(struct pmap *);
   #if !defined(pmap_update)
   void            pmap_update(pmap_t);
   #endif
   #if !defined(pmap_resident_count)
   long            pmap_resident_count(pmap_t);
   #endif
   #if !defined(pmap_wired_count)
   long            pmap_wired_count(pmap_t);
   #endif
   #if !defined(pmap_zero_page)
   void            pmap_zero_page(paddr_t);
   #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
   
   #if defined(PMAP_FORK)
   void            pmap_fork(pmap_t, pmap_t);
   #endif
   __END_DECLS
   #endif  /* kernel*/
   #endif  /* PMAP_EXCLUDE_DECLS */
   
   #endif /* _PMAP_VM_ */

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