FreeBSD/Linux Kernel Cross Reference
sys/powerpc/aim/mmu_oea64.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (C) 2010 Nathan Whitehorn
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 TOOLS GMBH 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _POWERPC_AIM_MMU_OEA64_H
    #define _POWERPC_AIM_MMU_OEA64_H
    
    #include "opt_pmap.h"
    
    #include <vm/vm_extern.h>
    #include <machine/mmuvar.h>
    
    struct dump_context {
            u_long ptex;
            u_long ptex_end;
            size_t blksz;
    };
    
    extern const struct mmu_kobj oea64_mmu;
    
    /*
     * Helper routines
     */
    
    /* Allocate physical memory for use in moea64_bootstrap. */
    vm_offset_t     moea64_bootstrap_alloc(vm_size_t size, vm_size_t align);
    /* Set an LPTE structure to match the contents of a PVO */
    void    moea64_pte_from_pvo(const struct pvo_entry *pvo, struct lpte *lpte);
    
    /*
     * Flags
     */
    
    #define MOEA64_PTE_PROT_UPDATE  1
    #define MOEA64_PTE_INVALIDATE   2
    
    /*
     * Bootstrap subroutines
     *
     * An MMU_BOOTSTRAP() implementation looks like this:
     *   moea64_early_bootstrap();
     *   Allocate Page Table
     *   moea64_mid_bootstrap();
     *   Add mappings for MMU resources
     *   moea64_late_bootstrap();
     */
    
    void            moea64_early_bootstrap(vm_offset_t kernelstart,
                        vm_offset_t kernelend);
    void            moea64_mid_bootstrap(vm_offset_t kernelstart,
                        vm_offset_t kernelend);
    void            moea64_late_bootstrap(vm_offset_t kernelstart,
                        vm_offset_t kernelend);
    
    /* "base" install method for initializing moea64 pmap ifuncs */
    void            moea64_install(void);
    
    int64_t         moea64_pte_replace(struct pvo_entry *, int);
    int64_t         moea64_pte_insert(struct pvo_entry *);
    int64_t         moea64_pte_unset(struct pvo_entry *);
    int64_t         moea64_pte_clear(struct pvo_entry *, uint64_t);
    int64_t         moea64_pte_synch(struct pvo_entry *);
    int64_t         moea64_pte_insert_sp(struct pvo_entry *);
    int64_t         moea64_pte_unset_sp(struct pvo_entry *);
    int64_t         moea64_pte_replace_sp(struct pvo_entry *);
    
    typedef int64_t (*moea64_pte_replace_t)(struct pvo_entry *, int);
    typedef int64_t (*moea64_pte_insert_t)(struct pvo_entry *);
    typedef int64_t (*moea64_pte_unset_t)(struct pvo_entry *);
    typedef int64_t (*moea64_pte_clear_t)(struct pvo_entry *, uint64_t);
    typedef int64_t (*moea64_pte_synch_t)(struct pvo_entry *);
    typedef int64_t (*moea64_pte_insert_sp_t)(struct pvo_entry *);
    typedef int64_t (*moea64_pte_unset_sp_t)(struct pvo_entry *);
    typedef int64_t (*moea64_pte_replace_sp_t)(struct pvo_entry *);
   
   struct moea64_funcs {
           moea64_pte_replace_t    pte_replace;
           moea64_pte_insert_t     pte_insert;
           moea64_pte_unset_t      pte_unset;
           moea64_pte_clear_t      pte_clear;
           moea64_pte_synch_t      pte_synch;
           moea64_pte_insert_sp_t  pte_insert_sp;
           moea64_pte_unset_sp_t   pte_unset_sp;
           moea64_pte_replace_sp_t pte_replace_sp;
   };
   
   extern struct moea64_funcs *moea64_ops;
   
   static inline uint64_t
   moea64_pte_vpn_from_pvo_vpn(const struct pvo_entry *pvo)
   {
           return ((pvo->pvo_vpn >> (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) &
               LPTE_AVPN_MASK);
   }
   
   /*
    * Statistics
    */
   
   #ifdef MOEA64_STATS
   extern u_int    moea64_pte_valid;
   extern u_int    moea64_pte_overflow;
   #define STAT_MOEA64(x)  x
   #else
   #define STAT_MOEA64(x) ((void)0)
   #endif
   
   /*
    * State variables
    */
   
   extern int              moea64_large_page_shift;
   extern uint64_t         moea64_large_page_size;
   extern uint64_t         moea64_large_page_mask;
   extern u_long           moea64_pteg_count;
   extern u_long           moea64_pteg_mask;
   extern int              n_slbs;
   extern bool             moea64_has_lp_4k_16m;
   
   #endif /* _POWERPC_AIM_MMU_OEA64_H */

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