text: /*-
   * 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 <machine/mmuvar.h>
  
  struct dump_context {
  	u_long ptex;
  	u_long ptex_end;
  	size_t blksz;
  };
  
  extern mmu_def_t 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(mmu_t mmup, vm_offset_t kernelstart,
  		    vm_offset_t kernelend);
  void		moea64_mid_bootstrap(mmu_t mmup, vm_offset_t kernelstart,
  		    vm_offset_t kernelend);
  void		moea64_late_bootstrap(mmu_t mmup, vm_offset_t kernelstart,
  		    vm_offset_t kernelend);
  
  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;
  
  #endif /* _POWERPC_AIM_MMU_OEA64_H */
  
  