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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/powerpc/aim/mmu_oea64.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (C) 2010 Nathan Whitehorn

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 * All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

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 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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 */

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#ifndef _POWERPC_AIM_MMU_OEA64_H

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#define _POWERPC_AIM_MMU_OEA64_H

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#include "opt_pmap.h"

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#include <vm/vm_extern.h>

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#include <machine/mmuvar.h>

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struct dump_context {

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	u_long ptex;

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	u_long ptex_end;

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	size_t blksz;

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};

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extern const struct mmu_kobj oea64_mmu;

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/*

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 * Helper routines

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 */

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/* Allocate physical memory for use in moea64_bootstrap. */

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vm_offset_t	moea64_bootstrap_alloc(vm_size_t size, vm_size_t align);

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/* Set an LPTE structure to match the contents of a PVO */

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void	moea64_pte_from_pvo(const struct pvo_entry *pvo, struct lpte *lpte);

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/*

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 * Flags

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 */

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#define MOEA64_PTE_PROT_UPDATE	1

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#define MOEA64_PTE_INVALIDATE	2

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/*

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 * Bootstrap subroutines

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 *

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 * An MMU_BOOTSTRAP() implementation looks like this:

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 *   moea64_early_bootstrap();

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 *   Allocate Page Table

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 *   moea64_mid_bootstrap();

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 *   Add mappings for MMU resources

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 *   moea64_late_bootstrap();

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 */

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void		moea64_early_bootstrap(vm_offset_t kernelstart,

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		    vm_offset_t kernelend);

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void		moea64_mid_bootstrap(vm_offset_t kernelstart,

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		    vm_offset_t kernelend);

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void		moea64_late_bootstrap(vm_offset_t kernelstart,

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		    vm_offset_t kernelend);

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/* "base" install method for initializing moea64 pmap ifuncs */

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void		moea64_install(void);

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int64_t		moea64_pte_replace(struct pvo_entry *, int);

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int64_t		moea64_pte_insert(struct pvo_entry *);

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int64_t		moea64_pte_unset(struct pvo_entry *);

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int64_t		moea64_pte_clear(struct pvo_entry *, uint64_t);

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int64_t		moea64_pte_synch(struct pvo_entry *);

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int64_t		moea64_pte_insert_sp(struct pvo_entry *);

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int64_t		moea64_pte_unset_sp(struct pvo_entry *);

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int64_t		moea64_pte_replace_sp(struct pvo_entry *);

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typedef int64_t	(*moea64_pte_replace_t)(struct pvo_entry *, int);

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typedef int64_t	(*moea64_pte_insert_t)(struct pvo_entry *);

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typedef int64_t	(*moea64_pte_unset_t)(struct pvo_entry *);

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typedef int64_t	(*moea64_pte_clear_t)(struct pvo_entry *, uint64_t);

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typedef int64_t	(*moea64_pte_synch_t)(struct pvo_entry *);

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typedef int64_t	(*moea64_pte_insert_sp_t)(struct pvo_entry *);

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typedef int64_t	(*moea64_pte_unset_sp_t)(struct pvo_entry *);

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typedef int64_t	(*moea64_pte_replace_sp_t)(struct pvo_entry *);

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struct moea64_funcs {

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	moea64_pte_replace_t	pte_replace;

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	moea64_pte_insert_t	pte_insert;

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	moea64_pte_unset_t	pte_unset;

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	moea64_pte_clear_t	pte_clear;

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	moea64_pte_synch_t	pte_synch;

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	moea64_pte_insert_sp_t	pte_insert_sp;

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	moea64_pte_unset_sp_t	pte_unset_sp;

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	moea64_pte_replace_sp_t	pte_replace_sp;

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};

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extern struct moea64_funcs *moea64_ops;

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static inline uint64_t

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moea64_pte_vpn_from_pvo_vpn(const struct pvo_entry *pvo)

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{

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	return ((pvo->pvo_vpn >> (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) &

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	    LPTE_AVPN_MASK);

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}

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/*

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 * Statistics

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 */

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#ifdef MOEA64_STATS

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extern u_int	moea64_pte_valid;

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extern u_int	moea64_pte_overflow;

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#define STAT_MOEA64(x)	x

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#else

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#define	STAT_MOEA64(x) ((void)0)

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#endif

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/*

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 * State variables

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 */

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extern int		moea64_large_page_shift;

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extern uint64_t		moea64_large_page_size;

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extern uint64_t		moea64_large_page_mask;

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extern u_long		moea64_pteg_count;

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extern u_long		moea64_pteg_mask;

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extern int		n_slbs;

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extern bool		moea64_has_lp_4k_16m;

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#endif /* _POWERPC_AIM_MMU_OEA64_H */

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