bef5da7f98
logic to support modifying the page table through a hypervisor. This uses KOBJ inheritance to provide subclasses of the base 64-bit AIM MMU class with additional methods for page table manipulation. Many thanks to Peter Grehan for suggesting this design and implementing the MMU KOBJ inheritance mechanism.
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*-
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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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* $FreeBSD$
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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 <machine/mmuvar.h>
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extern mmu_def_t 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, u_int);
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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(mmu_t mmup, vm_offset_t kernelstart,
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vm_offset_t kernelend);
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void moea64_mid_bootstrap(mmu_t mmup, vm_offset_t kernelstart,
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vm_offset_t kernelend);
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void moea64_late_bootstrap(mmu_t mmup, vm_offset_t kernelstart,
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vm_offset_t kernelend);
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/*
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* Statistics
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*/
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extern u_int moea64_pte_valid;
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extern u_int moea64_pte_overflow;
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/*
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* State variables
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*/
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extern struct pvo_head *moea64_pvo_table;
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extern int moea64_large_page_shift;
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extern u_int moea64_pteg_count;
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extern u_int moea64_pteg_mask;
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#endif /* _POWERPC_AIM_MMU_OEA64_H */
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