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/*
* TLB shootdown specifics for PPC
*
* Copyright (C) 2002 Paul Mackerras, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _PPC_TLB_H
#define _PPC_TLB_H
#include <linux/config.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/page.h>
#include <asm/mmu.h>
#ifdef CONFIG_PPC_STD_MMU
/* Classic PPC with hash-table based MMU... */
struct mmu_gather;
extern void tlb_flush(struct mmu_gather *tlb);
/* Get the generic bits... */
#include <asm-generic/tlb.h>
/* Nothing needed here in fact... */
#define tlb_start_vma(tlb, vma) do { } while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
unsigned long address);
static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
unsigned long address)
{
if (pte_val(*ptep) & _PAGE_HASHPTE)
flush_hash_entry(tlb->mm, ptep, address);
}
#else
/* Embedded PPC with software-loaded TLB, very simple... */
#define tlb_start_vma(tlb, vma) do { } while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
#define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
/* Get the generic bits... */
#include <asm-generic/tlb.h>
#endif /* CONFIG_PPC_STD_MMU */
#endif /* __PPC_TLB_H */
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