| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * TLB shootdown specifics for PPC |
| 3 | * |
| 4 | * Copyright (C) 2002 Paul Mackerras, IBM Corp. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | #ifndef _PPC_TLB_H |
| 12 | #define _PPC_TLB_H |
| 13 | |
| 14 | #include <linux/config.h> |
| 15 | #include <asm/pgtable.h> |
| 16 | #include <asm/pgalloc.h> |
| 17 | #include <asm/tlbflush.h> |
| 18 | #include <asm/page.h> |
| 19 | #include <asm/mmu.h> |
| 20 | |
| 21 | #ifdef CONFIG_PPC_STD_MMU |
| 22 | /* Classic PPC with hash-table based MMU... */ |
| 23 | |
| 24 | struct mmu_gather; |
| 25 | extern void tlb_flush(struct mmu_gather *tlb); |
| 26 | |
| 27 | /* Get the generic bits... */ |
| 28 | #include <asm-generic/tlb.h> |
| 29 | |
| 30 | /* Nothing needed here in fact... */ |
| 31 | #define tlb_start_vma(tlb, vma) do { } while (0) |
| 32 | #define tlb_end_vma(tlb, vma) do { } while (0) |
| 33 | |
| 34 | extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, |
| 35 | unsigned long address); |
| 36 | |
| 37 | static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, |
| 38 | unsigned long address) |
| 39 | { |
| 40 | if (pte_val(*ptep) & _PAGE_HASHPTE) |
| 41 | flush_hash_entry(tlb->mm, ptep, address); |
| 42 | } |
| 43 | |
| 44 | #else |
| 45 | /* Embedded PPC with software-loaded TLB, very simple... */ |
| 46 | |
| 47 | #define tlb_start_vma(tlb, vma) do { } while (0) |
| 48 | #define tlb_end_vma(tlb, vma) do { } while (0) |
| 49 | #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) |
| 50 | #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) |
| 51 | |
| 52 | /* Get the generic bits... */ |
| 53 | #include <asm-generic/tlb.h> |
| 54 | |
| 55 | #endif /* CONFIG_PPC_STD_MMU */ |
| 56 | |
| 57 | #endif /* __PPC_TLB_H */ |