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Commit | Line | Data |
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1da177e4 LT |
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 */ |