Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 2 | * TLB shootdown specifics for powerpc |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 4 | * Copyright (C) 2002 Anton Blanchard, IBM Corp. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Copyright (C) 2002 Paul Mackerras, IBM Corp. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | */ |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 12 | #ifndef _ASM_POWERPC_TLB_H |
| 13 | #define _ASM_POWERPC_TLB_H |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 14 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 16 | #ifndef __powerpc64__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <asm/pgtable.h> |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 18 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <asm/pgalloc.h> |
| 20 | #include <asm/tlbflush.h> |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 21 | #ifndef __powerpc64__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <asm/page.h> |
| 23 | #include <asm/mmu.h> |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 24 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | struct mmu_gather; |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 27 | |
| 28 | #define tlb_start_vma(tlb, vma) do { } while (0) |
| 29 | #define tlb_end_vma(tlb, vma) do { } while (0) |
| 30 | |
| 31 | #if !defined(CONFIG_PPC_STD_MMU) |
| 32 | |
| 33 | #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) |
| 34 | |
| 35 | #elif defined(__powerpc64__) |
| 36 | |
| 37 | extern void pte_free_finish(void); |
| 38 | |
| 39 | static inline void tlb_flush(struct mmu_gather *tlb) |
| 40 | { |
Benjamin Herrenschmidt | 6ad8d01 | 2007-05-27 15:18:22 +1000 | [diff] [blame^] | 41 | struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch); |
| 42 | |
| 43 | /* If there's a TLB batch pending, then we must flush it because the |
| 44 | * pages are going to be freed and we really don't want to have a CPU |
| 45 | * access a freed page because it has a stale TLB |
| 46 | */ |
| 47 | if (tlbbatch->index) |
| 48 | __flush_tlb_pending(tlbbatch); |
| 49 | |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 50 | pte_free_finish(); |
| 51 | } |
| 52 | |
| 53 | #else |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | extern void tlb_flush(struct mmu_gather *tlb); |
| 56 | |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 57 | #endif |
| 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | /* Get the generic bits... */ |
| 60 | #include <asm-generic/tlb.h> |
| 61 | |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 62 | #if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 64 | #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) |
| 65 | |
| 66 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, |
| 68 | unsigned long address); |
| 69 | |
| 70 | static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, |
| 71 | unsigned long address) |
| 72 | { |
| 73 | if (pte_val(*ptep) & _PAGE_HASHPTE) |
| 74 | flush_hash_entry(tlb->mm, ptep, address); |
| 75 | } |
| 76 | |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 77 | #endif |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 78 | #endif /* __KERNEL__ */ |
Stephen Rothwell | 9a0f78f | 2005-11-04 10:20:27 +1100 | [diff] [blame] | 79 | #endif /* __ASM_POWERPC_TLB_H */ |