1 #ifndef _ASM_POWERPC_TLBFLUSH_H
2 #define _ASM_POWERPC_TLBFLUSH_H
7 * - flush_tlb_mm(mm) flushes the specified mm context TLB's
8 * - flush_tlb_page(vma, vmaddr) flushes one page
9 * - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
10 * - flush_tlb_range(vma, start, end) flushes a range of pages
11 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
20 #if defined(CONFIG_4xx) || defined(CONFIG_8xx) || defined(CONFIG_FSL_BOOKE)
22 * TLB flushing for software loaded TLB chips
24 * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
25 * flush_tlb_kernel_range are best implemented as tlbia vs
31 extern void _tlbie(unsigned long address, unsigned int pid);
32 extern void _tlbil_all(void);
33 extern void _tlbil_pid(unsigned int pid);
34 extern void _tlbil_va(unsigned long address, unsigned int pid);
36 #if defined(CONFIG_40x) || defined(CONFIG_8xx)
37 #define _tlbia() asm volatile ("tlbia; sync" : : : "memory")
38 #else /* CONFIG_44x || CONFIG_FSL_BOOKE */
39 extern void _tlbia(void);
42 static inline void flush_tlb_mm(struct mm_struct *mm)
44 _tlbil_pid(mm->context.id);
47 static inline void flush_tlb_page(struct vm_area_struct *vma,
50 _tlbil_va(vmaddr, vma ? vma->vm_mm->context.id : 0);
53 static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
56 flush_tlb_page(vma, vmaddr);
59 static inline void flush_tlb_range(struct vm_area_struct *vma,
60 unsigned long start, unsigned long end)
62 _tlbil_pid(vma->vm_mm->context.id);
65 static inline void flush_tlb_kernel_range(unsigned long start,
71 #elif defined(CONFIG_PPC32)
73 * TLB flushing for "classic" hash-MMMU 32-bit CPUs, 6xx, 7xx, 7xxx
75 extern void _tlbie(unsigned long address);
76 extern void _tlbia(void);
78 extern void flush_tlb_mm(struct mm_struct *mm);
79 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
80 extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr);
81 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
83 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
87 * TLB flushing for 64-bit has-MMU CPUs
90 #include <linux/percpu.h>
93 #define PPC64_TLB_BATCH_NR 192
95 struct ppc64_tlb_batch {
99 real_pte_t pte[PPC64_TLB_BATCH_NR];
100 unsigned long vaddr[PPC64_TLB_BATCH_NR];
104 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
106 extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
108 extern void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
109 pte_t *ptep, unsigned long pte, int huge);
111 #define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
113 static inline void arch_enter_lazy_mmu_mode(void)
115 struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
120 static inline void arch_leave_lazy_mmu_mode(void)
122 struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
125 __flush_tlb_pending(batch);
129 #define arch_flush_lazy_mmu_mode() do {} while (0)
132 extern void flush_hash_page(unsigned long va, real_pte_t pte, int psize,
133 int ssize, int local);
134 extern void flush_hash_range(unsigned long number, int local);
137 static inline void flush_tlb_mm(struct mm_struct *mm)
141 static inline void flush_tlb_page(struct vm_area_struct *vma,
142 unsigned long vmaddr)
146 static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
147 unsigned long vmaddr)
151 static inline void flush_tlb_range(struct vm_area_struct *vma,
152 unsigned long start, unsigned long end)
156 static inline void flush_tlb_kernel_range(unsigned long start,
161 /* Private function for use by PCI IO mapping code */
162 extern void __flush_hash_table_range(struct mm_struct *mm, unsigned long start,
168 #endif /*__KERNEL__ */
169 #endif /* _ASM_POWERPC_TLBFLUSH_H */