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82 lines
2.0 KiB
82 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H |
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#define _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H |
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#define MMU_NO_CONTEXT (0) |
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/* |
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* TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx |
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*/ |
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void hash__flush_tlb_mm(struct mm_struct *mm); |
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void hash__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); |
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void hash__flush_range(struct mm_struct *mm, unsigned long start, unsigned long end); |
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#ifdef CONFIG_SMP |
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void _tlbie(unsigned long address); |
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#else |
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static inline void _tlbie(unsigned long address) |
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{ |
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asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); |
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} |
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#endif |
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void _tlbia(void); |
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/* |
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* Called at the end of a mmu_gather operation to make sure the |
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* TLB flush is completely done. |
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*/ |
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static inline void tlb_flush(struct mmu_gather *tlb) |
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{ |
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/* 603 needs to flush the whole TLB here since it doesn't use a hash table. */ |
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if (!mmu_has_feature(MMU_FTR_HPTE_TABLE)) |
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_tlbia(); |
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} |
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static inline void flush_range(struct mm_struct *mm, unsigned long start, unsigned long end) |
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{ |
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start &= PAGE_MASK; |
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if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) |
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hash__flush_range(mm, start, end); |
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else if (end - start <= PAGE_SIZE) |
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_tlbie(start); |
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else |
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_tlbia(); |
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} |
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static inline void flush_tlb_mm(struct mm_struct *mm) |
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{ |
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if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) |
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hash__flush_tlb_mm(mm); |
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else |
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_tlbia(); |
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} |
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static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) |
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{ |
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if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) |
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hash__flush_tlb_page(vma, vmaddr); |
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else |
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_tlbie(vmaddr); |
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} |
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static inline void |
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flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) |
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{ |
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flush_range(vma->vm_mm, start, end); |
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} |
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static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) |
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{ |
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flush_range(&init_mm, start, end); |
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} |
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static inline void local_flush_tlb_page(struct vm_area_struct *vma, |
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unsigned long vmaddr) |
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{ |
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flush_tlb_page(vma, vmaddr); |
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} |
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static inline void local_flush_tlb_mm(struct mm_struct *mm) |
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{ |
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flush_tlb_mm(mm); |
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} |
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#endif /* _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H */
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