92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
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/* 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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#include <linux/build_bug.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_page_psize(struct mm_struct *mm,
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unsigned long vmaddr, int psize)
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{
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BUILD_BUG();
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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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