1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H 3 #define _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H 4 5 #define MMU_NO_CONTEXT (0) 6 /* 7 * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx 8 */ 9 void hash__flush_tlb_mm(struct mm_struct *mm); 10 void hash__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); 11 void hash__flush_range(struct mm_struct *mm, unsigned long start, unsigned long end); 12 13 #ifdef CONFIG_SMP 14 void _tlbie(unsigned long address); 15 #else 16 static inline void _tlbie(unsigned long address) 17 { 18 asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); 19 } 20 #endif 21 void _tlbia(void); 22 23 /* 24 * Called at the end of a mmu_gather operation to make sure the 25 * TLB flush is completely done. 26 */ 27 static inline void tlb_flush(struct mmu_gather *tlb) 28 { 29 /* 603 needs to flush the whole TLB here since it doesn't use a hash table. */ 30 if (!mmu_has_feature(MMU_FTR_HPTE_TABLE)) 31 _tlbia(); 32 } 33 34 static inline void flush_range(struct mm_struct *mm, unsigned long start, unsigned long end) 35 { 36 start &= PAGE_MASK; 37 if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) 38 hash__flush_range(mm, start, end); 39 else if (end - start <= PAGE_SIZE) 40 _tlbie(start); 41 else 42 _tlbia(); 43 } 44 45 static inline void flush_tlb_mm(struct mm_struct *mm) 46 { 47 if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) 48 hash__flush_tlb_mm(mm); 49 else 50 _tlbia(); 51 } 52 53 static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) 54 { 55 if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) 56 hash__flush_tlb_page(vma, vmaddr); 57 else 58 _tlbie(vmaddr); 59 } 60 61 static inline void 62 flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) 63 { 64 flush_range(vma->vm_mm, start, end); 65 } 66 67 static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) 68 { 69 flush_range(&init_mm, start, end); 70 } 71 72 static inline void local_flush_tlb_page(struct vm_area_struct *vma, 73 unsigned long vmaddr) 74 { 75 flush_tlb_page(vma, vmaddr); 76 } 77 static inline void local_flush_tlb_mm(struct mm_struct *mm) 78 { 79 flush_tlb_mm(mm); 80 } 81 82 #endif /* _ASM_POWERPC_TLBFLUSH_H */ 83