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