73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com>
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_TLBFLUSH_H
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#define _ASM_RISCV_TLBFLUSH_H
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#include <linux/mm_types.h>
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#include <asm/smp.h>
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#include <asm/errata_list.h>
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#define FLUSH_TLB_MAX_SIZE ((unsigned long)-1)
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#define FLUSH_TLB_NO_ASID ((unsigned long)-1)
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#ifdef CONFIG_MMU
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static inline void local_flush_tlb_all(void)
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{
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__asm__ __volatile__ ("sfence.vma" : : : "memory");
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}
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static inline void local_flush_tlb_all_asid(unsigned long asid)
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{
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if (asid != FLUSH_TLB_NO_ASID)
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ALT_SFENCE_VMA_ASID(asid);
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else
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local_flush_tlb_all();
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}
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/* Flush one page from local TLB */
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static inline void local_flush_tlb_page(unsigned long addr)
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{
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ALT_SFENCE_VMA_ADDR(addr);
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}
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static inline void local_flush_tlb_page_asid(unsigned long addr,
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unsigned long asid)
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{
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if (asid != FLUSH_TLB_NO_ASID)
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ALT_SFENCE_VMA_ADDR_ASID(addr, asid);
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else
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local_flush_tlb_page(addr);
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}
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void flush_tlb_all(void);
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void flush_tlb_mm(struct mm_struct *mm);
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void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
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unsigned long end, unsigned int page_size);
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void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
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void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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void local_flush_tlb_kernel_range(unsigned long start, unsigned long end);
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#ifdef CONFIG_TRANSPARENT_HUGEPAGE
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#define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
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void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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#endif
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bool arch_tlbbatch_should_defer(struct mm_struct *mm);
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void arch_tlbbatch_add_pending(struct arch_tlbflush_unmap_batch *batch,
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struct mm_struct *mm,
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unsigned long uaddr);
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void arch_flush_tlb_batched_pending(struct mm_struct *mm);
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void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch);
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extern unsigned long tlb_flush_all_threshold;
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#else /* CONFIG_MMU */
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#define local_flush_tlb_all() do { } while (0)
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#endif /* CONFIG_MMU */
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#endif /* _ASM_RISCV_TLBFLUSH_H */
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