1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com>
4 * Copyright (C) 2012 Regents of the University of California
7 #ifndef _ASM_RISCV_TLBFLUSH_H
8 #define _ASM_RISCV_TLBFLUSH_H
10 #include <linux/mm_types.h>
12 #include <asm/errata_list.h>
15 static inline void local_flush_tlb_all(void)
17 __asm__ __volatile__ ("sfence.vma" : : : "memory");
20 /* Flush one page from local TLB */
21 static inline void local_flush_tlb_page(unsigned long addr)
23 ALT_FLUSH_TLB_PAGE(__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory"));
26 static inline void local_flush_tlb_all_asid(unsigned long asid)
28 __asm__ __volatile__ ("sfence.vma x0, %0"
34 static inline void local_flush_tlb_page_asid(unsigned long addr,
37 __asm__ __volatile__ ("sfence.vma %0, %1"
39 : "r" (addr), "r" (asid)
43 #else /* CONFIG_MMU */
44 #define local_flush_tlb_all() do { } while (0)
45 #define local_flush_tlb_page(addr) do { } while (0)
46 #endif /* CONFIG_MMU */
48 #if defined(CONFIG_SMP) && defined(CONFIG_MMU)
49 void flush_tlb_all(void);
50 void flush_tlb_mm(struct mm_struct *mm);
51 void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
52 void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
54 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
55 #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
56 void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
59 #else /* CONFIG_SMP && CONFIG_MMU */
61 #define flush_tlb_all() local_flush_tlb_all()
62 #define flush_tlb_page(vma, addr) local_flush_tlb_page(addr)
64 static inline void flush_tlb_range(struct vm_area_struct *vma,
65 unsigned long start, unsigned long end)
67 local_flush_tlb_all();
70 #define flush_tlb_mm(mm) flush_tlb_all()
71 #endif /* !CONFIG_SMP || !CONFIG_MMU */
73 /* Flush a range of kernel pages */
74 static inline void flush_tlb_kernel_range(unsigned long start,
80 #endif /* _ASM_RISCV_TLBFLUSH_H */