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>
14 #define FLUSH_TLB_MAX_SIZE ((unsigned long)-1)
15 #define FLUSH_TLB_NO_ASID ((unsigned long)-1)
18 extern unsigned long asid_mask;
20 static inline void local_flush_tlb_all(void)
22 __asm__ __volatile__ ("sfence.vma" : : : "memory");
25 /* Flush one page from local TLB */
26 static inline void local_flush_tlb_page(unsigned long addr)
28 ALT_FLUSH_TLB_PAGE(__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory"));
30 #else /* CONFIG_MMU */
31 #define local_flush_tlb_all() do { } while (0)
32 #define local_flush_tlb_page(addr) do { } while (0)
33 #endif /* CONFIG_MMU */
35 #if defined(CONFIG_SMP) && defined(CONFIG_MMU)
36 void flush_tlb_all(void);
37 void flush_tlb_mm(struct mm_struct *mm);
38 void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
39 unsigned long end, unsigned int page_size);
40 void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
41 void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
43 void flush_tlb_kernel_range(unsigned long start, unsigned long end);
44 void local_flush_tlb_kernel_range(unsigned long start, unsigned long end);
45 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
46 #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
47 void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
50 #else /* CONFIG_SMP && CONFIG_MMU */
52 #define flush_tlb_all() local_flush_tlb_all()
53 #define flush_tlb_page(vma, addr) local_flush_tlb_page(addr)
55 static inline void flush_tlb_range(struct vm_area_struct *vma,
56 unsigned long start, unsigned long end)
58 local_flush_tlb_all();
61 /* Flush a range of kernel pages */
62 static inline void flush_tlb_kernel_range(unsigned long start,
65 local_flush_tlb_all();
68 #define flush_tlb_mm(mm) flush_tlb_all()
69 #define flush_tlb_mm_range(mm, start, end, page_size) flush_tlb_all()
70 #define local_flush_tlb_kernel_range(start, end) flush_tlb_all()
71 #endif /* !CONFIG_SMP || !CONFIG_MMU */
73 #endif /* _ASM_RISCV_TLBFLUSH_H */