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- /*
- * Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com>
- * Copyright (C) 2012 Regents of the University of California
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
- #ifndef _ASM_RISCV_TLBFLUSH_H
- #define _ASM_RISCV_TLBFLUSH_H
- #include <linux/mm_types.h>
- /*
- * Flush entire local TLB. 'sfence.vma' implicitly fences with the instruction
- * cache as well, so a 'fence.i' is not necessary.
- */
- static inline void local_flush_tlb_all(void)
- {
- __asm__ __volatile__ ("sfence.vma" : : : "memory");
- }
- /* Flush one page from local TLB */
- static inline void local_flush_tlb_page(unsigned long addr)
- {
- __asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory");
- }
- #ifndef CONFIG_SMP
- #define flush_tlb_all() local_flush_tlb_all()
- #define flush_tlb_page(vma, addr) local_flush_tlb_page(addr)
- static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
- {
- local_flush_tlb_all();
- }
- #define flush_tlb_mm(mm) flush_tlb_all()
- #else /* CONFIG_SMP */
- #include <asm/sbi.h>
- #define flush_tlb_all() sbi_remote_sfence_vma(NULL, 0, -1)
- #define flush_tlb_page(vma, addr) flush_tlb_range(vma, addr, 0)
- #define flush_tlb_range(vma, start, end) \
- sbi_remote_sfence_vma(mm_cpumask((vma)->vm_mm)->bits, \
- start, (end) - (start))
- #define flush_tlb_mm(mm) \
- sbi_remote_sfence_vma(mm_cpumask(mm)->bits, 0, -1)
- #endif /* CONFIG_SMP */
- /* Flush a range of kernel pages */
- static inline void flush_tlb_kernel_range(unsigned long start,
- unsigned long end)
- {
- flush_tlb_all();
- }
- #endif /* _ASM_RISCV_TLBFLUSH_H */
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