/* * 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 */