0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
76 lines
1.9 KiB
C
76 lines
1.9 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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#ifdef CONFIG_MMU
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static inline void local_flush_tlb_all(void)
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{
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#ifdef CONFIG_NO_SFENCE_VMA
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csr_write(CSR_SMCIR, 1 << 26);
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#else
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__asm__ __volatile__ ("sfence.vma" : : : "memory");
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#endif
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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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#ifdef CONFIG_NO_SFENCE_VMA
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csr_write(CSR_SMCIR, 1 << 26);
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#else
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__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory");
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#endif
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}
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#else /* CONFIG_MMU */
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#define local_flush_tlb_all() do { } while (0)
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#define local_flush_tlb_page(addr) do { } while (0)
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#endif /* CONFIG_MMU */
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#if defined(CONFIG_SMP) && defined(CONFIG_MMU)
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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_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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#else /* CONFIG_SMP && CONFIG_MMU */
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#define flush_tlb_all() local_flush_tlb_all()
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#define flush_tlb_page(vma, addr) local_flush_tlb_page(addr)
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static inline void flush_tlb_range(struct vm_area_struct *vma,
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unsigned long start, unsigned long end)
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{
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local_flush_tlb_all();
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}
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#define flush_tlb_mm(mm) flush_tlb_all()
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#endif /* !CONFIG_SMP || !CONFIG_MMU */
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/* Flush a range of kernel pages */
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static inline void flush_tlb_kernel_range(unsigned long start,
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unsigned long end)
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{
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#ifdef CONFIG_NO_SFENCE_VMA
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csr_write(CSR_SMCIR, 1 << 26);
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#else
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start &= PAGE_MASK;
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end += PAGE_SIZE - 1;
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end &= PAGE_MASK;
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while (start < end) {
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__asm__ __volatile__ ("sfence.vma %0" : : "r" (start) : "memory");
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start += PAGE_SIZE;
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}
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#endif
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}
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#endif /* _ASM_RISCV_TLBFLUSH_H */
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