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// SPDX-License-Identifier: GPL-2.0
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/sched.h>
#include <asm/sbi.h>
void flush_tlb_all(void)
{
sbi_remote_sfence_vma(NULL, 0, -1);
}
static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start,
unsigned long size, unsigned long stride)
{
struct cpumask *cmask = mm_cpumask(mm);
struct cpumask hmask;
unsigned int cpuid;
if (cpumask_empty(cmask))
return;
cpuid = get_cpu();
if (cpumask_any_but(cmask, cpuid) >= nr_cpu_ids) {
/* local cpu is the only cpu present in cpumask */
if (size <= stride)
local_flush_tlb_page(start);
else
local_flush_tlb_all();
} else {
riscv_cpuid_to_hartid_mask(cmask, &hmask);
sbi_remote_sfence_vma(cpumask_bits(&hmask), start, size);
}
put_cpu();
}
void flush_tlb_mm(struct mm_struct *mm)
{
__sbi_tlb_flush_range(mm, 0, -1, PAGE_SIZE);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
{
__sbi_tlb_flush_range(vma->vm_mm, addr, PAGE_SIZE, PAGE_SIZE);
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(vma->vm_mm, start, end - start, PAGE_SIZE);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(vma->vm_mm, start, end - start, PMD_SIZE);
}
#endif
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