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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#include <linux/syscalls.h>
#include <asm/page.h>
#include <asm/cacheflush.h>
#include <asm/cachectl.h>
SYSCALL_DEFINE3(cacheflush,
void __user *, addr,
unsigned long, bytes,
int, cache)
{
switch (cache) {
case BCACHE:
case DCACHE:
dcache_wb_range((unsigned long)addr,
(unsigned long)addr + bytes);
if (cache != BCACHE)
break;
fallthrough;
case ICACHE:
flush_icache_mm_range(current->mm,
(unsigned long)addr,
(unsigned long)addr + bytes);
break;
default:
return -EINVAL;
}
return 0;
}
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