LXR linux/arch/csky/mm/syscache.c

   1// SPDX-License-Identifier: GPL-2.0
   2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4#include <linux/syscalls.h>
   5#include <asm/page.h>
   6#include <asm/cacheflush.h>
   7#include <asm/cachectl.h>
   8
   9SYSCALL_DEFINE3(cacheflush,
  10                void __user *, addr,
  11                unsigned long, bytes,
  12                int, cache)
  13{
  14        switch (cache) {
  15        case ICACHE:
  16        case BCACHE:
  17                flush_icache_mm_range(current->mm,
  18                                (unsigned long)addr,
  19                                (unsigned long)addr + bytes);
  20        case DCACHE:
  21                dcache_wb_range((unsigned long)addr,
  22                                (unsigned long)addr + bytes);
  23                break;
  24        default:
  25                return -EINVAL;
  26        }
  27
  28        return 0;
  29}
  30