1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2005-2017 Andes Technology Corporation
3
4 #include <linux/syscalls.h>
5 #include <linux/uaccess.h>
6
7 #include <asm/cachectl.h>
8 #include <asm/proc-fns.h>
9
SYSCALL_DEFINE6(mmap2,unsigned long,addr,unsigned long,len,unsigned long,prot,unsigned long,flags,unsigned long,fd,unsigned long,pgoff)10 SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
11 unsigned long, prot, unsigned long, flags,
12 unsigned long, fd, unsigned long, pgoff)
13 {
14 if (pgoff & (~PAGE_MASK >> 12))
15 return -EINVAL;
16
17 return sys_mmap_pgoff(addr, len, prot, flags, fd,
18 pgoff >> (PAGE_SHIFT - 12));
19 }
20
SYSCALL_DEFINE4(fadvise64_64_wrapper,int,fd,int,advice,loff_t,offset,loff_t,len)21 SYSCALL_DEFINE4(fadvise64_64_wrapper,int, fd, int, advice, loff_t, offset,
22 loff_t, len)
23 {
24 return sys_fadvise64_64(fd, offset, len, advice);
25 }
26
SYSCALL_DEFINE3(cacheflush,unsigned int,start,unsigned int,end,int,cache)27 SYSCALL_DEFINE3(cacheflush, unsigned int, start, unsigned int, end, int, cache)
28 {
29 struct vm_area_struct *vma;
30 bool flushi = true, wbd = true;
31
32 vma = find_vma(current->mm, start);
33 if (!vma)
34 return -EFAULT;
35 switch (cache) {
36 case ICACHE:
37 wbd = false;
38 break;
39 case DCACHE:
40 flushi = false;
41 break;
42 case BCACHE:
43 break;
44 default:
45 return -EINVAL;
46 }
47 cpu_cache_wbinval_range_check(vma, start, end, flushi, wbd);
48
49 return 0;
50 }
51