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1932fbe3 GH |
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> | |
44e92e03 | 9 | #include <asm/fpu.h> |
ed32949e | 10 | #include <asm/fp_udfiex_crtl.h> |
1932fbe3 GH |
11 | |
12 | SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, | |
13 | unsigned long, prot, unsigned long, flags, | |
14 | unsigned long, fd, unsigned long, pgoff) | |
15 | { | |
16 | if (pgoff & (~PAGE_MASK >> 12)) | |
17 | return -EINVAL; | |
18 | ||
19 | return sys_mmap_pgoff(addr, len, prot, flags, fd, | |
20 | pgoff >> (PAGE_SHIFT - 12)); | |
21 | } | |
22 | ||
23 | SYSCALL_DEFINE4(fadvise64_64_wrapper,int, fd, int, advice, loff_t, offset, | |
24 | loff_t, len) | |
25 | { | |
26 | return sys_fadvise64_64(fd, offset, len, advice); | |
27 | } | |
28 | ||
29 | SYSCALL_DEFINE3(cacheflush, unsigned int, start, unsigned int, end, int, cache) | |
30 | { | |
31 | struct vm_area_struct *vma; | |
32 | bool flushi = true, wbd = true; | |
33 | ||
34 | vma = find_vma(current->mm, start); | |
35 | if (!vma) | |
36 | return -EFAULT; | |
37 | switch (cache) { | |
38 | case ICACHE: | |
39 | wbd = false; | |
40 | break; | |
41 | case DCACHE: | |
42 | flushi = false; | |
43 | break; | |
44 | case BCACHE: | |
45 | break; | |
46 | default: | |
47 | return -EINVAL; | |
48 | } | |
49 | cpu_cache_wbinval_range_check(vma, start, end, flushi, wbd); | |
50 | ||
51 | return 0; | |
52 | } | |
44e92e03 | 53 | |
ed32949e | 54 | SYSCALL_DEFINE2(fp_udfiex_crtl, unsigned int, cmd, unsigned int, act) |
44e92e03 VC |
55 | { |
56 | #if IS_ENABLED(CONFIG_SUPPORT_DENORMAL_ARITHMETIC) | |
ed32949e | 57 | int old_udf_iex; |
44e92e03 VC |
58 | |
59 | if (!used_math()) { | |
60 | load_fpu(&init_fpuregs); | |
ed32949e | 61 | current->thread.fpu.UDF_IEX_trap = init_fpuregs.UDF_IEX_trap; |
44e92e03 VC |
62 | set_used_math(); |
63 | } | |
64 | ||
ed32949e VC |
65 | old_udf_iex = current->thread.fpu.UDF_IEX_trap; |
66 | act &= (FPCSR_mskUDFE | FPCSR_mskIEXE); | |
67 | ||
68 | switch (cmd) { | |
69 | case DISABLE_UDF_IEX_TRAP: | |
70 | current->thread.fpu.UDF_IEX_trap &= ~act; | |
44e92e03 | 71 | break; |
ed32949e VC |
72 | case ENABLE_UDF_IEX_TRAP: |
73 | current->thread.fpu.UDF_IEX_trap |= act; | |
44e92e03 | 74 | break; |
ed32949e | 75 | case GET_UDF_IEX_TRAP: |
44e92e03 VC |
76 | break; |
77 | default: | |
78 | return -EINVAL; | |
79 | } | |
ed32949e | 80 | return old_udf_iex; |
44e92e03 VC |
81 | #else |
82 | return -ENOTSUPP; | |
83 | #endif | |
84 | } |