1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2015 Cavium, Inc
5 #ifndef _RTE_CRC_ARM64_H_
6 #define _RTE_CRC_ARM64_H_
9 crc32c_arm64_u8(uint8_t data, uint32_t init_val)
12 "crc32cb %w[crc], %w[crc], %w[value]"
13 : [crc] "+r" (init_val)
14 : [value] "r" (data));
18 static inline uint32_t
19 crc32c_arm64_u16(uint16_t data, uint32_t init_val)
22 "crc32ch %w[crc], %w[crc], %w[value]"
23 : [crc] "+r" (init_val)
24 : [value] "r" (data));
28 static inline uint32_t
29 crc32c_arm64_u32(uint32_t data, uint32_t init_val)
32 "crc32cw %w[crc], %w[crc], %w[value]"
33 : [crc] "+r" (init_val)
34 : [value] "r" (data));
38 static inline uint32_t
39 crc32c_arm64_u64(uint64_t data, uint32_t init_val)
42 "crc32cx %w[crc], %w[crc], %x[value]"
43 : [crc] "+r" (init_val)
44 : [value] "r" (data));
49 * Use single crc32 instruction to perform a hash on a byte value.
50 * Fall back to software crc32 implementation in case ARM CRC is
53 static inline uint32_t
54 rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
56 if (likely(crc32_alg & CRC32_ARM64))
57 return crc32c_arm64_u8(data, init_val);
59 return crc32c_1byte(data, init_val);
63 * Use single crc32 instruction to perform a hash on a 2 bytes value.
64 * Fall back to software crc32 implementation in case ARM CRC is
67 static inline uint32_t
68 rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
70 if (likely(crc32_alg & CRC32_ARM64))
71 return crc32c_arm64_u16(data, init_val);
73 return crc32c_2bytes(data, init_val);
77 * Use single crc32 instruction to perform a hash on a 4 byte value.
78 * Fall back to software crc32 implementation in case ARM CRC is
81 static inline uint32_t
82 rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
84 if (likely(crc32_alg & CRC32_ARM64))
85 return crc32c_arm64_u32(data, init_val);
87 return crc32c_1word(data, init_val);
91 * Use single crc32 instruction to perform a hash on a 8 byte value.
92 * Fall back to software crc32 implementation in case ARM CRC is
95 static inline uint32_t
96 rte_hash_crc_8byte(uint64_t data, uint32_t init_val)
98 if (likely(crc32_alg & CRC32_ARM64))
99 return crc32c_arm64_u64(data, init_val);
101 return crc32c_2words(data, init_val);
104 #endif /* _RTE_CRC_ARM64_H_ */