diff options
Diffstat (limited to 'arch/x86/lib/crc-pclmul-consts.h')
| -rw-r--r-- | arch/x86/lib/crc-pclmul-consts.h | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/arch/x86/lib/crc-pclmul-consts.h b/arch/x86/lib/crc-pclmul-consts.h index 34fdcb0446b0..089954988f97 100644 --- a/arch/x86/lib/crc-pclmul-consts.h +++ b/arch/x86/lib/crc-pclmul-consts.h @@ -2,12 +2,58 @@ /* * CRC constants generated by: * - * ./scripts/gen-crc-consts.py x86_pclmul crc32_lsb_0xedb88320 + * ./scripts/gen-crc-consts.py x86_pclmul crc16_msb_0x8bb7,crc32_lsb_0xedb88320 * * Do not edit manually. */ /* + * CRC folding constants generated for most-significant-bit-first CRC-16 using + * G(x) = x^16 + x^15 + x^11 + x^9 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + x^0 + */ +static const struct { + u8 bswap_mask[16]; + u64 fold_across_2048_bits_consts[2]; + u64 fold_across_1024_bits_consts[2]; + u64 fold_across_512_bits_consts[2]; + u64 fold_across_256_bits_consts[2]; + u64 fold_across_128_bits_consts[2]; + u8 shuf_table[48]; + u64 barrett_reduction_consts[2]; +} crc16_msb_0x8bb7_consts ____cacheline_aligned __maybe_unused = { + .bswap_mask = {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}, + .fold_across_2048_bits_consts = { + 0xdccf000000000000, /* LO64_TERMS: (x^2000 mod G) * x^48 */ + 0x4b0b000000000000, /* HI64_TERMS: (x^2064 mod G) * x^48 */ + }, + .fold_across_1024_bits_consts = { + 0x9d9d000000000000, /* LO64_TERMS: (x^976 mod G) * x^48 */ + 0x7cf5000000000000, /* HI64_TERMS: (x^1040 mod G) * x^48 */ + }, + .fold_across_512_bits_consts = { + 0x044c000000000000, /* LO64_TERMS: (x^464 mod G) * x^48 */ + 0xe658000000000000, /* HI64_TERMS: (x^528 mod G) * x^48 */ + }, + .fold_across_256_bits_consts = { + 0x6ee3000000000000, /* LO64_TERMS: (x^208 mod G) * x^48 */ + 0xe7b5000000000000, /* HI64_TERMS: (x^272 mod G) * x^48 */ + }, + .fold_across_128_bits_consts = { + 0x2d56000000000000, /* LO64_TERMS: (x^80 mod G) * x^48 */ + 0x06df000000000000, /* HI64_TERMS: (x^144 mod G) * x^48 */ + }, + .shuf_table = { + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + }, + .barrett_reduction_consts = { + 0x8bb7000000000000, /* LO64_TERMS: (G - x^16) * x^48 */ + 0xf65a57f81d33a48a, /* HI64_TERMS: (floor(x^79 / G) * x) - x^64 */ + }, +}; + +/* * CRC folding constants generated for least-significant-bit-first CRC-32 using * G(x) = x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + * x^5 + x^4 + x^2 + x^1 + x^0 |