xref: /linux/arch/x86/lib/crc-pclmul-consts.h (revision 4f9786035f9e519db41375818e1d0b5f20da2f10)

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * CRC constants generated by:
 *
 *	./scripts/gen-crc-consts.py x86_pclmul crc16_msb_0x8bb7,crc32_lsb_0xedb88320,crc64_msb_0x42f0e1eba9ea3693,crc64_lsb_0x9a6c9329ac4bc9b5
 *
 * 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
 */
static const struct {
	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];
} crc32_lsb_0xedb88320_consts ____cacheline_aligned __maybe_unused = {
	.fold_across_2048_bits_consts = {
		0x00000000ce3371cb,	/* HI64_TERMS: (x^2079 mod G) * x^32 */
		0x00000000e95c1271,	/* LO64_TERMS: (x^2015 mod G) * x^32 */
	},
	.fold_across_1024_bits_consts = {
		0x0000000033fff533,	/* HI64_TERMS: (x^1055 mod G) * x^32 */
		0x00000000910eeec1,	/* LO64_TERMS: (x^991 mod G) * x^32 */
	},
	.fold_across_512_bits_consts = {
		0x000000008f352d95,	/* HI64_TERMS: (x^543 mod G) * x^32 */
		0x000000001d9513d7,	/* LO64_TERMS: (x^479 mod G) * x^32 */
	},
	.fold_across_256_bits_consts = {
		0x00000000f1da05aa,	/* HI64_TERMS: (x^287 mod G) * x^32 */
		0x0000000081256527,	/* LO64_TERMS: (x^223 mod G) * x^32 */
	},
	.fold_across_128_bits_consts = {
		0x00000000ae689191,	/* HI64_TERMS: (x^159 mod G) * x^32 */
		0x00000000ccaa009e,	/* LO64_TERMS: (x^95 mod G) * x^32 */
	},
	.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 = {
		0xb4e5b025f7011641,	/* HI64_TERMS: floor(x^95 / G) */
		0x00000001db710640,	/* LO64_TERMS: (G - x^32) * x^31 */
	},
};

/*
 * CRC folding constants generated for most-significant-bit-first CRC-64 using
 * G(x) = x^64 + x^62 + x^57 + x^55 + x^54 + x^53 + x^52 + x^47 + x^46 + x^45 +
 *        x^40 + x^39 + x^38 + x^37 + x^35 + x^33 + x^32 + x^31 + x^29 + x^27 +
 *        x^24 + x^23 + x^22 + x^21 + x^19 + x^17 + x^13 + x^12 + x^10 + x^9 +
 *        x^7 + x^4 + 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];
} crc64_msb_0x42f0e1eba9ea3693_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 = {
		0x7f52691a60ddc70d,	/* LO64_TERMS: (x^2048 mod G) * x^0 */
		0x7036b0389f6a0c82,	/* HI64_TERMS: (x^2112 mod G) * x^0 */
	},
	.fold_across_1024_bits_consts = {
		0x05cf79dea9ac37d6,	/* LO64_TERMS: (x^1024 mod G) * x^0 */
		0x001067e571d7d5c2,	/* HI64_TERMS: (x^1088 mod G) * x^0 */
	},
	.fold_across_512_bits_consts = {
		0x5f6843ca540df020,	/* LO64_TERMS: (x^512 mod G) * x^0 */
		0xddf4b6981205b83f,	/* HI64_TERMS: (x^576 mod G) * x^0 */
	},
	.fold_across_256_bits_consts = {
		0x571bee0a227ef92b,	/* LO64_TERMS: (x^256 mod G) * x^0 */
		0x44bef2a201b5200c,	/* HI64_TERMS: (x^320 mod G) * x^0 */
	},
	.fold_across_128_bits_consts = {
		0x05f5c3c7eb52fab6,	/* LO64_TERMS: (x^128 mod G) * x^0 */
		0x4eb938a7d257740e,	/* HI64_TERMS: (x^192 mod G) * x^0 */
	},
	.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 = {
		0x42f0e1eba9ea3693,	/* LO64_TERMS: (G - x^64) * x^0 */
		0x578d29d06cc4f872,	/* HI64_TERMS: (floor(x^127 / G) * x) - x^64 */
	},
};

/*
 * CRC folding constants generated for least-significant-bit-first CRC-64 using
 * G(x) = x^64 + x^63 + x^61 + x^59 + x^58 + x^56 + x^55 + x^52 + x^49 + x^48 +
 *        x^47 + x^46 + x^44 + x^41 + x^37 + x^36 + x^34 + x^32 + x^31 + x^28 +
 *        x^26 + x^23 + x^22 + x^19 + x^16 + x^13 + x^12 + x^10 + x^9 + x^6 +
 *        x^4 + x^3 + x^0
 */
static const struct {
	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];
} crc64_lsb_0x9a6c9329ac4bc9b5_consts ____cacheline_aligned __maybe_unused = {
	.fold_across_2048_bits_consts = {
		0x37ccd3e14069cabc,	/* HI64_TERMS: (x^2111 mod G) * x^0 */
		0xa043808c0f782663,	/* LO64_TERMS: (x^2047 mod G) * x^0 */
	},
	.fold_across_1024_bits_consts = {
		0xa1ca681e733f9c40,	/* HI64_TERMS: (x^1087 mod G) * x^0 */
		0x5f852fb61e8d92dc,	/* LO64_TERMS: (x^1023 mod G) * x^0 */
	},
	.fold_across_512_bits_consts = {
		0x0c32cdb31e18a84a,	/* HI64_TERMS: (x^575 mod G) * x^0 */
		0x62242240ace5045a,	/* LO64_TERMS: (x^511 mod G) * x^0 */
	},
	.fold_across_256_bits_consts = {
		0xb0bc2e589204f500,	/* HI64_TERMS: (x^319 mod G) * x^0 */
		0xe1e0bb9d45d7a44c,	/* LO64_TERMS: (x^255 mod G) * x^0 */
	},
	.fold_across_128_bits_consts = {
		0xeadc41fd2ba3d420,	/* HI64_TERMS: (x^191 mod G) * x^0 */
		0x21e9761e252621ac,	/* LO64_TERMS: (x^127 mod G) * x^0 */
	},
	.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 = {
		0x27ecfa329aef9f77,	/* HI64_TERMS: floor(x^127 / G) */
		0x34d926535897936a,	/* LO64_TERMS: (G - x^64 - x^0) / x */
	},
};