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diff --git a/arch/arm64/crypto/sm4-ce-ccm-core.S b/arch/arm64/crypto/sm4-ce-ccm-core.S
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * SM4-CCM AEAD Algorithm using ARMv8 Crypto Extensions
+ * as specified in rfc8998
+ * https://datatracker.ietf.org/doc/html/rfc8998
+ *
+ * Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include "sm4-ce-asm.h"
+
+.arch armv8-a+crypto
+
+.irp b, 0, 1, 8, 9, 10, 11, 12, 13, 14, 15, 16, 24, 25, 26, 27, 28, 29, 30, 31
+ .set .Lv\b\().4s, \b
+.endr
+
+.macro sm4e, vd, vn
+ .inst 0xcec08400 | (.L\vn << 5) | .L\vd
+.endm
+
+/* Register macros */
+
+#define RMAC v16
+
+/* Helper macros. */
+
+#define inc_le128(vctr) \
+ mov vctr.d[1], x8; \
+ mov vctr.d[0], x7; \
+ adds x8, x8, #1; \
+ rev64 vctr.16b, vctr.16b; \
+ adc x7, x7, xzr;
+
+
+.align 3
+SYM_FUNC_START(sm4_ce_cbcmac_update)
+ /* input:
+ * x0: round key array, CTX
+ * x1: mac
+ * x2: src
+ * w3: nblocks
+ */
+ SM4_PREPARE(x0)
+
+ ld1 {RMAC.16b}, [x1]
+
+.Lcbcmac_loop_4x:
+ cmp w3, #4
+ blt .Lcbcmac_loop_1x
+
+ sub w3, w3, #4
+
+ ld1 {v0.16b-v3.16b}, [x2], #64
+
+ SM4_CRYPT_BLK(RMAC)
+ eor RMAC.16b, RMAC.16b, v0.16b
+ SM4_CRYPT_BLK(RMAC)
+ eor RMAC.16b, RMAC.16b, v1.16b
+ SM4_CRYPT_BLK(RMAC)
+ eor RMAC.16b, RMAC.16b, v2.16b
+ SM4_CRYPT_BLK(RMAC)
+ eor RMAC.16b, RMAC.16b, v3.16b
+
+ cbz w3, .Lcbcmac_end
+ b .Lcbcmac_loop_4x
+
+.Lcbcmac_loop_1x:
+ sub w3, w3, #1
+
+ ld1 {v0.16b}, [x2], #16
+
+ SM4_CRYPT_BLK(RMAC)
+ eor RMAC.16b, RMAC.16b, v0.16b
+
+ cbnz w3, .Lcbcmac_loop_1x
+
+.Lcbcmac_end:
+ st1 {RMAC.16b}, [x1]
+ ret
+SYM_FUNC_END(sm4_ce_cbcmac_update)
+
+.align 3
+SYM_FUNC_START(sm4_ce_ccm_final)
+ /* input:
+ * x0: round key array, CTX
+ * x1: ctr0 (big endian, 128 bit)
+ * x2: mac
+ */
+ SM4_PREPARE(x0)
+
+ ld1 {RMAC.16b}, [x2]
+ ld1 {v0.16b}, [x1]
+
+ SM4_CRYPT_BLK2(RMAC, v0)
+
+ /* en-/decrypt the mac with ctr0 */
+ eor RMAC.16b, RMAC.16b, v0.16b
+ st1 {RMAC.16b}, [x2]
+
+ ret
+SYM_FUNC_END(sm4_ce_ccm_final)
+
+.align 3
+SYM_FUNC_START(sm4_ce_ccm_enc)
+ /* input:
+ * x0: round key array, CTX
+ * x1: dst
+ * x2: src
+ * x3: ctr (big endian, 128 bit)
+ * w4: nbytes
+ * x5: mac
+ */
+ SM4_PREPARE(x0)
+
+ ldp x7, x8, [x3]
+ rev x7, x7
+ rev x8, x8
+
+ ld1 {RMAC.16b}, [x5]
+
+.Lccm_enc_loop_4x:
+ cmp w4, #(4 * 16)
+ blt .Lccm_enc_loop_1x
+
+ sub w4, w4, #(4 * 16)
+
+ /* construct CTRs */
+ inc_le128(v8) /* +0 */
+ inc_le128(v9) /* +1 */
+ inc_le128(v10) /* +2 */
+ inc_le128(v11) /* +3 */
+
+ ld1 {v0.16b-v3.16b}, [x2], #64
+
+ SM4_CRYPT_BLK2(v8, RMAC)
+ eor v8.16b, v8.16b, v0.16b
+ eor RMAC.16b, RMAC.16b, v0.16b
+ SM4_CRYPT_BLK2(v9, RMAC)
+ eor v9.16b, v9.16b, v1.16b
+ eor RMAC.16b, RMAC.16b, v1.16b
+ SM4_CRYPT_BLK2(v10, RMAC)
+ eor v10.16b, v10.16b, v2.16b
+ eor RMAC.16b, RMAC.16b, v2.16b
+ SM4_CRYPT_BLK2(v11, RMAC)
+ eor v11.16b, v11.16b, v3.16b
+ eor RMAC.16b, RMAC.16b, v3.16b
+
+ st1 {v8.16b-v11.16b}, [x1], #64
+
+ cbz w4, .Lccm_enc_end
+ b .Lccm_enc_loop_4x
+
+.Lccm_enc_loop_1x:
+ cmp w4, #16
+ blt .Lccm_enc_tail
+
+ sub w4, w4, #16
+
+ /* construct CTRs */
+ inc_le128(v8)
+
+ ld1 {v0.16b}, [x2], #16
+
+ SM4_CRYPT_BLK2(v8, RMAC)
+ eor v8.16b, v8.16b, v0.16b
+ eor RMAC.16b, RMAC.16b, v0.16b
+
+ st1 {v8.16b}, [x1], #16
+
+ cbz w4, .Lccm_enc_end
+ b .Lccm_enc_loop_1x
+
+.Lccm_enc_tail:
+ /* construct CTRs */
+ inc_le128(v8)
+
+ SM4_CRYPT_BLK2(RMAC, v8)
+
+ /* store new MAC */
+ st1 {RMAC.16b}, [x5]
+
+.Lccm_enc_tail_loop:
+ ldrb w0, [x2], #1 /* get 1 byte from input */
+ umov w9, v8.b[0] /* get top crypted CTR byte */
+ umov w6, RMAC.b[0] /* get top MAC byte */
+
+ eor w9, w9, w0 /* w9 = CTR ^ input */
+ eor w6, w6, w0 /* w6 = MAC ^ input */
+
+ strb w9, [x1], #1 /* store out byte */
+ strb w6, [x5], #1 /* store MAC byte */
+
+ subs w4, w4, #1
+ beq .Lccm_enc_ret
+
+ /* shift out one byte */
+ ext RMAC.16b, RMAC.16b, RMAC.16b, #1
+ ext v8.16b, v8.16b, v8.16b, #1
+
+ b .Lccm_enc_tail_loop
+
+.Lccm_enc_end:
+ /* store new MAC */
+ st1 {RMAC.16b}, [x5]
+
+ /* store new CTR */
+ rev x7, x7
+ rev x8, x8
+ stp x7, x8, [x3]
+
+.Lccm_enc_ret:
+ ret
+SYM_FUNC_END(sm4_ce_ccm_enc)
+
+.align 3
+SYM_FUNC_START(sm4_ce_ccm_dec)
+ /* input:
+ * x0: round key array, CTX
+ * x1: dst
+ * x2: src
+ * x3: ctr (big endian, 128 bit)
+ * w4: nbytes
+ * x5: mac
+ */
+ SM4_PREPARE(x0)
+
+ ldp x7, x8, [x3]
+ rev x7, x7
+ rev x8, x8
+
+ ld1 {RMAC.16b}, [x5]
+
+.Lccm_dec_loop_4x:
+ cmp w4, #(4 * 16)
+ blt .Lccm_dec_loop_1x
+
+ sub w4, w4, #(4 * 16)
+
+ /* construct CTRs */
+ inc_le128(v8) /* +0 */
+ inc_le128(v9) /* +1 */
+ inc_le128(v10) /* +2 */
+ inc_le128(v11) /* +3 */
+
+ ld1 {v0.16b-v3.16b}, [x2], #64
+
+ SM4_CRYPT_BLK2(v8, RMAC)
+ eor v8.16b, v8.16b, v0.16b
+ eor RMAC.16b, RMAC.16b, v8.16b
+ SM4_CRYPT_BLK2(v9, RMAC)
+ eor v9.16b, v9.16b, v1.16b
+ eor RMAC.16b, RMAC.16b, v9.16b
+ SM4_CRYPT_BLK2(v10, RMAC)
+ eor v10.16b, v10.16b, v2.16b
+ eor RMAC.16b, RMAC.16b, v10.16b
+ SM4_CRYPT_BLK2(v11, RMAC)
+ eor v11.16b, v11.16b, v3.16b
+ eor RMAC.16b, RMAC.16b, v11.16b
+
+ st1 {v8.16b-v11.16b}, [x1], #64
+
+ cbz w4, .Lccm_dec_end
+ b .Lccm_dec_loop_4x
+
+.Lccm_dec_loop_1x:
+ cmp w4, #16
+ blt .Lccm_dec_tail
+
+ sub w4, w4, #16
+
+ /* construct CTRs */
+ inc_le128(v8)
+
+ ld1 {v0.16b}, [x2], #16
+
+ SM4_CRYPT_BLK2(v8, RMAC)
+ eor v8.16b, v8.16b, v0.16b
+ eor RMAC.16b, RMAC.16b, v8.16b
+
+ st1 {v8.16b}, [x1], #16
+
+ cbz w4, .Lccm_dec_end
+ b .Lccm_dec_loop_1x
+
+.Lccm_dec_tail:
+ /* construct CTRs */
+ inc_le128(v8)
+
+ SM4_CRYPT_BLK2(RMAC, v8)
+
+ /* store new MAC */
+ st1 {RMAC.16b}, [x5]
+
+.Lccm_dec_tail_loop:
+ ldrb w0, [x2], #1 /* get 1 byte from input */
+ umov w9, v8.b[0] /* get top crypted CTR byte */
+ umov w6, RMAC.b[0] /* get top MAC byte */
+
+ eor w9, w9, w0 /* w9 = CTR ^ input */
+ eor w6, w6, w9 /* w6 = MAC ^ output */
+
+ strb w9, [x1], #1 /* store out byte */
+ strb w6, [x5], #1 /* store MAC byte */
+
+ subs w4, w4, #1
+ beq .Lccm_dec_ret
+
+ /* shift out one byte */
+ ext RMAC.16b, RMAC.16b, RMAC.16b, #1
+ ext v8.16b, v8.16b, v8.16b, #1
+
+ b .Lccm_dec_tail_loop
+
+.Lccm_dec_end:
+ /* store new MAC */
+ st1 {RMAC.16b}, [x5]
+
+ /* store new CTR */
+ rev x7, x7
+ rev x8, x8
+ stp x7, x8, [x3]
+
+.Lccm_dec_ret:
+ ret
+SYM_FUNC_END(sm4_ce_ccm_dec)
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-01 11:19:21 +0300