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-rw-r--r--arch/arm64/crypto/Kconfig17
-rw-r--r--arch/arm64/crypto/Makefile10
-rw-r--r--arch/arm64/crypto/aes-neonbs-glue.c2
-rw-r--r--arch/arm64/crypto/chacha-neon-glue.c81
-rw-r--r--arch/arm64/crypto/ghash-ce-core.S501
-rw-r--r--arch/arm64/crypto/ghash-ce-glue.c293
-rw-r--r--arch/arm64/crypto/poly1305-armv8.pl913
-rw-r--r--arch/arm64/crypto/poly1305-core.S_shipped835
-rw-r--r--arch/arm64/crypto/poly1305-glue.c237
9 files changed, 2532 insertions, 357 deletions
diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig
index 4922c4451e7c..b8eb0453123d 100644
--- a/arch/arm64/crypto/Kconfig
+++ b/arch/arm64/crypto/Kconfig
@@ -86,7 +86,7 @@ config CRYPTO_AES_ARM64_CE_CCM
config CRYPTO_AES_ARM64_CE_BLK
tristate "AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions"
depends on KERNEL_MODE_NEON
- select CRYPTO_BLKCIPHER
+ select CRYPTO_SKCIPHER
select CRYPTO_AES_ARM64_CE
select CRYPTO_AES_ARM64
select CRYPTO_SIMD
@@ -94,7 +94,7 @@ config CRYPTO_AES_ARM64_CE_BLK
config CRYPTO_AES_ARM64_NEON_BLK
tristate "AES in ECB/CBC/CTR/XTS modes using NEON instructions"
depends on KERNEL_MODE_NEON
- select CRYPTO_BLKCIPHER
+ select CRYPTO_SKCIPHER
select CRYPTO_AES_ARM64
select CRYPTO_LIB_AES
select CRYPTO_SIMD
@@ -102,8 +102,15 @@ config CRYPTO_AES_ARM64_NEON_BLK
config CRYPTO_CHACHA20_NEON
tristate "ChaCha20, XChaCha20, and XChaCha12 stream ciphers using NEON instructions"
depends on KERNEL_MODE_NEON
- select CRYPTO_BLKCIPHER
- select CRYPTO_CHACHA20
+ select CRYPTO_SKCIPHER
+ select CRYPTO_LIB_CHACHA_GENERIC
+ select CRYPTO_ARCH_HAVE_LIB_CHACHA
+
+config CRYPTO_POLY1305_NEON
+ tristate "Poly1305 hash function using scalar or NEON instructions"
+ depends on KERNEL_MODE_NEON
+ select CRYPTO_HASH
+ select CRYPTO_ARCH_HAVE_LIB_POLY1305
config CRYPTO_NHPOLY1305_NEON
tristate "NHPoly1305 hash function using NEON instructions (for Adiantum)"
@@ -113,7 +120,7 @@ config CRYPTO_NHPOLY1305_NEON
config CRYPTO_AES_ARM64_BS
tristate "AES in ECB/CBC/CTR/XTS modes using bit-sliced NEON algorithm"
depends on KERNEL_MODE_NEON
- select CRYPTO_BLKCIPHER
+ select CRYPTO_SKCIPHER
select CRYPTO_AES_ARM64_NEON_BLK
select CRYPTO_AES_ARM64
select CRYPTO_LIB_AES
diff --git a/arch/arm64/crypto/Makefile b/arch/arm64/crypto/Makefile
index 0435f2a0610e..d0901e610df3 100644
--- a/arch/arm64/crypto/Makefile
+++ b/arch/arm64/crypto/Makefile
@@ -50,6 +50,10 @@ sha512-arm64-y := sha512-glue.o sha512-core.o
obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha-neon.o
chacha-neon-y := chacha-neon-core.o chacha-neon-glue.o
+obj-$(CONFIG_CRYPTO_POLY1305_NEON) += poly1305-neon.o
+poly1305-neon-y := poly1305-core.o poly1305-glue.o
+AFLAGS_poly1305-core.o += -Dpoly1305_init=poly1305_init_arm64
+
obj-$(CONFIG_CRYPTO_NHPOLY1305_NEON) += nhpoly1305-neon.o
nhpoly1305-neon-y := nh-neon-core.o nhpoly1305-neon-glue.o
@@ -68,11 +72,15 @@ ifdef REGENERATE_ARM64_CRYPTO
quiet_cmd_perlasm = PERLASM $@
cmd_perlasm = $(PERL) $(<) void $(@)
+$(src)/poly1305-core.S_shipped: $(src)/poly1305-armv8.pl
+ $(call cmd,perlasm)
+
$(src)/sha256-core.S_shipped: $(src)/sha512-armv8.pl
$(call cmd,perlasm)
$(src)/sha512-core.S_shipped: $(src)/sha512-armv8.pl
$(call cmd,perlasm)
+
endif
-clean-files += sha256-core.S sha512-core.S
+clean-files += poly1305-core.S sha256-core.S sha512-core.S
diff --git a/arch/arm64/crypto/aes-neonbs-glue.c b/arch/arm64/crypto/aes-neonbs-glue.c
index ea873b8904c4..e3e27349a9fe 100644
--- a/arch/arm64/crypto/aes-neonbs-glue.c
+++ b/arch/arm64/crypto/aes-neonbs-glue.c
@@ -384,7 +384,7 @@ static int __xts_crypt(struct skcipher_request *req, bool encrypt,
goto xts_tail;
kernel_neon_end();
- skcipher_walk_done(&walk, nbytes);
+ err = skcipher_walk_done(&walk, nbytes);
}
if (err || likely(!tail))
diff --git a/arch/arm64/crypto/chacha-neon-glue.c b/arch/arm64/crypto/chacha-neon-glue.c
index 1495d2b18518..b08029d7bde6 100644
--- a/arch/arm64/crypto/chacha-neon-glue.c
+++ b/arch/arm64/crypto/chacha-neon-glue.c
@@ -1,5 +1,5 @@
/*
- * ARM NEON accelerated ChaCha and XChaCha stream ciphers,
+ * ARM NEON and scalar accelerated ChaCha and XChaCha stream ciphers,
* including ChaCha20 (RFC7539)
*
* Copyright (C) 2016 - 2017 Linaro, Ltd. <ard.biesheuvel@linaro.org>
@@ -20,9 +20,10 @@
*/
#include <crypto/algapi.h>
-#include <crypto/chacha.h>
+#include <crypto/internal/chacha.h>
#include <crypto/internal/simd.h>
#include <crypto/internal/skcipher.h>
+#include <linux/jump_label.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -36,6 +37,8 @@ asmlinkage void chacha_4block_xor_neon(u32 *state, u8 *dst, const u8 *src,
int nrounds, int bytes);
asmlinkage void hchacha_block_neon(const u32 *state, u32 *out, int nrounds);
+static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
+
static void chacha_doneon(u32 *state, u8 *dst, const u8 *src,
int bytes, int nrounds)
{
@@ -59,6 +62,37 @@ static void chacha_doneon(u32 *state, u8 *dst, const u8 *src,
}
}
+void hchacha_block_arch(const u32 *state, u32 *stream, int nrounds)
+{
+ if (!static_branch_likely(&have_neon) || !crypto_simd_usable()) {
+ hchacha_block_generic(state, stream, nrounds);
+ } else {
+ kernel_neon_begin();
+ hchacha_block_neon(state, stream, nrounds);
+ kernel_neon_end();
+ }
+}
+EXPORT_SYMBOL(hchacha_block_arch);
+
+void chacha_init_arch(u32 *state, const u32 *key, const u8 *iv)
+{
+ chacha_init_generic(state, key, iv);
+}
+EXPORT_SYMBOL(chacha_init_arch);
+
+void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src, unsigned int bytes,
+ int nrounds)
+{
+ if (!static_branch_likely(&have_neon) || bytes <= CHACHA_BLOCK_SIZE ||
+ !crypto_simd_usable())
+ return chacha_crypt_generic(state, dst, src, bytes, nrounds);
+
+ kernel_neon_begin();
+ chacha_doneon(state, dst, src, bytes, nrounds);
+ kernel_neon_end();
+}
+EXPORT_SYMBOL(chacha_crypt_arch);
+
static int chacha_neon_stream_xor(struct skcipher_request *req,
const struct chacha_ctx *ctx, const u8 *iv)
{
@@ -68,7 +102,7 @@ static int chacha_neon_stream_xor(struct skcipher_request *req,
err = skcipher_walk_virt(&walk, req, false);
- crypto_chacha_init(state, ctx, iv);
+ chacha_init_generic(state, ctx->key, iv);
while (walk.nbytes > 0) {
unsigned int nbytes = walk.nbytes;
@@ -76,10 +110,17 @@ static int chacha_neon_stream_xor(struct skcipher_request *req,
if (nbytes < walk.total)
nbytes = rounddown(nbytes, walk.stride);
- kernel_neon_begin();
- chacha_doneon(state, walk.dst.virt.addr, walk.src.virt.addr,
- nbytes, ctx->nrounds);
- kernel_neon_end();
+ if (!static_branch_likely(&have_neon) ||
+ !crypto_simd_usable()) {
+ chacha_crypt_generic(state, walk.dst.virt.addr,
+ walk.src.virt.addr, nbytes,
+ ctx->nrounds);
+ } else {
+ kernel_neon_begin();
+ chacha_doneon(state, walk.dst.virt.addr,
+ walk.src.virt.addr, nbytes, ctx->nrounds);
+ kernel_neon_end();
+ }
err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
}
@@ -91,9 +132,6 @@ static int chacha_neon(struct skcipher_request *req)
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm);
- if (req->cryptlen <= CHACHA_BLOCK_SIZE || !crypto_simd_usable())
- return crypto_chacha_crypt(req);
-
return chacha_neon_stream_xor(req, ctx, req->iv);
}
@@ -105,14 +143,8 @@ static int xchacha_neon(struct skcipher_request *req)
u32 state[16];
u8 real_iv[16];
- if (req->cryptlen <= CHACHA_BLOCK_SIZE || !crypto_simd_usable())
- return crypto_xchacha_crypt(req);
-
- crypto_chacha_init(state, ctx, req->iv);
-
- kernel_neon_begin();
- hchacha_block_neon(state, subctx.key, ctx->nrounds);
- kernel_neon_end();
+ chacha_init_generic(state, ctx->key, req->iv);
+ hchacha_block_arch(state, subctx.key, ctx->nrounds);
subctx.nrounds = ctx->nrounds;
memcpy(&real_iv[0], req->iv + 24, 8);
@@ -134,7 +166,7 @@ static struct skcipher_alg algs[] = {
.ivsize = CHACHA_IV_SIZE,
.chunksize = CHACHA_BLOCK_SIZE,
.walksize = 5 * CHACHA_BLOCK_SIZE,
- .setkey = crypto_chacha20_setkey,
+ .setkey = chacha20_setkey,
.encrypt = chacha_neon,
.decrypt = chacha_neon,
}, {
@@ -150,7 +182,7 @@ static struct skcipher_alg algs[] = {
.ivsize = XCHACHA_IV_SIZE,
.chunksize = CHACHA_BLOCK_SIZE,
.walksize = 5 * CHACHA_BLOCK_SIZE,
- .setkey = crypto_chacha20_setkey,
+ .setkey = chacha20_setkey,
.encrypt = xchacha_neon,
.decrypt = xchacha_neon,
}, {
@@ -166,7 +198,7 @@ static struct skcipher_alg algs[] = {
.ivsize = XCHACHA_IV_SIZE,
.chunksize = CHACHA_BLOCK_SIZE,
.walksize = 5 * CHACHA_BLOCK_SIZE,
- .setkey = crypto_chacha12_setkey,
+ .setkey = chacha12_setkey,
.encrypt = xchacha_neon,
.decrypt = xchacha_neon,
}
@@ -175,14 +207,17 @@ static struct skcipher_alg algs[] = {
static int __init chacha_simd_mod_init(void)
{
if (!cpu_have_named_feature(ASIMD))
- return -ENODEV;
+ return 0;
+
+ static_branch_enable(&have_neon);
return crypto_register_skciphers(algs, ARRAY_SIZE(algs));
}
static void __exit chacha_simd_mod_fini(void)
{
- crypto_unregister_skciphers(algs, ARRAY_SIZE(algs));
+ if (cpu_have_named_feature(ASIMD))
+ crypto_unregister_skciphers(algs, ARRAY_SIZE(algs));
}
module_init(chacha_simd_mod_init);
diff --git a/arch/arm64/crypto/ghash-ce-core.S b/arch/arm64/crypto/ghash-ce-core.S
index 410e8afcf5a7..a791c4adf8e6 100644
--- a/arch/arm64/crypto/ghash-ce-core.S
+++ b/arch/arm64/crypto/ghash-ce-core.S
@@ -13,8 +13,8 @@
T1 .req v2
T2 .req v3
MASK .req v4
- XL .req v5
- XM .req v6
+ XM .req v5
+ XL .req v6
XH .req v7
IN1 .req v7
@@ -358,20 +358,37 @@ ENTRY(pmull_ghash_update_p8)
__pmull_ghash p8
ENDPROC(pmull_ghash_update_p8)
- KS0 .req v12
- KS1 .req v13
- INP0 .req v14
- INP1 .req v15
-
- .macro load_round_keys, rounds, rk
- cmp \rounds, #12
- blo 2222f /* 128 bits */
- beq 1111f /* 192 bits */
- ld1 {v17.4s-v18.4s}, [\rk], #32
-1111: ld1 {v19.4s-v20.4s}, [\rk], #32
-2222: ld1 {v21.4s-v24.4s}, [\rk], #64
- ld1 {v25.4s-v28.4s}, [\rk], #64
- ld1 {v29.4s-v31.4s}, [\rk]
+ KS0 .req v8
+ KS1 .req v9
+ KS2 .req v10
+ KS3 .req v11
+
+ INP0 .req v21
+ INP1 .req v22
+ INP2 .req v23
+ INP3 .req v24
+
+ K0 .req v25
+ K1 .req v26
+ K2 .req v27
+ K3 .req v28
+ K4 .req v12
+ K5 .req v13
+ K6 .req v4
+ K7 .req v5
+ K8 .req v14
+ K9 .req v15
+ KK .req v29
+ KL .req v30
+ KM .req v31
+
+ .macro load_round_keys, rounds, rk, tmp
+ add \tmp, \rk, #64
+ ld1 {K0.4s-K3.4s}, [\rk]
+ ld1 {K4.4s-K5.4s}, [\tmp]
+ add \tmp, \rk, \rounds, lsl #4
+ sub \tmp, \tmp, #32
+ ld1 {KK.4s-KM.4s}, [\tmp]
.endm
.macro enc_round, state, key
@@ -379,197 +396,367 @@ ENDPROC(pmull_ghash_update_p8)
aesmc \state\().16b, \state\().16b
.endm
- .macro enc_block, state, rounds
- cmp \rounds, #12
- b.lo 2222f /* 128 bits */
- b.eq 1111f /* 192 bits */
- enc_round \state, v17
- enc_round \state, v18
-1111: enc_round \state, v19
- enc_round \state, v20
-2222: .irp key, v21, v22, v23, v24, v25, v26, v27, v28, v29
+ .macro enc_qround, s0, s1, s2, s3, key
+ enc_round \s0, \key
+ enc_round \s1, \key
+ enc_round \s2, \key
+ enc_round \s3, \key
+ .endm
+
+ .macro enc_block, state, rounds, rk, tmp
+ add \tmp, \rk, #96
+ ld1 {K6.4s-K7.4s}, [\tmp], #32
+ .irp key, K0, K1, K2, K3, K4 K5
enc_round \state, \key
.endr
- aese \state\().16b, v30.16b
- eor \state\().16b, \state\().16b, v31.16b
+
+ tbnz \rounds, #2, .Lnot128_\@
+.Lout256_\@:
+ enc_round \state, K6
+ enc_round \state, K7
+
+.Lout192_\@:
+ enc_round \state, KK
+ aese \state\().16b, KL.16b
+ eor \state\().16b, \state\().16b, KM.16b
+
+ .subsection 1
+.Lnot128_\@:
+ ld1 {K8.4s-K9.4s}, [\tmp], #32
+ enc_round \state, K6
+ enc_round \state, K7
+ ld1 {K6.4s-K7.4s}, [\tmp]
+ enc_round \state, K8
+ enc_round \state, K9
+ tbz \rounds, #1, .Lout192_\@
+ b .Lout256_\@
+ .previous
.endm
+ .align 6
.macro pmull_gcm_do_crypt, enc
- ld1 {SHASH.2d}, [x4], #16
- ld1 {HH.2d}, [x4]
- ld1 {XL.2d}, [x1]
- ldr x8, [x5, #8] // load lower counter
+ stp x29, x30, [sp, #-32]!
+ mov x29, sp
+ str x19, [sp, #24]
+
+ load_round_keys x7, x6, x8
+
+ ld1 {SHASH.2d}, [x3], #16
+ ld1 {HH.2d-HH4.2d}, [x3]
- movi MASK.16b, #0xe1
trn1 SHASH2.2d, SHASH.2d, HH.2d
trn2 T1.2d, SHASH.2d, HH.2d
-CPU_LE( rev x8, x8 )
- shl MASK.2d, MASK.2d, #57
eor SHASH2.16b, SHASH2.16b, T1.16b
- .if \enc == 1
- ldr x10, [sp]
- ld1 {KS0.16b-KS1.16b}, [x10]
- .endif
+ trn1 HH34.2d, HH3.2d, HH4.2d
+ trn2 T1.2d, HH3.2d, HH4.2d
+ eor HH34.16b, HH34.16b, T1.16b
- cbnz x6, 4f
+ ld1 {XL.2d}, [x4]
-0: ld1 {INP0.16b-INP1.16b}, [x3], #32
+ cbz x0, 3f // tag only?
- rev x9, x8
- add x11, x8, #1
- add x8, x8, #2
+ ldr w8, [x5, #12] // load lower counter
+CPU_LE( rev w8, w8 )
- .if \enc == 1
- eor INP0.16b, INP0.16b, KS0.16b // encrypt input
- eor INP1.16b, INP1.16b, KS1.16b
+0: mov w9, #4 // max blocks per round
+ add x10, x0, #0xf
+ lsr x10, x10, #4 // remaining blocks
+
+ subs x0, x0, #64
+ csel w9, w10, w9, mi
+ add w8, w8, w9
+
+ bmi 1f
+ ld1 {INP0.16b-INP3.16b}, [x2], #64
+ .subsection 1
+ /*
+ * Populate the four input registers right to left with up to 63 bytes
+ * of data, using overlapping loads to avoid branches.
+ *
+ * INP0 INP1 INP2 INP3
+ * 1 byte | | | |x |
+ * 16 bytes | | | |xxxxxxxx|
+ * 17 bytes | | |xxxxxxxx|x |
+ * 47 bytes | |xxxxxxxx|xxxxxxxx|xxxxxxx |
+ * etc etc
+ *
+ * Note that this code may read up to 15 bytes before the start of
+ * the input. It is up to the calling code to ensure this is safe if
+ * this happens in the first iteration of the loop (i.e., when the
+ * input size is < 16 bytes)
+ */
+1: mov x15, #16
+ ands x19, x0, #0xf
+ csel x19, x19, x15, ne
+ adr_l x17, .Lpermute_table + 16
+
+ sub x11, x15, x19
+ add x12, x17, x11
+ sub x17, x17, x11
+ ld1 {T1.16b}, [x12]
+ sub x10, x1, x11
+ sub x11, x2, x11
+
+ cmp x0, #-16
+ csel x14, x15, xzr, gt
+ cmp x0, #-32
+ csel x15, x15, xzr, gt
+ cmp x0, #-48
+ csel x16, x19, xzr, gt
+ csel x1, x1, x10, gt
+ csel x2, x2, x11, gt
+
+ ld1 {INP0.16b}, [x2], x14
+ ld1 {INP1.16b}, [x2], x15
+ ld1 {INP2.16b}, [x2], x16
+ ld1 {INP3.16b}, [x2]
+ tbl INP3.16b, {INP3.16b}, T1.16b
+ b 2f
+ .previous
+
+2: .if \enc == 0
+ bl pmull_gcm_ghash_4x
.endif
- ld1 {KS0.8b}, [x5] // load upper counter
- rev x11, x11
- sub w0, w0, #2
- mov KS1.8b, KS0.8b
- ins KS0.d[1], x9 // set lower counter
- ins KS1.d[1], x11
+ bl pmull_gcm_enc_4x
- rev64 T1.16b, INP1.16b
+ tbnz x0, #63, 6f
+ st1 {INP0.16b-INP3.16b}, [x1], #64
+ .if \enc == 1
+ bl pmull_gcm_ghash_4x
+ .endif
+ bne 0b
- cmp w7, #12
- b.ge 2f // AES-192/256?
+3: ldp x19, x10, [sp, #24]
+ cbz x10, 5f // output tag?
-1: enc_round KS0, v21
- ext IN1.16b, T1.16b, T1.16b, #8
+ ld1 {INP3.16b}, [x10] // load lengths[]
+ mov w9, #1
+ bl pmull_gcm_ghash_4x
- enc_round KS1, v21
- pmull2 XH2.1q, SHASH.2d, IN1.2d // a1 * b1
+ mov w11, #(0x1 << 24) // BE '1U'
+ ld1 {KS0.16b}, [x5]
+ mov KS0.s[3], w11
- enc_round KS0, v22
- eor T1.16b, T1.16b, IN1.16b
+ enc_block KS0, x7, x6, x12
- enc_round KS1, v22
- pmull XL2.1q, SHASH.1d, IN1.1d // a0 * b0
+ ext XL.16b, XL.16b, XL.16b, #8
+ rev64 XL.16b, XL.16b
+ eor XL.16b, XL.16b, KS0.16b
+ st1 {XL.16b}, [x10] // store tag
- enc_round KS0, v23
- pmull XM2.1q, SHASH2.1d, T1.1d // (a1 + a0)(b1 + b0)
+4: ldp x29, x30, [sp], #32
+ ret
- enc_round KS1, v23
- rev64 T1.16b, INP0.16b
- ext T2.16b, XL.16b, XL.16b, #8
+5:
+CPU_LE( rev w8, w8 )
+ str w8, [x5, #12] // store lower counter
+ st1 {XL.2d}, [x4]
+ b 4b
+
+6: ld1 {T1.16b-T2.16b}, [x17], #32 // permute vectors
+ sub x17, x17, x19, lsl #1
+
+ cmp w9, #1
+ beq 7f
+ .subsection 1
+7: ld1 {INP2.16b}, [x1]
+ tbx INP2.16b, {INP3.16b}, T1.16b
+ mov INP3.16b, INP2.16b
+ b 8f
+ .previous
+
+ st1 {INP0.16b}, [x1], x14
+ st1 {INP1.16b}, [x1], x15
+ st1 {INP2.16b}, [x1], x16
+ tbl INP3.16b, {INP3.16b}, T1.16b
+ tbx INP3.16b, {INP2.16b}, T2.16b
+8: st1 {INP3.16b}, [x1]
- enc_round KS0, v24
- ext IN1.16b, T1.16b, T1.16b, #8
- eor T1.16b, T1.16b, T2.16b
+ .if \enc == 1
+ ld1 {T1.16b}, [x17]
+ tbl INP3.16b, {INP3.16b}, T1.16b // clear non-data bits
+ bl pmull_gcm_ghash_4x
+ .endif
+ b 3b
+ .endm
- enc_round KS1, v24
- eor XL.16b, XL.16b, IN1.16b
+ /*
+ * void pmull_gcm_encrypt(int blocks, u8 dst[], const u8 src[],
+ * struct ghash_key const *k, u64 dg[], u8 ctr[],
+ * int rounds, u8 tag)
+ */
+ENTRY(pmull_gcm_encrypt)
+ pmull_gcm_do_crypt 1
+ENDPROC(pmull_gcm_encrypt)
- enc_round KS0, v25
- eor T1.16b, T1.16b, XL.16b
+ /*
+ * void pmull_gcm_decrypt(int blocks, u8 dst[], const u8 src[],
+ * struct ghash_key const *k, u64 dg[], u8 ctr[],
+ * int rounds, u8 tag)
+ */
+ENTRY(pmull_gcm_decrypt)
+ pmull_gcm_do_crypt 0
+ENDPROC(pmull_gcm_decrypt)
- enc_round KS1, v25
- pmull2 XH.1q, HH.2d, XL.2d // a1 * b1
+pmull_gcm_ghash_4x:
+ movi MASK.16b, #0xe1
+ shl MASK.2d, MASK.2d, #57
- enc_round KS0, v26
- pmull XL.1q, HH.1d, XL.1d // a0 * b0
+ rev64 T1.16b, INP0.16b
+ rev64 T2.16b, INP1.16b
+ rev64 TT3.16b, INP2.16b
+ rev64 TT4.16b, INP3.16b
- enc_round KS1, v26
- pmull2 XM.1q, SHASH2.2d, T1.2d // (a1 + a0)(b1 + b0)
+ ext XL.16b, XL.16b, XL.16b, #8
- enc_round KS0, v27
- eor XL.16b, XL.16b, XL2.16b
- eor XH.16b, XH.16b, XH2.16b
+ tbz w9, #2, 0f // <4 blocks?
+ .subsection 1
+0: movi XH2.16b, #0
+ movi XM2.16b, #0
+ movi XL2.16b, #0
- enc_round KS1, v27
- eor XM.16b, XM.16b, XM2.16b
- ext T1.16b, XL.16b, XH.16b, #8
+ tbz w9, #0, 1f // 2 blocks?
+ tbz w9, #1, 2f // 1 block?
- enc_round KS0, v28
- eor T2.16b, XL.16b, XH.16b
- eor XM.16b, XM.16b, T1.16b
+ eor T2.16b, T2.16b, XL.16b
+ ext T1.16b, T2.16b, T2.16b, #8
+ b .Lgh3
- enc_round KS1, v28
- eor XM.16b, XM.16b, T2.16b
+1: eor TT3.16b, TT3.16b, XL.16b
+ ext T2.16b, TT3.16b, TT3.16b, #8
+ b .Lgh2
- enc_round KS0, v29
- pmull T2.1q, XL.1d, MASK.1d
+2: eor TT4.16b, TT4.16b, XL.16b
+ ext IN1.16b, TT4.16b, TT4.16b, #8
+ b .Lgh1
+ .previous
- enc_round KS1, v29
- mov XH.d[0], XM.d[1]
- mov XM.d[1], XL.d[0]
+ eor T1.16b, T1.16b, XL.16b
+ ext IN1.16b, T1.16b, T1.16b, #8
- aese KS0.16b, v30.16b
- eor XL.16b, XM.16b, T2.16b
+ pmull2 XH2.1q, HH4.2d, IN1.2d // a1 * b1
+ eor T1.16b, T1.16b, IN1.16b
+ pmull XL2.1q, HH4.1d, IN1.1d // a0 * b0
+ pmull2 XM2.1q, HH34.2d, T1.2d // (a1 + a0)(b1 + b0)
- aese KS1.16b, v30.16b
- ext T2.16b, XL.16b, XL.16b, #8
+ ext T1.16b, T2.16b, T2.16b, #8
+.Lgh3: eor T2.16b, T2.16b, T1.16b
+ pmull2 XH.1q, HH3.2d, T1.2d // a1 * b1
+ pmull XL.1q, HH3.1d, T1.1d // a0 * b0
+ pmull XM.1q, HH34.1d, T2.1d // (a1 + a0)(b1 + b0)
- eor KS0.16b, KS0.16b, v31.16b
- pmull XL.1q, XL.1d, MASK.1d
- eor T2.16b, T2.16b, XH.16b
+ eor XH2.16b, XH2.16b, XH.16b
+ eor XL2.16b, XL2.16b, XL.16b
+ eor XM2.16b, XM2.16b, XM.16b
- eor KS1.16b, KS1.16b, v31.16b
- eor XL.16b, XL.16b, T2.16b
+ ext T2.16b, TT3.16b, TT3.16b, #8
+.Lgh2: eor TT3.16b, TT3.16b, T2.16b
+ pmull2 XH.1q, HH.2d, T2.2d // a1 * b1
+ pmull XL.1q, HH.1d, T2.1d // a0 * b0
+ pmull2 XM.1q, SHASH2.2d, TT3.2d // (a1 + a0)(b1 + b0)
- .if \enc == 0
- eor INP0.16b, INP0.16b, KS0.16b
- eor INP1.16b, INP1.16b, KS1.16b
- .endif
+ eor XH2.16b, XH2.16b, XH.16b
+ eor XL2.16b, XL2.16b, XL.16b
+ eor XM2.16b, XM2.16b, XM.16b
- st1 {INP0.16b-INP1.16b}, [x2], #32
+ ext IN1.16b, TT4.16b, TT4.16b, #8
+.Lgh1: eor TT4.16b, TT4.16b, IN1.16b
+ pmull XL.1q, SHASH.1d, IN1.1d // a0 * b0
+ pmull2 XH.1q, SHASH.2d, IN1.2d // a1 * b1
+ pmull XM.1q, SHASH2.1d, TT4.1d // (a1 + a0)(b1 + b0)
- cbnz w0, 0b
+ eor XH.16b, XH.16b, XH2.16b
+ eor XL.16b, XL.16b, XL2.16b
+ eor XM.16b, XM.16b, XM2.16b
-CPU_LE( rev x8, x8 )
- st1 {XL.2d}, [x1]
- str x8, [x5, #8] // store lower counter
+ eor T2.16b, XL.16b, XH.16b
+ ext T1.16b, XL.16b, XH.16b, #8
+ eor XM.16b, XM.16b, T2.16b
- .if \enc == 1
- st1 {KS0.16b-KS1.16b}, [x10]
- .endif
+ __pmull_reduce_p64
+
+ eor T2.16b, T2.16b, XH.16b
+ eor XL.16b, XL.16b, T2.16b
ret
+ENDPROC(pmull_gcm_ghash_4x)
+
+pmull_gcm_enc_4x:
+ ld1 {KS0.16b}, [x5] // load upper counter
+ sub w10, w8, #4
+ sub w11, w8, #3
+ sub w12, w8, #2
+ sub w13, w8, #1
+ rev w10, w10
+ rev w11, w11
+ rev w12, w12
+ rev w13, w13
+ mov KS1.16b, KS0.16b
+ mov KS2.16b, KS0.16b
+ mov KS3.16b, KS0.16b
+ ins KS0.s[3], w10 // set lower counter
+ ins KS1.s[3], w11
+ ins KS2.s[3], w12
+ ins KS3.s[3], w13
+
+ add x10, x6, #96 // round key pointer
+ ld1 {K6.4s-K7.4s}, [x10], #32
+ .irp key, K0, K1, K2, K3, K4, K5
+ enc_qround KS0, KS1, KS2, KS3, \key
+ .endr
-2: b.eq 3f // AES-192?
- enc_round KS0, v17
- enc_round KS1, v17
- enc_round KS0, v18
- enc_round KS1, v18
-3: enc_round KS0, v19
- enc_round KS1, v19
- enc_round KS0, v20
- enc_round KS1, v20
- b 1b
+ tbnz x7, #2, .Lnot128
+ .subsection 1
+.Lnot128:
+ ld1 {K8.4s-K9.4s}, [x10], #32
+ .irp key, K6, K7
+ enc_qround KS0, KS1, KS2, KS3, \key
+ .endr
+ ld1 {K6.4s-K7.4s}, [x10]
+ .irp key, K8, K9
+ enc_qround KS0, KS1, KS2, KS3, \key
+ .endr
+ tbz x7, #1, .Lout192
+ b .Lout256
+ .previous
-4: load_round_keys w7, x6
- b 0b
- .endm
+.Lout256:
+ .irp key, K6, K7
+ enc_qround KS0, KS1, KS2, KS3, \key
+ .endr
- /*
- * void pmull_gcm_encrypt(int blocks, u64 dg[], u8 dst[], const u8 src[],
- * struct ghash_key const *k, u8 ctr[],
- * int rounds, u8 ks[])
- */
-ENTRY(pmull_gcm_encrypt)
- pmull_gcm_do_crypt 1
-ENDPROC(pmull_gcm_encrypt)
+.Lout192:
+ enc_qround KS0, KS1, KS2, KS3, KK
- /*
- * void pmull_gcm_decrypt(int blocks, u64 dg[], u8 dst[], const u8 src[],
- * struct ghash_key const *k, u8 ctr[],
- * int rounds)
- */
-ENTRY(pmull_gcm_decrypt)
- pmull_gcm_do_crypt 0
-ENDPROC(pmull_gcm_decrypt)
+ aese KS0.16b, KL.16b
+ aese KS1.16b, KL.16b
+ aese KS2.16b, KL.16b
+ aese KS3.16b, KL.16b
+
+ eor KS0.16b, KS0.16b, KM.16b
+ eor KS1.16b, KS1.16b, KM.16b
+ eor KS2.16b, KS2.16b, KM.16b
+ eor KS3.16b, KS3.16b, KM.16b
+
+ eor INP0.16b, INP0.16b, KS0.16b
+ eor INP1.16b, INP1.16b, KS1.16b
+ eor INP2.16b, INP2.16b, KS2.16b
+ eor INP3.16b, INP3.16b, KS3.16b
- /*
- * void pmull_gcm_encrypt_block(u8 dst[], u8 src[], u8 rk[], int rounds)
- */
-ENTRY(pmull_gcm_encrypt_block)
- cbz x2, 0f
- load_round_keys w3, x2
-0: ld1 {v0.16b}, [x1]
- enc_block v0, w3
- st1 {v0.16b}, [x0]
ret
-ENDPROC(pmull_gcm_encrypt_block)
+ENDPROC(pmull_gcm_enc_4x)
+
+ .section ".rodata", "a"
+ .align 6
+.Lpermute_table:
+ .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ .byte 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
+ .byte 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf
+ .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ .byte 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
+ .byte 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf
+ .previous
diff --git a/arch/arm64/crypto/ghash-ce-glue.c b/arch/arm64/crypto/ghash-ce-glue.c
index 70b1469783f9..522cf004ce65 100644
--- a/arch/arm64/crypto/ghash-ce-glue.c
+++ b/arch/arm64/crypto/ghash-ce-glue.c
@@ -58,17 +58,15 @@ asmlinkage void pmull_ghash_update_p8(int blocks, u64 dg[], const char *src,
struct ghash_key const *k,
const char *head);
-asmlinkage void pmull_gcm_encrypt(int blocks, u64 dg[], u8 dst[],
- const u8 src[], struct ghash_key const *k,
+asmlinkage void pmull_gcm_encrypt(int bytes, u8 dst[], const u8 src[],
+ struct ghash_key const *k, u64 dg[],
u8 ctr[], u32 const rk[], int rounds,
- u8 ks[]);
+ u8 tag[]);
-asmlinkage void pmull_gcm_decrypt(int blocks, u64 dg[], u8 dst[],
- const u8 src[], struct ghash_key const *k,
- u8 ctr[], u32 const rk[], int rounds);
-
-asmlinkage void pmull_gcm_encrypt_block(u8 dst[], u8 const src[],
- u32 const rk[], int rounds);
+asmlinkage void pmull_gcm_decrypt(int bytes, u8 dst[], const u8 src[],
+ struct ghash_key const *k, u64 dg[],
+ u8 ctr[], u32 const rk[], int rounds,
+ u8 tag[]);
static int ghash_init(struct shash_desc *desc)
{
@@ -85,7 +83,7 @@ static void ghash_do_update(int blocks, u64 dg[], const char *src,
struct ghash_key const *k,
const char *head))
{
- if (likely(crypto_simd_usable())) {
+ if (likely(crypto_simd_usable() && simd_update)) {
kernel_neon_begin();
simd_update(blocks, dg, src, key, head);
kernel_neon_end();
@@ -398,136 +396,112 @@ static void gcm_calculate_auth_mac(struct aead_request *req, u64 dg[])
}
}
-static void gcm_final(struct aead_request *req, struct gcm_aes_ctx *ctx,
- u64 dg[], u8 tag[], int cryptlen)
-{
- u8 mac[AES_BLOCK_SIZE];
- u128 lengths;
-
- lengths.a = cpu_to_be64(req->assoclen * 8);
- lengths.b = cpu_to_be64(cryptlen * 8);
-
- ghash_do_update(1, dg, (void *)&lengths, &ctx->ghash_key, NULL,
- pmull_ghash_update_p64);
-
- put_unaligned_be64(dg[1], mac);
- put_unaligned_be64(dg[0], mac + 8);
-
- crypto_xor(tag, mac, AES_BLOCK_SIZE);
-}
-
static int gcm_encrypt(struct aead_request *req)
{
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct gcm_aes_ctx *ctx = crypto_aead_ctx(aead);
+ int nrounds = num_rounds(&ctx->aes_key);
struct skcipher_walk walk;
+ u8 buf[AES_BLOCK_SIZE];
u8 iv[AES_BLOCK_SIZE];
- u8 ks[2 * AES_BLOCK_SIZE];
- u8 tag[AES_BLOCK_SIZE];
u64 dg[2] = {};
- int nrounds = num_rounds(&ctx->aes_key);
+ u128 lengths;
+ u8 *tag;
int err;
+ lengths.a = cpu_to_be64(req->assoclen * 8);
+ lengths.b = cpu_to_be64(req->cryptlen * 8);
+
if (req->assoclen)
gcm_calculate_auth_mac(req, dg);
memcpy(iv, req->iv, GCM_IV_SIZE);
- put_unaligned_be32(1, iv + GCM_IV_SIZE);
+ put_unaligned_be32(2, iv + GCM_IV_SIZE);
err = skcipher_walk_aead_encrypt(&walk, req, false);
- if (likely(crypto_simd_usable() && walk.total >= 2 * AES_BLOCK_SIZE)) {
- u32 const *rk = NULL;
-
- kernel_neon_begin();
- pmull_gcm_encrypt_block(tag, iv, ctx->aes_key.key_enc, nrounds);
- put_unaligned_be32(2, iv + GCM_IV_SIZE);
- pmull_gcm_encrypt_block(ks, iv, NULL, nrounds);
- put_unaligned_be32(3, iv + GCM_IV_SIZE);
- pmull_gcm_encrypt_block(ks + AES_BLOCK_SIZE, iv, NULL, nrounds);
- put_unaligned_be32(4, iv + GCM_IV_SIZE);
-
+ if (likely(crypto_simd_usable())) {
do {
- int blocks = walk.nbytes / (2 * AES_BLOCK_SIZE) * 2;
+ const u8 *src = walk.src.virt.addr;
+ u8 *dst = walk.dst.virt.addr;
+ int nbytes = walk.nbytes;
+
+ tag = (u8 *)&lengths;
- if (rk)
- kernel_neon_begin();
+ if (unlikely(nbytes > 0 && nbytes < AES_BLOCK_SIZE)) {
+ src = dst = memcpy(buf + sizeof(buf) - nbytes,
+ src, nbytes);
+ } else if (nbytes < walk.total) {
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
+ tag = NULL;
+ }
- pmull_gcm_encrypt(blocks, dg, walk.dst.virt.addr,
- walk.src.virt.addr, &ctx->ghash_key,
- iv, rk, nrounds, ks);
+ kernel_neon_begin();
+ pmull_gcm_encrypt(nbytes, dst, src, &ctx->ghash_key, dg,
+ iv, ctx->aes_key.key_enc, nrounds,
+ tag);
kernel_neon_end();
- err = skcipher_walk_done(&walk,
- walk.nbytes % (2 * AES_BLOCK_SIZE));
+ if (unlikely(!nbytes))
+ break;
- rk = ctx->aes_key.key_enc;
- } while (walk.nbytes >= 2 * AES_BLOCK_SIZE);
- } else {
- aes_encrypt(&ctx->aes_key, tag, iv);
- put_unaligned_be32(2, iv + GCM_IV_SIZE);
+ if (unlikely(nbytes > 0 && nbytes < AES_BLOCK_SIZE))
+ memcpy(walk.dst.virt.addr,
+ buf + sizeof(buf) - nbytes, nbytes);
- while (walk.nbytes >= (2 * AES_BLOCK_SIZE)) {
- const int blocks =
- walk.nbytes / (2 * AES_BLOCK_SIZE) * 2;
+ err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
+ } while (walk.nbytes);
+ } else {
+ while (walk.nbytes >= AES_BLOCK_SIZE) {
+ int blocks = walk.nbytes / AES_BLOCK_SIZE;
+ const u8 *src = walk.src.virt.addr;
u8 *dst = walk.dst.virt.addr;
- u8 *src = walk.src.virt.addr;
int remaining = blocks;
do {
- aes_encrypt(&ctx->aes_key, ks, iv);
- crypto_xor_cpy(dst, src, ks, AES_BLOCK_SIZE);
+ aes_encrypt(&ctx->aes_key, buf, iv);
+ crypto_xor_cpy(dst, src, buf, AES_BLOCK_SIZE);
crypto_inc(iv, AES_BLOCK_SIZE);
dst += AES_BLOCK_SIZE;
src += AES_BLOCK_SIZE;
} while (--remaining > 0);
- ghash_do_update(blocks, dg,
- walk.dst.virt.addr, &ctx->ghash_key,
- NULL, pmull_ghash_update_p64);
+ ghash_do_update(blocks, dg, walk.dst.virt.addr,
+ &ctx->ghash_key, NULL, NULL);
err = skcipher_walk_done(&walk,
- walk.nbytes % (2 * AES_BLOCK_SIZE));
- }
- if (walk.nbytes) {
- aes_encrypt(&ctx->aes_key, ks, iv);
- if (walk.nbytes > AES_BLOCK_SIZE) {
- crypto_inc(iv, AES_BLOCK_SIZE);
- aes_encrypt(&ctx->aes_key, ks + AES_BLOCK_SIZE, iv);
- }
+ walk.nbytes % AES_BLOCK_SIZE);
}
- }
- /* handle the tail */
- if (walk.nbytes) {
- u8 buf[GHASH_BLOCK_SIZE];
- unsigned int nbytes = walk.nbytes;
- u8 *dst = walk.dst.virt.addr;
- u8 *head = NULL;
+ /* handle the tail */
+ if (walk.nbytes) {
+ aes_encrypt(&ctx->aes_key, buf, iv);
- crypto_xor_cpy(walk.dst.virt.addr, walk.src.virt.addr, ks,
- walk.nbytes);
+ crypto_xor_cpy(walk.dst.virt.addr, walk.src.virt.addr,
+ buf, walk.nbytes);
- if (walk.nbytes > GHASH_BLOCK_SIZE) {
- head = dst;
- dst += GHASH_BLOCK_SIZE;
- nbytes %= GHASH_BLOCK_SIZE;
+ memcpy(buf, walk.dst.virt.addr, walk.nbytes);
+ memset(buf + walk.nbytes, 0, sizeof(buf) - walk.nbytes);
}
- memcpy(buf, dst, nbytes);
- memset(buf + nbytes, 0, GHASH_BLOCK_SIZE - nbytes);
- ghash_do_update(!!nbytes, dg, buf, &ctx->ghash_key, head,
- pmull_ghash_update_p64);
+ tag = (u8 *)&lengths;
+ ghash_do_update(1, dg, tag, &ctx->ghash_key,
+ walk.nbytes ? buf : NULL, NULL);
- err = skcipher_walk_done(&walk, 0);
+ if (walk.nbytes)
+ err = skcipher_walk_done(&walk, 0);
+
+ put_unaligned_be64(dg[1], tag);
+ put_unaligned_be64(dg[0], tag + 8);
+ put_unaligned_be32(1, iv + GCM_IV_SIZE);
+ aes_encrypt(&ctx->aes_key, iv, iv);
+ crypto_xor(tag, iv, AES_BLOCK_SIZE);
}
if (err)
return err;
- gcm_final(req, ctx, dg, tag, req->cryptlen);
-
/* copy authtag to end of dst */
scatterwalk_map_and_copy(tag, req->dst, req->assoclen + req->cryptlen,
crypto_aead_authsize(aead), 1);
@@ -540,75 +514,65 @@ static int gcm_decrypt(struct aead_request *req)
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct gcm_aes_ctx *ctx = crypto_aead_ctx(aead);
unsigned int authsize = crypto_aead_authsize(aead);
+ int nrounds = num_rounds(&ctx->aes_key);
struct skcipher_walk walk;
- u8 iv[2 * AES_BLOCK_SIZE];
- u8 tag[AES_BLOCK_SIZE];
- u8 buf[2 * GHASH_BLOCK_SIZE];
+ u8 buf[AES_BLOCK_SIZE];
+ u8 iv[AES_BLOCK_SIZE];
u64 dg[2] = {};
- int nrounds = num_rounds(&ctx->aes_key);
+ u128 lengths;
+ u8 *tag;
int err;
+ lengths.a = cpu_to_be64(req->assoclen * 8);
+ lengths.b = cpu_to_be64((req->cryptlen - authsize) * 8);
+
if (req->assoclen)
gcm_calculate_auth_mac(req, dg);
memcpy(iv, req->iv, GCM_IV_SIZE);
- put_unaligned_be32(1, iv + GCM_IV_SIZE);
+ put_unaligned_be32(2, iv + GCM_IV_SIZE);
err = skcipher_walk_aead_decrypt(&walk, req, false);
- if (likely(crypto_simd_usable() && walk.total >= 2 * AES_BLOCK_SIZE)) {
- u32 const *rk = NULL;
-
- kernel_neon_begin();
- pmull_gcm_encrypt_block(tag, iv, ctx->aes_key.key_enc, nrounds);
- put_unaligned_be32(2, iv + GCM_IV_SIZE);
-
+ if (likely(crypto_simd_usable())) {
do {
- int blocks = walk.nbytes / (2 * AES_BLOCK_SIZE) * 2;
- int rem = walk.total - blocks * AES_BLOCK_SIZE;
-
- if (rk)
- kernel_neon_begin();
-
- pmull_gcm_decrypt(blocks, dg, walk.dst.virt.addr,
- walk.src.virt.addr, &ctx->ghash_key,
- iv, rk, nrounds);
-
- /* check if this is the final iteration of the loop */
- if (rem < (2 * AES_BLOCK_SIZE)) {
- u8 *iv2 = iv + AES_BLOCK_SIZE;
-
- if (rem > AES_BLOCK_SIZE) {
- memcpy(iv2, iv, AES_BLOCK_SIZE);
- crypto_inc(iv2, AES_BLOCK_SIZE);
- }
+ const u8 *src = walk.src.virt.addr;
+ u8 *dst = walk.dst.virt.addr;
+ int nbytes = walk.nbytes;
- pmull_gcm_encrypt_block(iv, iv, NULL, nrounds);
+ tag = (u8 *)&lengths;
- if (rem > AES_BLOCK_SIZE)
- pmull_gcm_encrypt_block(iv2, iv2, NULL,
- nrounds);
+ if (unlikely(nbytes > 0 && nbytes < AES_BLOCK_SIZE)) {
+ src = dst = memcpy(buf + sizeof(buf) - nbytes,
+ src, nbytes);
+ } else if (nbytes < walk.total) {
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
+ tag = NULL;
}
+ kernel_neon_begin();
+ pmull_gcm_decrypt(nbytes, dst, src, &ctx->ghash_key, dg,
+ iv, ctx->aes_key.key_enc, nrounds,
+ tag);
kernel_neon_end();
- err = skcipher_walk_done(&walk,
- walk.nbytes % (2 * AES_BLOCK_SIZE));
+ if (unlikely(!nbytes))
+ break;
- rk = ctx->aes_key.key_enc;
- } while (walk.nbytes >= 2 * AES_BLOCK_SIZE);
- } else {
- aes_encrypt(&ctx->aes_key, tag, iv);
- put_unaligned_be32(2, iv + GCM_IV_SIZE);
+ if (unlikely(nbytes > 0 && nbytes < AES_BLOCK_SIZE))
+ memcpy(walk.dst.virt.addr,
+ buf + sizeof(buf) - nbytes, nbytes);
- while (walk.nbytes >= (2 * AES_BLOCK_SIZE)) {
- int blocks = walk.nbytes / (2 * AES_BLOCK_SIZE) * 2;
+ err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
+ } while (walk.nbytes);
+ } else {
+ while (walk.nbytes >= AES_BLOCK_SIZE) {
+ int blocks = walk.nbytes / AES_BLOCK_SIZE;
+ const u8 *src = walk.src.virt.addr;
u8 *dst = walk.dst.virt.addr;
- u8 *src = walk.src.virt.addr;
ghash_do_update(blocks, dg, walk.src.virt.addr,
- &ctx->ghash_key, NULL,
- pmull_ghash_update_p64);
+ &ctx->ghash_key, NULL, NULL);
do {
aes_encrypt(&ctx->aes_key, buf, iv);
@@ -620,49 +584,38 @@ static int gcm_decrypt(struct aead_request *req)
} while (--blocks > 0);
err = skcipher_walk_done(&walk,
- walk.nbytes % (2 * AES_BLOCK_SIZE));
+ walk.nbytes % AES_BLOCK_SIZE);
}
- if (walk.nbytes) {
- if (walk.nbytes > AES_BLOCK_SIZE) {
- u8 *iv2 = iv + AES_BLOCK_SIZE;
-
- memcpy(iv2, iv, AES_BLOCK_SIZE);
- crypto_inc(iv2, AES_BLOCK_SIZE);
- aes_encrypt(&ctx->aes_key, iv2, iv2);
- }
- aes_encrypt(&ctx->aes_key, iv, iv);
+ /* handle the tail */
+ if (walk.nbytes) {
+ memcpy(buf, walk.src.virt.addr, walk.nbytes);
+ memset(buf + walk.nbytes, 0, sizeof(buf) - walk.nbytes);
}
- }
- /* handle the tail */
- if (walk.nbytes) {
- const u8 *src = walk.src.virt.addr;
- const u8 *head = NULL;
- unsigned int nbytes = walk.nbytes;
+ tag = (u8 *)&lengths;
+ ghash_do_update(1, dg, tag, &ctx->ghash_key,
+ walk.nbytes ? buf : NULL, NULL);
- if (walk.nbytes > GHASH_BLOCK_SIZE) {
- head = src;
- src += GHASH_BLOCK_SIZE;
- nbytes %= GHASH_BLOCK_SIZE;
- }
+ if (walk.nbytes) {
+ aes_encrypt(&ctx->aes_key, buf, iv);
- memcpy(buf, src, nbytes);
- memset(buf + nbytes, 0, GHASH_BLOCK_SIZE - nbytes);
- ghash_do_update(!!nbytes, dg, buf, &ctx->ghash_key, head,
- pmull_ghash_update_p64);
+ crypto_xor_cpy(walk.dst.virt.addr, walk.src.virt.addr,
+ buf, walk.nbytes);
- crypto_xor_cpy(walk.dst.virt.addr, walk.src.virt.addr, iv,
- walk.nbytes);
+ err = skcipher_walk_done(&walk, 0);
+ }
- err = skcipher_walk_done(&walk, 0);
+ put_unaligned_be64(dg[1], tag);
+ put_unaligned_be64(dg[0], tag + 8);
+ put_unaligned_be32(1, iv + GCM_IV_SIZE);
+ aes_encrypt(&ctx->aes_key, iv, iv);
+ crypto_xor(tag, iv, AES_BLOCK_SIZE);
}
if (err)
return err;
- gcm_final(req, ctx, dg, tag, req->cryptlen - authsize);
-
/* compare calculated auth tag with the stored one */
scatterwalk_map_and_copy(buf, req->src,
req->assoclen + req->cryptlen - authsize,
@@ -675,7 +628,7 @@ static int gcm_decrypt(struct aead_request *req)
static struct aead_alg gcm_aes_alg = {
.ivsize = GCM_IV_SIZE,
- .chunksize = 2 * AES_BLOCK_SIZE,
+ .chunksize = AES_BLOCK_SIZE,
.maxauthsize = AES_BLOCK_SIZE,
.setkey = gcm_setkey,
.setauthsize = gcm_setauthsize,
diff --git a/arch/arm64/crypto/poly1305-armv8.pl b/arch/arm64/crypto/poly1305-armv8.pl
new file mode 100644
index 000000000000..6e5576d19af8
--- /dev/null
+++ b/arch/arm64/crypto/poly1305-armv8.pl
@@ -0,0 +1,913 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-1.0+ OR BSD-3-Clause
+#
+# ====================================================================
+# Written by Andy Polyakov, @dot-asm, initially for the OpenSSL
+# project.
+# ====================================================================
+#
+# This module implements Poly1305 hash for ARMv8.
+#
+# June 2015
+#
+# Numbers are cycles per processed byte with poly1305_blocks alone.
+#
+# IALU/gcc-4.9 NEON
+#
+# Apple A7 1.86/+5% 0.72
+# Cortex-A53 2.69/+58% 1.47
+# Cortex-A57 2.70/+7% 1.14
+# Denver 1.64/+50% 1.18(*)
+# X-Gene 2.13/+68% 2.27
+# Mongoose 1.77/+75% 1.12
+# Kryo 2.70/+55% 1.13
+# ThunderX2 1.17/+95% 1.36
+#
+# (*) estimate based on resources availability is less than 1.0,
+# i.e. measured result is worse than expected, presumably binary
+# translator is not almighty;
+
+$flavour=shift;
+$output=shift;
+
+if ($flavour && $flavour ne "void") {
+ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+ ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
+ ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
+ die "can't locate arm-xlate.pl";
+
+ open STDOUT,"| \"$^X\" $xlate $flavour $output";
+} else {
+ open STDOUT,">$output";
+}
+
+my ($ctx,$inp,$len,$padbit) = map("x$_",(0..3));
+my ($mac,$nonce)=($inp,$len);
+
+my ($h0,$h1,$h2,$r0,$r1,$s1,$t0,$t1,$d0,$d1,$d2) = map("x$_",(4..14));
+
+$code.=<<___;
+#ifndef __KERNEL__
+# include "arm_arch.h"
+.extern OPENSSL_armcap_P
+#endif
+
+.text
+
+// forward "declarations" are required for Apple
+.globl poly1305_blocks
+.globl poly1305_emit
+
+.globl poly1305_init
+.type poly1305_init,%function
+.align 5
+poly1305_init:
+ cmp $inp,xzr
+ stp xzr,xzr,[$ctx] // zero hash value
+ stp xzr,xzr,[$ctx,#16] // [along with is_base2_26]
+
+ csel x0,xzr,x0,eq
+ b.eq .Lno_key
+
+#ifndef __KERNEL__
+ adrp x17,OPENSSL_armcap_P
+ ldr w17,[x17,#:lo12:OPENSSL_armcap_P]
+#endif
+
+ ldp $r0,$r1,[$inp] // load key
+ mov $s1,#0xfffffffc0fffffff
+ movk $s1,#0x0fff,lsl#48
+#ifdef __AARCH64EB__
+ rev $r0,$r0 // flip bytes
+ rev $r1,$r1
+#endif
+ and $r0,$r0,$s1 // &=0ffffffc0fffffff
+ and $s1,$s1,#-4
+ and $r1,$r1,$s1 // &=0ffffffc0ffffffc
+ mov w#$s1,#-1
+ stp $r0,$r1,[$ctx,#32] // save key value
+ str w#$s1,[$ctx,#48] // impossible key power value
+
+#ifndef __KERNEL__
+ tst w17,#ARMV7_NEON
+
+ adr $d0,.Lpoly1305_blocks
+ adr $r0,.Lpoly1305_blocks_neon
+ adr $d1,.Lpoly1305_emit
+
+ csel $d0,$d0,$r0,eq
+
+# ifdef __ILP32__
+ stp w#$d0,w#$d1,[$len]
+# else
+ stp $d0,$d1,[$len]
+# endif
+#endif
+ mov x0,#1
+.Lno_key:
+ ret
+.size poly1305_init,.-poly1305_init
+
+.type poly1305_blocks,%function
+.align 5
+poly1305_blocks:
+.Lpoly1305_blocks:
+ ands $len,$len,#-16
+ b.eq .Lno_data
+
+ ldp $h0,$h1,[$ctx] // load hash value
+ ldp $h2,x17,[$ctx,#16] // [along with is_base2_26]
+ ldp $r0,$r1,[$ctx,#32] // load key value
+
+#ifdef __AARCH64EB__
+ lsr $d0,$h0,#32
+ mov w#$d1,w#$h0
+ lsr $d2,$h1,#32
+ mov w15,w#$h1
+ lsr x16,$h2,#32
+#else
+ mov w#$d0,w#$h0
+ lsr $d1,$h0,#32
+ mov w#$d2,w#$h1
+ lsr x15,$h1,#32
+ mov w16,w#$h2
+#endif
+
+ add $d0,$d0,$d1,lsl#26 // base 2^26 -> base 2^64
+ lsr $d1,$d2,#12
+ adds $d0,$d0,$d2,lsl#52
+ add $d1,$d1,x15,lsl#14
+ adc $d1,$d1,xzr
+ lsr $d2,x16,#24
+ adds $d1,$d1,x16,lsl#40
+ adc $d2,$d2,xzr
+
+ cmp x17,#0 // is_base2_26?
+ add $s1,$r1,$r1,lsr#2 // s1 = r1 + (r1 >> 2)
+ csel $h0,$h0,$d0,eq // choose between radixes
+ csel $h1,$h1,$d1,eq
+ csel $h2,$h2,$d2,eq
+
+.Loop:
+ ldp $t0,$t1,[$inp],#16 // load input
+ sub $len,$len,#16
+#ifdef __AARCH64EB__
+ rev $t0,$t0
+ rev $t1,$t1
+#endif
+ adds $h0,$h0,$t0 // accumulate input
+ adcs $h1,$h1,$t1
+
+ mul $d0,$h0,$r0 // h0*r0
+ adc $h2,$h2,$padbit
+ umulh $d1,$h0,$r0
+
+ mul $t0,$h1,$s1 // h1*5*r1
+ umulh $t1,$h1,$s1
+
+ adds $d0,$d0,$t0
+ mul $t0,$h0,$r1 // h0*r1
+ adc $d1,$d1,$t1
+ umulh $d2,$h0,$r1
+
+ adds $d1,$d1,$t0
+ mul $t0,$h1,$r0 // h1*r0
+ adc $d2,$d2,xzr
+ umulh $t1,$h1,$r0
+
+ adds $d1,$d1,$t0
+ mul $t0,$h2,$s1 // h2*5*r1
+ adc $d2,$d2,$t1
+ mul $t1,$h2,$r0 // h2*r0
+
+ adds $d1,$d1,$t0
+ adc $d2,$d2,$t1
+
+ and $t0,$d2,#-4 // final reduction
+ and $h2,$d2,#3
+ add $t0,$t0,$d2,lsr#2
+ adds $h0,$d0,$t0
+ adcs $h1,$d1,xzr
+ adc $h2,$h2,xzr
+
+ cbnz $len,.Loop
+
+ stp $h0,$h1,[$ctx] // store hash value
+ stp $h2,xzr,[$ctx,#16] // [and clear is_base2_26]
+
+.Lno_data:
+ ret
+.size poly1305_blocks,.-poly1305_blocks
+
+.type poly1305_emit,%function
+.align 5
+poly1305_emit:
+.Lpoly1305_emit:
+ ldp $h0,$h1,[$ctx] // load hash base 2^64
+ ldp $h2,$r0,[$ctx,#16] // [along with is_base2_26]
+ ldp $t0,$t1,[$nonce] // load nonce
+
+#ifdef __AARCH64EB__
+ lsr $d0,$h0,#32
+ mov w#$d1,w#$h0
+ lsr $d2,$h1,#32
+ mov w15,w#$h1
+ lsr x16,$h2,#32
+#else
+ mov w#$d0,w#$h0
+ lsr $d1,$h0,#32
+ mov w#$d2,w#$h1
+ lsr x15,$h1,#32
+ mov w16,w#$h2
+#endif
+
+ add $d0,$d0,$d1,lsl#26 // base 2^26 -> base 2^64
+ lsr $d1,$d2,#12
+ adds $d0,$d0,$d2,lsl#52
+ add $d1,$d1,x15,lsl#14
+ adc $d1,$d1,xzr
+ lsr $d2,x16,#24
+ adds $d1,$d1,x16,lsl#40
+ adc $d2,$d2,xzr
+
+ cmp $r0,#0 // is_base2_26?
+ csel $h0,$h0,$d0,eq // choose between radixes
+ csel $h1,$h1,$d1,eq
+ csel $h2,$h2,$d2,eq
+
+ adds $d0,$h0,#5 // compare to modulus
+ adcs $d1,$h1,xzr
+ adc $d2,$h2,xzr
+
+ tst $d2,#-4 // see if it's carried/borrowed
+
+ csel $h0,$h0,$d0,eq
+ csel $h1,$h1,$d1,eq
+
+#ifdef __AARCH64EB__
+ ror $t0,$t0,#32 // flip nonce words
+ ror $t1,$t1,#32
+#endif
+ adds $h0,$h0,$t0 // accumulate nonce
+ adc $h1,$h1,$t1
+#ifdef __AARCH64EB__
+ rev $h0,$h0 // flip output bytes
+ rev $h1,$h1
+#endif
+ stp $h0,$h1,[$mac] // write result
+
+ ret
+.size poly1305_emit,.-poly1305_emit
+___
+my ($R0,$R1,$S1,$R2,$S2,$R3,$S3,$R4,$S4) = map("v$_.4s",(0..8));
+my ($IN01_0,$IN01_1,$IN01_2,$IN01_3,$IN01_4) = map("v$_.2s",(9..13));
+my ($IN23_0,$IN23_1,$IN23_2,$IN23_3,$IN23_4) = map("v$_.2s",(14..18));
+my ($ACC0,$ACC1,$ACC2,$ACC3,$ACC4) = map("v$_.2d",(19..23));
+my ($H0,$H1,$H2,$H3,$H4) = map("v$_.2s",(24..28));
+my ($T0,$T1,$MASK) = map("v$_",(29..31));
+
+my ($in2,$zeros)=("x16","x17");
+my $is_base2_26 = $zeros; # borrow
+
+$code.=<<___;
+.type poly1305_mult,%function
+.align 5
+poly1305_mult:
+ mul $d0,$h0,$r0 // h0*r0
+ umulh $d1,$h0,$r0
+
+ mul $t0,$h1,$s1 // h1*5*r1
+ umulh $t1,$h1,$s1
+
+ adds $d0,$d0,$t0
+ mul $t0,$h0,$r1 // h0*r1
+ adc $d1,$d1,$t1
+ umulh $d2,$h0,$r1
+
+ adds $d1,$d1,$t0
+ mul $t0,$h1,$r0 // h1*r0
+ adc $d2,$d2,xzr
+ umulh $t1,$h1,$r0
+
+ adds $d1,$d1,$t0
+ mul $t0,$h2,$s1 // h2*5*r1
+ adc $d2,$d2,$t1
+ mul $t1,$h2,$r0 // h2*r0
+
+ adds $d1,$d1,$t0
+ adc $d2,$d2,$t1
+
+ and $t0,$d2,#-4 // final reduction
+ and $h2,$d2,#3
+ add $t0,$t0,$d2,lsr#2
+ adds $h0,$d0,$t0
+ adcs $h1,$d1,xzr
+ adc $h2,$h2,xzr
+
+ ret
+.size poly1305_mult,.-poly1305_mult
+
+.type poly1305_splat,%function
+.align 4
+poly1305_splat:
+ and x12,$h0,#0x03ffffff // base 2^64 -> base 2^26
+ ubfx x13,$h0,#26,#26
+ extr x14,$h1,$h0,#52
+ and x14,x14,#0x03ffffff
+ ubfx x15,$h1,#14,#26
+ extr x16,$h2,$h1,#40
+
+ str w12,[$ctx,#16*0] // r0
+ add w12,w13,w13,lsl#2 // r1*5
+ str w13,[$ctx,#16*1] // r1
+ add w13,w14,w14,lsl#2 // r2*5
+ str w12,[$ctx,#16*2] // s1
+ str w14,[$ctx,#16*3] // r2
+ add w14,w15,w15,lsl#2 // r3*5
+ str w13,[$ctx,#16*4] // s2
+ str w15,[$ctx,#16*5] // r3
+ add w15,w16,w16,lsl#2 // r4*5
+ str w14,[$ctx,#16*6] // s3
+ str w16,[$ctx,#16*7] // r4
+ str w15,[$ctx,#16*8] // s4
+
+ ret
+.size poly1305_splat,.-poly1305_splat
+
+#ifdef __KERNEL__
+.globl poly1305_blocks_neon
+#endif
+.type poly1305_blocks_neon,%function
+.align 5
+poly1305_blocks_neon:
+.Lpoly1305_blocks_neon:
+ ldr $is_base2_26,[$ctx,#24]
+ cmp $len,#128
+ b.lo .Lpoly1305_blocks
+
+ .inst 0xd503233f // paciasp
+ stp x29,x30,[sp,#-80]!
+ add x29,sp,#0
+
+ stp d8,d9,[sp,#16] // meet ABI requirements
+ stp d10,d11,[sp,#32]
+ stp d12,d13,[sp,#48]
+ stp d14,d15,[sp,#64]
+
+ cbz $is_base2_26,.Lbase2_64_neon
+
+ ldp w10,w11,[$ctx] // load hash value base 2^26
+ ldp w12,w13,[$ctx,#8]
+ ldr w14,[$ctx,#16]
+
+ tst $len,#31
+ b.eq .Leven_neon
+
+ ldp $r0,$r1,[$ctx,#32] // load key value
+
+ add $h0,x10,x11,lsl#26 // base 2^26 -> base 2^64
+ lsr $h1,x12,#12
+ adds $h0,$h0,x12,lsl#52
+ add $h1,$h1,x13,lsl#14
+ adc $h1,$h1,xzr
+ lsr $h2,x14,#24
+ adds $h1,$h1,x14,lsl#40
+ adc $d2,$h2,xzr // can be partially reduced...
+
+ ldp $d0,$d1,[$inp],#16 // load input
+ sub $len,$len,#16
+ add $s1,$r1,$r1,lsr#2 // s1 = r1 + (r1 >> 2)
+
+#ifdef __AARCH64EB__
+ rev $d0,$d0
+ rev $d1,$d1
+#endif
+ adds $h0,$h0,$d0 // accumulate input
+ adcs $h1,$h1,$d1
+ adc $h2,$h2,$padbit
+
+ bl poly1305_mult
+
+ and x10,$h0,#0x03ffffff // base 2^64 -> base 2^26
+ ubfx x11,$h0,#26,#26
+ extr x12,$h1,$h0,#52
+ and x12,x12,#0x03ffffff
+ ubfx x13,$h1,#14,#26
+ extr x14,$h2,$h1,#40
+
+ b .Leven_neon
+
+.align 4
+.Lbase2_64_neon:
+ ldp $r0,$r1,[$ctx,#32] // load key value
+
+ ldp $h0,$h1,[$ctx] // load hash value base 2^64
+ ldr $h2,[$ctx,#16]
+
+ tst $len,#31
+ b.eq .Linit_neon
+
+ ldp $d0,$d1,[$inp],#16 // load input
+ sub $len,$len,#16
+ add $s1,$r1,$r1,lsr#2 // s1 = r1 + (r1 >> 2)
+#ifdef __AARCH64EB__
+ rev $d0,$d0
+ rev $d1,$d1
+#endif
+ adds $h0,$h0,$d0 // accumulate input
+ adcs $h1,$h1,$d1
+ adc $h2,$h2,$padbit
+
+ bl poly1305_mult
+
+.Linit_neon:
+ ldr w17,[$ctx,#48] // first table element
+ and x10,$h0,#0x03ffffff // base 2^64 -> base 2^26
+ ubfx x11,$h0,#26,#26
+ extr x12,$h1,$h0,#52
+ and x12,x12,#0x03ffffff
+ ubfx x13,$h1,#14,#26
+ extr x14,$h2,$h1,#40
+
+ cmp w17,#-1 // is value impossible?
+ b.ne .Leven_neon
+
+ fmov ${H0},x10
+ fmov ${H1},x11
+ fmov ${H2},x12
+ fmov ${H3},x13
+ fmov ${H4},x14
+
+ ////////////////////////////////// initialize r^n table
+ mov $h0,$r0 // r^1
+ add $s1,$r1,$r1,lsr#2 // s1 = r1 + (r1 >> 2)
+ mov $h1,$r1
+ mov $h2,xzr
+ add $ctx,$ctx,#48+12
+ bl poly1305_splat
+
+ bl poly1305_mult // r^2
+ sub $ctx,$ctx,#4
+ bl poly1305_splat
+
+ bl poly1305_mult // r^3
+ sub $ctx,$ctx,#4
+ bl poly1305_splat
+
+ bl poly1305_mult // r^4
+ sub $ctx,$ctx,#4
+ bl poly1305_splat
+ sub $ctx,$ctx,#48 // restore original $ctx
+ b .Ldo_neon
+
+.align 4
+.Leven_neon:
+ fmov ${H0},x10
+ fmov ${H1},x11
+ fmov ${H2},x12
+ fmov ${H3},x13
+ fmov ${H4},x14
+
+.Ldo_neon:
+ ldp x8,x12,[$inp,#32] // inp[2:3]
+ subs $len,$len,#64
+ ldp x9,x13,[$inp,#48]
+ add $in2,$inp,#96
+ adr $zeros,.Lzeros
+
+ lsl $padbit,$padbit,#24
+ add x15,$ctx,#48
+
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ and x5,x9,#0x03ffffff
+ ubfx x6,x8,#26,#26
+ ubfx x7,x9,#26,#26
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+ extr x8,x12,x8,#52
+ extr x9,x13,x9,#52
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ fmov $IN23_0,x4
+ and x8,x8,#0x03ffffff
+ and x9,x9,#0x03ffffff
+ ubfx x10,x12,#14,#26
+ ubfx x11,x13,#14,#26
+ add x12,$padbit,x12,lsr#40
+ add x13,$padbit,x13,lsr#40
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ fmov $IN23_1,x6
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ fmov $IN23_2,x8
+ fmov $IN23_3,x10
+ fmov $IN23_4,x12
+
+ ldp x8,x12,[$inp],#16 // inp[0:1]
+ ldp x9,x13,[$inp],#48
+
+ ld1 {$R0,$R1,$S1,$R2},[x15],#64
+ ld1 {$S2,$R3,$S3,$R4},[x15],#64
+ ld1 {$S4},[x15]
+
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ and x5,x9,#0x03ffffff
+ ubfx x6,x8,#26,#26
+ ubfx x7,x9,#26,#26
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+ extr x8,x12,x8,#52
+ extr x9,x13,x9,#52
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ fmov $IN01_0,x4
+ and x8,x8,#0x03ffffff
+ and x9,x9,#0x03ffffff
+ ubfx x10,x12,#14,#26
+ ubfx x11,x13,#14,#26
+ add x12,$padbit,x12,lsr#40
+ add x13,$padbit,x13,lsr#40
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ fmov $IN01_1,x6
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ movi $MASK.2d,#-1
+ fmov $IN01_2,x8
+ fmov $IN01_3,x10
+ fmov $IN01_4,x12
+ ushr $MASK.2d,$MASK.2d,#38
+
+ b.ls .Lskip_loop
+
+.align 4
+.Loop_neon:
+ ////////////////////////////////////////////////////////////////
+ // ((inp[0]*r^4+inp[2]*r^2+inp[4])*r^4+inp[6]*r^2
+ // ((inp[1]*r^4+inp[3]*r^2+inp[5])*r^3+inp[7]*r
+ // \___________________/
+ // ((inp[0]*r^4+inp[2]*r^2+inp[4])*r^4+inp[6]*r^2+inp[8])*r^2
+ // ((inp[1]*r^4+inp[3]*r^2+inp[5])*r^4+inp[7]*r^2+inp[9])*r
+ // \___________________/ \____________________/
+ //
+ // Note that we start with inp[2:3]*r^2. This is because it
+ // doesn't depend on reduction in previous iteration.
+ ////////////////////////////////////////////////////////////////
+ // d4 = h0*r4 + h1*r3 + h2*r2 + h3*r1 + h4*r0
+ // d3 = h0*r3 + h1*r2 + h2*r1 + h3*r0 + h4*5*r4
+ // d2 = h0*r2 + h1*r1 + h2*r0 + h3*5*r4 + h4*5*r3
+ // d1 = h0*r1 + h1*r0 + h2*5*r4 + h3*5*r3 + h4*5*r2
+ // d0 = h0*r0 + h1*5*r4 + h2*5*r3 + h3*5*r2 + h4*5*r1
+
+ subs $len,$len,#64
+ umull $ACC4,$IN23_0,${R4}[2]
+ csel $in2,$zeros,$in2,lo
+ umull $ACC3,$IN23_0,${R3}[2]
+ umull $ACC2,$IN23_0,${R2}[2]
+ ldp x8,x12,[$in2],#16 // inp[2:3] (or zero)
+ umull $ACC1,$IN23_0,${R1}[2]
+ ldp x9,x13,[$in2],#48
+ umull $ACC0,$IN23_0,${R0}[2]
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+
+ umlal $ACC4,$IN23_1,${R3}[2]
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ umlal $ACC3,$IN23_1,${R2}[2]
+ and x5,x9,#0x03ffffff
+ umlal $ACC2,$IN23_1,${R1}[2]
+ ubfx x6,x8,#26,#26
+ umlal $ACC1,$IN23_1,${R0}[2]
+ ubfx x7,x9,#26,#26
+ umlal $ACC0,$IN23_1,${S4}[2]
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+
+ umlal $ACC4,$IN23_2,${R2}[2]
+ extr x8,x12,x8,#52
+ umlal $ACC3,$IN23_2,${R1}[2]
+ extr x9,x13,x9,#52
+ umlal $ACC2,$IN23_2,${R0}[2]
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ umlal $ACC1,$IN23_2,${S4}[2]
+ fmov $IN23_0,x4
+ umlal $ACC0,$IN23_2,${S3}[2]
+ and x8,x8,#0x03ffffff
+
+ umlal $ACC4,$IN23_3,${R1}[2]
+ and x9,x9,#0x03ffffff
+ umlal $ACC3,$IN23_3,${R0}[2]
+ ubfx x10,x12,#14,#26
+ umlal $ACC2,$IN23_3,${S4}[2]
+ ubfx x11,x13,#14,#26
+ umlal $ACC1,$IN23_3,${S3}[2]
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ umlal $ACC0,$IN23_3,${S2}[2]
+ fmov $IN23_1,x6
+
+ add $IN01_2,$IN01_2,$H2
+ add x12,$padbit,x12,lsr#40
+ umlal $ACC4,$IN23_4,${R0}[2]
+ add x13,$padbit,x13,lsr#40
+ umlal $ACC3,$IN23_4,${S4}[2]
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ umlal $ACC2,$IN23_4,${S3}[2]
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ umlal $ACC1,$IN23_4,${S2}[2]
+ fmov $IN23_2,x8
+ umlal $ACC0,$IN23_4,${S1}[2]
+ fmov $IN23_3,x10
+
+ ////////////////////////////////////////////////////////////////
+ // (hash+inp[0:1])*r^4 and accumulate
+
+ add $IN01_0,$IN01_0,$H0
+ fmov $IN23_4,x12
+ umlal $ACC3,$IN01_2,${R1}[0]
+ ldp x8,x12,[$inp],#16 // inp[0:1]
+ umlal $ACC0,$IN01_2,${S3}[0]
+ ldp x9,x13,[$inp],#48
+ umlal $ACC4,$IN01_2,${R2}[0]
+ umlal $ACC1,$IN01_2,${S4}[0]
+ umlal $ACC2,$IN01_2,${R0}[0]
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+
+ add $IN01_1,$IN01_1,$H1
+ umlal $ACC3,$IN01_0,${R3}[0]
+ umlal $ACC4,$IN01_0,${R4}[0]
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ umlal $ACC2,$IN01_0,${R2}[0]
+ and x5,x9,#0x03ffffff
+ umlal $ACC0,$IN01_0,${R0}[0]
+ ubfx x6,x8,#26,#26
+ umlal $ACC1,$IN01_0,${R1}[0]
+ ubfx x7,x9,#26,#26
+
+ add $IN01_3,$IN01_3,$H3
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+ umlal $ACC3,$IN01_1,${R2}[0]
+ extr x8,x12,x8,#52
+ umlal $ACC4,$IN01_1,${R3}[0]
+ extr x9,x13,x9,#52
+ umlal $ACC0,$IN01_1,${S4}[0]
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ umlal $ACC2,$IN01_1,${R1}[0]
+ fmov $IN01_0,x4
+ umlal $ACC1,$IN01_1,${R0}[0]
+ and x8,x8,#0x03ffffff
+
+ add $IN01_4,$IN01_4,$H4
+ and x9,x9,#0x03ffffff
+ umlal $ACC3,$IN01_3,${R0}[0]
+ ubfx x10,x12,#14,#26
+ umlal $ACC0,$IN01_3,${S2}[0]
+ ubfx x11,x13,#14,#26
+ umlal $ACC4,$IN01_3,${R1}[0]
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ umlal $ACC1,$IN01_3,${S3}[0]
+ fmov $IN01_1,x6
+ umlal $ACC2,$IN01_3,${S4}[0]
+ add x12,$padbit,x12,lsr#40
+
+ umlal $ACC3,$IN01_4,${S4}[0]
+ add x13,$padbit,x13,lsr#40
+ umlal $ACC0,$IN01_4,${S1}[0]
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ umlal $ACC4,$IN01_4,${R0}[0]
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ umlal $ACC1,$IN01_4,${S2}[0]
+ fmov $IN01_2,x8
+ umlal $ACC2,$IN01_4,${S3}[0]
+ fmov $IN01_3,x10
+ fmov $IN01_4,x12
+
+ /////////////////////////////////////////////////////////////////
+ // lazy reduction as discussed in "NEON crypto" by D.J. Bernstein
+ // and P. Schwabe
+ //
+ // [see discussion in poly1305-armv4 module]
+
+ ushr $T0.2d,$ACC3,#26
+ xtn $H3,$ACC3
+ ushr $T1.2d,$ACC0,#26
+ and $ACC0,$ACC0,$MASK.2d
+ add $ACC4,$ACC4,$T0.2d // h3 -> h4
+ bic $H3,#0xfc,lsl#24 // &=0x03ffffff
+ add $ACC1,$ACC1,$T1.2d // h0 -> h1
+
+ ushr $T0.2d,$ACC4,#26
+ xtn $H4,$ACC4
+ ushr $T1.2d,$ACC1,#26
+ xtn $H1,$ACC1
+ bic $H4,#0xfc,lsl#24
+ add $ACC2,$ACC2,$T1.2d // h1 -> h2
+
+ add $ACC0,$ACC0,$T0.2d
+ shl $T0.2d,$T0.2d,#2
+ shrn $T1.2s,$ACC2,#26
+ xtn $H2,$ACC2
+ add $ACC0,$ACC0,$T0.2d // h4 -> h0
+ bic $H1,#0xfc,lsl#24
+ add $H3,$H3,$T1.2s // h2 -> h3
+ bic $H2,#0xfc,lsl#24
+
+ shrn $T0.2s,$ACC0,#26
+ xtn $H0,$ACC0
+ ushr $T1.2s,$H3,#26
+ bic $H3,#0xfc,lsl#24
+ bic $H0,#0xfc,lsl#24
+ add $H1,$H1,$T0.2s // h0 -> h1
+ add $H4,$H4,$T1.2s // h3 -> h4
+
+ b.hi .Loop_neon
+
+.Lskip_loop:
+ dup $IN23_2,${IN23_2}[0]
+ add $IN01_2,$IN01_2,$H2
+
+ ////////////////////////////////////////////////////////////////
+ // multiply (inp[0:1]+hash) or inp[2:3] by r^2:r^1
+
+ adds $len,$len,#32
+ b.ne .Long_tail
+
+ dup $IN23_2,${IN01_2}[0]
+ add $IN23_0,$IN01_0,$H0
+ add $IN23_3,$IN01_3,$H3
+ add $IN23_1,$IN01_1,$H1
+ add $IN23_4,$IN01_4,$H4
+
+.Long_tail:
+ dup $IN23_0,${IN23_0}[0]
+ umull2 $ACC0,$IN23_2,${S3}
+ umull2 $ACC3,$IN23_2,${R1}
+ umull2 $ACC4,$IN23_2,${R2}
+ umull2 $ACC2,$IN23_2,${R0}
+ umull2 $ACC1,$IN23_2,${S4}
+
+ dup $IN23_1,${IN23_1}[0]
+ umlal2 $ACC0,$IN23_0,${R0}
+ umlal2 $ACC2,$IN23_0,${R2}
+ umlal2 $ACC3,$IN23_0,${R3}
+ umlal2 $ACC4,$IN23_0,${R4}
+ umlal2 $ACC1,$IN23_0,${R1}
+
+ dup $IN23_3,${IN23_3}[0]
+ umlal2 $ACC0,$IN23_1,${S4}
+ umlal2 $ACC3,$IN23_1,${R2}
+ umlal2 $ACC2,$IN23_1,${R1}
+ umlal2 $ACC4,$IN23_1,${R3}
+ umlal2 $ACC1,$IN23_1,${R0}
+
+ dup $IN23_4,${IN23_4}[0]
+ umlal2 $ACC3,$IN23_3,${R0}
+ umlal2 $ACC4,$IN23_3,${R1}
+ umlal2 $ACC0,$IN23_3,${S2}
+ umlal2 $ACC1,$IN23_3,${S3}
+ umlal2 $ACC2,$IN23_3,${S4}
+
+ umlal2 $ACC3,$IN23_4,${S4}
+ umlal2 $ACC0,$IN23_4,${S1}
+ umlal2 $ACC4,$IN23_4,${R0}
+ umlal2 $ACC1,$IN23_4,${S2}
+ umlal2 $ACC2,$IN23_4,${S3}
+
+ b.eq .Lshort_tail
+
+ ////////////////////////////////////////////////////////////////
+ // (hash+inp[0:1])*r^4:r^3 and accumulate
+
+ add $IN01_0,$IN01_0,$H0
+ umlal $ACC3,$IN01_2,${R1}
+ umlal $ACC0,$IN01_2,${S3}
+ umlal $ACC4,$IN01_2,${R2}
+ umlal $ACC1,$IN01_2,${S4}
+ umlal $ACC2,$IN01_2,${R0}
+
+ add $IN01_1,$IN01_1,$H1
+ umlal $ACC3,$IN01_0,${R3}
+ umlal $ACC0,$IN01_0,${R0}
+ umlal $ACC4,$IN01_0,${R4}
+ umlal $ACC1,$IN01_0,${R1}
+ umlal $ACC2,$IN01_0,${R2}
+
+ add $IN01_3,$IN01_3,$H3
+ umlal $ACC3,$IN01_1,${R2}
+ umlal $ACC0,$IN01_1,${S4}
+ umlal $ACC4,$IN01_1,${R3}
+ umlal $ACC1,$IN01_1,${R0}
+ umlal $ACC2,$IN01_1,${R1}
+
+ add $IN01_4,$IN01_4,$H4
+ umlal $ACC3,$IN01_3,${R0}
+ umlal $ACC0,$IN01_3,${S2}
+ umlal $ACC4,$IN01_3,${R1}
+ umlal $ACC1,$IN01_3,${S3}
+ umlal $ACC2,$IN01_3,${S4}
+
+ umlal $ACC3,$IN01_4,${S4}
+ umlal $ACC0,$IN01_4,${S1}
+ umlal $ACC4,$IN01_4,${R0}
+ umlal $ACC1,$IN01_4,${S2}
+ umlal $ACC2,$IN01_4,${S3}
+
+.Lshort_tail:
+ ////////////////////////////////////////////////////////////////
+ // horizontal add
+
+ addp $ACC3,$ACC3,$ACC3
+ ldp d8,d9,[sp,#16] // meet ABI requirements
+ addp $ACC0,$ACC0,$ACC0
+ ldp d10,d11,[sp,#32]
+ addp $ACC4,$ACC4,$ACC4
+ ldp d12,d13,[sp,#48]
+ addp $ACC1,$ACC1,$ACC1
+ ldp d14,d15,[sp,#64]
+ addp $ACC2,$ACC2,$ACC2
+ ldr x30,[sp,#8]
+ .inst 0xd50323bf // autiasp
+
+ ////////////////////////////////////////////////////////////////
+ // lazy reduction, but without narrowing
+
+ ushr $T0.2d,$ACC3,#26
+ and $ACC3,$ACC3,$MASK.2d
+ ushr $T1.2d,$ACC0,#26
+ and $ACC0,$ACC0,$MASK.2d
+
+ add $ACC4,$ACC4,$T0.2d // h3 -> h4
+ add $ACC1,$ACC1,$T1.2d // h0 -> h1
+
+ ushr $T0.2d,$ACC4,#26
+ and $ACC4,$ACC4,$MASK.2d
+ ushr $T1.2d,$ACC1,#26
+ and $ACC1,$ACC1,$MASK.2d
+ add $ACC2,$ACC2,$T1.2d // h1 -> h2
+
+ add $ACC0,$ACC0,$T0.2d
+ shl $T0.2d,$T0.2d,#2
+ ushr $T1.2d,$ACC2,#26
+ and $ACC2,$ACC2,$MASK.2d
+ add $ACC0,$ACC0,$T0.2d // h4 -> h0
+ add $ACC3,$ACC3,$T1.2d // h2 -> h3
+
+ ushr $T0.2d,$ACC0,#26
+ and $ACC0,$ACC0,$MASK.2d
+ ushr $T1.2d,$ACC3,#26
+ and $ACC3,$ACC3,$MASK.2d
+ add $ACC1,$ACC1,$T0.2d // h0 -> h1
+ add $ACC4,$ACC4,$T1.2d // h3 -> h4
+
+ ////////////////////////////////////////////////////////////////
+ // write the result, can be partially reduced
+
+ st4 {$ACC0,$ACC1,$ACC2,$ACC3}[0],[$ctx],#16
+ mov x4,#1
+ st1 {$ACC4}[0],[$ctx]
+ str x4,[$ctx,#8] // set is_base2_26
+
+ ldr x29,[sp],#80
+ ret
+.size poly1305_blocks_neon,.-poly1305_blocks_neon
+
+.align 5
+.Lzeros:
+.long 0,0,0,0,0,0,0,0
+.asciz "Poly1305 for ARMv8, CRYPTOGAMS by \@dot-asm"
+.align 2
+#if !defined(__KERNEL__) && !defined(_WIN64)
+.comm OPENSSL_armcap_P,4,4
+.hidden OPENSSL_armcap_P
+#endif
+___
+
+foreach (split("\n",$code)) {
+ s/\b(shrn\s+v[0-9]+)\.[24]d/$1.2s/ or
+ s/\b(fmov\s+)v([0-9]+)[^,]*,\s*x([0-9]+)/$1d$2,x$3/ or
+ (m/\bdup\b/ and (s/\.[24]s/.2d/g or 1)) or
+ (m/\b(eor|and)/ and (s/\.[248][sdh]/.16b/g or 1)) or
+ (m/\bum(ul|la)l\b/ and (s/\.4s/.2s/g or 1)) or
+ (m/\bum(ul|la)l2\b/ and (s/\.2s/.4s/g or 1)) or
+ (m/\bst[1-4]\s+{[^}]+}\[/ and (s/\.[24]d/.s/g or 1));
+
+ s/\.[124]([sd])\[/.$1\[/;
+ s/w#x([0-9]+)/w$1/g;
+
+ print $_,"\n";
+}
+close STDOUT;
diff --git a/arch/arm64/crypto/poly1305-core.S_shipped b/arch/arm64/crypto/poly1305-core.S_shipped
new file mode 100644
index 000000000000..8d1c4e420ccd
--- /dev/null
+++ b/arch/arm64/crypto/poly1305-core.S_shipped
@@ -0,0 +1,835 @@
+#ifndef __KERNEL__
+# include "arm_arch.h"
+.extern OPENSSL_armcap_P
+#endif
+
+.text
+
+// forward "declarations" are required for Apple
+.globl poly1305_blocks
+.globl poly1305_emit
+
+.globl poly1305_init
+.type poly1305_init,%function
+.align 5
+poly1305_init:
+ cmp x1,xzr
+ stp xzr,xzr,[x0] // zero hash value
+ stp xzr,xzr,[x0,#16] // [along with is_base2_26]
+
+ csel x0,xzr,x0,eq
+ b.eq .Lno_key
+
+#ifndef __KERNEL__
+ adrp x17,OPENSSL_armcap_P
+ ldr w17,[x17,#:lo12:OPENSSL_armcap_P]
+#endif
+
+ ldp x7,x8,[x1] // load key
+ mov x9,#0xfffffffc0fffffff
+ movk x9,#0x0fff,lsl#48
+#ifdef __AARCH64EB__
+ rev x7,x7 // flip bytes
+ rev x8,x8
+#endif
+ and x7,x7,x9 // &=0ffffffc0fffffff
+ and x9,x9,#-4
+ and x8,x8,x9 // &=0ffffffc0ffffffc
+ mov w9,#-1
+ stp x7,x8,[x0,#32] // save key value
+ str w9,[x0,#48] // impossible key power value
+
+#ifndef __KERNEL__
+ tst w17,#ARMV7_NEON
+
+ adr x12,.Lpoly1305_blocks
+ adr x7,.Lpoly1305_blocks_neon
+ adr x13,.Lpoly1305_emit
+
+ csel x12,x12,x7,eq
+
+# ifdef __ILP32__
+ stp w12,w13,[x2]
+# else
+ stp x12,x13,[x2]
+# endif
+#endif
+ mov x0,#1
+.Lno_key:
+ ret
+.size poly1305_init,.-poly1305_init
+
+.type poly1305_blocks,%function
+.align 5
+poly1305_blocks:
+.Lpoly1305_blocks:
+ ands x2,x2,#-16
+ b.eq .Lno_data
+
+ ldp x4,x5,[x0] // load hash value
+ ldp x6,x17,[x0,#16] // [along with is_base2_26]
+ ldp x7,x8,[x0,#32] // load key value
+
+#ifdef __AARCH64EB__
+ lsr x12,x4,#32
+ mov w13,w4
+ lsr x14,x5,#32
+ mov w15,w5
+ lsr x16,x6,#32
+#else
+ mov w12,w4
+ lsr x13,x4,#32
+ mov w14,w5
+ lsr x15,x5,#32
+ mov w16,w6
+#endif
+
+ add x12,x12,x13,lsl#26 // base 2^26 -> base 2^64
+ lsr x13,x14,#12
+ adds x12,x12,x14,lsl#52
+ add x13,x13,x15,lsl#14
+ adc x13,x13,xzr
+ lsr x14,x16,#24
+ adds x13,x13,x16,lsl#40
+ adc x14,x14,xzr
+
+ cmp x17,#0 // is_base2_26?
+ add x9,x8,x8,lsr#2 // s1 = r1 + (r1 >> 2)
+ csel x4,x4,x12,eq // choose between radixes
+ csel x5,x5,x13,eq
+ csel x6,x6,x14,eq
+
+.Loop:
+ ldp x10,x11,[x1],#16 // load input
+ sub x2,x2,#16
+#ifdef __AARCH64EB__
+ rev x10,x10
+ rev x11,x11
+#endif
+ adds x4,x4,x10 // accumulate input
+ adcs x5,x5,x11
+
+ mul x12,x4,x7 // h0*r0
+ adc x6,x6,x3
+ umulh x13,x4,x7
+
+ mul x10,x5,x9 // h1*5*r1
+ umulh x11,x5,x9
+
+ adds x12,x12,x10
+ mul x10,x4,x8 // h0*r1
+ adc x13,x13,x11
+ umulh x14,x4,x8
+
+ adds x13,x13,x10
+ mul x10,x5,x7 // h1*r0
+ adc x14,x14,xzr
+ umulh x11,x5,x7
+
+ adds x13,x13,x10
+ mul x10,x6,x9 // h2*5*r1
+ adc x14,x14,x11
+ mul x11,x6,x7 // h2*r0
+
+ adds x13,x13,x10
+ adc x14,x14,x11
+
+ and x10,x14,#-4 // final reduction
+ and x6,x14,#3
+ add x10,x10,x14,lsr#2
+ adds x4,x12,x10
+ adcs x5,x13,xzr
+ adc x6,x6,xzr
+
+ cbnz x2,.Loop
+
+ stp x4,x5,[x0] // store hash value
+ stp x6,xzr,[x0,#16] // [and clear is_base2_26]
+
+.Lno_data:
+ ret
+.size poly1305_blocks,.-poly1305_blocks
+
+.type poly1305_emit,%function
+.align 5
+poly1305_emit:
+.Lpoly1305_emit:
+ ldp x4,x5,[x0] // load hash base 2^64
+ ldp x6,x7,[x0,#16] // [along with is_base2_26]
+ ldp x10,x11,[x2] // load nonce
+
+#ifdef __AARCH64EB__
+ lsr x12,x4,#32
+ mov w13,w4
+ lsr x14,x5,#32
+ mov w15,w5
+ lsr x16,x6,#32
+#else
+ mov w12,w4
+ lsr x13,x4,#32
+ mov w14,w5
+ lsr x15,x5,#32
+ mov w16,w6
+#endif
+
+ add x12,x12,x13,lsl#26 // base 2^26 -> base 2^64
+ lsr x13,x14,#12
+ adds x12,x12,x14,lsl#52
+ add x13,x13,x15,lsl#14
+ adc x13,x13,xzr
+ lsr x14,x16,#24
+ adds x13,x13,x16,lsl#40
+ adc x14,x14,xzr
+
+ cmp x7,#0 // is_base2_26?
+ csel x4,x4,x12,eq // choose between radixes
+ csel x5,x5,x13,eq
+ csel x6,x6,x14,eq
+
+ adds x12,x4,#5 // compare to modulus
+ adcs x13,x5,xzr
+ adc x14,x6,xzr
+
+ tst x14,#-4 // see if it's carried/borrowed
+
+ csel x4,x4,x12,eq
+ csel x5,x5,x13,eq
+
+#ifdef __AARCH64EB__
+ ror x10,x10,#32 // flip nonce words
+ ror x11,x11,#32
+#endif
+ adds x4,x4,x10 // accumulate nonce
+ adc x5,x5,x11
+#ifdef __AARCH64EB__
+ rev x4,x4 // flip output bytes
+ rev x5,x5
+#endif
+ stp x4,x5,[x1] // write result
+
+ ret
+.size poly1305_emit,.-poly1305_emit
+.type poly1305_mult,%function
+.align 5
+poly1305_mult:
+ mul x12,x4,x7 // h0*r0
+ umulh x13,x4,x7
+
+ mul x10,x5,x9 // h1*5*r1
+ umulh x11,x5,x9
+
+ adds x12,x12,x10
+ mul x10,x4,x8 // h0*r1
+ adc x13,x13,x11
+ umulh x14,x4,x8
+
+ adds x13,x13,x10
+ mul x10,x5,x7 // h1*r0
+ adc x14,x14,xzr
+ umulh x11,x5,x7
+
+ adds x13,x13,x10
+ mul x10,x6,x9 // h2*5*r1
+ adc x14,x14,x11
+ mul x11,x6,x7 // h2*r0
+
+ adds x13,x13,x10
+ adc x14,x14,x11
+
+ and x10,x14,#-4 // final reduction
+ and x6,x14,#3
+ add x10,x10,x14,lsr#2
+ adds x4,x12,x10
+ adcs x5,x13,xzr
+ adc x6,x6,xzr
+
+ ret
+.size poly1305_mult,.-poly1305_mult
+
+.type poly1305_splat,%function
+.align 4
+poly1305_splat:
+ and x12,x4,#0x03ffffff // base 2^64 -> base 2^26
+ ubfx x13,x4,#26,#26
+ extr x14,x5,x4,#52
+ and x14,x14,#0x03ffffff
+ ubfx x15,x5,#14,#26
+ extr x16,x6,x5,#40
+
+ str w12,[x0,#16*0] // r0
+ add w12,w13,w13,lsl#2 // r1*5
+ str w13,[x0,#16*1] // r1
+ add w13,w14,w14,lsl#2 // r2*5
+ str w12,[x0,#16*2] // s1
+ str w14,[x0,#16*3] // r2
+ add w14,w15,w15,lsl#2 // r3*5
+ str w13,[x0,#16*4] // s2
+ str w15,[x0,#16*5] // r3
+ add w15,w16,w16,lsl#2 // r4*5
+ str w14,[x0,#16*6] // s3
+ str w16,[x0,#16*7] // r4
+ str w15,[x0,#16*8] // s4
+
+ ret
+.size poly1305_splat,.-poly1305_splat
+
+#ifdef __KERNEL__
+.globl poly1305_blocks_neon
+#endif
+.type poly1305_blocks_neon,%function
+.align 5
+poly1305_blocks_neon:
+.Lpoly1305_blocks_neon:
+ ldr x17,[x0,#24]
+ cmp x2,#128
+ b.lo .Lpoly1305_blocks
+
+ .inst 0xd503233f // paciasp
+ stp x29,x30,[sp,#-80]!
+ add x29,sp,#0
+
+ stp d8,d9,[sp,#16] // meet ABI requirements
+ stp d10,d11,[sp,#32]
+ stp d12,d13,[sp,#48]
+ stp d14,d15,[sp,#64]
+
+ cbz x17,.Lbase2_64_neon
+
+ ldp w10,w11,[x0] // load hash value base 2^26
+ ldp w12,w13,[x0,#8]
+ ldr w14,[x0,#16]
+
+ tst x2,#31
+ b.eq .Leven_neon
+
+ ldp x7,x8,[x0,#32] // load key value
+
+ add x4,x10,x11,lsl#26 // base 2^26 -> base 2^64
+ lsr x5,x12,#12
+ adds x4,x4,x12,lsl#52
+ add x5,x5,x13,lsl#14
+ adc x5,x5,xzr
+ lsr x6,x14,#24
+ adds x5,x5,x14,lsl#40
+ adc x14,x6,xzr // can be partially reduced...
+
+ ldp x12,x13,[x1],#16 // load input
+ sub x2,x2,#16
+ add x9,x8,x8,lsr#2 // s1 = r1 + (r1 >> 2)
+
+#ifdef __AARCH64EB__
+ rev x12,x12
+ rev x13,x13
+#endif
+ adds x4,x4,x12 // accumulate input
+ adcs x5,x5,x13
+ adc x6,x6,x3
+
+ bl poly1305_mult
+
+ and x10,x4,#0x03ffffff // base 2^64 -> base 2^26
+ ubfx x11,x4,#26,#26
+ extr x12,x5,x4,#52
+ and x12,x12,#0x03ffffff
+ ubfx x13,x5,#14,#26
+ extr x14,x6,x5,#40
+
+ b .Leven_neon
+
+.align 4
+.Lbase2_64_neon:
+ ldp x7,x8,[x0,#32] // load key value
+
+ ldp x4,x5,[x0] // load hash value base 2^64
+ ldr x6,[x0,#16]
+
+ tst x2,#31
+ b.eq .Linit_neon
+
+ ldp x12,x13,[x1],#16 // load input
+ sub x2,x2,#16
+ add x9,x8,x8,lsr#2 // s1 = r1 + (r1 >> 2)
+#ifdef __AARCH64EB__
+ rev x12,x12
+ rev x13,x13
+#endif
+ adds x4,x4,x12 // accumulate input
+ adcs x5,x5,x13
+ adc x6,x6,x3
+
+ bl poly1305_mult
+
+.Linit_neon:
+ ldr w17,[x0,#48] // first table element
+ and x10,x4,#0x03ffffff // base 2^64 -> base 2^26
+ ubfx x11,x4,#26,#26
+ extr x12,x5,x4,#52
+ and x12,x12,#0x03ffffff
+ ubfx x13,x5,#14,#26
+ extr x14,x6,x5,#40
+
+ cmp w17,#-1 // is value impossible?
+ b.ne .Leven_neon
+
+ fmov d24,x10
+ fmov d25,x11
+ fmov d26,x12
+ fmov d27,x13
+ fmov d28,x14
+
+ ////////////////////////////////// initialize r^n table
+ mov x4,x7 // r^1
+ add x9,x8,x8,lsr#2 // s1 = r1 + (r1 >> 2)
+ mov x5,x8
+ mov x6,xzr
+ add x0,x0,#48+12
+ bl poly1305_splat
+
+ bl poly1305_mult // r^2
+ sub x0,x0,#4
+ bl poly1305_splat
+
+ bl poly1305_mult // r^3
+ sub x0,x0,#4
+ bl poly1305_splat
+
+ bl poly1305_mult // r^4
+ sub x0,x0,#4
+ bl poly1305_splat
+ sub x0,x0,#48 // restore original x0
+ b .Ldo_neon
+
+.align 4
+.Leven_neon:
+ fmov d24,x10
+ fmov d25,x11
+ fmov d26,x12
+ fmov d27,x13
+ fmov d28,x14
+
+.Ldo_neon:
+ ldp x8,x12,[x1,#32] // inp[2:3]
+ subs x2,x2,#64
+ ldp x9,x13,[x1,#48]
+ add x16,x1,#96
+ adr x17,.Lzeros
+
+ lsl x3,x3,#24
+ add x15,x0,#48
+
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ and x5,x9,#0x03ffffff
+ ubfx x6,x8,#26,#26
+ ubfx x7,x9,#26,#26
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+ extr x8,x12,x8,#52
+ extr x9,x13,x9,#52
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ fmov d14,x4
+ and x8,x8,#0x03ffffff
+ and x9,x9,#0x03ffffff
+ ubfx x10,x12,#14,#26
+ ubfx x11,x13,#14,#26
+ add x12,x3,x12,lsr#40
+ add x13,x3,x13,lsr#40
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ fmov d15,x6
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ fmov d16,x8
+ fmov d17,x10
+ fmov d18,x12
+
+ ldp x8,x12,[x1],#16 // inp[0:1]
+ ldp x9,x13,[x1],#48
+
+ ld1 {v0.4s,v1.4s,v2.4s,v3.4s},[x15],#64
+ ld1 {v4.4s,v5.4s,v6.4s,v7.4s},[x15],#64
+ ld1 {v8.4s},[x15]
+
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ and x5,x9,#0x03ffffff
+ ubfx x6,x8,#26,#26
+ ubfx x7,x9,#26,#26
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+ extr x8,x12,x8,#52
+ extr x9,x13,x9,#52
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ fmov d9,x4
+ and x8,x8,#0x03ffffff
+ and x9,x9,#0x03ffffff
+ ubfx x10,x12,#14,#26
+ ubfx x11,x13,#14,#26
+ add x12,x3,x12,lsr#40
+ add x13,x3,x13,lsr#40
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ fmov d10,x6
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ movi v31.2d,#-1
+ fmov d11,x8
+ fmov d12,x10
+ fmov d13,x12
+ ushr v31.2d,v31.2d,#38
+
+ b.ls .Lskip_loop
+
+.align 4
+.Loop_neon:
+ ////////////////////////////////////////////////////////////////
+ // ((inp[0]*r^4+inp[2]*r^2+inp[4])*r^4+inp[6]*r^2
+ // ((inp[1]*r^4+inp[3]*r^2+inp[5])*r^3+inp[7]*r
+ // ___________________/
+ // ((inp[0]*r^4+inp[2]*r^2+inp[4])*r^4+inp[6]*r^2+inp[8])*r^2
+ // ((inp[1]*r^4+inp[3]*r^2+inp[5])*r^4+inp[7]*r^2+inp[9])*r
+ // ___________________/ ____________________/
+ //
+ // Note that we start with inp[2:3]*r^2. This is because it
+ // doesn't depend on reduction in previous iteration.
+ ////////////////////////////////////////////////////////////////
+ // d4 = h0*r4 + h1*r3 + h2*r2 + h3*r1 + h4*r0
+ // d3 = h0*r3 + h1*r2 + h2*r1 + h3*r0 + h4*5*r4
+ // d2 = h0*r2 + h1*r1 + h2*r0 + h3*5*r4 + h4*5*r3
+ // d1 = h0*r1 + h1*r0 + h2*5*r4 + h3*5*r3 + h4*5*r2
+ // d0 = h0*r0 + h1*5*r4 + h2*5*r3 + h3*5*r2 + h4*5*r1
+
+ subs x2,x2,#64
+ umull v23.2d,v14.2s,v7.s[2]
+ csel x16,x17,x16,lo
+ umull v22.2d,v14.2s,v5.s[2]
+ umull v21.2d,v14.2s,v3.s[2]
+ ldp x8,x12,[x16],#16 // inp[2:3] (or zero)
+ umull v20.2d,v14.2s,v1.s[2]
+ ldp x9,x13,[x16],#48
+ umull v19.2d,v14.2s,v0.s[2]
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+
+ umlal v23.2d,v15.2s,v5.s[2]
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ umlal v22.2d,v15.2s,v3.s[2]
+ and x5,x9,#0x03ffffff
+ umlal v21.2d,v15.2s,v1.s[2]
+ ubfx x6,x8,#26,#26
+ umlal v20.2d,v15.2s,v0.s[2]
+ ubfx x7,x9,#26,#26
+ umlal v19.2d,v15.2s,v8.s[2]
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+
+ umlal v23.2d,v16.2s,v3.s[2]
+ extr x8,x12,x8,#52
+ umlal v22.2d,v16.2s,v1.s[2]
+ extr x9,x13,x9,#52
+ umlal v21.2d,v16.2s,v0.s[2]
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ umlal v20.2d,v16.2s,v8.s[2]
+ fmov d14,x4
+ umlal v19.2d,v16.2s,v6.s[2]
+ and x8,x8,#0x03ffffff
+
+ umlal v23.2d,v17.2s,v1.s[2]
+ and x9,x9,#0x03ffffff
+ umlal v22.2d,v17.2s,v0.s[2]
+ ubfx x10,x12,#14,#26
+ umlal v21.2d,v17.2s,v8.s[2]
+ ubfx x11,x13,#14,#26
+ umlal v20.2d,v17.2s,v6.s[2]
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ umlal v19.2d,v17.2s,v4.s[2]
+ fmov d15,x6
+
+ add v11.2s,v11.2s,v26.2s
+ add x12,x3,x12,lsr#40
+ umlal v23.2d,v18.2s,v0.s[2]
+ add x13,x3,x13,lsr#40
+ umlal v22.2d,v18.2s,v8.s[2]
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ umlal v21.2d,v18.2s,v6.s[2]
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ umlal v20.2d,v18.2s,v4.s[2]
+ fmov d16,x8
+ umlal v19.2d,v18.2s,v2.s[2]
+ fmov d17,x10
+
+ ////////////////////////////////////////////////////////////////
+ // (hash+inp[0:1])*r^4 and accumulate
+
+ add v9.2s,v9.2s,v24.2s
+ fmov d18,x12
+ umlal v22.2d,v11.2s,v1.s[0]
+ ldp x8,x12,[x1],#16 // inp[0:1]
+ umlal v19.2d,v11.2s,v6.s[0]
+ ldp x9,x13,[x1],#48
+ umlal v23.2d,v11.2s,v3.s[0]
+ umlal v20.2d,v11.2s,v8.s[0]
+ umlal v21.2d,v11.2s,v0.s[0]
+#ifdef __AARCH64EB__
+ rev x8,x8
+ rev x12,x12
+ rev x9,x9
+ rev x13,x13
+#endif
+
+ add v10.2s,v10.2s,v25.2s
+ umlal v22.2d,v9.2s,v5.s[0]
+ umlal v23.2d,v9.2s,v7.s[0]
+ and x4,x8,#0x03ffffff // base 2^64 -> base 2^26
+ umlal v21.2d,v9.2s,v3.s[0]
+ and x5,x9,#0x03ffffff
+ umlal v19.2d,v9.2s,v0.s[0]
+ ubfx x6,x8,#26,#26
+ umlal v20.2d,v9.2s,v1.s[0]
+ ubfx x7,x9,#26,#26
+
+ add v12.2s,v12.2s,v27.2s
+ add x4,x4,x5,lsl#32 // bfi x4,x5,#32,#32
+ umlal v22.2d,v10.2s,v3.s[0]
+ extr x8,x12,x8,#52
+ umlal v23.2d,v10.2s,v5.s[0]
+ extr x9,x13,x9,#52
+ umlal v19.2d,v10.2s,v8.s[0]
+ add x6,x6,x7,lsl#32 // bfi x6,x7,#32,#32
+ umlal v21.2d,v10.2s,v1.s[0]
+ fmov d9,x4
+ umlal v20.2d,v10.2s,v0.s[0]
+ and x8,x8,#0x03ffffff
+
+ add v13.2s,v13.2s,v28.2s
+ and x9,x9,#0x03ffffff
+ umlal v22.2d,v12.2s,v0.s[0]
+ ubfx x10,x12,#14,#26
+ umlal v19.2d,v12.2s,v4.s[0]
+ ubfx x11,x13,#14,#26
+ umlal v23.2d,v12.2s,v1.s[0]
+ add x8,x8,x9,lsl#32 // bfi x8,x9,#32,#32
+ umlal v20.2d,v12.2s,v6.s[0]
+ fmov d10,x6
+ umlal v21.2d,v12.2s,v8.s[0]
+ add x12,x3,x12,lsr#40
+
+ umlal v22.2d,v13.2s,v8.s[0]
+ add x13,x3,x13,lsr#40
+ umlal v19.2d,v13.2s,v2.s[0]
+ add x10,x10,x11,lsl#32 // bfi x10,x11,#32,#32
+ umlal v23.2d,v13.2s,v0.s[0]
+ add x12,x12,x13,lsl#32 // bfi x12,x13,#32,#32
+ umlal v20.2d,v13.2s,v4.s[0]
+ fmov d11,x8
+ umlal v21.2d,v13.2s,v6.s[0]
+ fmov d12,x10
+ fmov d13,x12
+
+ /////////////////////////////////////////////////////////////////
+ // lazy reduction as discussed in "NEON crypto" by D.J. Bernstein
+ // and P. Schwabe
+ //
+ // [see discussion in poly1305-armv4 module]
+
+ ushr v29.2d,v22.2d,#26
+ xtn v27.2s,v22.2d
+ ushr v30.2d,v19.2d,#26
+ and v19.16b,v19.16b,v31.16b
+ add v23.2d,v23.2d,v29.2d // h3 -> h4
+ bic v27.2s,#0xfc,lsl#24 // &=0x03ffffff
+ add v20.2d,v20.2d,v30.2d // h0 -> h1
+
+ ushr v29.2d,v23.2d,#26
+ xtn v28.2s,v23.2d
+ ushr v30.2d,v20.2d,#26
+ xtn v25.2s,v20.2d
+ bic v28.2s,#0xfc,lsl#24
+ add v21.2d,v21.2d,v30.2d // h1 -> h2
+
+ add v19.2d,v19.2d,v29.2d
+ shl v29.2d,v29.2d,#2
+ shrn v30.2s,v21.2d,#26
+ xtn v26.2s,v21.2d
+ add v19.2d,v19.2d,v29.2d // h4 -> h0
+ bic v25.2s,#0xfc,lsl#24
+ add v27.2s,v27.2s,v30.2s // h2 -> h3
+ bic v26.2s,#0xfc,lsl#24
+
+ shrn v29.2s,v19.2d,#26
+ xtn v24.2s,v19.2d
+ ushr v30.2s,v27.2s,#26
+ bic v27.2s,#0xfc,lsl#24
+ bic v24.2s,#0xfc,lsl#24
+ add v25.2s,v25.2s,v29.2s // h0 -> h1
+ add v28.2s,v28.2s,v30.2s // h3 -> h4
+
+ b.hi .Loop_neon
+
+.Lskip_loop:
+ dup v16.2d,v16.d[0]
+ add v11.2s,v11.2s,v26.2s
+
+ ////////////////////////////////////////////////////////////////
+ // multiply (inp[0:1]+hash) or inp[2:3] by r^2:r^1
+
+ adds x2,x2,#32
+ b.ne .Long_tail
+
+ dup v16.2d,v11.d[0]
+ add v14.2s,v9.2s,v24.2s
+ add v17.2s,v12.2s,v27.2s
+ add v15.2s,v10.2s,v25.2s
+ add v18.2s,v13.2s,v28.2s
+
+.Long_tail:
+ dup v14.2d,v14.d[0]
+ umull2 v19.2d,v16.4s,v6.4s
+ umull2 v22.2d,v16.4s,v1.4s
+ umull2 v23.2d,v16.4s,v3.4s
+ umull2 v21.2d,v16.4s,v0.4s
+ umull2 v20.2d,v16.4s,v8.4s
+
+ dup v15.2d,v15.d[0]
+ umlal2 v19.2d,v14.4s,v0.4s
+ umlal2 v21.2d,v14.4s,v3.4s
+ umlal2 v22.2d,v14.4s,v5.4s
+ umlal2 v23.2d,v14.4s,v7.4s
+ umlal2 v20.2d,v14.4s,v1.4s
+
+ dup v17.2d,v17.d[0]
+ umlal2 v19.2d,v15.4s,v8.4s
+ umlal2 v22.2d,v15.4s,v3.4s
+ umlal2 v21.2d,v15.4s,v1.4s
+ umlal2 v23.2d,v15.4s,v5.4s
+ umlal2 v20.2d,v15.4s,v0.4s
+
+ dup v18.2d,v18.d[0]
+ umlal2 v22.2d,v17.4s,v0.4s
+ umlal2 v23.2d,v17.4s,v1.4s
+ umlal2 v19.2d,v17.4s,v4.4s
+ umlal2 v20.2d,v17.4s,v6.4s
+ umlal2 v21.2d,v17.4s,v8.4s
+
+ umlal2 v22.2d,v18.4s,v8.4s
+ umlal2 v19.2d,v18.4s,v2.4s
+ umlal2 v23.2d,v18.4s,v0.4s
+ umlal2 v20.2d,v18.4s,v4.4s
+ umlal2 v21.2d,v18.4s,v6.4s
+
+ b.eq .Lshort_tail
+
+ ////////////////////////////////////////////////////////////////
+ // (hash+inp[0:1])*r^4:r^3 and accumulate
+
+ add v9.2s,v9.2s,v24.2s
+ umlal v22.2d,v11.2s,v1.2s
+ umlal v19.2d,v11.2s,v6.2s
+ umlal v23.2d,v11.2s,v3.2s
+ umlal v20.2d,v11.2s,v8.2s
+ umlal v21.2d,v11.2s,v0.2s
+
+ add v10.2s,v10.2s,v25.2s
+ umlal v22.2d,v9.2s,v5.2s
+ umlal v19.2d,v9.2s,v0.2s
+ umlal v23.2d,v9.2s,v7.2s
+ umlal v20.2d,v9.2s,v1.2s
+ umlal v21.2d,v9.2s,v3.2s
+
+ add v12.2s,v12.2s,v27.2s
+ umlal v22.2d,v10.2s,v3.2s
+ umlal v19.2d,v10.2s,v8.2s
+ umlal v23.2d,v10.2s,v5.2s
+ umlal v20.2d,v10.2s,v0.2s
+ umlal v21.2d,v10.2s,v1.2s
+
+ add v13.2s,v13.2s,v28.2s
+ umlal v22.2d,v12.2s,v0.2s
+ umlal v19.2d,v12.2s,v4.2s
+ umlal v23.2d,v12.2s,v1.2s
+ umlal v20.2d,v12.2s,v6.2s
+ umlal v21.2d,v12.2s,v8.2s
+
+ umlal v22.2d,v13.2s,v8.2s
+ umlal v19.2d,v13.2s,v2.2s
+ umlal v23.2d,v13.2s,v0.2s
+ umlal v20.2d,v13.2s,v4.2s
+ umlal v21.2d,v13.2s,v6.2s
+
+.Lshort_tail:
+ ////////////////////////////////////////////////////////////////
+ // horizontal add
+
+ addp v22.2d,v22.2d,v22.2d
+ ldp d8,d9,[sp,#16] // meet ABI requirements
+ addp v19.2d,v19.2d,v19.2d
+ ldp d10,d11,[sp,#32]
+ addp v23.2d,v23.2d,v23.2d
+ ldp d12,d13,[sp,#48]
+ addp v20.2d,v20.2d,v20.2d
+ ldp d14,d15,[sp,#64]
+ addp v21.2d,v21.2d,v21.2d
+ ldr x30,[sp,#8]
+ .inst 0xd50323bf // autiasp
+
+ ////////////////////////////////////////////////////////////////
+ // lazy reduction, but without narrowing
+
+ ushr v29.2d,v22.2d,#26
+ and v22.16b,v22.16b,v31.16b
+ ushr v30.2d,v19.2d,#26
+ and v19.16b,v19.16b,v31.16b
+
+ add v23.2d,v23.2d,v29.2d // h3 -> h4
+ add v20.2d,v20.2d,v30.2d // h0 -> h1
+
+ ushr v29.2d,v23.2d,#26
+ and v23.16b,v23.16b,v31.16b
+ ushr v30.2d,v20.2d,#26
+ and v20.16b,v20.16b,v31.16b
+ add v21.2d,v21.2d,v30.2d // h1 -> h2
+
+ add v19.2d,v19.2d,v29.2d
+ shl v29.2d,v29.2d,#2
+ ushr v30.2d,v21.2d,#26
+ and v21.16b,v21.16b,v31.16b
+ add v19.2d,v19.2d,v29.2d // h4 -> h0
+ add v22.2d,v22.2d,v30.2d // h2 -> h3
+
+ ushr v29.2d,v19.2d,#26
+ and v19.16b,v19.16b,v31.16b
+ ushr v30.2d,v22.2d,#26
+ and v22.16b,v22.16b,v31.16b
+ add v20.2d,v20.2d,v29.2d // h0 -> h1
+ add v23.2d,v23.2d,v30.2d // h3 -> h4
+
+ ////////////////////////////////////////////////////////////////
+ // write the result, can be partially reduced
+
+ st4 {v19.s,v20.s,v21.s,v22.s}[0],[x0],#16
+ mov x4,#1
+ st1 {v23.s}[0],[x0]
+ str x4,[x0,#8] // set is_base2_26
+
+ ldr x29,[sp],#80
+ ret
+.size poly1305_blocks_neon,.-poly1305_blocks_neon
+
+.align 5
+.Lzeros:
+.long 0,0,0,0,0,0,0,0
+.asciz "Poly1305 for ARMv8, CRYPTOGAMS by @dot-asm"
+.align 2
+#if !defined(__KERNEL__) && !defined(_WIN64)
+.comm OPENSSL_armcap_P,4,4
+.hidden OPENSSL_armcap_P
+#endif
diff --git a/arch/arm64/crypto/poly1305-glue.c b/arch/arm64/crypto/poly1305-glue.c
new file mode 100644
index 000000000000..dd843d0ee83a
--- /dev/null
+++ b/arch/arm64/crypto/poly1305-glue.c
@@ -0,0 +1,237 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * OpenSSL/Cryptogams accelerated Poly1305 transform for arm64
+ *
+ * Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
+ */
+
+#include <asm/hwcap.h>
+#include <asm/neon.h>
+#include <asm/simd.h>
+#include <asm/unaligned.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/hash.h>
+#include <crypto/internal/poly1305.h>
+#include <crypto/internal/simd.h>
+#include <linux/cpufeature.h>
+#include <linux/crypto.h>
+#include <linux/jump_label.h>
+#include <linux/module.h>
+
+asmlinkage void poly1305_init_arm64(void *state, const u8 *key);
+asmlinkage void poly1305_blocks(void *state, const u8 *src, u32 len, u32 hibit);
+asmlinkage void poly1305_blocks_neon(void *state, const u8 *src, u32 len, u32 hibit);
+asmlinkage void poly1305_emit(void *state, __le32 *digest, const u32 *nonce);
+
+static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
+
+void poly1305_init_arch(struct poly1305_desc_ctx *dctx, const u8 *key)
+{
+ poly1305_init_arm64(&dctx->h, key);
+ dctx->s[0] = get_unaligned_le32(key + 16);
+ dctx->s[1] = get_unaligned_le32(key + 20);
+ dctx->s[2] = get_unaligned_le32(key + 24);
+ dctx->s[3] = get_unaligned_le32(key + 28);
+ dctx->buflen = 0;
+}
+EXPORT_SYMBOL(poly1305_init_arch);
+
+static int neon_poly1305_init(struct shash_desc *desc)
+{
+ struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
+
+ dctx->buflen = 0;
+ dctx->rset = 0;
+ dctx->sset = false;
+
+ return 0;
+}
+
+static void neon_poly1305_blocks(struct poly1305_desc_ctx *dctx, const u8 *src,
+ u32 len, u32 hibit, bool do_neon)
+{
+ if (unlikely(!dctx->sset)) {
+ if (!dctx->rset) {
+ poly1305_init_arch(dctx, src);
+ src += POLY1305_BLOCK_SIZE;
+ len -= POLY1305_BLOCK_SIZE;
+ dctx->rset = 1;
+ }
+ if (len >= POLY1305_BLOCK_SIZE) {
+ dctx->s[0] = get_unaligned_le32(src + 0);
+ dctx->s[1] = get_unaligned_le32(src + 4);
+ dctx->s[2] = get_unaligned_le32(src + 8);
+ dctx->s[3] = get_unaligned_le32(src + 12);
+ src += POLY1305_BLOCK_SIZE;
+ len -= POLY1305_BLOCK_SIZE;
+ dctx->sset = true;
+ }
+ if (len < POLY1305_BLOCK_SIZE)
+ return;
+ }
+
+ len &= ~(POLY1305_BLOCK_SIZE - 1);
+
+ if (static_branch_likely(&have_neon) && likely(do_neon))
+ poly1305_blocks_neon(&dctx->h, src, len, hibit);
+ else
+ poly1305_blocks(&dctx->h, src, len, hibit);
+}
+
+static void neon_poly1305_do_update(struct poly1305_desc_ctx *dctx,
+ const u8 *src, u32 len, bool do_neon)
+{
+ if (unlikely(dctx->buflen)) {
+ u32 bytes = min(len, POLY1305_BLOCK_SIZE - dctx->buflen);
+
+ memcpy(dctx->buf + dctx->buflen, src, bytes);
+ src += bytes;
+ len -= bytes;
+ dctx->buflen += bytes;
+
+ if (dctx->buflen == POLY1305_BLOCK_SIZE) {
+ neon_poly1305_blocks(dctx, dctx->buf,
+ POLY1305_BLOCK_SIZE, 1, false);
+ dctx->buflen = 0;
+ }
+ }
+
+ if (likely(len >= POLY1305_BLOCK_SIZE)) {
+ neon_poly1305_blocks(dctx, src, len, 1, do_neon);
+ src += round_down(len, POLY1305_BLOCK_SIZE);
+ len %= POLY1305_BLOCK_SIZE;
+ }
+
+ if (unlikely(len)) {
+ dctx->buflen = len;
+ memcpy(dctx->buf, src, len);
+ }
+}
+
+static int neon_poly1305_update(struct shash_desc *desc,
+ const u8 *src, unsigned int srclen)
+{
+ bool do_neon = crypto_simd_usable() && srclen > 128;
+ struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
+
+ if (static_branch_likely(&have_neon) && do_neon)
+ kernel_neon_begin();
+ neon_poly1305_do_update(dctx, src, srclen, do_neon);
+ if (static_branch_likely(&have_neon) && do_neon)
+ kernel_neon_end();
+ return 0;
+}
+
+void poly1305_update_arch(struct poly1305_desc_ctx *dctx, const u8 *src,
+ unsigned int nbytes)
+{
+ if (unlikely(dctx->buflen)) {
+ u32 bytes = min(nbytes, POLY1305_BLOCK_SIZE - dctx->buflen);
+
+ memcpy(dctx->buf + dctx->buflen, src, bytes);
+ src += bytes;
+ nbytes -= bytes;
+ dctx->buflen += bytes;
+
+ if (dctx->buflen == POLY1305_BLOCK_SIZE) {
+ poly1305_blocks(&dctx->h, dctx->buf, POLY1305_BLOCK_SIZE, 1);
+ dctx->buflen = 0;
+ }
+ }
+
+ if (likely(nbytes >= POLY1305_BLOCK_SIZE)) {
+ unsigned int len = round_down(nbytes, POLY1305_BLOCK_SIZE);
+
+ if (static_branch_likely(&have_neon) && crypto_simd_usable()) {
+ kernel_neon_begin();
+ poly1305_blocks_neon(&dctx->h, src, len, 1);
+ kernel_neon_end();
+ } else {
+ poly1305_blocks(&dctx->h, src, len, 1);
+ }
+ src += len;
+ nbytes %= POLY1305_BLOCK_SIZE;
+ }
+
+ if (unlikely(nbytes)) {
+ dctx->buflen = nbytes;
+ memcpy(dctx->buf, src, nbytes);
+ }
+}
+EXPORT_SYMBOL(poly1305_update_arch);
+
+void poly1305_final_arch(struct poly1305_desc_ctx *dctx, u8 *dst)
+{
+ __le32 digest[4];
+ u64 f = 0;
+
+ if (unlikely(dctx->buflen)) {
+ dctx->buf[dctx->buflen++] = 1;
+ memset(dctx->buf + dctx->buflen, 0,
+ POLY1305_BLOCK_SIZE - dctx->buflen);
+ poly1305_blocks(&dctx->h, dctx->buf, POLY1305_BLOCK_SIZE, 0);
+ }
+
+ poly1305_emit(&dctx->h, digest, dctx->s);
+
+ /* mac = (h + s) % (2^128) */
+ f = (f >> 32) + le32_to_cpu(digest[0]);
+ put_unaligned_le32(f, dst);
+ f = (f >> 32) + le32_to_cpu(digest[1]);
+ put_unaligned_le32(f, dst + 4);
+ f = (f >> 32) + le32_to_cpu(digest[2]);
+ put_unaligned_le32(f, dst + 8);
+ f = (f >> 32) + le32_to_cpu(digest[3]);
+ put_unaligned_le32(f, dst + 12);
+
+ *dctx = (struct poly1305_desc_ctx){};
+}
+EXPORT_SYMBOL(poly1305_final_arch);
+
+static int neon_poly1305_final(struct shash_desc *desc, u8 *dst)
+{
+ struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
+
+ if (unlikely(!dctx->sset))
+ return -ENOKEY;
+
+ poly1305_final_arch(dctx, dst);
+ return 0;
+}
+
+static struct shash_alg neon_poly1305_alg = {
+ .init = neon_poly1305_init,
+ .update = neon_poly1305_update,
+ .final = neon_poly1305_final,
+ .digestsize = POLY1305_DIGEST_SIZE,
+ .descsize = sizeof(struct poly1305_desc_ctx),
+
+ .base.cra_name = "poly1305",
+ .base.cra_driver_name = "poly1305-neon",
+ .base.cra_priority = 200,
+ .base.cra_blocksize = POLY1305_BLOCK_SIZE,
+ .base.cra_module = THIS_MODULE,
+};
+
+static int __init neon_poly1305_mod_init(void)
+{
+ if (!cpu_have_named_feature(ASIMD))
+ return 0;
+
+ static_branch_enable(&have_neon);
+
+ return crypto_register_shash(&neon_poly1305_alg);
+}
+
+static void __exit neon_poly1305_mod_exit(void)
+{
+ if (cpu_have_named_feature(ASIMD))
+ crypto_unregister_shash(&neon_poly1305_alg);
+}
+
+module_init(neon_poly1305_mod_init);
+module_exit(neon_poly1305_mod_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS_CRYPTO("poly1305");
+MODULE_ALIAS_CRYPTO("poly1305-neon");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-13 05:25:01 +0300