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authorDavid S. Miller <davem@davemloft.net>2012-08-30 08:11:01 -0700
committerDavid S. Miller <davem@davemloft.net>2012-08-30 08:11:01 -0700
commit301013159e4cdce44700418c8fd5eadb270e2d3a (patch)
treeaf377685fb89ddc20c751722d5bd68489db425f6 /arch/sparc/crypto
parent03d168ad122d6e622ad00490211704c4f2994976 (diff)
downloadlinux-301013159e4cdce44700418c8fd5eadb270e2d3a.tar.gz
sparc64: Unroll ECB decryption loops in AES driver.
Before: testing speed of ecb(aes) decryption test 0 (128 bit key, 16 byte blocks): 1 operation in 223 cycles (16 bytes) test 1 (128 bit key, 64 byte blocks): 1 operation in 230 cycles (64 bytes) test 2 (128 bit key, 256 byte blocks): 1 operation in 325 cycles (256 bytes) test 3 (128 bit key, 1024 byte blocks): 1 operation in 719 cycles (1024 bytes) test 4 (128 bit key, 8192 byte blocks): 1 operation in 4266 cycles (8192 bytes) test 5 (192 bit key, 16 byte blocks): 1 operation in 211 cycles (16 bytes) test 6 (192 bit key, 64 byte blocks): 1 operation in 234 cycles (64 bytes) test 7 (192 bit key, 256 byte blocks): 1 operation in 353 cycles (256 bytes) test 8 (192 bit key, 1024 byte blocks): 1 operation in 808 cycles (1024 bytes) test 9 (192 bit key, 8192 byte blocks): 1 operation in 5344 cycles (8192 bytes) test 10 (256 bit key, 16 byte blocks): 1 operation in 214 cycles (16 bytes) test 11 (256 bit key, 64 byte blocks): 1 operation in 243 cycles (64 bytes) test 12 (256 bit key, 256 byte blocks): 1 operation in 393 cycles (256 bytes) test 13 (256 bit key, 1024 byte blocks): 1 operation in 939 cycles (1024 bytes) test 14 (256 bit key, 8192 byte blocks): 1 operation in 6039 cycles (8192 bytes) After: testing speed of ecb(aes) decryption test 0 (128 bit key, 16 byte blocks): 1 operation in 226 cycles (16 bytes) test 1 (128 bit key, 64 byte blocks): 1 operation in 231 cycles (64 bytes) test 2 (128 bit key, 256 byte blocks): 1 operation in 313 cycles (256 bytes) test 3 (128 bit key, 1024 byte blocks): 1 operation in 681 cycles (1024 bytes) test 4 (128 bit key, 8192 byte blocks): 1 operation in 3964 cycles (8192 bytes) test 5 (192 bit key, 16 byte blocks): 1 operation in 205 cycles (16 bytes) test 6 (192 bit key, 64 byte blocks): 1 operation in 240 cycles (64 bytes) test 7 (192 bit key, 256 byte blocks): 1 operation in 341 cycles (256 bytes) test 8 (192 bit key, 1024 byte blocks): 1 operation in 770 cycles (1024 bytes) test 9 (192 bit key, 8192 byte blocks): 1 operation in 5050 cycles (8192 bytes) test 10 (256 bit key, 16 byte blocks): 1 operation in 216 cycles (16 bytes) test 11 (256 bit key, 64 byte blocks): 1 operation in 250 cycles (64 bytes) test 12 (256 bit key, 256 byte blocks): 1 operation in 371 cycles (256 bytes) test 13 (256 bit key, 1024 byte blocks): 1 operation in 869 cycles (1024 bytes) test 14 (256 bit key, 8192 byte blocks): 1 operation in 5494 cycles (8192 bytes) Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/crypto')
-rw-r--r--arch/sparc/crypto/aes_asm.S161
1 files changed, 143 insertions, 18 deletions
diff --git a/arch/sparc/crypto/aes_asm.S b/arch/sparc/crypto/aes_asm.S
index 33d59c66f1e2..0bd3e04ac42d 100644
--- a/arch/sparc/crypto/aes_asm.S
+++ b/arch/sparc/crypto/aes_asm.S
@@ -161,12 +161,32 @@
AES_DROUND23(KEY_BASE + 4, T0, T1, I1) \
AES_DROUND01(KEY_BASE + 6, T0, T1, I0)
+#define DECRYPT_TWO_ROUNDS_2(KEY_BASE, I0, I1, I2, I3, T0, T1, T2, T3) \
+ AES_DROUND23(KEY_BASE + 0, I0, I1, T1) \
+ AES_DROUND01(KEY_BASE + 2, I0, I1, T0) \
+ AES_DROUND23(KEY_BASE + 0, I2, I3, T3) \
+ AES_DROUND01(KEY_BASE + 2, I2, I3, T2) \
+ AES_DROUND23(KEY_BASE + 4, T0, T1, I1) \
+ AES_DROUND01(KEY_BASE + 6, T0, T1, I0) \
+ AES_DROUND23(KEY_BASE + 4, T2, T3, I3) \
+ AES_DROUND01(KEY_BASE + 6, T2, T3, I2)
+
#define DECRYPT_TWO_ROUNDS_LAST(KEY_BASE, I0, I1, T0, T1) \
AES_DROUND23(KEY_BASE + 0, I0, I1, T1) \
AES_DROUND01(KEY_BASE + 2, I0, I1, T0) \
AES_DROUND23_L(KEY_BASE + 4, T0, T1, I1) \
AES_DROUND01_L(KEY_BASE + 6, T0, T1, I0)
+#define DECRYPT_TWO_ROUNDS_LAST_2(KEY_BASE, I0, I1, I2, I3, T0, T1, T2, T3) \
+ AES_DROUND23(KEY_BASE + 0, I0, I1, T1) \
+ AES_DROUND01(KEY_BASE + 2, I0, I1, T0) \
+ AES_DROUND23(KEY_BASE + 0, I2, I3, T3) \
+ AES_DROUND01(KEY_BASE + 2, I2, I3, T2) \
+ AES_DROUND23_L(KEY_BASE + 4, T0, T1, I1) \
+ AES_DROUND01_L(KEY_BASE + 6, T0, T1, I0) \
+ AES_DROUND23_L(KEY_BASE + 4, T2, T3, I3) \
+ AES_DROUND01_L(KEY_BASE + 6, T2, T3, I2)
+
/* 10 rounds */
#define DECRYPT_128(KEY_BASE, I0, I1, T0, T1) \
DECRYPT_TWO_ROUNDS(KEY_BASE + 0, I0, I1, T0, T1) \
@@ -175,6 +195,13 @@
DECRYPT_TWO_ROUNDS(KEY_BASE + 24, I0, I1, T0, T1) \
DECRYPT_TWO_ROUNDS_LAST(KEY_BASE + 32, I0, I1, T0, T1)
+#define DECRYPT_128_2(KEY_BASE, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 0, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 8, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 16, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 24, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_LAST_2(KEY_BASE + 32, I0, I1, I2, I3, T0, T1, T2, T3)
+
/* 12 rounds */
#define DECRYPT_192(KEY_BASE, I0, I1, T0, T1) \
DECRYPT_TWO_ROUNDS(KEY_BASE + 0, I0, I1, T0, T1) \
@@ -184,6 +211,14 @@
DECRYPT_TWO_ROUNDS(KEY_BASE + 32, I0, I1, T0, T1) \
DECRYPT_TWO_ROUNDS_LAST(KEY_BASE + 40, I0, I1, T0, T1)
+#define DECRYPT_192_2(KEY_BASE, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 0, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 8, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 16, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 24, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE + 32, I0, I1, I2, I3, T0, T1, T2, T3) \
+ DECRYPT_TWO_ROUNDS_LAST_2(KEY_BASE + 40, I0, I1, I2, I3, T0, T1, T2, T3)
+
/* 14 rounds */
#define DECRYPT_256(KEY_BASE, I0, I1, T0, T1) \
DECRYPT_TWO_ROUNDS(KEY_BASE + 0, I0, I1, T0, T1) \
@@ -194,6 +229,32 @@
DECRYPT_TWO_ROUNDS(KEY_BASE + 40, I0, I1, T0, T1) \
DECRYPT_TWO_ROUNDS_LAST(KEY_BASE + 48, I0, I1, T0, T1)
+#define DECRYPT_256_TWO_ROUNDS_2(KEY_BASE, I0, I1, I2, I3, TMP_BASE) \
+ DECRYPT_TWO_ROUNDS_2(KEY_BASE, I0, I1, I2, I3, \
+ TMP_BASE + 0, TMP_BASE + 2, TMP_BASE + 4, TMP_BASE + 6)
+
+#define DECRYPT_256_2(KEY_BASE, I0, I1, I2, I3) \
+ DECRYPT_256_TWO_ROUNDS_2(KEY_BASE + 0, I0, I1, I2, I3, KEY_BASE + 48) \
+ ldd [%o0 + 0x18], %f56; \
+ ldd [%o0 + 0x10], %f58; \
+ DECRYPT_256_TWO_ROUNDS_2(KEY_BASE + 8, I0, I1, I2, I3, KEY_BASE + 0) \
+ DECRYPT_256_TWO_ROUNDS_2(KEY_BASE + 16, I0, I1, I2, I3, KEY_BASE + 0) \
+ DECRYPT_256_TWO_ROUNDS_2(KEY_BASE + 24, I0, I1, I2, I3, KEY_BASE + 0) \
+ DECRYPT_256_TWO_ROUNDS_2(KEY_BASE + 32, I0, I1, I2, I3, KEY_BASE + 0) \
+ DECRYPT_256_TWO_ROUNDS_2(KEY_BASE + 40, I0, I1, I2, I3, KEY_BASE + 0) \
+ AES_DROUND23(KEY_BASE + 48, I0, I1, KEY_BASE + 2) \
+ AES_DROUND01(KEY_BASE + 50, I0, I1, KEY_BASE + 0) \
+ AES_DROUND23(KEY_BASE + 48, I2, I3, KEY_BASE + 6) \
+ AES_DROUND01(KEY_BASE + 50, I2, I3, KEY_BASE + 4) \
+ AES_DROUND23_L(KEY_BASE + 52, KEY_BASE + 0, KEY_BASE + 2, I1) \
+ AES_DROUND01_L(KEY_BASE + 54, KEY_BASE + 0, KEY_BASE + 2, I0) \
+ ldd [%o0 + 0xd8], %f8; \
+ ldd [%o0 + 0xd0], %f10; \
+ AES_DROUND23_L(KEY_BASE + 52, KEY_BASE + 4, KEY_BASE + 6, I3) \
+ AES_DROUND01_L(KEY_BASE + 54, KEY_BASE + 4, KEY_BASE + 6, I2)
+ ldd [%o0 + 0xc8], %f12; \
+ ldd [%o0 + 0xc0], %f14;
+
.align 32
ENTRY(aes_sparc64_key_expand)
/* %o0=input_key, %o1=output_key, %o2=key_len */
@@ -1028,10 +1089,34 @@ ENDPROC(aes_sparc64_ecb_encrypt_256)
ENTRY(aes_sparc64_ecb_decrypt_128)
/* %o0=&key[key_len], %o1=input, %o2=output, %o3=len */
ldx [%o0 - 0x10], %g1
- ldx [%o0 - 0x08], %g2
+ subcc %o3, 0x10, %o3
+ be 10f
+ ldx [%o0 - 0x08], %g2
1: ldx [%o1 + 0x00], %g3
ldx [%o1 + 0x08], %g7
- add %o1, 0x10, %o1
+ ldx [%o1 + 0x10], %o4
+ ldx [%o1 + 0x18], %o5
+ xor %g1, %g3, %g3
+ xor %g2, %g7, %g7
+ MOVXTOD_G3_F4
+ MOVXTOD_G7_F6
+ xor %g1, %o4, %g3
+ xor %g2, %o5, %g7
+ MOVXTOD_G3_F60
+ MOVXTOD_G7_F62
+ DECRYPT_128_2(8, 4, 6, 60, 62, 0, 2, 56, 58)
+ std %f4, [%o2 + 0x00]
+ std %f6, [%o2 + 0x08]
+ std %f60, [%o2 + 0x10]
+ std %f62, [%o2 + 0x18]
+ sub %o3, 0x20, %o3
+ add %o1, 0x20, %o1
+ brgz,pt %o3, 1b
+ add %o2, 0x20, %o2
+ brlz,pt %o3, 11f
+ nop
+10: ldx [%o1 + 0x00], %g3
+ ldx [%o1 + 0x08], %g7
xor %g1, %g3, %g3
xor %g2, %g7, %g7
MOVXTOD_G3_F4
@@ -1039,10 +1124,7 @@ ENTRY(aes_sparc64_ecb_decrypt_128)
DECRYPT_128(8, 4, 6, 0, 2)
std %f4, [%o2 + 0x00]
std %f6, [%o2 + 0x08]
- subcc %o3, 0x10, %o3
- bne,pt %xcc, 1b
- add %o2, 0x10, %o2
- retl
+11: retl
nop
ENDPROC(aes_sparc64_ecb_decrypt_128)
@@ -1050,10 +1132,34 @@ ENDPROC(aes_sparc64_ecb_decrypt_128)
ENTRY(aes_sparc64_ecb_decrypt_192)
/* %o0=&key[key_len], %o1=input, %o2=output, %o3=len */
ldx [%o0 - 0x10], %g1
- ldx [%o0 - 0x08], %g2
+ subcc %o3, 0x10, %o3
+ be 10f
+ ldx [%o0 - 0x08], %g2
1: ldx [%o1 + 0x00], %g3
ldx [%o1 + 0x08], %g7
- add %o1, 0x10, %o1
+ ldx [%o1 + 0x10], %o4
+ ldx [%o1 + 0x18], %o5
+ xor %g1, %g3, %g3
+ xor %g2, %g7, %g7
+ MOVXTOD_G3_F4
+ MOVXTOD_G7_F6
+ xor %g1, %o4, %g3
+ xor %g2, %o5, %g7
+ MOVXTOD_G3_F60
+ MOVXTOD_G7_F62
+ DECRYPT_192_2(8, 4, 6, 60, 62, 0, 2, 56, 58)
+ std %f4, [%o2 + 0x00]
+ std %f6, [%o2 + 0x08]
+ std %f60, [%o2 + 0x10]
+ std %f62, [%o2 + 0x18]
+ sub %o3, 0x20, %o3
+ add %o1, 0x20, %o1
+ brgz,pt %o3, 1b
+ add %o2, 0x20, %o2
+ brlz,pt %o3, 11f
+ nop
+10: ldx [%o1 + 0x00], %g3
+ ldx [%o1 + 0x08], %g7
xor %g1, %g3, %g3
xor %g2, %g7, %g7
MOVXTOD_G3_F4
@@ -1061,10 +1167,7 @@ ENTRY(aes_sparc64_ecb_decrypt_192)
DECRYPT_192(8, 4, 6, 0, 2)
std %f4, [%o2 + 0x00]
std %f6, [%o2 + 0x08]
- subcc %o3, 0x10, %o3
- bne,pt %xcc, 1b
- add %o2, 0x10, %o2
- retl
+11: retl
nop
ENDPROC(aes_sparc64_ecb_decrypt_192)
@@ -1072,10 +1175,35 @@ ENDPROC(aes_sparc64_ecb_decrypt_192)
ENTRY(aes_sparc64_ecb_decrypt_256)
/* %o0=&key[key_len], %o1=input, %o2=output, %o3=len */
ldx [%o0 - 0x10], %g1
- ldx [%o0 - 0x08], %g2
+ subcc %o3, 0x10, %o3
+ be 10f
+ ldx [%o0 - 0x08], %g2
+ sub %o0, 0xf0, %o0
1: ldx [%o1 + 0x00], %g3
ldx [%o1 + 0x08], %g7
- add %o1, 0x10, %o1
+ ldx [%o1 + 0x10], %o4
+ ldx [%o1 + 0x18], %o5
+ xor %g1, %g3, %g3
+ xor %g2, %g7, %g7
+ MOVXTOD_G3_F4
+ MOVXTOD_G7_F6
+ xor %g1, %o4, %g3
+ xor %g2, %o5, %g7
+ MOVXTOD_G3_F0
+ MOVXTOD_G7_F2
+ DECRYPT_256_2(8, 4, 6, 0, 2)
+ std %f4, [%o2 + 0x00]
+ std %f6, [%o2 + 0x08]
+ std %f60, [%o2 + 0x10]
+ std %f62, [%o2 + 0x18]
+ sub %o3, 0x20, %o3
+ add %o1, 0x20, %o1
+ brgz,pt %o3, 1b
+ add %o2, 0x20, %o2
+ brlz,pt %o3, 11f
+ nop
+10: ldx [%o1 + 0x00], %g3
+ ldx [%o1 + 0x08], %g7
xor %g1, %g3, %g3
xor %g2, %g7, %g7
MOVXTOD_G3_F4
@@ -1083,10 +1211,7 @@ ENTRY(aes_sparc64_ecb_decrypt_256)
DECRYPT_256(8, 4, 6, 0, 2)
std %f4, [%o2 + 0x00]
std %f6, [%o2 + 0x08]
- subcc %o3, 0x10, %o3
- bne,pt %xcc, 1b
- add %o2, 0x10, %o2
- retl
+11: retl
nop
ENDPROC(aes_sparc64_ecb_decrypt_256)