crypto: vmx - Improved AES/XTS performance of 6-way unrolling for ppc
Improve AES/XTS performance of 6-way unrolling for PowerPC up to 17% with tcrypt. This is done by using one instruction, vpermxor, to replace xor and vsldoi. The same changes were applied to OpenSSL code and a pull request was submitted. This patch has been tested with the kernel crypto module tcrypt.ko and has passed the selftest. The patch is also tested with CONFIG_CRYPTO_MANAGER_EXTRA_TESTS enabled. Signed-off-by: Danny Tsen <dtsen@linux.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Danny Tsen
Herbert Xu
parent
65029eec5c
commit
6b36dafedd
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@ -132,11 +132,12 @@ rcon:
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.long 0x1b000000, 0x1b000000, 0x1b000000, 0x1b000000 ?rev
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.long 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c ?rev
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.long 0,0,0,0 ?asis
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.long 0x0f102132, 0x43546576, 0x8798a9ba, 0xcbdcedfe
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Lconsts:
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mflr r0
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bcl 20,31,\$+4
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mflr $ptr #vvvvv "distance between . and rcon
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addi $ptr,$ptr,-0x48
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addi $ptr,$ptr,-0x58
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mtlr r0
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blr
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.long 0
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@ -2495,6 +2496,17 @@ _aesp8_xts_encrypt6x:
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li $x70,0x70
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mtspr 256,r0
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xxlor 2, 32+$eighty7, 32+$eighty7
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vsldoi $eighty7,$tmp,$eighty7,1 # 0x010101..87
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xxlor 1, 32+$eighty7, 32+$eighty7
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# Load XOR Lconsts.
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mr $x70, r6
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bl Lconsts
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lxvw4x 0, $x40, r6 # load XOR contents
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mr r6, $x70
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li $x70,0x70
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subi $rounds,$rounds,3 # -4 in total
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lvx $rndkey0,$x00,$key1 # load key schedule
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@ -2537,69 +2549,77 @@ Load_xts_enc_key:
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?vperm v31,v31,$twk5,$keyperm
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lvx v25,$x10,$key_ # pre-load round[2]
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# Switch to use the following codes with 0x010101..87 to generate tweak.
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# eighty7 = 0x010101..87
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# vsrab tmp, tweak, seven # next tweak value, right shift 7 bits
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# vand tmp, tmp, eighty7 # last byte with carry
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# vaddubm tweak, tweak, tweak # left shift 1 bit (x2)
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# xxlor vsx, 0, 0
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# vpermxor tweak, tweak, tmp, vsx
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vperm $in0,$inout,$inptail,$inpperm
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subi $inp,$inp,31 # undo "caller"
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vxor $twk0,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vand $tmp,$tmp,$eighty7
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vxor $out0,$in0,$twk0
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in1, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in1
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lvx_u $in1,$x10,$inp
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vxor $twk1,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in1,$in1,$in1,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out1,$in1,$twk1
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in2, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in2
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lvx_u $in2,$x20,$inp
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andi. $taillen,$len,15
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vxor $twk2,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in2,$in2,$in2,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out2,$in2,$twk2
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in3, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in3
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lvx_u $in3,$x30,$inp
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sub $len,$len,$taillen
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vxor $twk3,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in3,$in3,$in3,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out3,$in3,$twk3
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in4, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in4
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lvx_u $in4,$x40,$inp
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subi $len,$len,0x60
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vxor $twk4,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in4,$in4,$in4,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out4,$in4,$twk4
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in5, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in5
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lvx_u $in5,$x50,$inp
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addi $inp,$inp,0x60
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vxor $twk5,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in5,$in5,$in5,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out5,$in5,$twk5
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in0, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in0
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vxor v31,v31,$rndkey0
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mtctr $rounds
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@ -2625,6 +2645,8 @@ Loop_xts_enc6x:
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lvx v25,$x10,$key_ # round[4]
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bdnz Loop_xts_enc6x
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xxlor 32+$eighty7, 1, 1 # 0x010101..87
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subic $len,$len,96 # $len-=96
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vxor $in0,$twk0,v31 # xor with last round key
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vcipher $out0,$out0,v24
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@ -2634,7 +2656,6 @@ Loop_xts_enc6x:
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vaddubm $tweak,$tweak,$tweak
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vcipher $out2,$out2,v24
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vcipher $out3,$out3,v24
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vsldoi $tmp,$tmp,$tmp,15
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vcipher $out4,$out4,v24
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vcipher $out5,$out5,v24
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@ -2642,7 +2663,8 @@ Loop_xts_enc6x:
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vand $tmp,$tmp,$eighty7
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vcipher $out0,$out0,v25
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vcipher $out1,$out1,v25
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in1, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in1
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vcipher $out2,$out2,v25
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vcipher $out3,$out3,v25
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vxor $in1,$twk1,v31
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@ -2653,13 +2675,13 @@ Loop_xts_enc6x:
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and r0,r0,$len
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vcipher $out0,$out0,v26
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vcipher $out1,$out1,v26
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vand $tmp,$tmp,$eighty7
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vcipher $out2,$out2,v26
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vcipher $out3,$out3,v26
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in2, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in2
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vcipher $out4,$out4,v26
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vcipher $out5,$out5,v26
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@ -2673,7 +2695,6 @@ Loop_xts_enc6x:
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vaddubm $tweak,$tweak,$tweak
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vcipher $out0,$out0,v27
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vcipher $out1,$out1,v27
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vsldoi $tmp,$tmp,$tmp,15
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vcipher $out2,$out2,v27
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vcipher $out3,$out3,v27
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vand $tmp,$tmp,$eighty7
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@ -2681,7 +2702,8 @@ Loop_xts_enc6x:
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vcipher $out5,$out5,v27
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addi $key_,$sp,$FRAME+15 # rewind $key_
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in3, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in3
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vcipher $out0,$out0,v28
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vcipher $out1,$out1,v28
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vxor $in3,$twk3,v31
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@ -2690,7 +2712,6 @@ Loop_xts_enc6x:
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vcipher $out2,$out2,v28
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vcipher $out3,$out3,v28
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vcipher $out4,$out4,v28
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vcipher $out5,$out5,v28
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lvx v24,$x00,$key_ # re-pre-load round[1]
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@ -2698,7 +2719,8 @@ Loop_xts_enc6x:
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vcipher $out0,$out0,v29
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vcipher $out1,$out1,v29
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in4, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in4
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vcipher $out2,$out2,v29
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vcipher $out3,$out3,v29
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vxor $in4,$twk4,v31
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@ -2708,14 +2730,14 @@ Loop_xts_enc6x:
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vcipher $out5,$out5,v29
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lvx v25,$x10,$key_ # re-pre-load round[2]
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vcipher $out0,$out0,v30
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vcipher $out1,$out1,v30
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vand $tmp,$tmp,$eighty7
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vcipher $out2,$out2,v30
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vcipher $out3,$out3,v30
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in5, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in5
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vcipher $out4,$out4,v30
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vcipher $out5,$out5,v30
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vxor $in5,$twk5,v31
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@ -2725,7 +2747,6 @@ Loop_xts_enc6x:
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vcipherlast $out0,$out0,$in0
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lvx_u $in0,$x00,$inp # load next input block
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vcipherlast $out1,$out1,$in1
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lvx_u $in1,$x10,$inp
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vcipherlast $out2,$out2,$in2
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@ -2738,7 +2759,10 @@ Loop_xts_enc6x:
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vcipherlast $out4,$out4,$in4
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le?vperm $in2,$in2,$in2,$leperm
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lvx_u $in4,$x40,$inp
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vxor $tweak,$tweak,$tmp
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xxlor 10, 32+$in0, 32+$in0
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xxlor 32+$in0, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in0
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xxlor 32+$in0, 10, 10
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vcipherlast $tmp,$out5,$in5 # last block might be needed
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# in stealing mode
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le?vperm $in3,$in3,$in3,$leperm
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@ -2771,6 +2795,8 @@ Loop_xts_enc6x:
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mtctr $rounds
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beq Loop_xts_enc6x # did $len-=96 borrow?
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xxlor 32+$eighty7, 2, 2 # 0x010101..87
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addic. $len,$len,0x60
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beq Lxts_enc6x_zero
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cmpwi $len,0x20
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@ -3147,6 +3173,17 @@ _aesp8_xts_decrypt6x:
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li $x70,0x70
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mtspr 256,r0
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xxlor 2, 32+$eighty7, 32+$eighty7
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vsldoi $eighty7,$tmp,$eighty7,1 # 0x010101..87
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xxlor 1, 32+$eighty7, 32+$eighty7
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# Load XOR Lconsts.
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mr $x70, r6
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bl Lconsts
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lxvw4x 0, $x40, r6 # load XOR contents
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mr r6, $x70
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li $x70,0x70
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subi $rounds,$rounds,3 # -4 in total
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lvx $rndkey0,$x00,$key1 # load key schedule
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@ -3194,64 +3231,64 @@ Load_xts_dec_key:
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vxor $twk0,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vand $tmp,$tmp,$eighty7
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vxor $out0,$in0,$twk0
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in1, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in1
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lvx_u $in1,$x10,$inp
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vxor $twk1,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in1,$in1,$in1,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out1,$in1,$twk1
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in2, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in2
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lvx_u $in2,$x20,$inp
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andi. $taillen,$len,15
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vxor $twk2,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in2,$in2,$in2,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out2,$in2,$twk2
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in3, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in3
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lvx_u $in3,$x30,$inp
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sub $len,$len,$taillen
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vxor $twk3,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in3,$in3,$in3,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out3,$in3,$twk3
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in4, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in4
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lvx_u $in4,$x40,$inp
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subi $len,$len,0x60
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vxor $twk4,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in4,$in4,$in4,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out4,$in4,$twk4
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in5, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in5
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lvx_u $in5,$x50,$inp
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addi $inp,$inp,0x60
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vxor $twk5,$tweak,$rndkey0
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vsrab $tmp,$tweak,$seven # next tweak value
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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le?vperm $in5,$in5,$in5,$leperm
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vand $tmp,$tmp,$eighty7
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vxor $out5,$in5,$twk5
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in0, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in0
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vxor v31,v31,$rndkey0
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mtctr $rounds
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@ -3277,6 +3314,8 @@ Loop_xts_dec6x:
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lvx v25,$x10,$key_ # round[4]
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bdnz Loop_xts_dec6x
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xxlor 32+$eighty7, 1, 1 # 0x010101..87
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subic $len,$len,96 # $len-=96
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vxor $in0,$twk0,v31 # xor with last round key
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vncipher $out0,$out0,v24
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@ -3286,7 +3325,6 @@ Loop_xts_dec6x:
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vaddubm $tweak,$tweak,$tweak
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vncipher $out2,$out2,v24
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vncipher $out3,$out3,v24
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vsldoi $tmp,$tmp,$tmp,15
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vncipher $out4,$out4,v24
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vncipher $out5,$out5,v24
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@ -3294,7 +3332,8 @@ Loop_xts_dec6x:
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vand $tmp,$tmp,$eighty7
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vncipher $out0,$out0,v25
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vncipher $out1,$out1,v25
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in1, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in1
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vncipher $out2,$out2,v25
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vncipher $out3,$out3,v25
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vxor $in1,$twk1,v31
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@ -3305,13 +3344,13 @@ Loop_xts_dec6x:
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and r0,r0,$len
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vaddubm $tweak,$tweak,$tweak
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vsldoi $tmp,$tmp,$tmp,15
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vncipher $out0,$out0,v26
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vncipher $out1,$out1,v26
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vand $tmp,$tmp,$eighty7
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vncipher $out2,$out2,v26
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vncipher $out3,$out3,v26
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vxor $tweak,$tweak,$tmp
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xxlor 32+$in2, 0, 0
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vpermxor $tweak, $tweak, $tmp, $in2
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vncipher $out4,$out4,v26
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||||
vncipher $out5,$out5,v26
|
||||
|
||||
|
|
@ -3325,7 +3364,6 @@ Loop_xts_dec6x:
|
|||
vaddubm $tweak,$tweak,$tweak
|
||||
vncipher $out0,$out0,v27
|
||||
vncipher $out1,$out1,v27
|
||||
vsldoi $tmp,$tmp,$tmp,15
|
||||
vncipher $out2,$out2,v27
|
||||
vncipher $out3,$out3,v27
|
||||
vand $tmp,$tmp,$eighty7
|
||||
|
|
@ -3333,7 +3371,8 @@ Loop_xts_dec6x:
|
|||
vncipher $out5,$out5,v27
|
||||
|
||||
addi $key_,$sp,$FRAME+15 # rewind $key_
|
||||
vxor $tweak,$tweak,$tmp
|
||||
xxlor 32+$in3, 0, 0
|
||||
vpermxor $tweak, $tweak, $tmp, $in3
|
||||
vncipher $out0,$out0,v28
|
||||
vncipher $out1,$out1,v28
|
||||
vxor $in3,$twk3,v31
|
||||
|
|
@ -3342,7 +3381,6 @@ Loop_xts_dec6x:
|
|||
vncipher $out2,$out2,v28
|
||||
vncipher $out3,$out3,v28
|
||||
vaddubm $tweak,$tweak,$tweak
|
||||
vsldoi $tmp,$tmp,$tmp,15
|
||||
vncipher $out4,$out4,v28
|
||||
vncipher $out5,$out5,v28
|
||||
lvx v24,$x00,$key_ # re-pre-load round[1]
|
||||
|
|
@ -3350,7 +3388,8 @@ Loop_xts_dec6x:
|
|||
|
||||
vncipher $out0,$out0,v29
|
||||
vncipher $out1,$out1,v29
|
||||
vxor $tweak,$tweak,$tmp
|
||||
xxlor 32+$in4, 0, 0
|
||||
vpermxor $tweak, $tweak, $tmp, $in4
|
||||
vncipher $out2,$out2,v29
|
||||
vncipher $out3,$out3,v29
|
||||
vxor $in4,$twk4,v31
|
||||
|
|
@ -3360,14 +3399,14 @@ Loop_xts_dec6x:
|
|||
vncipher $out5,$out5,v29
|
||||
lvx v25,$x10,$key_ # re-pre-load round[2]
|
||||
vaddubm $tweak,$tweak,$tweak
|
||||
vsldoi $tmp,$tmp,$tmp,15
|
||||
|
||||
vncipher $out0,$out0,v30
|
||||
vncipher $out1,$out1,v30
|
||||
vand $tmp,$tmp,$eighty7
|
||||
vncipher $out2,$out2,v30
|
||||
vncipher $out3,$out3,v30
|
||||
vxor $tweak,$tweak,$tmp
|
||||
xxlor 32+$in5, 0, 0
|
||||
vpermxor $tweak, $tweak, $tmp, $in5
|
||||
vncipher $out4,$out4,v30
|
||||
vncipher $out5,$out5,v30
|
||||
vxor $in5,$twk5,v31
|
||||
|
|
@ -3377,7 +3416,6 @@ Loop_xts_dec6x:
|
|||
vncipherlast $out0,$out0,$in0
|
||||
lvx_u $in0,$x00,$inp # load next input block
|
||||
vaddubm $tweak,$tweak,$tweak
|
||||
vsldoi $tmp,$tmp,$tmp,15
|
||||
vncipherlast $out1,$out1,$in1
|
||||
lvx_u $in1,$x10,$inp
|
||||
vncipherlast $out2,$out2,$in2
|
||||
|
|
@ -3390,7 +3428,10 @@ Loop_xts_dec6x:
|
|||
vncipherlast $out4,$out4,$in4
|
||||
le?vperm $in2,$in2,$in2,$leperm
|
||||
lvx_u $in4,$x40,$inp
|
||||
vxor $tweak,$tweak,$tmp
|
||||
xxlor 10, 32+$in0, 32+$in0
|
||||
xxlor 32+$in0, 0, 0
|
||||
vpermxor $tweak, $tweak, $tmp, $in0
|
||||
xxlor 32+$in0, 10, 10
|
||||
vncipherlast $out5,$out5,$in5
|
||||
le?vperm $in3,$in3,$in3,$leperm
|
||||
lvx_u $in5,$x50,$inp
|
||||
|
|
@ -3421,6 +3462,8 @@ Loop_xts_dec6x:
|
|||
mtctr $rounds
|
||||
beq Loop_xts_dec6x # did $len-=96 borrow?
|
||||
|
||||
xxlor 32+$eighty7, 2, 2 # 0x010101..87
|
||||
|
||||
addic. $len,$len,0x60
|
||||
beq Lxts_dec6x_zero
|
||||
cmpwi $len,0x20
|
||||
|
|
|
|||
Loading…
Reference in New Issue