Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-29 14:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

crypto: vmx - Improved AES/XTS performance of 6-way unrolling for ppc

Browse Source 
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 2023-08-30 09:49:11 -04:00 committed by Herbert Xu
parent 65029eec5c
commit 6b36dafedd
1 changed files with 92 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

141
drivers/crypto/vmx/aesp8-ppc.pl
View File

@ -132,11 +132,12 @@ rcon:
.long 0x1b000000, 0x1b000000, 0x1b000000, 0x1b000000 ?rev
.long 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c ?rev
.long 0,0,0,0 ?asis
.long 0x0f102132, 0x43546576, 0x8798a9ba, 0xcbdcedfe
Lconsts:
mflr r0
bcl 20,31,\$+4
mflr $ptr #vvvvv "distance between . and rcon
addi $ptr,$ptr,-0x48
addi $ptr,$ptr,-0x58
mtlr r0
blr
.long 0
@ -2495,6 +2496,17 @@ _aesp8_xts_encrypt6x:
li $x70,0x70
mtspr 256,r0
xxlor 2, 32+$eighty7, 32+$eighty7
vsldoi $eighty7,$tmp,$eighty7,1 # 0x010101..87
xxlor 1, 32+$eighty7, 32+$eighty7
# Load XOR Lconsts.
mr $x70, r6
bl Lconsts
lxvw4x 0, $x40, r6 # load XOR contents
mr r6, $x70
li $x70,0x70
subi $rounds,$rounds,3 # -4 in total
lvx $rndkey0,$x00,$key1 # load key schedule
@ -2537,69 +2549,77 @@ Load_xts_enc_key:
?vperm v31,v31,$twk5,$keyperm
lvx v25,$x10,$key_ # pre-load round[2]
# Switch to use the following codes with 0x010101..87 to generate tweak.
# eighty7 = 0x010101..87
# vsrab tmp, tweak, seven # next tweak value, right shift 7 bits
# vand tmp, tmp, eighty7 # last byte with carry
# vaddubm tweak, tweak, tweak # left shift 1 bit (x2)
# xxlor vsx, 0, 0
# vpermxor tweak, tweak, tmp, vsx
vperm $in0,$inout,$inptail,$inpperm
subi $inp,$inp,31 # undo "caller"
vxor $twk0,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vand $tmp,$tmp,$eighty7
vxor $out0,$in0,$twk0
vxor $tweak,$tweak,$tmp
xxlor 32+$in1, 0, 0
vpermxor $tweak, $tweak, $tmp, $in1
lvx_u $in1,$x10,$inp
vxor $twk1,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in1,$in1,$in1,$leperm
vand $tmp,$tmp,$eighty7
vxor $out1,$in1,$twk1
vxor $tweak,$tweak,$tmp
xxlor 32+$in2, 0, 0
vpermxor $tweak, $tweak, $tmp, $in2
lvx_u $in2,$x20,$inp
andi. $taillen,$len,15
vxor $twk2,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in2,$in2,$in2,$leperm
vand $tmp,$tmp,$eighty7
vxor $out2,$in2,$twk2
vxor $tweak,$tweak,$tmp
xxlor 32+$in3, 0, 0
vpermxor $tweak, $tweak, $tmp, $in3
lvx_u $in3,$x30,$inp
sub $len,$len,$taillen
vxor $twk3,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in3,$in3,$in3,$leperm
vand $tmp,$tmp,$eighty7
vxor $out3,$in3,$twk3
vxor $tweak,$tweak,$tmp
xxlor 32+$in4, 0, 0
vpermxor $tweak, $tweak, $tmp, $in4
lvx_u $in4,$x40,$inp
subi $len,$len,0x60
vxor $twk4,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in4,$in4,$in4,$leperm
vand $tmp,$tmp,$eighty7
vxor $out4,$in4,$twk4
vxor $tweak,$tweak,$tmp
xxlor 32+$in5, 0, 0
vpermxor $tweak, $tweak, $tmp, $in5
lvx_u $in5,$x50,$inp
addi $inp,$inp,0x60
vxor $twk5,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in5,$in5,$in5,$leperm
vand $tmp,$tmp,$eighty7
vxor $out5,$in5,$twk5
vxor $tweak,$tweak,$tmp
xxlor 32+$in0, 0, 0
vpermxor $tweak, $tweak, $tmp, $in0
vxor v31,v31,$rndkey0
mtctr $rounds
@ -2625,6 +2645,8 @@ Loop_xts_enc6x:
lvx v25,$x10,$key_ # round[4]
bdnz Loop_xts_enc6x
xxlor 32+$eighty7, 1, 1 # 0x010101..87
subic $len,$len,96 # $len-=96
vxor $in0,$twk0,v31 # xor with last round key
vcipher $out0,$out0,v24
@ -2634,7 +2656,6 @@ Loop_xts_enc6x:
vaddubm $tweak,$tweak,$tweak
vcipher $out2,$out2,v24
vcipher $out3,$out3,v24
vsldoi $tmp,$tmp,$tmp,15
vcipher $out4,$out4,v24
vcipher $out5,$out5,v24
@ -2642,7 +2663,8 @@ Loop_xts_enc6x:
vand $tmp,$tmp,$eighty7
vcipher $out0,$out0,v25
vcipher $out1,$out1,v25
vxor $tweak,$tweak,$tmp
xxlor 32+$in1, 0, 0
vpermxor $tweak, $tweak, $tmp, $in1
vcipher $out2,$out2,v25
vcipher $out3,$out3,v25
vxor $in1,$twk1,v31
@ -2653,13 +2675,13 @@ Loop_xts_enc6x:
and r0,r0,$len
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vcipher $out0,$out0,v26
vcipher $out1,$out1,v26
vand $tmp,$tmp,$eighty7
vcipher $out2,$out2,v26
vcipher $out3,$out3,v26
vxor $tweak,$tweak,$tmp
xxlor 32+$in2, 0, 0
vpermxor $tweak, $tweak, $tmp, $in2
vcipher $out4,$out4,v26
vcipher $out5,$out5,v26
@ -2673,7 +2695,6 @@ Loop_xts_enc6x:
vaddubm $tweak,$tweak,$tweak
vcipher $out0,$out0,v27
vcipher $out1,$out1,v27
vsldoi $tmp,$tmp,$tmp,15
vcipher $out2,$out2,v27
vcipher $out3,$out3,v27
vand $tmp,$tmp,$eighty7
@ -2681,7 +2702,8 @@ Loop_xts_enc6x:
vcipher $out5,$out5,v27
addi $key_,$sp,$FRAME+15 # rewind $key_
vxor $tweak,$tweak,$tmp
xxlor 32+$in3, 0, 0
vpermxor $tweak, $tweak, $tmp, $in3
vcipher $out0,$out0,v28
vcipher $out1,$out1,v28
vxor $in3,$twk3,v31
@ -2690,7 +2712,6 @@ Loop_xts_enc6x:
vcipher $out2,$out2,v28
vcipher $out3,$out3,v28
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vcipher $out4,$out4,v28
vcipher $out5,$out5,v28
lvx v24,$x00,$key_ # re-pre-load round[1]
@ -2698,7 +2719,8 @@ Loop_xts_enc6x:
vcipher $out0,$out0,v29
vcipher $out1,$out1,v29
vxor $tweak,$tweak,$tmp
xxlor 32+$in4, 0, 0
vpermxor $tweak, $tweak, $tmp, $in4
vcipher $out2,$out2,v29
vcipher $out3,$out3,v29
vxor $in4,$twk4,v31
@ -2708,14 +2730,14 @@ Loop_xts_enc6x:
vcipher $out5,$out5,v29
lvx v25,$x10,$key_ # re-pre-load round[2]
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vcipher $out0,$out0,v30
vcipher $out1,$out1,v30
vand $tmp,$tmp,$eighty7
vcipher $out2,$out2,v30
vcipher $out3,$out3,v30
vxor $tweak,$tweak,$tmp
xxlor 32+$in5, 0, 0
vpermxor $tweak, $tweak, $tmp, $in5
vcipher $out4,$out4,v30
vcipher $out5,$out5,v30
vxor $in5,$twk5,v31
@ -2725,7 +2747,6 @@ Loop_xts_enc6x:
vcipherlast $out0,$out0,$in0
lvx_u $in0,$x00,$inp # load next input block
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vcipherlast $out1,$out1,$in1
lvx_u $in1,$x10,$inp
vcipherlast $out2,$out2,$in2
@ -2738,7 +2759,10 @@ Loop_xts_enc6x:
vcipherlast $out4,$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
vcipherlast $tmp,$out5,$in5 # last block might be needed
# in stealing mode
le?vperm $in3,$in3,$in3,$leperm
@ -2771,6 +2795,8 @@ Loop_xts_enc6x:
mtctr $rounds
beq Loop_xts_enc6x # did $len-=96 borrow?
xxlor 32+$eighty7, 2, 2 # 0x010101..87
addic. $len,$len,0x60
beq Lxts_enc6x_zero
cmpwi $len,0x20
@ -3147,6 +3173,17 @@ _aesp8_xts_decrypt6x:
li $x70,0x70
mtspr 256,r0
xxlor 2, 32+$eighty7, 32+$eighty7
vsldoi $eighty7,$tmp,$eighty7,1 # 0x010101..87
xxlor 1, 32+$eighty7, 32+$eighty7
# Load XOR Lconsts.
mr $x70, r6
bl Lconsts
lxvw4x 0, $x40, r6 # load XOR contents
mr r6, $x70
li $x70,0x70
subi $rounds,$rounds,3 # -4 in total
lvx $rndkey0,$x00,$key1 # load key schedule
@ -3194,64 +3231,64 @@ Load_xts_dec_key:
vxor $twk0,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vand $tmp,$tmp,$eighty7
vxor $out0,$in0,$twk0
vxor $tweak,$tweak,$tmp
xxlor 32+$in1, 0, 0
vpermxor $tweak, $tweak, $tmp, $in1
lvx_u $in1,$x10,$inp
vxor $twk1,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in1,$in1,$in1,$leperm
vand $tmp,$tmp,$eighty7
vxor $out1,$in1,$twk1
vxor $tweak,$tweak,$tmp
xxlor 32+$in2, 0, 0
vpermxor $tweak, $tweak, $tmp, $in2
lvx_u $in2,$x20,$inp
andi. $taillen,$len,15
vxor $twk2,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in2,$in2,$in2,$leperm
vand $tmp,$tmp,$eighty7
vxor $out2,$in2,$twk2
vxor $tweak,$tweak,$tmp
xxlor 32+$in3, 0, 0
vpermxor $tweak, $tweak, $tmp, $in3
lvx_u $in3,$x30,$inp
sub $len,$len,$taillen
vxor $twk3,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in3,$in3,$in3,$leperm
vand $tmp,$tmp,$eighty7
vxor $out3,$in3,$twk3
vxor $tweak,$tweak,$tmp
xxlor 32+$in4, 0, 0
vpermxor $tweak, $tweak, $tmp, $in4
lvx_u $in4,$x40,$inp
subi $len,$len,0x60
vxor $twk4,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in4,$in4,$in4,$leperm
vand $tmp,$tmp,$eighty7
vxor $out4,$in4,$twk4
vxor $tweak,$tweak,$tmp
xxlor 32+$in5, 0, 0
vpermxor $tweak, $tweak, $tmp, $in5
lvx_u $in5,$x50,$inp
addi $inp,$inp,0x60
vxor $twk5,$tweak,$rndkey0
vsrab $tmp,$tweak,$seven # next tweak value
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
le?vperm $in5,$in5,$in5,$leperm
vand $tmp,$tmp,$eighty7
vxor $out5,$in5,$twk5
vxor $tweak,$tweak,$tmp
xxlor 32+$in0, 0, 0
vpermxor $tweak, $tweak, $tmp, $in0
vxor v31,v31,$rndkey0
mtctr $rounds
@ -3277,6 +3314,8 @@ Loop_xts_dec6x:
lvx v25,$x10,$key_ # round[4]
bdnz Loop_xts_dec6x
xxlor 32+$eighty7, 1, 1 # 0x010101..87
subic $len,$len,96 # $len-=96
vxor $in0,$twk0,v31 # xor with last round key
vncipher $out0,$out0,v24
@ -3286,7 +3325,6 @@ Loop_xts_dec6x:
vaddubm $tweak,$tweak,$tweak
vncipher $out2,$out2,v24
vncipher $out3,$out3,v24
vsldoi $tmp,$tmp,$tmp,15
vncipher $out4,$out4,v24
vncipher $out5,$out5,v24
@ -3294,7 +3332,8 @@ Loop_xts_dec6x:
vand $tmp,$tmp,$eighty7
vncipher $out0,$out0,v25
vncipher $out1,$out1,v25
vxor $tweak,$tweak,$tmp
xxlor 32+$in1, 0, 0
vpermxor $tweak, $tweak, $tmp, $in1
vncipher $out2,$out2,v25
vncipher $out3,$out3,v25
vxor $in1,$twk1,v31
@ -3305,13 +3344,13 @@ Loop_xts_dec6x:
and r0,r0,$len
vaddubm $tweak,$tweak,$tweak
vsldoi $tmp,$tmp,$tmp,15
vncipher $out0,$out0,v26
vncipher $out1,$out1,v26
vand $tmp,$tmp,$eighty7
vncipher $out2,$out2,v26
vncipher $out3,$out3,v26
vxor $tweak,$tweak,$tmp
xxlor 32+$in2, 0, 0
vpermxor $tweak, $tweak, $tmp, $in2
vncipher $out4,$out4,v26
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