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Commit 45dfe237 authored by David S. Miller's avatar David S. Miller
Browse files

sparc64: Use fsrc2 instead of fsrc1 in sparc64 hash crypto drivers. 



On SPARC-T4 fsrc2 has 1 cycle of latency, whereas fsrc1 has 11 cycles.

True story.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 81658ad0

arch/sparc/crypto/md5_asm.S

+1 −1
Original line number Diff line number Diff line
@@ -62,7 +62,7 @@ ENTRY(md5_sparc64_transform) 
	.word	0x81b02800



	subcc	%o2, 1, %o2

	fsrc1	%f26, %f10

	fsrc2	%f26, %f10

	bne,pt	%xcc, 1b

	 add	%o1, 0x40, %o1

arch/sparc/crypto/sha1_asm.S

+1 −1
Original line number Diff line number Diff line
@@ -64,7 +64,7 @@ ENTRY(sha1_sparc64_transform) 
	.word	0x81b02820



	subcc	%o2, 1, %o2

	fsrc1	%f26, %f10

	fsrc2	%f26, %f10

	bne,pt	%xcc, 1b

	 add	%o1, 0x40, %o1

arch/sparc/crypto/sha256_asm.S

+1 −1
Original line number Diff line number Diff line
@@ -70,7 +70,7 @@ ENTRY(sha256_sparc64_transform) 
	.word	0x81b02840



	subcc	%o2, 1, %o2

	fsrc1	%f26, %f10

	fsrc2	%f26, %f10

	bne,pt	%xcc, 1b

	 add	%o1, 0x40, %o1

arch/sparc/crypto/sha512_asm.S

+1 −1
Original line number Diff line number Diff line
@@ -94,7 +94,7 @@ ENTRY(sha512_sparc64_transform) 
	.word	0x81b02860



	subcc	%o2, 1, %o2

	fsrc1	%f50, %f18

	fsrc2	%f50, %f18

	bne,pt	%xcc, 1b

	 add	%o1, 0x80, %o1