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Commit 1e585ef5 authored by Aaro Koskinen's avatar Aaro Koskinen Committed by Herbert Xu
Browse files

crypto: octeon - add instruction definitions for MD5 



Add instruction definitions for MD5. Based on information extracted
from EdgeRouter Pro GPL source tarball.

Signed-off-by: default avatarAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent f421258d

arch/mips/cavium-octeon/crypto/octeon-crypto.h

+56 −0
Original line number Diff line number Diff line
@@ -4,14 +4,70 @@ 
 * for more details.

 *

 * Copyright (C) 2012-2013 Cavium Inc., All Rights Reserved.

 *

 * MD5 instruction definitions added by Aaro Koskinen <aaro.koskinen@iki.fi>.

 *

 */

#ifndef __LINUX_OCTEON_CRYPTO_H

#define __LINUX_OCTEON_CRYPTO_H



#include <linux/sched.h>

#include <asm/mipsregs.h>



extern unsigned long octeon_crypto_enable(struct octeon_cop2_state *state);

extern void octeon_crypto_disable(struct octeon_cop2_state *state,

				  unsigned long flags);



/*

 * Macros needed to implement MD5:

 */



/*

 * The index can be 0-1.

 */

#define write_octeon_64bit_hash_dword(value, index)	\

do {							\

	__asm__ __volatile__ (				\

	"dmtc2 %[rt],0x0048+" STR(index)		\

	:						\

	: [rt] "d" (value));				\

} while (0)



/*

 * The index can be 0-1.

 */

#define read_octeon_64bit_hash_dword(index)		\

({							\

	u64 __value;					\

							\

	__asm__ __volatile__ (				\

	"dmfc2 %[rt],0x0048+" STR(index)		\

	: [rt] "=d" (__value)				\

	: );						\

							\

	__value;					\

})



/*

 * The index can be 0-6.

 */

#define write_octeon_64bit_block_dword(value, index)	\

do {							\

	__asm__ __volatile__ (				\

	"dmtc2 %[rt],0x0040+" STR(index)		\

	:						\

	: [rt] "d" (value));				\

} while (0)



/*

 * The value is the final block dword (64-bit).

 */

#define octeon_md5_start(value)				\

do {							\

	__asm__ __volatile__ (				\

	"dmtc2 %[rt],0x4047"				\

	:						\

	: [rt] "d" (value));				\

} while (0)



#endif /* __LINUX_OCTEON_CRYPTO_H */