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crypto: octeon - add instruction definitions for MD5

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

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Aaro Koskinen 2014-12-21 22:53:59 +02:00 • committed by Herbert Xu
parent f421258d5b
commit 1e585ef51c
1 changed files with 56 additions and 0 deletions
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56
arch/mips/cavium-octeon/crypto/octeon-crypto.h
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@ -4,14 +4,70 @@
* for more details. * for more details.
* *
* Copyright (C) 2012-2013 Cavium Inc., All Rights Reserved. * 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 #ifndef __LINUX_OCTEON_CRYPTO_H
#define __LINUX_OCTEON_CRYPTO_H #define __LINUX_OCTEON_CRYPTO_H
#include <linux/sched.h> #include <linux/sched.h>
#include <asm/mipsregs.h>
extern unsigned long octeon_crypto_enable(struct octeon_cop2_state *state); extern unsigned long octeon_crypto_enable(struct octeon_cop2_state *state);
extern void octeon_crypto_disable(struct octeon_cop2_state *state, extern void octeon_crypto_disable(struct octeon_cop2_state *state,
unsigned long flags); 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 */ #endif /* __LINUX_OCTEON_CRYPTO_H */