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crypto: padlock - Enable on x86_64

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Almost everything stays the same, we need just to use the extended registers
on the bit variant.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Sebastian Andrzej Siewior 2009-04-21 14:14:37 +08:00 committed by Herbert Xu
parent 962a9c9949
commit d1c8b0a769
2 changed files with 14 additions and 1 deletions
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2
drivers/crypto/Kconfig
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@ -12,7 +12,7 @@ if CRYPTO_HW
config CRYPTO_DEV_PADLOCK
tristate "Support for VIA PadLock ACE"
depends on X86_32 && !UML
depends on !UML
select CRYPTO_ALGAPI
help
Some VIA processors come with an integrated crypto engine

13
drivers/crypto/padlock-aes.c
View file

@ -154,7 +154,11 @@ static inline void padlock_reset_key(struct cword *cword)
int cpu = raw_smp_processor_id();
if (cword != per_cpu(last_cword, cpu))
#ifndef CONFIG_X86_64
asm volatile ("pushfl; popfl");
#else
asm volatile ("pushfq; popfq");
#endif
}
static inline void padlock_store_cword(struct cword *cword)
@ -208,10 +212,19 @@ static inline void padlock_xcrypt_ecb(const u8 *input, u8 *output, void *key,
asm volatile ("test $1, %%cl;"
"je 1f;"
#ifndef CONFIG_X86_64
"lea -1(%%ecx), %%eax;"
"mov $1, %%ecx;"
#else
"lea -1(%%rcx), %%rax;"
"mov $1, %%rcx;"
#endif
".byte 0xf3,0x0f,0xa7,0xc8;" /* rep xcryptecb */
#ifndef CONFIG_X86_64
"mov %%eax, %%ecx;"
#else
"mov %%rax, %%rcx;"
#endif
"1:"
".byte 0xf3,0x0f,0xa7,0xc8" /* rep xcryptecb */
: "+S"(input), "+D"(output)