xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

crypto: x86/sha - glue code for Intel SHA extensions optimized SHA1 & SHA256

Browse Source 
This patch adds the glue code to detect and utilize the Intel SHA
extensions optimized SHA1 and SHA256 update transforms when available.

This code has been tested on Broxton for functionality.

Originally-by: Chandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
tim
2015-09-10 15:27:20 -07:00
committed by Herbert Xu
parent 600a2334e8
commit 95fca7df0b
2 changed files with 34 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/x86/crypto/sha1_ssse3_glue.c
View File

@@ -44,6 +44,10 @@ asmlinkage void sha1_transform_avx(u32 *digest, const char *data,
asmlinkage void sha1_transform_avx2(u32 *digest, const char *data,
unsigned int rounds);
#endif
#ifdef CONFIG_AS_SHA1_NI
asmlinkage void sha1_ni_transform(u32 *digest, const char *data,
unsigned int rounds);
#endif
static void (*sha1_transform_asm)(u32 *, const char *, unsigned int);
@@ -166,12 +170,18 @@ static int __init sha1_ssse3_mod_init(void)
#endif
}
#endif
#ifdef CONFIG_AS_SHA1_NI
if (boot_cpu_has(X86_FEATURE_SHA_NI)) {
sha1_transform_asm = sha1_ni_transform;
algo_name = "SHA-NI";
}
#endif
if (sha1_transform_asm) {
pr_info("Using %s optimized SHA-1 implementation\n", algo_name);
return crypto_register_shash(&alg);
}
pr_info("Neither AVX nor AVX2 nor SSSE3 is available/usable.\n");
pr_info("Neither AVX nor AVX2 nor SSSE3/SHA-NI is available/usable.\n");
return -ENODEV;
}