diff options
| author | Cyrille Pitchen <cyrille.pitchen@atmel.com> | 2017-01-26 17:07:56 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-02-03 18:16:14 +0800 |
| commit | 89a82ef87e012061989fcaf7dd51d706ff2090e3 (patch) | |
| tree | 7bd40206ac0ca5832b0bdeddff825465c16a7d7c /drivers/crypto/atmel-sha-regs.h | |
| parent | a1f613f167a36610d238b66f5e49bfdb1d04aa89 (diff) | |
crypto: atmel-authenc - add support to authenc(hmac(shaX), Y(aes)) modes
This patchs allows to combine the AES and SHA hardware accelerators on
some Atmel SoCs. Doing so, AES blocks are only written to/read from the
AES hardware. Those blocks are also transferred from the AES to the SHA
accelerator internally, without additionnal accesses to the system busses.
Hence, the AES and SHA accelerators work in parallel to process all the
data blocks, instead of serializing the process by (de)crypting those
blocks first then authenticating them after like the generic
crypto/authenc.c driver does.
Of course, both the AES and SHA hardware accelerators need to be available
before we can start to process the data blocks. Hence we use their crypto
request queue to synchronize both drivers.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/atmel-sha-regs.h')
| -rw-r--r-- | drivers/crypto/atmel-sha-regs.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/crypto/atmel-sha-regs.h b/drivers/crypto/atmel-sha-regs.h index 1b9f3d33079e..1b0eba4a2706 100644 --- a/drivers/crypto/atmel-sha-regs.h +++ b/drivers/crypto/atmel-sha-regs.h @@ -29,6 +29,20 @@ #define SHA_MR_HMAC (1 << 11) #define SHA_MR_DUALBUFF (1 << 16) +#define SHA_FLAGS_ALGO_MASK SHA_MR_ALGO_MASK +#define SHA_FLAGS_SHA1 SHA_MR_ALGO_SHA1 +#define SHA_FLAGS_SHA256 SHA_MR_ALGO_SHA256 +#define SHA_FLAGS_SHA384 SHA_MR_ALGO_SHA384 +#define SHA_FLAGS_SHA512 SHA_MR_ALGO_SHA512 +#define SHA_FLAGS_SHA224 SHA_MR_ALGO_SHA224 +#define SHA_FLAGS_HMAC SHA_MR_HMAC +#define SHA_FLAGS_HMAC_SHA1 (SHA_FLAGS_HMAC | SHA_FLAGS_SHA1) +#define SHA_FLAGS_HMAC_SHA256 (SHA_FLAGS_HMAC | SHA_FLAGS_SHA256) +#define SHA_FLAGS_HMAC_SHA384 (SHA_FLAGS_HMAC | SHA_FLAGS_SHA384) +#define SHA_FLAGS_HMAC_SHA512 (SHA_FLAGS_HMAC | SHA_FLAGS_SHA512) +#define SHA_FLAGS_HMAC_SHA224 (SHA_FLAGS_HMAC | SHA_FLAGS_SHA224) +#define SHA_FLAGS_MODE_MASK (SHA_FLAGS_HMAC | SHA_FLAGS_ALGO_MASK) + #define SHA_IER 0x10 #define SHA_IDR 0x14 #define SHA_IMR 0x18 |