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crypto: inside-secure - enable context reuse

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The context given to the crypto engine can be reused over time. While
the driver was designed to allow this, the feature wasn't enabled in the
hardware engine. This patch enables it.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Antoine Tenart
2019-05-27 16:50:59 +02:00
committed by Herbert Xu
parent 082a9d0918
commit 97a1440d12
3 changed files with 16 additions and 0 deletions
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6
drivers/crypto/inside-secure/safexcel.c
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@@ -398,6 +398,12 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
/* Processing Engine configuration */
/* Token & context configuration */
val = EIP197_PE_EIP96_TOKEN_CTRL_CTX_UPDATES |
EIP197_PE_EIP96_TOKEN_CTRL_REUSE_CTX |
EIP197_PE_EIP96_TOKEN_CTRL_POST_REUSE_CTX;
writel(val, EIP197_PE(priv) + EIP197_PE_EIP96_TOKEN_CTRL(pe));
/* H/W capabilities selection */
val = EIP197_FUNCTION_RSVD;
val |= EIP197_PROTOCOL_ENCRYPT_ONLY | EIP197_PROTOCOL_HASH_ONLY;