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crypto: caam - Add Platform driver for Job Ring

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The SEC Job Rings are now available as individual devices.
This would enable sharing of job rings between kernel and
user space. Job Rings can now be dynamically bound/unbound
from kernel.

Changes are made in the following layers of CAAM Driver
1. Controller driver
        - Does basic initialization of CAAM Block.
        - Creates platform devices for Job Rings.
(Earlier the initialization of Job ring  was done
 by the controller driver)

2. JobRing Platform driver
        - Manages the platform Job Ring devices created
          by the controller driver

Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ruchika Gupta
2013-10-25 12:01:01 +05:30
committed by Herbert Xu
parent 0d28978824
commit 313ea293e9
9 changed files with 234 additions and 138 deletions
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drivers/crypto/caam/caamhash.c
+3 -1
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@@ -1680,12 +1680,14 @@ static int caam_hash_cra_init(struct crypto_tfm *tfm)
HASH_MSG_LEN + SHA512_DIGEST_SIZE };
int tgt_jr = atomic_inc_return(&priv->tfm_count);
int ret = 0;
struct platform_device *pdev;
/*
* distribute tfms across job rings to ensure in-order
* crypto request processing per tfm
*/
ctx->jrdev = priv->jrdev[tgt_jr % priv->total_jobrs];
pdev = priv->jrpdev[tgt_jr % priv->total_jobrs];
ctx->jrdev = &pdev->dev;
/* copy descriptor header template value */
ctx->alg_type = OP_TYPE_CLASS2_ALG | caam_hash->alg_type;