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crypto: caam - enable crypto-engine retry mechanism

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Use the new crypto_engine_alloc_init_and_set() function to
initialize crypto-engine and enable retry mechanism.

Set the maximum size for crypto-engine software queue based on
Job Ring size (JOBR_DEPTH) and a threshold (reserved for the
non-crypto-API requests that are not passed through crypto-engine).

The callback for do_batch_requests is NULL, since CAAM
doesn't support linked requests.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Iuliana Prodan 2020-10-26 21:06:26 +02:00 • committed by Herbert Xu
parent 09a5ef9644
commit 2d653936eb
2 changed files with 11 additions and 1 deletions
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8
drivers/crypto/caam/intern.h
View file

@ -16,6 +16,14 @@
/* Currently comes from Kconfig param as a ^2 (driver-required) */ /* Currently comes from Kconfig param as a ^2 (driver-required) */
#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) #define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)
/*
* Maximum size for crypto-engine software queue based on Job Ring
* size (JOBR_DEPTH) and a THRESHOLD (reserved for the non-crypto-API
* requests that are not passed through crypto-engine)
*/
#define THRESHOLD 15
#define CRYPTO_ENGINE_MAX_QLEN (JOBR_DEPTH - THRESHOLD)
/* Kconfig params for interrupt coalescing if selected (else zero) */ /* Kconfig params for interrupt coalescing if selected (else zero) */
#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC #ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC
#define JOBR_INTC JRCFG_ICEN #define JOBR_INTC JRCFG_ICEN

4
drivers/crypto/caam/jr.c
View file

@ -550,7 +550,9 @@ static int caam_jr_probe(struct platform_device *pdev)
} }
/* Initialize crypto engine */ /* Initialize crypto engine */
jrpriv->engine = crypto_engine_alloc_init(jrdev, false); jrpriv->engine = crypto_engine_alloc_init_and_set(jrdev, true, NULL,
false,
CRYPTO_ENGINE_MAX_QLEN);
if (!jrpriv->engine) { if (!jrpriv->engine) {
dev_err(jrdev, "Could not init crypto-engine\n"); dev_err(jrdev, "Could not init crypto-engine\n");
return -ENOMEM; return -ENOMEM;