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crypto: inside-secure - handle more result requests when counter is full

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This patch modifies the result handling logic to continue handling
results when the completed requests counter is full and not showing the
actual number of requests to handle.

Suggested-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Antoine Ténart 2017-12-14 15:26:56 +01:00 committed by Herbert Xu
parent 2313e9f7ec
commit 7f77f5a4fc
2 changed files with 14 additions and 3 deletions
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15
drivers/crypto/inside-secure/safexcel.c
View file

@ -600,12 +600,15 @@ static inline void safexcel_handle_result_descriptor(struct safexcel_crypto_priv
{
struct safexcel_request *sreq;
struct safexcel_context *ctx;
int ret, i, nreq, ndesc = 0, tot_descs = 0, done;
int ret, i, nreq, ndesc, tot_descs, done;
bool should_complete;
handle_results:
tot_descs = 0;
nreq = readl(priv->base + EIP197_HIA_RDR(ring) + EIP197_HIA_xDR_PROC_COUNT);
nreq >>= 24;
nreq &= GENMASK(6, 0);
nreq >>= EIP197_xDR_PROC_xD_PKT_OFFSET;
nreq &= EIP197_xDR_PROC_xD_PKT_MASK;
if (!nreq)
goto requests_left;
@ -642,6 +645,12 @@ static inline void safexcel_handle_result_descriptor(struct safexcel_crypto_priv
priv->base + EIP197_HIA_RDR(ring) + EIP197_HIA_xDR_PROC_COUNT);
}
/* If the number of requests overflowed the counter, try to proceed more
* requests.
*/
if (nreq == EIP197_xDR_PROC_xD_PKT_MASK)
goto handle_results;
requests_left:
spin_lock_bh(&priv->ring[ring].egress_lock);

2
drivers/crypto/inside-secure/safexcel.h
View file

@ -117,6 +117,8 @@
#define EIP197_xDR_PREP_CLR_COUNT BIT(31)
/* EIP197_HIA_xDR_PROC_COUNT */
#define EIP197_xDR_PROC_xD_PKT_OFFSET 24
#define EIP197_xDR_PROC_xD_PKT_MASK GENMASK(6, 0)
#define EIP197_xDR_PROC_xD_COUNT(n) ((n) << 2)
#define EIP197_xDR_PROC_xD_PKT(n) ((n) << 24)
#define EIP197_xDR_PROC_CLR_COUNT BIT(31)