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crypto: marvell/cesa - factor out first fragment decisions to helper

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Multiple locations in the driver test the operation context fragment
type, checking whether it is a first fragment or not.  Introduce a
mv_cesa_mac_op_is_first_frag() helper, which returns true if the
fragment operation is for a first fragment.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Russell King 2015-10-18 17:24:01 +01:00 committed by Herbert Xu
parent c439e4eec7
commit 8651791e54
2 changed files with 9 additions and 6 deletions
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6
drivers/crypto/marvell/cesa.h
View File

@ -686,6 +686,12 @@ static inline u32 mv_cesa_get_int_mask(struct mv_cesa_engine *engine)
return engine->int_mask;
}
static inline bool mv_cesa_mac_op_is_first_frag(const struct mv_cesa_op_ctx *op)
{
return (mv_cesa_get_op_cfg(op) & CESA_SA_DESC_CFG_FRAG_MSK) ==
CESA_SA_DESC_CFG_FIRST_FRAG;
}
int mv_cesa_queue_req(struct crypto_async_request *req);
/* TDMA functions */

9
drivers/crypto/marvell/hash.c
View File

@ -524,8 +524,7 @@ mv_cesa_ahash_dma_add_data(struct mv_cesa_tdma_chain *chain,
mv_cesa_set_mac_op_frag_len(op, dma_iter->base.op_len);
if ((mv_cesa_get_op_cfg(&creq->op_tmpl) & CESA_SA_DESC_CFG_FRAG_MSK) ==
CESA_SA_DESC_CFG_FIRST_FRAG)
if (mv_cesa_mac_op_is_first_frag(&creq->op_tmpl))
mv_cesa_update_op_cfg(&creq->op_tmpl,
CESA_SA_DESC_CFG_MID_FRAG,
CESA_SA_DESC_CFG_FRAG_MSK);
@ -561,8 +560,7 @@ mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain,
if (op && creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX) {
u32 frag = CESA_SA_DESC_CFG_NOT_FRAG;
if ((mv_cesa_get_op_cfg(op) & CESA_SA_DESC_CFG_FRAG_MSK) !=
CESA_SA_DESC_CFG_FIRST_FRAG)
if (!mv_cesa_mac_op_is_first_frag(op))
frag = CESA_SA_DESC_CFG_LAST_FRAG;
mv_cesa_update_op_cfg(op, frag, CESA_SA_DESC_CFG_FRAG_MSK);
@ -600,8 +598,7 @@ mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain,
if (padoff >= trailerlen)
return op;
if ((mv_cesa_get_op_cfg(&creq->op_tmpl) & CESA_SA_DESC_CFG_FRAG_MSK) !=
CESA_SA_DESC_CFG_FIRST_FRAG)
if (!mv_cesa_mac_op_is_first_frag(&creq->op_tmpl))
mv_cesa_update_op_cfg(&creq->op_tmpl,
CESA_SA_DESC_CFG_MID_FRAG,
CESA_SA_DESC_CFG_FRAG_MSK);