diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/marvell/hash.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index 71d29f025bbe..d282716e0ca7 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -529,32 +529,45 @@ mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain, struct mv_cesa_op_ctx *op; int ret; - if (frag_len) { + /* + * If the transfer is smaller than our maximum length, and we have + * some data outstanding, we can ask the engine to finish the hash. + */ + if (creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX && frag_len) { op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, frag_len, flags); if (IS_ERR(op)) return op; - } else { - op = NULL; - } - - if (op && creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX) { - u32 frag = CESA_SA_DESC_CFG_NOT_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); + mv_cesa_set_mac_op_total_len(op, creq->len); + mv_cesa_update_op_cfg(op, mv_cesa_mac_op_is_first_frag(op) ? + CESA_SA_DESC_CFG_NOT_FRAG : + CESA_SA_DESC_CFG_LAST_FRAG, + CESA_SA_DESC_CFG_FRAG_MSK); return op; } + /* + * The request is longer than the engine can handle, or we have + * no data outstanding. Manually generate the padding, adding it + * as a "mid" fragment. + */ ret = mv_cesa_ahash_dma_alloc_padding(ahashdreq, flags); if (ret) return ERR_PTR(ret); trailerlen = mv_cesa_ahash_pad_req(creq, ahashdreq->padding); + if (frag_len) { + op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, frag_len, + flags); + if (IS_ERR(op)) + return op; + } else { + op = NULL; + } + if (op) { len = min(CESA_SA_SRAM_PAYLOAD_SIZE - dma_iter->base.op_len, trailerlen); |