diff options
Diffstat (limited to 'drivers/crypto/mxs-dcp.c')
| -rw-r--r-- | drivers/crypto/mxs-dcp.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c index a6db7fa6f891..56bde65ddadf 100644 --- a/drivers/crypto/mxs-dcp.c +++ b/drivers/crypto/mxs-dcp.c @@ -83,13 +83,16 @@ struct dcp_async_ctx { unsigned int hot:1; /* Crypto-specific context */ - unsigned int enc:1; - unsigned int ecb:1; struct crypto_ablkcipher *fallback; unsigned int key_len; uint8_t key[AES_KEYSIZE_128]; }; +struct dcp_aes_req_ctx { + unsigned int enc:1; + unsigned int ecb:1; +}; + struct dcp_sha_req_ctx { unsigned int init:1; unsigned int fini:1; @@ -190,10 +193,12 @@ static int mxs_dcp_start_dma(struct dcp_async_ctx *actx) /* * Encryption (AES128) */ -static int mxs_dcp_run_aes(struct dcp_async_ctx *actx, int init) +static int mxs_dcp_run_aes(struct dcp_async_ctx *actx, + struct ablkcipher_request *req, int init) { struct dcp *sdcp = global_sdcp; struct dcp_dma_desc *desc = &sdcp->coh->desc[actx->chan]; + struct dcp_aes_req_ctx *rctx = ablkcipher_request_ctx(req); int ret; dma_addr_t key_phys = dma_map_single(sdcp->dev, sdcp->coh->aes_key, @@ -212,14 +217,14 @@ static int mxs_dcp_run_aes(struct dcp_async_ctx *actx, int init) /* Payload contains the key. */ desc->control0 |= MXS_DCP_CONTROL0_PAYLOAD_KEY; - if (actx->enc) + if (rctx->enc) desc->control0 |= MXS_DCP_CONTROL0_CIPHER_ENCRYPT; if (init) desc->control0 |= MXS_DCP_CONTROL0_CIPHER_INIT; desc->control1 = MXS_DCP_CONTROL1_CIPHER_SELECT_AES128; - if (actx->ecb) + if (rctx->ecb) desc->control1 |= MXS_DCP_CONTROL1_CIPHER_MODE_ECB; else desc->control1 |= MXS_DCP_CONTROL1_CIPHER_MODE_CBC; @@ -247,6 +252,7 @@ static int mxs_dcp_aes_block_crypt(struct crypto_async_request *arq) struct ablkcipher_request *req = ablkcipher_request_cast(arq); struct dcp_async_ctx *actx = crypto_tfm_ctx(arq->tfm); + struct dcp_aes_req_ctx *rctx = ablkcipher_request_ctx(req); struct scatterlist *dst = req->dst; struct scatterlist *src = req->src; @@ -271,7 +277,7 @@ static int mxs_dcp_aes_block_crypt(struct crypto_async_request *arq) /* Copy the key from the temporary location. */ memcpy(key, actx->key, actx->key_len); - if (!actx->ecb) { + if (!rctx->ecb) { /* Copy the CBC IV just past the key. */ memcpy(key + AES_KEYSIZE_128, req->info, AES_KEYSIZE_128); /* CBC needs the INIT set. */ @@ -300,7 +306,7 @@ static int mxs_dcp_aes_block_crypt(struct crypto_async_request *arq) * submit the buffer. */ if (actx->fill == out_off || sg_is_last(src)) { - ret = mxs_dcp_run_aes(actx, init); + ret = mxs_dcp_run_aes(actx, req, init); if (ret) return ret; init = 0; @@ -391,13 +397,14 @@ static int mxs_dcp_aes_enqueue(struct ablkcipher_request *req, int enc, int ecb) struct dcp *sdcp = global_sdcp; struct crypto_async_request *arq = &req->base; struct dcp_async_ctx *actx = crypto_tfm_ctx(arq->tfm); + struct dcp_aes_req_ctx *rctx = ablkcipher_request_ctx(req); int ret; if (unlikely(actx->key_len != AES_KEYSIZE_128)) return mxs_dcp_block_fallback(req, enc); - actx->enc = enc; - actx->ecb = ecb; + rctx->enc = enc; + rctx->ecb = ecb; actx->chan = DCP_CHAN_CRYPTO; mutex_lock(&sdcp->mutex[actx->chan]); @@ -484,7 +491,7 @@ static int mxs_dcp_aes_fallback_init(struct crypto_tfm *tfm) return PTR_ERR(blk); actx->fallback = blk; - tfm->crt_ablkcipher.reqsize = sizeof(struct dcp_async_ctx); + tfm->crt_ablkcipher.reqsize = sizeof(struct dcp_aes_req_ctx); return 0; } |