mirror of https://gitee.com/openkylin/linux.git
crypto: mediatek - rework crypto request completion
This patch introduces a new callback 'resume' in the struct mtk_aes_rec. This callback is run to resume/complete the processing of the crypto request when woken up by AES interrupts when DMA completion. This callback will help implementing the GCM mode support in further patches. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -406,6 +406,15 @@ static int mtk_aes_handle_queue(struct mtk_cryp *cryp, u8 id,
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return ctx->start(cryp, aes);
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}
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static int mtk_aes_complete(struct mtk_cryp *cryp, struct mtk_aes_rec *aes)
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{
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aes->flags &= ~AES_FLAGS_BUSY;
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aes->areq->complete(aes->areq, 0);
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/* Handle new request */
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return mtk_aes_handle_queue(cryp, aes->id, NULL);
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}
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static int mtk_aes_start(struct mtk_cryp *cryp, struct mtk_aes_rec *aes)
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{
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struct ablkcipher_request *req = ablkcipher_request_cast(aes->areq);
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@ -416,6 +425,8 @@ static int mtk_aes_start(struct mtk_cryp *cryp, struct mtk_aes_rec *aes)
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rctx->mode &= AES_FLAGS_MODE_MSK;
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aes->flags = (aes->flags & ~AES_FLAGS_MODE_MSK) | rctx->mode;
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aes->resume = mtk_aes_complete;
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err = mtk_aes_map(cryp, aes, req->src, req->dst, req->nbytes);
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if (err)
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return err;
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@ -458,16 +469,6 @@ static void mtk_aes_unmap(struct mtk_cryp *cryp, struct mtk_aes_rec *aes)
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aes->buf, aes->total);
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}
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static inline void mtk_aes_complete(struct mtk_cryp *cryp,
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struct mtk_aes_rec *aes)
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{
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aes->flags &= ~AES_FLAGS_BUSY;
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aes->areq->complete(aes->areq, 0);
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/* Handle new request */
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mtk_aes_handle_queue(cryp, aes->id, NULL);
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}
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/* Check and set the AES key to transform state buffer */
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static int mtk_aes_setkey(struct crypto_ablkcipher *tfm,
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const u8 *key, u32 keylen)
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@ -591,7 +592,7 @@ static void mtk_aes_enc_task(unsigned long data)
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struct mtk_aes_rec *aes = cryp->aes[0];
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mtk_aes_unmap(cryp, aes);
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mtk_aes_complete(cryp, aes);
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aes->resume(cryp, aes);
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}
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static void mtk_aes_dec_task(unsigned long data)
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@ -600,7 +601,7 @@ static void mtk_aes_dec_task(unsigned long data)
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struct mtk_aes_rec *aes = cryp->aes[1];
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mtk_aes_unmap(cryp, aes);
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mtk_aes_complete(cryp, aes);
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aes->resume(cryp, aes);
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}
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static irqreturn_t mtk_aes_enc_irq(int irq, void *dev_id)
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@ -131,6 +131,7 @@ typedef int (*mtk_aes_fn)(struct mtk_cryp *cryp, struct mtk_aes_rec *aes);
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* @dst: the structure that holds destination sg list info
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* @aligned_sg: the scatter list is use to alignment
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* @real_dst: pointer to the destination sg list
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* @resume: pointer to resume function
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* @total: request buffer length
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* @buf: pointer to page buffer
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* @id: record identification
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@ -150,6 +151,8 @@ struct mtk_aes_rec {
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struct scatterlist aligned_sg;
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struct scatterlist *real_dst;
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mtk_aes_fn resume;
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size_t total;
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void *buf;
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