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author | LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-10-02 08:01:02 +0200 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-10-08 21:42:19 +0800 |
commit | fea40451530fea9ed3efd31eb932d1855a3a6e2d (patch) | |
tree | 3cfadb25a90928521f91d91859197261172e7612 /drivers/crypto | |
parent | 166db195536f380c4545a8d2fca9789402464bc8 (diff) | |
download | linux-stable-fea40451530fea9ed3efd31eb932d1855a3a6e2d.tar.gz linux-stable-fea40451530fea9ed3efd31eb932d1855a3a6e2d.tar.bz2 linux-stable-fea40451530fea9ed3efd31eb932d1855a3a6e2d.zip |
crypto: qce - dma_map_sg can handle chained SG
The qce driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.
Thus removing qce_mapsg, qce_unmapsg and qce_countsg functions.
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r-- | drivers/crypto/qce/ablkcipher.c | 30 | ||||
-rw-r--r-- | drivers/crypto/qce/cipher.h | 4 | ||||
-rw-r--r-- | drivers/crypto/qce/dma.c | 52 | ||||
-rw-r--r-- | drivers/crypto/qce/dma.h | 5 | ||||
-rw-r--r-- | drivers/crypto/qce/sha.c | 18 | ||||
-rw-r--r-- | drivers/crypto/qce/sha.h | 2 |
6 files changed, 17 insertions, 94 deletions
diff --git a/drivers/crypto/qce/ablkcipher.c b/drivers/crypto/qce/ablkcipher.c index ad592de475a4..2c0d63d48747 100644 --- a/drivers/crypto/qce/ablkcipher.c +++ b/drivers/crypto/qce/ablkcipher.c @@ -44,10 +44,8 @@ static void qce_ablkcipher_done(void *data) error); if (diff_dst) - qce_unmapsg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src, - rctx->dst_chained); - qce_unmapsg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst, - rctx->dst_chained); + dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src); + dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst); sg_free_table(&rctx->dst_tbl); @@ -80,15 +78,11 @@ qce_ablkcipher_async_req_handle(struct crypto_async_request *async_req) dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL; dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL; - rctx->src_nents = qce_countsg(req->src, req->nbytes, - &rctx->src_chained); - if (diff_dst) { - rctx->dst_nents = qce_countsg(req->dst, req->nbytes, - &rctx->dst_chained); - } else { + rctx->src_nents = sg_nents_for_len(req->src, req->nbytes); + if (diff_dst) + rctx->dst_nents = sg_nents_for_len(req->dst, req->nbytes); + else rctx->dst_nents = rctx->src_nents; - rctx->dst_chained = rctx->src_chained; - } rctx->dst_nents += 1; @@ -116,14 +110,12 @@ qce_ablkcipher_async_req_handle(struct crypto_async_request *async_req) sg_mark_end(sg); rctx->dst_sg = rctx->dst_tbl.sgl; - ret = qce_mapsg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst, - rctx->dst_chained); + ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst); if (ret < 0) goto error_free; if (diff_dst) { - ret = qce_mapsg(qce->dev, req->src, rctx->src_nents, dir_src, - rctx->src_chained); + ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src); if (ret < 0) goto error_unmap_dst; rctx->src_sg = req->src; @@ -149,11 +141,9 @@ error_terminate: qce_dma_terminate_all(&qce->dma); error_unmap_src: if (diff_dst) - qce_unmapsg(qce->dev, req->src, rctx->src_nents, dir_src, - rctx->src_chained); + dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src); error_unmap_dst: - qce_unmapsg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst, - rctx->dst_chained); + dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst); error_free: sg_free_table(&rctx->dst_tbl); return ret; diff --git a/drivers/crypto/qce/cipher.h b/drivers/crypto/qce/cipher.h index d5757cfcda2d..5c6a5f8633e5 100644 --- a/drivers/crypto/qce/cipher.h +++ b/drivers/crypto/qce/cipher.h @@ -32,8 +32,6 @@ struct qce_cipher_ctx { * @ivsize: IV size * @src_nents: source entries * @dst_nents: destination entries - * @src_chained: is source chained - * @dst_chained: is destination chained * @result_sg: scatterlist used for result buffer * @dst_tbl: destination sg table * @dst_sg: destination sg pointer table beginning @@ -47,8 +45,6 @@ struct qce_cipher_reqctx { unsigned int ivsize; int src_nents; int dst_nents; - bool src_chained; - bool dst_chained; struct scatterlist result_sg; struct sg_table dst_tbl; struct scatterlist *dst_sg; diff --git a/drivers/crypto/qce/dma.c b/drivers/crypto/qce/dma.c index 378cb768647f..4797e795c9b9 100644 --- a/drivers/crypto/qce/dma.c +++ b/drivers/crypto/qce/dma.c @@ -54,58 +54,6 @@ void qce_dma_release(struct qce_dma_data *dma) kfree(dma->result_buf); } -int qce_mapsg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir, bool chained) -{ - int err; - - if (chained) { - while (sg) { - err = dma_map_sg(dev, sg, 1, dir); - if (!err) - return -EFAULT; - sg = sg_next(sg); - } - } else { - err = dma_map_sg(dev, sg, nents, dir); - if (!err) - return -EFAULT; - } - - return nents; -} - -void qce_unmapsg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir, bool chained) -{ - if (chained) - while (sg) { - dma_unmap_sg(dev, sg, 1, dir); - sg = sg_next(sg); - } - else - dma_unmap_sg(dev, sg, nents, dir); -} - -int qce_countsg(struct scatterlist *sglist, int nbytes, bool *chained) -{ - struct scatterlist *sg = sglist; - int nents = 0; - - if (chained) - *chained = false; - - while (nbytes > 0 && sg) { - nents++; - nbytes -= sg->length; - if (!sg_is_last(sg) && (sg + 1)->length == 0 && chained) - *chained = true; - sg = sg_next(sg); - } - - return nents; -} - struct scatterlist * qce_sgtable_add(struct sg_table *sgt, struct scatterlist *new_sgl) { diff --git a/drivers/crypto/qce/dma.h b/drivers/crypto/qce/dma.h index 65bedb81de0b..130235d17bb4 100644 --- a/drivers/crypto/qce/dma.h +++ b/drivers/crypto/qce/dma.h @@ -49,11 +49,6 @@ int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in, dma_async_tx_callback cb, void *cb_param); void qce_dma_issue_pending(struct qce_dma_data *dma); int qce_dma_terminate_all(struct qce_dma_data *dma); -int qce_countsg(struct scatterlist *sg_list, int nbytes, bool *chained); -void qce_unmapsg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir, bool chained); -int qce_mapsg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir, bool chained); struct scatterlist * qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add); diff --git a/drivers/crypto/qce/sha.c b/drivers/crypto/qce/sha.c index be2f5049256a..0c9973ec80eb 100644 --- a/drivers/crypto/qce/sha.c +++ b/drivers/crypto/qce/sha.c @@ -51,9 +51,8 @@ static void qce_ahash_done(void *data) if (error) dev_dbg(qce->dev, "ahash dma termination error (%d)\n", error); - qce_unmapsg(qce->dev, req->src, rctx->src_nents, DMA_TO_DEVICE, - rctx->src_chained); - qce_unmapsg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE, 0); + dma_unmap_sg(qce->dev, req->src, rctx->src_nents, DMA_TO_DEVICE); + dma_unmap_sg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE); memcpy(rctx->digest, result->auth_iv, digestsize); if (req->result) @@ -92,16 +91,14 @@ static int qce_ahash_async_req_handle(struct crypto_async_request *async_req) rctx->authklen = AES_KEYSIZE_128; } - rctx->src_nents = qce_countsg(req->src, req->nbytes, - &rctx->src_chained); - ret = qce_mapsg(qce->dev, req->src, rctx->src_nents, DMA_TO_DEVICE, - rctx->src_chained); + rctx->src_nents = sg_nents_for_len(req->src, req->nbytes); + ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, DMA_TO_DEVICE); if (ret < 0) return ret; sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ); - ret = qce_mapsg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE, 0); + ret = dma_map_sg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE); if (ret < 0) goto error_unmap_src; @@ -121,10 +118,9 @@ static int qce_ahash_async_req_handle(struct crypto_async_request *async_req) error_terminate: qce_dma_terminate_all(&qce->dma); error_unmap_dst: - qce_unmapsg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE, 0); + dma_unmap_sg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE); error_unmap_src: - qce_unmapsg(qce->dev, req->src, rctx->src_nents, DMA_TO_DEVICE, - rctx->src_chained); + dma_unmap_sg(qce->dev, req->src, rctx->src_nents, DMA_TO_DEVICE); return ret; } diff --git a/drivers/crypto/qce/sha.h b/drivers/crypto/qce/sha.h index 286f0d5397f3..236bb5e9ae75 100644 --- a/drivers/crypto/qce/sha.h +++ b/drivers/crypto/qce/sha.h @@ -36,7 +36,6 @@ struct qce_sha_ctx { * @flags: operation flags * @src_orig: original request sg list * @nbytes_orig: original request number of bytes - * @src_chained: is source scatterlist chained * @src_nents: source number of entries * @byte_count: byte count * @count: save count in states during update, import and export @@ -55,7 +54,6 @@ struct qce_sha_reqctx { unsigned long flags; struct scatterlist *src_orig; unsigned int nbytes_orig; - bool src_chained; int src_nents; __be32 byte_count[2]; u64 count; |