From 13fb8fd7a81923f7a64b4e688fe0bdaf1ea26adf Mon Sep 17 00:00:00 2001 From: LABBE Corentin Date: Wed, 23 Sep 2015 13:55:27 +0200 Subject: crypto: caam - dma_map_sg can handle chained SG The caam 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 dma_map_sg_chained, dma_unmap_sg_chained and __sg_count functions. Signed-off-by: LABBE Corentin Signed-off-by: Herbert Xu --- drivers/crypto/caam/caamalg.c | 94 ++++++++++++++++--------------------------- 1 file changed, 34 insertions(+), 60 deletions(-) (limited to 'drivers/crypto/caam/caamalg.c') diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index ba79d638f782..ad0d1ec51dd5 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1708,11 +1708,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, /* * aead_edesc - s/w-extended aead descriptor * @assoc_nents: number of segments in associated data (SPI+Seq) scatterlist - * @assoc_chained: if source is chained * @src_nents: number of segments in input scatterlist - * @src_chained: if source is chained * @dst_nents: number of segments in output scatterlist - * @dst_chained: if destination is chained * @iv_dma: dma address of iv for checking continuity and link table * @desc: h/w descriptor (variable length; must not exceed MAX_CAAM_DESCSIZE) * @sec4_sg_bytes: length of dma mapped sec4_sg space @@ -1721,11 +1718,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, */ struct aead_edesc { int assoc_nents; - bool assoc_chained; int src_nents; - bool src_chained; int dst_nents; - bool dst_chained; dma_addr_t iv_dma; int sec4_sg_bytes; dma_addr_t sec4_sg_dma; @@ -1736,9 +1730,7 @@ struct aead_edesc { /* * ablkcipher_edesc - s/w-extended ablkcipher descriptor * @src_nents: number of segments in input scatterlist - * @src_chained: if source is chained * @dst_nents: number of segments in output scatterlist - * @dst_chained: if destination is chained * @iv_dma: dma address of iv for checking continuity and link table * @desc: h/w descriptor (variable length; must not exceed MAX_CAAM_DESCSIZE) * @sec4_sg_bytes: length of dma mapped sec4_sg space @@ -1747,9 +1739,7 @@ struct aead_edesc { */ struct ablkcipher_edesc { int src_nents; - bool src_chained; int dst_nents; - bool dst_chained; dma_addr_t iv_dma; int sec4_sg_bytes; dma_addr_t sec4_sg_dma; @@ -1759,18 +1749,15 @@ struct ablkcipher_edesc { static void caam_unmap(struct device *dev, struct scatterlist *src, struct scatterlist *dst, int src_nents, - bool src_chained, int dst_nents, bool dst_chained, + int dst_nents, dma_addr_t iv_dma, int ivsize, dma_addr_t sec4_sg_dma, int sec4_sg_bytes) { if (dst != src) { - dma_unmap_sg_chained(dev, src, src_nents ? : 1, DMA_TO_DEVICE, - src_chained); - dma_unmap_sg_chained(dev, dst, dst_nents ? : 1, DMA_FROM_DEVICE, - dst_chained); + dma_unmap_sg(dev, src, src_nents ? : 1, DMA_TO_DEVICE); + dma_unmap_sg(dev, dst, dst_nents ? : 1, DMA_FROM_DEVICE); } else { - dma_unmap_sg_chained(dev, src, src_nents ? : 1, - DMA_BIDIRECTIONAL, src_chained); + dma_unmap_sg(dev, src, src_nents ? : 1, DMA_BIDIRECTIONAL); } if (iv_dma) @@ -1785,8 +1772,7 @@ static void aead_unmap(struct device *dev, struct aead_request *req) { caam_unmap(dev, req->src, req->dst, - edesc->src_nents, edesc->src_chained, edesc->dst_nents, - edesc->dst_chained, 0, 0, + edesc->src_nents, edesc->dst_nents, 0, 0, edesc->sec4_sg_dma, edesc->sec4_sg_bytes); } @@ -1798,8 +1784,8 @@ static void ablkcipher_unmap(struct device *dev, int ivsize = crypto_ablkcipher_ivsize(ablkcipher); caam_unmap(dev, req->src, req->dst, - edesc->src_nents, edesc->src_chained, edesc->dst_nents, - edesc->dst_chained, edesc->iv_dma, ivsize, + edesc->src_nents, edesc->dst_nents, + edesc->iv_dma, ivsize, edesc->sec4_sg_dma, edesc->sec4_sg_bytes); } @@ -2169,22 +2155,18 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, struct aead_edesc *edesc; int sgc; bool all_contig = true; - bool src_chained = false, dst_chained = false; int sec4_sg_index, sec4_sg_len = 0, sec4_sg_bytes; unsigned int authsize = ctx->authsize; if (unlikely(req->dst != req->src)) { - src_nents = sg_count(req->src, req->assoclen + req->cryptlen, - &src_chained); + src_nents = sg_count(req->src, req->assoclen + req->cryptlen); dst_nents = sg_count(req->dst, req->assoclen + req->cryptlen + - (encrypt ? authsize : (-authsize)), - &dst_chained); + (encrypt ? authsize : (-authsize))); } else { src_nents = sg_count(req->src, req->assoclen + req->cryptlen + - (encrypt ? authsize : 0), - &src_chained); + (encrypt ? authsize : 0)); } /* Check if data are contiguous. */ @@ -2207,37 +2189,35 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, } if (likely(req->src == req->dst)) { - sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_BIDIRECTIONAL, src_chained); + sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, + DMA_BIDIRECTIONAL); if (unlikely(!sgc)) { dev_err(jrdev, "unable to map source\n"); kfree(edesc); return ERR_PTR(-ENOMEM); } } else { - sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_TO_DEVICE, src_chained); + sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, + DMA_TO_DEVICE); if (unlikely(!sgc)) { dev_err(jrdev, "unable to map source\n"); kfree(edesc); return ERR_PTR(-ENOMEM); } - sgc = dma_map_sg_chained(jrdev, req->dst, dst_nents ? : 1, - DMA_FROM_DEVICE, dst_chained); + sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1, + DMA_FROM_DEVICE); if (unlikely(!sgc)) { dev_err(jrdev, "unable to map destination\n"); - dma_unmap_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_TO_DEVICE, src_chained); + dma_unmap_sg(jrdev, req->src, src_nents ? : 1, + DMA_TO_DEVICE); kfree(edesc); return ERR_PTR(-ENOMEM); } } edesc->src_nents = src_nents; - edesc->src_chained = src_chained; edesc->dst_nents = dst_nents; - edesc->dst_chained = dst_chained; edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) + desc_bytes; *all_contig_ptr = all_contig; @@ -2467,22 +2447,21 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request bool iv_contig = false; int sgc; int ivsize = crypto_ablkcipher_ivsize(ablkcipher); - bool src_chained = false, dst_chained = false; int sec4_sg_index; - src_nents = sg_count(req->src, req->nbytes, &src_chained); + src_nents = sg_count(req->src, req->nbytes); if (req->dst != req->src) - dst_nents = sg_count(req->dst, req->nbytes, &dst_chained); + dst_nents = sg_count(req->dst, req->nbytes); if (likely(req->src == req->dst)) { - sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_BIDIRECTIONAL, src_chained); + sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, + DMA_BIDIRECTIONAL); } else { - sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_TO_DEVICE, src_chained); - sgc = dma_map_sg_chained(jrdev, req->dst, dst_nents ? : 1, - DMA_FROM_DEVICE, dst_chained); + sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, + DMA_TO_DEVICE); + sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1, + DMA_FROM_DEVICE); } iv_dma = dma_map_single(jrdev, req->info, ivsize, DMA_TO_DEVICE); @@ -2511,9 +2490,7 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request } edesc->src_nents = src_nents; - edesc->src_chained = src_chained; edesc->dst_nents = dst_nents; - edesc->dst_chained = dst_chained; edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ablkcipher_edesc) + desc_bytes; @@ -2646,22 +2623,21 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc( bool iv_contig = false; int sgc; int ivsize = crypto_ablkcipher_ivsize(ablkcipher); - bool src_chained = false, dst_chained = false; int sec4_sg_index; - src_nents = sg_count(req->src, req->nbytes, &src_chained); + src_nents = sg_count(req->src, req->nbytes); if (unlikely(req->dst != req->src)) - dst_nents = sg_count(req->dst, req->nbytes, &dst_chained); + dst_nents = sg_count(req->dst, req->nbytes); if (likely(req->src == req->dst)) { - sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_BIDIRECTIONAL, src_chained); + sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, + DMA_BIDIRECTIONAL); } else { - sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, - DMA_TO_DEVICE, src_chained); - sgc = dma_map_sg_chained(jrdev, req->dst, dst_nents ? : 1, - DMA_FROM_DEVICE, dst_chained); + sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, + DMA_TO_DEVICE); + sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1, + DMA_FROM_DEVICE); } /* @@ -2690,9 +2666,7 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc( } edesc->src_nents = src_nents; - edesc->src_chained = src_chained; edesc->dst_nents = dst_nents; - edesc->dst_chained = dst_chained; edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ablkcipher_edesc) + desc_bytes; -- cgit v1.2.3-59-g8ed1b