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| author | Romain Perier <romain.perier@free-electrons.com> | 2016-06-21 10:08:34 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-06-23 12:14:03 +0200 |
| commit | bac8e805a30dc2a29c3fdde9d822e59c75e710d7 (patch) | |
| tree | 0eb0fdc0a856f601eab7f627ffe10e5312d90a3b /drivers/crypto/marvell/cesa.h | |
| parent | crypto: marvell - Fix wrong type check in dma functions (diff) | |
| download | linux-bac8e805a30dc2a29c3fdde9d822e59c75e710d7.tar.xz linux-bac8e805a30dc2a29c3fdde9d822e59c75e710d7.zip | |
crypto: marvell - Copy IV vectors by DMA transfers for acipher requests
Add a TDMA descriptor at the end of the request for copying the
output IV vector via a DMA transfer. This is a good way for offloading
as much as processing as possible to the DMA and the crypto engine.
This is also required for processing multiple cipher requests
in chained mode, otherwise the content of the IV vector would be
overwritten by the last processed request.
Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/marvell/cesa.h')
| -rw-r--r-- | drivers/crypto/marvell/cesa.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h index 74071e45ada0..685a627bd9ae 100644 --- a/drivers/crypto/marvell/cesa.h +++ b/drivers/crypto/marvell/cesa.h @@ -275,6 +275,7 @@ struct mv_cesa_op_ctx { #define CESA_TDMA_DUMMY 0 #define CESA_TDMA_DATA 1 #define CESA_TDMA_OP 2 +#define CESA_TDMA_IV 3 /** * struct mv_cesa_tdma_desc - TDMA descriptor @@ -390,6 +391,7 @@ struct mv_cesa_dev_dma { struct dma_pool *op_pool; struct dma_pool *cache_pool; struct dma_pool *padding_pool; + struct dma_pool *iv_pool; }; /** @@ -790,6 +792,9 @@ mv_cesa_tdma_desc_iter_init(struct mv_cesa_tdma_chain *chain) memset(chain, 0, sizeof(*chain)); } +int mv_cesa_dma_add_iv_op(struct mv_cesa_tdma_chain *chain, dma_addr_t src, + u32 size, u32 flags, gfp_t gfp_flags); + struct mv_cesa_op_ctx *mv_cesa_dma_add_op(struct mv_cesa_tdma_chain *chain, const struct mv_cesa_op_ctx *op_templ, bool skip_ctx, |