diff options
| author | Romain Perier <romain.perier@free-electrons.com> | 2016-06-21 10:08:39 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-06-23 18:29:51 +0800 |
| commit | 85030c5168f1df03a164d47254cc785331f1dfe2 (patch) | |
| tree | 0d8f0077d43d48359535f064cdb0626069c66592 /drivers/crypto/marvell/cipher.c | |
| parent | bf8f91e711926c1fb57629338e30164ecfba9700 (diff) | |
| download | linux-85030c5168f1df03a164d47254cc785331f1dfe2.tar.bz2 | |
crypto: marvell - Add support for chaining crypto requests in TDMA mode
The Cryptographic Engines and Security Accelerators (CESA) supports the
Multi-Packet Chain Mode. With this mode enabled, multiple tdma requests
can be chained and processed by the hardware without software
intervention. This mode was already activated, however the crypto
requests were not chained together. By doing so, we reduce significantly
the number of IRQs. Instead of being interrupted at the end of each
crypto request, we are interrupted at the end of the last cryptographic
request processed by the engine.
This commits re-factorizes the code, changes the code architecture and
adds the required data structures to chain cryptographic requests
together before sending them to an engine (stopped or possibly already
running).
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/cipher.c')
| -rw-r--r-- | drivers/crypto/marvell/cipher.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c index 3eb607cda269..48df03a06066 100644 --- a/drivers/crypto/marvell/cipher.c +++ b/drivers/crypto/marvell/cipher.c @@ -390,6 +390,7 @@ static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req, goto err_free_tdma; basereq->chain = chain; + basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ; return 0; @@ -447,7 +448,6 @@ static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req, mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY, CESA_SA_DESC_CFG_OP_MSK); - /* TODO: add a threshold for DMA usage */ if (cesa_dev->caps->has_tdma) ret = mv_cesa_ablkcipher_dma_req_init(req, tmpl); else |