[PATCH RFC 00/10] crypto: engine: permit to batch requests

[Corentin Labbe <clabbe.montjoie@gmail.com>]

Hello

The sun8i-ce hardware can work on multiple requests in one batch.
For this it use a task descriptor, and chain them.
For the moment, the driver does not use this mechanism and do requests
one at a time and issue an irq for each.

Using the chaning will permit to issue less interrupts, and increase
thoughput.

But the crypto/engine can enqueue lots of requests but can ran them only
one by one.

This serie introduce a way to batch requests in crypto/engine by
- setting a batch limit (1 by default)
- refactor the prepare/unprepare code to permit to have x requests
  prepared/unprepared at the same time.

For testing the serie, the selftest are not enough, since it issue
request one at a time.
I have used LUKS for testing it.

Please give me what you think about this serie, specially maintainers
which have hardware with the same kind of capability.

Regards

Corentin Labbe (10):
  crypto: sun8i-ce: move iv data to request context
  crypto: sun8i-ce: increase task list size
  crypto: sun8i-ce: split into prepare/run/unprepare
  crypto: sun8i-ce: introduce the slot number
  crypto: engine: transform cur_req in an array
  crypto: engine: introduce ct
  crypto: sun8i-ce: handle slot > 0
  crypto: engine: add slot parameter
  crypto: engine: permit to batch requests
  crypto: sun8i-ce: use the new batch mechanism

 crypto/crypto_engine.c                        |  76 +++++++----
 .../allwinner/sun8i-ce/sun8i-ce-cipher.c      | 121 +++++++++++++-----
 .../crypto/allwinner/sun8i-ce/sun8i-ce-core.c |  17 ++-
 drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h  |  17 ++-
 drivers/crypto/omap-aes-gcm.c                 |   2 +-
 drivers/crypto/omap-aes.c                     |   4 +-
 drivers/crypto/omap-des.c                     |   4 +-
 drivers/crypto/stm32/stm32-cryp.c             |   8 +-
 drivers/crypto/stm32/stm32-hash.c             |   4 +-
 include/crypto/engine.h                       |  27 +++-
 10 files changed, 201 insertions(+), 79 deletions(-)

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2.24.1