crypto: qce - Add support for AEAD algorithms

Introduce support to enable following algorithms in Qualcomm Crypto Engine.

- authenc(hmac(sha1),cbc(des))
- authenc(hmac(sha1),cbc(des3_ede))
- authenc(hmac(sha256),cbc(des))
- authenc(hmac(sha256),cbc(des3_ede))
- authenc(hmac(sha256),cbc(aes))
- ccm(aes)
- rfc4309(ccm(aes))

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qce - Add mode for rfc4309

rf4309 is the specification that uses aes ccm algorithms with IPsec
security packets. Add a submode to identify rfc4309 ccm(aes) algorithm
in the crypto driver.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qce - Remove totallen and offset in qce_start

totallen is used to get the size of the data to be transformed.
This is also available via nbytes or cryptlen in the qce_sha_reqctx
and qce_cipher_ctx. Similarly offset convey nothing for the supported
encryption and authentication transformations and is always 0.
Remove these two redundant parameters in qce_start.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qce - support zero length test vectors

crypto test module passes zero length vectors as test input to sha-1 and
sha-256. To provide correct output for these vectors, hash zero support
has been added as in other crypto drivers.

Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qce - handle AES-XTS cases that qce fails

QCE hangs when presented with an AES-XTS request whose length is larger
than QCE_SECTOR_SIZE (512-bytes), and is not a multiple of it. Let the
fallback cipher handle them.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qce - switch to skcipher API

Commit 7a7ffe65c8c5 ("crypto: skcipher - Add top-level skcipher interface")
dated 20 august 2015 introduced the new skcipher API which is supposed to
replace both blkcipher and ablkcipher. While all consumers of the API have
been converted long ago, some producers of the ablkcipher remain, forcing
us to keep the ablkcipher support routines alive, along with the matching
code to expose [a]blkciphers via the skcipher API.

So switch this driver to the skcipher API, allowing us to finally drop the
ablkcipher code in the near future.

Reviewed-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 and
only version 2 as published by the free software foundation this
program is distributed in the hope that it will be useful but
without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more details

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 294 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.825281744@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

crypto: qce - fix sparse warnings

Fix few sparse warnings of type:
- sparse: incorrect type in argument
- sparse: incorrect type in initializer

Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qce - Qualcomm crypto engine driver

The driver is separated by functional parts. The core part
implements a platform driver probe and remove callbaks.
The probe enables clocks, checks crypto version, initialize
and request dma channels, create done tasklet and init
crypto queue and finally register the algorithms into crypto
core subsystem.

- DMA and SG helper functions
implement dmaengine and sg-list helper functions used by
other parts of the crypto driver.

- ablkcipher algorithms
implementation of AES, DES and 3DES crypto API callbacks,
the crypto register alg function, the async request handler
and its dma done callback function.

- SHA and HMAC transforms
implementation and registration of ahash crypto type.
It includes sha1, sha256, hmac(sha1) and hmac(sha256).

- infrastructure to setup the crypto hw
contains functions used to setup/prepare hardware registers for
all algorithms supported by the crypto block. It also exports
few helper functions needed by algorithms:
- to check hardware status
- to start crypto hardware
- to translate data stream to big endian form

Adds register addresses and bit/masks used by the driver
as well.

Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>