linux.git/drivers/crypto/sunxi-ss, branch v4.18

crypto: sunxi-ss - Add MODULE_ALIAS to sun4i-ss

2018-02-22T14:16:15+00:00

The MODULE_ALIAS is required to enable the sun4i-ss driver to load
automatically when built at a module. Tested on a Cubietruck.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Signed-off-by: Peter Robinson 
Signed-off-by: Herbert Xu

crypto: sun4i_ss_prng - convert lock to _bh in sun4i_ss_prng_generate

2018-02-08T11:38:14+00:00

Lockdep detects a possible deadlock in sun4i_ss_prng_generate() and
throws an "inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage" warning.
Disabling softirqs to fix this.

Fixes: b8ae5c7387ad ("crypto: sun4i-ss - support the Security System PRNG")
Signed-off-by: Artem Savkov 
Signed-off-by: Herbert Xu

crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng_generate

2018-02-08T11:38:13+00:00

According to crypto/rng.h generate function should return 0 on success
and < 0 on error.

Fixes: b8ae5c7387ad ("crypto: sun4i-ss - support the Security System PRNG")
Signed-off-by: Artem Savkov 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - support the Security System PRNG

2017-07-18T09:50:55+00:00

The Security System has a PRNG, this patch adds support for it via
crypto_rng.

Signed-off-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - fix large block size support

2017-06-19T06:19:52+00:00

The run-time self-tests fail quite early, as soon as the input block
size is larger than 64 bytes:

  alg: hash: Test 4 failed for sha1-sun4i-ss
  00000000: b9 c9 1e 52 c0 26 d8 39 81 ff f2 3c 99 b1 27 b2
  00000010: 30 d6 c9 85

One thing to notice is the value of the last word, which is the one
expected (it can sometime be the last two words). The datasheet isn't
very clear about when the digest is ready to retrieve and is seems the
bit SS_DATA_END is cleared when the digest was computed *but* that
doesn't mean the digest is ready to retrieve in the registers.

A ndelay(1) is added before reading the computed digest to ensure it is
available in the SS_MD[] registers.

Signed-off-by: Antoine Tenart 
Tested-by: Corentin Labbe 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - add the CRYPTO_ALG_KERN_DRIVER_ONLY flag

2017-06-19T06:19:51+00:00

The CRYPTO_ALG_KERN_DRIVER_ONLY flag is set for hardware accelerated
ciphers accessible through a kernel driver only. This is the case for
ciphers exposed by the sun4i-ss driver. This patch sets this flag.

Signed-off-by: Antoine Tenart 
Tested-by: Corentin Labbe 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - move from ablkcipher to skcipher API

2017-06-19T06:19:51+00:00

Update the sun4i-ss driver to use the skcipher API instead of the old
ablkcipher one. It's a bit more tricky than s/ablkcipher/skcipher/, but
still nothing special and the driver's logic stays the same.

Signed-off-by: Antoine Tenart 
Tested-by: Corentin Labbe 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - use GENMASK to generate masks

2017-06-19T06:19:51+00:00

Use the GENMASK helper instead of custom calculations to generate masks,
It also helps the readability.

Signed-off-by: Antoine Tenart 
Tested-by: Corentin Labbe 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - simplify the appended bit assignment

2017-06-19T06:19:51+00:00

A bit is appended at the end of the input buffer for sha1. Simplify the
code assigning it.

Signed-off-by: Antoine Tenart 
Tested-by: Corentin Labbe 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - simplify the pad length calculation

2017-06-19T06:19:50+00:00

When sending the last block of data to the engine, it should be padded
so that the total length of the request can be given to the engine as
the last 2 words of the last 64 bytes block.

Simplify the calculation of this pad offset.

Signed-off-by: Antoine Tenart 
Tested-by: Corentin Labbe 
Acked-by: Corentin Labbe 
Signed-off-by: Herbert Xu