linux-toradex.git/drivers/crypto/caam, branch v3.0.79

crypto: caam - fix operator precedence in shared descriptor allocation

2011-06-29T23:43:27+00:00

setkey allocates 16 bytes (CAAM_CMD_SZ *
DESC_AEAD_SHARED_TEXT_LEN) shy of what is needed to
store the shared descriptor, resulting in memory
corruption.  Fix this.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - add support for sha512 variants of existing AEAD algorithms

2011-05-19T04:38:00+00:00

In doing so, sha512 sized keys would not fit with the current
descriptor inlining mechanism, so we now calculate whether keys
should be referenced instead by pointers in the shared descriptor.

also, use symbols for descriptor text lengths, and, ahem, unmap and
free key i/o memory in cra_exit.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - remove unused authkeylen from caam_ctx

2011-05-19T04:37:59+00:00

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - fix decryption shared vs. non-shared key setting

2011-05-19T04:37:59+00:00

Key sharing is enabled by default in the shared descriptor.

Using CBC decrypt, AES has to alter the key in order to decrypt.
During high traffic decryption rates, i.e, when sharing starts to
take place, we need to use a different OPERATION option to tell AES
that the key was already altered by the PRIOR descriptor - we need
the following kind of logic:

if ( shared )
    operation where AES uses decryption key (DK=1)
else
    operation where AES uses encryption key (DK=0)

this patch implements this logic using a conditional and
a non-conditional local jump within the decryption job
descriptor.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - platform_bus_type migration

2011-05-19T04:37:58+00:00

this fixes a build error since cryptodev-2.6 got rebased
to include commit d714d1979d7b4df7e2c127407f4014ce71f73cd0
"dt: eliminate of_platform_driver shim code".

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - fix printk recursion for long error texts

2011-05-04T05:15:06+00:00

during recent descriptor development, an Invalid Sequence Command
error triggered a:

BUG: recent printk recursion!

due to insufficient memory allocated for the error text.

The Invalid Sequence Command error text is the longest.
The length of the maximum error string is computed as
the sum of:

"DECO: ": 6
"jump tgt desc idx 255: ": 23
Invalid Sequence Command text: 272
zero termination character: 1

i.e, 302 characters.

Define this maximum error string length in error.h and fix
caam_jr_strstatus callsites.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - remove unused keylen from session context

2011-05-04T05:15:05+00:00

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - remove duplicate dev_err

2011-05-02T23:53:40+00:00

keep the hex error value reporting version (a) to be consistent
with decrypt_done(), and (b) to keep our hardware guys happy.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - remove WAIT-FOR-COMPLETIONs from givencrypt descriptor

2011-05-02T23:53:38+00:00

remains from descriptor debugging - not required for normal operation.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu

crypto: caam - fix queue interface detection

2011-05-02T23:53:35+00:00

The presence of a h/w Queue Interface would fail due to this
cut-n-paste snafu.

Signed-off-by: Kim Phillips 
Signed-off-by: Herbert Xu