SEC v4.x were only 36-bit, SEC v5+ are 40-bit capable.
Also set a DMA mask for any job ring devices created.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

caam_read copies random bytes from two buffers into output.

caam rng can fill empty buffer 0xffff bytes at a time,
but the buffer sizes are rounded down to multiple of cacheline size.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

support chained scatterlists for aead, ablkcipher and ahash.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>

- fix dma unmap leak
- un-unlikely src == dst, due to experience with AF_ALG
Signed-off-by: NKudupudi Ugendreshwar <B38865@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

caam supports and registers unkeyed sha algorithms and md5.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

caam supports ahash hmac with sha algorithms and md5.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

- rename scatterlist and link_tbl functions
- link_tbl changed to sec4_sg
- sg_to_link_tbl_one changed to dma_to_sec4_sg_one,
  since no scatterlist is use
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

create separate files for split key generation and scatterlist functions.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

remove caam_jr_register and caam_jr_deregister
to allow sharing of job rings.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

functions for external storage of seq in/out lengths,
i.e., for 32-bit lengths.

These type-dependent functions automatically determine whether to
store the length internally (embedded in the command header word) or
externally (after the address pointer), based on size of the type
given.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add a PDB header file to support building protocol descriptors.
Signed-off-by: NSteve Cornelius <sec@pobox.com>
Signed-off-by: NHemant Agrawal <hemant@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

init_desc, by always ORing with 1 for the descriptor header inclusion
into the descriptor length, and init_sh_desc_pdb, by always specifying
the descriptor length modification for the PDB via options, would not
allow for odd length PDBs to be embedded in the constructed descriptor
length.  Fix this by simply changing the OR to an addition.

also round-up pdb_bytes to the next SEC command unit size, to
allow for, e.g., optional packet header bytes that aren't a
multiple of CAAM_CMD_SZ.
Reported-by: NRadu-Andrei BULIE <radu.bulie@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Cc: Yashpal Dutta <yashpal.dutta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

In case of protocol acceleration descriptors, Shared descriptor header must
carry size of header length + PDB length in words which will be skipped by
DECO while processing descriptor to provide first command word offset
Signed-off-by: NYashpal Dutta <yashpal.dutta@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

SEC4 h/w gets configured in 32- vs. 36-bit physical
addressing modes depending on the size of dma_addr_t,
which is not always equal to sizeof(u32 *).

Also fixed alignment of a dma_unmap call whilst in there.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

presumably leftovers from possible macro development.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

In some device trees of previous version, there were string "fsl,sec4.0".
To be backward compatible with device trees, we have CAAM driver first
check "fsl,sec-v4.0", if it fails, then check for "fsl,sec4.0".
Signed-off-by: NShengzhou Liu <Shengzhou.Liu@freescale.com>
Acked-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/ctrl.c: In function 'caam_probe':
drivers/crypto/caam/ctrl.c:49:6: warning: unused variable 'd' [-Wunused-variable]
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

sha224 and 384 support extends caam noise to 21 lines.  Do the same
as commit 5b859b6e "crypto: talitos - be less noisy on startup", but
for caam, and display:

caam ffe300000.crypto: fsl,sec-v4.0 algorithms registered in /proc/crypto
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NHemant Agrawal <hemant@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The added CRYPTO_ALG_KERN_DRIVER_ONLY indicates whether a cipher
is only available via a kernel driver. If the cipher implementation
might be available by using an instruction set or by porting the
kernel code, then it must not be set.
Signed-off-by: NNikos Mavrogiannopoulos <nmav@gnutls.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Access to the SEC4 DECOs (DEscriptor COntrollers) (for debug purposes)
isn't supported or used, and its register access initialization code
erroneously makes illegal i/o accesses that show up as errors when
run under simulation.  Remove it until proper support (via DECORR)
is added.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

the polarity of the definition for error propagation was reverse
in the initial desc.h.  Fix desc.h and its users.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

manual removal of double-spaces - no non-whitespace changes.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

this is the result of running unexpand -a on desc.h.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch converts the drivers in drivers/crypto/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Cc: James Hsiao <jhsiao@amcc.com>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NVladimir Zapolskiy <vzapolskiy@gmail.com>
Acked-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

specifically, add these algorithm combinations:

authenc-hmac-md5-cbc-aes-caam
authenc-hmac-md5-cbc-des3_ede-caam
authenc-hmac-md5-cbc-des-caam
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

it will be replaced with S_IFREG anyway
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

caam now supports encrypt and decrypt
for aes, des and 3des
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Job descriptors only contain header and seq pointers.

Other commands are stored in separate shared descriptors
for encrypt, decrypt and givencrypt, stored as arrays
in caam_ctx.

This requires additional macros to create math commands
to calculate assoclen and cryptlen.
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

caam_ctx.key_phys to key_dma

caam_alg_template supports multiple algorithm types
listed in union, which requires cases for
different types in function caam_alg_alloc
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

"aead_authenc" and "ipsec_esp" changed to "aead,"
except for function "ipsec_esp," which is changed
to "init_aead_job."

Variable name of aead_request structures changed
to "req" and name of aead_givcrypt_request structure
changed to "areq"
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/ctrl.c: In function 'caam_probe':
drivers/crypto/caam/ctrl.c:55:23: warning: unused variable 'perfmon'
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

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: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

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: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

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: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

this fixes a build error since cryptodev-2.6 got rebased
to include commit d714d197
"dt: eliminate of_platform_driver shim code".
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

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: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

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: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

remains from descriptor debugging - not required for normal operation.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>