In case hash key is bigger than algorithm block size, it is hashed.
In this case, memory is allocated to keep this hash in hashed_key.
hashed_key has to be freed on the key_dma dma mapping error path.
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Reviewed-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

(struct caam_ctx) ctx->key_dma needs to be unmapped
when context is cleaned up.
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add support for the following combinations:
-encryption: null
-authentication: md5, sha* (1, 224, 256, 384, 512)
Signed-off-by: NTudor Ambarus <tudor.ambarus@freescale.com>
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Commit 61bb86bb
("crypto: caam - set descriptor sharing type to SERIAL")
changed the descriptor sharing mode from SHARE_WAIT to SHARE_SERIAL.

All descriptor commands that handle the "ok to share" and
"error propagation" settings should also go away, since they have no
meaning for SHARE_SERIAL.
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Found by the kbuild test robot, the first argument to caam_init_rng
has a spurious ampersand.
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch allocates memory from DMAable region to the caam_rng_ctx object,
earlier it had been statically allocated which resulted in errorneous
behaviour on inserting the caamrng module at the runtime.
Signed-off-by: NNitesh Lal <NiteshNarayanLal@freescale.com>
Acked-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

My guess is that this little endian configuration is never found in real
life, but if it were then the writel() arguments are in the wrong order
so the driver would crash immediately.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

SEC ERA has to be retrieved by reading the "fsl,sec-era" property
from the device tree. This property is updated/filled in by
u-boot.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Reviewed-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The SEC Controller driver creates platform devices for it's child job ring nodes.
Currently the driver uses for_each_compatible routine which traverses
the whole device tree to create the job rings for the platform device.
The patch changes this to search for the compatible property of job ring
only in the child nodes i.e., the job rings are created as per the number
of children associated with the crypto node.
Signed-off-by: NNitesh Lal <NiteshNarayanLal@freescale.com>
Reviewed-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Use the common helper function crypto_authenc_extractkeys() for key
parsing.
Also fix the key buffer overflow condition: use split key pad length
instead of authentication key length.
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

For aead case when source and destination buffers are different,
there is an incorrect assumption that the source length includes the ICV
length. Fix this, since it leads to an oops when using sg_count() to
find the number of nents in the scatterlist:

Unable to handle kernel paging request for data at address 0x00000004
Faulting instruction address: 0xf91f7634
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=8 P4080 DS
Modules linked in: caamalg(+) caam_jr caam
CPU: 1 PID: 1053 Comm: cryptomgr_test Not tainted 3.11.0 #16
task: eeb24ab0 ti: eeafa000 task.ti: eeafa000
NIP: f91f7634 LR: f91f7f24 CTR: f91f7ef0
REGS: eeafbbc0 TRAP: 0300   Not tainted  (3.11.0)
MSR: 00029002 <CE,EE,ME>  CR: 44044044  XER: 00000000
DEAR: 00000004, ESR: 00000000

GPR00: f91f7f24 eeafbc70 eeb24ab0 00000002 ee8e0900 ee8e0800 00000024 c45c4462
GPR08: 00000010 00000000 00000014 0c0e4000 24044044 00000000 00000000 c0691590
GPR16: eeab0000 eeb23000 00000000 00000000 00000000 00000001 00000001 eeafbcc8
GPR24: 000000d1 00000010 ee2d5000 ee49ea10 ee49ea10 ee46f640 ee46f640 c0691590
NIP [f91f7634] aead_edesc_alloc.constprop.14+0x144/0x780 [caamalg]
LR [f91f7f24] aead_encrypt+0x34/0x288 [caamalg]
Call Trace:
[eeafbc70] [a1004000] 0xa1004000 (unreliable)
[eeafbcc0] [f91f7f24] aead_encrypt+0x34/0x288 [caamalg]
[eeafbcf0] [c020d77c] __test_aead+0x3ec/0xe20
[eeafbe20] [c020f35c] test_aead+0x6c/0xe0
[eeafbe40] [c020f420] alg_test_aead+0x50/0xd0
[eeafbe60] [c020e5e4] alg_test+0x114/0x2e0
[eeafbee0] [c020bd1c] cryptomgr_test+0x4c/0x60
[eeafbef0] [c0047058] kthread+0xa8/0xb0
[eeafbf40] [c000eb0c] ret_from_kernel_thread+0x5c/0x64
Instruction dump:
69084321 7d080034 5508d97e 69080001 0f080000 81290024 552807fe 0f080000
3a600001 5529003a 2f8a0000 40dd0028 <80e90004> 3ab50001 8109000c 70e30002
---[ end trace b3c3e23925c7484e ]---

While here, add a tcrypt mode for making it easy to test authenc
(needed for triggering case above).
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

linuxnext currently doesn't compile with the powerpc mpc85xx_defconfig
giving:

  drivers/crypto/caam/jr.c: In function 'caam_jr_probe':
  drivers/crypto/caam/jr.c:468:2: error: implicit declaration of function 'of_iomap' [-Werror=implicit-function-declaration]

In:
  commit 313ea293
  Author: Ruchika Gupta <ruchika.gupta@freescale.com>
  crypto: caam - Add Platform driver for Job Ring

We added a reference to of_iomap but did add the necessary include file.

The below adds this include.
Signed-off-by: NMichael Neuling <mikey@neuling.org>
Acked-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

- Earlier interface layers - caamalg, caamhash, caamrng were
  directly using the Controller driver private structure to access
  the Job ring.
- Changed the above to use alloc/free API's provided by Job Ring Drive
Signed-off-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: NGarg Vakul-B16394 <vakul@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

With each of the Job Ring available as a platform device, the
Job Ring driver needs to take care of allocation/deallocation
of the Job Rings to the above interface layers. Added APIs
in Job Ring Driver to allocate/free Job rings
Signed-off-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: NGarg Vakul-B16394 <vakul@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The SEC Job Rings are now available as individual devices.
This would enable sharing of job rings between kernel and
user space. Job Rings can now be dynamically bound/unbound
from kernel.

Changes are made in the following layers of CAAM Driver
1. Controller driver
        - Does basic initialization of CAAM Block.
        - Creates platform devices for Job Rings.
(Earlier the initialization of Job ring  was done
 by the controller driver)

2. JobRing Platform driver
        - Manages the platform Job Ring devices created
          by the controller driver
Signed-off-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: NGarg Vakul-B16394 <vakul@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Replace some instances of of_irq_map_one()/irq_create_of_mapping() and
of_irq_to_resource() by the simpler equivalent irq_of_parse_and_map().
Signed-off-by: NThierry Reding <treding@nvidia.com>
Acked-by: NRob Herring <rob.herring@calxeda.com>
[grant.likely: resolved conflicts with core code renames]
Signed-off-by: NGrant Likely <grant.likely@linaro.org>

Powerpc is a mess of implicit includes by prom.h. Add the necessary
explicit includes to drivers in preparation of prom.h cleanup.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
Acked-by: NGrant Likely <grant.likely@linaro.org>

KMap the buffers before copying trailing bytes during hmac into a session
temporary buffer. This is required if pinned buffer from user-space is send
during hmac and is safe even if hmac request is generated from within kernel.
Signed-off-by: NYashpal Dutta <yashpal.dutta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

RNG4 block contains multiple (i.e. 2) state handles that can be
initialized. This patch adds the necessary code for detecting
which of the two state handles has been instantiated by another
piece of software e.g. u-boot and instantiate the other one (or
both if none was instantiated). Only the state handle(s)
instantiated by this driver will be deinstantiated when removing
the module.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

RNG4 defines in desc.h were incomplete (bits AI & PS were missing),
while SK was set as an ALG related bit. This patchs adds the
missing bits and corrects the SK bit.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

If the caam driver module instantiates the RNG state handle 0, then
upon the removal of the module, the RNG state handle is left
initialized. This patch takes care of reverting the state of the
handle back to its previous uninstantatied state.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch splits the RNG4 state handle instantiation
function into two parts: one that handles the creation
of the descriptor which instructs the CAAM to perform
the instantiation of the state handle and another
function that performs the running of the said descriptor
using the DECO debug mechanism.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The RNG4 block in CAAM needs to be 'seeded' first before being used
for generating pseudo-random data. The 'seeding' is done by getting
entropy from the TRNG ring oscillator. The RTFRQMAX register controls
the maximum allowable number of samples that can be aquired during
an entropy sample. Depending on the clock at which the RNG4 block
(and for that matter the SEC block) runs, it's possible that a
hard-coded value for the maximum frequency is inadequate, i.e. more
samples than needed are taken. This is an error, and thus the RNG4
block doesn't get initialized.  The patch attempts to alleviate
this issue by trying with progressivly larger frequencies, until
the number of samples is adequate.
This patch also fixes how a descriptor is deemed as being finished:
instead of checking the VALID field in the DECO debug register,
it makes sure that the DECO is idle, by checking the DECO state field
of the said register.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

If the CAAM driver initialization failed (due to various reasons, e.g. RNG4
initialization failed), then the registration of hash/algorithms/rng shouldn't
take place. This patch adds the necessary code to prevent this registration.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The way the DECO runs a descriptor through the direct (debug)
interface is different from the JRI interface: the DECO will
continue to try and execute the next commands, after the descriptor
buffer has ended. This leads to unpredictable results and possibly
to locking up of the DECO. This patch adds a halt command at the
end of the descriptor to ensure the DECO halts when it reaches
the end of the descriptor buffer.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch adds an option to the Kconfig file for
SEC which enables the user to see the debug messages
that are printed inside the SEC driver.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

CAAM driver contains one macro (xstr) used for printing
the line location in a file where a memdump is done. This patch
replaces the xstr macro with the already existing __stringify
macro that performs the same function.
Signed-off-by: NAlex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Remove the dependency of RNG instantiation on Job Ring. Now
RNG instantiation for devices with RNG version > 4 is done
by directly programming DECO 0.
Signed-off-by: NRuchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

DESC_JOB_IO_LEN is a generic macro which indicates the space required in
the descriptor for placing SEQIN/OUT commands, job descriptor header,
shared descriptor pointer. Moving it to descriptor construction file
which can be supposedly included by different algo offload files.

Change-Id: Ic8900990d465e9079827b0c7fcacc61766d7efb6
Signed-off-by: NVakul Garg <vakul@freescale.com>
Reviewed-by: NGeanta Neag Horia Ioan-B05471 <horia.geanta@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

When kernel is compiled with CONFIG_SLUB_DEBUG=y and
CRYPTO_MANAGER_DISABLE_TESTS=n, during kernel bootup, the kernel
reports error given below. The root cause is that in function
hash_digest_key(), for allocating descriptor, insufficient memory was
being allocated. The required number of descriptor words apart from
input and output pointers are 8 (instead of 6).

=============================================================================
BUG dma-kmalloc-32 (Not tainted): Redzone overwritten
-----------------------------------------------------------------------------

Disabling lock debugging due to kernel taint
INFO: 0xdec5dec0-0xdec5dec3. First byte 0x0 instead of 0xcc
INFO: Allocated in ahash_setkey+0x60/0x594 age=7 cpu=1 pid=1257
        __kmalloc+0x154/0x1b4
        ahash_setkey+0x60/0x594
        test_hash+0x260/0x5a0
        alg_test_hash+0x48/0xb0
        alg_test+0x84/0x228
        cryptomgr_test+0x4c/0x54
        kthread+0x98/0x9c
        ret_from_kernel_thread+0x64/0x6c
INFO: Slab 0xc0bd0ba0 objects=19 used=2 fp=0xdec5d0d0 flags=0x0081
INFO: Object 0xdec5dea0 @offset=3744 fp=0x5c200014

Bytes b4 dec5de90: 00 00 00 00 00 00 00 00 5a 5a 5a 5a 5a 5a 5a 5a
........ZZZZZZZZ
Object dec5dea0: b0 80 00 0a 84 41 00 0d f0 40 00 00 00 67 3f c0
.....A...@...g?.
Object dec5deb0: 00 00 00 50 2c 14 00 50 f8 40 00 00 1e c5 d0 00
...P,..P.@......
Redzone dec5dec0: 00 00 00 14                                      ....
Padding dec5df68: 5a 5a 5a 5a 5a 5a 5a 5a
ZZZZZZZZ
Call Trace:
[dec65b60] [c00071b4] show_stack+0x4c/0x168 (unreliable)
[dec65ba0] [c00d4ec8] check_bytes_and_report+0xe4/0x11c
[dec65bd0] [c00d507c] check_object+0x17c/0x23c
[dec65bf0] [c0550a00] free_debug_processing+0xf4/0x294
[dec65c20] [c0550bdc] __slab_free+0x3c/0x294
[dec65c80] [c03f0744] ahash_setkey+0x4e0/0x594
[dec65cd0] [c01ef138] test_hash+0x260/0x5a0
[dec65e50] [c01ef4c0] alg_test_hash+0x48/0xb0
[dec65e70] [c01eecc4] alg_test+0x84/0x228
[dec65ee0] [c01ec640] cryptomgr_test+0x4c/0x54
[dec65ef0] [c005adc0] kthread+0x98/0x9c
[dec65f40] [c000e1ac] ret_from_kernel_thread+0x64/0x6c
FIX dma-kmalloc-32: Restoring 0xdec5dec0-0xdec5dec3=0xcc

Change-Id: I0c7a1048053e811025d1c3b487940f87345c8f5d
Signed-off-by: NVakul Garg <vakul@freescale.com>
CC: <stable@vger.kernel.org> #3.9
Reviewed-by: NGeanta Neag Horia Ioan-B05471 <horia.geanta@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add Class Context SRC / DEST flags for the LOAD & STORE commands
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add define for "Adjust Output Frame Length" in order to
set the AOFL bit in the IPsec ESP Decapsulation PDB.
Signed-off-by: NAnca-Jeanina Floarea <anca.floarea@freescale.com>
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

add defines for:
    append load immediate command
    setting SEQ LIODN equal to the Non-SEQ LIODN for the job
    replace job descriptor command
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Store command has options to overwrite the Job Desc, Shared Desc or
the entire Descriptor in memory, using the address from
which the Descriptor was fetched.
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

added all supported math funtion on 8 byte boundary with
immediate flag bit set automatically

added MATH_SRC0_DPOVRD & MATH_SRC1_DPOVRD

The function/defines above are needed for creating descriptors
longer than 64 words
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Perform 32-bit left shift of DEST and concatenate with
left 32 bits of SRC1. {DEST[31:0],SRC1[63:32]}
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Acked-by: NMihai Serb <mihai.serb@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

In case Store command is used with overwrite Shared Descriptor
feature there is no need for pointer, it is using the
address from which the Shared Descriptor was fetched.
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

SEQ IN PTR command does not require pointer if RTO or PRE bit is set
Updated desc_constr.h accordingly.
Signed-off-by: NAndrei Varvara <andrei.varvara@freescale.com>
Reviewed-by: NPhillips Kim-R1AAHA <Kim.Phillips@freescale.com>
Reviewed-by: NFleming Andrew-AFLEMING <AFLEMING@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

req->assoc is dma mapped BIDIRECTIONAL and unmapped TO_DEVICE.
Since it is read-only for the device, use TO_DEVICE both for mapping
and unmapping.

Cc: <stable@vger.kernel.org> # 3.9, 3.8
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>