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Map the buffers in HIGHMEM before copying trailing bytes during hmac into a session
temporary buffer. This is required if pinned buffer from user-space is send
to CAAM driver during hmac and is safe even if hmac request is generated
from within kernel.
Signed-off-by: Yashpal Dutta <yashpal.dutta@freescale.com>
Change-Id: Ic0d1b5fec4f59befe0c4c4aac2b950667f58ccb6
Reviewed-on: http://git.am.freescale.net:8181/4518
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Reviewed-by: Rivera Jose-B46482 <German.Rivera@freescale.com>
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Merge upstream tree in order to reinstate crct10dif.
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Each call to the co-processor, with exception of the last call, needs to
send data that is multiple of block size. As consequence, any remaining
data is kept in the internal NX context.
This patch fixes a bug in the driver that causes it to save incorrect
data into the context when data is bigger than the block size.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The NX CGM implementation doesn't support zero length messages and the
current implementation has two flaws:
- When the input data length is zero, it ignores the associated data.
- Even when both lengths are zero, it uses the Crypto API to encrypt a
zeroed block using ctr(aes) and because of this it allocates a new
transformation and sets the key for this new tfm. Both operations are
intended to be used only in user context, while the cryptographic
operations can be called in both user and softirq contexts.
This patch replaces the nested Crypto API use and adds two special
cases:
- When input data and associated data lengths are zero: it uses NX ECB
mode to emulate the encryption of a zeroed block using ctr(aes).
- When input data is zero and associated data is available: it uses NX
GMAC mode to calculate the associated data MAC.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The NX XCBC implementation doesn't support zero length messages and
because of that NX is currently returning a hard-coded hash for zero
length messages. However this approach is incorrect since the hash value
also depends on which key is used.
This patch removes the hard-coded hash and replace it with an
implementation based on the RFC 3566 using ECB.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch updates the NX driver to perform several hyper calls when necessary
so that the length limits of scatter/gather lists are respected.
Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch updates the NX driver to perform several hyper calls when necessary
so that the length limits of scatter/gather lists are respected.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch updates the nx-aes-gcm implementation to perform several
hyper calls if needed in order to always respect the length limits for
scatter/gather lists.
Two different limits are considered:
- "ibm,max-sg-len": maximum number of bytes of each scatter/gather
list.
- "ibm,max-sync-cop":
- The total number of bytes that a scatter/gather list can hold.
- The maximum number of elements that a scatter/gather list can have.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch updates the nx-aes-ctr implementation to perform several
hyper calls if needed in order to always respect the length limits for
scatter/gather lists.
Two different limits are considered:
- "ibm,max-sg-len": maximum number of bytes of each scatter/gather
list.
- "ibm,max-sync-cop":
- The total number of bytes that a scatter/gather list can hold.
- The maximum number of elements that a scatter/gather list can have.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch updates the nx-aes-cbc implementation to perform several
hyper calls if needed in order to always respect the length limits for
scatter/gather lists.
Two different limits are considered:
- "ibm,max-sg-len": maximum number of bytes of each scatter/gather
list.
- "ibm,max-sync-cop":
- The total number of bytes that a scatter/gather list can hold.
- The maximum number of elements that a scatter/gather list can have.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch updates the nx-aes-ecb implementation to perform several
hyper calls if needed in order to always respect the length limits for
scatter/gather lists.
Two different limits are considered:
- "ibm,max-sg-len": maximum number of bytes of each scatter/gather
list.
- "ibm,max-sync-cop":
- The total number of bytes that a scatter/gather list can hold.
- The maximum number of elements that a scatter/gather list can have.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch includes one more parameter to nx_build_sg_lists() to skip
the given number of bytes from beginning of each sg list.
This is needed in order to implement the fixes for the AES modes to make
them able to process larger chunks of data.
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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- 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: Ruchika Gupta <ruchika.gupta@freescale.com>
Change-Id: I6122f83a349aaca9522654df0026423cbb8d2cf2
Reviewed-on: http://git.am.freescale.net:8181/4123
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Rivera Jose-B46482 <German.Rivera@freescale.com>
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CRYPTO_DEV_FSL_CAAM_JR should be set by default to y if the config option
CRYPTO_DEV_FSL_CAAM is selected
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Change-Id: I9fe0cda416363c0aa205be0ac0b923337fd871db
Reviewed-on: http://git.am.freescale.net:8181/4228
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Reviewed-by: Rivera Jose-B46482 <German.Rivera@freescale.com>
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JOBR_DEPTH was wrongly being used for defining maximum pending jobs
per CPU in QI. Introduced a new macro to define the maximum
pending jobs per CPU.
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Change-Id: Iebc47fe19cf8eb7a2c39d8b6b802df33fb1073b6
Reviewed-on: http://git.am.freescale.net:8181/4242
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Rivera Jose-B46482 <German.Rivera@freescale.com>
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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: Ruchika Gupta <ruchika.gupta@freescale.com>
Change-Id: I918fb65f121ce3e1008a412377123de3ecd20d8d
Reviewed-on: http://git.am.freescale.net:8181/3972
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Reviewed-by: Rivera Jose-B46482 <German.Rivera@freescale.com>
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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: Ruchika Gupta <ruchika.gupta@freescale.com>
Change-Id: I2f0ec2ad0184155d3187c44fd059014f5bfca887
Reviewed-on: http://git.am.freescale.net:8181/3971
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Rivera Jose-B46482 <Jose.G.Rivera@freescale.com>
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Each cycle of SHA512 operates on 32 data words where as
SHA256 operates on 16 data words. This needs to be updated
while configuring DMA channels. Doing the same.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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For writing input buffer into DATA_IN register current driver
has the following state machine:
-> if input buffer < 9 : use fallback driver
-> else if input buffer < block size : Copy input buffer into data_in regs
-> else use dma transfer.
In cases where requesting for DMA channels fails for some reason,
or channel numbers are not provided in DT or platform data, probe
also fails. Instead of returning from driver use cpu polling mode.
In this mode processor polls on INPUT_READY bit and writes data into
data_in regs when it equals 1. This operation is repeated until the
length of message.
Now the state machine looks like:
-> if input buffer < 9 : use fallback driver
-> else if input buffer < block size : Copy input buffer into data_in regs
-> else if dma enabled: use dma transfer
else use cpu polling mode.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The bug here is that:
while (eng_busy & (!icq_empty) & dma_busy)
is never true because it's using bitwise instead of logical ANDs. The
other bitwise AND conditions work as intended but I changed them as well
for consistency.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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There is a typo here. "dev->hw_link[]" is an array, not a pointer, so
the check is nonsense. We should be checking recently allocated
"dev->hw_link[0]" instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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For AM437x SoC, ARCH_OMAP2 and ARCH_OMAP3 is not enabled in the defconfig. We
follow same thing as SHA driver, and add depends on ARCH_OMAP2PLUS so that the
config is selectable for AES driver on AM437x SoC builds.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Keeps request_irq exit/error code paths simpler.
Suggested-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use devm_kzalloc instead of kzalloc. With this change, there is no need to
call kfree in error/exit paths.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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For cases where offset/length of on any page of the input SG is not aligned by
AES_BLOCK_SIZE, we copy all the pages from the input SG list into a contiguous
buffer and prepare a single element SG list for this buffer with length as the
total bytes to crypt.
This is requried for cases such as when an SG list of 16 bytes total size
contains 16 pages each containing 1 byte. DMA using the direct buffers of such
instances is not possible.
For this purpose, we first detect if the unaligned case and accordingly
allocate enough number of pages to satisfy the request and prepare SG lists.
We then copy data into the buffer, and copy data out of it on completion.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In cases where requesting for DMA channels fails for some reason, or channel
numbers are not provided in DT or platform data, we switch to PIO-only mode
also checking if platform provides IRQ numbers and interrupt register offsets
in DT and platform data. All dma-only paths are avoided in this mode.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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We initialize the scatter gather walk lists needed for PIO mode and avoid all
DMA paths such as mapping/unmapping buffers by checking for the pio_only flag.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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We add an IRQ handler that implements a state-machine for PIO-mode and data
structures for walking the scatter-gather list. The IRQ handler is called in
succession both when data is available to read or next data can be sent for
processing. This process continues till the entire in/out SG lists have been
walked. Once the SG-list has been completely walked, the IRQ handler schedules
the done_task tasklet.
Also add a useful macro that is used through out the IRQ code for a common
pattern of calculating how much an SG list has been walked. This improves code
readability and avoids checkpatch errors.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add IRQ information to pdata and helper macros. These are required
for PIO-mode support.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Intermdiate buffers were allocated, mapped and used for DMA. These are no
longer required as we use the SGs from crypto layer directly in previous
commits in the series. Also along with it, remove the logic for copying SGs
etc as they are no longer used, and all the associated variables in omap_aes_device.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Earlier functions that did a similar sync are replaced by the dma_sync_sg_*
which can operate on entire SG list.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In early version of this driver, assumptions were made such as DMA layer
requires contiguous buffers etc. Due to this, new buffers were allocated,
mapped and used for DMA. These assumptions are no longer true and DMAEngine
scatter-gather DMA doesn't have such requirements. We simply the DMA operations
by directly using the scatter-gather buffers provided by the crypto layer
instead of creating our own.
Lot of logic that handled DMA'ing only X number of bytes of the total, or as
much as fitted into a 3rd party buffer is removed and is no longer required.
Also, good performance improvement of atleast ~20% seen with encrypting a
buffer size of 8K (1800 ops/sec vs 1400 ops/sec). Improvement will be higher
for much larger blocks though such benchmarking is left as an exercise for the
reader. Also DMA usage is much more simplified and coherent with rest of the
code.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Crypto layer only passes nbytes but number of SG elements is needed for mapping
or unmapping SGs at one time using dma_map* API and also needed to pass in for
dmaengine prep function.
We call function added to scatterwalk for this purpose in omap_aes_handle_queue
to populate the values which are used later.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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When DEBUG is enabled, these macros can be used to print variables in integer
and hex format, and clearly display which registers, offsets and values are
being read/written , including printing the names of the offsets and their values.
Using statement expression macros in read path as,
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch fixes a bug in the nx-aes-gcm implementation.
Corrected the code so that the authtag is always verified after
decrypting and not just when there is associated data included.
Also, corrected the code to retrieve the input authtag from src
instead of dst.
Reviewed-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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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: Alex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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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: Alex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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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.
Change-Id: I7e6f4b8ea038e97d276cb05356d8dc290b83092b
Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/3648
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Geanta Neag Horia Ioan-B05471 <horia.geanta@freescale.com>
Reviewed-by: Rivera Jose-B46482 <Jose.G.Rivera@freescale.com>
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Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Change-Id: I4b07a3c5411e40341be3821edeb022102c4fc4e9
Reviewed-on: http://git.am.freescale.net:8181/3970
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Reviewed-by: Rivera Jose-B46482 <Jose.G.Rivera@freescale.com>
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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.
Change-Id: I44894dd3dd26687be7faa5a4ef356559693e5b3c
Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/3647
Reviewed-by: Geanta Neag Horia Ioan-B05471 <horia.geanta@freescale.com>
Reviewed-by: Rivera Jose-B46482 <Jose.G.Rivera@freescale.com>
Tested-by: Rivera Jose-B46482 <Jose.G.Rivera@freescale.com>
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The NX driver uses the transformation context to store several fields
containing data related to the state of the operations in progress.
Since a single tfm can be used by different kernel threads at the same
time, we need to protect the data stored into the context.
This patch makes use of spin locks to protect the data where a race
condition can happen.
Reviewed-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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These local symbols are used only in this file.
Fix the following sparse warnings:
drivers/crypto/amcc/crypto4xx_alg.c:35:6: warning: symbol 'set_dynamic_sa_command_0' was not declared. Should it be static?
drivers/crypto/amcc/crypto4xx_alg.c:55:6: warning: symbol 'set_dynamic_sa_command_1' was not declared. Should it be static?
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This local symbol is used only in this file.
Fix the following sparse warnings:
drivers/crypto/sahara.c:420:6: warning: symbol 'sahara_watchdog' was not declared. Should it be static?
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch fixes a bug that is triggered when cts(cbc(aes)) is used with
nx-crypto driver on input larger than 32 bytes.
The chaining value from co-processor was not being saved. This value is
needed because it is used as the IV by cts(cbc(aes)).
Signed-off-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The co-processor has several limits regarding the length of
scatter/gather lists and the total number of bytes in it. These limits
are available in the device tree, as following:
- "ibm,max-sg-len": maximum number of bytes of each scatter/gather
list.
- "ibm,max-sync-cop": used for synchronous operations, it is an array
of structures that contains information regarding the limits that
must be considered for each mode and operation. The most important
limits in it are:
- The total number of bytes that a scatter/gather list can hold.
- The maximum number of elements that a scatter/gather list can
have.
This patch updates the NX driver to perform several hyper calls if
needed in order to always respect the length limits for scatter/gather
lists.
Reviewed-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com>
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The co-processor receives data to be hashed through scatter/gather lists
pointing to physical addresses. When a vmalloc'ed data is given, the
driver must calculate the physical address to each page of the data.
However the current version of it just calculates the physical address
once and keeps incrementing it even when a page boundary is crossed.
This patch fixes this behaviour.
Reviewed-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com>
Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use devm_kzalloc() to make cleanup paths simpler.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Using devm_request_irq() rather than request_irq().
So removing free_irq() calls from the probe error
path and the remove handler.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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