Change the nx-842 common driver to wait for loading of both platform
drivers, and fail loading if the platform driver pointer is not set.
Add an independent platform driver pointer, that the platform drivers
set if they find they are able to load (i.e. if they find their platform
devicetree node(s)).

The problem is currently, the main nx-842 driver will stay loaded even
if there is no platform driver and thus no possible way it can do any
compression or decompression.  This allows the crypto 842-nx driver
to load even if it won't actually work.  For crypto compression users
(e.g. zswap) that expect an available crypto compression driver to
actually work, this is bad.  This patch fixes that, so the 842-nx crypto
compression driver won't load if it doesn't have the driver and hardware
available to perform the compression.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Remove the length field from the ccp_sg_workarea since it is unused.
Signed-off-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The underlying device support will set the device dma_mask pointer
if DMA is set up properly for the device.  Remove the check for and
assignment of dma_mask when it is null. Instead, just error out if
the dma_set_mask_and_coherent function fails because dma_mask is null.
Signed-off-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The added API calls provide a synchronous function call
get_blocking_random_bytes where the caller is blocked until
the nonblocking_pool is initialized.

CC: Andreas Steffen <andreas.steffen@strongswan.org>
CC: Theodore Ts'o <tytso@mit.edu>
CC: Sandy Harris <sandyinchina@gmail.com>
Signed-off-by: NStephan Mueller <smueller@chronox.de>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

If more than one application invokes getrandom(2) before the pool
is ready, then all bar one will be stuck forever because we use
wake_up_interruptible which wakes up a single task.

This patch replaces it with wake_up_all.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The mv_cesa driver does not request the CESA registers memory region.
Since we're about to add a new CESA driver, we need to make sure only one
of these drivers probe the CESA device, and requesting the registers memory
region is a good way to achieve that.
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The crypto layer already checks maxauthsize when setauthsize is
called.  So there is no need to check it again within setauthsize.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch uses the helper crypto_aead_maxauthsize instead of
directly dereferencing aead_alg.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch replaces references to aead_alg with old_aead_alg.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

omap3 support is same as omap2, just with different IO address (specified in DT)
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Since MD5 IV are now available in crypto/md5.h, use them.
Signed-off-by: NLABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Remove the null checks for tfm, src, slen, dst, dlen; tfm will never
be null and the other fields are always expected to be set correctly.
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

One mistyped description and another mistyped target were corrected.
Signed-off-by: NPaulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Don't need proc_fs.h
Signed-off-by: NTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Cleanup unused structure members.
Signed-off-by: NTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Function pm_runtime_get_sync could fail and we need to check return
value to prevent kernel crash.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

-change req_ctx->nbuf from u64 to unsigned int to silence checker
warnings; this is safe since nbuf value is <= HASH_MAX_BLOCK_SIZE
-remove unused value read from TALITOS_CCPSR; there is no requirement
to read upper 32b before reading lower 32b of a 64b register;
SEC RM mentions: "reads can always be done by byte, word, or dword"
-remove unused return value of sg_to_link_tbl()
-change "len" parameter of map_single_talitos_ptr() and
to_talitos_ptr_len() to unsigned int; later, cpu_to_be16 will __force
downcast the value to unsigned short without any checker warning
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Check return value of scatterlist_sg_next(), i.e. don't rely solely
on number of bytes to be processed or number of scatterlist entries.
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This reverts commit 7291a932.

The conversion to be16_add_cpu() is incorrect in case cryptlen is
negative due to premature (i.e. before addition / subtraction)
implicit conversion of cryptlen (int -> u16) leading to sign loss.

Cc: <stable@vger.kernel.org> # 3.10+
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Cc: <stable@vger.kernel.org> # 3.2+
Fixes: 1d11911a ("crypto: talitos - fix warning: 'alg' may be used uninitialized in this function")
Signed-off-by: NHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The + operation has higher precedence than ?: so we need parentheses
here.  Otherwise we may end up allocating a max of only one "cryptlen"
instead of two.

Fixes: 6f65f6ac ('crypto: talitos - implement scatter/gather copy for SEC1')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

crt_aead is an internal implementation detail and must not be
used outside of the crypto API itself.  This patch replaces the
unnecessary uses of crt_aead with crypto_aead_ivsize.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

All AEAD implementations must include internal/aead.h in order
to access required helpers.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

All AEAD implementations must include internal/aead.h in order
to access required helpers.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

All AEAD implementations must include internal/aead.h in order
to access required helpers.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

All AEAD implementations must include internal/aead.h in order
to access required helpers.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

All AEAD implementations must include internal/aead.h in order
to access required helpers.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NBruce Allan <bruce.w.allan@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add crypto compression alg for 842 hardware compression and decompression,
using the alg name "842" and driver_name "842-nx".

This uses only the PowerPC coprocessor hardware for 842 compression.  It
also uses the hardware for decompression, but if the hardware fails it will
fall back to the 842 software decompression library, so that decompression
never fails (for valid 842 compressed buffers).  A header must be used in
most cases, due to the hardware's restrictions on the buffers being
specifically aligned and sized.

Due to the header this driver adds, compressed buffers it creates cannot be
directly passed to the 842 software library for decompression.  However,
compressed buffers created by the software 842 library can be passed to
this driver for hardware 842 decompression (with the exception of buffers
containing the "short data" template, as lib/842/842.h explains).
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Simplify the pSeries NX-842 driver: do not expect incoming buffers to be
exactly page-sized; do not break up input buffers to compress smaller
blocks; do not use any internal headers in the compressed data blocks;
remove the software decompression implementation; implement the pSeries
nx842_constraints.

This changes the pSeries NX-842 driver to perform constraints-based
compression so that it only needs to compress one entire input block at a
time.  This removes the need for it to split input data blocks into
multiple compressed data sections in the output buffer, and removes the
need for any extra header info in the compressed data; all that is moved
(in a later patch) into the main crypto 842 driver.  Additionally, the
842 software decompression implementation is no longer needed here, as
the crypto 842 driver will use the generic software 842 decompression
function as a fallback if any hardware 842 driver fails.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add driver for NX-842 hardware on the PowerNV platform.

This allows the use of the 842 compression hardware coprocessor on
the PowerNV platform.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add "constraints" for the NX-842 driver.  The constraints are used to
indicate what the current NX-842 platform driver is capable of.  The
constraints tell the NX-842 user what alignment, min and max length, and
length multiple each provided buffers should conform to.  These are
required because the 842 hardware requires buffers to meet specific
constraints that vary based on platform - for example, the pSeries
max length is much lower than the PowerNV max length.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add NX-842 frontend that allows using either the pSeries platform or
PowerNV platform driver (to be added by later patch) for the NX-842
hardware.  Update the MAINTAINERS file to include the new filenames.
Update Kconfig files to clarify titles and descriptions, and correct
dependencies.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Move the entire NX-842 driver for the pSeries platform from the file
nx-842.c to nx-842-pseries.c.  This is required by later patches that
add NX-842 support for the PowerNV platform.

This patch does not alter the content of the pSeries NX-842 driver at
all, it only changes the filename.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

- s/clk_didsable_unprepare/clk_disable_unprepare
- s/prov/priv
- s/error/ret (bcm63xx_rng_probe)

Fixes: 6229c160 ("hwrng: bcm63xx - make use of devm_hwrng_register")
Signed-off-by: NÁlvaro Fernández Rojas <noltari@gmail.com>
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Use ADF_DH895XCC_FW instead of duplicating the string "qat_895xcc.bin"
when referring to the DH895xCC firmware.
Signed-off-by: NBruce Allan <bruce.w.allan@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Bug happens when a data size less than SHA block size is passed.
Since first attempt will be saved in buffer, second round attempt
get into two step to calculate op.inlen and op.outlen. The issue
resides in this step. A  wrong value of op.inlen and outlen was being
calculated.

This patch fix this eliminate the nx_sha_build_sg_list, that is
useless in SHA's algorithm context. Instead we call nx_build_sg_list
directly and pass a previous calculated max_sg_len to it.
Signed-off-by: NLeonidas S. Barbosa <leosilva@linux.vnet.ibm.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>