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Pick commit f366af462aef1dcaeab0f68b031e5c4c4eb860e1 from Linux
upstream.
crypto: caam - clean-up in caam_init_rng()
Clean up the code, as indicated by Coccinelle.
Cc: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Pick commit 4ca7c7d8fea1ffdc36df33578c1e68d0d6367b0c from Linux
upstream.
crypto: caam - trivial code clean-up
-replace offsetof with container_of
-remove unused "assoc_nents", "iv_dma" from aead_edesc
and fix comments
-remove unused CAAM_MAX_IV_LENGTH #define
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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dma_alloc return non-coherent memory, but the driver does no cache
maintenance on the buffer, causing memory corruption. Fix this by
requesting coherent memory for the DMA transfer.
Fixes: ef4144b4ab63 (crypto: caam - fix RNG buffer cache alignment)
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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this is alternate version of linux fix:
---------------------------------------------------------------------
| commit 412c98c1bef65fe7589f1300e93735d96130307c
| Author: Steve Cornelius <steve.cornelius@freescale.com>
| Date: Mon Jun 15 16:52:59 2015 -0700
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| crypto: caam - fix RNG buffer cache alignment
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| The hwrng output buffers (2) are cast inside of a a struct (caam_rng_ctx)
| allocated in one DMA-tagged region. While the kernel's heap allocator
| should place the overall struct on a cacheline aligned boundary, the 2
| buffers contained within may not necessarily align. Consenquently, the
| ends of unaligned buffers may not fully flush, and if so, stale data will be
| left behind, resulting in small repeating patterns.
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| This fix aligns the buffers inside the struct.
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| Note that not all of the data inside caam_rng_ctx necessarily needs to
| be DMA-tagged, only the buffers themselves require this. However, a fix
| would incur the expense of error-handling bloat in the case of allocation
| failure.
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| Cc: stable@vger.kernel.org
| Signed-off-by: Steve Cornelius <steve.cornelius@freescale.com>
| Signed-off-by: Victoria Milhoan <vicki.milhoan@freescale.com>
| Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---------------------------------------------------------------------
instead we will use just dma_alloc()
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add the i.MX6 crypto core CAAM with support for the random number
generator.
The core itself works with jobrings in which descriptors can be
queued/dequeued for processing. Depending on descriptor type
the CAAM unit then either produces random numbers or decrypts/encrypts
data.
The code is based on the Linux v4.1 driver of the same name
without all the crypto/hashing components.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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