It has been observed that in zero-loss benchmarks, when a
slow traffic rate is being tested, the IRQ timer coalescing
parameter was set too high, and the ethernet controller
would start dropping packets because the job ring back half
wouldn't be executed in time before the ethernet controller
would fill its buffers, thereby significantly reducing the
zero-loss performance figures.
Empirical testing has shown that the best zero-loss performance
is achieved when IRQ coalescing is set to minimum values and/or
turned off, since apparently the job ring driver already implements
an adequately-performing general-purpose IRQ mitigation strategy
in software.
Whilst we could go with minimal count (2-8) and timing settings
(192-256), we prefer just turning h/w coalescing altogether off
to minimize setkey latency (due to split key generation), and
for consistent cross-SoC performance (the SEC vs. core clock
ratio changes).
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The SEC v4.x' RNGB h/w block self-initialized. RNG4, available
on SEC versions 5 and beyond, is based on a different standard
that requires manual initialization.
Also update any new errors From the SEC v5.2 reference manual:
The SEC v5.2's RNG4 unit reuses some error IDs, thus the addition
of rng_err_id_list over the CHA-independent err_id_list.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Yuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Yuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Yuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Radu-Andrei BULIE <radu.bulie@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Yashpal Dutta <yashpal.dutta@freescale.com>
Signed-off-by: Herbert 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: Yashpal Dutta <yashpal.dutta@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
sha224 and 384 support extends caam noise to 21 lines. Do the same
as commit 5b859b6 "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: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Signed-off-by: Herbert 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: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert 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: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
