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Some later SEC v3.x are equipped with a second IRQ line.
By correctly assigning IRQ affinity, this feature can be
used to increase performance on dual core parts, like the
MPC8572E and P2020E.
The existence of the 2nd IRQ is determined from the device
node's interrupt property. If present, the driver remaps
two of four channels, which in turn makes those channels
trigger their interrupts on the 2nd line instead of the first.
To handle single- and dual-IRQ combinations efficiently,
talitos gets two new interrupt handlers and back-half workers.
[includes a fix to MCR_LO's address.]
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add a reg member to the channel struct and use it to
access channels.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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SEC h/w versions 2.1 and above support sha224 via explicit instruction.
Performing sha224 ahashes on earlier versions is still possible because
they support sha256 (sha224 is sha256 with different initial constants
and a different truncation length). We do this by overriding hardware
context self-initialization, and perform it manually in s/w instead.
Thanks to Lee for his fixes for correct execution on actual sec2.0 h/w.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off by: Lee Nipper <lee.nipper@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add the following alorithms to talitos:
md5,
sha1,
sha256,
sha384,
sha512.
These are all type ahash.
Signed-off-by: Lee Nipper <lee.nipper@gmail.com>
Acked-By: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Enabling extended addressing in the h/w requires we always assign the
extended address component (eptr) of the talitos h/w pointer. This is
for e500 based platforms with large memories.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Base versions handle constant folding just fine.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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SEC version 2.1 and above adds the capability to do the IPSec ICV
memcmp in h/w. Results of the cmp are written back in the descriptor
header, along with the done status. A new callback is added that
checks these ICCR bits instead of performing the memcmp on the core,
and is enabled by h/w capability.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
After testing on different parts, another condition was added
before using h/w auth check because different
SEC revisions require different handling.
The SEC 3.0 allows a more flexible link table where
the auth data can span separate link table entries.
The SEC 2.4/2.1 does not support this case.
So a test was added in the decrypt routine
for a fragmented case; the h/w auth check is disallowed for
revisions not having the extent in the link table;
in this case the hw auth check is done by software.
A portion of a previous change for SEC 3.0 link table handling
was removed since it became dead code with the hw auth check supported.
This seems to be the best compromise for using hw auth check
on supporting SEC revisions; it keeps the link table logic
simpler for the fragmented cases.
Signed-off-by: Lee Nipper <lee.nipper@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In talitos_interrupt, upon one done interrupt, mask further done interrupts,
and ack only any error interrupt.
In talitos_done, unmask done interrupts after completing processing.
In flush_channel, ack each done channel processed.
Keep done overflow interrupts masked because even though each pkt
is ack'ed, a few done overflows still occur.
Signed-off-by: Lee Nipper <lee.nipper@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch adds support for authenc(hmac(sha1),cbc(des3_ede))
to the talitos crypto driver for the Freescale Security Engine.
Some adjustments were made to the scatterlist to link table conversion
to make 3des work for ping -s 1439..1446.
Signed-off-by: Lee Nipper <lee.nipper@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add support for the SEC available on a wide range of PowerQUICC devices,
e.g. MPC8349E, MPC8548E.
This initial version supports authenc(hmac(sha1),cbc(aes)) for use with IPsec.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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