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path: root/drivers/crypto/talitos.c
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2009-08-13crypto: talitos - add support for 36 bit addressingKim Phillips1-29/+40
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>
2009-08-13crypto: talitos - align locks on cache linesKim Phillips1-83/+58
align channel access locks onto separate cache lines (for performance reasons). This is done by placing per-channel variables into their own private struct, and using the cacheline_aligned attribute within that struct. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-08-13crypto: talitos - simplify hmac data size calculationKim Phillips1-5/+3
don't do request->src vs. assoc pointer math - it's the same as adding assoclen and ivsize (just with more effort). Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: talitos - Avoid unnecessary decrypt checkKim Phillips1-2/+1
the ICV check bit only gets set in decrypt entry points Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: talitos - containerof related codingstyleKim Phillips1-10/+16
no functional changes. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: talitos - Whitespace/codingstyle/overrun lines cleanupKim Phillips1-47/+48
no functional changes. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: talitos - Add ablkcipher algorithmsLee Nipper1-38/+342
Add these ablkcipher algorithms: cbc(aes), cbc(des3_ede). Added handling of chained scatterlists with zero length entry because eseqiv uses it. Added new map and unmap routines. Signed-off-by: Lee Nipper <lee.nipper@gmail.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: talitos - scaffolding for new algorithm typesLee Nipper1-116/+129
This patch is preparation for adding new algorithm types. Some elements which are AEAD specific were renamed. The algorithm template structure was changed to use crypto_alg, and talitos_alg_alloc was made more general with respect to algorithm types. ipsec_esp_edesc is renamed to talitos_edesc to use it in the upcoming ablkcipher routines. Signed-off-by: Lee Nipper <lee.nipper@gmail.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-25crypto: talitos - Ack done interrupt in isr instead of taskletLee Nipper1-13/+7
Previous commit for interrupt mitigation moved the done interrupt acknowlegement from the isr to the talitos_done tasklet. This patch moves the done interrupt acknowledgement back into the isr so that done interrupts will always be acknowledged. This covers the case for acknowledging interrupts for channel done processing that has actually already been completed by the tasklet prior to fielding a pending interrupt. 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>
2008-12-25crypto: talitos - Preempt overflow interrupts off-by-one fixVishnu Suresh1-1/+1
In commit ec6644d6325b5a38525f1d5b20fd4bf7db05cf2a "crypto: talitos - Preempt overflow interrupts", the test in atomic_inc_not_zero was interpreted by the author to be applied after the increment operation (not before). This off-by-one fix prevents overflow error interrupts from occurring when requests are frequent and large enough to do so. Signed-off-by: Vishnu Suresh <Vishnu@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-25crypto: talitos - Perform auth check in h/w if on sec 2.1 and aboveKim Phillips1-44/+83
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>
2008-12-25crypto: talitos - Implement done interrupt mitigationLee Nipper1-8/+22
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>
2008-12-25crypto: talitos - Pass correct interrupt status to error handlerKim Phillips1-9/+3
Since we ack early, the re-read interrupt status in talitos_error may be already updated with a new value. Pass the error ISR value directly in order to report and handle the error based on the correct error status. Also remove unused error tasklet. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-11-30fix talitosAl Viro1-2/+2
talitos_remove() can be called from talitos_probe() on failure exit path, so it can't be __devexit. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-15crypto: talitos - Avoid consecutive packets going out with same IVKim Phillips1-2/+4
The SEC's h/w IV out implementation DMAs the trailing encrypted payload block of the last encryption to ctx->iv. Since the last encryption may still be pending completion, we can sufficiently prevent successive packets from being transmitted with the same IV by xoring with sequence number. Also initialize alg_list earlier to prevent oopsing on a failed probe. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-13crypto: talitos - Add handling for SEC 3.x treatment of link tableLee Nipper1-15/+39
Later SEC revision requires the link table (used for scatter/gather) to have an extra entry to account for the total length in descriptor [4], which contains cipher Input and ICV. This only applies to decrypt, not encrypt. Without this change, on 837x, a gather return/length error results when a decryption uses a link table to gather the fragments. This is observed by doing a ping with size of 1447 or larger with AES, or a ping with size 1455 or larger with 3des. So, add check for SEC compatible "fsl,3.0" for using extra link table entry. 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>
2008-07-17crypto: talitos - sparse fixKim Phillips1-1/+1
Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-17crypto: talitos - Stop leaking memory in error pathKim Phillips1-2/+7
free edescriptor when returning error (such as -EAGAIN). Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Acked-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-17crypto: talitos - Fix GFP flag usageKim Phillips1-2/+4
use GFP_ATOMIC when necessary; use atomic_t when allocating submit_count. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Acked-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-17crypto: talitos - Preempt overflow interruptsKim Phillips1-5/+22
add requests pending/submit count to prevent request queue full condition by preempting h/w overflow interrupts in software. We do this due to the delay in the delivery and handling of the channel overflow error interrupt. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Acked-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-17crypto: talitos - Correct dst != src case handlingLee Nipper1-1/+1
Seems that dst == src, but this fixes the logic in case it's not. 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>
2008-07-17crypto: talitos - Remove calls to of_node_putLee Nipper1-5/+0
Remove of_node_put calls since there is no corresponding of_node_get. This patch prevents an exception when talitos is loaded a 2nd time. This sequence: modprobe talitos; rmmod talitos; modprobe talitos causes this message: "WARNING: Bad of_node_put() on /soc8349@e0000000/crypto@30000". 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>
2008-07-10crypto: talitos - Add support for sha256 and md5 variantsLee Nipper1-12/+99
This patch adds support for: authenc(hmac(sha256),cbc(aes)), authenc(hmac(sha256),cbc(des3_ede)), authenc(hmac(md5),cbc(aes)), authenc(hmac(md5),cbc(des3_ede)). Some constant usage was changed to use aes, des, and sha include files. Signed-off-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: talitos - Use proper form for algorithm driver namesHerbert Xu1-2/+2
The name authenc(hmac(sha1-talitos),cbc(aes-talitos)) is potentially ambiguous since it could also mean using the generic authenc template on hmac(sha1-talitos) and cbc(aes-talitos). In general, parentheses should be reserved for templates that spawn algorithms. This patches changes it to the form authenc-hmac-sha1-cbc-aes-talitos. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: talitos - Add support for 3desLee Nipper1-25/+68
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>
2008-07-10crypto: talitos - Freescale integrated security engine (SEC) driverKim Phillips1-0/+1467
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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