crypto: tegra - Fix HASH intermediate result handling

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The intermediate hash values generated during an update task were
handled incorrectly in the driver. The values have a defined format for
each algorithm. Copying and pasting from the HASH_RESULT register
balantly would not work for all the supported algorithms. This incorrect
handling causes failures when there is a context switch between multiple
operations.

To handle the expected format correctly, add a separate buffer for
storing the intermediate results for each request. Remove the previous
copy/paste functions which read/wrote to the registers directly. Instead
configure the hardware to get the intermediate result copied to the
buffer and use host1x path to restore the intermediate hash results.

Fixes: 0880bb3b00 ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Akhil R 2025-02-24 14:46:06 +05:30 • committed by Herbert Xu

parent 97ee15ea10

commit ff4b7df0b5

2 changed files with 98 additions and 52 deletions

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drivers/crypto/tegra/tegra-se-hash.c

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drivers/crypto/tegra/tegra-se.h

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