[PATCH v8 00/14] crypto: qce - Fix crypto self-test failures

[Bartosz Golaszewski]

This iteration - in addition to the previous fixes - proposes to split
the QCE driver into a core part necessary to bind to the QCE DT node and
enable runtime power management in order to allow to drop the
interconnect votes, and the crypto part registering the crypto
algorithms. The core module is then enabled in arm64 defconfig while the
crypto part stays disabled by default. In addition: the actual
registration of crypto algos is gated with a module parameter that
default to false.

Note that remaining reported bugs will still be fixed in follow-up
series. This series addresses self-tests and disables the algos by
default.

The QCE hardware crypto engine has several limitations that cause it to
produce incorrect results or stall on certain inputs. This series fixes
several bugs and adds workaround allowing the deiver to pass crypto
self-tests.

The failures addressed are:

- HMAC self-test failures for empty messages
- AES-XTS returning success on zero-length input (should be -EINVAL)
- AES-CTR: partial final block causes the engine to stall, output IV
  derivation was incorrect
- AES-XTS with key1 == key2 is not supported by the CE
- AES-CCM: partial final block and fragmented payload both stall the
  engine

All fixes were tested on an SM8650 QRD board with
CONFIG_CRYPTO_SELFTESTS=y and CONFIG_CRYPTO_SELFTESTS_FULL=y.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
---
Changes in v8:
- Add a patch making the crypto driver *not* register algos by default
  but only if the user explicitly requests it with the provided module
  parameter
- Use the "offloader" name for the crypto IP instead of "accelerator"
- Fix device module table issues
- Make the core driver use a list (despite it only having a single
  member now) of child auxiliary devices to register to make it clear we
  have the intention of extending this once we start the work on secure
  media playback
- Link to v7: https://patch.msgid.link/20260910-qce-fix-self-tests-v7-0-cdbd2718af14@xxxxxxxxxxxxxxxx

Changes in v7:
- Add follow-up changes converting the QCE crypto driver to auxiliary
  bus, adding the core QCE driver under drivers/soc/ registering the
  auxiliary device and removing the BROKEN Kconfig label
- Link to v6: https://patch.msgid.link/20260717-qce-fix-self-tests-v6-0-455775fe5f6c@xxxxxxxxxxxxxxxx

Changes in v6:
- Handle all zero-length HMAC finalizations (like imported state with
  data already hashed), not only the genuinely empty message case
- Add an additional patch addressing the fragmented skcipher payload
  issue
- Link to v5: https://patch.msgid.link/20260706-qce-fix-self-tests-v5-0-86f461ff1829@xxxxxxxxxxxxxxxx

Changes in v5:
- Dropped patch 1/8 that's already queued
- Use the pre-allocated fallback ahash for HMAC transforms (Herbert)
- Link to v4: https://patch.msgid.link/20260622-qce-fix-self-tests-v4-0-4f82ffa716c6@xxxxxxxxxxxxxxxx

Changes in v4:
- Remove remaining ECB and DES3 bits
- Pick up tags
- Link to v3: https://patch.msgid.link/20260617-qce-fix-self-tests-v3-0-ecc2b4dedcfd@xxxxxxxxxxxxxxxx

Changes in v3:
- Remove even more algorithms and dead code in patch 1/8
- Link to v2: https://patch.msgid.link/20260615-qce-fix-self-tests-v2-0-dc911f1aad42@xxxxxxxxxxxxxxxx

Changes in v2:
- Add fixes for the full suite of crypto self-tests
- Add Fixes and Cc tags
- Link to v1: https://patch.msgid.link/20260610-qce_selftest_fix-v1-0-1b0504783a46@xxxxxxxxxxxxxxxx/

---
Bartosz Golaszewski (12):
      crypto: qce - Fix HMAC self-test failures for empty messages
      crypto: qce - Reject empty messages for AES-XTS
      crypto: qce - Use a fallback for AES-CTR with a partial final block
      crypto: qce - Use fallback for fragmented skcipher payloads
      crypto: qce - Use a fallback for CCM with a partial final block
      crypto: qce - Use fallback for CCM with a fragmented payload
      crypto: qce - Only register algos if the user really wants it
      Revert "crypto: qce - Mark QCE as BROKEN"
      crypto: qce - convert to auxiliary bus
      soc: qcom: add core driver for the Qualcomm Crypto Engine
      arm64: defconfig: enable the Qualcomm Crypto Engine core driver
      arm: multi_v7_defconfig: enable the Qualcomm Crypto Engine core driver

Kuldeep Singh (2):
      crypto: qce - Fix CTR-AES for partial block requests
      crypto: qce - Fix xts-aes-qce for weak keys

 arch/arm/configs/multi_v7_defconfig |   1 +
 arch/arm64/configs/defconfig        |   1 +
 drivers/crypto/Kconfig              |  18 ++++---
 drivers/crypto/qce/aead.c           |  44 ++++++++++++---
 drivers/crypto/qce/cipher.h         |   1 +
 drivers/crypto/qce/common.h         |   1 -
 drivers/crypto/qce/core.c           | 105 ++++++++++++++++++------------------
 drivers/crypto/qce/core.h           |   5 +-
 drivers/crypto/qce/sha.c            |  70 ++++++++++++++++--------
 drivers/crypto/qce/skcipher.c       |  62 +++++++++++++++------
 drivers/soc/qcom/Kconfig            |  11 ++++
 drivers/soc/qcom/Makefile           |   1 +
 drivers/soc/qcom/qce-core.c         |  92 +++++++++++++++++++++++++++++++
 13 files changed, 305 insertions(+), 107 deletions(-)
---
base-commit: 3fe766c979aa6145d9a72533ab32b9da30070767
change-id: 20260610-qce-fix-self-tests-492ffd2ef955

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>