[PATCH v12 0/4] crypto: spacc - Add SPAcc Crypto Driver

[Pavitrakumar Managutte <pavitrakumarm@vayavyalabs.com>]

Add the driver for SPAcc(Security Protocol Accelerator), which is a
crypto acceleration IP from Synopsys. The SPAcc supports multiple ciphers,
hashes and AEAD algorithms with various modes. The driver currently supports
below

hash:
- cmac(aes)
- xcbc(aes)
- cmac(sm4)
- xcbc(sm4)
- hmac(md5)
- md5
- hmac(sha1)
- sha1
- sha224
- sha256
- sha384
- sha512
- hmac(sha224)
- hmac(sha256)
- hmac(sha384)
- hmac(sha512)
- sha3-224
- sha3-256
- sha3-384
- sha3-512
- hmac(sm3)
- sm3
- michael_mic

changelog:
  v1->v2 changes:
    - Added local_bh_disable() and local_bh_enable() for the below calls.
      a. for ciphers skcipher_request_complete()
      b. for aead aead_request_complete()
      c. for hash ahash_request_complete()
    - dt-bindings updates
      a. removed snps,vspacc-priority and made it into config option
      b. renamed snps,spacc-wdtimer to snps,spacc-internal-counter
      c. Added description to all properties
    - Updated corresponding dt-binding changes to code

  v2->v3 changes:
    - cra_init and cra_exit replaced with init_tfm and exit_tfm for hashes.
    - removed mutex_lock/unlock for spacc_skcipher_fallback call
    - dt-bindings updates
     a. updated SOC related information
     b. renamed compatible string as per SOC
   - Updated corresponding dt-binding changes to code

  v3->v4 changes:
   - removed snps,vspacc-id from the dt-bindings
   - removed mutex_lock from ciphers
   - replaced magic numbers with macros
   - removed sw_fb variable from struct mode_tab and associated code from the
     hashes
   - polling code is replaced by wait_event_interruptible

  v4->v5 changes:
   - Updated to register with the crypto-engine
   - Used semaphore to manage SPAcc device hardware context pool
   - This patchset supports Hashes only
   - Dropping the support for Ciphers and AEADs in this patchset
   - Added Reviewed-by tag on the Device tree patch since it was reviewed on
     v4 patch by Krzysztof Kozlowski and Rob Herring (Arm)

  v5->v6 changes:
   - Removed CRYPTO_DEV_SPACC_CIPHER and CRYPTO_DEV_SPACC_AEAD Kconfig options,
     since the cipher and aead support is not part of this patchset
   - Dropped spacc_skcipher.o and spacc_aead.o from Makefile to fix build errors
     reported by kernel test robot
   - Added Reported-by and Closes tags as suggested

  v6->v7 changes:
   - Fixed build error reported by Kernel test robot
   - Added Reported-by and Closes tags as suggested

  v7->v8 changes:
   - Fixed misleading comment: Clarified that only HMAC key pre-processing
     is done in software, while the actual HMAC operation is performed by
     hardware
   - Simplified do_shash() function signature by removing unused parameters
   - Updated all do_shash() call sites to use new simplified signature
   - Fixed commit message formatting by adding "crypto: spacc - <subject>" to
     all patches
   - used __free() for scope based resource management

  v8->v9 changes:
   - Updated the software fallback implementation to use HASH_FBREQ_ON_STACK
   - Corrected dynamic allocation of statesize and reqsize in init_tfm
   - Fixed synchronization issues in the digest request

  v9->v10 changes:
   - Fixed unused variable warning

  v10->v11 changes:
   - Removed the redundant crypto_alloc_ahash in the init_tfm function
   - Removed the redundant crypto_free_ahash in exit_tfm function
   - Removed the redundant crypto_ahash_setkey call in setkey function

  v11->v12 changes:
   - Removed do_shash() and switched to lib/crypto API in spacc_hash_setkey
   - Dropped support for SM3 algorithm
   - Improved multi-device safety by encapsulating handling within priv
   - Added memzero_explicit() in sensitive paths
   - Minor code cleanups and style fixes
   - Algorithm registration cleanups

Pavitrakumar Managutte (4):
  dt-bindings: crypto: Document support for SPAcc
  crypto: spacc - Add SPAcc ahash support
  crypto: spacc - Add SPAcc AUTODETECT Support
  crypto: spacc - Add SPAcc Kconfig and Makefile

 .../bindings/crypto/snps,dwc-spacc.yaml       |   50 +
 drivers/crypto/Kconfig                        |    1 +
 drivers/crypto/Makefile                       |    1 +
 drivers/crypto/dwc-spacc/Kconfig              |   88 +
 drivers/crypto/dwc-spacc/Makefile             |    8 +
 drivers/crypto/dwc-spacc/spacc_ahash.c        |  821 ++++++
 drivers/crypto/dwc-spacc/spacc_core.c         | 2413 +++++++++++++++++
 drivers/crypto/dwc-spacc/spacc_core.h         |  838 ++++++
 drivers/crypto/dwc-spacc/spacc_device.c       |  275 ++
 drivers/crypto/dwc-spacc/spacc_device.h       |  236 ++
 drivers/crypto/dwc-spacc/spacc_hal.c          |  374 +++
 drivers/crypto/dwc-spacc/spacc_hal.h          |  114 +
 drivers/crypto/dwc-spacc/spacc_interrupt.c    |  328 +++
 drivers/crypto/dwc-spacc/spacc_manager.c      |  610 +++++
 14 files changed, 6157 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/crypto/snps,dwc-spacc.yaml
 create mode 100644 drivers/crypto/dwc-spacc/Kconfig
 create mode 100644 drivers/crypto/dwc-spacc/Makefile
 create mode 100644 drivers/crypto/dwc-spacc/spacc_ahash.c
 create mode 100644 drivers/crypto/dwc-spacc/spacc_core.c
 create mode 100644 drivers/crypto/dwc-spacc/spacc_core.h
 create mode 100644 drivers/crypto/dwc-spacc/spacc_device.c
 create mode 100644 drivers/crypto/dwc-spacc/spacc_device.h
 create mode 100644 drivers/crypto/dwc-spacc/spacc_hal.c
 create mode 100644 drivers/crypto/dwc-spacc/spacc_hal.h
 create mode 100644 drivers/crypto/dwc-spacc/spacc_interrupt.c
 create mode 100644 drivers/crypto/dwc-spacc/spacc_manager.c


base-commit: 8879a3c110cb8ca5a69c937643f226697aa551d9
--
2.25.1