crypto: Add EIP-93 crypto engine support

This small series add support for the Inside Secure EIP-93. This is a predecessor of the current supported EIP197. It doesn't require a firmware but instead it's embedded in the SoC.

First patch extend guard for spinlock_bh.

The other actually implement Documentation and Driver.

The Driver pass all the normal selft test for the supported algo and also pass the EXTRA test with fuzz_iterations set to 10000.

Changes v11:
- Drop any mtk variable reference and use eip93 instead
- Mute smatch warning for context unbalance by using scoped_guard instead of guard cleanup API
Changes v10:
- Use CRYPTO_ALG_ASYNC for eip93_hmac_setkey
Changes v9:
- Rework hash code to alloc DMA only when needed
- Rework hash code to only alloc needed blocks and use
local struct in req for everything else
- Rework hash code to use GFP_ATOMIC
- Simplify hash update function
- Generalize hmac key set function
Changes v8:
- Rework export and update to not sleep on exporting state (consume pending packet in update and return -EINPROGRESS)
Changes v7:
- Fix copypaste error in __eip93_hash_init
- Rework import/export to actually export the partial hash (we actually unmap DMA on export)
- Rename no_finalize variable to better partial_hash
- Rename 3rd commit title and drop Mediatek from title.
- Add Cover Letter
- Add Reviewed-by to DT commit
(cumulative changes from old series that had changelog in each patch) Changes v6:
- Add SoC specific compatible
- Add now supported entry for compatible with no user
Changes v5:
- Add Ack tag to guard patch
- Comment out compatible with no current user
- Fix smatch warning (reported by Dan Carpenter)
Changes v4:
- Out of RFC
- Add missing bitfield.h
- Drop useless header
Changes v3:
- Mute warning from Clang about C23
- Fix not inizialized err
- Drop unused variable
- Add SoC compatible with generic one
Changes v2:
- Rename all variables from mtk to eip93
- Move to inside-secure directory
- Check DMA map errors
- Use guard API for spinlock
- Minor improvements to code
- Add guard patch
- Change to better compatible
- Add description for EIP93 models

Christian Marangi (3):
spinlock: extend guard with spinlock_bh variants
dt-bindings: crypto: Add Inside Secure SafeXcel EIP-93 crypto engine
crypto: Add Inside Secure SafeXcel EIP-93 crypto engine support

 .../crypto/inside-secure,safexcel-eip93.yaml  |  67 ++
 MAINTAINERS                                   |   7 +
 drivers/crypto/Kconfig                        |   1 +
 drivers/crypto/Makefile                       |   1 +
 drivers/crypto/inside-secure/eip93/Kconfig    |  20 +
 drivers/crypto/inside-secure/eip93/Makefile   |   5 +
 .../crypto/inside-secure/eip93/eip93-aead.c   | 711 ++++++++++++++
 .../crypto/inside-secure/eip93/eip93-aead.h   |  38 +
 .../crypto/inside-secure/eip93/eip93-aes.h    |  16 +
 .../crypto/inside-secure/eip93/eip93-cipher.c | 413 +++++++++
 .../crypto/inside-secure/eip93/eip93-cipher.h |  60 ++
 .../crypto/inside-secure/eip93/eip93-common.c | 809 ++++++++++++++++
 .../crypto/inside-secure/eip93/eip93-common.h |  24 +
 .../crypto/inside-secure/eip93/eip93-des.h    |  16 +
 .../crypto/inside-secure/eip93/eip93-hash.c   | 866 ++++++++++++++++++
 .../crypto/inside-secure/eip93/eip93-hash.h   |  82 ++
 .../crypto/inside-secure/eip93/eip93-main.c   | 501 ++++++++++
 .../crypto/inside-secure/eip93/eip93-main.h   | 151 +++
 .../crypto/inside-secure/eip93/eip93-regs.h   | 335 +++++++
 include/linux/spinlock.h                      |  13 +
 20 files changed, 4136 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip93.yaml
 create mode 100644 drivers/crypto/inside-secure/eip93/Kconfig
 create mode 100644 drivers/crypto/inside-secure/eip93/Makefile
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-aead.c
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-aead.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-aes.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-cipher.c
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-cipher.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-common.c
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-common.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-des.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-hash.c
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-hash.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-main.c
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-main.h
 create mode 100644 drivers/crypto/inside-secure/eip93/eip93-regs.h

2.45.2