scsi: ufs: Add program_key() variant op

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On Snapdragon SoCs, the Linux kernel isn't permitted to directly access the
standard UFS crypto configuration registers.  Instead, programming and
evicting keys must be done through vendor-specific SMC calls.

To support this hardware, add a ->program_key() method to 'struct
ufs_hba_variant_ops'.  This allows overriding the UFS standard key
programming / eviction procedure.

Link: https://lore.kernel.org/r/20200710072013.177481-5-ebiggers@kernel.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Eric Biggers 2020-07-10 00:20:11 -07:00 • committed by Martin K. Petersen

parent 083dd788e4

commit 1bc726e26e

2 changed files with 20 additions and 10 deletions

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27

drivers/scsi/ufs/ufshcd-crypto.c

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3

drivers/scsi/ufs/ufshcd.h

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