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scsi: ufs: core: Add UFSHCD_QUIRK_BROKEN_CRYPTO_ENABLE

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Add UFSHCD_QUIRK_BROKEN_CRYPTO_ENABLE which tells the UFS core to not use
the crypto enable bit defined by the UFS specification.  This is needed to
support inline encryption on the "Exynos" UFS controller.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20240708235330.103590-4-ebiggers@kernel.org
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Eric Biggers 2024-07-08 16:53:27 -07:00 committed by Martin K. Petersen
parent ec99818afb
commit e95881e008
2 changed files with 15 additions and 0 deletions
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8
drivers/ufs/core/ufshcd-crypto.c
View File

@ -110,6 +110,10 @@ static int ufshcd_crypto_keyslot_evict(struct blk_crypto_profile *profile,
return ufshcd_program_key(hba, &cfg, slot);
}
/*
* Reprogram the keyslots if needed, and return true if CRYPTO_GENERAL_ENABLE
* should be used in the host controller initialization sequence.
*/
bool ufshcd_crypto_enable(struct ufs_hba *hba)
{
if (!(hba->caps & UFSHCD_CAP_CRYPTO))
@ -117,6 +121,10 @@ bool ufshcd_crypto_enable(struct ufs_hba *hba)
/* Reset might clear all keys, so reprogram all the keys. */
blk_crypto_reprogram_all_keys(&hba->crypto_profile);
if (hba->quirks & UFSHCD_QUIRK_BROKEN_CRYPTO_ENABLE)
return false;
return true;
}

7
include/ufs/ufshcd.h
View File

@ -654,6 +654,13 @@ enum ufshcd_quirks {
* ufs_hba_variant_ops::init() must do it instead.
*/
UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE = 1 << 22,
/*
* This quirk needs to be enabled if the host controller supports inline
* encryption but does not support the CRYPTO_GENERAL_ENABLE bit, i.e.
* host controller initialization fails if that bit is set.
*/
UFSHCD_QUIRK_BROKEN_CRYPTO_ENABLE = 1 << 23,
};
enum ufshcd_caps {