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scsi: ufs: core: Add UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE

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Add UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE which lets UFS host drivers
initialize the blk_crypto_profile themselves rather than have it be
initialized by ufshcd-core according to the UFSHCI standard.  This is
needed to support inline encryption on the "Exynos" UFS controller which
has a nonstandard interface.

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/20240708235330.103590-2-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 16:53:25 -07:00 committed by Martin K. Petersen
parent a420a8ed0a
commit c2a90eee29
2 changed files with 16 additions and 3 deletions
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10
drivers/ufs/core/ufshcd-crypto.c
View File

@ -159,6 +159,9 @@ int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
int err = 0;
enum blk_crypto_mode_num blk_mode_num;
if (hba->quirks & UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE)
return 0;
/*
* Don't use crypto if either the hardware doesn't advertise the
* standard crypto capability bit *or* if the vendor specific driver
@ -228,9 +231,10 @@ void ufshcd_init_crypto(struct ufs_hba *hba)
if (!(hba->caps & UFSHCD_CAP_CRYPTO))
return;
/* Clear all keyslots - the number of keyslots is (CFGC + 1) */
for (slot = 0; slot < hba->crypto_capabilities.config_count + 1; slot++)
ufshcd_clear_keyslot(hba, slot);
/* Clear all keyslots. */
for (slot = 0; slot < hba->crypto_profile.num_slots; slot++)
hba->crypto_profile.ll_ops.keyslot_evict(&hba->crypto_profile,
NULL, slot);
}
void ufshcd_crypto_register(struct ufs_hba *hba, struct request_queue *q)

9
include/ufs/ufshcd.h
View File

@ -645,6 +645,15 @@ enum ufshcd_quirks {
* thus need this quirk to skip related flow.
*/
UFSHCD_QUIRK_MCQ_BROKEN_RTC = 1 << 21,
/*
* This quirk needs to be enabled if the host controller supports inline
* encryption but it needs to initialize the crypto capabilities in a
* nonstandard way and/or needs to override blk_crypto_ll_ops. If
* enabled, the standard code won't initialize the blk_crypto_profile;
* ufs_hba_variant_ops::init() must do it instead.
*/
UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE = 1 << 22,
};
enum ufshcd_caps {