[PATCH v4 10/15] ufs: host: wrapped keys support in ufs qcom
From: Gaurav Kashyap <hidden>
Date: 2024-01-27 23:26:51
Also in:
linux-arm-msm, linux-crypto, linux-mmc, linux-scsi, lkml
Subsystem:
arm/qualcomm mailing list, scsi subsystem, the rest, universal flash storage host controller driver qualcomm hooks · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds, Manivannan Sadhasivam
Use the wrapped keys quirk when hwkm is supported/used. Whether to use HWKM or not would be decided during an ICE probe, and based on this information, UFS can decide to use wrapped keys or standard keys. Also, propagate the appropriate key size to the ICE driver when wrapped keys are used. Signed-off-by: Gaurav Kashyap <redacted> Tested-by: Neil Armstrong <neil.armstrong@linaro.org> --- drivers/ufs/host/ufs-qcom.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index acf352594362..5c9ba06438a9 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c@@ -123,6 +123,8 @@ static int ufs_qcom_ice_init(struct ufs_qcom_host *host) host->ice = ice; hba->caps |= UFSHCD_CAP_CRYPTO; + if (qcom_ice_hwkm_supported(host->ice)) + hba->quirks |= UFSHCD_QUIRK_USES_WRAPPED_CRYPTO_KEYS; return 0; }
@@ -160,7 +162,11 @@ static int ufs_qcom_ice_program_key(struct ufs_hba *hba, cap.key_size != UFS_CRYPTO_KEY_SIZE_256) return -EOPNOTSUPP; - ice_key_size = QCOM_ICE_CRYPTO_KEY_SIZE_256; + if (bkey->crypto_cfg.key_type == BLK_CRYPTO_KEY_TYPE_HW_WRAPPED) + ice_key_size = QCOM_ICE_CRYPTO_KEY_SIZE_WRAPPED; + else + ice_key_size = QCOM_ICE_CRYPTO_KEY_SIZE_256; + if (config_enable) return qcom_ice_program_key(host->ice, QCOM_ICE_CRYPTO_ALG_AES_XTS,
--
2.43.0