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[v4,10/15] ufs: host: wrapped keys support in ufs qcom

Message ID 20240127232436.2632187-11-quic_gaurkash@quicinc.com
State Superseded
Headers show
Series Hardware wrapped key support for qcom ice and ufs | expand

Commit Message

Gaurav Kashyap (QUIC) Jan. 27, 2024, 11:14 p.m. UTC 
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 <quic_gaurkash@quicinc.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 drivers/ufs/host/ufs-qcom.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
diff mbox series

Patch

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,