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[v4,12/15] ufs: host: support for generate, import and prepare key

Message ID 20240127232436.2632187-13-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State Superseded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 
UFS core defines a variant ops to tie the corresponding
generate, prepare and import wrapped key blk crypto ops
to the vendor specific implementation of wrapped keys.
This patch implements these variant ops.

Signed-off-by: Gaurav Kashyap <quic_gaurkash@quicinc.com>
Reviewed-by: Om Prakash Singh <quic_omprsing@quicinc.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 drivers/ufs/host/ufs-qcom.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
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Patch

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index e319176accd3..5de23ae0538c 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -189,10 +189,41 @@  static int ufs_qcom_ice_derive_sw_secret(struct ufs_hba *hba, const u8 wkey[],
 	return qcom_ice_derive_sw_secret(host->ice, wkey, wkey_size, sw_secret);
 }
 
+static int ufs_qcom_ice_generate_key(struct ufs_hba *hba,
+				     u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE])
+{
+	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+
+	return qcom_ice_generate_key(host->ice, lt_key);
+}
+
+static int ufs_qcom_ice_prepare_key(struct ufs_hba *hba,
+				    const u8 *lt_key, size_t lt_key_size,
+				    u8 eph_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE])
+{
+	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+
+	return qcom_ice_prepare_key(host->ice, lt_key, lt_key_size,
+				    eph_key);
+}
+
+static int ufs_qcom_ice_import_key(struct ufs_hba *hba,
+				   const u8 *imp_key, size_t imp_key_size,
+				   u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE])
+{
+	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+
+	return qcom_ice_import_key(host->ice, imp_key, imp_key_size,
+				   lt_key);
+}
+
 #else
 
 #define ufs_qcom_ice_program_key NULL
 #define ufs_qcom_ice_derive_sw_secret NULL
+#define ufs_qcom_ice_generate_key NULL
+#define ufs_qcom_ice_prepare_key NULL
+#define ufs_qcom_ice_import_key NULL
 
 static inline void ufs_qcom_ice_enable(struct ufs_qcom_host *host)
 {
@@ -1802,6 +1833,9 @@  static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
 	.config_scaling_param = ufs_qcom_config_scaling_param,
 	.program_key		= ufs_qcom_ice_program_key,
 	.derive_sw_secret	= ufs_qcom_ice_derive_sw_secret,
+	.generate_key		= ufs_qcom_ice_generate_key,
+	.prepare_key		= ufs_qcom_ice_prepare_key,
+	.import_key		= ufs_qcom_ice_import_key,
 	.reinit_notify		= ufs_qcom_reinit_notify,
 	.mcq_config_resource	= ufs_qcom_mcq_config_resource,
 	.get_hba_mac		= ufs_qcom_get_hba_mac,