mlxsw: reg: Add Management Binary Code Transfer Register

The MBCT register allows to transfer binary INI codes from the host to
the management FW by transferring it by chunks of maximum 1KB.
Signed-off-by: NJiri Pirko <jiri@nvidia.com>
Signed-off-by: NIdo Schimmel <idosch@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/reg.h

@@ -11492,6 +11492,127 @@ mlxsw_reg_mgpir_unpack(char *payload, u8 *num_of_devices,
 		*num_of_slots = mlxsw_reg_mgpir_num_of_slots_get(payload);
 }
 
+/* MBCT - Management Binary Code Transfer Register
+ * -----------------------------------------------
+ * This register allows to transfer binary codes from the host to
+ * the management FW by transferring it by chunks of maximum 1KB.
+ */
+#define MLXSW_REG_MBCT_ID 0x9120
+#define MLXSW_REG_MBCT_LEN 0x420
+
+MLXSW_REG_DEFINE(mbct, MLXSW_REG_MBCT_ID, MLXSW_REG_MBCT_LEN);
+
+/* reg_mbct_slot_index
+ * Slot index. 0 is reserved.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, mbct, slot_index, 0x00, 0, 4);
+
+/* reg_mbct_data_size
+ * Actual data field size in bytes for the current data transfer.
+ * Access: WO
+ */
+MLXSW_ITEM32(reg, mbct, data_size, 0x04, 0, 11);
+
+enum mlxsw_reg_mbct_op {
+	MLXSW_REG_MBCT_OP_ERASE_INI_IMAGE = 1,
+	MLXSW_REG_MBCT_OP_DATA_TRANSFER, /* Download */
+	MLXSW_REG_MBCT_OP_ACTIVATE,
+	MLXSW_REG_MBCT_OP_CLEAR_ERRORS = 6,
+	MLXSW_REG_MBCT_OP_QUERY_STATUS,
+};
+
+/* reg_mbct_op
+ * Access: WO
+ */
+MLXSW_ITEM32(reg, mbct, op, 0x08, 28, 4);
+
+/* reg_mbct_last
+ * Indicates that the current data field is the last chunk of the INI.
+ * Access: WO
+ */
+MLXSW_ITEM32(reg, mbct, last, 0x08, 26, 1);
+
+/* reg_mbct_oee
+ * Opcode Event Enable. When set a BCTOE event will be sent once the opcode
+ * was executed and the fsm_state has changed.
+ * Access: WO
+ */
+MLXSW_ITEM32(reg, mbct, oee, 0x08, 25, 1);
+
+enum mlxsw_reg_mbct_status {
+	/* Partial data transfer completed successfully and ready for next
+	 * data transfer.
+	 */
+	MLXSW_REG_MBCT_STATUS_PART_DATA = 2,
+	MLXSW_REG_MBCT_STATUS_LAST_DATA,
+	MLXSW_REG_MBCT_STATUS_ERASE_COMPLETE,
+	/* Error - trying to erase INI while it being used. */
+	MLXSW_REG_MBCT_STATUS_ERROR_INI_IN_USE,
+	/* Last data transfer completed, applying magic pattern. */
+	MLXSW_REG_MBCT_STATUS_ERASE_FAILED = 7,
+	MLXSW_REG_MBCT_STATUS_INI_ERROR,
+	MLXSW_REG_MBCT_STATUS_ACTIVATION_FAILED,
+	MLXSW_REG_MBCT_STATUS_ILLEGAL_OPERATION = 11,
+};
+
+/* reg_mbct_status
+ * Status.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mbct, status, 0x0C, 24, 5);
+
+enum mlxsw_reg_mbct_fsm_state {
+	MLXSW_REG_MBCT_FSM_STATE_INI_IN_USE = 5,
+	MLXSW_REG_MBCT_FSM_STATE_ERROR,
+};
+
+/* reg_mbct_fsm_state
+ * FSM state.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mbct, fsm_state,  0x0C, 16, 4);
+
+#define MLXSW_REG_MBCT_DATA_LEN 1024
+
+/* reg_mbct_data
+ * Up to 1KB of data.
+ * Access: WO
+ */
+MLXSW_ITEM_BUF(reg, mbct, data, 0x20, MLXSW_REG_MBCT_DATA_LEN);
+
+static inline void mlxsw_reg_mbct_pack(char *payload, u8 slot_index,
+				       enum mlxsw_reg_mbct_op op, bool oee)
+{
+	MLXSW_REG_ZERO(mbct, payload);
+	mlxsw_reg_mbct_slot_index_set(payload, slot_index);
+	mlxsw_reg_mbct_op_set(payload, op);
+	mlxsw_reg_mbct_oee_set(payload, oee);
+}
+
+static inline void mlxsw_reg_mbct_dt_pack(char *payload,
+					  u16 data_size, bool last,
+					  const char *data)
+{
+	if (WARN_ON(data_size > MLXSW_REG_MBCT_DATA_LEN))
+		return;
+	mlxsw_reg_mbct_data_size_set(payload, data_size);
+	mlxsw_reg_mbct_last_set(payload, last);
+	mlxsw_reg_mbct_data_memcpy_to(payload, data);
+}
+
+static inline void
+mlxsw_reg_mbct_unpack(const char *payload, u8 *p_slot_index,
+		      enum mlxsw_reg_mbct_status *p_status,
+		      enum mlxsw_reg_mbct_fsm_state *p_fsm_state)
+{
+	if (p_slot_index)
+		*p_slot_index = mlxsw_reg_mbct_slot_index_get(payload);
+	*p_status = mlxsw_reg_mbct_status_get(payload);
+	if (p_fsm_state)
+		*p_fsm_state = mlxsw_reg_mbct_fsm_state_get(payload);
+}
+
 /* MDDQ - Management DownStream Device Query Register
  * --------------------------------------------------
  * This register allows to query the DownStream device properties. The desired
@@ -12990,6 +13111,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(mtptpt),
 	MLXSW_REG(mfgd),
 	MLXSW_REG(mgpir),
+	MLXSW_REG(mbct),
 	MLXSW_REG(mddq),
 	MLXSW_REG(mddc),
 	MLXSW_REG(mfde),