net/i40e/base: get SAN MAC address

Add function that reads the adapter's Storage Area Network (SAN) MAC
address from NVM.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c
index 40aac06..9a6b3ed 100644 (file)
--- a/drivers/net/i40e/base/i40e_common.c
+++ b/drivers/net/i40e/base/i40e_common.c
@@ -1188,6 +1188,32 @@ void i40e_pre_tx_queue_cfg(struct i40e_hw *hw, u32 queue, bool enable)
        wr32(hw, I40E_GLLAN_TXPRE_QDIS(reg_block), reg_val);
 }
 
+/**
+ * i40e_get_san_mac_addr - get SAN MAC address
+ * @hw: pointer to the HW structure
+ * @mac_addr: pointer to SAN MAC address
+ *
+ * Reads the adapter's SAN MAC address from NVM
+ **/
+enum i40e_status_code i40e_get_san_mac_addr(struct i40e_hw *hw,
+                                           u8 *mac_addr)
+{
+       struct i40e_aqc_mac_address_read_data addrs;
+       enum i40e_status_code status;
+       u16 flags = 0;
+
+       status = i40e_aq_mac_address_read(hw, &flags, &addrs, NULL);
+       if (status)
+               return status;
+
+       if (flags & I40E_AQC_SAN_ADDR_VALID)
+               memcpy(mac_addr, &addrs.pf_san_mac, sizeof(addrs.pf_san_mac));
+       else
+               status = I40E_ERR_INVALID_MAC_ADDR;
+
+       return status;
+}
+
 /**
  *  i40e_read_pba_string - Reads part number string from EEPROM
  *  @hw: pointer to hardware structure

diff --git a/drivers/net/i40e/base/i40e_prototype.h b/drivers/net/i40e/base/i40e_prototype.h
index f17636b..3aab5ca 100644 (file)
--- a/drivers/net/i40e/base/i40e_prototype.h
+++ b/drivers/net/i40e/base/i40e_prototype.h
@@ -440,6 +440,7 @@ enum i40e_status_code i40e_get_port_mac_addr(struct i40e_hw *hw, u8 *mac_addr);
 enum i40e_status_code i40e_read_pba_string(struct i40e_hw *hw, u8 *pba_num,
                                            u32 pba_num_size);
 void i40e_pre_tx_queue_cfg(struct i40e_hw *hw, u32 queue, bool enable);
+enum i40e_status_code i40e_get_san_mac_addr(struct i40e_hw *hw, u8 *mac_addr);
 enum i40e_aq_link_speed i40e_get_link_speed(struct i40e_hw *hw);
 /* prototype for functions used for NVM access */
 enum i40e_status_code i40e_init_nvm(struct i40e_hw *hw);