net/ixgbe/base: limit PHY token lock to MDIO access

This patch limits getting and putting the PHY Token to PHY MDIO
access only by adding ixgbe_read_phy_reg_x550a and
ixgbe_write_phy_reg_x550a. The PHY Token is only needed to
synchronize access to the MDIO shared between the two MAC instance.

Signed-off-by: Beilei Xing <beilei.xing@intel.com>

diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index 359ce2a..a38fb50 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -469,7 +469,8 @@ STATIC s32 ixgbe_identify_phy_x550em(struct ixgbe_hw *hw)
 {
        switch (hw->device_id) {
        case IXGBE_DEV_ID_X550EM_A_SFP:
-               hw->phy.phy_semaphore_mask = IXGBE_GSSR_TOKEN_SM;
+               hw->phy.ops.read_reg = ixgbe_read_phy_reg_x550a;
+               hw->phy.ops.write_reg = ixgbe_write_phy_reg_x550a;
                if (hw->bus.lan_id)
                        hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY1_SM;
                else
@@ -499,7 +500,8 @@ STATIC s32 ixgbe_identify_phy_x550em(struct ixgbe_hw *hw)
                return ixgbe_identify_phy_generic(hw);
        case IXGBE_DEV_ID_X550EM_A_1G_T:
        case IXGBE_DEV_ID_X550EM_A_1G_T_L:
-               hw->phy.phy_semaphore_mask = IXGBE_GSSR_TOKEN_SM;
+               hw->phy.ops.read_reg = ixgbe_read_phy_reg_x550a;
+               hw->phy.ops.write_reg = ixgbe_write_phy_reg_x550a;
                if (hw->bus.lan_id)
                        hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY1_SM;
                else
@@ -1245,6 +1247,8 @@ s32 ixgbe_put_phy_token(struct ixgbe_hw *hw)
                return status;
        if (token_cmd.hdr.cmd_or_resp.ret_status == FW_PHY_TOKEN_OK)
                return IXGBE_SUCCESS;
+
+       DEBUGOUT("Put PHY Token host interface command failed");
        return IXGBE_ERR_FW_RESP_INVALID;
 }
 
@@ -3869,6 +3873,63 @@ static void ixgbe_release_swfw_sync_X550a(struct ixgbe_hw *hw, u32 mask)
                ixgbe_release_swfw_sync_X540(hw, hmask);
 }
 
+/**
+ *  ixgbe_read_phy_reg_x550a  - Reads specified PHY register
+ *  @hw: pointer to hardware structure
+ *  @reg_addr: 32 bit address of PHY register to read
+ *  @phy_data: Pointer to read data from PHY register
+ *
+ *  Reads a value from a specified PHY register using the SWFW lock and PHY
+ *  Token. The PHY Token is needed since the MDIO is shared between to MAC
+ *  instances.
+ **/
+s32 ixgbe_read_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
+                            u32 device_type, u16 *phy_data)
+{
+       s32 status;
+       u32 mask = hw->phy.phy_semaphore_mask | IXGBE_GSSR_TOKEN_SM;
+
+       DEBUGFUNC("ixgbe_read_phy_reg_x550a");
+
+       if (hw->mac.ops.acquire_swfw_sync(hw, mask))
+               return IXGBE_ERR_SWFW_SYNC;
+
+       status = hw->phy.ops.read_reg_mdi(hw, reg_addr, device_type, phy_data);
+
+       hw->mac.ops.release_swfw_sync(hw, mask);
+
+       return status;
+}
+
+/**
+ *  ixgbe_write_phy_reg_x550a - Writes specified PHY register
+ *  @hw: pointer to hardware structure
+ *  @reg_addr: 32 bit PHY register to write
+ *  @device_type: 5 bit device type
+ *  @phy_data: Data to write to the PHY register
+ *
+ *  Writes a value to specified PHY register using the SWFW lock and PHY Token.
+ *  The PHY Token is needed since the MDIO is shared between to MAC instances.
+ **/
+s32 ixgbe_write_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
+                             u32 device_type, u16 phy_data)
+{
+       s32 status;
+       u32 mask = hw->phy.phy_semaphore_mask | IXGBE_GSSR_TOKEN_SM;
+
+       DEBUGFUNC("ixgbe_write_phy_reg_x550a");
+
+       if (hw->mac.ops.acquire_swfw_sync(hw, mask) == IXGBE_SUCCESS) {
+               status = ixgbe_write_phy_reg_mdi(hw, reg_addr, device_type,
+                                                phy_data);
+               hw->mac.ops.release_swfw_sync(hw, mask);
+       } else {
+               status = IXGBE_ERR_SWFW_SYNC;
+       }
+
+       return status;
+}
+
 /**
  * ixgbe_handle_lasi_ext_t_x550em - Handle external Base T PHY interrupt
  * @hw: pointer to hardware structure

diff --git a/drivers/net/ixgbe/base/ixgbe_x550.h b/drivers/net/ixgbe/base/ixgbe_x550.h
index a6ec3cb..b597b50 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_x550.h
+++ b/drivers/net/ixgbe/base/ixgbe_x550.h
@@ -146,6 +146,10 @@ s32 ixgbe_setup_mac_link_sfp_x550em(struct ixgbe_hw *hw,
 s32 ixgbe_setup_mac_link_sfp_x550a(struct ixgbe_hw *hw,
                                   ixgbe_link_speed speed,
                                   bool autoneg_wait_to_complete);
+s32 ixgbe_read_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
+                            u32 device_type, u16 *phy_data);
+s32 ixgbe_write_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
+                             u32 device_type, u16 phy_data);
 s32 ixgbe_handle_lasi_ext_t_x550em(struct ixgbe_hw *hw);
 s32 ixgbe_setup_mac_link_t_X550em(struct ixgbe_hw *hw,
                                  ixgbe_link_speed speed,