e1000e: add debug messages

Add some helpful debug messages.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 1ce2bf9..6efb77f 100644 (file)
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -314,8 +314,10 @@ static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
                phy->ops.write_reg = e1000e_write_phy_reg_bm;
                phy->ops.read_reg  = e1000e_read_phy_reg_bm;
                ret_val = e1000e_determine_phy_address(hw);
-               if (ret_val)
+               if (ret_val) {
+                       e_dbg("Cannot determine PHY addr. Erroring out\n");
                        return ret_val;
+               }
        }
 
        phy->id = 0;

diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c
index 1bc09b2..3e5940a 100644 (file)
--- a/drivers/net/e1000e/phy.c
+++ b/drivers/net/e1000e/phy.c
@@ -2472,7 +2472,7 @@ static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
        /* Gig must be disabled for MDIO accesses to page 800 */
        if ((hw->mac.type == e1000_pchlan) &&
           (!(er32(PHY_CTRL) & E1000_PHY_CTRL_GBE_DISABLE)))
-               e_dbg("Attempting to access page 800 while gig enabled\n");
+               e_dbg("Attempting to access page 800 while gig enabled.\n");
 
        /* All operations in this function are phy address 1 */
        hw->phy.addr = 1;
@@ -2482,20 +2482,26 @@ static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
                                  (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
 
        ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg);
-       if (ret_val)
+       if (ret_val) {
+               e_dbg("Could not read PHY page 769\n");
                goto out;
+       }
 
        /* First clear bit 4 to avoid a power state change */
        phy_reg &= ~(BM_WUC_HOST_WU_BIT);
        ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
-       if (ret_val)
+       if (ret_val) {
+               e_dbg("Could not clear PHY page 769 bit 4\n");
                goto out;
+       }
 
        /* Write bit 2 = 1, and clear bit 4 to 769_17 */
        ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG,
                                            phy_reg | BM_WUC_ENABLE_BIT);
-       if (ret_val)
+       if (ret_val) {
+               e_dbg("Could not write PHY page 769 bit 2\n");
                goto out;
+       }
 
        /* Select page 800 */
        ret_val = e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
@@ -2503,8 +2509,10 @@ static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
 
        /* Write the page 800 offset value using opcode 0x11 */
        ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ADDRESS_OPCODE, reg);
-       if (ret_val)
+       if (ret_val) {
+               e_dbg("Could not write address opcode to page 800\n");
                goto out;
+       }
 
        if (read) {
                /* Read the page 800 value using opcode 0x12 */
@@ -2516,8 +2524,10 @@ static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
                                                    *data);
        }
 
-       if (ret_val)
+       if (ret_val) {
+               e_dbg("Could not access data value from page 800\n");
                goto out;
+       }
 
        /*
         * Restore 769_17.2 to its original value
@@ -2528,6 +2538,10 @@ static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
 
        /* Clear 769_17.2 */
        ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
+       if (ret_val) {
+               e_dbg("Could not clear PHY page 769 bit 2\n");
+               goto out;
+       }
 
 out:
        return ret_val;