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/phy.c b/drivers/net/e1000e/phy.c
index 1bc09b2..3e5940a 100644
--- a/drivers/net/e1000e/phy.c
+++ b/drivers/net/e1000e/phy.c
@@ -2472,7 +2472,7 @@
/* 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 @@
(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 @@
/* 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 @@
*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 @@
/* 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;