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ixgbe: Add support to retrieve and store LED link active

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This patch adds support to get the LED link active via the LEDCTL
register.  If the LEDCTL register does not have LED link active
(LED mode field = 0x0100) set then default LED link active returned.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Don Skidmore
2016-10-20 21:42:00 -04:00
committed by Jeff Kirsher
parent 0c1b7de4f3
commit 805cedd663
8 changed files with 57 additions and 2 deletions
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46
drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
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@@ -390,6 +390,9 @@ s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
status = hw->mac.ops.start_hw(hw);
}
/* Initialize the LED link active for LED blink support */
hw->mac.ops.init_led_link_act(hw);
return status;
}
@@ -772,6 +775,49 @@ s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
return ixgbe_disable_pcie_master(hw);
}
/**
* ixgbe_init_led_link_act_generic - Store the LED index link/activity.
* @hw: pointer to hardware structure
*
* Store the index for the link active LED. This will be used to support
* blinking the LED.
**/
s32 ixgbe_init_led_link_act_generic(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
u32 led_reg, led_mode;
u16 i;
led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
/* Get LED link active from the LEDCTL register */
for (i = 0; i < 4; i++) {
led_mode = led_reg >> IXGBE_LED_MODE_SHIFT(i);
if ((led_mode & IXGBE_LED_MODE_MASK_BASE) ==
IXGBE_LED_LINK_ACTIVE) {
mac->led_link_act = i;
return 0;
}
}
/* If LEDCTL register does not have the LED link active set, then use
* known MAC defaults.
*/
switch (hw->mac.type) {
case ixgbe_mac_x550em_a:
mac->led_link_act = 0;
break;
case ixgbe_mac_X550EM_x:
mac->led_link_act = 1;
break;
default:
mac->led_link_act = 2;
}
return 0;
}
/**
* ixgbe_led_on_generic - Turns on the software controllable LEDs.
* @hw: pointer to hardware structure