[dpdk-dev] [PATCH 07/29] net/ixgbe/base: add support to store LED link active

[Wei Dai <wei.dai@intel.com>]

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.
LED link active is used for adapter identify/blink support.

Signed-off-by: Wei Dai <wei.dai@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_common.c | 45 +++++++++++++++++++++++++++++++++++
 drivers/net/ixgbe/base/ixgbe_common.h |  1 +
 drivers/net/ixgbe/base/ixgbe_type.h   |  2 ++
 3 files changed, 48 insertions(+)

diff --git a/drivers/net/ixgbe/base/ixgbe_common.c b/drivers/net/ixgbe/base/ixgbe_common.c
index a6016dc..89b4b5f 100644
--- a/drivers/net/ixgbe/base/ixgbe_common.c
+++ b/drivers/net/ixgbe/base/ixgbe_common.c
@@ -113,6 +113,7 @@ s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw)
 	mac->ops.led_off = ixgbe_led_off_generic;
 	mac->ops.blink_led_start = ixgbe_blink_led_start_generic;
 	mac->ops.blink_led_stop = ixgbe_blink_led_stop_generic;
+	mac->ops.init_led_link_act = ixgbe_init_led_link_act_generic;
 
 	/* RAR, Multicast, VLAN */
 	mac->ops.set_rar = ixgbe_set_rar_generic;
@@ -497,6 +498,9 @@ 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;
 }
 
@@ -1136,6 +1140,47 @@ s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *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 IXGBE_SUCCESS;
+		}
+	}
+
+	/*
+	 * 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:
+	case ixgbe_mac_X550EM_x:
+		mac->led_link_act = 1;
+		break;
+	default:
+		mac->led_link_act = 2;
+	}
+	return IXGBE_SUCCESS;
+}
+
+/**
  *  ixgbe_led_on_generic - Turns on the software controllable LEDs.
  *  @hw: pointer to hardware structure
  *  @index: led number to turn on
diff --git a/drivers/net/ixgbe/base/ixgbe_common.h b/drivers/net/ixgbe/base/ixgbe_common.h
index ae28206..93e80ea 100644
--- a/drivers/net/ixgbe/base/ixgbe_common.h
+++ b/drivers/net/ixgbe/base/ixgbe_common.h
@@ -72,6 +72,7 @@ s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw);
 
 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index);
 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index);
+s32 ixgbe_init_led_link_act_generic(struct ixgbe_hw *hw);
 
 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw);
 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data);
diff --git a/drivers/net/ixgbe/base/ixgbe_type.h b/drivers/net/ixgbe/base/ixgbe_type.h
index 5b2506a..b90ae6d 100644
--- a/drivers/net/ixgbe/base/ixgbe_type.h
+++ b/drivers/net/ixgbe/base/ixgbe_type.h
@@ -3886,6 +3886,7 @@ struct ixgbe_mac_operations {
 	s32 (*led_off)(struct ixgbe_hw *, u32);
 	s32 (*blink_led_start)(struct ixgbe_hw *, u32);
 	s32 (*blink_led_stop)(struct ixgbe_hw *, u32);
+	s32 (*init_led_link_act)(struct ixgbe_hw *);
 
 	/* RAR, Multicast, VLAN */
 	s32 (*set_rar)(struct ixgbe_hw *, u32, u8 *, u32, u32);
@@ -4029,6 +4030,7 @@ struct ixgbe_mac_info {
 	struct ixgbe_dmac_config dmac_config;
 	bool set_lben;
 	u32  max_link_up_time;
+	u8   led_link_act;
 };
 
 struct ixgbe_phy_info {
-- 
2.7.4