ixgbe: add FW recovery mode check

Add FM NVM recovery mode check. Allow the software to detect this.

Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

Approved by:	imp
Obtained from:	DPDK (5fb0a9acbb844b21691568c0014866e0e887bd19)
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D31621

(cherry picked from commit b622bdb4ebdfc6dfe1a332fcc912426559c829f3)

5 files changed, 34 insertions, 0 deletions

diff --git a/sys/dev/ixgbe/ixgbe_api.c b/sys/dev/ixgbe/ixgbe_api.c
index c71afcb0df67..5e662dac93f9 100644
--- a/sys/dev/ixgbe/ixgbe_api.c
+++ b/sys/dev/ixgbe/ixgbe_api.c
@@ -1307,6 +1307,18 @@ void ixgbe_restore_mdd_vf(struct ixgbe_hw *hw, u32 vf)
 }
 
 /**
+ *  ixgbe_fw_recovery_mode - Check if in FW NVM recovery mode
+ *  @hw: pointer to hardware structure
+ *
+ **/
+bool ixgbe_fw_recovery_mode(struct ixgbe_hw *hw)
+{
+	if (hw->mac.ops.fw_recovery_mode)
+		return hw->mac.ops.fw_recovery_mode(hw);
+	return false;
+}
+
+/**
  *  ixgbe_enter_lplu - Transition to low power states
  *  @hw: pointer to hardware structure
  *
diff --git a/sys/dev/ixgbe/ixgbe_api.h b/sys/dev/ixgbe/ixgbe_api.h
index c59b3a2dea9c..aabe573127f3 100644
--- a/sys/dev/ixgbe/ixgbe_api.h
+++ b/sys/dev/ixgbe/ixgbe_api.h
@@ -217,6 +217,7 @@ void ixgbe_disable_mdd(struct ixgbe_hw *hw);
 void ixgbe_enable_mdd(struct ixgbe_hw *hw);
 void ixgbe_mdd_event(struct ixgbe_hw *hw, u32 *vf_bitmap);
 void ixgbe_restore_mdd_vf(struct ixgbe_hw *hw, u32 vf);
+bool ixgbe_fw_recovery_mode(struct ixgbe_hw *hw);
 s32 ixgbe_enter_lplu(struct ixgbe_hw *hw);
 s32 ixgbe_handle_lasi(struct ixgbe_hw *hw);
 void ixgbe_set_rate_select_speed(struct ixgbe_hw *hw, ixgbe_link_speed speed);
diff --git a/sys/dev/ixgbe/ixgbe_type.h b/sys/dev/ixgbe/ixgbe_type.h
index 9619b771ea89..c3c29dbdba52 100644
--- a/sys/dev/ixgbe/ixgbe_type.h
+++ b/sys/dev/ixgbe/ixgbe_type.h
@@ -1080,6 +1080,9 @@ struct ixgbe_dmac_config {
 #define IXGBE_FWSM_MODE_MASK	0xE
 #define IXGBE_FWSM_TS_ENABLED	0x1
 #define IXGBE_FWSM_FW_MODE_PT	0x4
+#define IXGBE_FWSM_FW_NVM_RECOVERY_MODE (1 << 5)
+#define IXGBE_FWSM_EXT_ERR_IND_MASK 0x01F80000
+#define IXGBE_FWSM_FW_VAL_BIT	(1 << 15)
 
 /* ARC Subsystem registers */
 #define IXGBE_HICR		0x15F00
@@ -4010,6 +4013,7 @@ struct ixgbe_mac_operations {
 	void (*enable_mdd)(struct ixgbe_hw *hw);
 	void (*mdd_event)(struct ixgbe_hw *hw, u32 *vf_bitmap);
 	void (*restore_mdd_vf)(struct ixgbe_hw *hw, u32 vf);
+	bool (*fw_recovery_mode)(struct ixgbe_hw *hw);
 };
 
 struct ixgbe_phy_operations {
diff --git a/sys/dev/ixgbe/ixgbe_x550.c b/sys/dev/ixgbe/ixgbe_x550.c
index 6edeeb178289..aa91c4da7019 100644
--- a/sys/dev/ixgbe/ixgbe_x550.c
+++ b/sys/dev/ixgbe/ixgbe_x550.c
@@ -83,6 +83,7 @@ s32 ixgbe_init_ops_X550(struct ixgbe_hw *hw)
 	mac->ops.enable_mdd = ixgbe_enable_mdd_X550;
 	mac->ops.mdd_event = ixgbe_mdd_event_X550;
 	mac->ops.restore_mdd_vf = ixgbe_restore_mdd_vf_X550;
+	mac->ops.fw_recovery_mode = ixgbe_fw_recovery_mode_X550;
 	mac->ops.disable_rx = ixgbe_disable_rx_x550;
 	/* Manageability interface */
 	mac->ops.set_fw_drv_ver = ixgbe_set_fw_drv_ver_x550;
@@ -4676,3 +4677,18 @@ s32 ixgbe_set_fw_drv_ver_x550(struct ixgbe_hw *hw, u8 maj, u8 min,
 
 	return ret_val;
 }
+
+/**
+ * ixgbe_fw_recovery_mode_X550 - Check FW NVM recovery mode
+ * @hw: pointer t hardware structure
+ *
+ * Returns true if in FW NVM recovery mode.
+ **/
+bool ixgbe_fw_recovery_mode_X550(struct ixgbe_hw *hw)
+{
+	u32 fwsm;
+
+	fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM_BY_MAC(hw));
+
+	return !!(fwsm & IXGBE_FWSM_FW_NVM_RECOVERY_MODE);
+}
diff --git a/sys/dev/ixgbe/ixgbe_x550.h b/sys/dev/ixgbe/ixgbe_x550.h
index 44c9d06a42d9..ac2de750cfb7 100644
--- a/sys/dev/ixgbe/ixgbe_x550.h
+++ b/sys/dev/ixgbe/ixgbe_x550.h
@@ -122,4 +122,5 @@ s32 ixgbe_reset_phy_t_X550em(struct ixgbe_hw *hw);
 s32 ixgbe_identify_sfp_module_X550em(struct ixgbe_hw *hw);
 s32 ixgbe_led_on_t_X550em(struct ixgbe_hw *hw, u32 led_idx);
 s32 ixgbe_led_off_t_X550em(struct ixgbe_hw *hw, u32 led_idx);
+bool ixgbe_fw_recovery_mode_X550(struct ixgbe_hw *hw);
 #endif /* _IXGBE_X550_H_ */