net/i40e/base: add function to read LPI statistics

There was no time duration statistics for LPI (Low Power Idle)
in EEE (Energy-Efficient Ethernet).
Added new procedure to get duration values from FW.
Otherwise there is no available procedure to get tx_lpi_duration
and rx_lpi_duration values.

Signed-off-by: Jaroslaw Gawin <jaroslawx.gawin@intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>

diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c
index 8144d95..d90012f 100644 (file)
--- a/drivers/net/i40e/base/i40e_common.c
+++ b/drivers/net/i40e/base/i40e_common.c
@@ -7083,6 +7083,62 @@ enum i40e_status_code i40e_get_lpi_counters(struct i40e_hw *hw,
        return I40E_SUCCESS;
 }
 
+/**
+ * i40e_get_lpi_duration - read LPI time duration from EEE statistics
+ * @hw: pointer to the hw struct
+ * @stat: pointer to structure with status of rx and tx lpi
+ * @tx_duration: pointer to memory for TX LPI time duration
+ * @rx_duration: pointer to memory for RX LPI time duration
+ *
+ * Read Low Power Idle (LPI) mode time duration from Energy Efficient
+ * Ethernet (EEE) statistics.
+ */
+enum i40e_status_code i40e_get_lpi_duration(struct i40e_hw *hw,
+                                           struct i40e_hw_port_stats *stat,
+                                           u64 *tx_duration, u64 *rx_duration)
+{
+       u32 tx_time_dur, rx_time_dur;
+       enum i40e_status_code retval;
+       u32 cmd_status;
+
+       if (hw->device_id != I40E_DEV_ID_10G_BASE_T_BC)
+               return I40E_ERR_NOT_IMPLEMENTED;
+
+       retval = i40e_aq_run_phy_activity
+               (hw, I40E_AQ_RUN_PHY_ACT_ID_USR_DFND,
+               I40E_AQ_RUN_PHY_ACT_DNL_OPCODE_GET_EEE_DUR,
+               &cmd_status, &tx_time_dur, &rx_time_dur, NULL);
+
+       if (retval)
+               return retval;
+       if ((cmd_status & I40E_AQ_RUN_PHY_ACT_CMD_STAT_MASK) !=
+           I40E_AQ_RUN_PHY_ACT_CMD_STAT_SUCC)
+               return I40E_ERR_ADMIN_QUEUE_ERROR;
+
+       if (hw->phy.link_info.link_speed == I40E_LINK_SPEED_1GB &&
+           !tx_time_dur && !rx_time_dur &&
+           stat->tx_lpi_status && stat->rx_lpi_status) {
+               retval = i40e_aq_run_phy_activity
+                       (hw, I40E_AQ_RUN_PHY_ACT_ID_USR_DFND,
+                       I40E_AQ_RUN_PHY_ACT_DNL_OPCODE_GET_EEE_STAT_DUR,
+                       &cmd_status,
+                       &tx_time_dur, &rx_time_dur, NULL);
+
+               if (retval)
+                       return retval;
+               if ((cmd_status & I40E_AQ_RUN_PHY_ACT_CMD_STAT_MASK) !=
+                   I40E_AQ_RUN_PHY_ACT_CMD_STAT_SUCC)
+                       return I40E_ERR_ADMIN_QUEUE_ERROR;
+               tx_time_dur = 0;
+               rx_time_dur = 0;
+       }
+
+       *tx_duration = tx_time_dur;
+       *rx_duration = rx_time_dur;
+
+       return retval;
+}
+
 /**
  * i40e_lpi_stat_update - update LPI counters with values relative to offset
  * @hw: pointer to the hw struct

diff --git a/drivers/net/i40e/base/i40e_prototype.h b/drivers/net/i40e/base/i40e_prototype.h
index 2b61989..0d1adb6 100644 (file)
--- a/drivers/net/i40e/base/i40e_prototype.h
+++ b/drivers/net/i40e/base/i40e_prototype.h
@@ -82,6 +82,9 @@ enum i40e_status_code i40e_lpi_stat_update(struct i40e_hw *hw,
                                           bool offset_loaded, u64 *tx_offset,
                                           u64 *tx_stat, u64 *rx_offset,
                                           u64 *rx_stat);
+enum i40e_status_code i40e_get_lpi_duration(struct i40e_hw *hw,
+                                           struct i40e_hw_port_stats *stat,
+                                           u64 *tx_duration, u64 *rx_duration);
 /* admin send queue commands */
 
 enum i40e_status_code i40e_aq_get_firmware_version(struct i40e_hw *hw,

diff --git a/drivers/net/i40e/base/i40e_type.h b/drivers/net/i40e/base/i40e_type.h
index d20b0fe..af90898 100644 (file)
--- a/drivers/net/i40e/base/i40e_type.h
+++ b/drivers/net/i40e/base/i40e_type.h
@@ -1498,6 +1498,8 @@ struct i40e_hw_port_stats {
        u32 rx_lpi_status;
        u64 tx_lpi_count;               /* etlpic */
        u64 rx_lpi_count;               /* erlpic */
+       u64 tx_lpi_duration;
+       u64 rx_lpi_duration;
 };
 
 /* Checksum and Shadow RAM pointers */