[v3,10/11] net/igc: implement MAC-loopback mode
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Commit Message
From: Alvin Zhang <alvinx.zhang@intel.com>
enable mac-loopback mode.
Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
---
drivers/net/igc/igc_ethdev.c | 23 +++++++++++++++++++++++
drivers/net/igc/igc_txrx.c | 3 +++
2 files changed, 26 insertions(+)
@@ -50,10 +50,17 @@
/* External VLAN Enable bit mask */
#define IGC_CTRL_EXT_EXT_VLAN (1u << 26)
+/* Speed select */
+#define IGC_CTRL_SPEED_MASK (7u << 8)
+#define IGC_CTRL_SPEED_2500 (6u << 8)
+
/* External VLAN Ether Type bit mask and shift */
#define IGC_VET_EXT 0xFFFF0000
#define IGC_VET_EXT_SHIFT 16
+/* Force EEE Auto-negotiation */
+#define IGC_EEER_EEE_FRC_AN (1u << 28)
+
/* Per Queue Good Packets Received Count */
#define IGC_PQGPRC(idx) (0x10010 + 0x100 * (idx))
/* Per Queue Good Octets Received Count */
@@ -635,6 +642,9 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
/* disable all wake up */
IGC_WRITE_REG(hw, IGC_WUC, 0);
+ /* disable checking EEE operation in MAC loopback mode */
+ igc_read_reg_check_clear_bits(hw, IGC_EEER, IGC_EEER_EEE_FRC_AN);
+
/* Set bit for Go Link disconnect */
igc_read_reg_check_set_bits(hw, IGC_82580_PHY_POWER_MGMT,
IGC_82580_PM_GO_LINKD);
@@ -1059,6 +1069,19 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
eth_igc_rxtx_control(dev, true);
eth_igc_link_update(dev, 0);
+ /* configure MAC-loopback mode */
+ if (dev->data->dev_conf.lpbk_mode == 1) {
+ uint32_t reg_val;
+
+ reg_val = IGC_READ_REG(hw, IGC_CTRL);
+ reg_val &= ~IGC_CTRL_SPEED_MASK;
+ reg_val |= IGC_CTRL_SLU | IGC_CTRL_FRCSPD |
+ IGC_CTRL_FRCDPX | IGC_CTRL_FD | IGC_CTRL_SPEED_2500;
+ IGC_WRITE_REG(hw, IGC_CTRL, reg_val);
+
+ igc_read_reg_check_set_bits(hw, IGC_EEER, IGC_EEER_EEE_FRC_AN);
+ }
+
return 0;
error_invalid_config:
@@ -1140,6 +1140,9 @@ int eth_igc_rx_descriptor_status(void *rx_queue, uint16_t offset)
IGC_RCTL_DPF |
(hw->mac.mc_filter_type << IGC_RCTL_MO_SHIFT);
+ if (dev->data->dev_conf.lpbk_mode == 1)
+ rctl |= IGC_RCTL_LBM_MAC;
+
rctl &= ~(IGC_RCTL_HSEL_MSK | IGC_RCTL_CFIEN | IGC_RCTL_CFI |
IGC_RCTL_PSP | IGC_RCTL_PMCF);