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Message-Id: <1394603618-1044-4-git-send-email-jeffrey.t.kirsher@intel.com>
Date: Tue, 11 Mar 2014 22:53:28 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Carolyn Wyborny <carolyn.wyborny@...el.com>,
netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 03/13] igb: Fix for devices using ethtool for EEE settings
From: Carolyn Wyborny <carolyn.wyborny@...el.com>
This patch fixes a problem where using ethtool for EEE setting was not
working correctly. This patch also fixes a problem where
the function that checks for EEE status on i354 devices was not being
called and was causing warnings with static analysis tools.
Reported-by: Rashika Kheria <rashika.kheria@...il.com>
Reported-by: Josh Triplett <josh@...htriplett.org>
Reported-by: Stephen Hemminger <stephen@...workplumber.org>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@...el.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/igb/e1000_82575.h | 1 +
drivers/net/ethernet/intel/igb/igb.h | 3 ++
drivers/net/ethernet/intel/igb/igb_ethtool.c | 45 +++++++++++-------
drivers/net/ethernet/intel/igb/igb_main.c | 69 ++++++++++++++++++++++------
4 files changed, 88 insertions(+), 30 deletions(-)
diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.h b/drivers/net/ethernet/intel/igb/e1000_82575.h
index f12b086..2a721a1 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.h
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.h
@@ -265,6 +265,7 @@ u16 igb_rxpbs_adjust_82580(u32 data);
s32 igb_read_emi_reg(struct e1000_hw *, u16 addr, u16 *data);
s32 igb_set_eee_i350(struct e1000_hw *);
s32 igb_set_eee_i354(struct e1000_hw *);
+s32 igb_get_eee_status_i354(struct e1000_hw *hw, bool *status);
#define E1000_I2C_THERMAL_SENSOR_ADDR 0xF8
#define E1000_EMC_INTERNAL_DATA 0x00
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index fc3fc2c..a202c96 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -41,6 +41,7 @@
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/pci.h>
+#include <linux/mdio.h>
struct igb_adapter;
@@ -455,6 +456,7 @@ struct igb_adapter {
unsigned long link_check_timeout;
int copper_tries;
struct e1000_info ei;
+ u16 eee_advert;
};
#define IGB_FLAG_HAS_MSI (1 << 0)
@@ -471,6 +473,7 @@ struct igb_adapter {
#define IGB_FLAG_MAS_CAPABLE (1 << 11)
#define IGB_FLAG_MAS_ENABLE (1 << 12)
#define IGB_FLAG_HAS_MSIX (1 << 13)
+#define IGB_FLAG_EEE (1 << 14)
/* Media Auto Sense */
#define IGB_MAS_ENABLE_0 0X0001
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
index c7f5741..170e4db 100644
--- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
+++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
@@ -2587,7 +2587,7 @@ static int igb_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
struct igb_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
- u32 ipcnfg, eeer, ret_val;
+ u32 ret_val;
u16 phy_data;
if ((hw->mac.type < e1000_i350) ||
@@ -2596,16 +2596,25 @@ static int igb_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
edata->supported = (SUPPORTED_1000baseT_Full |
SUPPORTED_100baseT_Full);
+ if (!hw->dev_spec._82575.eee_disable)
+ edata->advertised =
+ mmd_eee_adv_to_ethtool_adv_t(adapter->eee_advert);
- ipcnfg = rd32(E1000_IPCNFG);
- eeer = rd32(E1000_EEER);
+ /* The IPCNFG and EEER registers are not supported on I354. */
+ if (hw->mac.type == e1000_i354) {
+ igb_get_eee_status_i354(hw, (bool *)&edata->eee_active);
+ } else {
+ u32 eeer;
+
+ eeer = rd32(E1000_EEER);
- /* EEE status on negotiated link */
- if (ipcnfg & E1000_IPCNFG_EEE_1G_AN)
- edata->advertised = ADVERTISED_1000baseT_Full;
+ /* EEE status on negotiated link */
+ if (eeer & E1000_EEER_EEE_NEG)
+ edata->eee_active = true;
- if (ipcnfg & E1000_IPCNFG_EEE_100M_AN)
- edata->advertised |= ADVERTISED_100baseT_Full;
+ if (eeer & E1000_EEER_TX_LPI_EN)
+ edata->tx_lpi_enabled = true;
+ }
/* EEE Link Partner Advertised */
switch (hw->mac.type) {
@@ -2616,8 +2625,8 @@ static int igb_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
return -ENODATA;
edata->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(phy_data);
-
break;
+ case e1000_i354:
case e1000_i210:
case e1000_i211:
ret_val = igb_read_xmdio_reg(hw, E1000_EEE_LP_ADV_ADDR_I210,
@@ -2633,12 +2642,10 @@ static int igb_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
break;
}
- if (eeer & E1000_EEER_EEE_NEG)
- edata->eee_active = true;
-
edata->eee_enabled = !hw->dev_spec._82575.eee_disable;
- if (eeer & E1000_EEER_TX_LPI_EN)
+ if ((hw->mac.type == e1000_i354) &&
+ (edata->eee_enabled))
edata->tx_lpi_enabled = true;
/* Report correct negotiated EEE status for devices that
@@ -2686,9 +2693,10 @@ static int igb_set_eee(struct net_device *netdev,
return -EINVAL;
}
- if (eee_curr.advertised != edata->advertised) {
+ if (edata->advertised &
+ ~(ADVERTISE_100_FULL | ADVERTISE_1000_FULL)) {
dev_err(&adapter->pdev->dev,
- "Setting EEE Advertisement is not supported\n");
+ "EEE Advertisement supports only 100Tx and or 100T full duplex\n");
return -EINVAL;
}
@@ -2698,9 +2706,14 @@ static int igb_set_eee(struct net_device *netdev,
return -EINVAL;
}
+ adapter->eee_advert = ethtool_adv_to_mmd_eee_adv_t(edata->advertised);
if (hw->dev_spec._82575.eee_disable != !edata->eee_enabled) {
hw->dev_spec._82575.eee_disable = !edata->eee_enabled;
- igb_set_eee_i350(hw);
+ adapter->flags |= IGB_FLAG_EEE;
+ if (hw->mac.type == e1000_i350)
+ igb_set_eee_i350(hw);
+ else
+ igb_set_eee_i354(hw);
/* reset link */
if (netif_running(netdev))
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index a96beb6..340a344 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1726,6 +1726,10 @@ int igb_up(struct igb_adapter *adapter)
hw->mac.get_link_status = 1;
schedule_work(&adapter->watchdog_task);
+ if ((adapter->flags & IGB_FLAG_EEE) &&
+ (!hw->dev_spec._82575.eee_disable))
+ adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T;
+
return 0;
}
@@ -1974,6 +1978,21 @@ void igb_reset(struct igb_adapter *adapter)
}
}
#endif
+ /*Re-establish EEE setting */
+ if (hw->phy.media_type == e1000_media_type_copper) {
+ switch (mac->type) {
+ case e1000_i350:
+ case e1000_i210:
+ case e1000_i211:
+ igb_set_eee_i350(hw);
+ break;
+ case e1000_i354:
+ igb_set_eee_i354(hw);
+ break;
+ default:
+ break;
+ }
+ }
if (!netif_running(adapter->netdev))
igb_power_down_link(adapter);
@@ -2560,23 +2579,36 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
(adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" :
(adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy",
adapter->num_rx_queues, adapter->num_tx_queues);
- switch (hw->mac.type) {
- case e1000_i350:
- case e1000_i210:
- case e1000_i211:
- igb_set_eee_i350(hw);
- break;
- case e1000_i354:
- if (hw->phy.media_type == e1000_media_type_copper) {
+ if (hw->phy.media_type == e1000_media_type_copper) {
+ switch (hw->mac.type) {
+ case e1000_i350:
+ case e1000_i210:
+ case e1000_i211:
+ /* Enable EEE for internal copper PHY devices */
+ err = igb_set_eee_i350(hw);
+ if ((!err) &&
+ (!hw->dev_spec._82575.eee_disable)) {
+ adapter->eee_advert =
+ MDIO_EEE_100TX | MDIO_EEE_1000T;
+ adapter->flags |= IGB_FLAG_EEE;
+ }
+ break;
+ case e1000_i354:
if ((rd32(E1000_CTRL_EXT) &
- E1000_CTRL_EXT_LINK_MODE_SGMII))
- igb_set_eee_i354(hw);
+ E1000_CTRL_EXT_LINK_MODE_SGMII)) {
+ err = igb_set_eee_i354(hw);
+ if ((!err) &&
+ (!hw->dev_spec._82575.eee_disable)) {
+ adapter->eee_advert =
+ MDIO_EEE_100TX | MDIO_EEE_1000T;
+ adapter->flags |= IGB_FLAG_EEE;
+ }
+ }
+ break;
+ default:
+ break;
}
- break;
- default:
- break;
}
-
pm_runtime_put_noidle(&pdev->dev);
return 0;
@@ -4158,6 +4190,15 @@ static void igb_watchdog_task(struct work_struct *work)
(ctrl & E1000_CTRL_RFCE) ? "RX" :
(ctrl & E1000_CTRL_TFCE) ? "TX" : "None");
+ /* disable EEE if enabled */
+ if ((adapter->flags & IGB_FLAG_EEE) &&
+ (adapter->link_duplex == HALF_DUPLEX)) {
+ dev_info(&adapter->pdev->dev,
+ "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n");
+ adapter->hw.dev_spec._82575.eee_disable = true;
+ adapter->flags &= ~IGB_FLAG_EEE;
+ }
+
/* check if SmartSpeed worked */
igb_check_downshift(hw);
if (phy->speed_downgraded)
--
1.8.3.1
--
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