igb: Add messaging for thermal sensor events on i350 devices
This feature adds messaging to the link status change to notify
the user if the device returned from a downshift or power off
event due to the Thermal Sensor feature in i350 parts. Feature
is only available on internal copper ports.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h
index 9bb1928..6b80d40 100644
--- a/drivers/net/igb/e1000_defines.h
+++ b/drivers/net/igb/e1000_defines.h
@@ -51,6 +51,7 @@
#define E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES 0x00C00000
#define E1000_CTRL_EXT_LINK_MODE_1000BASE_KX 0x00400000
#define E1000_CTRL_EXT_LINK_MODE_SGMII 0x00800000
+#define E1000_CTRL_EXT_LINK_MODE_GMII 0x00000000
#define E1000_CTRL_EXT_EIAME 0x01000000
#define E1000_CTRL_EXT_IRCA 0x00000001
/* Interrupt delay cancellation */
@@ -788,6 +789,10 @@
#define E1000_MDIC_ERROR 0x40000000
#define E1000_MDIC_DEST 0x80000000
+/* Thermal Sensor */
+#define E1000_THSTAT_PWR_DOWN 0x00000001 /* Power Down Event */
+#define E1000_THSTAT_LINK_THROTTLE 0x00000002 /* Link Speed Throttle Event */
+
/* Energy Efficient Ethernet */
#define E1000_IPCNFG_EEE_1G_AN 0x00000008 /* EEE Enable 1G AN */
#define E1000_IPCNFG_EEE_100M_AN 0x00000004 /* EEE Enable 100M AN */
diff --git a/drivers/net/igb/e1000_regs.h b/drivers/net/igb/e1000_regs.h
index ad77ed5..958ca3b 100644
--- a/drivers/net/igb/e1000_regs.h
+++ b/drivers/net/igb/e1000_regs.h
@@ -342,6 +342,9 @@
#define E1000_IPCNFG 0x0E38 /* Internal PHY Configuration */
#define E1000_EEER 0x0E30 /* Energy Efficient Ethernet */
+/* Thermal Sensor Register */
+#define E1000_THSTAT 0x08110 /* Thermal Sensor Status */
+
/* OS2BMC Registers */
#define E1000_B2OSPC 0x08FE0 /* BMC2OS packets sent by BMC */
#define E1000_B2OGPRC 0x04158 /* BMC2OS packets received by host */
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 5366f2a..3d850af 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -3550,7 +3550,7 @@
watchdog_task);
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
- u32 link;
+ u32 link, ctrl_ext, thstat;
int i;
link = igb_has_link(adapter);
@@ -3574,6 +3574,25 @@
((ctrl & E1000_CTRL_RFCE) ? "RX" :
((ctrl & E1000_CTRL_TFCE) ? "TX" : "None")));
+ /* check for thermal sensor event on i350,
+ * copper only */
+ if (hw->mac.type == e1000_i350) {
+ thstat = rd32(E1000_THSTAT);
+ ctrl_ext = rd32(E1000_CTRL_EXT);
+ if ((hw->phy.media_type ==
+ e1000_media_type_copper) && !(ctrl_ext &
+ E1000_CTRL_EXT_LINK_MODE_SGMII)) {
+ if (thstat &
+ E1000_THSTAT_LINK_THROTTLE) {
+ printk(KERN_INFO "igb: %s The "
+ "network adapter link "
+ "speed was downshifted "
+ "because it "
+ "overheated.\n",
+ netdev->name);
+ }
+ }
+ }
/* adjust timeout factor according to speed/duplex */
adapter->tx_timeout_factor = 1;
switch (adapter->link_speed) {
@@ -3599,6 +3618,22 @@
if (netif_carrier_ok(netdev)) {
adapter->link_speed = 0;
adapter->link_duplex = 0;
+ /* check for thermal sensor event on i350
+ * copper only*/
+ if (hw->mac.type == e1000_i350) {
+ thstat = rd32(E1000_THSTAT);
+ ctrl_ext = rd32(E1000_CTRL_EXT);
+ if ((hw->phy.media_type ==
+ e1000_media_type_copper) && !(ctrl_ext &
+ E1000_CTRL_EXT_LINK_MODE_SGMII)) {
+ if (thstat & E1000_THSTAT_PWR_DOWN) {
+ printk(KERN_ERR "igb: %s The "
+ "network adapter was stopped "
+ "because it overheated.\n",
+ netdev->name);
+ }
+ }
+ }
/* Links status message must follow this format */
printk(KERN_INFO "igb: %s NIC Link is Down\n",
netdev->name);