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authorCarolyn Wyborny <carolyn.wyborny@intel.com>2011-03-11 20:42:13 -0800
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-03-12 04:09:20 -0800
commit09b068d45737abb49320ab25cb4ed2916017ace7 (patch)
tree489c503a733de2f1d632e27ac331a6be4bd7f41f /drivers/net/igb
parent422e05d12af9c1063d57210074b4e6db36a0cf39 (diff)
downloadlinux-09b068d45737abb49320ab25cb4ed2916017ace7.tar.bz2
igb: Add Energy Efficient Ethernet (EEE) for i350 devices.
This patch adds the EEE feature for i350 devices, enabled by default. Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/igb')
-rw-r--r--drivers/net/igb/e1000_82575.c46
-rw-r--r--drivers/net/igb/e1000_82575.h1
-rw-r--r--drivers/net/igb/e1000_defines.h7
-rw-r--r--drivers/net/igb/e1000_hw.h1
-rw-r--r--drivers/net/igb/e1000_regs.h4
-rw-r--r--drivers/net/igb/igb_main.c8
6 files changed, 65 insertions, 2 deletions
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
index 65c1833244f7..20d172aeb1c0 100644
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -195,7 +195,11 @@ static s32 igb_get_invariants_82575(struct e1000_hw *hw)
mac->arc_subsystem_valid =
(rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
? true : false;
-
+ /* enable EEE on i350 parts */
+ if (mac->type == e1000_i350)
+ dev_spec->eee_disable = false;
+ else
+ dev_spec->eee_disable = true;
/* physical interface link setup */
mac->ops.setup_physical_interface =
(hw->phy.media_type == e1000_media_type_copper)
@@ -1754,6 +1758,46 @@ u16 igb_rxpbs_adjust_82580(u32 data)
return ret_val;
}
+/**
+ * igb_set_eee_i350 - Enable/disable EEE support
+ * @hw: pointer to the HW structure
+ *
+ * Enable/disable EEE based on setting in dev_spec structure.
+ *
+ **/
+s32 igb_set_eee_i350(struct e1000_hw *hw)
+{
+ s32 ret_val = 0;
+ u32 ipcnfg, eeer, ctrl_ext;
+
+ ctrl_ext = rd32(E1000_CTRL_EXT);
+ if ((hw->mac.type != e1000_i350) ||
+ (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK))
+ goto out;
+ ipcnfg = rd32(E1000_IPCNFG);
+ eeer = rd32(E1000_EEER);
+
+ /* enable or disable per user setting */
+ if (!(hw->dev_spec._82575.eee_disable)) {
+ ipcnfg |= (E1000_IPCNFG_EEE_1G_AN |
+ E1000_IPCNFG_EEE_100M_AN);
+ eeer |= (E1000_EEER_TX_LPI_EN |
+ E1000_EEER_RX_LPI_EN |
+ E1000_EEER_LPI_FC);
+
+ } else {
+ ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN |
+ E1000_IPCNFG_EEE_100M_AN);
+ eeer &= ~(E1000_EEER_TX_LPI_EN |
+ E1000_EEER_RX_LPI_EN |
+ E1000_EEER_LPI_FC);
+ }
+ wr32(E1000_IPCNFG, ipcnfg);
+ wr32(E1000_EEER, eeer);
+out:
+
+ return ret_val;
+}
static struct e1000_mac_operations e1000_mac_ops_82575 = {
.init_hw = igb_init_hw_82575,
.check_for_link = igb_check_for_link_82575,
diff --git a/drivers/net/igb/e1000_82575.h b/drivers/net/igb/e1000_82575.h
index 1d01af2472e7..dd6df3498998 100644
--- a/drivers/net/igb/e1000_82575.h
+++ b/drivers/net/igb/e1000_82575.h
@@ -251,5 +251,6 @@ void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *, bool, int);
void igb_vmdq_set_loopback_pf(struct e1000_hw *, bool);
void igb_vmdq_set_replication_pf(struct e1000_hw *, bool);
u16 igb_rxpbs_adjust_82580(u32 data);
+s32 igb_set_eee_i350(struct e1000_hw *);
#endif
diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h
index 92e11da25749..79267813982a 100644
--- a/drivers/net/igb/e1000_defines.h
+++ b/drivers/net/igb/e1000_defines.h
@@ -758,6 +758,13 @@
#define E1000_MDIC_ERROR 0x40000000
#define E1000_MDIC_DEST 0x80000000
+/* 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 */
+#define E1000_EEER_TX_LPI_EN 0x00010000 /* EEE Tx LPI Enable */
+#define E1000_EEER_RX_LPI_EN 0x00020000 /* EEE Rx LPI Enable */
+#define E1000_EEER_LPI_FC 0x00040000 /* EEE Enable on FC */
+
/* SerDes Control */
#define E1000_GEN_CTL_READY 0x80000000
#define E1000_GEN_CTL_ADDRESS_SHIFT 8
diff --git a/drivers/net/igb/e1000_hw.h b/drivers/net/igb/e1000_hw.h
index eec9ed735588..17569bfe3f2e 100644
--- a/drivers/net/igb/e1000_hw.h
+++ b/drivers/net/igb/e1000_hw.h
@@ -488,6 +488,7 @@ struct e1000_mbx_info {
struct e1000_dev_spec_82575 {
bool sgmii_active;
bool global_device_reset;
+ bool eee_disable;
};
struct e1000_hw {
diff --git a/drivers/net/igb/e1000_regs.h b/drivers/net/igb/e1000_regs.h
index 61713548c027..b2f8e593da87 100644
--- a/drivers/net/igb/e1000_regs.h
+++ b/drivers/net/igb/e1000_regs.h
@@ -329,6 +329,10 @@
/* DMA Coalescing registers */
#define E1000_PCIEMISC 0x05BB8 /* PCIE misc config register */
+/* Energy Efficient Ethernet "EEE" register */
+#define E1000_IPCNFG 0x0E38 /* Internal PHY Configuration */
+#define E1000_EEER 0x0E30 /* Energy Efficient Ethernet */
+
/* 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 3666b967846a..8643f8c29199 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -2014,7 +2014,13 @@ static int __devinit igb_probe(struct pci_dev *pdev,
adapter->msix_entries ? "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:
+ igb_set_eee_i350(hw);
+ break;
+ default:
+ break;
+ }
return 0;
err_register: