Commit 09b068d4 authored by Carolyn Wyborny's avatar Carolyn Wyborny Committed by Jeff Kirsher
Browse files

igb: Add Energy Efficient Ethernet (EEE) for i350 devices.



This patch adds the EEE feature for i350 devices, enabled by default.
Signed-off-by: default avatarCarolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: default avatarJeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 422e05d1
......@@ -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,
......
......@@ -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
......@@ -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
......
......@@ -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 {
......
......@@ -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 */
......
......@@ -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:
......
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