From 09b068d45737abb49320ab25cb4ed2916017ace7 Mon Sep 17 00:00:00 2001 From: Carolyn Wyborny Date: Fri, 11 Mar 2011 20:42:13 -0800 Subject: [PATCH] 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 Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher --- drivers/net/igb/e1000_82575.c | 46 ++++++++++++++++++++++++++++++++- drivers/net/igb/e1000_82575.h | 1 + drivers/net/igb/e1000_defines.h | 7 +++++ drivers/net/igb/e1000_hw.h | 1 + drivers/net/igb/e1000_regs.h | 4 +++ drivers/net/igb/igb_main.c | 8 +++++- 6 files changed, 65 insertions(+), 2 deletions(-) diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c index 65c1833244f..20d172aeb1c 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 1d01af2472e..dd6df349899 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 92e11da2574..79267813982 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 eec9ed73558..17569bfe3f2 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 61713548c02..b2f8e593da8 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 3666b967846..8643f8c2919 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: -- 2.20.1