From c61bcb0fe1b0ee7db684cc020d13e86a73c67cfb Mon Sep 17 00:00:00 2001 From: Xiaolong Ye Date: Mon, 13 Jan 2020 10:39:24 +0800 Subject: [PATCH] net/i40e/base: support Energy Efficient Ethernet This change adds i40e_enable_eee() function controlling advertisement of Energy Efficient Ethernet mode (EEE). Signed-off-by: Piotr Pietruszewski Signed-off-by: Xiaolong Ye Acked-by: Qi Zhang Acked-by: Beilei Xing --- drivers/net/i40e/base/i40e_common.c | 64 ++++++++++++++++++++++++++ drivers/net/i40e/base/i40e_prototype.h | 1 + 2 files changed, 65 insertions(+) diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c index 4384a0795f..c2e7cf7d54 100644 --- a/drivers/net/i40e/base/i40e_common.c +++ b/drivers/net/i40e/base/i40e_common.c @@ -6306,6 +6306,70 @@ enum i40e_status_code i40e_aq_debug_dump(struct i40e_hw *hw, u8 cluster_id, return status; } + +/** + * i40e_enable_eee + * @hw: pointer to the hardware structure + * @enable: state of Energy Efficient Ethernet mode to be set + * + * Enables or disables Energy Efficient Ethernet (EEE) mode + * accordingly to @enable parameter. + **/ +enum i40e_status_code i40e_enable_eee(struct i40e_hw *hw, bool enable) +{ + struct i40e_aq_get_phy_abilities_resp abilities; + struct i40e_aq_set_phy_config config; + enum i40e_status_code status; + __le16 eee_capability; + + /* Get initial PHY capabilities */ + status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, + NULL); + if (status) + goto err; + + /* Check whether NIC configuration is compatible with Energy Efficient + * Ethernet (EEE) mode. + */ + if (abilities.eee_capability == 0) { + status = I40E_ERR_CONFIG; + goto err; + } + + /* Cache initial EEE capability */ + eee_capability = abilities.eee_capability; + + /* Get current configuration */ + status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, + NULL); + if (status) + goto err; + + /* Cache current configuration */ + config.phy_type = abilities.phy_type; + config.link_speed = abilities.link_speed; + config.abilities = abilities.abilities | + I40E_AQ_PHY_ENABLE_ATOMIC_LINK; + config.eeer = abilities.eeer_val; + config.low_power_ctrl = abilities.d3_lpan; + config.fec_config = abilities.fec_cfg_curr_mod_ext_info & + I40E_AQ_PHY_FEC_CONFIG_MASK; + + /* Set desired EEE state */ + if (enable) { + config.eee_capability = eee_capability; + config.eeer |= I40E_PRTPM_EEER_TX_LPI_EN_MASK; + } else { + config.eee_capability = 0; + config.eeer &= ~I40E_PRTPM_EEER_TX_LPI_EN_MASK; + } + + /* Save modified config */ + status = i40e_aq_set_phy_config(hw, &config, NULL); +err: + return status; +} + /** * i40e_read_bw_from_alt_ram * @hw: pointer to the hardware structure diff --git a/drivers/net/i40e/base/i40e_prototype.h b/drivers/net/i40e/base/i40e_prototype.h index 2f3e0bfee3..38beb270b1 100644 --- a/drivers/net/i40e/base/i40e_prototype.h +++ b/drivers/net/i40e/base/i40e_prototype.h @@ -458,6 +458,7 @@ void i40e_nvmupd_check_wait_event(struct i40e_hw *hw, u16 opcode, void i40e_nvmupd_clear_wait_state(struct i40e_hw *hw); void i40e_set_pci_config_data(struct i40e_hw *hw, u16 link_status); #endif /* PF_DRIVER */ +enum i40e_status_code i40e_enable_eee(struct i40e_hw *hw, bool enable); #if defined(I40E_QV) || defined(VF_DRIVER) enum i40e_status_code i40e_set_mac_type(struct i40e_hw *hw);