iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i40e: Add EEE status getting & setting implementation

Browse Source 
Implement Energy Efficient Ethernet (EEE) status getting & setting.
The i40e_get_eee() requesting PHY EEE capabilities from firmware.
The i40e_set_eee() function requests PHY EEE capabilities
from firmware and sets PHY EEE advertising to full abilities or 0
depending whether EEE is to be enabled or disabled.

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Aleksandr Loktionov 2020-11-16 15:45:59 +00:00 committed by Tony Nguyen
parent 5effa78e7c
commit 95f352dca1
2 changed files with 123 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

123
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
View File

@ -5242,12 +5242,131 @@ static int i40e_get_module_eeprom(struct net_device *netdev,
static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
return -EOPNOTSUPP;
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp phy_cfg;
enum i40e_status_code status = 0;
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
/* Get initial PHY capabilities */
status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL);
if (status)
return -EAGAIN;
/* Check whether NIC configuration is compatible with Energy Efficient
* Ethernet (EEE) mode.
*/
if (phy_cfg.eee_capability == 0)
return -EOPNOTSUPP;
edata->supported = SUPPORTED_Autoneg;
edata->lp_advertised = edata->supported;
/* Get current configuration */
status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
if (status)
return -EAGAIN;
edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
edata->eee_enabled = !!edata->advertised;
edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
return 0;
}
static int i40e_is_eee_param_supported(struct net_device *netdev,
struct ethtool_eee *edata)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_ethtool_not_used {
u32 value;
const char *name;
} param[] = {
{edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
{edata->tx_lpi_timer, "tx-timer"},
{edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
};
int i;
for (i = 0; i < ARRAY_SIZE(param); i++) {
if (param[i].value) {
netdev_info(netdev,
"EEE setting %s not supported\n",
param[i].name);
return -EOPNOTSUPP;
}
}
return 0;
}
static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
return -EOPNOTSUPP;
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp abilities;
enum i40e_status_code status = I40E_SUCCESS;
struct i40e_aq_set_phy_config config;
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
__le16 eee_capability;
/* Deny parameters we don't support */
if (i40e_is_eee_param_supported(netdev, edata))
return -EOPNOTSUPP;
/* Get initial PHY capabilities */
status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
NULL);
if (status)
return -EAGAIN;
/* Check whether NIC configuration is compatible with Energy Efficient
* Ethernet (EEE) mode.
*/
if (abilities.eee_capability == 0)
return -EOPNOTSUPP;
/* Cache initial EEE capability */
eee_capability = abilities.eee_capability;
/* Get current PHY configuration */
status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
NULL);
if (status)
return -EAGAIN;
/* Cache current PHY configuration */
config.phy_type = abilities.phy_type;
config.phy_type_ext = abilities.phy_type_ext;
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 (edata->eee_enabled) {
config.eee_capability = eee_capability;
config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
} else {
config.eee_capability = 0;
config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
}
/* Apply modified PHY configuration */
status = i40e_aq_set_phy_config(hw, &config, NULL);
if (status)
return -EAGAIN;
return 0;
}
static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {

2
drivers/net/ethernet/intel/i40e/i40e_register.h
View File

@ -544,6 +544,8 @@
#define I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK I40E_MASK(0x1, I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT)
#define I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT 31
#define I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK I40E_MASK(0x1, I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT)
#define I40E_PRTPM_EEER_TX_LPI_EN_SHIFT 16
#define I40E_PRTPM_EEER_TX_LPI_EN_MASK I40E_MASK(0x1, I40E_PRTPM_EEER_TX_LPI_EN_SHIFT)
#define I40E_PRTPM_RLPIC 0x001E43A0 /* Reset: GLOBR */
#define I40E_PRTPM_TLPIC 0x001E43C0 /* Reset: GLOBR */
#define I40E_PRTRPB_DHW(_i) (0x000AC100 + ((_i) * 32)) /* _i=0...7 */ /* Reset: CORER */