From: Girish K S <ks.giri@xxxxxxxxxxx>
Added support for the EEE(Energy Efficient Ethernet)
in 10G ethernet driver.
Signed-off-by: Girish K S <ks.giri@xxxxxxxxxxx>
Signed-off-by: Byungho An <bh74.an@xxxxxxxxxxx>
---
drivers/net/ethernet/samsung/xgmac_common.h | 54 +++++++++
drivers/net/ethernet/samsung/xgmac_core.c | 86 +++++++++++++-
drivers/net/ethernet/samsung/xgmac_ethtool.c | 47 ++++++++
drivers/net/ethernet/samsung/xgmac_main.c | 152 ++++++++++++++++++++++++-
drivers/net/ethernet/samsung/xgmac_platform.c | 4 +
drivers/net/ethernet/samsung/xgmac_reg.h | 5 +
6 files changed, 346 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/samsung/xgmac_common.h b/drivers/net/ethernet/samsung/xgmac_common.h
index eb78c84..6b7f1de 100644
--- a/drivers/net/ethernet/samsung/xgmac_common.h
+++ b/drivers/net/ethernet/samsung/xgmac_common.h
@@ -118,6 +118,33 @@ struct xgmac_mtl_ops;
#define RX_PTP_SIGNAL 0x0A
#define RX_PTP_RESV_MSG 0x0F
+/* EEE-LPI mode flags*/
+#define TX_ENTRY_LPI_MODE 0x10
+#define TX_EXIT_LPI_MODE 0x20
+#define RX_ENTRY_LPI_MODE 0x40
+#define RX_EXIT_LPI_MODE 0x80
+
+/* EEE-LPI Interrupt status flag */
+#define LPI_INT_STATUS BIT(5)
+
+/* EEE-LPI Default timer values */
+#define LPI_LINK_STATUS_TIMER 0x3E8
+#define LPI_MAC_WAIT_TIMER 0x00
+
+/* EEE-LPI Control and status definitions */
+#define LPI_CTRL_STATUS_TXA BIT(19)
+#define LPI_CTRL_STATUS_PLSDIS BIT(18)
+#define LPI_CTRL_STATUS_PLS BIT(17)
+#define LPI_CTRL_STATUS_LPIEN BIT(16)
+#define LPI_CTRL_STATUS_TXRSTP BIT(11)
+#define LPI_CTRL_STATUS_RXRSTP BIT(10)
+#define LPI_CTRL_STATUS_RLPIST BIT(9)
+#define LPI_CTRL_STATUS_TLPIST BIT(8)
+#define LPI_CTRL_STATUS_RLPIEX BIT(3)
+#define LPI_CTRL_STATUS_RLPIEN BIT(2)
+#define LPI_CTRL_STATUS_TLPIEX BIT(1)
+#define LPI_CTRL_STATUS_TLPIEN BIT(0)
+
enum dma_irq_status {
tx_hard_error = BIT(0),
tx_bump_tc = BIT(1),
@@ -202,6 +229,13 @@ struct xgmac_extra_stats {
unsigned long rx_buffer_access_err;
unsigned long rx_data_transfer_err;
+ /* EEE-LPI stats */
+ unsigned long tx_lpi_entry_n;
+ unsigned long tx_lpi_exit_n;
+ unsigned long rx_lpi_entry_n;
+ unsigned long rx_lpi_exit_n;
+ unsigned long eee_wakeup_error_n;
+
/* RX specific */
/* L2 error */
unsigned long rx_code_gmii_err;
@@ -310,6 +344,13 @@ struct xgmac_core_ops {
unsigned char feature_index);
/* adjust XGMAC speed */
void (*set_speed)(void __iomem *ioaddr, unsigned char speed);
+
+ /* EEE-LPI specific operations */
+ void (*set_eee_mode)(void __iomem *ioaddr);
+ void (*reset_eee_mode)(void __iomem *ioaddr);
+ void (*set_eee_timer)(void __iomem *ioaddr, const int ls,
+ const int tw);
+ void (*set_eee_pls)(void __iomem *ioaddr, const int link);
};
const struct xgmac_core_ops *xgmac_get_core_ops(void);
@@ -371,6 +412,8 @@ struct xgmac_hw_features {
/* IEEE 1588-2008 */
unsigned int atime_stamp;
+ unsigned int eee;
+
unsigned int tx_csum_offload;
unsigned int rx_csum_offload;
unsigned int multi_macaddr;
@@ -451,6 +494,14 @@ struct xgmac_priv_data {
u32 adv_ts;
int use_riwt;
spinlock_t ptp_lock;
+
+ /* EEE-LPI specific members */
+ struct timer_list eee_ctrl_timer;
+ bool tx_path_in_lpi_mode;
+ int lpi_irq;
+ int eee_enabled;
+ int eee_active;
+ int tx_lpi_timer;
};
/* Function prototypes */
@@ -473,4 +524,7 @@ extern int xgmac_restore(struct net_device *ndev);
extern const struct xgmac_mtl_ops *xgmac_get_mtl_ops(void);
+void xgmac_disable_eee_mode(struct xgmac_priv_data * const priv);
+bool xgmac_eee_init(struct xgmac_priv_data * const priv);
+
#endif /* __XGMAC_COMMON_H__ */
diff --git a/drivers/net/ethernet/samsung/xgmac_core.c b/drivers/net/ethernet/samsung/xgmac_core.c
index 931d05b..ed475fa 100644
--- a/drivers/net/ethernet/samsung/xgmac_core.c
+++ b/drivers/net/ethernet/samsung/xgmac_core.c
@@ -46,11 +46,38 @@ static void xgmac_core_dump_regs(void __iomem *ioaddr)
{
}
+static int xgmac_get_lpi_status(void __iomem *ioaddr, const u32 irq_status)
+{
+ int status = 0;
+ int lpi_status;
+
+ /* Reading this register shall clear all the LPI status bits */
+ lpi_status = readl(ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+
+ if (lpi_status & LPI_CTRL_STATUS_TLPIEN)
+ status |= TX_ENTRY_LPI_MODE;
+ if (lpi_status & LPI_CTRL_STATUS_TLPIEX)
+ status |= TX_EXIT_LPI_MODE;
+ if (lpi_status & LPI_CTRL_STATUS_RLPIEN)
+ status |= RX_ENTRY_LPI_MODE;
+ if (lpi_status & LPI_CTRL_STATUS_RLPIEX)
+ status |= RX_EXIT_LPI_MODE;
+
+ return status;
+}
+
/* Handle extra events on specific interrupts hw dependent */
static int xgmac_core_host_irq_status(void __iomem *ioaddr,
struct xgmac_extra_stats *x)
{
- return 0;
+ int irq_status, status = 0;
+
+ irq_status = readl(ioaddr + XGMAC_CORE_INT_STATUS_REG);
+
+ if (unlikely(irq_status & LPI_INT_STATUS))
+ status |= xgmac_get_lpi_status(ioaddr, irq_status);
+
+ return status;
}
/* Set power management mode (e.g. magic frame) */
@@ -137,6 +164,59 @@ static void xgmac_core_set_speed(void __iomem *ioaddr,
writel(tx_cfg, ioaddr + XGMAC_CORE_TX_CONFIG_REG);
}
+static void xgmac_set_eee_mode(void __iomem *ioaddr)
+{
+ u32 ctrl;
+
+ /* Enable the LPI mode for transmit path with Tx automate bit set.
+ * When Tx Automate bit is set, MAC internally handles the entry
+ * to LPI mode after all outstanding and pending packets are
+ * transmitted.
+ */
+ ctrl = readl(ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+ ctrl |= LPI_CTRL_STATUS_LPIEN | LPI_CTRL_STATUS_TXA;
+ writel(ctrl, ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+}
+
+static void xgmac_reset_eee_mode(void __iomem *ioaddr)
+{
+ u32 ctrl;
+
+ ctrl = readl(ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+ ctrl &= ~(LPI_CTRL_STATUS_LPIEN | LPI_CTRL_STATUS_TXA);
+ writel(ctrl, ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+}
+
+static void xgmac_set_eee_pls(void __iomem *ioaddr, const int link)
+{
+ u32 ctrl;
+
+ ctrl = readl(ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+
+ /* If the PHY link status is UP then set PLS */
+ if (link)
+ ctrl |= LPI_CTRL_STATUS_PLS;
+ else
+ ctrl &= ~LPI_CTRL_STATUS_PLS;
+
+ writel(ctrl, ioaddr + XGMAC_CORE_LPI_CTRL_STATUS);
+}
+
+static void xgmac_set_eee_timer(void __iomem *ioaddr,
+ const int ls, const int tw)
+{
+ int value = ((tw & 0xffff)) | ((ls & 0x7ff) << 16);
+
+ /* Program the timers in the LPI timer control register:
+ * LS: minimum time (ms) for which the link
+ * status from PHY should be ok before transmitting
+ * the LPI pattern.
+ * TW: minimum time (us) for which the core waits
+ * after it has stopped transmitting the LPI pattern.
+ */
+ writel(value, ioaddr + XGMAC_CORE_LPI_TIMER_CTRL);
+}
+
const struct xgmac_core_ops core_ops = {
.core_init = xgmac_core_init,
.dump_regs = xgmac_core_dump_regs,
@@ -149,6 +229,10 @@ const struct xgmac_core_ops core_ops = {
.get_controller_version = xgmac_get_controller_version,
.get_hw_feature = xgmac_get_hw_feature,
.set_speed = xgmac_core_set_speed,
+ .set_eee_mode = xgmac_set_eee_mode,
+ .reset_eee_mode = xgmac_reset_eee_mode,
+ .set_eee_timer = xgmac_set_eee_timer,
+ .set_eee_pls = xgmac_set_eee_pls,
};
const struct xgmac_core_ops *xgmac_get_core_ops(void)
diff --git a/drivers/net/ethernet/samsung/xgmac_ethtool.c b/drivers/net/ethernet/samsung/xgmac_ethtool.c
index 684b260..48ef13e 100644
--- a/drivers/net/ethernet/samsung/xgmac_ethtool.c
+++ b/drivers/net/ethernet/samsung/xgmac_ethtool.c
@@ -26,10 +26,57 @@ struct xgmac_stats {
offsetof(struct xgmac_priv_data, xstats.m)}
static const struct xgmac_stats xgmac_gstrings_stats[] = {
+ XGMAC_STAT(tx_lpi_entry_n),
+ XGMAC_STAT(tx_lpi_exit_n),
+ XGMAC_STAT(rx_lpi_entry_n),
+ XGMAC_STAT(rx_lpi_exit_n),
+ XGMAC_STAT(eee_wakeup_error_n),
};
#define XGMAC_STATS_LEN ARRAY_SIZE(xgmac_gstrings_stats)
+static int xgmac_ethtool_get_eee(struct net_device *dev,
+ struct ethtool_eee *edata)
+{
+ struct xgmac_priv_data *priv = netdev_priv(dev);
+
+ if (!priv->hw_cap.eee)
+ return -EOPNOTSUPP;
+
+ edata->eee_enabled = priv->eee_enabled;
+ edata->eee_active = priv->eee_active;
+ edata->tx_lpi_timer = priv->tx_lpi_timer;
+
+ return phy_ethtool_get_eee(priv->phydev, edata);
+}
+
+static int xgmac_ethtool_set_eee(struct net_device *dev,
+ struct ethtool_eee *edata)
+{
+ struct xgmac_priv_data *priv = netdev_priv(dev);
+
+ priv->eee_enabled = edata->eee_enabled;
+
+ if (!priv->eee_enabled)
+ xgmac_disable_eee_mode(priv);
+ else {
+ /* We are asking for enabling the EEE but it is safe
+ * to verify all by invoking the eee_init function.
+ * In case of failure it will return an error.
+ */
+ priv->eee_enabled = xgmac_eee_init(priv);
+ if (!priv->eee_enabled)
+ return -EOPNOTSUPP;
+
+ /* Do not change tx_lpi_timer in case of failure */
+ priv->tx_lpi_timer = edata->tx_lpi_timer;
+ }
+
+ return phy_ethtool_set_eee(priv->phydev, edata);
+}
+
static const struct ethtool_ops xgmac_ethtool_ops = {
+ .get_eee = xgmac_ethtool_get_eee,
+ .set_eee = xgmac_ethtool_set_eee,
};
void xgmac_set_ethtool_ops(struct net_device *netdev)
diff --git a/drivers/net/ethernet/samsung/xgmac_main.c b/drivers/net/ethernet/samsung/xgmac_main.c
index ef7f55b..6d14c81 100644
--- a/drivers/net/ethernet/samsung/xgmac_main.c
+++ b/drivers/net/ethernet/samsung/xgmac_main.c
@@ -61,6 +61,7 @@ static int pause = XGMAC_PAUSE_TIME;
static int tx_tc = TC_DEFAULT;
static int rx_tc = TC_DEFAULT;
static int buf_sz = DMA_BUFFER_SIZE;
+static int eee_timer = XGMAC_DEFAULT_LPI_TIMER;
module_param(watchdog, int, S_IRUGO | S_IWUSR);
module_param(debug, int, S_IRUGO | S_IWUSR);
@@ -72,6 +73,7 @@ module_param(pause, int, S_IRUGO | S_IWUSR);
module_param(tx_tc, int, S_IRUGO | S_IWUSR);
module_param(rx_tc, int, S_IRUGO | S_IWUSR);
module_param(buf_sz, int, S_IRUGO | S_IWUSR);
+module_param(eee_timer, int, S_IRUGO | S_IWUSR);
static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
NETIF_MSG_LINK | NETIF_MSG_IFUP |
@@ -83,6 +85,8 @@ static irqreturn_t xgmac_rx_interrupt(int irq, void *dev_id);
#define XGMAC_COAL_TIMER(x) (jiffies + usecs_to_jiffies(x))
+#define XGMAC_LPI_TIMER(x) (jiffies + msecs_to_jiffies(x))
+
/**
* xgmac_verify_args - verify the driver parameters.
* Description: it verifies if some wrong parameter is passed to the driver.
@@ -104,6 +108,86 @@ static void xgmac_verify_args(void)
flow_ctrl = XGMAC_FLOW_OFF;
if (unlikely((pause < 0) || (pause > 0xffff)))
pause = XGMAC_PAUSE_TIME;
+ if (unlikely(eee_timer < 0))
+ eee_timer = XGMAC_DEFAULT_LPI_TIMER;
+}
+
+static void xgmac_enable_eee_mode(const struct xgmac_priv_data *priv)
+{
+ /* Check and enter in LPI mode */
+ if (!priv->tx_path_in_lpi_mode)
+ priv->hw->mac->set_eee_mode(priv->ioaddr);
+}
+
+void xgmac_disable_eee_mode(struct xgmac_priv_data * const priv)
+{
+ /* Exit and disable EEE in case of we are are in LPI state. */
+ priv->hw->mac->reset_eee_mode(priv->ioaddr);
+ del_timer_sync(&priv->eee_ctrl_timer);
+ priv->tx_path_in_lpi_mode = false;
+}
+
+/**
+ * xgmac_eee_ctrl_timer
+ * @arg : data hook
+ * Description:
+ * If there is no data transfer and if we are not in LPI state,
+ * then MAC Transmitter can be moved to LPI state.
+ */
+static void xgmac_eee_ctrl_timer(unsigned long arg)
+{
+ struct xgmac_priv_data *priv = (struct xgmac_priv_data *)arg;
+
+ xgmac_enable_eee_mode(priv);
+ mod_timer(&priv->eee_ctrl_timer, XGMAC_LPI_TIMER(eee_timer));
+}
+
+/**
+ * xgmac_eee_init
+ * @priv: private device pointer
+ * Description:
+ * If the EEE support has been enabled while configuring the driver,
+ * if the GMAC actually supports the EEE (from the HW cap reg) and the
+ * phy can also manage EEE, so enable the LPI state and start the timer
+ * to verify if the tx path can enter in LPI state.
+ */
+bool xgmac_eee_init(struct xgmac_priv_data * const priv)
+{
+ bool ret = false;
+
+ /* MAC core supports the EEE feature. */
+ if (priv->hw_cap.eee) {
+ /* Check if the PHY supports EEE */
+ if (phy_init_eee(priv->phydev, 1))
+ return false;
+
+ priv->eee_active = 1;
+ init_timer(&priv->eee_ctrl_timer);
+ priv->eee_ctrl_timer.function = xgmac_eee_ctrl_timer;
+ priv->eee_ctrl_timer.data = (unsigned long)priv;
+ priv->eee_ctrl_timer.expires = XGMAC_LPI_TIMER(eee_timer);
+ add_timer(&priv->eee_ctrl_timer);
+
+ priv->hw->mac->set_eee_timer(priv->ioaddr,
+ XGMAC_DEFAULT_LPI_TIMER,
+ priv->tx_lpi_timer);
+
+ pr_info("xgmac: Energy-Efficient Ethernet initialized\n");
+
+ ret = true;
+ }
+
+ return ret;
+}
+
+static void xgmac_eee_adjust(const struct xgmac_priv_data *priv)
+{
+ /* When the EEE has been already initialised we have to
+ * modify the PLS bit in the LPI ctrl & status reg according
+ * to the PHY link status. For this reason.
+ */
+ if (priv->eee_enabled)
+ priv->hw->mac->set_eee_pls(priv->ioaddr, priv->phydev->link);
}
/**
@@ -213,6 +297,9 @@ static void xgmac_adjust_link(struct net_device *dev)
if (new_state & netif_msg_link(priv))
phy_print_status(phydev);
+
+ /* Alter the MAC settings for EEE */
+ xgmac_eee_adjust(priv);
}
/**
@@ -756,7 +843,7 @@ static void xgmac_tx_queue_clean(struct xgmac_tx_queue *tqueue)
* @priv: driver private structure
* Description: it reclaims resources after transmission completes.
*/
-static void xgmac_tx_all_clean(struct xgmac_priv_data *priv)
+static void xgmac_tx_all_clean(struct xgmac_priv_data * const priv)
{
u8 queue_num;
@@ -764,6 +851,11 @@ static void xgmac_tx_all_clean(struct xgmac_priv_data *priv)
struct xgmac_tx_queue *tqueue = priv->txq[queue_num];
xgmac_tx_queue_clean(tqueue);
}
+
+ if ((priv->eee_enabled) && (!priv->tx_path_in_lpi_mode)) {
+ xgmac_enable_eee_mode(priv);
+ mod_timer(&priv->eee_ctrl_timer, XGMAC_LPI_TIMER(eee_timer));
+ }
}
/**
@@ -850,6 +942,7 @@ static int xgmac_get_hw_features(struct xgmac_priv_data * const priv)
features->multi_macaddr = XGMAC_HW_FEAT_MACADDR_COUNT(rval);
features->tstamp_srcselect = XGMAC_HW_FEAT_TSTMAP_SRC(rval);
features->sa_vlan_insert = XGMAC_HW_FEAT_SRCADDR_VLAN(rval);
+ features->eee = XGMAC_HW_FEAT_EEE(rval);
}
/* Read First Capability Register CAP[1] */
rval = priv->hw->mac->get_hw_feature(priv->ioaddr, 1);
@@ -1069,6 +1162,20 @@ static int xgmac_open(struct net_device *dev)
goto init_error;
}
+ /* If the LPI irq is different from the mac irq
+ * register a dedicated handler
+ */
+ if (priv->lpi_irq != dev->irq) {
+ ret = devm_request_irq(priv->device, priv->lpi_irq,
+ xgmac_common_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ pr_err("%s: ERROR: allocating the LPI IRQ %d (%d)\n",
+ __func__, priv->lpi_irq, ret);
+ goto init_error;
+ }
+ }
+
/* Request TX DMA irq lines */
XGMAC_FOR_EACH_QUEUE(XGMAC_TX_QUEUES, queue_num) {
ret = devm_request_irq(priv->device,
@@ -1124,6 +1231,9 @@ static int xgmac_open(struct net_device *dev)
priv->hw->dma->rx_watchdog(priv->ioaddr, XGMAC_MAX_DMA_RIWT);
}
+ priv->tx_lpi_timer = XGMAC_DEFAULT_LPI_TIMER;
+ priv->eee_enabled = xgmac_eee_init(priv);
+
napi_enable(&priv->napi);
netif_start_queue(dev);
@@ -1149,6 +1259,9 @@ static int xgmac_release(struct net_device *dev)
{
struct xgmac_priv_data *priv = netdev_priv(dev);
+ if (priv->eee_enabled)
+ del_timer_sync(&priv->eee_ctrl_timer);
+
/* Stop and disconnect the PHY */
if (priv->phydev) {
phy_stop(priv->phydev);
@@ -1244,6 +1357,9 @@ static netdev_tx_t xgmac_xmit(struct sk_buff *skb, struct net_device *dev)
/* get the spinlock */
spin_lock(&tqueue->tx_lock);
+ if (priv->tx_path_in_lpi_mode)
+ xgmac_disable_eee_mode(priv);
+
if (unlikely(xgmac_tx_avail(tqueue, tx_rsize) < nr_frags + 1)) {
if (!netif_tx_queue_stopped(dev_txq)) {
netif_tx_stop_queue(dev_txq);
@@ -1523,6 +1639,25 @@ static void xgmac_tx_timeout(struct net_device *dev)
*/
static irqreturn_t xgmac_common_interrupt(int irq, void *dev_id)
{
+ struct net_device *netdev = (struct net_device *)dev_id;
+ struct xgmac_priv_data *priv = netdev_priv(netdev);
+ int status;
+
+ status = priv->hw->mac->host_irq_status(priv->ioaddr, &priv->xstats);
+ /* For LPI we need to save the tx status */
+ if (status & TX_ENTRY_LPI_MODE) {
+ priv->xstats.tx_lpi_entry_n++;
+ priv->tx_path_in_lpi_mode = true;
+ }
+ if (status & TX_EXIT_LPI_MODE) {
+ priv->xstats.tx_lpi_exit_n++;
+ priv->tx_path_in_lpi_mode = false;
+ }
+ if (status & RX_ENTRY_LPI_MODE)
+ priv->xstats.rx_lpi_entry_n++;
+ if (status & RX_EXIT_LPI_MODE)
+ priv->xstats.rx_lpi_exit_n++;
+
return IRQ_HANDLED;
}
@@ -2177,7 +2312,21 @@ module_exit(xgmac_exit);
#ifndef MODULE
static int __init xgmac_cmdline_opt(char *str)
{
+ char *opt;
+
+ if (!str || !*str)
+ return -EINVAL;
+ while ((opt = strsep(&str, ",")) != NULL) {
+ if (!strncmp(opt, "eee_timer:", 6)) {
+ if (kstrtoint(opt + 10, 0, &eee_timer))
+ goto err;
+ }
+ }
return 0;
+
+err:
+ pr_err("%s: ERROR broken module parameter conversion", __func__);
+ return -EINVAL;
}
__setup("xgmaceth=", xgmac_cmdline_opt);
@@ -2197,6 +2346,7 @@ MODULE_PARM_DESC(pause, "Flow Control Pause Time");
MODULE_PARM_DESC(tx_tc, "TX MTL threshold control value");
MODULE_PARM_DESC(rx_tc, "RX MTL threshold control value");
MODULE_PARM_DESC(buf_sz, "DMA buffer size");
+MODULE_PARM_DESC(eee_timer, "EEE-LPI Default LS timer value");
MODULE_AUTHOR("Siva Reddy Kallam <siva.kallam@xxxxxxxxxxx>");
MODULE_AUTHOR("ByungHo An <bh74.an@xxxxxxxxxxx>");
diff --git a/drivers/net/ethernet/samsung/xgmac_platform.c b/drivers/net/ethernet/samsung/xgmac_platform.c
index 1bb327a2..e988e38 100644
--- a/drivers/net/ethernet/samsung/xgmac_platform.c
+++ b/drivers/net/ethernet/samsung/xgmac_platform.c
@@ -166,6 +166,10 @@ static int xgmac_platform_probe(struct platform_device *pdev)
}
}
+ priv->lpi_irq = irq_of_parse_and_map(dev->of_node, loop++);
+ if (priv->lpi_irq == -ENXIO)
+ priv->lpi_irq = priv->dev->irq;
+
platform_set_drvdata(pdev, priv->dev);
pr_debug("XGMAC platform driver registration completed");
diff --git a/drivers/net/ethernet/samsung/xgmac_reg.h b/drivers/net/ethernet/samsung/xgmac_reg.h
index 11ae281..87fbff0 100644
--- a/drivers/net/ethernet/samsung/xgmac_reg.h
+++ b/drivers/net/ethernet/samsung/xgmac_reg.h
@@ -25,6 +25,11 @@
#define XGMAC_CORE_HASH_TABLE_REG5 0x0024
#define XGMAC_CORE_HASH_TABLE_REG6 0x0028
#define XGMAC_CORE_HASH_TABLE_REG7 0x002C
+
+/* EEE-LPI Registers */
+#define XGMAC_CORE_LPI_CTRL_STATUS 0x00D0
+#define XGMAC_CORE_LPI_TIMER_CTRL 0x00D4
+
/* VLAN Specific Registers */
#define XGMAC_CORE_VLAN_TAG_REG 0x0050
#define XGMAC_CORE_VLAN_HASHTAB_REG 0x0058
--
1.7.10.4
--
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