]> Pileus Git - ~andy/linux/blobdiff - drivers/net/e1000e/ethtool.c
e1000e: Add interrupt moderation run-time ethtool interface
[~andy/linux] / drivers / net / e1000e / ethtool.c
index 3b94a87b5272ab92f3b820ebc5a174b130b89c8b..ce045acce63e99b79685e291a8993e3acd940508 100644 (file)
@@ -46,8 +46,8 @@ struct e1000_stats {
 static const struct e1000_stats e1000_gstrings_stats[] = {
        { "rx_packets", E1000_STAT(stats.gprc) },
        { "tx_packets", E1000_STAT(stats.gptc) },
-       { "rx_bytes", E1000_STAT(stats.gorcl) },
-       { "tx_bytes", E1000_STAT(stats.gotcl) },
+       { "rx_bytes", E1000_STAT(stats.gorc) },
+       { "tx_bytes", E1000_STAT(stats.gotc) },
        { "rx_broadcast", E1000_STAT(stats.bprc) },
        { "tx_broadcast", E1000_STAT(stats.bptc) },
        { "rx_multicast", E1000_STAT(stats.mprc) },
@@ -83,7 +83,7 @@ static const struct e1000_stats e1000_gstrings_stats[] = {
        { "rx_flow_control_xoff", E1000_STAT(stats.xoffrxc) },
        { "tx_flow_control_xon", E1000_STAT(stats.xontxc) },
        { "tx_flow_control_xoff", E1000_STAT(stats.xofftxc) },
-       { "rx_long_byte_count", E1000_STAT(stats.gorcl) },
+       { "rx_long_byte_count", E1000_STAT(stats.gorc) },
        { "rx_csum_offload_good", E1000_STAT(hw_csum_good) },
        { "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },
        { "rx_header_split", E1000_STAT(rx_hdr_split) },
@@ -111,7 +111,7 @@ static int e1000_get_settings(struct net_device *netdev,
        struct e1000_hw *hw = &adapter->hw;
        u32 status;
 
-       if (hw->media_type == e1000_media_type_copper) {
+       if (hw->phy.media_type == e1000_media_type_copper) {
 
                ecmd->supported = (SUPPORTED_10baseT_Half |
                                   SUPPORTED_10baseT_Full |
@@ -165,7 +165,7 @@ static int e1000_get_settings(struct net_device *netdev,
                ecmd->duplex = -1;
        }
 
-       ecmd->autoneg = ((hw->media_type == e1000_media_type_fiber) ||
+       ecmd->autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||
                         hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
        return 0;
 }
@@ -187,7 +187,7 @@ static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
        mac->autoneg = 0;
 
        /* Fiber NICs only allow 1000 gbps Full duplex */
-       if ((adapter->hw.media_type == e1000_media_type_fiber) &&
+       if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
                spddplx != (SPEED_1000 + DUPLEX_FULL)) {
                ndev_err(adapter->netdev, "Unsupported Speed/Duplex "
                         "configuration\n");
@@ -241,7 +241,7 @@ static int e1000_set_settings(struct net_device *netdev,
 
        if (ecmd->autoneg == AUTONEG_ENABLE) {
                hw->mac.autoneg = 1;
-               if (hw->media_type == e1000_media_type_fiber)
+               if (hw->phy.media_type == e1000_media_type_fiber)
                        hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |
                                                     ADVERTISED_FIBRE |
                                                     ADVERTISED_Autoneg;
@@ -250,6 +250,8 @@ static int e1000_set_settings(struct net_device *netdev,
                                                     ADVERTISED_TP |
                                                     ADVERTISED_Autoneg;
                ecmd->advertising = hw->phy.autoneg_advertised;
+               if (adapter->fc_autoneg)
+                       hw->fc.original_type = e1000_fc_default;
        } else {
                if (e1000_set_spd_dplx(adapter, ecmd->speed + ecmd->duplex)) {
                        clear_bit(__E1000_RESETTING, &adapter->state);
@@ -279,11 +281,11 @@ static void e1000_get_pauseparam(struct net_device *netdev,
        pause->autoneg =
                (adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
 
-       if (hw->mac.fc == e1000_fc_rx_pause) {
+       if (hw->fc.type == e1000_fc_rx_pause) {
                pause->rx_pause = 1;
-       } else if (hw->mac.fc == e1000_fc_tx_pause) {
+       } else if (hw->fc.type == e1000_fc_tx_pause) {
                pause->tx_pause = 1;
-       } else if (hw->mac.fc == e1000_fc_full) {
+       } else if (hw->fc.type == e1000_fc_full) {
                pause->rx_pause = 1;
                pause->tx_pause = 1;
        }
@@ -302,18 +304,18 @@ static int e1000_set_pauseparam(struct net_device *netdev,
                msleep(1);
 
        if (pause->rx_pause && pause->tx_pause)
-               hw->mac.fc = e1000_fc_full;
+               hw->fc.type = e1000_fc_full;
        else if (pause->rx_pause && !pause->tx_pause)
-               hw->mac.fc = e1000_fc_rx_pause;
+               hw->fc.type = e1000_fc_rx_pause;
        else if (!pause->rx_pause && pause->tx_pause)
-               hw->mac.fc = e1000_fc_tx_pause;
+               hw->fc.type = e1000_fc_tx_pause;
        else if (!pause->rx_pause && !pause->tx_pause)
-               hw->mac.fc = e1000_fc_none;
+               hw->fc.type = e1000_fc_none;
 
-       hw->mac.original_fc = hw->mac.fc;
+       hw->fc.original_type = hw->fc.type;
 
        if (adapter->fc_autoneg == AUTONEG_ENABLE) {
-               hw->mac.fc = e1000_fc_default;
+               hw->fc.type = e1000_fc_default;
                if (netif_running(adapter->netdev)) {
                        e1000e_down(adapter);
                        e1000e_up(adapter);
@@ -321,7 +323,7 @@ static int e1000_set_pauseparam(struct net_device *netdev,
                        e1000e_reset(adapter);
                }
        } else {
-               retval = ((hw->media_type == e1000_media_type_fiber) ?
+               retval = ((hw->phy.media_type == e1000_media_type_fiber) ?
                          hw->mac.ops.setup_link(hw) : e1000e_force_mac_fc(hw));
        }
 
@@ -639,10 +641,17 @@ static int e1000_set_ringparam(struct net_device *netdev,
        tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
        if (!tx_ring)
                goto err_alloc_tx;
+       /*
+        * use a memcpy to save any previously configured
+        * items like napi structs from having to be
+        * reinitialized
+        */
+       memcpy(tx_ring, tx_old, sizeof(struct e1000_ring));
 
        rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
        if (!rx_ring)
                goto err_alloc_rx;
+       memcpy(rx_ring, rx_old, sizeof(struct e1000_ring));
 
        adapter->tx_ring = tx_ring;
        adapter->rx_ring = rx_ring;
@@ -698,61 +707,55 @@ err_setup:
        return err;
 }
 
-static bool reg_pattern_test_array(struct e1000_adapter *adapter, u64 *data,
-                                  int reg, int offset, u32 mask, u32 write)
+static bool reg_pattern_test(struct e1000_adapter *adapter, u64 *data,
+                            int reg, int offset, u32 mask, u32 write)
 {
-       int i;
-       u32 read;
+       u32 pat, val;
        static const u32 test[] =
                {0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF};
-       for (i = 0; i < ARRAY_SIZE(test); i++) {
+       for (pat = 0; pat < ARRAY_SIZE(test); pat++) {
                E1000_WRITE_REG_ARRAY(&adapter->hw, reg, offset,
-                                     (test[i] & write));
-               read = E1000_READ_REG_ARRAY(&adapter->hw, reg, offset);
-               if (read != (test[i] & write & mask)) {
+                                     (test[pat] & write));
+               val = E1000_READ_REG_ARRAY(&adapter->hw, reg, offset);
+               if (val != (test[pat] & write & mask)) {
                        ndev_err(adapter->netdev, "pattern test reg %04X "
                                 "failed: got 0x%08X expected 0x%08X\n",
                                 reg + offset,
-                                read, (test[i] & write & mask));
+                                val, (test[pat] & write & mask));
                        *data = reg;
-                       return true;
+                       return 1;
                }
        }
-       return false;
+       return 0;
 }
 
 static bool reg_set_and_check(struct e1000_adapter *adapter, u64 *data,
                              int reg, u32 mask, u32 write)
 {
-       u32 read;
+       u32 val;
        __ew32(&adapter->hw, reg, write & mask);
-       read = __er32(&adapter->hw, reg);
-       if ((write & mask) != (read & mask)) {
+       val = __er32(&adapter->hw, reg);
+       if ((write & mask) != (val & mask)) {
                ndev_err(adapter->netdev, "set/check reg %04X test failed: "
-                        "got 0x%08X expected 0x%08X\n", reg, (read & mask),
+                        "got 0x%08X expected 0x%08X\n", reg, (val & mask),
                         (write & mask));
                *data = reg;
-               return true;
+               return 1;
        }
-       return false;
+       return 0;
 }
-
-#define REG_PATTERN_TEST(R, M, W) \
-       do { \
-               if (reg_pattern_test_array(adapter, data, R, 0, M, W)) \
-                       return 1; \
+#define REG_PATTERN_TEST_ARRAY(reg, offset, mask, write)                       \
+       do {                                                                   \
+               if (reg_pattern_test(adapter, data, reg, offset, mask, write)) \
+                       return 1;                                              \
        } while (0)
+#define REG_PATTERN_TEST(reg, mask, write)                                     \
+       REG_PATTERN_TEST_ARRAY(reg, 0, mask, write)
 
-#define REG_PATTERN_TEST_ARRAY(R, offset, M, W) \
-       do { \
-               if (reg_pattern_test_array(adapter, data, R, offset, M, W)) \
-                       return 1; \
-       } while (0)
-
-#define REG_SET_AND_CHECK(R, M, W) \
-       do { \
-               if (reg_set_and_check(adapter, data, R, M, W)) \
-                       return 1; \
+#define REG_SET_AND_CHECK(reg, mask, write)                                    \
+       do {                                                                   \
+               if (reg_set_and_check(adapter, data, reg, mask, write))        \
+                       return 1;                                              \
        } while (0)
 
 static int e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
@@ -1036,7 +1039,6 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
        struct pci_dev *pdev = adapter->pdev;
        struct e1000_hw *hw = &adapter->hw;
        u32 rctl;
-       int size;
        int i;
        int ret_val;
 
@@ -1045,13 +1047,13 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
        if (!tx_ring->count)
                tx_ring->count = E1000_DEFAULT_TXD;
 
-       size = tx_ring->count * sizeof(struct e1000_buffer);
-       tx_ring->buffer_info = kmalloc(size, GFP_KERNEL);
-       if (!tx_ring->buffer_info) {
+       tx_ring->buffer_info = kcalloc(tx_ring->count,
+                                      sizeof(struct e1000_buffer),
+                                      GFP_KERNEL);
+       if (!(tx_ring->buffer_info)) {
                ret_val = 1;
                goto err_nomem;
        }
-       memset(tx_ring->buffer_info, 0, size);
 
        tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
        tx_ring->size = ALIGN(tx_ring->size, 4096);
@@ -1061,21 +1063,17 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
                ret_val = 2;
                goto err_nomem;
        }
-       memset(tx_ring->desc, 0, tx_ring->size);
        tx_ring->next_to_use = 0;
        tx_ring->next_to_clean = 0;
 
-       ew32(TDBAL,
-                       ((u64) tx_ring->dma & 0x00000000FFFFFFFF));
+       ew32(TDBAL, ((u64) tx_ring->dma & 0x00000000FFFFFFFF));
        ew32(TDBAH, ((u64) tx_ring->dma >> 32));
-       ew32(TDLEN,
-                       tx_ring->count * sizeof(struct e1000_tx_desc));
+       ew32(TDLEN, tx_ring->count * sizeof(struct e1000_tx_desc));
        ew32(TDH, 0);
        ew32(TDT, 0);
-       ew32(TCTL,
-                       E1000_TCTL_PSP | E1000_TCTL_EN |
-                       E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
-                       E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT);
+       ew32(TCTL, E1000_TCTL_PSP | E1000_TCTL_EN | E1000_TCTL_MULR |
+            E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
+            E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT);
 
        for (i = 0; i < tx_ring->count; i++) {
                struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
@@ -1097,12 +1095,11 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
                        ret_val = 4;
                        goto err_nomem;
                }
-               tx_desc->buffer_addr = cpu_to_le64(
-                                        tx_ring->buffer_info[i].dma);
+               tx_desc->buffer_addr = cpu_to_le64(tx_ring->buffer_info[i].dma);
                tx_desc->lower.data = cpu_to_le32(skb->len);
                tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
                                                   E1000_TXD_CMD_IFCS |
-                                                  E1000_TXD_CMD_RPS);
+                                                  E1000_TXD_CMD_RS);
                tx_desc->upper.data = 0;
        }
 
@@ -1111,13 +1108,13 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
        if (!rx_ring->count)
                rx_ring->count = E1000_DEFAULT_RXD;
 
-       size = rx_ring->count * sizeof(struct e1000_buffer);
-       rx_ring->buffer_info = kmalloc(size, GFP_KERNEL);
-       if (!rx_ring->buffer_info) {
+       rx_ring->buffer_info = kcalloc(rx_ring->count,
+                                      sizeof(struct e1000_buffer),
+                                      GFP_KERNEL);
+       if (!(rx_ring->buffer_info)) {
                ret_val = 5;
                goto err_nomem;
        }
-       memset(rx_ring->buffer_info, 0, size);
 
        rx_ring->size = rx_ring->count * sizeof(struct e1000_rx_desc);
        rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
@@ -1126,7 +1123,6 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
                ret_val = 6;
                goto err_nomem;
        }
-       memset(rx_ring->desc, 0, rx_ring->size);
        rx_ring->next_to_use = 0;
        rx_ring->next_to_clean = 0;
 
@@ -1138,6 +1134,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
        ew32(RDH, 0);
        ew32(RDT, 0);
        rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
+               E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_LPE |
+               E1000_RCTL_SBP | E1000_RCTL_SECRC |
                E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
                (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
        ew32(RCTL, rctl);
@@ -1187,21 +1185,22 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
        u32 ctrl_reg = 0;
        u32 stat_reg = 0;
 
-       adapter->hw.mac.autoneg = 0;
+       hw->mac.autoneg = 0;
 
-       if (adapter->hw.phy.type == e1000_phy_m88) {
+       if (hw->phy.type == e1000_phy_m88) {
                /* Auto-MDI/MDIX Off */
                e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
                /* reset to update Auto-MDI/MDIX */
                e1e_wphy(hw, PHY_CONTROL, 0x9140);
                /* autoneg off */
                e1e_wphy(hw, PHY_CONTROL, 0x8140);
-       } else if (adapter->hw.phy.type == e1000_phy_gg82563)
+       } else if (hw->phy.type == e1000_phy_gg82563)
                e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x1CC);
 
        ctrl_reg = er32(CTRL);
 
-       if (adapter->hw.phy.type == e1000_phy_ife) {
+       switch (hw->phy.type) {
+       case e1000_phy_ife:
                /* force 100, set loopback */
                e1e_wphy(hw, PHY_CONTROL, 0x6100);
 
@@ -1211,9 +1210,11 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
                             E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
                             E1000_CTRL_SPD_100 |/* Force Speed to 100 */
                             E1000_CTRL_FD);     /* Force Duplex to FULL */
-       } else {
+               break;
+       default:
                /* force 1000, set loopback */
                e1e_wphy(hw, PHY_CONTROL, 0x4140);
+               mdelay(250);
 
                /* Now set up the MAC to the same speed/duplex as the PHY. */
                ctrl_reg = er32(CTRL);
@@ -1222,10 +1223,14 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
                             E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
                             E1000_CTRL_SPD_1000 |/* Force Speed to 1000 */
                             E1000_CTRL_FD);     /* Force Duplex to FULL */
+
+               if ((adapter->hw.mac.type == e1000_ich8lan) ||
+                   (adapter->hw.mac.type == e1000_ich9lan))
+                       ctrl_reg |= E1000_CTRL_SLU;     /* Set Link Up */
        }
 
-       if (adapter->hw.media_type == e1000_media_type_copper &&
-          adapter->hw.phy.type == e1000_phy_m88) {
+       if (hw->phy.media_type == e1000_media_type_copper &&
+           hw->phy.type == e1000_phy_m88) {
                ctrl_reg |= E1000_CTRL_ILOS; /* Invert Loss of Signal */
        } else {
                /*
@@ -1243,7 +1248,7 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
         * Disable the receiver on the PHY so when a cable is plugged in, the
         * PHY does not begin to autoneg when a cable is reconnected to the NIC.
         */
-       if (adapter->hw.phy.type == e1000_phy_m88)
+       if (hw->phy.type == e1000_phy_m88)
                e1000_phy_disable_receiver(adapter);
 
        udelay(500);
@@ -1323,7 +1328,7 @@ static int e1000_set_es2lan_mac_loopback(struct e1000_adapter *adapter)
 #define KMRNCTRLSTA_OPMODE (0x1F << 16)
 #define KMRNCTRLSTA_OPMODE_1GB_FD_GMII 0x0582
        ew32(KMRNCTRLSTA,
-               (KMRNCTRLSTA_OPMODE | KMRNCTRLSTA_OPMODE_1GB_FD_GMII));
+            (KMRNCTRLSTA_OPMODE | KMRNCTRLSTA_OPMODE_1GB_FD_GMII));
 
        return 0;
 }
@@ -1333,8 +1338,8 @@ static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
        struct e1000_hw *hw = &adapter->hw;
        u32 rctl;
 
-       if (hw->media_type == e1000_media_type_fiber ||
-           hw->media_type == e1000_media_type_internal_serdes) {
+       if (hw->phy.media_type == e1000_media_type_fiber ||
+           hw->phy.media_type == e1000_media_type_internal_serdes) {
                switch (hw->mac.type) {
                case e1000_80003es2lan:
                        return e1000_set_es2lan_mac_loopback(adapter);
@@ -1349,7 +1354,7 @@ static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
                        ew32(RCTL, rctl);
                        return 0;
                }
-       } else if (hw->media_type == e1000_media_type_copper) {
+       } else if (hw->phy.media_type == e1000_media_type_copper) {
                return e1000_integrated_phy_loopback(adapter);
        }
 
@@ -1368,8 +1373,8 @@ static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
 
        switch (hw->mac.type) {
        case e1000_80003es2lan:
-               if (hw->media_type == e1000_media_type_fiber ||
-                   hw->media_type == e1000_media_type_internal_serdes) {
+               if (hw->phy.media_type == e1000_media_type_fiber ||
+                   hw->phy.media_type == e1000_media_type_internal_serdes) {
                        /* restore CTRL_EXT, stealing space from tx_fifo_head */
                        ew32(CTRL_EXT, adapter->tx_fifo_head);
                        adapter->tx_fifo_head = 0;
@@ -1377,8 +1382,8 @@ static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
                /* fall through */
        case e1000_82571:
        case e1000_82572:
-               if (hw->media_type == e1000_media_type_fiber ||
-                   hw->media_type == e1000_media_type_internal_serdes) {
+               if (hw->phy.media_type == e1000_media_type_fiber ||
+                   hw->phy.media_type == e1000_media_type_internal_serdes) {
 #define E1000_SERDES_LB_OFF 0x400
                        ew32(SCTL, E1000_SERDES_LB_OFF);
                        msleep(10);
@@ -1449,8 +1454,8 @@ static int e1000_run_loopback_test(struct e1000_adapter *adapter)
        l = 0;
        for (j = 0; j <= lc; j++) { /* loop count loop */
                for (i = 0; i < 64; i++) { /* send the packets */
-                       e1000_create_lbtest_frame(
-                               tx_ring->buffer_info[i].skb, 1024);
+                       e1000_create_lbtest_frame(tx_ring->buffer_info[k].skb,
+                                                 1024);
                        pci_dma_sync_single_for_device(pdev,
                                        tx_ring->buffer_info[k].dma,
                                        tx_ring->buffer_info[k].length,
@@ -1485,7 +1490,7 @@ static int e1000_run_loopback_test(struct e1000_adapter *adapter)
                        ret_val = 13; /* ret_val is the same as mis-compare */
                        break;
                }
-               if (jiffies >= (time + 2)) {
+               if (jiffies >= (time + 20)) {
                        ret_val = 14; /* error code for time out error */
                        break;
                }
@@ -1528,7 +1533,7 @@ static int e1000_link_test(struct e1000_adapter *adapter, u64 *data)
        struct e1000_hw *hw = &adapter->hw;
 
        *data = 0;
-       if (hw->media_type == e1000_media_type_internal_serdes) {
+       if (hw->phy.media_type == e1000_media_type_internal_serdes) {
                int i = 0;
                hw->mac.serdes_has_link = 0;
 
@@ -1624,9 +1629,9 @@ static void e1000_diag_test(struct net_device *netdev,
                adapter->hw.mac.autoneg = autoneg;
 
                /* force this routine to wait until autoneg complete/timeout */
-               adapter->hw.phy.wait_for_link = 1;
+               adapter->hw.phy.autoneg_wait_to_complete = 1;
                e1000e_reset(adapter);
-               adapter->hw.phy.wait_for_link = 0;
+               adapter->hw.phy.autoneg_wait_to_complete = 0;
 
                clear_bit(__E1000_TESTING, &adapter->state);
                if (if_running)
@@ -1765,6 +1770,47 @@ static int e1000_phys_id(struct net_device *netdev, u32 data)
        return 0;
 }
 
+static int e1000_get_coalesce(struct net_device *netdev,
+                             struct ethtool_coalesce *ec)
+{
+       struct e1000_adapter *adapter = netdev_priv(netdev);
+
+       if (adapter->itr_setting <= 3)
+               ec->rx_coalesce_usecs = adapter->itr_setting;
+       else
+               ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;
+
+       return 0;
+}
+
+static int e1000_set_coalesce(struct net_device *netdev,
+                             struct ethtool_coalesce *ec)
+{
+       struct e1000_adapter *adapter = netdev_priv(netdev);
+       struct e1000_hw *hw = &adapter->hw;
+
+       if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
+           ((ec->rx_coalesce_usecs > 3) &&
+            (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
+           (ec->rx_coalesce_usecs == 2))
+               return -EINVAL;
+
+       if (ec->rx_coalesce_usecs <= 3) {
+               adapter->itr = 20000;
+               adapter->itr_setting = ec->rx_coalesce_usecs;
+       } else {
+               adapter->itr = (1000000 / ec->rx_coalesce_usecs);
+               adapter->itr_setting = adapter->itr & ~3;
+       }
+
+       if (adapter->itr_setting != 0)
+               ew32(ITR, 1000000000 / (adapter->itr * 256));
+       else
+               ew32(ITR, 0);
+
+       return 0;
+}
+
 static int e1000_nway_reset(struct net_device *netdev)
 {
        struct e1000_adapter *adapter = netdev_priv(netdev);
@@ -1840,6 +1886,8 @@ static const struct ethtool_ops e1000_ethtool_ops = {
        .phys_id                = e1000_phys_id,
        .get_ethtool_stats      = e1000_get_ethtool_stats,
        .get_sset_count         = e1000e_get_sset_count,
+       .get_coalesce           = e1000_get_coalesce,
+       .set_coalesce           = e1000_set_coalesce,
 };
 
 void e1000e_set_ethtool_ops(struct net_device *netdev)