e1000e: add support for new 82574L part

This new part has the same feature set as previous parts with the addition
of MSI-X support.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 363 insertions, 46 deletions

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 2d9bcb02d093..0925204cd2d8 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -55,6 +55,7 @@ static const struct e1000_info *e1000_info_tbl[] = {
         [board_82571]           = &e1000_82571_info,
         [board_82572]           = &e1000_82572_info,
         [board_82573]           = &e1000_82573_info,
+        [board_82574]           = &e1000_82574_info,
         [board_80003es2lan]     = &e1000_es2_info,
         [board_ich8lan]         = &e1000_ich8_info,
         [board_ich9lan]         = &e1000_ich9_info,
@@ -1180,8 +1181,8 @@ static irqreturn_t e1000_intr(int irq, void *data)
         struct net_device *netdev = data;
         struct e1000_adapter *adapter = netdev_priv(netdev);
         struct e1000_hw *hw = &adapter->hw;
-
         u32 rctl, icr = er32(ICR);
+
         if (!icr)
                 return IRQ_NONE;  /* Not our interrupt */
 
@@ -1237,6 +1238,263 @@ static irqreturn_t e1000_intr(int irq, void *data)
         return IRQ_HANDLED;
 }
 
+static irqreturn_t e1000_msix_other(int irq, void *data)
+{
+        struct net_device *netdev = data;
+        struct e1000_adapter *adapter = netdev_priv(netdev);
+        struct e1000_hw *hw = &adapter->hw;
+        u32 icr = er32(ICR);
+
+        if (!(icr & E1000_ICR_INT_ASSERTED)) {
+                ew32(IMS, E1000_IMS_OTHER);
+                return IRQ_NONE;
+        }
+
+        if (icr & adapter->eiac_mask)
+                ew32(ICS, (icr & adapter->eiac_mask));
+
+        if (icr & E1000_ICR_OTHER) {
+                if (!(icr & E1000_ICR_LSC))
+                        goto no_link_interrupt;
+                hw->mac.get_link_status = 1;
+                /* guard against interrupt when we're going down */
+                if (!test_bit(__E1000_DOWN, &adapter->state))
+                        mod_timer(&adapter->watchdog_timer, jiffies + 1);
+        }
+
+no_link_interrupt:
+        ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
+
+        return IRQ_HANDLED;
+}
+
+
+static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
+{
+        struct net_device *netdev = data;
+        struct e1000_adapter *adapter = netdev_priv(netdev);
+        struct e1000_hw *hw = &adapter->hw;
+        struct e1000_ring *tx_ring = adapter->tx_ring;
+
+
+        adapter->total_tx_bytes = 0;
+        adapter->total_tx_packets = 0;
+
+        if (!e1000_clean_tx_irq(adapter))
+                /* Ring was not completely cleaned, so fire another interrupt */
+                ew32(ICS, tx_ring->ims_val);
+
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
+{
+        struct net_device *netdev = data;
+        struct e1000_adapter *adapter = netdev_priv(netdev);
+
+        /* Write the ITR value calculated at the end of the
+         * previous interrupt.
+         */
+        if (adapter->rx_ring->set_itr) {
+                writel(1000000000 / (adapter->rx_ring->itr_val * 256),
+                       adapter->hw.hw_addr + adapter->rx_ring->itr_register);
+                adapter->rx_ring->set_itr = 0;
+        }
+
+        if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
+                adapter->total_rx_bytes = 0;
+                adapter->total_rx_packets = 0;
+                __netif_rx_schedule(netdev, &adapter->napi);
+        }
+        return IRQ_HANDLED;
+}
+
+/**
+ * e1000_configure_msix - Configure MSI-X hardware
+ *
+ * e1000_configure_msix sets up the hardware to properly
+ * generate MSI-X interrupts.
+ **/
+static void e1000_configure_msix(struct e1000_adapter *adapter)
+{
+        struct e1000_hw *hw = &adapter->hw;
+        struct e1000_ring *rx_ring = adapter->rx_ring;
+        struct e1000_ring *tx_ring = adapter->tx_ring;
+        int vector = 0;
+        u32 ctrl_ext, ivar = 0;
+
+        adapter->eiac_mask = 0;
+
+        /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
+        if (hw->mac.type == e1000_82574) {
+                u32 rfctl = er32(RFCTL);
+                rfctl |= E1000_RFCTL_ACK_DIS;
+                ew32(RFCTL, rfctl);
+        }
+
+#define E1000_IVAR_INT_ALLOC_VALID      0x8
+        /* Configure Rx vector */
+        rx_ring->ims_val = E1000_IMS_RXQ0;
+        adapter->eiac_mask |= rx_ring->ims_val;
+        if (rx_ring->itr_val)
+                writel(1000000000 / (rx_ring->itr_val * 256),
+                       hw->hw_addr + rx_ring->itr_register);
+        else
+                writel(1, hw->hw_addr + rx_ring->itr_register);
+        ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
+
+        /* Configure Tx vector */
+        tx_ring->ims_val = E1000_IMS_TXQ0;
+        vector++;
+        if (tx_ring->itr_val)
+                writel(1000000000 / (tx_ring->itr_val * 256),
+                       hw->hw_addr + tx_ring->itr_register);
+        else
+                writel(1, hw->hw_addr + tx_ring->itr_register);
+        adapter->eiac_mask |= tx_ring->ims_val;
+        ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
+
+        /* set vector for Other Causes, e.g. link changes */
+        vector++;
+        ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
+        if (rx_ring->itr_val)
+                writel(1000000000 / (rx_ring->itr_val * 256),
+                       hw->hw_addr + E1000_EITR_82574(vector));
+        else
+                writel(1, hw->hw_addr + E1000_EITR_82574(vector));
+
+        /* Cause Tx interrupts on every write back */
+        ivar |= (1 << 31);
+
+        ew32(IVAR, ivar);
+
+        /* enable MSI-X PBA support */
+        ctrl_ext = er32(CTRL_EXT);
+        ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
+
+        /* Auto-Mask Other interrupts upon ICR read */
+#define E1000_EIAC_MASK_82574   0x01F00000
+        ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
+        ctrl_ext |= E1000_CTRL_EXT_EIAME;
+        ew32(CTRL_EXT, ctrl_ext);
+        e1e_flush();
+}
+
+void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
+{
+        if (adapter->msix_entries) {
+                pci_disable_msix(adapter->pdev);
+                kfree(adapter->msix_entries);
+                adapter->msix_entries = NULL;
+        } else if (adapter->flags & FLAG_MSI_ENABLED) {
+                pci_disable_msi(adapter->pdev);
+                adapter->flags &= ~FLAG_MSI_ENABLED;
+        }
+
+        return;
+}
+
+/**
+ * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
+{
+        int err;
+        int numvecs, i;
+
+
+        switch (adapter->int_mode) {
+        case E1000E_INT_MODE_MSIX:
+                if (adapter->flags & FLAG_HAS_MSIX) {
+                        numvecs = 3; /* RxQ0, TxQ0 and other */
+                        adapter->msix_entries = kcalloc(numvecs,
+                                                      sizeof(struct msix_entry),
+                                                      GFP_KERNEL);
+                        if (adapter->msix_entries) {
+                                for (i = 0; i < numvecs; i++)
+                                        adapter->msix_entries[i].entry = i;
+
+                                err = pci_enable_msix(adapter->pdev,
+                                                      adapter->msix_entries,
+                                                      numvecs);
+                                if (err == 0)
+                                        return;
+                        }
+                        /* MSI-X failed, so fall through and try MSI */
+                        e_err("Failed to initialize MSI-X interrupts.  "
+                              "Falling back to MSI interrupts.\n");
+                        e1000e_reset_interrupt_capability(adapter);
+                }
+                adapter->int_mode = E1000E_INT_MODE_MSI;
+                /* Fall through */
+        case E1000E_INT_MODE_MSI:
+                if (!pci_enable_msi(adapter->pdev)) {
+                        adapter->flags |= FLAG_MSI_ENABLED;
+                } else {
+                        adapter->int_mode = E1000E_INT_MODE_LEGACY;
+                        e_err("Failed to initialize MSI interrupts.  Falling "
+                              "back to legacy interrupts.\n");
+                }
+                /* Fall through */
+        case E1000E_INT_MODE_LEGACY:
+                /* Don't do anything; this is the system default */
+                break;
+        }
+
+        return;
+}
+
+/**
+ * e1000_request_msix - Initialize MSI-X interrupts
+ *
+ * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
+ * kernel.
+ **/
+static int e1000_request_msix(struct e1000_adapter *adapter)
+{
+        struct net_device *netdev = adapter->netdev;
+        int err = 0, vector = 0;
+
+        if (strlen(netdev->name) < (IFNAMSIZ - 5))
+                sprintf(adapter->rx_ring->name, "%s-rx0", netdev->name);
+        else
+                memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
+        err = request_irq(adapter->msix_entries[vector].vector,
+                          &e1000_intr_msix_rx, 0, adapter->rx_ring->name,
+                          netdev);
+        if (err)
+                goto out;
+        adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
+        adapter->rx_ring->itr_val = adapter->itr;
+        vector++;
+
+        if (strlen(netdev->name) < (IFNAMSIZ - 5))
+                sprintf(adapter->tx_ring->name, "%s-tx0", netdev->name);
+        else
+                memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
+        err = request_irq(adapter->msix_entries[vector].vector,
+                          &e1000_intr_msix_tx, 0, adapter->tx_ring->name,
+                          netdev);
+        if (err)
+                goto out;
+        adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
+        adapter->tx_ring->itr_val = adapter->itr;
+        vector++;
+
+        err = request_irq(adapter->msix_entries[vector].vector,
+                          &e1000_msix_other, 0, netdev->name, netdev);
+        if (err)
+                goto out;
+
+        e1000_configure_msix(adapter);
+        return 0;
+out:
+        return err;
+}
+
 /**
  * e1000_request_irq - initialize interrupts
  *
@@ -1246,29 +1504,33 @@ static irqreturn_t e1000_intr(int irq, void *data)
 static int e1000_request_irq(struct e1000_adapter *adapter)
 {
         struct net_device *netdev = adapter->netdev;
-        int irq_flags = IRQF_SHARED;
         int err;
 
-        if (!(adapter->flags & FLAG_MSI_TEST_FAILED)) {
-                err = pci_enable_msi(adapter->pdev);
-                if (!err) {
-                        adapter->flags |= FLAG_MSI_ENABLED;
-                        irq_flags = 0;
-                }
+        if (adapter->msix_entries) {
+                err = e1000_request_msix(adapter);
+                if (!err)
+                        return err;
+                /* fall back to MSI */
+                e1000e_reset_interrupt_capability(adapter);
+                adapter->int_mode = E1000E_INT_MODE_MSI;
+                e1000e_set_interrupt_capability(adapter);
         }
+        if (adapter->flags & FLAG_MSI_ENABLED) {
+                err = request_irq(adapter->pdev->irq, &e1000_intr_msi, 0,
+                                  netdev->name, netdev);
+                if (!err)
+                        return err;
 
-        err = request_irq(adapter->pdev->irq,
-                          ((adapter->flags & FLAG_MSI_ENABLED) ?
-                                &e1000_intr_msi : &e1000_intr),
-                          irq_flags, netdev->name, netdev);
-        if (err) {
-                if (adapter->flags & FLAG_MSI_ENABLED) {
-                        pci_disable_msi(adapter->pdev);
-                        adapter->flags &= ~FLAG_MSI_ENABLED;
-                }
-                e_err("Unable to allocate interrupt, Error: %d\n", err);
+                /* fall back to legacy interrupt */
+                e1000e_reset_interrupt_capability(adapter);
+                adapter->int_mode = E1000E_INT_MODE_LEGACY;
         }
 
+        err = request_irq(adapter->pdev->irq, &e1000_intr, IRQF_SHARED,
+                          netdev->name, netdev);
+        if (err)
+                e_err("Unable to allocate interrupt, Error: %d\n", err);
+
         return err;
 }
 
@@ -1276,11 +1538,21 @@ static void e1000_free_irq(struct e1000_adapter *adapter)
 {
         struct net_device *netdev = adapter->netdev;
 
-        free_irq(adapter->pdev->irq, netdev);
-        if (adapter->flags & FLAG_MSI_ENABLED) {
-                pci_disable_msi(adapter->pdev);
-                adapter->flags &= ~FLAG_MSI_ENABLED;
+        if (adapter->msix_entries) {
+                int vector = 0;
+
+                free_irq(adapter->msix_entries[vector].vector, netdev);
+                vector++;
+
+                free_irq(adapter->msix_entries[vector].vector, netdev);
+                vector++;
+
+                /* Other Causes interrupt vector */
+                free_irq(adapter->msix_entries[vector].vector, netdev);
+                return;
         }
+
+        free_irq(adapter->pdev->irq, netdev);
 }
 
 /**
@@ -1291,6 +1563,8 @@ static void e1000_irq_disable(struct e1000_adapter *adapter)
         struct e1000_hw *hw = &adapter->hw;
 
         ew32(IMC, ~0);
+        if (adapter->msix_entries)
+                ew32(EIAC_82574, 0);
         e1e_flush();
         synchronize_irq(adapter->pdev->irq);
 }
@@ -1302,7 +1576,12 @@ static void e1000_irq_enable(struct e1000_adapter *adapter)
 {
         struct e1000_hw *hw = &adapter->hw;
 
-        ew32(IMS, IMS_ENABLE_MASK);
+        if (adapter->msix_entries) {
+                ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
+                ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
+        } else {
+                ew32(IMS, IMS_ENABLE_MASK);
+        }
         e1e_flush();
 }
 
@@ -1552,9 +1831,8 @@ void e1000e_free_rx_resources(struct e1000_adapter *adapter)
  *      traffic pattern.  Constants in this function were computed
  *      based on theoretical maximum wire speed and thresholds were set based
  *      on testing data as well as attempting to minimize response time
- *      while increasing bulk throughput.
- *      this functionality is controlled by the InterruptThrottleRate module
- *      parameter (see e1000_param.c)
+ *      while increasing bulk throughput.  This functionality is controlled
+ *      by the InterruptThrottleRate module parameter.
  **/
 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
                                      u16 itr_setting, int packets,
@@ -1662,11 +1940,37 @@ set_itr_now:
                              min(adapter->itr + (new_itr >> 2), new_itr) :
                              new_itr;
                 adapter->itr = new_itr;
-                ew32(ITR, 1000000000 / (new_itr * 256));
+                adapter->rx_ring->itr_val = new_itr;
+                if (adapter->msix_entries)
+                        adapter->rx_ring->set_itr = 1;
+                else
+                        ew32(ITR, 1000000000 / (new_itr * 256));
         }
 }
 
 /**
+ * e1000_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ **/
+static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
+{
+        adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
+        if (!adapter->tx_ring)
+                goto err;
+
+        adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
+        if (!adapter->rx_ring)
+                goto err;
+
+        return 0;
+err:
+        e_err("Unable to allocate memory for queues\n");
+        kfree(adapter->rx_ring);
+        kfree(adapter->tx_ring);
+        return -ENOMEM;
+}
+
+/**
  * e1000_clean - NAPI Rx polling callback
  * @napi: struct associated with this polling callback
  * @budget: amount of packets driver is allowed to process this poll
@@ -1674,12 +1978,17 @@ set_itr_now:
 static int e1000_clean(struct napi_struct *napi, int budget)
 {
         struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
+        struct e1000_hw *hw = &adapter->hw;
         struct net_device *poll_dev = adapter->netdev;
         int tx_cleaned = 0, work_done = 0;
 
         /* Must NOT use netdev_priv macro here. */
         adapter = poll_dev->priv;
 
+        if (adapter->msix_entries &&
+            !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
+                goto clean_rx;
+
         /*
          * e1000_clean is called per-cpu.  This lock protects
          * tx_ring from being cleaned by multiple cpus
@@ -1691,6 +2000,7 @@ static int e1000_clean(struct napi_struct *napi, int budget)
                 spin_unlock(&adapter->tx_queue_lock);
         }
 
+clean_rx:
         adapter->clean_rx(adapter, &work_done, budget);
 
         if (tx_cleaned)
@@ -1701,7 +2011,10 @@ static int e1000_clean(struct napi_struct *napi, int budget)
                 if (adapter->itr_setting & 3)
                         e1000_set_itr(adapter);
                 netif_rx_complete(poll_dev, napi);
-                e1000_irq_enable(adapter);
+                if (adapter->msix_entries)
+                        ew32(IMS, adapter->rx_ring->ims_val);
+                else
+                        e1000_irq_enable(adapter);
         }
 
         return work_done;
@@ -2497,6 +2810,8 @@ int e1000e_up(struct e1000_adapter *adapter)
         clear_bit(__E1000_DOWN, &adapter->state);
 
         napi_enable(&adapter->napi);
+        if (adapter->msix_entries)
+                e1000_configure_msix(adapter);
         e1000_irq_enable(adapter);
 
         /* fire a link change interrupt to start the watchdog */
@@ -2580,13 +2895,10 @@ static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
         adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
         adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
 
-        adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
-        if (!adapter->tx_ring)
-                goto err;
+        e1000e_set_interrupt_capability(adapter);
 
-        adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
-        if (!adapter->rx_ring)
-                goto err;
+        if (e1000_alloc_queues(adapter))
+                return -ENOMEM;
 
         spin_lock_init(&adapter->tx_queue_lock);
 
@@ -2597,12 +2909,6 @@ static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
 
         set_bit(__E1000_DOWN, &adapter->state);
         return 0;
-
-err:
-        e_err("Unable to allocate memory for queues\n");
-        kfree(adapter->rx_ring);
-        kfree(adapter->tx_ring);
-        return -ENOMEM;
 }
 
 /**
@@ -2644,6 +2950,7 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
 
         /* free the real vector and request a test handler */
         e1000_free_irq(adapter);
+        e1000e_reset_interrupt_capability(adapter);
 
         /* Assume that the test fails, if it succeeds then the test
          * MSI irq handler will unset this flag */
@@ -2674,6 +2981,7 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
         rmb();
 
         if (adapter->flags & FLAG_MSI_TEST_FAILED) {
+                adapter->int_mode = E1000E_INT_MODE_LEGACY;
                 err = -EIO;
                 e_info("MSI interrupt test failed!\n");
         }
@@ -2687,7 +2995,7 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
         /* okay so the test worked, restore settings */
         e_dbg("%s: MSI interrupt test succeeded!\n", netdev->name);
 msi_test_failed:
-        /* restore the original vector, even if it failed */
+        e1000e_set_interrupt_capability(adapter);
         e1000_request_irq(adapter);
         return err;
 }
@@ -2797,7 +3105,7 @@ static int e1000_open(struct net_device *netdev)
          * ignore e1000e MSI messages, which means we need to test our MSI
          * interrupt now
          */
-        {
+        if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
                 err = e1000_test_msi(adapter);
                 if (err) {
                         e_err("Interrupt allocation failed\n");
@@ -2989,7 +3297,8 @@ void e1000e_update_stats(struct e1000_adapter *adapter)
 
         adapter->stats.algnerrc += er32(ALGNERRC);
         adapter->stats.rxerrc += er32(RXERRC);
-        adapter->stats.tncrs += er32(TNCRS);
+        if (hw->mac.type != e1000_82574)
+                adapter->stats.tncrs += er32(TNCRS);
         adapter->stats.cexterr += er32(CEXTERR);
         adapter->stats.tsctc += er32(TSCTC);
         adapter->stats.tsctfc += er32(TSCTFC);
@@ -3337,7 +3646,10 @@ link_up:
         }
 
         /* Cause software interrupt to ensure Rx ring is cleaned */
-        ew32(ICS, E1000_ICS_RXDMT0);
+        if (adapter->msix_entries)
+                ew32(ICS, adapter->rx_ring->ims_val);
+        else
+                ew32(ICS, E1000_ICS_RXDMT0);
 
         /* Force detection of hung controller every watchdog period */
         adapter->detect_tx_hung = 1;
@@ -4054,6 +4366,7 @@ static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
                 e1000e_down(adapter);
                 e1000_free_irq(adapter);
         }
+        e1000e_reset_interrupt_capability(adapter);
 
         retval = pci_save_state(pdev);
         if (retval)
@@ -4180,6 +4493,7 @@ static int e1000_resume(struct pci_dev *pdev)
         pci_enable_wake(pdev, PCI_D3hot, 0);
         pci_enable_wake(pdev, PCI_D3cold, 0);
 
+        e1000e_set_interrupt_capability(adapter);
         if (netif_running(netdev)) {
                 err = e1000_request_irq(adapter);
                 if (err)
@@ -4489,6 +4803,8 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
 
         adapter->bd_number = cards_found++;
 
+        e1000e_check_options(adapter);
+
         /* setup adapter struct */
         err = e1000_sw_init(adapter);
         if (err)
@@ -4595,8 +4911,6 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
         INIT_WORK(&adapter->reset_task, e1000_reset_task);
         INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
 
-        e1000e_check_options(adapter);
-
         /* Initialize link parameters. User can change them with ethtool */
         adapter->hw.mac.autoneg = 1;
         adapter->fc_autoneg = 1;
@@ -4726,6 +5040,7 @@ static void __devexit e1000_remove(struct pci_dev *pdev)
         if (!e1000_check_reset_block(&adapter->hw))
                 e1000_phy_hw_reset(&adapter->hw);
 
+        e1000e_reset_interrupt_capability(adapter);
         kfree(adapter->tx_ring);
         kfree(adapter->rx_ring);
 
@@ -4767,6 +5082,8 @@ static struct pci_device_id e1000_pci_tbl[] = {
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
 
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
+
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
           board_80003es2lan },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),