igb: add 82576 MAC support

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 135 insertions, 35 deletions

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 14363260612c..ba043c4e1ca2 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -51,7 +51,7 @@ char igb_driver_name[] = "igb";
 char igb_driver_version[] = DRV_VERSION;
 static const char igb_driver_string[] =
                                 "Intel(R) Gigabit Ethernet Network Driver";
-static const char igb_copyright[] = "Copyright (c) 2007 Intel Corporation.";
+static const char igb_copyright[] = "Copyright (c) 2008 Intel Corporation.";
 
 
 static const struct e1000_info *igb_info_tbl[] = {
@@ -59,6 +59,10 @@ static const struct e1000_info *igb_info_tbl[] = {
 };
 
 static struct pci_device_id igb_pci_tbl[] = {
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 },
@@ -268,6 +272,10 @@ static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue,
 {
         u32 msixbm = 0;
         struct e1000_hw *hw = &adapter->hw;
+        u32 ivar, index;
+
+        switch (hw->mac.type) {
+        case e1000_82575:
                 /* The 82575 assigns vectors using a bitmask, which matches the
                    bitmask for the EICR/EIMS/EIMC registers.  To assign one
                    or more queues to a vector, we write the appropriate bits
@@ -282,6 +290,47 @@ static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue,
                                   E1000_EICR_TX_QUEUE0 << tx_queue;
                 }
                 array_wr32(E1000_MSIXBM(0), msix_vector, msixbm);
+                break;
+        case e1000_82576:
+                /* Kawela uses a table-based method for assigning vectors.
+                   Each queue has a single entry in the table to which we write
+                   a vector number along with a "valid" bit.  Sadly, the layout
+                   of the table is somewhat counterintuitive. */
+                if (rx_queue > IGB_N0_QUEUE) {
+                        index = (rx_queue & 0x7);
+                        ivar = array_rd32(E1000_IVAR0, index);
+                        if (rx_queue < 8) {
+                                /* vector goes into low byte of register */
+                                ivar = ivar & 0xFFFFFF00;
+                                ivar |= msix_vector | E1000_IVAR_VALID;
+                        } else {
+                                /* vector goes into third byte of register */
+                                ivar = ivar & 0xFF00FFFF;
+                                ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
+                        }
+                        adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector;
+                        array_wr32(E1000_IVAR0, index, ivar);
+                }
+                if (tx_queue > IGB_N0_QUEUE) {
+                        index = (tx_queue & 0x7);
+                        ivar = array_rd32(E1000_IVAR0, index);
+                        if (tx_queue < 8) {
+                                /* vector goes into second byte of register */
+                                ivar = ivar & 0xFFFF00FF;
+                                ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
+                        } else {
+                                /* vector goes into high byte of register */
+                                ivar = ivar & 0x00FFFFFF;
+                                ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
+                        }
+                        adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector;
+                        array_wr32(E1000_IVAR0, index, ivar);
+                }
+                break;
+        default:
+                BUG();
+                break;
+        }
 }
 
 /**
@@ -297,6 +346,12 @@ static void igb_configure_msix(struct igb_adapter *adapter)
         struct e1000_hw *hw = &adapter->hw;
 
         adapter->eims_enable_mask = 0;
+        if (hw->mac.type == e1000_82576)
+                /* Turn on MSI-X capability first, or our settings
+                 * won't stick.  And it will take days to debug. */
+                wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE |
+                                   E1000_GPIE_PBA | E1000_GPIE_EIAME | 
+                                   E1000_GPIE_NSICR);
 
         for (i = 0; i < adapter->num_tx_queues; i++) {
                 struct igb_ring *tx_ring = &adapter->tx_ring[i];
@@ -322,6 +377,8 @@ static void igb_configure_msix(struct igb_adapter *adapter)
 
 
         /* set vector for other causes, i.e. link changes */
+        switch (hw->mac.type) {
+        case e1000_82575:
                 array_wr32(E1000_MSIXBM(0), vector++,
                                       E1000_EIMS_OTHER);
 
@@ -337,6 +394,19 @@ static void igb_configure_msix(struct igb_adapter *adapter)
                 adapter->eims_enable_mask |= E1000_EIMS_OTHER;
                 adapter->eims_other = E1000_EIMS_OTHER;
 
+                break;
+
+        case e1000_82576:
+                tmp = (vector++ | E1000_IVAR_VALID) << 8;
+                wr32(E1000_IVAR_MISC, tmp);
+
+                adapter->eims_enable_mask = (1 << (vector)) - 1;
+                adapter->eims_other = 1 << (vector - 1);
+                break;
+        default:
+                /* do nothing, since nothing else supports MSI-X */
+                break;
+        } /* switch (hw->mac.type) */
         wrfl();
 }
 
@@ -474,8 +544,17 @@ static int igb_request_irq(struct igb_adapter *adapter)
                 adapter->num_rx_queues = 1;
                 igb_alloc_queues(adapter);
         } else {
-                wr32(E1000_MSIXBM(0), (E1000_EICR_RX_QUEUE0 |
-                                       E1000_EIMS_OTHER));
+                switch (hw->mac.type) {
+                case e1000_82575:
+                        wr32(E1000_MSIXBM(0),
+                             (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER));
+                        break;
+                case e1000_82576:
+                        wr32(E1000_IVAR0, E1000_IVAR_VALID);
+                        break;
+                default:
+                        break;
+                }
         }
 
         if (adapter->msi_enabled) {
@@ -770,16 +849,23 @@ void igb_reinit_locked(struct igb_adapter *adapter)
 void igb_reset(struct igb_adapter *adapter)
 {
         struct e1000_hw *hw = &adapter->hw;
-        struct e1000_fc_info *fc = &adapter->hw.fc;
+        struct e1000_mac_info *mac = &hw->mac;
+        struct e1000_fc_info *fc = &hw->fc;
         u32 pba = 0, tx_space, min_tx_space, min_rx_space;
         u16 hwm;
 
         /* Repartition Pba for greater than 9k mtu
          * To take effect CTRL.RST is required.
          */
+        if (mac->type != e1000_82576) {
         pba = E1000_PBA_34K;
+        }
+        else {
+                pba = E1000_PBA_64K;
+        }
 
-        if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
+        if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) &&
+            (mac->type < e1000_82576)) {
                 /* adjust PBA for jumbo frames */
                 wr32(E1000_PBA, pba);
 
@@ -818,8 +904,8 @@ void igb_reset(struct igb_adapter *adapter)
                         if (pba < min_rx_space)
                                 pba = min_rx_space;
                 }
+                wr32(E1000_PBA, pba);
         }
-        wr32(E1000_PBA, pba);
 
         /* flow control settings */
         /* The high water mark must be low enough to fit one full frame
@@ -828,10 +914,15 @@ void igb_reset(struct igb_adapter *adapter)
          * - 90% of the Rx FIFO size, or
          * - the full Rx FIFO size minus one full frame */
         hwm = min(((pba << 10) * 9 / 10),
-                  ((pba << 10) - adapter->max_frame_size));
+                        ((pba << 10) - 2 * adapter->max_frame_size));
 
-        fc->high_water = hwm & 0xFFF8;  /* 8-byte granularity */
-        fc->low_water = fc->high_water - 8;
+        if (mac->type < e1000_82576) {
+                fc->high_water = hwm & 0xFFF8;  /* 8-byte granularity */
+                fc->low_water = fc->high_water - 8;
+        } else {
+                fc->high_water = hwm & 0xFFF0;  /* 16-byte granularity */
+                fc->low_water = fc->high_water - 16;
+        }
         fc->pause_time = 0xFFFF;
         fc->send_xon = 1;
         fc->type = fc->original_type;
@@ -1118,9 +1209,12 @@ static int __devinit igb_probe(struct pci_dev *pdev,
          * lan on a particular port */
         switch (pdev->device) {
         case E1000_DEV_ID_82575GB_QUAD_COPPER:
+        case E1000_DEV_ID_82576_QUAD_COPPER:
                 adapter->eeprom_wol = 0;
                 break;
         case E1000_DEV_ID_82575EB_FIBER_SERDES:
+        case E1000_DEV_ID_82576_FIBER:
+        case E1000_DEV_ID_82576_SERDES:
                 /* Wake events only supported on port A for dual fiber
                  * regardless of eeprom setting */
                 if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
@@ -1801,7 +1895,10 @@ static void igb_configure_rx(struct igb_adapter *adapter)
 
                 get_random_bytes(&random[0], 40);
 
-                shift = 6;
+                if (hw->mac.type >= e1000_82576)
+                        shift = 0;
+                else
+                        shift = 6;
                 for (j = 0; j < (32 * 4); j++) {
                         reta.bytes[j & 3] =
                                 (j % adapter->num_rx_queues) << shift;
@@ -2127,7 +2224,7 @@ static void igb_set_multi(struct net_device *netdev)
 
         if (!netdev->mc_count) {
                 /* nothing to program, so clear mc list */
-                igb_update_mc_addr_list(hw, NULL, 0, 1,
+                igb_update_mc_addr_list_82575(hw, NULL, 0, 1,
                                           mac->rar_entry_count);
                 return;
         }
@@ -2145,7 +2242,8 @@ static void igb_set_multi(struct net_device *netdev)
                 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN);
                 mc_ptr = mc_ptr->next;
         }
-        igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count);
+        igb_update_mc_addr_list_82575(hw, mta_list, i, 1,
+                                      mac->rar_entry_count);
         kfree(mta_list);
 }
 
@@ -3211,8 +3309,14 @@ static void igb_update_rx_dca(struct igb_ring *rx_ring)
 
         if (rx_ring->cpu != cpu) {
                 dca_rxctrl = rd32(E1000_DCA_RXCTRL(q));
-                dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK;
-                dca_rxctrl |= dca_get_tag(cpu);
+                if (hw->mac.type == e1000_82576) {
+                        dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576;
+                        dca_rxctrl |= dca_get_tag(cpu) <<
+                                      E1000_DCA_RXCTRL_CPUID_SHIFT;
+                } else {
+                        dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK;
+                        dca_rxctrl |= dca_get_tag(cpu);
+                }
                 dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN;
                 dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN;
                 dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN;
@@ -3232,8 +3336,14 @@ static void igb_update_tx_dca(struct igb_ring *tx_ring)
 
         if (tx_ring->cpu != cpu) {
                 dca_txctrl = rd32(E1000_DCA_TXCTRL(q));
-                dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK;
-                dca_txctrl |= dca_get_tag(cpu);
+                if (hw->mac.type == e1000_82576) {
+                        dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576;
+                        dca_txctrl |= dca_get_tag(cpu) <<
+                                      E1000_DCA_TXCTRL_CPUID_SHIFT;
+                } else {
+                        dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK;
+                        dca_txctrl |= dca_get_tag(cpu);
+                }
                 dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN;
                 wr32(E1000_DCA_TXCTRL(q), dca_txctrl);
                 tx_ring->cpu = cpu;
@@ -3572,7 +3682,7 @@ done_cleaning:
                         /* detected Tx unit hang */
                         dev_err(&adapter->pdev->dev,
                                 "Detected Tx Unit Hang\n"
-                                "  Tx Queue             <%lu>\n"
+                                "  Tx Queue             <%d>\n"
                                 "  TDH                  <%x>\n"
                                 "  TDT                  <%x>\n"
                                 "  next_to_use          <%x>\n"
@@ -3582,8 +3692,7 @@ done_cleaning:
                                 "  time_stamp           <%lx>\n"
                                 "  jiffies              <%lx>\n"
                                 "  desc.status          <%x>\n",
-                                (unsigned long)((tx_ring - adapter->tx_ring) /
-                                        sizeof(struct igb_ring)),
+                                tx_ring->queue_index,
                                 readl(adapter->hw.hw_addr + tx_ring->head),
                                 readl(adapter->hw.hw_addr + tx_ring->tail),
                                 tx_ring->next_to_use,
@@ -4098,7 +4207,7 @@ static int igb_suspend(struct pci_dev *pdev, pm_message_t state)
         struct net_device *netdev = pci_get_drvdata(pdev);
         struct igb_adapter *adapter = netdev_priv(netdev);
         struct e1000_hw *hw = &adapter->hw;
-        u32 ctrl, ctrl_ext, rctl, status;
+        u32 ctrl, rctl, status;
         u32 wufc = adapter->wol;
 #ifdef CONFIG_PM
         int retval = 0;
@@ -4141,33 +4250,24 @@ static int igb_suspend(struct pci_dev *pdev, pm_message_t state)
                 ctrl |= E1000_CTRL_ADVD3WUC;
                 wr32(E1000_CTRL, ctrl);
 
-                if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
-                   adapter->hw.phy.media_type ==
-                                        e1000_media_type_internal_serdes) {
-                        /* keep the laser running in D3 */
-                        ctrl_ext = rd32(E1000_CTRL_EXT);
-                        ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
-                        wr32(E1000_CTRL_EXT, ctrl_ext);
-                }
-
                 /* Allow time for pending master requests to run */
                 igb_disable_pcie_master(&adapter->hw);
 
                 wr32(E1000_WUC, E1000_WUC_PME_EN);
                 wr32(E1000_WUFC, wufc);
-                pci_enable_wake(pdev, PCI_D3hot, 1);
-                pci_enable_wake(pdev, PCI_D3cold, 1);
         } else {
                 wr32(E1000_WUC, 0);
                 wr32(E1000_WUFC, 0);
-                pci_enable_wake(pdev, PCI_D3hot, 0);
-                pci_enable_wake(pdev, PCI_D3cold, 0);
         }
 
-        /* make sure adapter isn't asleep if manageability is enabled */
-        if (adapter->en_mng_pt) {
+        /* make sure adapter isn't asleep if manageability/wol is enabled */
+        if (wufc || adapter->en_mng_pt) {
                 pci_enable_wake(pdev, PCI_D3hot, 1);
                 pci_enable_wake(pdev, PCI_D3cold, 1);
+        } else {
+                igb_shutdown_fiber_serdes_link_82575(hw);
+                pci_enable_wake(pdev, PCI_D3hot, 0);
+                pci_enable_wake(pdev, PCI_D3cold, 0);
         }
 
         /* Release control of h/w to f/w.  If f/w is AMT enabled, this