igb: Add full support for 82580 devices

This patch makes use of the 82580 PHY and MAC support added and adds a set
of supported device IDs for said hardware.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 128 insertions, 3 deletions

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 958305e92d67..bb1a6eeade06 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -49,7 +49,7 @@
 #endif
 #include "igb.h"
 
-#define DRV_VERSION "1.3.16-k2"
+#define DRV_VERSION "2.1.0-k2"
 char igb_driver_name[] = "igb";
 char igb_driver_version[] = DRV_VERSION;
 static const char igb_driver_string[] =
@@ -61,6 +61,11 @@ static const struct e1000_info *igb_info_tbl[] = {
 };
 
 static struct pci_device_id igb_pci_tbl[] = {
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII), board_82575 },
+        { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL), board_82575 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 },
         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 },
@@ -195,6 +200,16 @@ static cycle_t igb_read_clock(const struct cyclecounter *tc)
         u64 stamp = 0;
         int shift = 0;
 
+        /*
+         * The timestamp latches on lowest register read. For the 82580
+         * the lowest register is SYSTIMR instead of SYSTIML.  However we never
+         * adjusted TIMINCA so SYSTIMR will just read as all 0s so ignore it.
+         */
+        if (hw->mac.type == e1000_82580) {
+                stamp = rd32(E1000_SYSTIMR) >> 8;
+                shift = IGB_82580_TSYNC_SHIFT;
+        }
+
         stamp |= (u64)rd32(E1000_SYSTIML) << shift;
         stamp |= (u64)rd32(E1000_SYSTIMH) << (shift + 32);
         return stamp;
@@ -304,6 +319,7 @@ static void igb_cache_ring_register(struct igb_adapter *adapter)
                                                               Q_IDX_82576(j);
                 }
         case e1000_82575:
+        case e1000_82580:
         default:
                 for (; i < adapter->num_rx_queues; i++)
                         adapter->rx_ring[i].reg_idx = rbase_offset + i;
@@ -443,6 +459,39 @@ static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector)
                 }
                 q_vector->eims_value = 1 << msix_vector;
                 break;
+        case e1000_82580:
+                /* 82580 uses the same table-based approach as 82576 but has fewer
+                   entries as a result we carry over for queues greater than 4. */
+                if (rx_queue > IGB_N0_QUEUE) {
+                        index = (rx_queue >> 1);
+                        ivar = array_rd32(E1000_IVAR0, index);
+                        if (rx_queue & 0x1) {
+                                /* vector goes into third byte of register */
+                                ivar = ivar & 0xFF00FFFF;
+                                ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
+                        } else {
+                                /* vector goes into low byte of register */
+                                ivar = ivar & 0xFFFFFF00;
+                                ivar |= msix_vector | E1000_IVAR_VALID;
+                        }
+                        array_wr32(E1000_IVAR0, index, ivar);
+                }
+                if (tx_queue > IGB_N0_QUEUE) {
+                        index = (tx_queue >> 1);
+                        ivar = array_rd32(E1000_IVAR0, index);
+                        if (tx_queue & 0x1) {
+                                /* vector goes into high byte of register */
+                                ivar = ivar & 0x00FFFFFF;
+                                ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
+                        } else {
+                                /* vector goes into second byte of register */
+                                ivar = ivar & 0xFFFF00FF;
+                                ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
+                        }
+                        array_wr32(E1000_IVAR0, index, ivar);
+                }
+                q_vector->eims_value = 1 << msix_vector;
+                break;
         default:
                 BUG();
                 break;
@@ -484,6 +533,7 @@ static void igb_configure_msix(struct igb_adapter *adapter)
                 break;
 
         case e1000_82576:
+        case e1000_82580:
                 /* 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 |
@@ -866,6 +916,7 @@ static int igb_request_irq(struct igb_adapter *adapter)
                               E1000_EICR_TX_QUEUE0 |
                               E1000_EIMS_OTHER));
                         break;
+                case e1000_82580:
                 case e1000_82576:
                         wr32(E1000_IVAR0, E1000_IVAR_VALID);
                         break;
@@ -959,10 +1010,15 @@ static void igb_irq_enable(struct igb_adapter *adapter)
                         wr32(E1000_MBVFIMR, 0xFF);
                         ims |= E1000_IMS_VMMB;
                 }
+                if (adapter->hw.mac.type == e1000_82580)
+                        ims |= E1000_IMS_DRSTA;
+
                 wr32(E1000_IMS, ims);
         } else {
-                wr32(E1000_IMS, IMS_ENABLE_MASK);
-                wr32(E1000_IAM, IMS_ENABLE_MASK);
+                wr32(E1000_IMS, IMS_ENABLE_MASK |
+                                E1000_IMS_DRSTA);
+                wr32(E1000_IAM, IMS_ENABLE_MASK |
+                                E1000_IMS_DRSTA);
         }
 }
 
@@ -1184,6 +1240,10 @@ void igb_reset(struct igb_adapter *adapter)
          * To take effect CTRL.RST is required.
          */
         switch (mac->type) {
+        case e1000_82580:
+                pba = rd32(E1000_RXPBS);
+                pba = igb_rxpbs_adjust_82580(pba);
+                break;
         case e1000_82576:
                 pba = rd32(E1000_RXPBS);
                 pba &= E1000_RXPBS_SIZE_MASK_82576;
@@ -1278,6 +1338,11 @@ void igb_reset(struct igb_adapter *adapter)
         if (hw->mac.ops.init_hw(hw))
                 dev_err(&pdev->dev, "Hardware Error\n");
 
+        if (hw->mac.type == e1000_82580) {
+                u32 reg = rd32(E1000_PCIEMISC);
+                wr32(E1000_PCIEMISC,
+                                reg & ~E1000_PCIEMISC_LX_DECISION);
+        }
         igb_update_mng_vlan(adapter);
 
         /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
@@ -1508,6 +1573,10 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 
         if (hw->bus.func == 0)
                 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
+        else if (hw->mac.type == e1000_82580)
+                hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
+                                 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
+                                 &eeprom_data);
         else if (hw->bus.func == 1)
                 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
 
@@ -1746,6 +1815,48 @@ static void igb_init_hw_timer(struct igb_adapter *adapter)
         struct e1000_hw *hw = &adapter->hw;
 
         switch (hw->mac.type) {
+        case e1000_82580:
+                memset(&adapter->cycles, 0, sizeof(adapter->cycles));
+                adapter->cycles.read = igb_read_clock;
+                adapter->cycles.mask = CLOCKSOURCE_MASK(64);
+                adapter->cycles.mult = 1;
+                /*
+                 * The 82580 timesync updates the system timer every 8ns by 8ns
+                 * and the value cannot be shifted.  Instead we need to shift
+                 * the registers to generate a 64bit timer value.  As a result
+                 * SYSTIMR/L/H, TXSTMPL/H, RXSTMPL/H all have to be shifted by
+                 * 24 in order to generate a larger value for synchronization.
+                 */
+                adapter->cycles.shift = IGB_82580_TSYNC_SHIFT;
+                /* disable system timer temporarily by setting bit 31 */
+                wr32(E1000_TSAUXC, 0x80000000);
+                wrfl();
+
+                /* Set registers so that rollover occurs soon to test this. */
+                wr32(E1000_SYSTIMR, 0x00000000);
+                wr32(E1000_SYSTIML, 0x80000000);
+                wr32(E1000_SYSTIMH, 0x000000FF);
+                wrfl();
+
+                /* enable system timer by clearing bit 31 */
+                wr32(E1000_TSAUXC, 0x0);
+                wrfl();
+
+                timecounter_init(&adapter->clock,
+                                 &adapter->cycles,
+                                 ktime_to_ns(ktime_get_real()));
+                /*
+                 * Synchronize our NIC clock against system wall clock. NIC
+                 * time stamp reading requires ~3us per sample, each sample
+                 * was pretty stable even under load => only require 10
+                 * samples for each offset comparison.
+                 */
+                memset(&adapter->compare, 0, sizeof(adapter->compare));
+                adapter->compare.source = &adapter->clock;
+                adapter->compare.target = ktime_get_real;
+                adapter->compare.num_samples = 10;
+                timecompare_update(&adapter->compare, 0);
+                break;
         case e1000_82576:
                 /*
                  * Initialize hardware timer: we keep it running just in case
@@ -2217,6 +2328,10 @@ static void igb_setup_mrqc(struct igb_adapter *adapter)
         if (adapter->vfs_allocated_count) {
                 /* 82575 and 82576 supports 2 RSS queues for VMDq */
                 switch (hw->mac.type) {
+                case e1000_82580:
+                        num_rx_queues = 1;
+                        shift = 0;
+                        break;
                 case e1000_82576:
                         shift = 3;
                         num_rx_queues = 2;
@@ -3694,6 +3809,9 @@ static void igb_tx_timeout(struct net_device *netdev)
         /* Do the reset outside of interrupt context */
         adapter->tx_timeout_count++;
 
+        if (hw->mac.type == e1000_82580)
+                hw->dev_spec._82575.global_device_reset = true;
+
         schedule_work(&adapter->reset_task);
         wr32(E1000_EICS,
              (adapter->eims_enable_mask & ~adapter->eims_other));
@@ -4700,6 +4818,13 @@ static void igb_systim_to_hwtstamp(struct igb_adapter *adapter,
 {
         u64 ns;
 
+        /*
+         * The 82580 starts with 1ns at bit 0 in RX/TXSTMPL, shift this up to
+         * 24 to match clock shift we setup earlier.
+         */
+        if (adapter->hw.mac.type == e1000_82580)
+                regval <<= IGB_82580_TSYNC_SHIFT;
+
         ns = timecounter_cyc2time(&adapter->clock, regval);
         timecompare_update(&adapter->compare, ns);
         memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps));