e1000: Fixes for 8357x

- TSO workaround
- Fixes eeprom version reporting
- Fix loopback test
- Fix for WOL

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>

5 files changed, 150 insertions, 84 deletions

diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index 3f653a9..e02e9ba 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -188,11 +188,13 @@ struct e1000_tx_ring {
 	/* array of buffer information structs */
 	struct e1000_buffer *buffer_info;
 
-	struct e1000_buffer previous_buffer_info;
 	spinlock_t tx_lock;
 	uint16_t tdh;
 	uint16_t tdt;
 	uint64_t pkt;
+
+	boolean_t last_tx_tso;
+
 };
 
 struct e1000_rx_ring {
diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index 8646914..c88f1a3 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -562,10 +562,29 @@ e1000_get_drvinfo(struct net_device *netdev,
                        struct ethtool_drvinfo *drvinfo)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
+	char firmware_version[32];
+	uint16_t eeprom_data;
 
 	strncpy(drvinfo->driver,  e1000_driver_name, 32);
 	strncpy(drvinfo->version, e1000_driver_version, 32);
-	strncpy(drvinfo->fw_version, "N/A", 32);
+	
+	/* EEPROM image version # is reported as firware version # for
+	 * 8257{1|2|3} controllers */
+	e1000_read_eeprom(&adapter->hw, 5, 1, &eeprom_data);
+	switch (adapter->hw.mac_type) {
+	case e1000_82571:
+	case e1000_82572:
+	case e1000_82573:
+		sprintf(firmware_version, "%d.%d-%d", 
+			(eeprom_data & 0xF000) >> 12,
+			(eeprom_data & 0x0FF0) >> 4,
+			eeprom_data & 0x000F);
+		break;
+	default:
+		sprintf(firmware_version, "n/a");
+	}
+
+	strncpy(drvinfo->fw_version, firmware_version, 32);
 	strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
 	drvinfo->n_stats = E1000_STATS_LEN;
 	drvinfo->testinfo_len = E1000_TEST_LEN;
@@ -1309,21 +1328,32 @@ static int
 e1000_setup_loopback_test(struct e1000_adapter *adapter)
 {
 	uint32_t rctl;
+	struct e1000_hw *hw = &adapter->hw;
 
-	if(adapter->hw.media_type == e1000_media_type_fiber ||
-	   adapter->hw.media_type == e1000_media_type_internal_serdes) {
-		if(adapter->hw.mac_type == e1000_82545 ||
-		   adapter->hw.mac_type == e1000_82546 ||
-		   adapter->hw.mac_type == e1000_82545_rev_3 ||
-		   adapter->hw.mac_type == e1000_82546_rev_3)
+	if (hw->media_type == e1000_media_type_fiber ||
+	   hw->media_type == e1000_media_type_internal_serdes) {
+		switch (hw->mac_type) {
+		case e1000_82545:
+		case e1000_82546:
+		case e1000_82545_rev_3:
+		case e1000_82546_rev_3:
 			return e1000_set_phy_loopback(adapter);
-		else {
-			rctl = E1000_READ_REG(&adapter->hw, RCTL);
+			break;
+		case e1000_82571:
+		case e1000_82572:
+#define E1000_SERDES_LB_ON 0x410
+			e1000_set_phy_loopback(adapter);
+			E1000_WRITE_REG(hw, SCTL, E1000_SERDES_LB_ON);
+			msec_delay(10);
+			return 0;
+			break;
+		default:
+			rctl = E1000_READ_REG(hw, RCTL);
 			rctl |= E1000_RCTL_LBM_TCVR;
-			E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
+			E1000_WRITE_REG(hw, RCTL, rctl);
 			return 0;
 		}
-	} else if(adapter->hw.media_type == e1000_media_type_copper)
+	} else if (hw->media_type == e1000_media_type_copper)
 		return e1000_set_phy_loopback(adapter);
 
 	return 7;
@@ -1334,25 +1364,36 @@ e1000_loopback_cleanup(struct e1000_adapter *adapter)
 {
 	uint32_t rctl;
 	uint16_t phy_reg;
+	struct e1000_hw *hw = &adapter->hw;
 
 	rctl = E1000_READ_REG(&adapter->hw, RCTL);
 	rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
 	E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
 
-	if(adapter->hw.media_type == e1000_media_type_copper ||
-	   ((adapter->hw.media_type == e1000_media_type_fiber ||
-	     adapter->hw.media_type == e1000_media_type_internal_serdes) &&
-	    (adapter->hw.mac_type == e1000_82545 ||
-	     adapter->hw.mac_type == e1000_82546 ||
-	     adapter->hw.mac_type == e1000_82545_rev_3 ||
-	     adapter->hw.mac_type == e1000_82546_rev_3))) {
-		adapter->hw.autoneg = TRUE;
-		e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_reg);
-		if(phy_reg & MII_CR_LOOPBACK) {
+	switch (hw->mac_type) {
+	case e1000_82571:
+	case e1000_82572:
+		if (hw->media_type == e1000_media_type_fiber ||
+		   hw->media_type == e1000_media_type_internal_serdes){
+#define E1000_SERDES_LB_OFF 0x400
+			E1000_WRITE_REG(hw, SCTL, E1000_SERDES_LB_OFF);
+			msec_delay(10);
+			break;
+		}
+		/* fall thru for Cu adapters */
+	case e1000_82545:
+	case e1000_82546:
+	case e1000_82545_rev_3:
+	case e1000_82546_rev_3:
+	default:
+		hw->autoneg = TRUE;
+		e1000_read_phy_reg(hw, PHY_CTRL, &phy_reg);
+		if (phy_reg & MII_CR_LOOPBACK) {
 			phy_reg &= ~MII_CR_LOOPBACK;
-			e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_reg);
-			e1000_phy_reset(&adapter->hw);
+			e1000_write_phy_reg(hw, PHY_CTRL, phy_reg);
+			e1000_phy_reset(hw);
 		}
+		break;
 	}
 }
 
@@ -1681,6 +1722,14 @@ e1000_phys_id(struct net_device *netdev, uint32_t data)
 		msleep_interruptible(data * 1000);
 		del_timer_sync(&adapter->blink_timer);
 	}
+	else if(adapter->hw.mac_type < e1000_82573) {
+		E1000_WRITE_REG(&adapter->hw, LEDCTL, (E1000_LEDCTL_LED2_BLINK_RATE |
+			E1000_LEDCTL_LED0_BLINK | E1000_LEDCTL_LED2_BLINK |
+			(E1000_LEDCTL_MODE_LED_ON << E1000_LEDCTL_LED2_MODE_SHIFT) |
+			(E1000_LEDCTL_MODE_LINK_ACTIVITY << E1000_LEDCTL_LED0_MODE_SHIFT) |
+			(E1000_LEDCTL_MODE_LED_OFF << E1000_LEDCTL_LED1_MODE_SHIFT)));
+		msleep_interruptible(data * 1000);
+	}
 	else {
 		E1000_WRITE_REG(&adapter->hw, LEDCTL, (E1000_LEDCTL_LED2_BLINK_RATE |
 			E1000_LEDCTL_LED1_BLINK | E1000_LEDCTL_LED2_BLINK | 
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c
index a267c52..136fc03 100644
--- a/drivers/net/e1000/e1000_hw.c
+++ b/drivers/net/e1000/e1000_hw.c
@@ -563,11 +563,13 @@ e1000_reset_hw(struct e1000_hw *hw)
             msec_delay(20);
             break;
         case e1000_82573:
-            udelay(10);
-            ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
-            ctrl_ext |= E1000_CTRL_EXT_EE_RST;
-            E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
-            E1000_WRITE_FLUSH(hw);
+            if (e1000_is_onboard_nvm_eeprom(hw) == FALSE) {
+                udelay(10);
+                ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
+                ctrl_ext |= E1000_CTRL_EXT_EE_RST;
+                E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
+                E1000_WRITE_FLUSH(hw);
+            }
             /* fall through */
         case e1000_82571:
         case e1000_82572:
@@ -844,19 +846,27 @@ e1000_setup_link(struct e1000_hw *hw)
      * control setting, then the variable hw->fc will
      * be initialized based on a value in the EEPROM.
      */
-    if(e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data)) {
-        DEBUGOUT("EEPROM Read Error\n");
-        return -E1000_ERR_EEPROM;
-    }
-
-    if(hw->fc == e1000_fc_default) {
-        if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
-            hw->fc = e1000_fc_none;
-        else if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
-                EEPROM_WORD0F_ASM_DIR)
-            hw->fc = e1000_fc_tx_pause;
-        else
+    if (hw->fc == e1000_fc_default) {
+        switch (hw->mac_type) {
+        case e1000_82573:
             hw->fc = e1000_fc_full;
+            break;
+        default:
+            ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG,
+                                        1, &eeprom_data);
+            if (ret_val) {
+                DEBUGOUT("EEPROM Read Error\n");
+                return -E1000_ERR_EEPROM;
+            }
+            if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
+                hw->fc = e1000_fc_none;
+            else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
+                    EEPROM_WORD0F_ASM_DIR)
+                hw->fc = e1000_fc_tx_pause;
+            else
+                hw->fc = e1000_fc_full;
+            break;
+        }
     }
 
     /* We want to save off the original Flow Control configuration just
@@ -2962,13 +2972,22 @@ e1000_phy_hw_reset(struct e1000_hw *hw)
     if(hw->mac_type > e1000_82543) {
         /* Read the device control register and assert the E1000_CTRL_PHY_RST
          * bit. Then, take it out of reset.
+         * For pre-e1000_82571 hardware, we delay for 10ms between the assert 
+         * and deassert.  For e1000_82571 hardware and later, we instead delay
+         * for 10ms after the deassertion.
          */
         ctrl = E1000_READ_REG(hw, CTRL);
         E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST);
         E1000_WRITE_FLUSH(hw);
-        msec_delay(10);
+        
+        if (hw->mac_type < e1000_82571) 
+            msec_delay(10);
+        
         E1000_WRITE_REG(hw, CTRL, ctrl);
         E1000_WRITE_FLUSH(hw);
+        
+        if (hw->mac_type >= e1000_82571)
+            msec_delay(10);
     } else {
         /* Read the Extended Device Control Register, assert the PHY_RESET_DIR
          * bit to put the PHY into reset. Then, take it out of reset.
@@ -5278,11 +5297,15 @@ e1000_get_bus_info(struct e1000_hw *hw)
         hw->bus_speed = e1000_bus_speed_unknown;
         hw->bus_width = e1000_bus_width_unknown;
         break;
-    case e1000_82571:
     case e1000_82572:
     case e1000_82573:
         hw->bus_type = e1000_bus_type_pci_express;
         hw->bus_speed = e1000_bus_speed_2500;
+        hw->bus_width = e1000_bus_width_pciex_1;
+        break;
+    case e1000_82571:
+        hw->bus_type = e1000_bus_type_pci_express;
+        hw->bus_speed = e1000_bus_speed_2500;
         hw->bus_width = e1000_bus_width_pciex_4;
         break;
     default:
@@ -6650,6 +6673,12 @@ e1000_get_auto_rd_done(struct e1000_hw *hw)
         break;
     }
 
+    /* PHY configuration from NVM just starts after EECD_AUTO_RD sets to high.
+     * Need to wait for PHY configuration completion before accessing NVM
+     * and PHY. */
+    if (hw->mac_type == e1000_82573)
+        msec_delay(25);
+
     return E1000_SUCCESS;
 }
 
diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h
index 76ce128..7caa357 100644
--- a/drivers/net/e1000/e1000_hw.h
+++ b/drivers/net/e1000/e1000_hw.h
@@ -123,6 +123,7 @@ typedef enum {
     e1000_bus_width_32,
     e1000_bus_width_64,
     e1000_bus_width_pciex_1,
+    e1000_bus_width_pciex_2,
     e1000_bus_width_pciex_4,
     e1000_bus_width_reserved
 } e1000_bus_width;
@@ -149,6 +150,7 @@ typedef enum {
     e1000_igp_cable_length_90  = 90,
     e1000_igp_cable_length_100 = 100,
     e1000_igp_cable_length_110 = 110,
+    e1000_igp_cable_length_115 = 115,
     e1000_igp_cable_length_120 = 120,
     e1000_igp_cable_length_130 = 130,
     e1000_igp_cable_length_140 = 140,
@@ -1457,6 +1459,7 @@ struct e1000_hw {
 #define E1000_EECD_AUPDEN    0x00100000 /* Enable Autonomous FLASH update */
 #define E1000_EECD_SHADV     0x00200000 /* Shadow RAM Data Valid */
 #define E1000_EECD_SEC1VAL   0x00400000 /* Sector One Valid */
+#define E1000_EECD_SECVAL_SHIFT      22
 #define E1000_STM_OPCODE     0xDB00
 #define E1000_HICR_FW_RESET  0xC0
 
@@ -1951,7 +1954,6 @@ struct e1000_host_command_info {
 
 #define E1000_MDALIGN          4096
 
-#define E1000_GCR_BEM32                 0x00400000
 #define E1000_GCR_L1_ACT_WITHOUT_L0S_RX 0x08000000
 /* Function Active and Power State to MNG */
 #define E1000_FACTPS_FUNC0_POWER_STATE_MASK         0x00000003
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index e0ae248..438a931 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -711,6 +711,7 @@ e1000_probe(struct pci_dev *pdev,
 		break;
 	case e1000_82546:
 	case e1000_82546_rev_3:
+	case e1000_82571:
 		if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
 		   && (adapter->hw.media_type == e1000_media_type_copper)) {
 			e1000_read_eeprom(&adapter->hw,
@@ -1158,7 +1159,6 @@ e1000_setup_tx_resources(struct e1000_adapter *adapter,
 		return -ENOMEM;
 	}
 	memset(txdr->buffer_info, 0, size);
-	memset(&txdr->previous_buffer_info, 0, sizeof(struct e1000_buffer));
 
 	/* round up to nearest 4K */
 
@@ -1813,11 +1813,6 @@ e1000_clean_tx_ring(struct e1000_adapter *adapter,
 
 	/* Free all the Tx ring sk_buffs */
 
-	if (likely(tx_ring->previous_buffer_info.skb != NULL)) {
-		e1000_unmap_and_free_tx_resource(adapter,
-				&tx_ring->previous_buffer_info);
-	}
-
 	for(i = 0; i < tx_ring->count; i++) {
 		buffer_info = &tx_ring->buffer_info[i];
 		e1000_unmap_and_free_tx_resource(adapter, buffer_info);
@@ -1832,6 +1827,7 @@ e1000_clean_tx_ring(struct e1000_adapter *adapter,
 
 	tx_ring->next_to_use = 0;
 	tx_ring->next_to_clean = 0;
+	tx_ring->last_tx_tso = 0;
 
 	writel(0, adapter->hw.hw_addr + tx_ring->tdh);
 	writel(0, adapter->hw.hw_addr + tx_ring->tdt);
@@ -2437,6 +2433,16 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 		buffer_info = &tx_ring->buffer_info[i];
 		size = min(len, max_per_txd);
 #ifdef NETIF_F_TSO
+		/* Workaround for Controller erratum --
+		 * descriptor for non-tso packet in a linear SKB that follows a
+		 * tso gets written back prematurely before the data is fully
+		 * DMAd to the controller */
+		if (!skb->data_len && tx_ring->last_tx_tso &&
+				!skb_shinfo(skb)->tso_size) {
+			tx_ring->last_tx_tso = 0;
+			size -= 4;
+		}
+
 		/* Workaround for premature desc write-backs
 		 * in TSO mode.  Append 4-byte sentinel desc */
 		if(unlikely(mss && !nr_frags && size == len && size > 8))
@@ -2693,6 +2699,14 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 	if(skb->ip_summed == CHECKSUM_HW)
 		count++;
 #endif
+
+#ifdef NETIF_F_TSO
+	/* Controller Erratum workaround */
+	if (!skb->data_len && tx_ring->last_tx_tso &&
+		!skb_shinfo(skb)->tso_size)
+		count++;
+#endif
+
 	count += TXD_USE_COUNT(len, max_txd_pwr);
 
 	if(adapter->pcix_82544)
@@ -2774,9 +2788,10 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 		return NETDEV_TX_OK;
 	}
 
-	if (likely(tso))
+	if (likely(tso)) {
+		tx_ring->last_tx_tso = 1;
 		tx_flags |= E1000_TX_FLAGS_TSO;
-	else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
+	} else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
 		tx_flags |= E1000_TX_FLAGS_CSUM;
 
 	/* Old method was to assume IPv4 packet by default if TSO was enabled.
@@ -3227,37 +3242,12 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
 	eop_desc = E1000_TX_DESC(*tx_ring, eop);
 
 	while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
-		/* Premature writeback of Tx descriptors clear (free buffers
-		 * and unmap pci_mapping) previous_buffer_info */
-		if (likely(tx_ring->previous_buffer_info.skb != NULL)) {
-			e1000_unmap_and_free_tx_resource(adapter,
-					&tx_ring->previous_buffer_info);
-		}
-
 		for(cleaned = FALSE; !cleaned; ) {
 			tx_desc = E1000_TX_DESC(*tx_ring, i);
 			buffer_info = &tx_ring->buffer_info[i];
 			cleaned = (i == eop);
 
-#ifdef NETIF_F_TSO
-			if (!(netdev->features & NETIF_F_TSO)) {
-#endif
-				e1000_unmap_and_free_tx_resource(adapter,
-				                                 buffer_info);
-#ifdef NETIF_F_TSO
-			} else {
-				if (cleaned) {
-					memcpy(&tx_ring->previous_buffer_info,
-					       buffer_info,
-					       sizeof(struct e1000_buffer));
-					memset(buffer_info, 0,
-					       sizeof(struct e1000_buffer));
-				} else {
-					e1000_unmap_and_free_tx_resource(
-					    adapter, buffer_info);
-				}
-			}
-#endif
+			e1000_unmap_and_free_tx_resource(adapter, buffer_info);
 
 			tx_desc->buffer_addr = 0;
 			tx_desc->lower.data = 0;
@@ -3318,12 +3308,6 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
 			netif_stop_queue(netdev);
 		}
 	}
-#ifdef NETIF_F_TSO
-	if (unlikely(!(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
-	    time_after(jiffies, tx_ring->previous_buffer_info.time_stamp + HZ)))
-		e1000_unmap_and_free_tx_resource(
-		    adapter, &tx_ring->previous_buffer_info);
-#endif
 	return cleaned;
 }