Merge branch 'master'

5 files changed, 55 insertions, 17 deletions

diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 2c5b849b7ba..30ff8ea1a40 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1021,7 +1021,7 @@ static void restart_tx_queues(struct sge *sge)
 			if (test_and_clear_bit(nd->if_port,
 					       &sge->stopped_tx_queues) &&
 			    netif_running(nd)) {
-				sge->stats.cmdQ_restarted[3]++;
+				sge->stats.cmdQ_restarted[2]++;
 				netif_wake_queue(nd);
 			}
 		}
@@ -1350,7 +1350,7 @@ static int t1_sge_tx(struct sk_buff *skb, struct adapter *adapter,
 	 	if (unlikely(credits < count)) {
 			netif_stop_queue(dev);
 			set_bit(dev->if_port, &sge->stopped_tx_queues);
-			sge->stats.cmdQ_full[3]++;
+			sge->stats.cmdQ_full[2]++;
 			spin_unlock(&q->lock);
 			if (!netif_queue_stopped(dev))
 				CH_ERR("%s: Tx ring full while queue awake!\n",
@@ -1358,7 +1358,7 @@ static int t1_sge_tx(struct sk_buff *skb, struct adapter *adapter,
 			return NETDEV_TX_BUSY;
 		}
 		if (unlikely(credits - count < q->stop_thres)) {
-			sge->stats.cmdQ_full[3]++;
+			sge->stats.cmdQ_full[2]++;
 			netif_stop_queue(dev);
 			set_bit(dev->if_port, &sge->stopped_tx_queues);
 		}
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 24253c807e5..f57a85feda3 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -2154,6 +2154,9 @@ static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
 
 	msleep(10);
 
+	pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr,
+			RFD_BUF_LEN, PCI_DMA_FROMDEVICE);
+
 	if(memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd),
 	   skb->data, ETH_DATA_LEN))
 		err = -EAGAIN;
@@ -2161,8 +2164,8 @@ static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
 err_loopback_none:
 	mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, 0);
 	nic->loopback = lb_none;
-	e100_hw_init(nic);
 	e100_clean_cbs(nic);
+	e100_hw_reset(nic);
 err_clean_rx:
 	e100_rx_clean_list(nic);
 	return err;
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 4c4db96d0b7..84dcca3776e 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -3710,7 +3710,7 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
 		e1000_rx_checksum(adapter,
 				  (uint32_t)(status) |
 				  ((uint32_t)(rx_desc->errors) << 24),
-				  rx_desc->csum, skb);
+				  le16_to_cpu(rx_desc->csum), skb);
 
 		skb->protocol = eth_type_trans(skb, netdev);
 #ifdef CONFIG_E1000_NAPI
@@ -3854,11 +3854,11 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
 		}
 
 		e1000_rx_checksum(adapter, staterr,
-				  rx_desc->wb.lower.hi_dword.csum_ip.csum, skb);
+				  le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
 		skb->protocol = eth_type_trans(skb, netdev);
 
 		if (likely(rx_desc->wb.upper.header_status &
-			  E1000_RXDPS_HDRSTAT_HDRSP))
+			   cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)))
 			adapter->rx_hdr_split++;
 #ifdef CONFIG_E1000_NAPI
 		if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
@@ -3884,7 +3884,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
 #endif
 
 next_desc:
-		rx_desc->wb.middle.status_error &= ~0xFF;
+		rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
 		buffer_info->skb = NULL;
 
 		/* return some buffers to hardware, one at a time is too slow */
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index b8f1524da55..caf4102b54c 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -9552,12 +9552,36 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 		}
 	}
 
-	/* Find msi capability. */
+	/* The EPB bridge inside 5714, 5715, and 5780 cannot support
+	 * DMA addresses > 40-bit. This bridge may have other additional
+	 * 57xx devices behind it in some 4-port NIC designs for example.
+	 * Any tg3 device found behind the bridge will also need the 40-bit
+	 * DMA workaround.
+	 */
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780 ||
 	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) {
 		tp->tg3_flags2 |= TG3_FLG2_5780_CLASS;
+		tp->tg3_flags |= TG3_FLAG_40BIT_DMA_BUG;
 		tp->msi_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_MSI);
 	}
+	else {
+		struct pci_dev *bridge = NULL;
+
+		do {
+			bridge = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
+						PCI_DEVICE_ID_SERVERWORKS_EPB,
+						bridge);
+			if (bridge && bridge->subordinate &&
+			    (bridge->subordinate->number <=
+			     tp->pdev->bus->number) &&
+			    (bridge->subordinate->subordinate >=
+			     tp->pdev->bus->number)) {
+				tp->tg3_flags |= TG3_FLAG_40BIT_DMA_BUG;
+				pci_dev_put(bridge);
+				break;
+			}
+		} while (bridge);
+	}
 
 	/* Initialize misc host control in PCI block. */
 	tp->misc_host_ctrl |= (misc_ctrl_reg &
@@ -10303,7 +10327,14 @@ static int __devinit tg3_test_dma(struct tg3 *tp)
 		    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
 			u32 ccval = (tr32(TG3PCI_CLOCK_CTRL) & 0x1f);
 
-			if (ccval == 0x6 || ccval == 0x7)
+			/* If the 5704 is behind the EPB bridge, we can
+			 * do the less restrictive ONE_DMA workaround for
+			 * better performance.
+			 */
+			if ((tp->tg3_flags & TG3_FLAG_40BIT_DMA_BUG) &&
+			    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704)
+				tp->dma_rwctrl |= 0x8000;
+			else if (ccval == 0x6 || ccval == 0x7)
 				tp->dma_rwctrl |= DMA_RWCTRL_ONE_DMA;
 
 			/* Set bit 23 to enable PCIX hw bug fix */
@@ -10759,19 +10790,20 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
 		goto err_out_iounmap;
 	}
 
-	/* 5714, 5715 and 5780 cannot support DMA addresses > 40-bit.
+	/* The EPB bridge inside 5714, 5715, and 5780 and any
+	 * device behind the EPB cannot support DMA addresses > 40-bit.
 	 * On 64-bit systems with IOMMU, use 40-bit dma_mask.
 	 * On 64-bit systems without IOMMU, use 64-bit dma_mask and
 	 * do DMA address check in tg3_start_xmit().
 	 */
-	if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) {
+	if (tp->tg3_flags2 & TG3_FLG2_IS_5788)
+		persist_dma_mask = dma_mask = DMA_32BIT_MASK;
+	else if (tp->tg3_flags & TG3_FLAG_40BIT_DMA_BUG) {
 		persist_dma_mask = dma_mask = DMA_40BIT_MASK;
 #ifdef CONFIG_HIGHMEM
 		dma_mask = DMA_64BIT_MASK;
 #endif
-	} else if (tp->tg3_flags2 & TG3_FLG2_IS_5788)
-		persist_dma_mask = dma_mask = DMA_32BIT_MASK;
-	else
+	} else
 		persist_dma_mask = dma_mask = DMA_64BIT_MASK;
 
 	/* Configure DMA attributes. */
@@ -10908,8 +10940,10 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
 	       (tp->tg3_flags & TG3_FLAG_SPLIT_MODE) != 0,
 	       (tp->tg3_flags2 & TG3_FLG2_NO_ETH_WIRE_SPEED) == 0,
 	       (tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE) != 0);
-	printk(KERN_INFO "%s: dma_rwctrl[%08x]\n",
-	       dev->name, tp->dma_rwctrl);
+	printk(KERN_INFO "%s: dma_rwctrl[%08x] dma_mask[%d-bit]\n",
+	       dev->name, tp->dma_rwctrl,
+	       (pdev->dma_mask == DMA_32BIT_MASK) ? 32 :
+	        (((u64) pdev->dma_mask == DMA_40BIT_MASK) ? 40 : 64));
 
 	return 0;
 
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 7f4b7f6ac40..7e3b613afb2 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2163,6 +2163,7 @@ struct tg3 {
 #define TG3_FLAG_10_100_ONLY		0x01000000
 #define TG3_FLAG_PAUSE_AUTONEG		0x02000000
 #define TG3_FLAG_IN_RESET_TASK		0x04000000
+#define TG3_FLAG_40BIT_DMA_BUG		0x08000000
 #define TG3_FLAG_BROKEN_CHECKSUMS	0x10000000
 #define TG3_FLAG_GOT_SERDES_FLOWCTL	0x20000000
 #define TG3_FLAG_SPLIT_MODE		0x40000000