diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 5464068..b01f6a0 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -221,6 +221,10 @@
 	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
 	{ PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753F,
 	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780S,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
 	{ PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5781,
 	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
 	{ PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_9DXX,
@@ -508,6 +512,9 @@
 	u32 clock_ctrl = tr32(TG3PCI_CLOCK_CTRL);
 	u32 orig_clock_ctrl;
 
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780)
+		return;
+
 	orig_clock_ctrl = clock_ctrl;
 	clock_ctrl &= (CLOCK_CTRL_FORCE_CLKRUN |
 		       CLOCK_CTRL_CLKRUN_OENABLE |
@@ -1145,6 +1152,8 @@
 		     CLOCK_CTRL_ALTCLK |
 		     CLOCK_CTRL_PWRDOWN_PLL133);
 		udelay(40);
+	} else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) {
+		/* do nothing */
 	} else if (!((tp->tg3_flags2 & TG3_FLG2_5750_PLUS) &&
 		     (tp->tg3_flags & TG3_FLAG_ENABLE_ASF))) {
 		u32 newbits1, newbits2;
@@ -4056,7 +4065,30 @@
 	val &= ~PCIX_CAPS_RELAXED_ORDERING;
 	pci_write_config_dword(tp->pdev, TG3PCI_X_CAPS, val);
 
-	tw32(MEMARB_MODE, MEMARB_MODE_ENABLE);
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) {
+		u32 val;
+
+		/* Chip reset on 5780 will reset MSI enable bit,
+		 * so need to restore it.
+		 */
+		if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
+			u16 ctrl;
+
+			pci_read_config_word(tp->pdev,
+					     tp->msi_cap + PCI_MSI_FLAGS,
+					     &ctrl);
+			pci_write_config_word(tp->pdev,
+					      tp->msi_cap + PCI_MSI_FLAGS,
+					      ctrl | PCI_MSI_FLAGS_ENABLE);
+			val = tr32(MSGINT_MODE);
+			tw32(MSGINT_MODE, val | MSGINT_MODE_ENABLE);
+		}
+
+		val = tr32(MEMARB_MODE);
+		tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE);
+
+	} else
+		tw32(MEMARB_MODE, MEMARB_MODE_ENABLE);
 
 	if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A3) {
 		tg3_stop_fw(tp);
@@ -5683,7 +5715,8 @@
 	tw32(MAC_RCV_RULE_1,  0x86000004 & RCV_RULE_DISABLE_MASK);
 	tw32(MAC_RCV_VALUE_1, 0xffffffff & RCV_RULE_DISABLE_MASK);
 
-	if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS)
+	if ((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) &&
+	    (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780))
 		limit = 8;
 	else
 		limit = 16;
@@ -8928,6 +8961,10 @@
 	if (tp->pci_chip_rev_id == CHIPREV_ID_5752_A0_HW)
 		tp->pci_chip_rev_id = CHIPREV_ID_5752_A0;
 
+	/* Find msi capability. */
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780)
+		tp->msi_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_MSI);
+
 	/* Initialize misc host control in PCI block. */
 	tp->misc_host_ctrl |= (misc_ctrl_reg &
 			       MISC_HOST_CTRL_CHIPREV);
@@ -8943,7 +8980,8 @@
 	tp->pci_bist         = (cacheline_sz_reg >> 24) & 0xff;
 
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
-	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)
+	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 ||
+	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780)
 		tp->tg3_flags2 |= TG3_FLG2_5750_PLUS;
 
 	if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) ||
@@ -9305,8 +9343,9 @@
 #endif
 
 	mac_offset = 0x7c;
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 &&
-	    !(tp->tg3_flags & TG3_FLG2_SUN_570X)) {
+	if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 &&
+	     !(tp->tg3_flags & TG3_FLG2_SUN_570X)) ||
+	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) {
 		if (tr32(TG3PCI_DUAL_MAC_CTRL) & DUAL_MAC_CTRL_ID)
 			mac_offset = 0xcc;
 		if (tg3_nvram_lock(tp))
@@ -9620,6 +9659,9 @@
 
 			/* Set bit 23 to enable PCIX hw bug fix */
 			tp->dma_rwctrl |= 0x009f0000;
+		} else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) {
+			/* 5780 always in PCIX mode */
+			tp->dma_rwctrl |= 0x00144000;
 		} else {
 			tp->dma_rwctrl |= 0x001b000f;
 		}
@@ -9803,6 +9845,7 @@
 	case PHY_ID_BCM5705:	return "5705";
 	case PHY_ID_BCM5750:	return "5750";
 	case PHY_ID_BCM5752:	return "5752";
+	case PHY_ID_BCM5780:	return "5780";
 	case PHY_ID_BCM8002:	return "8002/serdes";
 	case 0:			return "serdes";
 	default:		return "unknown";