[PATCH] sky2: add Yukon-EC ultra support

Add support for Yukon-EC Ultra chip as implemented in SysKonnect's
driver version 8.26.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/sky2.c

@@ -114,9 +114,11 @@ static const struct pci_device_id sky2_id_table[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
 	{ 0 }
 };
 
@@ -130,6 +132,7 @@ static const char *yukon_name[] = {
 	[CHIP_ID_YUKON_LITE - CHIP_ID_YUKON] = "Lite",	/* 0xb0 */
 	[CHIP_ID_YUKON_LP - CHIP_ID_YUKON] = "LP",	/* 0xb2 */
 	[CHIP_ID_YUKON_XL - CHIP_ID_YUKON] = "XL",	/* 0xb3 */
+	[CHIP_ID_YUKON_EC_U - CHIP_ID_YUKON] = "EC Ultra", /* 0xb4 */
 
 	[CHIP_ID_YUKON_EC - CHIP_ID_YUKON] = "EC",	/* 0xb6 */
 	[CHIP_ID_YUKON_FE - CHIP_ID_YUKON] = "FE",	/* 0xb7 */
@@ -599,6 +602,18 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
 	/* Configure Tx MAC FIFO */
 	sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
 	sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
+
+	if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
+		sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
+		sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
+		if (hw->dev[port]->mtu > ETH_DATA_LEN) {
+			/* set Tx GMAC FIFO Almost Empty Threshold */
+			sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
+			/* Disable Store & Forward mode for TX */
+			sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
+		}
+	}
+
 }
 
 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, size_t len)
@@ -984,6 +999,10 @@ static int sky2_up(struct net_device *dev)
 		    RB_RST_SET);
 
 	sky2_qset(hw, txqaddr[port], 0x600);
+	if (hw->chip_id == CHIP_ID_YUKON_EC_U)
+		sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
+
+
 	sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
 			   TX_RING_SIZE - 1);
 
@@ -1553,6 +1572,9 @@ static int sky2_change_mtu(struct net_device *dev, int new_mtu)
 	if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
 		return -EINVAL;
 
+	if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
+		return -EINVAL;
+
 	if (!netif_running(dev)) {
 		dev->mtu = new_mtu;
 		return 0;
@@ -1972,6 +1994,7 @@ static inline u32 sky2_khz(const struct sky2_hw *hw)
 {
 	switch (hw->chip_id) {
 	case CHIP_ID_YUKON_EC:
+	case CHIP_ID_YUKON_EC_U:
 		return 125000;	/* 125 Mhz */
 	case CHIP_ID_YUKON_FE:
 		return 100000;	/* 100 Mhz */
@@ -2796,7 +2819,9 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
 
 	sky2->port = port;
 
-	dev->features |= NETIF_F_LLTX | NETIF_F_TSO;
+	dev->features |= NETIF_F_LLTX;
+	if (hw->chip_id != CHIP_ID_YUKON_EC_U)
+		dev->features |= NETIF_F_TSO;
 	if (highmem)
 		dev->features |= NETIF_F_HIGHDMA;
 	dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;

drivers/net/sky2.h

@@ -309,7 +309,7 @@ enum {
 			  Y2_IS_PAR_RX2 | Y2_IS_TCP_TXS2| Y2_IS_TCP_TXA2,
 
 	Y2_HWE_ALL_MASK	= Y2_IS_TIST_OV | Y2_IS_MST_ERR | Y2_IS_IRQ_STAT |
-			  Y2_IS_PCI_EXP | Y2_IS_PCI_NEXP |
+			  Y2_IS_PCI_EXP |
 			  Y2_HWE_L1_MASK | Y2_HWE_L2_MASK,
 };
 
@@ -346,6 +346,7 @@ enum {
 	CHIP_ID_YUKON_LITE = 0xb1, /* Chip ID for YUKON-Lite (Rev. A1-A3) */
 	CHIP_ID_YUKON_LP   = 0xb2, /* Chip ID for YUKON-LP */
 	CHIP_ID_YUKON_XL   = 0xb3, /* Chip ID for YUKON-2 XL */
+	CHIP_ID_YUKON_EC_U = 0xb4, /* Chip ID for YUKON-2 EC Ultra */
 	CHIP_ID_YUKON_EC   = 0xb6, /* Chip ID for YUKON-2 EC */
  	CHIP_ID_YUKON_FE   = 0xb7, /* Chip ID for YUKON-2 FE */
 
@@ -579,7 +580,8 @@ enum {
 	RX_GMF_FL_MSK	= 0x0c4c,/* 32 bit	Rx GMAC FIFO Flush Mask */
 	RX_GMF_FL_THR	= 0x0c50,/* 32 bit	Rx GMAC FIFO Flush Threshold */
 	RX_GMF_TR_THR	= 0x0c54,/* 32 bit	Rx Truncation Threshold (Yukon-2) */
-
+	RX_GMF_UP_THR	= 0x0c58,/*  8 bit	Rx Upper Pause Thr (Yukon-EC_U) */
+	RX_GMF_LP_THR	= 0x0c5a,/*  8 bit	Rx Lower Pause Thr (Yukon-EC_U) */
 	RX_GMF_VLAN	= 0x0c5c,/* 32 bit	Rx VLAN Type Register (Yukon-2) */
 	RX_GMF_WP	= 0x0c60,/* 32 bit	Rx GMAC FIFO Write Pointer */
 
@@ -1557,6 +1559,9 @@ enum {
 
 /*	TX_GMF_CTRL_T	32 bit	Tx GMAC FIFO Control/Test */
 enum {
+	TX_STFW_DIS	= 1<<31,/* Disable Store & Forward (Yukon-EC Ultra) */
+	TX_STFW_ENA	= 1<<30,/* Enable  Store & Forward (Yukon-EC Ultra) */
+
 	TX_VLAN_TAG_ON	= 1<<25,/* enable  VLAN tagging */
 	TX_VLAN_TAG_OFF	= 1<<24,/* disable VLAN tagging */