[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>

2 files changed, 33 insertions, 3 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index e6f71c1232bc..aff347f1ea4b 100644
--- a/drivers/net/sky2.c
+++ b/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;
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 629d08f170fd..f836b0322b19 100644
--- a/drivers/net/sky2.h
+++ b/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 */