sky2: fix pause negotiation

The sky2 driver combines auto speed negotiation with automatic negotiation
of pause parameters; but the ethtool interface expects them to be
split. This patch allows autonegotiation to be used for speed, but
manually disable flow control.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 4944fcc..6788a91 100644 (file)
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -321,7 +321,7 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
        struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
        u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
 
-       if (sky2->autoneg == AUTONEG_ENABLE &&
+       if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
            !(hw->flags & SKY2_HW_NEWER_PHY)) {
                u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
 
@@ -363,7 +363,7 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                        ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
 
                        /* downshift on PHY 88E1112 and 88E1149 is changed */
-                       if (sky2->autoneg == AUTONEG_ENABLE
+                       if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED)
                            && (hw->flags & SKY2_HW_NEWER_PHY)) {
                                /* set downshift counter to 3x and enable downshift */
                                ctrl &= ~PHY_M_PC_DSC_MSK;
@@ -408,7 +408,7 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
        adv = PHY_AN_CSMA;
        reg = 0;
 
-       if (sky2->autoneg == AUTONEG_ENABLE) {
+       if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
                if (sky2_is_copper(hw)) {
                        if (sky2->advertising & ADVERTISED_1000baseT_Full)
                                ct1000 |= PHY_M_1000C_AFD;
@@ -423,14 +423,11 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                        if (sky2->advertising & ADVERTISED_10baseT_Half)
                                adv |= PHY_M_AN_10_HD;
 
-                       adv |= copper_fc_adv[sky2->flow_mode];
                } else {        /* special defines for FIBER (88E1040S only) */
                        if (sky2->advertising & ADVERTISED_1000baseT_Full)
                                adv |= PHY_M_AN_1000X_AFD;
                        if (sky2->advertising & ADVERTISED_1000baseT_Half)
                                adv |= PHY_M_AN_1000X_AHD;
-
-                       adv |= fiber_fc_adv[sky2->flow_mode];
                }
 
                /* Restart Auto-negotiation */
@@ -439,8 +436,8 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                /* forced speed/duplex settings */
                ct1000 = PHY_M_1000C_MSE;
 
-               /* Disable auto update for duplex flow control and speed */
-               reg |= GM_GPCR_AU_ALL_DIS;
+               /* Disable auto update for duplex flow control and duplex */
+               reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
 
                switch (sky2->speed) {
                case SPEED_1000:
@@ -458,8 +455,15 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                        ctrl |= PHY_CT_DUP_MD;
                } else if (sky2->speed < SPEED_1000)
                        sky2->flow_mode = FC_NONE;
+       }
 
-
+       if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
+               if (sky2_is_copper(hw))
+                       adv |= copper_fc_adv[sky2->flow_mode];
+               else
+                       adv |= fiber_fc_adv[sky2->flow_mode];
+       } else {
+               reg |= GM_GPCR_AU_FCT_DIS;
                reg |= gm_fc_disable[sky2->flow_mode];
 
                /* Forward pause packets to GMAC? */
@@ -594,7 +598,8 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                /* no effect on Yukon-XL */
                gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
 
-               if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
+               if ( !(sky2->flags & SKY2_FLAG_AUTO_SPEED)
+                    || sky2->speed == SPEED_100) {
                        /* turn on 100 Mbps LED (LED_LINK100) */
                        ledover |= PHY_M_LED_MO_100(MO_LED_ON);
                }
@@ -605,7 +610,7 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
        }
 
        /* Enable phy interrupt on auto-negotiation complete (or link up) */
-       if (sky2->autoneg == AUTONEG_ENABLE)
+       if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
                gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
        else
                gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
@@ -661,7 +666,9 @@ static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
 
        /* setup General Purpose Control Register */
        gma_write16(hw, port, GM_GP_CTRL,
-                   GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 | GM_GPCR_AU_ALL_DIS);
+                   GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
+                   GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
+                   GM_GPCR_AU_SPD_DIS);
 
        if (hw->chip_id != CHIP_ID_YUKON_EC) {
                if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
@@ -1117,7 +1124,8 @@ static void rx_set_checksum(struct sky2_port *sky2)
 
        sky2_write32(sky2->hw,
                     Q_ADDR(rxqaddr[sky2->port], Q_CSR),
-                    sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
+                    (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
+                    ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
 }
 
 /*
@@ -2087,7 +2095,7 @@ static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
                printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
                       sky2->netdev->name, istatus, phystat);
 
-       if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
+       if (istatus & PHY_M_IS_AN_COMPL) {
                if (sky2_autoneg_done(sky2, phystat) == 0)
                        sky2_link_up(sky2);
                goto out;
@@ -2453,7 +2461,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
 
                        /* This chip reports checksum status differently */
                        if (hw->flags & SKY2_HW_NEW_LE) {
-                               if (sky2->rx_csum &&
+                               if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
                                    (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
                                    (le->css & CSS_TCPUDPCSOK))
                                        skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -2480,7 +2488,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
                        /* fall through */
 #endif
                case OP_RXCHKS:
-                       if (!sky2->rx_csum)
+                       if (!(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
                                break;
 
                        /* If this happens then driver assuming wrong format */
@@ -2505,7 +2513,8 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
                                printk(KERN_NOTICE PFX "%s: hardware receive "
                                       "checksum problem (status = %#x)\n",
                                       dev->name, status);
-                               sky2->rx_csum = 0;
+                               sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
+
                                sky2_write32(sky2->hw,
                                             Q_ADDR(rxqaddr[port], Q_CSR),
                                             BMU_DIS_RX_CHKSUM);
@@ -3206,7 +3215,8 @@ static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
        }
 
        ecmd->advertising = sky2->advertising;
-       ecmd->autoneg = sky2->autoneg;
+       ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
+               ? AUTONEG_ENABLE : AUTONEG_DISABLE;
        ecmd->duplex = sky2->duplex;
        return 0;
 }
@@ -3218,6 +3228,7 @@ static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
        u32 supported = sky2_supported_modes(hw);
 
        if (ecmd->autoneg == AUTONEG_ENABLE) {
+               sky2->flags |= SKY2_FLAG_AUTO_SPEED;
                ecmd->advertising = supported;
                sky2->duplex = -1;
                sky2->speed = -1;
@@ -3259,9 +3270,9 @@ static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 
                sky2->speed = ecmd->speed;
                sky2->duplex = ecmd->duplex;
+               sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
        }
 
-       sky2->autoneg = ecmd->autoneg;
        sky2->advertising = ecmd->advertising;
 
        if (netif_running(dev)) {
@@ -3331,14 +3342,17 @@ static u32 sky2_get_rx_csum(struct net_device *dev)
 {
        struct sky2_port *sky2 = netdev_priv(dev);
 
-       return sky2->rx_csum;
+       return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
 }
 
 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
 {
        struct sky2_port *sky2 = netdev_priv(dev);
 
-       sky2->rx_csum = data;
+       if (data)
+               sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
+       else
+               sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
 
        sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
                     data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
@@ -3356,7 +3370,7 @@ static int sky2_nway_reset(struct net_device *dev)
 {
        struct sky2_port *sky2 = netdev_priv(dev);
 
-       if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
+       if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
                return -EINVAL;
 
        sky2_phy_reinit(sky2);
@@ -3596,7 +3610,8 @@ static void sky2_get_pauseparam(struct net_device *dev,
                ecmd->tx_pause = ecmd->rx_pause = 1;
        }
 
-       ecmd->autoneg = sky2->autoneg;
+       ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
+               ? AUTONEG_ENABLE : AUTONEG_DISABLE;
 }
 
 static int sky2_set_pauseparam(struct net_device *dev,
@@ -3604,7 +3619,11 @@ static int sky2_set_pauseparam(struct net_device *dev,
 {
        struct sky2_port *sky2 = netdev_priv(dev);
 
-       sky2->autoneg = ecmd->autoneg;
+       if (ecmd->autoneg == AUTONEG_ENABLE)
+               sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
+       else
+               sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
+
        sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
 
        if (netif_running(dev))
@@ -4294,13 +4313,15 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
        sky2->msg_enable = netif_msg_init(debug, default_msg);
 
        /* Auto speed and flow control */
-       sky2->autoneg = AUTONEG_ENABLE;
+       sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
+       if (hw->chip_id != CHIP_ID_YUKON_XL)
+               sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
+
        sky2->flow_mode = FC_BOTH;
 
        sky2->duplex = -1;
        sky2->speed = -1;
        sky2->advertising = sky2_supported_modes(hw);
-       sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
        sky2->wol = wol;
 
        spin_lock_init(&sky2->phy_lock);

diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 4486b06..c9548d6 100644 (file)
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -1583,7 +1583,6 @@ enum {
 };
 
 #define GM_GPCR_SPEED_1000     (GM_GPCR_GIGS_ENA | GM_GPCR_SPEED_100)
-#define GM_GPCR_AU_ALL_DIS     (GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS|GM_GPCR_AU_SPD_DIS)
 
 /*     GM_TX_CTRL                      16 bit r/w      Transmit Control Register */
 enum {
@@ -2042,15 +2041,18 @@ struct sky2_port {
                u8      fifo_lev;
        } check;
 
-
        dma_addr_t           rx_le_map;
        dma_addr_t           tx_le_map;
+
        u16                  advertising;       /* ADVERTISED_ bits */
-       u16                  speed;     /* SPEED_1000, SPEED_100, ... */
-       u8                   autoneg;   /* AUTONEG_ENABLE, AUTONEG_DISABLE */
-       u8                   duplex;    /* DUPLEX_HALF, DUPLEX_FULL */
-       u8                   rx_csum;
-       u8                   wol;
+       u16                  speed;             /* SPEED_1000, SPEED_100, ... */
+       u8                   wol;               /* WAKE_ bits */
+       u8                   duplex;            /* DUPLEX_HALF, DUPLEX_FULL */
+       u16                  flags;
+#define SKY2_FLAG_RX_CHECKSUM          0x0001
+#define SKY2_FLAG_AUTO_SPEED           0x0002
+#define SKY2_FLAG_AUTO_PAUSE           0x0004
+
        u8                   restarting;
        enum flow_control    flow_mode;
        enum flow_control    flow_status;