[NIU]: Support for Marvell PHY

From: Mirko Lindner <mlindner@marvell.com>

This patch makes necessary changes in the Neptune driver to support 
the new Marvell PHY. It also adds support for the LED blinking
on Neptune cards with Marvell PHY. All registers are using defines
in the niu.h header file as is already done for the BCM8704 registers.

[ Coding style, etc. cleanups -DaveM ]

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 198 insertions, 20 deletions

diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index 9a0c6d3adfe9..3bbcea11329f 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -801,22 +801,90 @@ static int bcm8704_init_user_dev3(struct niu *np)
         return 0;
 }
 
-static int xcvr_init_10g(struct niu *np)
+static int mrvl88x2011_act_led(struct niu *np, int val)
+{
+        int     err;
+
+        err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+                MRVL88X2011_LED_8_TO_11_CTL);
+        if (err < 0)
+                return err;
+
+        err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
+        err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
+
+        return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+                          MRVL88X2011_LED_8_TO_11_CTL, err);
+}
+
+static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
+{
+        int     err;
+
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+                        MRVL88X2011_LED_BLINK_CTL);
+        if (err >= 0) {
+                err &= ~MRVL88X2011_LED_BLKRATE_MASK;
+                err |= (rate << 4);
+
+                err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+                                 MRVL88X2011_LED_BLINK_CTL, err);
+        }
+
+        return err;
+}
+
+static int xcvr_init_10g_mrvl88x2011(struct niu *np)
+{
+        int     err;
+
+        /* Set LED functions */
+        err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
+        if (err)
+                return err;
+
+        /* led activity */
+        err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
+        if (err)
+                return err;
+
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+                        MRVL88X2011_GENERAL_CTL);
+        if (err < 0)
+                return err;
+
+        err |= MRVL88X2011_ENA_XFPREFCLK;
+
+        err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+                         MRVL88X2011_GENERAL_CTL, err);
+        if (err < 0)
+                return err;
+
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+                        MRVL88X2011_PMA_PMD_CTL_1);
+        if (err < 0)
+                return err;
+
+        if (np->link_config.loopback_mode == LOOPBACK_MAC)
+                err |= MRVL88X2011_LOOPBACK;
+        else
+                err &= ~MRVL88X2011_LOOPBACK;
+
+        err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+                         MRVL88X2011_PMA_PMD_CTL_1, err);
+        if (err < 0)
+                return err;
+
+        /* Enable PMD  */
+        return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+                          MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
+}
+
+static int xcvr_init_10g_bcm8704(struct niu *np)
 {
         struct niu_link_config *lp = &np->link_config;
         u16 analog_stat0, tx_alarm_status;
         int err;
-        u64 val;
-
-        val = nr64_mac(XMAC_CONFIG);
-        val &= ~XMAC_CONFIG_LED_POLARITY;
-        val |= XMAC_CONFIG_FORCE_LED_ON;
-        nw64_mac(XMAC_CONFIG, val);
-
-        /* XXX shared resource, lock parent XXX */
-        val = nr64(MIF_CONFIG);
-        val |= MIF_CONFIG_INDIRECT_MODE;
-        nw64(MIF_CONFIG, val);
 
         err = bcm8704_reset(np);
         if (err)
@@ -896,6 +964,38 @@ static int xcvr_init_10g(struct niu *np)
         return 0;
 }
 
+static int xcvr_init_10g(struct niu *np)
+{
+        int phy_id, err;
+        u64 val;
+
+        val = nr64_mac(XMAC_CONFIG);
+        val &= ~XMAC_CONFIG_LED_POLARITY;
+        val |= XMAC_CONFIG_FORCE_LED_ON;
+        nw64_mac(XMAC_CONFIG, val);
+
+        /* XXX shared resource, lock parent XXX */
+        val = nr64(MIF_CONFIG);
+        val |= MIF_CONFIG_INDIRECT_MODE;
+        nw64(MIF_CONFIG, val);
+
+        phy_id = phy_decode(np->parent->port_phy, np->port);
+        phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
+
+        /* handle different phy types */
+        switch (phy_id & NIU_PHY_ID_MASK) {
+        case NIU_PHY_ID_MRVL88X2011:
+                err = xcvr_init_10g_mrvl88x2011(np);
+                break;
+
+        default: /* bcom 8704 */
+                err = xcvr_init_10g_bcm8704(np);
+                break;
+        }
+
+        return 0;
+}
+
 static int mii_reset(struct niu *np)
 {
         int limit, err;
@@ -1082,19 +1182,68 @@ static int niu_link_status_common(struct niu *np, int link_up)
         return 0;
 }
 
-static int link_status_10g(struct niu *np, int *link_up_p)
+static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
 {
-        unsigned long flags;
-        int err, link_up;
+        int err, link_up, pma_status, pcs_status;
 
         link_up = 0;
 
-        spin_lock_irqsave(&np->lock, flags);
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+                        MRVL88X2011_10G_PMD_STATUS_2);
+        if (err < 0)
+                goto out;
 
-        err = -EINVAL;
-        if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+        /* Check PMA/PMD Register: 1.0001.2 == 1 */
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+                        MRVL88X2011_PMA_PMD_STATUS_1);
+        if (err < 0)
+                goto out;
+
+        pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
+
+        /* Check PMC Register : 3.0001.2 == 1: read twice */
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+                        MRVL88X2011_PMA_PMD_STATUS_1);
+        if (err < 0)
+                goto out;
+
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+                        MRVL88X2011_PMA_PMD_STATUS_1);
+        if (err < 0)
+                goto out;
+
+        pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
+
+        /* Check XGXS Register : 4.0018.[0-3,12] */
+        err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
+                        MRVL88X2011_10G_XGXS_LANE_STAT);
+        if (err < 0)
                 goto out;
 
+        if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
+                    PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
+                    PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
+                    0x800))
+                link_up = (pma_status && pcs_status) ? 1 : 0;
+
+        np->link_config.active_speed = SPEED_10000;
+        np->link_config.active_duplex = DUPLEX_FULL;
+        err = 0;
+out:
+        mrvl88x2011_act_led(np, (link_up ?
+                                 MRVL88X2011_LED_CTL_PCS_ACT :
+                                 MRVL88X2011_LED_CTL_OFF));
+
+        *link_up_p = link_up;
+        return err;
+}
+
+static int link_status_10g_bcom(struct niu *np, int *link_up_p)
+{
+        int err, link_up;
+
+        link_up = 0;
+
         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
                         BCM8704_PMD_RCV_SIGDET);
         if (err < 0)
@@ -1134,9 +1283,37 @@ static int link_status_10g(struct niu *np, int *link_up_p)
         err = 0;
 
 out:
+        *link_up_p = link_up;
+        return err;
+}
+
+static int link_status_10g(struct niu *np, int *link_up_p)
+{
+        unsigned long flags;
+        int err = -EINVAL;
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
+                int phy_id;
+
+                phy_id = phy_decode(np->parent->port_phy, np->port);
+                phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
+
+                /* handle different phy types */
+                switch (phy_id & NIU_PHY_ID_MASK) {
+                case NIU_PHY_ID_MRVL88X2011:
+                        err = link_status_10g_mrvl(np, link_up_p);
+                        break;
+
+                default: /* bcom 8704 */
+                        err = link_status_10g_bcom(np, link_up_p);
+                        break;
+                }
+        }
+
         spin_unlock_irqrestore(&np->lock, flags);
 
-        *link_up_p = link_up;
         return err;
 }
 
@@ -6297,7 +6474,8 @@ static int __devinit phy_record(struct niu_parent *parent,
         if (dev_id_1 < 0 || dev_id_2 < 0)
                 return 0;
         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
-                if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704)
+                if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
+                    ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
                         return 0;
         } else {
                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)