niu: Add support for Neptune FEM/NEM cards for C10 server blades

[ Minor coding style and whitespace corrections, also bump
  driver version and release date. -DaveM ]

Signed-off-by: Matheos Worku <matheos.worku@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 277 insertions, 30 deletions

diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index c7c173c3f808..4009c4ce96b4 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -33,8 +33,8 @@
 
 #define DRV_MODULE_NAME         "niu"
 #define PFX DRV_MODULE_NAME     ": "
-#define DRV_MODULE_VERSION      "0.7"
-#define DRV_MODULE_RELDATE      "February 18, 2008"
+#define DRV_MODULE_VERSION      "0.8"
+#define DRV_MODULE_RELDATE      "April 24, 2008"
 
 static char version[] __devinitdata =
         DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
@@ -673,11 +673,16 @@ static int serdes_init_10g(struct niu *np)
         }
 
         if ((sig & mask) != val) {
+                if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
+                        np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+                        return 0;
+                }
                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
                 return -ENODEV;
         }
-
+        if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
+                np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
         return 0;
 }
 
@@ -998,6 +1003,28 @@ static int bcm8704_user_dev3_readback(struct niu *np, int reg)
         return 0;
 }
 
+static int bcm8706_init_user_dev3(struct niu *np)
+{
+        int err;
+
+
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                        BCM8704_USER_OPT_DIGITAL_CTRL);
+        if (err < 0)
+                return err;
+        err &= ~USER_ODIG_CTRL_GPIOS;
+        err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
+        err |=  USER_ODIG_CTRL_RESV2;
+        err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                         BCM8704_USER_OPT_DIGITAL_CTRL, err);
+        if (err)
+                return err;
+
+        mdelay(1000);
+
+        return 0;
+}
+
 static int bcm8704_init_user_dev3(struct niu *np)
 {
         int err;
@@ -1127,33 +1154,11 @@ static int xcvr_init_10g_mrvl88x2011(struct niu *np)
                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
 }
 
-static int xcvr_init_10g_bcm8704(struct niu *np)
+
+static int xcvr_diag_bcm870x(struct niu *np)
 {
-        struct niu_link_config *lp = &np->link_config;
         u16 analog_stat0, tx_alarm_status;
-        int err;
-
-        err = bcm8704_reset(np);
-        if (err)
-                return err;
-
-        err = bcm8704_init_user_dev3(np);
-        if (err)
-                return err;
-
-        err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
-                        MII_BMCR);
-        if (err < 0)
-                return err;
-        err &= ~BMCR_LOOPBACK;
-
-        if (lp->loopback_mode == LOOPBACK_MAC)
-                err |= BMCR_LOOPBACK;
-
-        err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
-                         MII_BMCR, err);
-        if (err)
-                return err;
+        int err = 0;
 
 #if 1
         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
@@ -1211,6 +1216,89 @@ static int xcvr_init_10g_bcm8704(struct niu *np)
         return 0;
 }
 
+static int xcvr_10g_set_lb_bcm870x(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        int err;
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+                        MII_BMCR);
+        if (err < 0)
+                return err;
+
+        err &= ~BMCR_LOOPBACK;
+
+        if (lp->loopback_mode == LOOPBACK_MAC)
+                err |= BMCR_LOOPBACK;
+
+        err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+                         MII_BMCR, err);
+        if (err)
+                return err;
+
+        return 0;
+}
+
+static int xcvr_init_10g_bcm8706(struct niu *np)
+{
+        int err = 0;
+        u64 val;
+
+        if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
+            (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
+                        return err;
+
+        val = nr64_mac(XMAC_CONFIG);
+        val &= ~XMAC_CONFIG_LED_POLARITY;
+        val |= XMAC_CONFIG_FORCE_LED_ON;
+        nw64_mac(XMAC_CONFIG, val);
+
+        val = nr64(MIF_CONFIG);
+        val |= MIF_CONFIG_INDIRECT_MODE;
+        nw64(MIF_CONFIG, val);
+
+        err = bcm8704_reset(np);
+        if (err)
+                return err;
+
+        err = xcvr_10g_set_lb_bcm870x(np);
+        if (err)
+                return err;
+
+        err = bcm8706_init_user_dev3(np);
+        if (err)
+                return err;
+
+        err = xcvr_diag_bcm870x(np);
+        if (err)
+                return err;
+
+        return 0;
+}
+
+static int xcvr_init_10g_bcm8704(struct niu *np)
+{
+        int err;
+
+        err = bcm8704_reset(np);
+        if (err)
+                return err;
+
+        err = bcm8704_init_user_dev3(np);
+        if (err)
+                return err;
+
+        err = xcvr_10g_set_lb_bcm870x(np);
+        if (err)
+                return err;
+
+        err =  xcvr_diag_bcm870x(np);
+        if (err)
+                return err;
+
+        return 0;
+}
+
 static int xcvr_init_10g(struct niu *np)
 {
         int phy_id, err;
@@ -1548,6 +1636,59 @@ out:
         return err;
 }
 
+static int link_status_10g_bcm8706(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)
+                goto out;
+        if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
+                err = 0;
+                goto out;
+        }
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+                        BCM8704_PCS_10G_R_STATUS);
+        if (err < 0)
+                goto out;
+
+        if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
+                err = 0;
+                goto out;
+        }
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+                        BCM8704_PHYXS_XGXS_LANE_STAT);
+        if (err < 0)
+                goto out;
+        if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
+                    PHYXS_XGXS_LANE_STAT_MAGIC |
+                    PHYXS_XGXS_LANE_STAT_PATTEST |
+                    PHYXS_XGXS_LANE_STAT_LANE3 |
+                    PHYXS_XGXS_LANE_STAT_LANE2 |
+                    PHYXS_XGXS_LANE_STAT_LANE1 |
+                    PHYXS_XGXS_LANE_STAT_LANE0)) {
+                err = 0;
+                np->link_config.active_speed = SPEED_INVALID;
+                np->link_config.active_duplex = DUPLEX_INVALID;
+                goto out;
+        }
+
+        link_up = 1;
+        np->link_config.active_speed = SPEED_10000;
+        np->link_config.active_duplex = DUPLEX_FULL;
+        err = 0;
+
+out:
+        *link_up_p = link_up;
+        if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
+                err = 0;
+        return err;
+}
+
 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
 {
         int err, link_up;
@@ -1627,6 +1768,82 @@ static int link_status_10g(struct niu *np, int *link_up_p)
         return err;
 }
 
+static int niu_10g_phy_present(struct niu *np)
+{
+        u64 sig, mask, val;
+
+        sig = nr64(ESR_INT_SIGNALS);
+        switch (np->port) {
+        case 0:
+                mask = ESR_INT_SIGNALS_P0_BITS;
+                val = (ESR_INT_SRDY0_P0 |
+                       ESR_INT_DET0_P0 |
+                       ESR_INT_XSRDY_P0 |
+                       ESR_INT_XDP_P0_CH3 |
+                       ESR_INT_XDP_P0_CH2 |
+                       ESR_INT_XDP_P0_CH1 |
+                       ESR_INT_XDP_P0_CH0);
+                break;
+
+        case 1:
+                mask = ESR_INT_SIGNALS_P1_BITS;
+                val = (ESR_INT_SRDY0_P1 |
+                       ESR_INT_DET0_P1 |
+                       ESR_INT_XSRDY_P1 |
+                       ESR_INT_XDP_P1_CH3 |
+                       ESR_INT_XDP_P1_CH2 |
+                       ESR_INT_XDP_P1_CH1 |
+                       ESR_INT_XDP_P1_CH0);
+                break;
+
+        default:
+                return 0;
+        }
+
+        if ((sig & mask) != val)
+                return 0;
+        return 1;
+}
+
+static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
+{
+        unsigned long flags;
+        int err = 0;
+        int phy_present;
+        int phy_present_prev;
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
+                phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
+                        1 : 0;
+                phy_present = niu_10g_phy_present(np);
+                if (phy_present != phy_present_prev) {
+                        /* state change */
+                        if (phy_present) {
+                                np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+                                if (np->phy_ops->xcvr_init)
+                                        err = np->phy_ops->xcvr_init(np);
+                                if (err) {
+                                        /* debounce */
+                                        np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+                                }
+                        } else {
+                                np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+                                *link_up_p = 0;
+                                niuwarn(LINK, "%s: Hotplug PHY Removed\n",
+                                        np->dev->name);
+                        }
+                }
+                if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT)
+                        err = link_status_10g_bcm8706(np, link_up_p);
+        }
+
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        return err;
+}
+
 static int link_status_1g(struct niu *np, int *link_up_p)
 {
         struct niu_link_config *lp = &np->link_config;
@@ -1761,6 +1978,12 @@ static const struct niu_phy_ops phy_ops_10g_fiber = {
         .link_status            = link_status_10g,
 };
 
+static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
+        .serdes_init            = serdes_init_10g,
+        .xcvr_init              = xcvr_init_10g_bcm8706,
+        .link_status            = link_status_10g_hotplug,
+};
+
 static const struct niu_phy_ops phy_ops_10g_copper = {
         .serdes_init            = serdes_init_10g,
         .link_status            = link_status_10g, /* XXX */
@@ -1792,6 +2015,11 @@ static const struct niu_phy_template phy_template_10g_fiber = {
         .phy_addr_base  = 8,
 };
 
+static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
+        .ops            = &phy_ops_10g_fiber_hotplug,
+        .phy_addr_base  = 8,
+};
+
 static const struct niu_phy_template phy_template_10g_copper = {
         .ops            = &phy_ops_10g_copper,
         .phy_addr_base  = 10,
@@ -1996,6 +2224,13 @@ static int niu_determine_phy_disposition(struct niu *np)
                             plat_type == PLAT_TYPE_VF_P1)
                                 phy_addr_off = 8;
                         phy_addr_off += np->port;
+                        if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
+                                tp = &phy_template_10g_fiber_hotplug;
+                                if (np->port == 0)
+                                        phy_addr_off = 8;
+                                if (np->port == 1)
+                                        phy_addr_off = 12;
+                        }
                         break;
 
                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
@@ -6830,6 +7065,9 @@ static void __devinit niu_pci_vpd_validate(struct niu *np)
                 }
                 if (np->flags & NIU_FLAGS_10G)
                          np->mac_xcvr = MAC_XCVR_XPCS;
+        } else if (niu_board_model_match(np, NIU_FOXXY_BM_STR)) {
+                np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
+                              NIU_FLAGS_HOTPLUG_PHY);
         } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
                 dev_err(np->device, PFX "Illegal phy string [%s].\n",
                         np->vpd.phy_type);
@@ -7052,7 +7290,8 @@ static int __devinit phy_record(struct niu_parent *parent,
                 return 0;
         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
                 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
-                    ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
+                    ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
+                    ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
                         return 0;
         } else {
                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
@@ -7299,7 +7538,6 @@ static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
         u32 val;
         int err;
 
-
         if (!strcmp(np->vpd.model, "SUNW,CP3220") ||
             !strcmp(np->vpd.model, "SUNW,CP3260")) {
                 num_10g = 0;
@@ -7310,6 +7548,12 @@ static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
                        phy_encode(PORT_TYPE_1G, 1) |
                        phy_encode(PORT_TYPE_1G, 2) |
                        phy_encode(PORT_TYPE_1G, 3));
+        } else if (niu_board_model_match(np, NIU_FOXXY_BM_STR)) {
+                num_10g = 2;
+                num_1g = 0;
+                parent->num_ports = 2;
+                val = (phy_encode(PORT_TYPE_10G, 0) |
+                       phy_encode(PORT_TYPE_10G, 1));
         } else {
                 err = fill_phy_probe_info(np, parent, info);
                 if (err)
diff --git a/drivers/net/niu.h b/drivers/net/niu.h
index 35e9afb23bdf..97ffbe137bcb 100644
--- a/drivers/net/niu.h
+++ b/drivers/net/niu.h
@@ -2537,6 +2537,7 @@ struct fcram_hash_ipv6 {
 
 #define NIU_PHY_ID_MASK                 0xfffff0f0
 #define NIU_PHY_ID_BCM8704              0x00206030
+#define NIU_PHY_ID_BCM8706              0x00206035
 #define NIU_PHY_ID_BCM5464R             0x002060b0
 #define NIU_PHY_ID_MRVL88X2011          0x01410020
 
@@ -3208,6 +3209,8 @@ struct niu {
         struct niu_parent               *parent;
 
         u32                             flags;
+#define NIU_FLAGS_HOTPLUG_PHY_PRESENT   0x02000000 /* Removebale PHY detected*/
+#define NIU_FLAGS_HOTPLUG_PHY           0x01000000 /* Removebale PHY */
 #define NIU_FLAGS_VPD_VALID             0x00800000 /* VPD has valid version */
 #define NIU_FLAGS_MSIX                  0x00400000 /* MSI-X in use */
 #define NIU_FLAGS_MCAST                 0x00200000 /* multicast filter enabled */