net/ps3: Add support for gelic link negotiation

Add ethtool_ops.set_settings support to the PS3 gelic network driver.
Allows manual setting of ethernet link speed.

Signed-off-by: Hideyuki Sasaki <xhide@rd.scei.sony.co.jp>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 72 insertions, 2 deletions

diff --git a/drivers/net/ps3_gelic_net.c b/drivers/net/ps3_gelic_net.c
index 06a29768a864..89c4948300a5 100644
--- a/drivers/net/ps3_gelic_net.c
+++ b/drivers/net/ps3_gelic_net.c
@@ -107,6 +107,24 @@ static void gelic_card_get_ether_port_status(struct gelic_card *card,
         }
 }
 
+static int gelic_card_set_link_mode(struct gelic_card *card, int mode)
+{
+        int status;
+        u64 v1, v2;
+
+        status = lv1_net_control(bus_id(card), dev_id(card),
+                                 GELIC_LV1_SET_NEGOTIATION_MODE,
+                                 GELIC_LV1_PHY_ETHERNET_0, mode, 0, &v1, &v2);
+        if (status) {
+                pr_info("%s: failed setting negotiation mode %d\n", __func__,
+                        status);
+                return -EBUSY;
+        }
+
+        card->link_mode = mode;
+        return 0;
+}
+
 void gelic_card_up(struct gelic_card *card)
 {
         pr_debug("%s: called\n", __func__);
@@ -1244,14 +1262,58 @@ static int gelic_ether_get_settings(struct net_device *netdev,
         cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg |
                         SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
                         SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
-                        SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
+                        SUPPORTED_1000baseT_Full;
         cmd->advertising = cmd->supported;
-        cmd->autoneg = AUTONEG_ENABLE; /* always enabled */
+        if (card->link_mode & GELIC_LV1_ETHER_AUTO_NEG) {
+                cmd->autoneg = AUTONEG_ENABLE;
+        } else {
+                cmd->autoneg = AUTONEG_DISABLE;
+                cmd->advertising &= ~ADVERTISED_Autoneg;
+        }
         cmd->port = PORT_TP;
 
         return 0;
 }
 
+static int gelic_ether_set_settings(struct net_device *netdev,
+                                    struct ethtool_cmd *cmd)
+{
+        struct gelic_card *card = netdev_card(netdev);
+        u64 mode;
+        int ret;
+
+        if (cmd->autoneg == AUTONEG_ENABLE) {
+                mode = GELIC_LV1_ETHER_AUTO_NEG;
+        } else {
+                switch (cmd->speed) {
+                case SPEED_10:
+                        mode = GELIC_LV1_ETHER_SPEED_10;
+                        break;
+                case SPEED_100:
+                        mode = GELIC_LV1_ETHER_SPEED_100;
+                        break;
+                case SPEED_1000:
+                        mode = GELIC_LV1_ETHER_SPEED_1000;
+                        break;
+                default:
+                        return -EINVAL;
+                }
+                if (cmd->duplex == DUPLEX_FULL)
+                        mode |= GELIC_LV1_ETHER_FULL_DUPLEX;
+                else if (cmd->speed == SPEED_1000) {
+                        pr_info("1000 half duplex is not supported.\n");
+                        return -EINVAL;
+                }
+        }
+
+        ret = gelic_card_set_link_mode(card, mode);
+
+        if (ret)
+                return ret;
+
+        return 0;
+}
+
 u32 gelic_net_get_rx_csum(struct net_device *netdev)
 {
         struct gelic_card *card = netdev_card(netdev);
@@ -1349,6 +1411,7 @@ done:
 static const struct ethtool_ops gelic_ether_ethtool_ops = {
         .get_drvinfo    = gelic_net_get_drvinfo,
         .get_settings   = gelic_ether_get_settings,
+        .set_settings   = gelic_ether_set_settings,
         .get_link       = ethtool_op_get_link,
         .get_tx_csum    = ethtool_op_get_tx_csum,
         .set_tx_csum    = ethtool_op_set_tx_csum,
@@ -1657,6 +1720,8 @@ static int __devinit ps3_gelic_driver_probe(struct ps3_system_bus_device *dev)
         /* get internal vlan info */
         gelic_card_get_vlan_info(card);
 
+        card->link_mode = GELIC_LV1_ETHER_AUTO_NEG;
+
         /* setup interrupt */
         result = lv1_net_set_interrupt_status_indicator(bus_id(card),
                                                         dev_id(card),
@@ -1773,6 +1838,9 @@ static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev)
         struct net_device *netdev0;
         pr_debug("%s: called\n", __func__);
 
+        /* set auto-negotiation */
+        gelic_card_set_link_mode(card, GELIC_LV1_ETHER_AUTO_NEG);
+
 #ifdef CONFIG_GELIC_WIRELESS
         gelic_wl_driver_remove(card);
 #endif
diff --git a/drivers/net/ps3_gelic_net.h b/drivers/net/ps3_gelic_net.h
index a09e4862706a..32521ae5e824 100644
--- a/drivers/net/ps3_gelic_net.h
+++ b/drivers/net/ps3_gelic_net.h
@@ -307,6 +307,8 @@ struct gelic_card {
         atomic_t users;
 
         u64 ether_port_status;
+        int link_mode;
+
         /* original address returned by kzalloc */
         void *unalign;