bnx2x: half duplex support added for several boards

From: Yaniv Rosner <yaniv.rosner@broadcom.com>

Several boards require an additional HW bit written in-order to enable
half duplex.

Signed-off-by: Yaniv Rosner <yaniv.rosner@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 2102ad593c14..e7b0baf873b6 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -1612,6 +1612,9 @@ static void bnx2x_umac_enable(struct link_params *params,
         if (!(vars->flow_ctrl & BNX2X_FLOW_CTRL_RX))
                 val |= UMAC_COMMAND_CONFIG_REG_PAUSE_IGNORE;
 
+        if (vars->duplex == DUPLEX_HALF)
+                val |= UMAC_COMMAND_CONFIG_REG_HD_ENA;
+
         REG_WR(bp, umac_base + UMAC_REG_COMMAND_CONFIG, val);
         udelay(50);
 
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
index c95d9dcac6df..2feaca52d70c 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
@@ -4812,6 +4812,7 @@
    The fields are: [4:0] - tail pointer; 10:5] - Link List size; 15:11] -
    header pointer. */
 #define UCM_REG_XX_TABLE                                         0xe0300
+#define UMAC_COMMAND_CONFIG_REG_HD_ENA                           (0x1<<10)
 #define UMAC_COMMAND_CONFIG_REG_IGNORE_TX_PAUSE                  (0x1<<28)
 #define UMAC_COMMAND_CONFIG_REG_LOOP_ENA                         (0x1<<15)
 #define UMAC_COMMAND_CONFIG_REG_NO_LGTH_CHECK                    (0x1<<24)