fmd: memac: add tx_fifo_sections register initialization

B4/T4 rev2 introduced two new registers in memac block
named: RX_FIFO_SECTIONS and TX_FIFO_SECTIONS
TX_FIFO_SECTIONS[TX_AVAIL] field requires a specific (non default)
init value when working with 10g interface (0x19)

Change-Id: Ic577e24d10031b2f2f1697006a6d5be52db19f4e
Signed-off-by: Mandy Lavi <mandy.lavi@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/6882
Reviewed-by: Haiying Wang <Haiying.Wang@freescale.com>
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Thomas Trefny <Tom.Trefny@freescale.com>
(cherry picked from commit 2818e16b8a8c4f49ef8c7438505f0dc952b3d46f)
Change-Id: Ic577e24d10031b2f2f1697006a6d5be52db19f4e
Reviewed-on: http://git.am.freescale.net:8181/7386
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
Tested-by: Jose Rivera <German.Rivera@freescale.com>
(cherry picked from commit fc1388287f2ad1566be2b7c8c6897a277e96ca98)
Change-Id: Ic577e24d10031b2f2f1697006a6d5be52db19f4e
Reviewed-on: http://git.am.freescale.net:8181/9382
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
Tested-by: Jose Rivera <German.Rivera@freescale.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/net/ethernet/freescale/fman/Peripherals/FM/MAC/fman_memac.c b/drivers/net/ethernet/freescale/fman/Peripherals/FM/MAC/fman_memac.c
index 145fb03..64295c5 100644
--- a/drivers/net/ethernet/freescale/fman/Peripherals/FM/MAC/fman_memac.c
+++ b/drivers/net/ethernet/freescale/fman/Peripherals/FM/MAC/fman_memac.c
@@ -209,7 +209,16 @@ int fman_memac_init(struct memac_regs *regs,
             tmp |= IF_MODE_RGMII | IF_MODE_RGMII_AUTO;
     }
     iowrite32be(tmp, &regs->if_mode);
-
+    
+    /* from RM: For 10G rate mac tx_fifo_sections[TX_AVAIL] should be 0x19 */
+    if (enet_interface == E_ENET_IF_XGMII || 
+        enet_interface == E_ENET_IF_XFI) {
+        tmp = ioread32be(&regs->tx_fifo_sections);
+        tmp &= 0xffff0000;
+        tmp |= 0x00000019;
+        iowrite32be(tmp, &regs->tx_fifo_sections);
+    }
+    
     /* clear all pending events and set-up interrupts */
     fman_memac_ack_event(regs, 0xffffffff);
     fman_memac_set_exception(regs, exceptions, TRUE);