Fman/mEMAC: mEMAC fix for 10G MAC and PHY

1. use Payload length check disable when enable MAC;
2. add XGMII support for setting MAC interface mode;
3. only enable auto negotiation for Non-XGMII mode;
4. return 0xffff if clause 22 is used to read 10G phy_id;

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Acked-By: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: York Sun <yorksun@freescale.com>

arch/powerpc/include/asm/fsl_memac.h

@@ -159,6 +159,7 @@ struct memac {
 #define MEMAC_CMD_CFG_RX_EN		0x00000002 /* MAC Rx path enable */
 #define MEMAC_CMD_CFG_TX_EN		0x00000001 /* MAC Tx path enable */
 #define MEMAC_CMD_CFG_RXTX_EN	(MEMAC_CMD_CFG_RX_EN | MEMAC_CMD_CFG_TX_EN)
+#define MEMAC_CMD_CFG_NO_LEN_CHK 0x20000 /* Payload length check disable */
 
 /* HASHTABLE_CTRL - Hashtable control register */
 #define HASHTABLE_CTRL_MCAST_EN	0x00000200 /* enable mulitcast Rx hash */

drivers/net/fm/memac.c

@@ -37,7 +37,8 @@ static void memac_enable_mac(struct fsl_enet_mac *mac)
 {
 	struct memac *regs = mac->base;
 
-	setbits_be32(&regs->command_config, MEMAC_CMD_CFG_RXTX_EN);
+	setbits_be32(&regs->command_config,
+		     MEMAC_CMD_CFG_RXTX_EN | MEMAC_CMD_CFG_NO_LEN_CHK);
 }
 
 static void memac_disable_mac(struct fsl_enet_mac *mac)
@@ -93,11 +94,16 @@ static void memac_set_interface_mode(struct fsl_enet_mac *mac,
 		if_mode &= ~IF_MODE_MASK;
 		if_mode |= (IF_MODE_GMII);
 		break;
+	case PHY_INTERFACE_MODE_XGMII:
+		if_mode &= ~IF_MODE_MASK;
+		if_mode |= IF_MODE_XGMII;
+		break;
 	default:
 		break;
 	}
-	/* Enable automatic speed selection */
-	if_mode |= IF_MODE_EN_AUTO;
+	/* Enable automatic speed selection for Non-XGMII */
+	if (type != PHY_INTERFACE_MODE_XGMII)
+		if_mode |= IF_MODE_EN_AUTO;
 
 	if (type == PHY_INTERFACE_MODE_RGMII) {
 		if_mode &= ~IF_MODE_EN_AUTO;

drivers/net/fm/memac_phy.c

@@ -71,6 +71,8 @@ int memac_mdio_read(struct mii_dev *bus, int port_addr, int dev_addr,
 	u32 c45 = 1;
 
 	if (dev_addr == MDIO_DEVAD_NONE) {
+		if (!strcmp(bus->name, DEFAULT_FM_TGEC_MDIO_NAME))
+			return 0xffff;
 		c45 = 0; /* clause 22 */
 		dev_addr = regnum & 0x1f;
 		clrbits_be32(&regs->mdio_stat, MDIO_STAT_ENC);