drivers: net: vsc9953: Add LAG support

You can now configure LAG on VSC9953's ports using the command:
ethsw [port <port_no>] aggr {[help] | show | <lag_group_no>}

A port must belong to a single LAG. By default, a port
belongs to a LAG equal to the port's number.

For each frame, a hash will be calculated based on
Source/Destination MAC addresses, Source/Destination IP(v4/v6)
addresses, Source/Destination ports. This hash will be used to
select a single egress port from LAG. This also assures
that frames from the same flow will always have the
same egress port.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

include/vsc9953.h

@@ -126,6 +126,7 @@
 #define VSC9953_PORT_CFG_LEARN_AUTO	0x00000100
 #define VSC9953_PORT_CFG_LEARN_CPU	0x00000200
 #define VSC9953_PORT_CFG_LEARN_DROP	0x00000400
+#define VSC9953_PORT_CFG_PORTID_MASK	0x0000003c
 
 /* Macros for vsc9953_qsys_sys.switch_port_mode register */
 #define VSC9953_PORT_ENA		0x00002000
@@ -156,6 +157,19 @@
 /* Macros for vsc9953_ana_ana_tables.mach_data register */
 #define VSC9953_MACHDATA_VID_MASK	0x1fff0000
 
+/* Macros for vsc9953_ana_common.aggr_cfg register */
+#define VSC9953_AC_RND_ENA		0x00000080
+#define VSC9953_AC_DMAC_ENA		0x00000040
+#define VSC9953_AC_SMAC_ENA		0x00000020
+#define VSC9953_AC_IP6_LBL_ENA		0x00000010
+#define VSC9953_AC_IP6_TCPUDP_ENA	0x00000008
+#define VSC9953_AC_IP4_SIPDIP_ENA	0x00000004
+#define VSC9953_AC_IP4_TCPUDP_ENA	0x00000002
+#define VSC9953_AC_MASK			0x000000fe
+
+/* Macros for vsc9953_ana_pgid.port_grp_id[] registers */
+#define VSC9953_PGID_PORT_MASK		0x000003ff
+
 #define VSC9953_MAX_PORTS		10
 #define VSC9953_PORT_CHECK(port)	\
 	(((port) < 0 || (port) >= VSC9953_MAX_PORTS) ? 0 : 1)
@@ -239,6 +253,10 @@ struct vsc9953_ana_ana {
 	u32	port_mode[12];
 };
 
+#define PGID_DST_START		0
+#define PGID_AGGR_START		64
+#define PGID_SRC_START		80
+
 struct vsc9953_ana_pgid {
 	u32	port_grp_id[91];
 };