net: fec: Enable imx6 enet checksum acceleration.

Enables hardware generation of IP header and
protocol specific checksums for transmitted
packets.

Enabled hardware discarding of received packets with
invalid IP header or protocol specific checksums.

The feature is enabled by default but can be
enabled/disabled by ethtool.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Jim Baxter <jim_baxter@mentor.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index eb4372962839..d44f65bac1d4 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -52,6 +52,7 @@
 #define FEC_R_FIFO_RSEM         0x194 /* Receive FIFO section empty threshold */
 #define FEC_R_FIFO_RAEM         0x198 /* Receive FIFO almost empty threshold */
 #define FEC_R_FIFO_RAFL         0x19c /* Receive FIFO almost full threshold */
+#define FEC_RACC                0x1C4 /* Receive Accelerator function */
 #define FEC_MIIGSK_CFGR         0x300 /* MIIGSK Configuration reg */
 #define FEC_MIIGSK_ENR          0x308 /* MIIGSK Enable reg */
 
@@ -164,9 +165,11 @@ struct bufdesc_ex {
 #define BD_ENET_TX_CSL          ((ushort)0x0001)
 #define BD_ENET_TX_STATS        ((ushort)0x03ff)        /* All status bits */
 
-/*enhanced buffer desciptor control/status used by Ethernet transmit*/
+/*enhanced buffer descriptor control/status used by Ethernet transmit*/
 #define BD_ENET_TX_INT          0x40000000
 #define BD_ENET_TX_TS           0x20000000
+#define BD_ENET_TX_PINS         0x10000000
+#define BD_ENET_TX_IINS         0x08000000
 
 
 /* This device has up to three irqs on some platforms */
@@ -190,6 +193,10 @@ struct bufdesc_ex {
 
 #define BD_ENET_RX_INT          0x00800000
 #define BD_ENET_RX_PTP          ((ushort)0x0400)
+#define BD_ENET_RX_ICE          0x00000020
+#define BD_ENET_RX_PCR          0x00000010
+#define FLAG_RX_CSUM_ENABLED    (BD_ENET_RX_ICE | BD_ENET_RX_PCR)
+#define FLAG_RX_CSUM_ERROR      (BD_ENET_RX_ICE | BD_ENET_RX_PCR)
 
 /* The FEC buffer descriptors track the ring buffers.  The rx_bd_base and
  * tx_bd_base always point to the base of the buffer descriptors.  The
@@ -247,6 +254,7 @@ struct fec_enet_private {
         int     pause_flag;
 
         struct  napi_struct napi;
+        int     csum_flags;
 
         struct ptp_clock *ptp_clock;
         struct ptp_clock_info ptp_caps;