gianfar: Add hardware RX timestamping support
The device is configured to insert hardware timestamps into all
received packets. The RX timestamps are extracted from the padding
alingment bytes during the clean_rx_ring operation and copied into the
skb_shared_hwtstamps struct of the skb. This extraction only happens if
the rx_filter was set to something else than HWTSTAMP_FILTER_NONE with
the SIOCSHWTSTAMP ioctl command.
Hardware timestamping is only supported for eTSEC devices. To indicate
device support the new FSL_GIANFAR_DEV_HAS_TIMER flag was introduced.
Signed-off-by: Manfred Rudigier <manfred.rudigier@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 17d25e7..1ea287c 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -262,6 +262,7 @@
#define next_bd(bdp, base, ring_size) skip_bd(bdp, 1, base, ring_size)
+#define RCTRL_TS_ENABLE 0x01000000
#define RCTRL_PAL_MASK 0x001f0000
#define RCTRL_VLEX 0x00002000
#define RCTRL_FILREN 0x00001000
@@ -885,6 +886,7 @@
#define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET 0x00000100
#define FSL_GIANFAR_DEV_HAS_BD_STASHING 0x00000200
#define FSL_GIANFAR_DEV_HAS_BUF_STASHING 0x00000400
+#define FSL_GIANFAR_DEV_HAS_TIMER 0x00000800
#if (MAXGROUPS == 2)
#define DEFAULT_MAPPING 0xAA
@@ -1100,6 +1102,9 @@
/* Network Statistics */
struct gfar_extra_stats extra_stats;
+
+ /* HW time stamping enabled flag */
+ int hwts_rx_en;
};
extern unsigned int ftp_rqfpr[MAX_FILER_IDX + 1];