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authorTan Tee Min <tee.min.tan@intel.com>2021-03-23 19:07:34 +0800
committerDavid S. Miller <davem@davemloft.net>2021-03-24 15:12:36 -0700
commit341f67e424e572bfc034daa534c6fa667533e6a4 (patch)
tree9eb068488d74e90163afebaad00ff84946dbfd18 /include
parentbef32aa8e412b2495503134a3c02139151b3ebfc (diff)
net: stmmac: Add hardware supported cross-timestamp
Cross timestamping is supported on Integrated Ethernet Controller in Intel SoC such as EHL and TGL with Always Running Timer. The hardware cross-timestamp result is made available to applications through the PTP_SYS_OFFSET_PRECISE ioctl which calls stmmac_getcrosststamp(). Device time is stored in the MAC Auxiliary register. The 64-bit System time (ART timestamp) is stored in registers that are only addressable by using MDIO space. Signed-off-by: Tan Tee Min <tee.min.tan@intel.com> Co-developed-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/stmmac.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 10abc80b601e..5134e802f39a 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -186,6 +186,8 @@ struct plat_stmmacenet_data {
void (*exit)(struct platform_device *pdev, void *priv);
struct mac_device_info *(*setup)(void *priv);
int (*clks_config)(void *priv, bool enabled);
+ int (*crosststamp)(ktime_t *device, struct system_counterval_t *system,
+ void *ctx);
void *bsp_priv;
struct clk *stmmac_clk;
struct clk *pclk;
@@ -206,5 +208,7 @@ struct plat_stmmacenet_data {
u8 vlan_fail_q;
unsigned int eee_usecs_rate;
struct pci_dev *pdev;
+ bool has_crossts;
+ int int_snapshot_num;
};
#endif