net: lan743x: Add support for PTP-IO Event Input External Timestamp (extts)

PTP-IOs block provides for time stamping PTP-IO input events.
PTP-IOs are numbered from 0 to 11.
When a PTP-IO is enabled by the corresponding bit in the PTP-IO
Capture Configuration Register, a rising or falling edge,
respectively, will capture the 1588 Local Time Counter
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan743x_main.h

@@ -358,8 +358,18 @@
 #define PTP_GENERAL_CONFIG_RELOAD_ADD_X_(channel)	(BIT((channel) << 2))
 
 #define PTP_INT_STS				(0x0A08)
+#define PTP_INT_IO_FE_MASK_			GENMASK(31, 24)
+#define PTP_INT_IO_FE_SHIFT_			(24)
+#define PTP_INT_IO_FE_SET_(channel)		BIT(24 + (channel))
+#define PTP_INT_IO_RE_MASK_			GENMASK(23, 16)
+#define PTP_INT_IO_RE_SHIFT_			(16)
+#define PTP_INT_IO_RE_SET_(channel)		BIT(16 + (channel))
 #define PTP_INT_EN_SET				(0x0A0C)
+#define PTP_INT_EN_FE_EN_SET_(channel)		BIT(24 + (channel))
+#define PTP_INT_EN_RE_EN_SET_(channel)		BIT(16 + (channel))
 #define PTP_INT_EN_CLR				(0x0A10)
+#define PTP_INT_EN_FE_EN_CLR_(channel)		BIT(24 + (channel))
+#define PTP_INT_EN_RE_EN_CLR_(channel)		BIT(16 + (channel))
 #define PTP_INT_BIT_TX_SWTS_ERR_		BIT(13)
 #define PTP_INT_BIT_TX_TS_			BIT(12)
 #define PTP_INT_BIT_TIMER_B_			BIT(1)
@@ -377,6 +387,16 @@
 #define PTP_CLOCK_TARGET_NS_X(channel)		(0x0A34 + ((channel) << 4))
 #define PTP_CLOCK_TARGET_RELOAD_SEC_X(channel)	(0x0A38 + ((channel) << 4))
 #define PTP_CLOCK_TARGET_RELOAD_NS_X(channel)	(0x0A3C + ((channel) << 4))
+#define PTP_LTC_SET_SEC_HI			(0x0A50)
+#define PTP_LTC_SET_SEC_HI_SEC_47_32_MASK_	GENMASK(15, 0)
+#define PTP_VERSION				(0x0A54)
+#define PTP_VERSION_TX_UP_MASK_			GENMASK(31, 24)
+#define PTP_VERSION_TX_LO_MASK_			GENMASK(23, 16)
+#define PTP_VERSION_RX_UP_MASK_			GENMASK(15, 8)
+#define PTP_VERSION_RX_LO_MASK_			GENMASK(7, 0)
+#define PTP_IO_SEL				(0x0A58)
+#define PTP_IO_SEL_MASK_			GENMASK(10, 8)
+#define PTP_IO_SEL_SHIFT_			(8)
 #define PTP_LATENCY				(0x0A5C)
 #define PTP_LATENCY_TX_SET_(tx_latency)		(((u32)(tx_latency)) << 16)
 #define PTP_LATENCY_RX_SET_(rx_latency)		\
@@ -401,6 +421,59 @@
 #define PTP_TX_MSG_HEADER_MSG_TYPE_		(0x000F0000)
 #define PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_	(0x00000000)
 
+#define PTP_TX_CAP_INFO				(0x0AB8)
+#define PTP_TX_CAP_INFO_TX_CH_MASK_		GENMASK(1, 0)
+#define PTP_TX_DOMAIN				(0x0ABC)
+#define PTP_TX_DOMAIN_MASK_			GENMASK(23, 16)
+#define PTP_TX_DOMAIN_RANGE_EN_			BIT(15)
+#define PTP_TX_DOMAIN_RANGE_MASK_		GENMASK(7, 0)
+#define PTP_TX_SDOID				(0x0AC0)
+#define PTP_TX_SDOID_MASK_			GENMASK(23, 16)
+#define PTP_TX_SDOID_RANGE_EN_			BIT(15)
+#define PTP_TX_SDOID_11_0_MASK_			GENMASK(7, 0)
+#define PTP_IO_CAP_CONFIG			(0x0AC4)
+#define PTP_IO_CAP_CONFIG_LOCK_FE_(channel)	BIT(24 + (channel))
+#define PTP_IO_CAP_CONFIG_LOCK_RE_(channel)	BIT(16 + (channel))
+#define PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel)	BIT(8 + (channel))
+#define PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel)	BIT(0 + (channel))
+#define PTP_IO_RE_LTC_SEC_CAP_X			(0x0AC8)
+#define PTP_IO_RE_LTC_NS_CAP_X			(0x0ACC)
+#define PTP_IO_FE_LTC_SEC_CAP_X			(0x0AD0)
+#define PTP_IO_FE_LTC_NS_CAP_X			(0x0AD4)
+#define PTP_IO_EVENT_OUTPUT_CFG			(0x0AD8)
+#define PTP_IO_EVENT_OUTPUT_CFG_SEL_(channel)	BIT(16 + (channel))
+#define PTP_IO_EVENT_OUTPUT_CFG_EN_(channel)	BIT(0 + (channel))
+#define PTP_IO_PIN_CFG				(0x0ADC)
+#define PTP_IO_PIN_CFG_OBUF_TYPE_(channel)	BIT(0 + (channel))
+#define PTP_LTC_RD_SEC_HI			(0x0AF0)
+#define PTP_LTC_RD_SEC_HI_SEC_47_32_MASK_	GENMASK(15, 0)
+#define PTP_LTC_RD_SEC_LO			(0x0AF4)
+#define PTP_LTC_RD_NS				(0x0AF8)
+#define PTP_LTC_RD_NS_29_0_MASK_		GENMASK(29, 0)
+#define PTP_LTC_RD_SUBNS			(0x0AFC)
+#define PTP_RX_USER_MAC_HI			(0x0B00)
+#define PTP_RX_USER_MAC_HI_47_32_MASK_		GENMASK(15, 0)
+#define PTP_RX_USER_MAC_LO			(0x0B04)
+#define PTP_RX_USER_IP_ADDR_0			(0x0B20)
+#define PTP_RX_USER_IP_ADDR_1			(0x0B24)
+#define PTP_RX_USER_IP_ADDR_2			(0x0B28)
+#define PTP_RX_USER_IP_ADDR_3			(0x0B2C)
+#define PTP_RX_USER_IP_MASK_0			(0x0B30)
+#define PTP_RX_USER_IP_MASK_1			(0x0B34)
+#define PTP_RX_USER_IP_MASK_2			(0x0B38)
+#define PTP_RX_USER_IP_MASK_3			(0x0B3C)
+#define PTP_TX_USER_MAC_HI			(0x0B40)
+#define PTP_TX_USER_MAC_HI_47_32_MASK_		GENMASK(15, 0)
+#define PTP_TX_USER_MAC_LO			(0x0B44)
+#define PTP_TX_USER_IP_ADDR_0			(0x0B60)
+#define PTP_TX_USER_IP_ADDR_1			(0x0B64)
+#define PTP_TX_USER_IP_ADDR_2			(0x0B68)
+#define PTP_TX_USER_IP_ADDR_3			(0x0B6C)
+#define PTP_TX_USER_IP_MASK_0			(0x0B70)
+#define PTP_TX_USER_IP_MASK_1			(0x0B74)
+#define PTP_TX_USER_IP_MASK_2			(0x0B78)
+#define PTP_TX_USER_IP_MASK_3			(0x0B7C)
+
 #define DMAC_CFG				(0xC00)
 #define DMAC_CFG_COAL_EN_			BIT(16)
 #define DMAC_CFG_CH_ARB_SEL_RX_HIGH_		(0x00000000)

drivers/net/ethernet/microchip/lan743x_ptp.h

@@ -18,6 +18,9 @@
  */
 #define LAN743X_PTP_N_EVENT_CHAN	2
 #define LAN743X_PTP_N_PEROUT		LAN743X_PTP_N_EVENT_CHAN
+#define LAN743X_PTP_N_EXTTS		4
+#define LAN743X_PTP_N_PPS		0
+#define PCI11X1X_PTP_IO_MAX_CHANNELS	8
 
 struct lan743x_adapter;
 
@@ -60,6 +63,11 @@ struct lan743x_ptp_perout {
 	int  gpio_pin;	/* GPIO pin where output appears */
 };
 
+struct lan743x_extts {
+	int flags;
+	struct timespec64 ts;
+};
+
 struct lan743x_ptp {
 	int flags;
 
@@ -72,6 +80,7 @@ struct lan743x_ptp {
 
 	unsigned long used_event_ch;
 	struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT];
+	struct lan743x_extts extts[LAN743X_PTP_N_EXTTS];
 
 	bool leds_multiplexed;
 	bool led_enabled[LAN7430_N_LED];