drivers/net/dsa/sja1105/sja1105_ptp.h

Source file repositories/reference/linux-study-clean/drivers/net/dsa/sja1105/sja1105_ptp.h

File Facts

System
Linux kernel
Corpus path
drivers/net/dsa/sja1105/sja1105_ptp.h
Extension
.h
Size
5502 bytes
Lines
211
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct sja1105_ptp_cmd {
	u64 startptpcp;		/* start toggling PTP_CLK pin */
	u64 stopptpcp;		/* stop toggling PTP_CLK pin */
	u64 ptpstrtsch;		/* start schedule */
	u64 ptpstopsch;		/* stop schedule */
	u64 resptp;		/* reset */
	u64 corrclk4ts;		/* use the corrected clock for timestamps */
	u64 ptpclkadd;		/* enum sja1105_ptp_clk_mode */
};

struct sja1105_ptp_data {
	struct timer_list extts_timer;
	/* Used only on SJA1105 to reconstruct partial timestamps */
	struct sk_buff_head skb_rxtstamp_queue;
	/* Used on SJA1110 where meta frames are generated only for
	 * 2-step TX timestamps
	 */
	struct sk_buff_head skb_txtstamp_queue;
	struct ptp_clock_info caps;
	struct ptp_clock *clock;
	struct sja1105_ptp_cmd cmd;
	/* Serializes all operations on the PTP hardware clock */
	struct mutex lock;
	bool extts_enabled;
	u64 ptpsyncts;
};

int sja1105_ptp_clock_register(struct dsa_switch *ds);

void sja1105_ptp_clock_unregister(struct dsa_switch *ds);

void sja1105et_ptp_cmd_packing(u8 *buf, struct sja1105_ptp_cmd *cmd,
			       enum packing_op op);

void sja1105pqrs_ptp_cmd_packing(u8 *buf, struct sja1105_ptp_cmd *cmd,
				 enum packing_op op);

int sja1105_get_ts_info(struct dsa_switch *ds, int port,
			struct kernel_ethtool_ts_info *ts);

void sja1105_ptp_txtstamp_skb(struct dsa_switch *ds, int slot,
			      struct sk_buff *clone);

bool sja1105_port_rxtstamp(struct dsa_switch *ds, int port,
			   struct sk_buff *skb, unsigned int type);

void sja1105_port_txtstamp(struct dsa_switch *ds, int port,
			   struct sk_buff *skb);

int sja1105_hwtstamp_get(struct dsa_switch *ds, int port,
			 struct kernel_hwtstamp_config *config);

int sja1105_hwtstamp_set(struct dsa_switch *ds, int port,
			 struct kernel_hwtstamp_config *config,
			 struct netlink_ext_ack *extack);

int __sja1105_ptp_gettimex(struct dsa_switch *ds, u64 *ns,
			   struct ptp_system_timestamp *sts);

int __sja1105_ptp_settime(struct dsa_switch *ds, u64 ns,
			  struct ptp_system_timestamp *ptp_sts);

int __sja1105_ptp_adjtime(struct dsa_switch *ds, s64 delta);

int sja1105_ptp_commit(struct dsa_switch *ds, struct sja1105_ptp_cmd *cmd,
		       sja1105_spi_rw_mode_t rw);

bool sja1105_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb);
bool sja1110_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb);
void sja1110_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb);

void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port, u8 ts_id,
				 enum sja1110_meta_tstamp dir, u64 tstamp);

#else

struct sja1105_ptp_cmd;

/* Structures cannot be empty in C. Bah!
 * Keep the mutex as the only element, which is a bit more difficult to
 * refactor out of sja1105_main.c anyway.
 */
struct sja1105_ptp_data {
	struct mutex lock;
};

static inline int sja1105_ptp_clock_register(struct dsa_switch *ds)
{
	return 0;
}

Annotation

Implementation Notes