drivers/net/ethernet/aquantia/atlantic/aq_ptp.h

/* SPDX-License-Identifier: GPL-2.0-only */
/* Atlantic Network Driver
 *
 * Copyright (C) 2014-2019 aQuantia Corporation
 * Copyright (C) 2019-2020 Marvell International Ltd.
 */

/* File aq_ptp.h: Declaration of PTP functions.
 */
#ifndef AQ_PTP_H
#define AQ_PTP_H

#include <linux/net_tstamp.h>

#include "aq_ring.h"

#define PTP_8TC_RING_IDX             8
#define PTP_4TC_RING_IDX            16
#define PTP_HWST_RING_IDX           31

/* Index must to be 8 (8 TCs) or 16 (4 TCs).
 * It depends from Traffic Class mode.
 */
static inline unsigned int aq_ptp_ring_idx(const enum aq_tc_mode tc_mode)
{
	if (tc_mode == AQ_TC_MODE_8TCS)
		return PTP_8TC_RING_IDX;

	return PTP_4TC_RING_IDX;
}

#if IS_REACHABLE(CONFIG_PTP_1588_CLOCK)

/* Common functions */
int aq_ptp_init(struct aq_nic_s *aq_nic, unsigned int idx_vec);

void aq_ptp_unregister(struct aq_nic_s *aq_nic);
void aq_ptp_free(struct aq_nic_s *aq_nic);

int aq_ptp_irq_alloc(struct aq_nic_s *aq_nic);
void aq_ptp_irq_free(struct aq_nic_s *aq_nic);

int aq_ptp_ring_alloc(struct aq_nic_s *aq_nic);
void aq_ptp_ring_free(struct aq_nic_s *aq_nic);

int aq_ptp_ring_init(struct aq_nic_s *aq_nic);
int aq_ptp_ring_start(struct aq_nic_s *aq_nic);
void aq_ptp_ring_stop(struct aq_nic_s *aq_nic);
void aq_ptp_ring_deinit(struct aq_nic_s *aq_nic);

void aq_ptp_service_task(struct aq_nic_s *aq_nic);

void aq_ptp_tm_offset_set(struct aq_nic_s *aq_nic, unsigned int mbps);

void aq_ptp_clock_init(struct aq_nic_s *aq_nic);

/* Traffic processing functions */
int aq_ptp_xmit(struct aq_nic_s *aq_nic, struct sk_buff *skb);
void aq_ptp_tx_hwtstamp(struct aq_nic_s *aq_nic, u64 timestamp);

/* Must be to check available of PTP before call */
void aq_ptp_hwtstamp_config_get(struct aq_ptp_s *aq_ptp,
				struct hwtstamp_config *config);
int aq_ptp_hwtstamp_config_set(struct aq_ptp_s *aq_ptp,
			       struct hwtstamp_config *config);

/* Return either ring is belong to PTP or not*/
bool aq_ptp_ring(struct aq_nic_s *aq_nic, struct aq_ring_s *ring);

u16 aq_ptp_extract_ts(struct aq_nic_s *aq_nic, struct skb_shared_hwtstamps *shhwtstamps, u8 *p,
		      unsigned int len);

struct ptp_clock *aq_ptp_get_ptp_clock(struct aq_ptp_s *aq_ptp);

int aq_ptp_link_change(struct aq_nic_s *aq_nic);

/* PTP ring statistics */
int aq_ptp_get_ring_cnt(struct aq_nic_s *aq_nic, const enum atl_ring_type ring_type);
u64 *aq_ptp_get_stats(struct aq_nic_s *aq_nic, u64 *data);

#else

static inline int aq_ptp_init(struct aq_nic_s *aq_nic, unsigned int idx_vec)
{
	return 0;
}

static inline void aq_ptp_unregister(struct aq_nic_s *aq_nic) {}

static inline void aq_ptp_free(struct aq_nic_s *aq_nic)
{
}

static inline int aq_ptp_irq_alloc(struct aq_nic_s *aq_nic)
{
	return 0;
}

static inline void aq_ptp_irq_free(struct aq_nic_s *aq_nic)
{
}

static inline int aq_ptp_ring_alloc(struct aq_nic_s *aq_nic)
{
	return 0;
}

static inline void aq_ptp_ring_free(struct aq_nic_s *aq_nic) {}

static inline int aq_ptp_ring_init(struct aq_nic_s *aq_nic)
{
	return 0;
}

static inline int aq_ptp_ring_start(struct aq_nic_s *aq_nic)
{
	return 0;
}

static inline void aq_ptp_ring_stop(struct aq_nic_s *aq_nic) {}
static inline void aq_ptp_ring_deinit(struct aq_nic_s *aq_nic) {}
static inline void aq_ptp_service_task(struct aq_nic_s *aq_nic) {}
static inline void aq_ptp_tm_offset_set(struct aq_nic_s *aq_nic,
					unsigned int mbps) {}
static inline void aq_ptp_clock_init(struct aq_nic_s *aq_nic) {}
static inline int aq_ptp_xmit(struct aq_nic_s *aq_nic, struct sk_buff *skb)
{
	return -EOPNOTSUPP;
}

static inline void aq_ptp_tx_hwtstamp(struct aq_nic_s *aq_nic, u64 timestamp) {}
static inline void aq_ptp_hwtstamp_config_get(struct aq_ptp_s *aq_ptp,
					      struct hwtstamp_config *config) {}
static inline int aq_ptp_hwtstamp_config_set(struct aq_ptp_s *aq_ptp,
					     struct hwtstamp_config *config)
{
	return 0;
}

static inline bool aq_ptp_ring(struct aq_nic_s *aq_nic, struct aq_ring_s *ring)
{
	return false;
}

static inline u16 aq_ptp_extract_ts(struct aq_nic_s *aq_nic,
				    struct skb_shared_hwtstamps *shhwtstamps, u8 *p,
				    unsigned int len)
{
	return 0;
}

static inline struct ptp_clock *aq_ptp_get_ptp_clock(struct aq_ptp_s *aq_ptp)
{
	return NULL;
}

static inline int aq_ptp_link_change(struct aq_nic_s *aq_nic)
{
	return 0;
}
#endif

#endif /* AQ_PTP_H */