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/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
/*
* DSA driver for:
* Hirschmann Hellcreek TSN switch.
*
* Copyright (C) 2019,2020 Hochschule Offenburg
* Copyright (C) 2019,2020 Linutronix GmbH
* Authors: Kurt Kanzenbach <kurt@linutronix.de>
* Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
*/
#ifndef _HELLCREEK_HWTSTAMP_H_
#define _HELLCREEK_HWTSTAMP_H_
#include <net/dsa.h>
#include "hellcreek.h"
/* Timestamp Register */
#define PR_TS_RX_P1_STATUS_C (0x1d * 2)
#define PR_TS_RX_P1_DATA_C (0x1e * 2)
#define PR_TS_TX_P1_STATUS_C (0x1f * 2)
#define PR_TS_TX_P1_DATA_C (0x20 * 2)
#define PR_TS_RX_P2_STATUS_C (0x25 * 2)
#define PR_TS_RX_P2_DATA_C (0x26 * 2)
#define PR_TS_TX_P2_STATUS_C (0x27 * 2)
#define PR_TS_TX_P2_DATA_C (0x28 * 2)
#define PR_TS_STATUS_TS_AVAIL BIT(2)
#define PR_TS_STATUS_TS_LOST BIT(3)
#define SKB_PTP_TYPE(__skb) (*(unsigned int *)((__skb)->cb))
/* TX_TSTAMP_TIMEOUT: This limits the time spent polling for a TX
* timestamp. When working properly, hardware will produce a timestamp
* within 1ms. Software may enounter delays, so the timeout is set
* accordingly.
*/
#define TX_TSTAMP_TIMEOUT msecs_to_jiffies(40)
int hellcreek_port_hwtstamp_set(struct dsa_switch *ds, int port,
struct ifreq *ifr);
int hellcreek_port_hwtstamp_get(struct dsa_switch *ds, int port,
struct ifreq *ifr);
bool hellcreek_port_rxtstamp(struct dsa_switch *ds, int port,
struct sk_buff *clone, unsigned int type);
bool hellcreek_port_txtstamp(struct dsa_switch *ds, int port,
struct sk_buff *clone, unsigned int type);
int hellcreek_get_ts_info(struct dsa_switch *ds, int port,
struct ethtool_ts_info *info);
long hellcreek_hwtstamp_work(struct ptp_clock_info *ptp);
int hellcreek_hwtstamp_setup(struct hellcreek *chip);
void hellcreek_hwtstamp_free(struct hellcreek *chip);
#endif /* _HELLCREEK_HWTSTAMP_H_ */
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