59 lines · c
1/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */2/*3 * DSA driver for:4 * Hirschmann Hellcreek TSN switch.5 *6 * Copyright (C) 2019,2020 Hochschule Offenburg7 * Copyright (C) 2019,2020 Linutronix GmbH8 * Authors: Kurt Kanzenbach <kurt@linutronix.de>9 * Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>10 */11 12#ifndef _HELLCREEK_HWTSTAMP_H_13#define _HELLCREEK_HWTSTAMP_H_14 15#include <net/dsa.h>16#include "hellcreek.h"17 18/* Timestamp Register */19#define PR_TS_RX_P1_STATUS_C (0x1d * 2)20#define PR_TS_RX_P1_DATA_C (0x1e * 2)21#define PR_TS_TX_P1_STATUS_C (0x1f * 2)22#define PR_TS_TX_P1_DATA_C (0x20 * 2)23#define PR_TS_RX_P2_STATUS_C (0x25 * 2)24#define PR_TS_RX_P2_DATA_C (0x26 * 2)25#define PR_TS_TX_P2_STATUS_C (0x27 * 2)26#define PR_TS_TX_P2_DATA_C (0x28 * 2)27 28#define PR_TS_STATUS_TS_AVAIL BIT(2)29#define PR_TS_STATUS_TS_LOST BIT(3)30 31#define SKB_PTP_TYPE(__skb) (*(unsigned int *)((__skb)->cb))32 33/* TX_TSTAMP_TIMEOUT: This limits the time spent polling for a TX34 * timestamp. When working properly, hardware will produce a timestamp35 * within 1ms. Software may enounter delays, so the timeout is set36 * accordingly.37 */38#define TX_TSTAMP_TIMEOUT msecs_to_jiffies(40)39 40int hellcreek_port_hwtstamp_set(struct dsa_switch *ds, int port,41 struct ifreq *ifr);42int hellcreek_port_hwtstamp_get(struct dsa_switch *ds, int port,43 struct ifreq *ifr);44 45bool hellcreek_port_rxtstamp(struct dsa_switch *ds, int port,46 struct sk_buff *clone, unsigned int type);47void hellcreek_port_txtstamp(struct dsa_switch *ds, int port,48 struct sk_buff *skb);49 50int hellcreek_get_ts_info(struct dsa_switch *ds, int port,51 struct kernel_ethtool_ts_info *info);52 53long hellcreek_hwtstamp_work(struct ptp_clock_info *ptp);54 55int hellcreek_hwtstamp_setup(struct hellcreek *chip);56void hellcreek_hwtstamp_free(struct hellcreek *chip);57 58#endif /* _HELLCREEK_HWTSTAMP_H_ */59