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