| 1 | /* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ |
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| 2 | /* |
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| 3 | * DSA driver for: |
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| 4 | * Hirschmann Hellcreek TSN switch. |
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| 5 | * |
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| 6 | * Copyright (C) 2019,2020 Hochschule Offenburg |
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| 7 | * Copyright (C) 2019,2020 Linutronix GmbH |
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| 8 | * Authors: Kurt Kanzenbach <kurt@linutronix.de> |
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| 9 | * Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de> |
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| 10 | */ |
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| 11 | |
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| 12 | #ifndef _HELLCREEK_HWTSTAMP_H_ |
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| 13 | #define _HELLCREEK_HWTSTAMP_H_ |
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| 14 | |
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| 15 | #include <net/dsa.h> |
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| 16 | #include "hellcreek.h" |
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| 17 | |
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| 18 | /* Timestamp Register */ |
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| 19 | #define PR_TS_RX_P1_STATUS_C (0x1d * 2) |
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| 20 | #define PR_TS_RX_P1_DATA_C (0x1e * 2) |
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| 21 | #define PR_TS_TX_P1_STATUS_C (0x1f * 2) |
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| 22 | #define PR_TS_TX_P1_DATA_C (0x20 * 2) |
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| 23 | #define PR_TS_RX_P2_STATUS_C (0x25 * 2) |
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| 24 | #define PR_TS_RX_P2_DATA_C (0x26 * 2) |
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| 25 | #define PR_TS_TX_P2_STATUS_C (0x27 * 2) |
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| 26 | #define PR_TS_TX_P2_DATA_C (0x28 * 2) |
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| 27 | |
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| 28 | #define PR_TS_STATUS_TS_AVAIL BIT(2) |
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| 29 | #define PR_TS_STATUS_TS_LOST BIT(3) |
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| 30 | |
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| 31 | #define SKB_PTP_TYPE(__skb) (*(unsigned int *)((__skb)->cb)) |
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| 32 | |
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| 33 | /* TX_TSTAMP_TIMEOUT: This limits the time spent polling for a TX |
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| 34 | * timestamp. When working properly, hardware will produce a timestamp |
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| 35 | * within 1ms. Software may enounter delays, so the timeout is set |
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| 36 | * accordingly. |
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| 37 | */ |
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| 38 | #define TX_TSTAMP_TIMEOUT msecs_to_jiffies(40) |
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| 39 | |
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| 40 | int hellcreek_port_hwtstamp_set(struct dsa_switch *ds, int port, |
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| 41 | struct ifreq *ifr); |
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| 42 | int hellcreek_port_hwtstamp_get(struct dsa_switch *ds, int port, |
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| 43 | struct ifreq *ifr); |
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| 44 | |
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| 45 | bool hellcreek_port_rxtstamp(struct dsa_switch *ds, int port, |
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| 46 | struct sk_buff *clone, unsigned int type); |
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| 47 | void hellcreek_port_txtstamp(struct dsa_switch *ds, int port, |
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| 48 | struct sk_buff *skb); |
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| 49 | |
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| 50 | int hellcreek_get_ts_info(struct dsa_switch *ds, int port, |
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| 51 | struct ethtool_ts_info *info); |
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| 52 | |
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| 53 | long hellcreek_hwtstamp_work(struct ptp_clock_info *ptp); |
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| 54 | |
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| 55 | int hellcreek_hwtstamp_setup(struct hellcreek *chip); |
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| 56 | void hellcreek_hwtstamp_free(struct hellcreek *chip); |
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| 57 | |
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| 58 | #endif /* _HELLCREEK_HWTSTAMP_H_ */ |
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| 59 | |
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