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 Offenburg 7 * Copyright (C) 2019,2020 Linutronix GmbH 8 * 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 TX 34 * timestamp. When working properly, hardware will produce a timestamp 35 * within 1ms. Software may enounter delays, so the timeout is set 36 * accordingly. 37 */ 38 #define TX_TSTAMP_TIMEOUT msecs_to_jiffies(40) 39 40 int hellcreek_port_hwtstamp_set(struct dsa_switch *ds, int port, 41 struct kernel_hwtstamp_config *config, 42 struct netlink_ext_ack *extack); 43 int hellcreek_port_hwtstamp_get(struct dsa_switch *ds, int port, 44 struct kernel_hwtstamp_config *config); 45 46 bool hellcreek_port_rxtstamp(struct dsa_switch *ds, int port, 47 struct sk_buff *clone, unsigned int type); 48 void hellcreek_port_txtstamp(struct dsa_switch *ds, int port, 49 struct sk_buff *skb); 50 51 int hellcreek_get_ts_info(struct dsa_switch *ds, int port, 52 struct kernel_ethtool_ts_info *info); 53 54 long hellcreek_hwtstamp_work(struct ptp_clock_info *ptp); 55 56 int hellcreek_hwtstamp_setup(struct hellcreek *chip); 57 void hellcreek_hwtstamp_free(struct hellcreek *chip); 58 59 #endif /* _HELLCREEK_HWTSTAMP_H_ */ 60