hwtstamp.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * Marvell 88E6xxx Switch hardware timestamping support
  4 *
  5 * Copyright (c) 2008 Marvell Semiconductor
  6 *
  7 * Copyright (c) 2017 National Instruments
  8 *      Erik Hons <erik.hons@ni.com>
  9 *      Brandon Streiff <brandon.streiff@ni.com>
 10 *      Dane Wagner <dane.wagner@ni.com>
 11 */
 12
 13#ifndef _MV88E6XXX_HWTSTAMP_H
 14#define _MV88E6XXX_HWTSTAMP_H
 15
 16#include "chip.h"
 17
 18/* Global 6352 PTP registers */
 19/* Offset 0x00: PTP EtherType */
 20#define MV88E6XXX_PTP_ETHERTYPE	0x00
 21
 22/* Offset 0x01: Message Type Timestamp Enables */
 23#define MV88E6XXX_PTP_MSGTYPE			0x01
 24#define MV88E6XXX_PTP_MSGTYPE_SYNC		0x0001
 25#define MV88E6XXX_PTP_MSGTYPE_DELAY_REQ		0x0002
 26#define MV88E6XXX_PTP_MSGTYPE_PDLAY_REQ		0x0004
 27#define MV88E6XXX_PTP_MSGTYPE_PDLAY_RES		0x0008
 28#define MV88E6XXX_PTP_MSGTYPE_ALL_EVENT		0x000f
 29
 30/* Offset 0x02: Timestamp Arrival Capture Pointers */
 31#define MV88E6XXX_PTP_TS_ARRIVAL_PTR	0x02
 32
 33/* Offset 0x05: PTP Global Configuration */
 34#define MV88E6165_PTP_CFG			0x05
 35#define MV88E6165_PTP_CFG_TSPEC_MASK		0xf000
 36#define MV88E6165_PTP_CFG_DISABLE_TS_OVERWRITE	BIT(1)
 37#define MV88E6165_PTP_CFG_DISABLE_PTP		BIT(0)
 38
 39/* Offset 0x07: PTP Global Configuration */
 40#define MV88E6341_PTP_CFG			0x07
 41#define MV88E6341_PTP_CFG_UPDATE		0x8000
 42#define MV88E6341_PTP_CFG_IDX_MASK		0x7f00
 43#define MV88E6341_PTP_CFG_DATA_MASK		0x00ff
 44#define MV88E6341_PTP_CFG_MODE_IDX		0x0
 45#define MV88E6341_PTP_CFG_MODE_TS_AT_PHY	0x00
 46#define MV88E6341_PTP_CFG_MODE_TS_AT_MAC	0x80
 47
 48/* Offset 0x08: PTP Interrupt Status */
 49#define MV88E6XXX_PTP_IRQ_STATUS	0x08
 50
 51/* Per-Port 6352 PTP Registers */
 52/* Offset 0x00: PTP Configuration 0 */
 53#define MV88E6XXX_PORT_PTP_CFG0				0x00
 54#define MV88E6XXX_PORT_PTP_CFG0_TSPEC_SHIFT		12
 55#define MV88E6XXX_PORT_PTP_CFG0_TSPEC_MASK		0xf000
 56#define MV88E6XXX_PORT_PTP_CFG0_TSPEC_1588		0x0000
 57#define MV88E6XXX_PORT_PTP_CFG0_TSPEC_8021AS		0x1000
 58#define MV88E6XXX_PORT_PTP_CFG0_DISABLE_TSPEC_MATCH	0x0800
 59#define MV88E6XXX_PORT_PTP_CFG0_DISABLE_OVERWRITE	0x0002
 60#define MV88E6XXX_PORT_PTP_CFG0_DISABLE_PTP		0x0001
 61
 62/* Offset 0x01: PTP Configuration 1 */
 63#define MV88E6XXX_PORT_PTP_CFG1	0x01
 64
 65/* Offset 0x02: PTP Configuration 2 */
 66#define MV88E6XXX_PORT_PTP_CFG2				0x02
 67#define MV88E6XXX_PORT_PTP_CFG2_EMBED_ARRIVAL		0x1000
 68#define MV88E6XXX_PORT_PTP_CFG2_DEP_IRQ_EN		0x0002
 69#define MV88E6XXX_PORT_PTP_CFG2_ARR_IRQ_EN		0x0001
 70
 71/* Offset 0x03: PTP LED Configuration */
 72#define MV88E6XXX_PORT_PTP_LED_CFG	0x03
 73
 74/* Offset 0x08: PTP Arrival 0 Status */
 75#define MV88E6XXX_PORT_PTP_ARR0_STS	0x08
 76
 77/* Offset 0x09/0x0A: PTP Arrival 0 Time */
 78#define MV88E6XXX_PORT_PTP_ARR0_TIME_LO	0x09
 79#define MV88E6XXX_PORT_PTP_ARR0_TIME_HI	0x0a
 80
 81/* Offset 0x0B: PTP Arrival 0 Sequence ID */
 82#define MV88E6XXX_PORT_PTP_ARR0_SEQID	0x0b
 83
 84/* Offset 0x0C: PTP Arrival 1 Status */
 85#define MV88E6XXX_PORT_PTP_ARR1_STS	0x0c
 86
 87/* Offset 0x0D/0x0E: PTP Arrival 1 Time */
 88#define MV88E6XXX_PORT_PTP_ARR1_TIME_LO	0x0d
 89#define MV88E6XXX_PORT_PTP_ARR1_TIME_HI	0x0e
 90
 91/* Offset 0x0F: PTP Arrival 1 Sequence ID */
 92#define MV88E6XXX_PORT_PTP_ARR1_SEQID	0x0f
 93
 94/* Offset 0x10: PTP Departure Status */
 95#define MV88E6XXX_PORT_PTP_DEP_STS	0x10
 96
 97/* Offset 0x11/0x12: PTP Deperture Time */
 98#define MV88E6XXX_PORT_PTP_DEP_TIME_LO	0x11
 99#define MV88E6XXX_PORT_PTP_DEP_TIME_HI	0x12
100
101/* Offset 0x13: PTP Departure Sequence ID */
102#define MV88E6XXX_PORT_PTP_DEP_SEQID	0x13
103
104/* Status fields for arrival and depature timestamp status registers */
105#define MV88E6XXX_PTP_TS_STATUS_MASK		0x0006
106#define MV88E6XXX_PTP_TS_STATUS_NORMAL		0x0000
107#define MV88E6XXX_PTP_TS_STATUS_OVERWITTEN	0x0002
108#define MV88E6XXX_PTP_TS_STATUS_DISCARDED	0x0004
109#define MV88E6XXX_PTP_TS_VALID			0x0001
110
111#ifdef CONFIG_NET_DSA_MV88E6XXX_PTP
112
113int mv88e6xxx_port_hwtstamp_set(struct dsa_switch *ds, int port,
114				struct kernel_hwtstamp_config *cfg,
115				struct netlink_ext_ack *extack);
116int mv88e6xxx_port_hwtstamp_get(struct dsa_switch *ds, int port,
117				struct kernel_hwtstamp_config *cfg);
118
119bool mv88e6xxx_port_rxtstamp(struct dsa_switch *ds, int port,
120			     struct sk_buff *clone, unsigned int type);
121void mv88e6xxx_port_txtstamp(struct dsa_switch *ds, int port,
122			     struct sk_buff *skb);
123
124int mv88e6xxx_get_ts_info(struct dsa_switch *ds, int port,
125			  struct kernel_ethtool_ts_info *info);
126
127long mv88e6xxx_hwtstamp_work(struct ptp_clock_info *ptp);
128int mv88e6xxx_hwtstamp_setup(struct mv88e6xxx_chip *chip);
129void mv88e6xxx_hwtstamp_free(struct mv88e6xxx_chip *chip);
130int mv88e6352_hwtstamp_port_enable(struct mv88e6xxx_chip *chip, int port);
131int mv88e6352_hwtstamp_port_disable(struct mv88e6xxx_chip *chip, int port);
132int mv88e6165_global_enable(struct mv88e6xxx_chip *chip);
133int mv88e6165_global_disable(struct mv88e6xxx_chip *chip);
134
135#else /* !CONFIG_NET_DSA_MV88E6XXX_PTP */
136
137static inline int
138mv88e6xxx_port_hwtstamp_set(struct dsa_switch *ds, int port,
139			    struct kernel_hwtstamp_config *config,
140			    struct netlink_ext_ack *extack)
141{
142	return -EOPNOTSUPP;
143}
144
145static inline int
146mv88e6xxx_port_hwtstamp_get(struct dsa_switch *ds, int port,
147			    struct kernel_hwtstamp_config *config)
148{
149	return -EOPNOTSUPP;
150}
151
152static inline bool mv88e6xxx_port_rxtstamp(struct dsa_switch *ds, int port,
153					   struct sk_buff *clone,
154					   unsigned int type)
155{
156	return false;
157}
158
159static inline void mv88e6xxx_port_txtstamp(struct dsa_switch *ds, int port,
160					   struct sk_buff *skb)
161{
162}
163
164static inline int mv88e6xxx_get_ts_info(struct dsa_switch *ds, int port,
165					struct kernel_ethtool_ts_info *info)
166{
167	return -EOPNOTSUPP;
168}
169
170static inline int mv88e6xxx_hwtstamp_setup(struct mv88e6xxx_chip *chip)
171{
172	return 0;
173}
174
175static inline void mv88e6xxx_hwtstamp_free(struct mv88e6xxx_chip *chip)
176{
177}
178
179#endif /* CONFIG_NET_DSA_MV88E6XXX_PTP */
180
181#endif /* _MV88E6XXX_HWTSTAMP_H */