lan743x_ptp.h

  1/* SPDX-License-Identifier: GPL-2.0+ */
  2/* Copyright (C) 2018 Microchip Technology Inc. */
  3
  4#ifndef _LAN743X_PTP_H
  5#define _LAN743X_PTP_H
  6
  7#include "linux/ptp_clock_kernel.h"
  8#include "linux/netdevice.h"
  9
 10#define LAN7430_N_LED			4
 11#define LAN7430_N_GPIO			4	/* multiplexed with PHY LEDs */
 12#define LAN7431_N_GPIO			12
 13
 14#define LAN743X_PTP_N_GPIO		LAN7431_N_GPIO
 15
 16/* the number of periodic outputs is limited by number of
 17 * PTP clock event channels
 18 */
 19#define LAN743X_PTP_N_EVENT_CHAN	2
 20#define LAN743X_PTP_N_PEROUT		LAN743X_PTP_N_EVENT_CHAN
 21#define PCI11X1X_PTP_IO_MAX_CHANNELS	8
 22#define LAN743X_PTP_N_EXTTS		PCI11X1X_PTP_IO_MAX_CHANNELS
 23#define LAN743X_PTP_N_PPS		0
 24#define PTP_CMD_CTL_TIMEOUT_CNT		50
 25
 26struct lan743x_adapter;
 27
 28/* GPIO */
 29struct lan743x_gpio {
 30	/* gpio_lock: used to prevent concurrent access to gpio settings */
 31	spinlock_t gpio_lock;
 32
 33	int used_bits;
 34	int output_bits;
 35	int ptp_bits;
 36	u32 gpio_cfg0;
 37	u32 gpio_cfg1;
 38	u32 gpio_cfg2;
 39	u32 gpio_cfg3;
 40};
 41
 42int lan743x_gpio_init(struct lan743x_adapter *adapter);
 43
 44void lan743x_ptp_isr(void *context);
 45bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
 46void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
 47void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
 48				  struct sk_buff *skb, bool ignore_sync);
 49int lan743x_ptp_init(struct lan743x_adapter *adapter);
 50int lan743x_ptp_open(struct lan743x_adapter *adapter);
 51void lan743x_ptp_close(struct lan743x_adapter *adapter);
 52void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
 53				u32 link_speed);
 54int lan743x_ptp_hwtstamp_get(struct net_device *netdev,
 55			     struct kernel_hwtstamp_config *config);
 56int lan743x_ptp_hwtstamp_set(struct net_device *netdev,
 57			     struct kernel_hwtstamp_config *config,
 58			     struct netlink_ext_ack *extack);
 59
 60#define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4)
 61
 62#define PTP_FLAG_PTP_CLOCK_REGISTERED		BIT(1)
 63#define PTP_FLAG_ISR_ENABLED			BIT(2)
 64
 65struct lan743x_ptp_perout {
 66	int  event_ch;	/* PTP event channel (0=channel A, 1=channel B) */
 67	int  gpio_pin;	/* GPIO pin where output appears */
 68};
 69
 70struct lan743x_extts {
 71	int flags;
 72	struct timespec64 ts;
 73};
 74
 75struct lan743x_ptp {
 76	int flags;
 77
 78	/* command_lock: used to prevent concurrent ptp commands */
 79	struct mutex	command_lock;
 80
 81	struct ptp_clock *ptp_clock;
 82	struct ptp_clock_info ptp_clock_info;
 83	struct ptp_pin_desc pin_config[LAN743X_PTP_N_GPIO];
 84
 85	unsigned long used_event_ch;
 86	struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT];
 87	int ptp_io_perout[LAN743X_PTP_N_PEROUT]; /* PTP event channel (0=channel A, 1=channel B) */
 88	struct lan743x_extts extts[LAN743X_PTP_N_EXTTS];
 89
 90	bool leds_multiplexed;
 91	bool led_enabled[LAN7430_N_LED];
 92
 93	/* tx_ts_lock: used to prevent concurrent access to timestamp arrays */
 94	spinlock_t	tx_ts_lock;
 95	int pending_tx_timestamps;
 96	struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
 97	unsigned int	tx_ts_ignore_sync_queue;
 98	int tx_ts_skb_queue_size;
 99	u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
100	u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
101	u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
102	int tx_ts_queue_size;
103};
104
105#endif /* _LAN743X_PTP_H */