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 26 struct lan743x_adapter; 27 28 /* GPIO */ 29 struct 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 42 int lan743x_gpio_init(struct lan743x_adapter *adapter); 43 44 void lan743x_ptp_isr(void *context); 45 bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter); 46 void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter); 47 void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter, 48 struct sk_buff *skb, bool ignore_sync); 49 int lan743x_ptp_init(struct lan743x_adapter *adapter); 50 int lan743x_ptp_open(struct lan743x_adapter *adapter); 51 void lan743x_ptp_close(struct lan743x_adapter *adapter); 52 void lan743x_ptp_update_latency(struct lan743x_adapter *adapter, 53 u32 link_speed); 54 int lan743x_ptp_hwtstamp_get(struct net_device *netdev, 55 struct kernel_hwtstamp_config *config); 56 int 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 65 struct 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 70 struct lan743x_extts { 71 int flags; 72 struct timespec64 ts; 73 }; 74 75 struct 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 */ 106