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 LAN743X_PTP_N_EXTTS 4 22 #define LAN743X_PTP_N_PPS 0 23 #define PCI11X1X_PTP_IO_MAX_CHANNELS 8 24 25 struct lan743x_adapter; 26 27 /* GPIO */ 28 struct lan743x_gpio { 29 /* gpio_lock: used to prevent concurrent access to gpio settings */ 30 spinlock_t gpio_lock; 31 32 int used_bits; 33 int output_bits; 34 int ptp_bits; 35 u32 gpio_cfg0; 36 u32 gpio_cfg1; 37 u32 gpio_cfg2; 38 u32 gpio_cfg3; 39 }; 40 41 int lan743x_gpio_init(struct lan743x_adapter *adapter); 42 43 void lan743x_ptp_isr(void *context); 44 bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter); 45 void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter); 46 void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter, 47 struct sk_buff *skb, bool ignore_sync); 48 int lan743x_ptp_init(struct lan743x_adapter *adapter); 49 int lan743x_ptp_open(struct lan743x_adapter *adapter); 50 void lan743x_ptp_close(struct lan743x_adapter *adapter); 51 void lan743x_ptp_update_latency(struct lan743x_adapter *adapter, 52 u32 link_speed); 53 54 int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); 55 56 #define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4) 57 58 #define PTP_FLAG_PTP_CLOCK_REGISTERED BIT(1) 59 #define PTP_FLAG_ISR_ENABLED BIT(2) 60 61 struct lan743x_ptp_perout { 62 int event_ch; /* PTP event channel (0=channel A, 1=channel B) */ 63 int gpio_pin; /* GPIO pin where output appears */ 64 }; 65 66 struct lan743x_extts { 67 int flags; 68 struct timespec64 ts; 69 }; 70 71 struct lan743x_ptp { 72 int flags; 73 74 /* command_lock: used to prevent concurrent ptp commands */ 75 struct mutex command_lock; 76 77 struct ptp_clock *ptp_clock; 78 struct ptp_clock_info ptp_clock_info; 79 struct ptp_pin_desc pin_config[LAN743X_PTP_N_GPIO]; 80 81 unsigned long used_event_ch; 82 struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT]; 83 int ptp_io_perout[LAN743X_PTP_N_PEROUT]; /* PTP event channel (0=channel A, 1=channel B) */ 84 struct lan743x_extts extts[LAN743X_PTP_N_EXTTS]; 85 86 bool leds_multiplexed; 87 bool led_enabled[LAN7430_N_LED]; 88 89 /* tx_ts_lock: used to prevent concurrent access to timestamp arrays */ 90 spinlock_t tx_ts_lock; 91 int pending_tx_timestamps; 92 struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 93 unsigned int tx_ts_ignore_sync_queue; 94 int tx_ts_skb_queue_size; 95 u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 96 u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 97 u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 98 int tx_ts_queue_size; 99 }; 100 101 #endif /* _LAN743X_PTP_H */ 102
