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 [LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; |
98 | int tx_ts_queue_size; |
99 | }; |
100 | |
101 | #endif /* _LAN743X_PTP_H */ |
102 | |