tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
10struct lan743x_adapter;
11
12/* GPIO */
13struct lan743x_gpio {
14 /* gpio_lock: used to prevent concurrent access to gpio settings */
15 spinlock_t gpio_lock;
16
17 int used_bits;
18 int output_bits;
19 int ptp_bits;
20 u32 gpio_cfg0;
21 u32 gpio_cfg1;
22 u32 gpio_cfg2;
23 u32 gpio_cfg3;
24};
25
26int lan743x_gpio_init(struct lan743x_adapter *adapter);
27
28void lan743x_ptp_isr(void *context);
29bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
30void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
31void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
32 struct sk_buff *skb, bool ignore_sync);
33int lan743x_ptp_init(struct lan743x_adapter *adapter);
34int lan743x_ptp_open(struct lan743x_adapter *adapter);
35void lan743x_ptp_close(struct lan743x_adapter *adapter);
36void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
37 u32 link_speed);
38
39int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
40
41#define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4)
42
43#define PTP_FLAG_PTP_CLOCK_REGISTERED BIT(1)
44#define PTP_FLAG_ISR_ENABLED BIT(2)
45
46struct lan743x_ptp {
47 int flags;
48
49 /* command_lock: used to prevent concurrent ptp commands */
50 struct mutex command_lock;
51
52 struct ptp_clock *ptp_clock;
53 struct ptp_clock_info ptp_clock_info;
54 struct ptp_pin_desc pin_config[1];
55
56#define LAN743X_PTP_NUMBER_OF_EVENT_CHANNELS (2)
57 unsigned long used_event_ch;
58
59 int perout_event_ch;
60 int perout_gpio_bit;
61
62 /* tx_ts_lock: used to prevent concurrent access to timestamp arrays */
63 spinlock_t tx_ts_lock;
64 int pending_tx_timestamps;
65 struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
66 unsigned int tx_ts_ignore_sync_queue;
67 int tx_ts_skb_queue_size;
68 u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
69 u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
70 u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
71 int tx_ts_queue_size;
72};
73
74#endif /* _LAN743X_PTP_H */