cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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lan743x_ptp.h (2987B)

      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
     25struct lan743x_adapter;
     26
     27/* GPIO */
     28struct 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
     41int lan743x_gpio_init(struct lan743x_adapter *adapter);
     42
     43void lan743x_ptp_isr(void *context);
     44bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
     45void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
     46void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
     47				  struct sk_buff *skb, bool ignore_sync);
     48int lan743x_ptp_init(struct lan743x_adapter *adapter);
     49int lan743x_ptp_open(struct lan743x_adapter *adapter);
     50void lan743x_ptp_close(struct lan743x_adapter *adapter);
     51void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
     52				u32 link_speed);
     53
     54int 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
     61struct 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
     66struct lan743x_extts {
     67	int flags;
     68	struct timespec64 ts;
     69};
     70
     71struct 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 */