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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hellcreek_hwtstamp.h (1848B)

      1/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
      2/*
      3 * DSA driver for:
      4 * Hirschmann Hellcreek TSN switch.
      5 *
      6 * Copyright (C) 2019,2020 Hochschule Offenburg
      7 * Copyright (C) 2019,2020 Linutronix GmbH
      8 * Authors: Kurt Kanzenbach <kurt@linutronix.de>
      9 *	    Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
     10 */
     11
     12#ifndef _HELLCREEK_HWTSTAMP_H_
     13#define _HELLCREEK_HWTSTAMP_H_
     14
     15#include <net/dsa.h>
     16#include "hellcreek.h"
     17
     18/* Timestamp Register */
     19#define PR_TS_RX_P1_STATUS_C	(0x1d * 2)
     20#define PR_TS_RX_P1_DATA_C	(0x1e * 2)
     21#define PR_TS_TX_P1_STATUS_C	(0x1f * 2)
     22#define PR_TS_TX_P1_DATA_C	(0x20 * 2)
     23#define PR_TS_RX_P2_STATUS_C	(0x25 * 2)
     24#define PR_TS_RX_P2_DATA_C	(0x26 * 2)
     25#define PR_TS_TX_P2_STATUS_C	(0x27 * 2)
     26#define PR_TS_TX_P2_DATA_C	(0x28 * 2)
     27
     28#define PR_TS_STATUS_TS_AVAIL	BIT(2)
     29#define PR_TS_STATUS_TS_LOST	BIT(3)
     30
     31#define SKB_PTP_TYPE(__skb) (*(unsigned int *)((__skb)->cb))
     32
     33/* TX_TSTAMP_TIMEOUT: This limits the time spent polling for a TX
     34 * timestamp. When working properly, hardware will produce a timestamp
     35 * within 1ms. Software may enounter delays, so the timeout is set
     36 * accordingly.
     37 */
     38#define TX_TSTAMP_TIMEOUT	msecs_to_jiffies(40)
     39
     40int hellcreek_port_hwtstamp_set(struct dsa_switch *ds, int port,
     41				struct ifreq *ifr);
     42int hellcreek_port_hwtstamp_get(struct dsa_switch *ds, int port,
     43				struct ifreq *ifr);
     44
     45bool hellcreek_port_rxtstamp(struct dsa_switch *ds, int port,
     46			     struct sk_buff *clone, unsigned int type);
     47void hellcreek_port_txtstamp(struct dsa_switch *ds, int port,
     48			     struct sk_buff *skb);
     49
     50int hellcreek_get_ts_info(struct dsa_switch *ds, int port,
     51			  struct ethtool_ts_info *info);
     52
     53long hellcreek_hwtstamp_work(struct ptp_clock_info *ptp);
     54
     55int hellcreek_hwtstamp_setup(struct hellcreek *chip);
     56void hellcreek_hwtstamp_free(struct hellcreek *chip);
     57
     58#endif /* _HELLCREEK_HWTSTAMP_H_ */