devices/igb/igb_ptp-3.18-orig.c
author Florian Pose <fp@igh.de>
Fri, 27 Oct 2017 12:18:11 +0200
branchstable-1.5
changeset 2690 d984f57bef97
parent 2685 740291442c05
permissions -rw-r--r--
Mention igb driver in config files.
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/* PTP Hardware Clock (PHC) driver for the Intel 82576 and 82580
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 *
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 * Copyright (C) 2011 Richard Cochran <richardcochran@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License along with
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 * this program; if not, see <http://www.gnu.org/licenses/>.
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 */
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/pci.h>
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#include <linux/ptp_classify.h>
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#include "igb.h"
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#define INCVALUE_MASK		0x7fffffff
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#define ISGN			0x80000000
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/* The 82580 timesync updates the system timer every 8ns by 8ns,
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 * and this update value cannot be reprogrammed.
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 *
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 * Neither the 82576 nor the 82580 offer registers wide enough to hold
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 * nanoseconds time values for very long. For the 82580, SYSTIM always
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 * counts nanoseconds, but the upper 24 bits are not availible. The
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 * frequency is adjusted by changing the 32 bit fractional nanoseconds
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 * register, TIMINCA.
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 *
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 * For the 82576, the SYSTIM register time unit is affect by the
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 * choice of the 24 bit TININCA:IV (incvalue) field. Five bits of this
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 * field are needed to provide the nominal 16 nanosecond period,
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 * leaving 19 bits for fractional nanoseconds.
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 *
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 * We scale the NIC clock cycle by a large factor so that relatively
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 * small clock corrections can be added or subtracted at each clock
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 * tick. The drawbacks of a large factor are a) that the clock
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 * register overflows more quickly (not such a big deal) and b) that
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 * the increment per tick has to fit into 24 bits.  As a result we
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 * need to use a shift of 19 so we can fit a value of 16 into the
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 * TIMINCA register.
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 *
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 *
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 *             SYSTIMH            SYSTIML
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 *        +--------------+   +---+---+------+
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 *  82576 |      32      |   | 8 | 5 |  19  |
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 *        +--------------+   +---+---+------+
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 *         \________ 45 bits _______/  fract
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 *
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 *        +----------+---+   +--------------+
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 *  82580 |    24    | 8 |   |      32      |
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 *        +----------+---+   +--------------+
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 *          reserved  \______ 40 bits _____/
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 *
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 *
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 * The 45 bit 82576 SYSTIM overflows every
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 *   2^45 * 10^-9 / 3600 = 9.77 hours.
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 *
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 * The 40 bit 82580 SYSTIM overflows every
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 *   2^40 * 10^-9 /  60  = 18.3 minutes.
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 */
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#define IGB_SYSTIM_OVERFLOW_PERIOD	(HZ * 60 * 9)
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#define IGB_PTP_TX_TIMEOUT		(HZ * 15)
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#define INCPERIOD_82576			(1 << E1000_TIMINCA_16NS_SHIFT)
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#define INCVALUE_82576_MASK		((1 << E1000_TIMINCA_16NS_SHIFT) - 1)
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#define INCVALUE_82576			(16 << IGB_82576_TSYNC_SHIFT)
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#define IGB_NBITS_82580			40
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static void igb_ptp_tx_hwtstamp(struct igb_adapter *adapter);
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/* SYSTIM read access for the 82576 */
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static cycle_t igb_ptp_read_82576(const struct cyclecounter *cc)
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{
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	struct igb_adapter *igb = container_of(cc, struct igb_adapter, cc);
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	struct e1000_hw *hw = &igb->hw;
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	u64 val;
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	u32 lo, hi;
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	lo = rd32(E1000_SYSTIML);
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	hi = rd32(E1000_SYSTIMH);
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	val = ((u64) hi) << 32;
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	val |= lo;
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	return val;
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}
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/* SYSTIM read access for the 82580 */
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static cycle_t igb_ptp_read_82580(const struct cyclecounter *cc)
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{
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	struct igb_adapter *igb = container_of(cc, struct igb_adapter, cc);
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	struct e1000_hw *hw = &igb->hw;
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	u32 lo, hi;
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	u64 val;
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	/* The timestamp latches on lowest register read. For the 82580
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	 * the lowest register is SYSTIMR instead of SYSTIML.  However we only
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	 * need to provide nanosecond resolution, so we just ignore it.
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	 */
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	rd32(E1000_SYSTIMR);
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	lo = rd32(E1000_SYSTIML);
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	hi = rd32(E1000_SYSTIMH);
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	val = ((u64) hi) << 32;
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	val |= lo;
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	return val;
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}
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/* SYSTIM read access for I210/I211 */
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static void igb_ptp_read_i210(struct igb_adapter *adapter, struct timespec *ts)
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{
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	struct e1000_hw *hw = &adapter->hw;
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	u32 sec, nsec;
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	/* The timestamp latches on lowest register read. For I210/I211, the
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	 * lowest register is SYSTIMR. Since we only need to provide nanosecond
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	 * resolution, we can ignore it.
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	 */
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	rd32(E1000_SYSTIMR);
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	nsec = rd32(E1000_SYSTIML);
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	sec = rd32(E1000_SYSTIMH);
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   131
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	ts->tv_sec = sec;
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   133
	ts->tv_nsec = nsec;
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   134
}
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   135
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   136
static void igb_ptp_write_i210(struct igb_adapter *adapter,
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   137
			       const struct timespec *ts)
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   138
{
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   139
	struct e1000_hw *hw = &adapter->hw;
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   141
	/* Writing the SYSTIMR register is not necessary as it only provides
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   142
	 * sub-nanosecond resolution.
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   143
	 */
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   144
	wr32(E1000_SYSTIML, ts->tv_nsec);
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   145
	wr32(E1000_SYSTIMH, ts->tv_sec);
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   146
}
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   148
/**
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 * igb_ptp_systim_to_hwtstamp - convert system time value to hw timestamp
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 * @adapter: board private structure
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   151
 * @hwtstamps: timestamp structure to update
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   152
 * @systim: unsigned 64bit system time value.
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   153
 *
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   154
 * We need to convert the system time value stored in the RX/TXSTMP registers
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   155
 * into a hwtstamp which can be used by the upper level timestamping functions.
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   156
 *
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   157
 * The 'tmreg_lock' spinlock is used to protect the consistency of the
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   158
 * system time value. This is needed because reading the 64 bit time
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   159
 * value involves reading two (or three) 32 bit registers. The first
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   160
 * read latches the value. Ditto for writing.
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   161
 *
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   162
 * In addition, here have extended the system time with an overflow
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   163
 * counter in software.
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   164
 **/
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   165
static void igb_ptp_systim_to_hwtstamp(struct igb_adapter *adapter,
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   166
				       struct skb_shared_hwtstamps *hwtstamps,
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   167
				       u64 systim)
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   168
{
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   169
	unsigned long flags;
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   170
	u64 ns;
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   171
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   172
	switch (adapter->hw.mac.type) {
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   173
	case e1000_82576:
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   174
	case e1000_82580:
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   175
	case e1000_i354:
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   176
	case e1000_i350:
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		spin_lock_irqsave(&adapter->tmreg_lock, flags);
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   178
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   179
		ns = timecounter_cyc2time(&adapter->tc, systim);
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   180
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   181
		spin_unlock_irqrestore(&adapter->tmreg_lock, flags);
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   182
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   183
		memset(hwtstamps, 0, sizeof(*hwtstamps));
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   184
		hwtstamps->hwtstamp = ns_to_ktime(ns);
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   185
		break;
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   186
	case e1000_i210:
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   187
	case e1000_i211:
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   188
		memset(hwtstamps, 0, sizeof(*hwtstamps));
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   189
		/* Upper 32 bits contain s, lower 32 bits contain ns. */
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   190
		hwtstamps->hwtstamp = ktime_set(systim >> 32,
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   191
						systim & 0xFFFFFFFF);
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   192
		break;
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diff changeset
   193
	default:
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   194
		break;
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   195
	}
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   196
}
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   197
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   198
/* PTP clock operations */
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   199
static int igb_ptp_adjfreq_82576(struct ptp_clock_info *ptp, s32 ppb)
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   200
{
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   201
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
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   202
					       ptp_caps);
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   203
	struct e1000_hw *hw = &igb->hw;
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   204
	int neg_adj = 0;
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   205
	u64 rate;
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   206
	u32 incvalue;
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   207
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   208
	if (ppb < 0) {
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   209
		neg_adj = 1;
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   210
		ppb = -ppb;
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diff changeset
   211
	}
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   212
	rate = ppb;
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   213
	rate <<= 14;
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   214
	rate = div_u64(rate, 1953125);
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   215
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Florian Pose <fp@igh.de>
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   216
	incvalue = 16 << IGB_82576_TSYNC_SHIFT;
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   217
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   218
	if (neg_adj)
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   219
		incvalue -= rate;
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diff changeset
   220
	else
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diff changeset
   221
		incvalue += rate;
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diff changeset
   222
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   223
	wr32(E1000_TIMINCA, INCPERIOD_82576 | (incvalue & INCVALUE_82576_MASK));
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diff changeset
   224
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   225
	return 0;
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parents:
diff changeset
   226
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   227
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   228
static int igb_ptp_adjfreq_82580(struct ptp_clock_info *ptp, s32 ppb)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   229
{
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   230
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   231
					       ptp_caps);
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   232
	struct e1000_hw *hw = &igb->hw;
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   233
	int neg_adj = 0;
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diff changeset
   234
	u64 rate;
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parents:
diff changeset
   235
	u32 inca;
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parents:
diff changeset
   236
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   237
	if (ppb < 0) {
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diff changeset
   238
		neg_adj = 1;
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diff changeset
   239
		ppb = -ppb;
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parents:
diff changeset
   240
	}
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Florian Pose <fp@igh.de>
parents:
diff changeset
   241
	rate = ppb;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   242
	rate <<= 26;
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parents:
diff changeset
   243
	rate = div_u64(rate, 1953125);
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diff changeset
   244
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   245
	inca = rate & INCVALUE_MASK;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   246
	if (neg_adj)
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Florian Pose <fp@igh.de>
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diff changeset
   247
		inca |= ISGN;
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diff changeset
   248
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   249
	wr32(E1000_TIMINCA, inca);
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diff changeset
   250
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   251
	return 0;
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diff changeset
   252
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   253
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   254
static int igb_ptp_adjtime_82576(struct ptp_clock_info *ptp, s64 delta)
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parents:
diff changeset
   255
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   256
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
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diff changeset
   257
					       ptp_caps);
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parents:
diff changeset
   258
	unsigned long flags;
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Florian Pose <fp@igh.de>
parents:
diff changeset
   259
	s64 now;
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   260
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   261
	spin_lock_irqsave(&igb->tmreg_lock, flags);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   262
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   263
	now = timecounter_read(&igb->tc);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   264
	now += delta;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   265
	timecounter_init(&igb->tc, &igb->cc, now);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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	spin_unlock_irqrestore(&igb->tmreg_lock, flags);
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	return 0;
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}
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static int igb_ptp_adjtime_i210(struct ptp_clock_info *ptp, s64 delta)
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{
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   274
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
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					       ptp_caps);
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	unsigned long flags;
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	struct timespec now, then = ns_to_timespec(delta);
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	spin_lock_irqsave(&igb->tmreg_lock, flags);
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	igb_ptp_read_i210(igb, &now);
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   282
	now = timespec_add(now, then);
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   283
	igb_ptp_write_i210(igb, (const struct timespec *)&now);
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   285
	spin_unlock_irqrestore(&igb->tmreg_lock, flags);
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   286
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   287
	return 0;
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   288
}
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   289
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   290
static int igb_ptp_gettime_82576(struct ptp_clock_info *ptp,
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   291
				 struct timespec *ts)
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{
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   293
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
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   294
					       ptp_caps);
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   295
	unsigned long flags;
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   296
	u64 ns;
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   297
	u32 remainder;
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   298
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	spin_lock_irqsave(&igb->tmreg_lock, flags);
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   300
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   301
	ns = timecounter_read(&igb->tc);
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   302
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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	spin_unlock_irqrestore(&igb->tmreg_lock, flags);
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   304
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   305
	ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder);
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   306
	ts->tv_nsec = remainder;
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   307
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   308
	return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   309
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   310
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   311
static int igb_ptp_gettime_i210(struct ptp_clock_info *ptp,
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   312
				struct timespec *ts)
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   313
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   314
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   315
					       ptp_caps);
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   316
	unsigned long flags;
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   317
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   318
	spin_lock_irqsave(&igb->tmreg_lock, flags);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   319
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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   320
	igb_ptp_read_i210(igb, ts);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   321
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   322
	spin_unlock_irqrestore(&igb->tmreg_lock, flags);
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diff changeset
   323
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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   324
	return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   325
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   326
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
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   327
static int igb_ptp_settime_82576(struct ptp_clock_info *ptp,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   328
				 const struct timespec *ts)
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diff changeset
   329
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   330
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   331
					       ptp_caps);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   332
	unsigned long flags;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   333
	u64 ns;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   334
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   335
	ns = ts->tv_sec * 1000000000ULL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   336
	ns += ts->tv_nsec;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   337
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   338
	spin_lock_irqsave(&igb->tmreg_lock, flags);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   339
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   340
	timecounter_init(&igb->tc, &igb->cc, ns);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   341
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   342
	spin_unlock_irqrestore(&igb->tmreg_lock, flags);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   343
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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diff changeset
   344
	return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   345
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   346
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
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diff changeset
   347
static int igb_ptp_settime_i210(struct ptp_clock_info *ptp,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   348
				const struct timespec *ts)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   349
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   350
	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   351
					       ptp_caps);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   352
	unsigned long flags;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   353
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   354
	spin_lock_irqsave(&igb->tmreg_lock, flags);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   355
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   356
	igb_ptp_write_i210(igb, ts);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   357
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   358
	spin_unlock_irqrestore(&igb->tmreg_lock, flags);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   359
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   360
	return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   361
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   362
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   363
static int igb_ptp_feature_enable(struct ptp_clock_info *ptp,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   364
				  struct ptp_clock_request *rq, int on)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   365
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   366
	return -EOPNOTSUPP;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   367
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   368
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   369
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   370
 * igb_ptp_tx_work
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   371
 * @work: pointer to work struct
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   372
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   373
 * This work function polls the TSYNCTXCTL valid bit to determine when a
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   374
 * timestamp has been taken for the current stored skb.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   375
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   376
static void igb_ptp_tx_work(struct work_struct *work)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   377
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   378
	struct igb_adapter *adapter = container_of(work, struct igb_adapter,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   379
						   ptp_tx_work);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   380
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   381
	u32 tsynctxctl;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   382
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   383
	if (!adapter->ptp_tx_skb)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   384
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   385
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   386
	if (time_is_before_jiffies(adapter->ptp_tx_start +
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   387
				   IGB_PTP_TX_TIMEOUT)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   388
		dev_kfree_skb_any(adapter->ptp_tx_skb);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   389
		adapter->ptp_tx_skb = NULL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   390
		clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   391
		adapter->tx_hwtstamp_timeouts++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   392
		dev_warn(&adapter->pdev->dev, "clearing Tx timestamp hang\n");
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   393
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   394
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   395
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   396
	tsynctxctl = rd32(E1000_TSYNCTXCTL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   397
	if (tsynctxctl & E1000_TSYNCTXCTL_VALID)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   398
		igb_ptp_tx_hwtstamp(adapter);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   399
	else
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   400
		/* reschedule to check later */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   401
		schedule_work(&adapter->ptp_tx_work);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   402
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   403
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   404
static void igb_ptp_overflow_check(struct work_struct *work)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   405
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   406
	struct igb_adapter *igb =
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   407
		container_of(work, struct igb_adapter, ptp_overflow_work.work);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   408
	struct timespec ts;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   409
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   410
	igb->ptp_caps.gettime(&igb->ptp_caps, &ts);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   411
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   412
	pr_debug("igb overflow check at %ld.%09lu\n", ts.tv_sec, ts.tv_nsec);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   413
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   414
	schedule_delayed_work(&igb->ptp_overflow_work,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   415
			      IGB_SYSTIM_OVERFLOW_PERIOD);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   416
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   417
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   418
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   419
 * igb_ptp_rx_hang - detect error case when Rx timestamp registers latched
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   420
 * @adapter: private network adapter structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   421
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   422
 * This watchdog task is scheduled to detect error case where hardware has
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   423
 * dropped an Rx packet that was timestamped when the ring is full. The
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   424
 * particular error is rare but leaves the device in a state unable to timestamp
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   425
 * any future packets.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   426
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   427
void igb_ptp_rx_hang(struct igb_adapter *adapter)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   428
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   429
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   430
	u32 tsyncrxctl = rd32(E1000_TSYNCRXCTL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   431
	unsigned long rx_event;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   432
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   433
	if (hw->mac.type != e1000_82576)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   434
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   435
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   436
	/* If we don't have a valid timestamp in the registers, just update the
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   437
	 * timeout counter and exit
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   438
	 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   439
	if (!(tsyncrxctl & E1000_TSYNCRXCTL_VALID)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   440
		adapter->last_rx_ptp_check = jiffies;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   441
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   442
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   443
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   444
	/* Determine the most recent watchdog or rx_timestamp event */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   445
	rx_event = adapter->last_rx_ptp_check;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   446
	if (time_after(adapter->last_rx_timestamp, rx_event))
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   447
		rx_event = adapter->last_rx_timestamp;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   448
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   449
	/* Only need to read the high RXSTMP register to clear the lock */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   450
	if (time_is_before_jiffies(rx_event + 5 * HZ)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   451
		rd32(E1000_RXSTMPH);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   452
		adapter->last_rx_ptp_check = jiffies;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   453
		adapter->rx_hwtstamp_cleared++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   454
		dev_warn(&adapter->pdev->dev, "clearing Rx timestamp hang\n");
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   455
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   456
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   457
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   458
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   459
 * igb_ptp_tx_hwtstamp - utility function which checks for TX time stamp
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   460
 * @adapter: Board private structure.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   461
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   462
 * If we were asked to do hardware stamping and such a time stamp is
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   463
 * available, then it must have been for this skb here because we only
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   464
 * allow only one such packet into the queue.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   465
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   466
static void igb_ptp_tx_hwtstamp(struct igb_adapter *adapter)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   467
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   468
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   469
	struct skb_shared_hwtstamps shhwtstamps;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   470
	u64 regval;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   471
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   472
	regval = rd32(E1000_TXSTMPL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   473
	regval |= (u64)rd32(E1000_TXSTMPH) << 32;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   474
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   475
	igb_ptp_systim_to_hwtstamp(adapter, &shhwtstamps, regval);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   476
	skb_tstamp_tx(adapter->ptp_tx_skb, &shhwtstamps);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   477
	dev_kfree_skb_any(adapter->ptp_tx_skb);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   478
	adapter->ptp_tx_skb = NULL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   479
	clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   480
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   481
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   482
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   483
 * igb_ptp_rx_pktstamp - retrieve Rx per packet timestamp
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   484
 * @q_vector: Pointer to interrupt specific structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   485
 * @va: Pointer to address containing Rx buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   486
 * @skb: Buffer containing timestamp and packet
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   487
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   488
 * This function is meant to retrieve a timestamp from the first buffer of an
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   489
 * incoming frame.  The value is stored in little endian format starting on
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   490
 * byte 8.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   491
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   492
void igb_ptp_rx_pktstamp(struct igb_q_vector *q_vector,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   493
			 unsigned char *va,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   494
			 struct sk_buff *skb)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   495
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   496
	__le64 *regval = (__le64 *)va;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   497
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   498
	/* The timestamp is recorded in little endian format.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   499
	 * DWORD: 0        1        2        3
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   500
	 * Field: Reserved Reserved SYSTIML  SYSTIMH
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   501
	 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   502
	igb_ptp_systim_to_hwtstamp(q_vector->adapter, skb_hwtstamps(skb),
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   503
				   le64_to_cpu(regval[1]));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   504
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   505
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   506
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   507
 * igb_ptp_rx_rgtstamp - retrieve Rx timestamp stored in register
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   508
 * @q_vector: Pointer to interrupt specific structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   509
 * @skb: Buffer containing timestamp and packet
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   510
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   511
 * This function is meant to retrieve a timestamp from the internal registers
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   512
 * of the adapter and store it in the skb.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   513
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   514
void igb_ptp_rx_rgtstamp(struct igb_q_vector *q_vector,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   515
			 struct sk_buff *skb)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   516
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   517
	struct igb_adapter *adapter = q_vector->adapter;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   518
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   519
	u64 regval;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   520
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   521
	/* If this bit is set, then the RX registers contain the time stamp. No
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   522
	 * other packet will be time stamped until we read these registers, so
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   523
	 * read the registers to make them available again. Because only one
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   524
	 * packet can be time stamped at a time, we know that the register
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   525
	 * values must belong to this one here and therefore we don't need to
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   526
	 * compare any of the additional attributes stored for it.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   527
	 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   528
	 * If nothing went wrong, then it should have a shared tx_flags that we
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   529
	 * can turn into a skb_shared_hwtstamps.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   530
	 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   531
	if (!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID))
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   532
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   533
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   534
	regval = rd32(E1000_RXSTMPL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   535
	regval |= (u64)rd32(E1000_RXSTMPH) << 32;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   536
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   537
	igb_ptp_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), regval);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   538
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   539
	/* Update the last_rx_timestamp timer in order to enable watchdog check
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   540
	 * for error case of latched timestamp on a dropped packet.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   541
	 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   542
	adapter->last_rx_timestamp = jiffies;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   543
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   544
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   545
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   546
 * igb_ptp_get_ts_config - get hardware time stamping config
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   547
 * @netdev:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   548
 * @ifreq:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   549
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   550
 * Get the hwtstamp_config settings to return to the user. Rather than attempt
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   551
 * to deconstruct the settings from the registers, just return a shadow copy
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   552
 * of the last known settings.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   553
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   554
int igb_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   555
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   556
	struct igb_adapter *adapter = netdev_priv(netdev);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   557
	struct hwtstamp_config *config = &adapter->tstamp_config;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   558
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   559
	return copy_to_user(ifr->ifr_data, config, sizeof(*config)) ?
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   560
		-EFAULT : 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   561
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   562
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   563
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   564
 * igb_ptp_set_timestamp_mode - setup hardware for timestamping
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   565
 * @adapter: networking device structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   566
 * @config: hwtstamp configuration
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   567
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   568
 * Outgoing time stamping can be enabled and disabled. Play nice and
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   569
 * disable it when requested, although it shouldn't case any overhead
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   570
 * when no packet needs it. At most one packet in the queue may be
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   571
 * marked for time stamping, otherwise it would be impossible to tell
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   572
 * for sure to which packet the hardware time stamp belongs.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   573
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   574
 * Incoming time stamping has to be configured via the hardware
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   575
 * filters. Not all combinations are supported, in particular event
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   576
 * type has to be specified. Matching the kind of event packet is
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   577
 * not supported, with the exception of "all V2 events regardless of
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   578
 * level 2 or 4".
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   579
 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   580
static int igb_ptp_set_timestamp_mode(struct igb_adapter *adapter,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   581
				      struct hwtstamp_config *config)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   582
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   583
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   584
	u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   585
	u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   586
	u32 tsync_rx_cfg = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   587
	bool is_l4 = false;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   588
	bool is_l2 = false;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   589
	u32 regval;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   590
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   591
	/* reserved for future extensions */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   592
	if (config->flags)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   593
		return -EINVAL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   594
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   595
	switch (config->tx_type) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   596
	case HWTSTAMP_TX_OFF:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   597
		tsync_tx_ctl = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   598
	case HWTSTAMP_TX_ON:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   599
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   600
	default:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   601
		return -ERANGE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   602
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   603
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   604
	switch (config->rx_filter) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   605
	case HWTSTAMP_FILTER_NONE:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   606
		tsync_rx_ctl = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   607
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   608
	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   609
		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   610
		tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   611
		is_l4 = true;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   612
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   613
	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   614
		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   615
		tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   616
		is_l4 = true;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   617
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   618
	case HWTSTAMP_FILTER_PTP_V2_EVENT:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   619
	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   620
	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   621
	case HWTSTAMP_FILTER_PTP_V2_SYNC:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   622
	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   623
	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   624
	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   625
	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   626
	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   627
		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   628
		config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   629
		is_l2 = true;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   630
		is_l4 = true;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   631
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   632
	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   633
	case HWTSTAMP_FILTER_ALL:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   634
		/* 82576 cannot timestamp all packets, which it needs to do to
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   635
		 * support both V1 Sync and Delay_Req messages
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   636
		 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   637
		if (hw->mac.type != e1000_82576) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   638
			tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   639
			config->rx_filter = HWTSTAMP_FILTER_ALL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   640
			break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   641
		}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   642
		/* fall through */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   643
	default:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   644
		config->rx_filter = HWTSTAMP_FILTER_NONE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   645
		return -ERANGE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   646
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   647
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   648
	if (hw->mac.type == e1000_82575) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   649
		if (tsync_rx_ctl | tsync_tx_ctl)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   650
			return -EINVAL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   651
		return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   652
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   653
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   654
	/* Per-packet timestamping only works if all packets are
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   655
	 * timestamped, so enable timestamping in all packets as
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   656
	 * long as one Rx filter was configured.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   657
	 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   658
	if ((hw->mac.type >= e1000_82580) && tsync_rx_ctl) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   659
		tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   660
		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   661
		config->rx_filter = HWTSTAMP_FILTER_ALL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   662
		is_l2 = true;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   663
		is_l4 = true;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   664
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   665
		if ((hw->mac.type == e1000_i210) ||
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   666
		    (hw->mac.type == e1000_i211)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   667
			regval = rd32(E1000_RXPBS);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   668
			regval |= E1000_RXPBS_CFG_TS_EN;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   669
			wr32(E1000_RXPBS, regval);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   670
		}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   671
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   672
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   673
	/* enable/disable TX */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   674
	regval = rd32(E1000_TSYNCTXCTL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   675
	regval &= ~E1000_TSYNCTXCTL_ENABLED;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   676
	regval |= tsync_tx_ctl;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   677
	wr32(E1000_TSYNCTXCTL, regval);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   678
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   679
	/* enable/disable RX */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   680
	regval = rd32(E1000_TSYNCRXCTL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   681
	regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   682
	regval |= tsync_rx_ctl;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   683
	wr32(E1000_TSYNCRXCTL, regval);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   684
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   685
	/* define which PTP packets are time stamped */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   686
	wr32(E1000_TSYNCRXCFG, tsync_rx_cfg);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   687
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   688
	/* define ethertype filter for timestamped packets */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   689
	if (is_l2)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   690
		wr32(E1000_ETQF(3),
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   691
		     (E1000_ETQF_FILTER_ENABLE | /* enable filter */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   692
		      E1000_ETQF_1588 | /* enable timestamping */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   693
		      ETH_P_1588));     /* 1588 eth protocol type */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   694
	else
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   695
		wr32(E1000_ETQF(3), 0);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   696
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   697
	/* L4 Queue Filter[3]: filter by destination port and protocol */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   698
	if (is_l4) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   699
		u32 ftqf = (IPPROTO_UDP /* UDP */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   700
			| E1000_FTQF_VF_BP /* VF not compared */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   701
			| E1000_FTQF_1588_TIME_STAMP /* Enable Timestamping */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   702
			| E1000_FTQF_MASK); /* mask all inputs */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   703
		ftqf &= ~E1000_FTQF_MASK_PROTO_BP; /* enable protocol check */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   704
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   705
		wr32(E1000_IMIR(3), htons(PTP_EV_PORT));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   706
		wr32(E1000_IMIREXT(3),
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   707
		     (E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_BP));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   708
		if (hw->mac.type == e1000_82576) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   709
			/* enable source port check */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   710
			wr32(E1000_SPQF(3), htons(PTP_EV_PORT));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   711
			ftqf &= ~E1000_FTQF_MASK_SOURCE_PORT_BP;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   712
		}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   713
		wr32(E1000_FTQF(3), ftqf);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   714
	} else {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   715
		wr32(E1000_FTQF(3), E1000_FTQF_MASK);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   716
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   717
	wrfl();
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   718
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   719
	/* clear TX/RX time stamp registers, just to be sure */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   720
	regval = rd32(E1000_TXSTMPL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   721
	regval = rd32(E1000_TXSTMPH);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   722
	regval = rd32(E1000_RXSTMPL);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   723
	regval = rd32(E1000_RXSTMPH);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   724
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   725
	return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   726
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   727
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   728
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   729
 * igb_ptp_set_ts_config - set hardware time stamping config
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   730
 * @netdev:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   731
 * @ifreq:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   732
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   733
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   734
int igb_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   735
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   736
	struct igb_adapter *adapter = netdev_priv(netdev);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   737
	struct hwtstamp_config config;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   738
	int err;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   739
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   740
	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   741
		return -EFAULT;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   742
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   743
	err = igb_ptp_set_timestamp_mode(adapter, &config);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   744
	if (err)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   745
		return err;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   746
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   747
	/* save these settings for future reference */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   748
	memcpy(&adapter->tstamp_config, &config,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   749
	       sizeof(adapter->tstamp_config));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   750
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   751
	return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   752
		-EFAULT : 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   753
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   754
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   755
void igb_ptp_init(struct igb_adapter *adapter)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   756
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   757
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   758
	struct net_device *netdev = adapter->netdev;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   759
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   760
	switch (hw->mac.type) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   761
	case e1000_82576:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   762
		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   763
		adapter->ptp_caps.owner = THIS_MODULE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   764
		adapter->ptp_caps.max_adj = 999999881;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   765
		adapter->ptp_caps.n_ext_ts = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   766
		adapter->ptp_caps.pps = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   767
		adapter->ptp_caps.adjfreq = igb_ptp_adjfreq_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   768
		adapter->ptp_caps.adjtime = igb_ptp_adjtime_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   769
		adapter->ptp_caps.gettime = igb_ptp_gettime_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   770
		adapter->ptp_caps.settime = igb_ptp_settime_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   771
		adapter->ptp_caps.enable = igb_ptp_feature_enable;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   772
		adapter->cc.read = igb_ptp_read_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   773
		adapter->cc.mask = CLOCKSOURCE_MASK(64);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   774
		adapter->cc.mult = 1;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   775
		adapter->cc.shift = IGB_82576_TSYNC_SHIFT;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   776
		/* Dial the nominal frequency. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   777
		wr32(E1000_TIMINCA, INCPERIOD_82576 | INCVALUE_82576);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   778
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   779
	case e1000_82580:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   780
	case e1000_i354:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   781
	case e1000_i350:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   782
		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   783
		adapter->ptp_caps.owner = THIS_MODULE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   784
		adapter->ptp_caps.max_adj = 62499999;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   785
		adapter->ptp_caps.n_ext_ts = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   786
		adapter->ptp_caps.pps = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   787
		adapter->ptp_caps.adjfreq = igb_ptp_adjfreq_82580;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   788
		adapter->ptp_caps.adjtime = igb_ptp_adjtime_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   789
		adapter->ptp_caps.gettime = igb_ptp_gettime_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   790
		adapter->ptp_caps.settime = igb_ptp_settime_82576;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   791
		adapter->ptp_caps.enable = igb_ptp_feature_enable;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   792
		adapter->cc.read = igb_ptp_read_82580;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   793
		adapter->cc.mask = CLOCKSOURCE_MASK(IGB_NBITS_82580);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   794
		adapter->cc.mult = 1;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   795
		adapter->cc.shift = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   796
		/* Enable the timer functions by clearing bit 31. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   797
		wr32(E1000_TSAUXC, 0x0);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   798
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   799
	case e1000_i210:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   800
	case e1000_i211:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   801
		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   802
		adapter->ptp_caps.owner = THIS_MODULE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   803
		adapter->ptp_caps.max_adj = 62499999;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   804
		adapter->ptp_caps.n_ext_ts = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   805
		adapter->ptp_caps.pps = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   806
		adapter->ptp_caps.adjfreq = igb_ptp_adjfreq_82580;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   807
		adapter->ptp_caps.adjtime = igb_ptp_adjtime_i210;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   808
		adapter->ptp_caps.gettime = igb_ptp_gettime_i210;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   809
		adapter->ptp_caps.settime = igb_ptp_settime_i210;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   810
		adapter->ptp_caps.enable = igb_ptp_feature_enable;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   811
		/* Enable the timer functions by clearing bit 31. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   812
		wr32(E1000_TSAUXC, 0x0);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   813
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   814
	default:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   815
		adapter->ptp_clock = NULL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   816
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   817
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   818
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   819
	wrfl();
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   820
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   821
	spin_lock_init(&adapter->tmreg_lock);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   822
	INIT_WORK(&adapter->ptp_tx_work, igb_ptp_tx_work);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   823
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   824
	/* Initialize the clock and overflow work for devices that need it. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   825
	if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   826
		struct timespec ts = ktime_to_timespec(ktime_get_real());
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   827
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   828
		igb_ptp_settime_i210(&adapter->ptp_caps, &ts);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   829
	} else {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   830
		timecounter_init(&adapter->tc, &adapter->cc,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   831
				 ktime_to_ns(ktime_get_real()));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   832
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   833
		INIT_DELAYED_WORK(&adapter->ptp_overflow_work,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   834
				  igb_ptp_overflow_check);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   835
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   836
		schedule_delayed_work(&adapter->ptp_overflow_work,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   837
				      IGB_SYSTIM_OVERFLOW_PERIOD);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   838
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   839
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   840
	/* Initialize the time sync interrupts for devices that support it. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   841
	if (hw->mac.type >= e1000_82580) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   842
		wr32(E1000_TSIM, TSYNC_INTERRUPTS);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   843
		wr32(E1000_IMS, E1000_IMS_TS);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   844
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   845
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   846
	adapter->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   847
	adapter->tstamp_config.tx_type = HWTSTAMP_TX_OFF;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   848
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   849
	adapter->ptp_clock = ptp_clock_register(&adapter->ptp_caps,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   850
						&adapter->pdev->dev);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   851
	if (IS_ERR(adapter->ptp_clock)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   852
		adapter->ptp_clock = NULL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   853
		dev_err(&adapter->pdev->dev, "ptp_clock_register failed\n");
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   854
	} else {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   855
		dev_info(&adapter->pdev->dev, "added PHC on %s\n",
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   856
			 adapter->netdev->name);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   857
		adapter->flags |= IGB_FLAG_PTP;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   858
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   859
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   860
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   861
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   862
 * igb_ptp_stop - Disable PTP device and stop the overflow check.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   863
 * @adapter: Board private structure.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   864
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   865
 * This function stops the PTP support and cancels the delayed work.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   866
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   867
void igb_ptp_stop(struct igb_adapter *adapter)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   868
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   869
	switch (adapter->hw.mac.type) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   870
	case e1000_82576:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   871
	case e1000_82580:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   872
	case e1000_i354:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   873
	case e1000_i350:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   874
		cancel_delayed_work_sync(&adapter->ptp_overflow_work);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   875
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   876
	case e1000_i210:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   877
	case e1000_i211:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   878
		/* No delayed work to cancel. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   879
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   880
	default:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   881
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   882
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   883
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   884
	cancel_work_sync(&adapter->ptp_tx_work);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   885
	if (adapter->ptp_tx_skb) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   886
		dev_kfree_skb_any(adapter->ptp_tx_skb);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   887
		adapter->ptp_tx_skb = NULL;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   888
		clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   889
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   890
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   891
	if (adapter->ptp_clock) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   892
		ptp_clock_unregister(adapter->ptp_clock);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   893
		dev_info(&adapter->pdev->dev, "removed PHC on %s\n",
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   894
			 adapter->netdev->name);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   895
		adapter->flags &= ~IGB_FLAG_PTP;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   896
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   897
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   898
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   899
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   900
 * igb_ptp_reset - Re-enable the adapter for PTP following a reset.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   901
 * @adapter: Board private structure.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   902
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   903
 * This function handles the reset work required to re-enable the PTP device.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   904
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   905
void igb_ptp_reset(struct igb_adapter *adapter)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   906
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   907
	struct e1000_hw *hw = &adapter->hw;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   908
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   909
	if (!(adapter->flags & IGB_FLAG_PTP))
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   910
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   911
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   912
	/* reset the tstamp_config */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   913
	igb_ptp_set_timestamp_mode(adapter, &adapter->tstamp_config);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   914
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   915
	switch (adapter->hw.mac.type) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   916
	case e1000_82576:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   917
		/* Dial the nominal frequency. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   918
		wr32(E1000_TIMINCA, INCPERIOD_82576 | INCVALUE_82576);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   919
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   920
	case e1000_82580:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   921
	case e1000_i354:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   922
	case e1000_i350:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   923
	case e1000_i210:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   924
	case e1000_i211:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   925
		/* Enable the timer functions and interrupts. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   926
		wr32(E1000_TSAUXC, 0x0);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   927
		wr32(E1000_TSIM, TSYNC_INTERRUPTS);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   928
		wr32(E1000_IMS, E1000_IMS_TS);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   929
		break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   930
	default:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   931
		/* No work to do. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   932
		return;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   933
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   934
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   935
	/* Re-initialize the timer. */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   936
	if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   937
		struct timespec ts = ktime_to_timespec(ktime_get_real());
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   938
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   939
		igb_ptp_settime_i210(&adapter->ptp_caps, &ts);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   940
	} else {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   941
		timecounter_init(&adapter->tc, &adapter->cc,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   942
				 ktime_to_ns(ktime_get_real()));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   943
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   944
}