Commit 1a64f8dc authored by Egor Pomozov's avatar Egor Pomozov Committed by David S. Miller
Browse files

net: aquantia: PTP skeleton declarations and callbacks 



Here we add basic function for PTP clock register/unregister.
We also declare FW/HW capability bits used to control PTP feature on device.

PTP device is created if network card has appropriate FW that has PTP
enabled in config. HW supports timestamping for PTPv2 802.AS1 and
PTPv2 IPv4 UDP packets.

It also supports basic PTP callbacks for getting/setting time, adjusting
frequency and time as well.

Signed-off-by: default avatarEgor Pomozov <epomozov@marvell.com>
Co-developed-by: default avatarSergey Samoilenko <sergey.samoilenko@aquantia.com>
Signed-off-by: default avatarSergey Samoilenko <sergey.samoilenko@aquantia.com>
Co-developed-by: default avatarDmitry Bezrukov <dmitry.bezrukov@aquantia.com>
Signed-off-by: default avatarDmitry Bezrukov <dmitry.bezrukov@aquantia.com>
Signed-off-by: default avatarIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 337d866a

drivers/net/ethernet/aquantia/atlantic/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ atlantic-objs := aq_main.o \ 
	aq_ethtool.o \

	aq_drvinfo.o \

	aq_filters.o \

	aq_ptp.o \

	hw_atl/hw_atl_a0.o \

	hw_atl/hw_atl_b0.o \

	hw_atl/hw_atl_utils.o \

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

+9 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * aQuantia Corporation Network Driver

 * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved

 * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved

 */



/* File aq_nic.c: Definition of common code for NIC. */
@@ -12,6 +12,7 @@ 
#include "aq_hw.h"

#include "aq_pci_func.h"

#include "aq_main.h"

#include "aq_ptp.h"



#include <linux/moduleparam.h>

#include <linux/netdevice.h>
@@ -331,6 +332,10 @@ int aq_nic_init(struct aq_nic_s *self) 
		self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])

		aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);



	err = aq_ptp_init(self, self->irqvecs - 1);

	if (err < 0)

		goto err_exit;



	netif_carrier_off(self->ndev);



err_exit:
@@ -972,6 +977,9 @@ void aq_nic_deinit(struct aq_nic_s *self) 
		self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])

		aq_vec_deinit(aq_vec);



	aq_ptp_unregister(self);

	aq_ptp_free(self);



	if (likely(self->aq_fw_ops->deinit)) {

		mutex_lock(&self->fwreq_mutex);

		self->aq_fw_ops->deinit(self->aq_hw);

drivers/net/ethernet/aquantia/atlantic/aq_nic.h

+4 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * aQuantia Corporation Network Driver

 * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved

 * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved

 */



/* File aq_nic.h: Declaration of common code for NIC. */
@@ -17,6 +17,7 @@ struct aq_ring_s; 
struct aq_hw_ops;

struct aq_fw_s;

struct aq_vec_s;

struct aq_ptp_s;



struct aq_nic_cfg_s {

	const struct aq_hw_caps_s *aq_hw_caps;
@@ -108,6 +109,8 @@ struct aq_nic_s { 
	u32 irqvecs;

	/* mutex to serialize FW interface access operations */

	struct mutex fwreq_mutex;

	/* PTP support */

	struct aq_ptp_s *aq_ptp;

	struct aq_hw_rx_fltrs_s aq_hw_rx_fltrs;

};

drivers/net/ethernet/aquantia/atlantic/aq_ptp.c

0 → 100644
+84 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/* Aquantia Corporation Network Driver

 * Copyright (C) 2014-2019 Aquantia Corporation. All rights reserved

 */



/* File aq_ptp.c:

 * Definition of functions for Linux PTP support.

 */



#include <linux/ptp_clock_kernel.h>

#include <linux/clocksource.h>



#include "aq_nic.h"

#include "aq_ptp.h"



struct aq_ptp_s {

	struct aq_nic_s *aq_nic;

	struct ptp_clock *ptp_clock;

	struct ptp_clock_info ptp_info;

};



static struct ptp_clock_info aq_ptp_clock = {

	.owner		= THIS_MODULE,

	.name		= "atlantic ptp",

	.n_ext_ts	= 0,

	.pps		= 0,

	.n_per_out	= 0,

	.n_pins		= 0,

	.pin_config	= NULL,

};



int aq_ptp_init(struct aq_nic_s *aq_nic, unsigned int idx_vec)

{

	struct hw_atl_utils_mbox mbox;

	struct aq_ptp_s *aq_ptp;

	int err = 0;



	hw_atl_utils_mpi_read_stats(aq_nic->aq_hw, &mbox);



	if (!(mbox.info.caps_ex & BIT(CAPS_EX_PHY_PTP_EN))) {

		aq_nic->aq_ptp = NULL;

		return 0;

	}



	aq_ptp = kzalloc(sizeof(*aq_ptp), GFP_KERNEL);

	if (!aq_ptp) {

		err = -ENOMEM;

		goto err_exit;

	}



	aq_ptp->aq_nic = aq_nic;



	aq_ptp->ptp_info = aq_ptp_clock;



	aq_nic->aq_ptp = aq_ptp;



	return 0;



err_exit:

	kfree(aq_ptp);

	aq_nic->aq_ptp = NULL;

	return err;

}



void aq_ptp_unregister(struct aq_nic_s *aq_nic)

{

	struct aq_ptp_s *aq_ptp = aq_nic->aq_ptp;



	if (!aq_ptp)

		return;



	ptp_clock_unregister(aq_ptp->ptp_clock);

}



void aq_ptp_free(struct aq_nic_s *aq_nic)

{

	struct aq_ptp_s *aq_ptp = aq_nic->aq_ptp;



	if (!aq_ptp)

		return;



	kfree(aq_ptp);

	aq_nic->aq_ptp = NULL;

}

drivers/net/ethernet/aquantia/atlantic/aq_ptp.h

0 → 100644
+22 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/* Aquantia Corporation Network Driver

 * Copyright (C) 2014-2019 Aquantia Corporation. All rights reserved

 */



/* File aq_ptp.h: Declaration of PTP functions.

 */

#ifndef AQ_PTP_H

#define AQ_PTP_H



#include <linux/net_tstamp.h>

#include <linux/version.h>



/* Common functions */

int aq_ptp_init(struct aq_nic_s *aq_nic, unsigned int idx_vec);



void aq_ptp_unregister(struct aq_nic_s *aq_nic);

void aq_ptp_free(struct aq_nic_s *aq_nic);



void aq_ptp_clock_init(struct aq_nic_s *aq_nic);



#endif /* AQ_PTP_H */

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