drivers: net: xgene-v2: Add ethernet hardware configuration

/*

 * Applied Micro X-Gene SoC Ethernet v2 Driver

 *

 * Copyright (c) 2017, Applied Micro Circuits Corporation

 * Author(s): Iyappan Subramanian <isubramanian@apm.com>

 *	      Keyur Chudgar <kchudgar@apm.com>

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the

 * Free Software Foundation;  either version 2 of the  License, or (at your

 * option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#include "main.h"

void xge_wr_csr(struct xge_pdata *pdata, u32 offset, u32 val)

{

	void __iomem *addr = pdata->resources.base_addr + offset;

	iowrite32(val, addr);

}

u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset)

{

	void __iomem *addr = pdata->resources.base_addr + offset;

	return ioread32(addr);

}

int xge_port_reset(struct net_device *ndev)

{

	struct xge_pdata *pdata = netdev_priv(ndev);

	xge_wr_csr(pdata, ENET_SRST, 0x3);

	xge_wr_csr(pdata, ENET_SRST, 0x2);

	xge_wr_csr(pdata, ENET_SRST, 0x0);

	xge_wr_csr(pdata, ENET_SHIM, DEVM_ARAUX_COH | DEVM_AWAUX_COH);

	return 0;

}

static void xge_traffic_resume(struct net_device *ndev)

{

	struct xge_pdata *pdata = netdev_priv(ndev);

	xge_wr_csr(pdata, CFG_FORCE_LINK_STATUS_EN, 1);

	xge_wr_csr(pdata, FORCE_LINK_STATUS, 1);

	xge_wr_csr(pdata, CFG_LINK_AGGR_RESUME, 1);

	xge_wr_csr(pdata, RX_DV_GATE_REG, 1);

}

int xge_port_init(struct net_device *ndev)

{

	struct xge_pdata *pdata = netdev_priv(ndev);

	pdata->phy_speed = SPEED_1000;

	xge_mac_init(pdata);

	xge_traffic_resume(ndev);

	return 0;

}

/*

 * Applied Micro X-Gene SoC Ethernet v2 Driver

 *

 * Copyright (c) 2017, Applied Micro Circuits Corporation

 * Author(s): Iyappan Subramanian <isubramanian@apm.com>

 *	      Keyur Chudgar <kchudgar@apm.com>

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the

 * Free Software Foundation;  either version 2 of the  License, or (at your

 * option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef __XGENE_ENET_V2_ENET_H__

#define __XGENE_ENET_V2_ENET_H__

#define ENET_CLKEN		0xc008

#define ENET_SRST		0xc000

#define ENET_SHIM		0xc010

#define CFG_MEM_RAM_SHUTDOWN	0xd070

#define BLOCK_MEM_RDY		0xd074

#define DEVM_ARAUX_COH		BIT(19)

#define DEVM_AWAUX_COH		BIT(3)

#define CFG_FORCE_LINK_STATUS_EN	0x229c

#define FORCE_LINK_STATUS		0x22a0

#define CFG_LINK_AGGR_RESUME		0x27c8

#define RX_DV_GATE_REG			0x2dfc

void xge_wr_csr(struct xge_pdata *pdata, u32 offset, u32 val);

u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset);

int xge_port_reset(struct net_device *ndev);

#endif  /* __XGENE_ENET_V2_ENET__H__ */