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

This patch adds functions to configure ethernet hardware.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Iyappan Subramanian 2017-03-07 17:08:42 -08:00 committed by David S. Miller
parent 81ccd0cab2
commit 272d6dc1fc
2 changed files with 114 additions and 0 deletions
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71
drivers/net/ethernet/apm/xgene-v2/enet.c 100644
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/*
* 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;
}

43
drivers/net/ethernet/apm/xgene-v2/enet.h 100644
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/*
* 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__ */