92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/* 10G controller driver for Samsung SoCs
|
|
*
|
|
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com
|
|
*
|
|
* Author: Siva Reddy Kallam <siva.kallam@samsung.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/bitops.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/phy.h>
|
|
#include "sxgbe_common.h"
|
|
#include "sxgbe_xpcs.h"
|
|
|
|
static int sxgbe_xpcs_read(struct net_device *ndev, unsigned int reg)
|
|
{
|
|
u32 value;
|
|
struct sxgbe_priv_data *priv = netdev_priv(ndev);
|
|
|
|
value = readl(priv->ioaddr + XPCS_OFFSET + reg);
|
|
|
|
return value;
|
|
}
|
|
|
|
static int sxgbe_xpcs_write(struct net_device *ndev, int reg, int data)
|
|
{
|
|
struct sxgbe_priv_data *priv = netdev_priv(ndev);
|
|
|
|
writel(data, priv->ioaddr + XPCS_OFFSET + reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sxgbe_xpcs_init(struct net_device *ndev)
|
|
{
|
|
u32 value;
|
|
|
|
value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
|
|
/* 10G XAUI mode */
|
|
sxgbe_xpcs_write(ndev, SR_PCS_CONTROL2, XPCS_TYPE_SEL_X);
|
|
sxgbe_xpcs_write(ndev, VR_PCS_MMD_XAUI_MODE_CONTROL, XPCS_XAUI_MODE);
|
|
sxgbe_xpcs_write(ndev, VR_PCS_MMD_XAUI_MODE_CONTROL, value | BIT(13));
|
|
sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value | BIT(11));
|
|
|
|
do {
|
|
value = sxgbe_xpcs_read(ndev, VR_PCS_MMD_DIGITAL_STATUS);
|
|
} while ((value & XPCS_QSEQ_STATE_MPLLOFF) == XPCS_QSEQ_STATE_STABLE);
|
|
|
|
value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
|
|
sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value & ~BIT(11));
|
|
|
|
do {
|
|
value = sxgbe_xpcs_read(ndev, VR_PCS_MMD_DIGITAL_STATUS);
|
|
} while ((value & XPCS_QSEQ_STATE_MPLLOFF) != XPCS_QSEQ_STATE_STABLE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sxgbe_xpcs_init_1G(struct net_device *ndev)
|
|
{
|
|
int value;
|
|
|
|
/* 10GBASE-X PCS (1G) mode */
|
|
sxgbe_xpcs_write(ndev, SR_PCS_CONTROL2, XPCS_TYPE_SEL_X);
|
|
sxgbe_xpcs_write(ndev, VR_PCS_MMD_XAUI_MODE_CONTROL, XPCS_XAUI_MODE);
|
|
value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
|
|
sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value & ~BIT(13));
|
|
|
|
value = sxgbe_xpcs_read(ndev, SR_MII_MMD_CONTROL);
|
|
sxgbe_xpcs_write(ndev, SR_MII_MMD_CONTROL, value | BIT(6));
|
|
sxgbe_xpcs_write(ndev, SR_MII_MMD_CONTROL, value & ~BIT(13));
|
|
value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
|
|
sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value | BIT(11));
|
|
|
|
do {
|
|
value = sxgbe_xpcs_read(ndev, VR_PCS_MMD_DIGITAL_STATUS);
|
|
} while ((value & XPCS_QSEQ_STATE_MPLLOFF) != XPCS_QSEQ_STATE_STABLE);
|
|
|
|
value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
|
|
sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value & ~BIT(11));
|
|
|
|
/* Auto Negotiation cluase 37 enable */
|
|
value = sxgbe_xpcs_read(ndev, SR_MII_MMD_CONTROL);
|
|
sxgbe_xpcs_write(ndev, SR_MII_MMD_CONTROL, value | BIT(12));
|
|
|
|
return 0;
|
|
}
|