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/*
* Copyright 2009-2011 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/types.h>
#include <asm/io.h>
#include <fsl_dtsec.h>
#include <fsl_mdio.h>
#include <phy.h>
#include "fm.h"
#define RCTRL_INIT (RCTRL_GRS | RCTRL_UPROM)
#define TCTRL_INIT TCTRL_GTS
#define MACCFG1_INIT MACCFG1_SOFT_RST
#define MACCFG2_INIT (MACCFG2_PRE_LEN(0x7) | MACCFG2_LEN_CHECK | \
MACCFG2_PAD_CRC | MACCFG2_FULL_DUPLEX | \
MACCFG2_IF_MODE_NIBBLE)
/* MAXFRM - maximum frame length register */
#define MAXFRM_MASK 0x00003fff
static void dtsec_init_mac(struct fsl_enet_mac *mac)
{
struct dtsec *regs = mac->base;
/* soft reset */
out_be32(®s->maccfg1, MACCFG1_SOFT_RST);
udelay(1000);
/* clear soft reset, Rx/Tx MAC disable */
out_be32(®s->maccfg1, 0);
/* graceful stop rx */
out_be32(®s->rctrl, RCTRL_INIT);
udelay(1000);
/* graceful stop tx */
out_be32(®s->tctrl, TCTRL_INIT);
udelay(1000);
/* disable all interrupts */
out_be32(®s->imask, IMASK_MASK_ALL);
/* clear all events */
out_be32(®s->ievent, IEVENT_CLEAR_ALL);
/* set the max Rx length */
out_be32(®s->maxfrm, mac->max_rx_len & MAXFRM_MASK);
/* set the ecntrl to reset value */
out_be32(®s->ecntrl, ECNTRL_DEFAULT);
/*
* Rx length check, no strip CRC for Rx, pad and append CRC for Tx,
* full duplex
*/
out_be32(®s->maccfg2, MACCFG2_INIT);
}
static void dtsec_enable_mac(struct fsl_enet_mac *mac)
{
struct dtsec *regs = mac->base;
/* enable Rx/Tx MAC */
setbits_be32(®s->maccfg1, MACCFG1_RXTX_EN);
/* clear the graceful Rx stop */
clrbits_be32(®s->rctrl, RCTRL_GRS);
/* clear the graceful Tx stop */
clrbits_be32(®s->tctrl, TCTRL_GTS);
}
static void dtsec_disable_mac(struct fsl_enet_mac *mac)
{
struct dtsec *regs = mac->base;
/* graceful Rx stop */
setbits_be32(®s->rctrl, RCTRL_GRS);
/* graceful Tx stop */
setbits_be32(®s->tctrl, TCTRL_GTS);
/* disable Rx/Tx MAC */
clrbits_be32(®s->maccfg1, MACCFG1_RXTX_EN);
}
static void dtsec_set_mac_addr(struct fsl_enet_mac *mac, u8 *mac_addr)
{
struct dtsec *regs = mac->base;
u32 mac_addr1, mac_addr2;
/*
* if a station address of 0x12345678ABCD, perform a write to
* MACSTNADDR1 of 0xCDAB7856, MACSTNADDR2 of 0x34120000
*/
mac_addr1 = (mac_addr[5] << 24) | (mac_addr[4] << 16) | \
(mac_addr[3] << 8) | (mac_addr[2]);
out_be32(®s->macstnaddr1, mac_addr1);
mac_addr2 = ((mac_addr[1] << 24) | (mac_addr[0] << 16)) & 0xffff0000;
out_be32(®s->macstnaddr2, mac_addr2);
}
static void dtsec_set_interface_mode(struct fsl_enet_mac *mac,
phy_interface_t type, int speed)
{
struct dtsec *regs = mac->base;
u32 ecntrl, maccfg2;
/* clear all bits relative with interface mode */
ecntrl = in_be32(®s->ecntrl);
ecntrl &= ~(ECNTRL_TBIM | ECNTRL_GMIIM | ECNTRL_RPM |
ECNTRL_R100M | ECNTRL_SGMIIM);
maccfg2 = in_be32(®s->maccfg2);
maccfg2 &= ~MACCFG2_IF_MODE_MASK;
if (speed == SPEED_1000)
maccfg2 |= MACCFG2_IF_MODE_BYTE;
else
maccfg2 |= MACCFG2_IF_MODE_NIBBLE;
/* set interface mode */
switch (type) {
case PHY_INTERFACE_MODE_GMII:
ecntrl |= ECNTRL_GMIIM;
break;
case PHY_INTERFACE_MODE_RGMII:
ecntrl |= (ECNTRL_GMIIM | ECNTRL_RPM);
if (speed == SPEED_100)
ecntrl |= ECNTRL_R100M;
break;
case PHY_INTERFACE_MODE_RMII:
if (speed == SPEED_100)
ecntrl |= ECNTRL_R100M;
break;
case PHY_INTERFACE_MODE_SGMII:
ecntrl |= (ECNTRL_SGMIIM | ECNTRL_TBIM);
if (speed == SPEED_100)
ecntrl |= ECNTRL_R100M;
break;
default:
break;
}
out_be32(®s->ecntrl, ecntrl);
out_be32(®s->maccfg2, maccfg2);
}
void init_dtsec(struct fsl_enet_mac *mac, void *base,
void *phyregs, int max_rx_len)
{
mac->base = base;
mac->phyregs = phyregs;
mac->max_rx_len = max_rx_len;
mac->init_mac = dtsec_init_mac;
mac->enable_mac = dtsec_enable_mac;
mac->disable_mac = dtsec_disable_mac;
mac->set_mac_addr = dtsec_set_mac_addr;
mac->set_if_mode = dtsec_set_interface_mode;
}
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