uboot-phytec

// SPDX-License-Identifier: GPL-2.0+

/*

 * Cirrus Logic CS8900A Ethernet

 *

 * (C) 2009 Ben Warren , biggerbadderben@gmail.com

 *     Converted to use CONFIG_NET_MULTI API

 *

 * (C) 2003 Wolfgang Denk, wd@denx.de

 *     Extension to synchronize ethaddr environment variable

 *     against value in EEPROM

 *

 * (C) Copyright 2002

 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>

 * Marius Groeger <mgroeger@sysgo.de>

 *

 * Copyright (C) 1999 Ben Williamson <benw@pobox.com>

 *

 * This program is loaded into SRAM in bootstrap mode, where it waits

 * for commands on UART1 to read and write memory, jump to code etc.

 * A design goal for this program is to be entirely independent of the

 * target board.  Anything with a CL-PS7111 or EP7211 should be able to run

 * this code in bootstrap mode.  All the board specifics can be handled on

 * the host.

 */

​

#include <common.h>

#include <command.h>

#include <asm/io.h>

#include <net.h>

#include <malloc.h>

#include "cs8900.h"

​

#undef DEBUG

​

/* packet page register access functions */

​

#ifdef CONFIG_CS8900_BUS32

​

#define REG_WRITE(v, a) writel((v),(a))

#define REG_READ(a) readl((a))

​

/* we don't need 16 bit initialisation on 32 bit bus */

#define get_reg_init_bus(r,d) get_reg((r),(d))

​

#else

​

#define REG_WRITE(v, a) writew((v),(a))

#define REG_READ(a) readw((a))

​

static u16 get_reg_init_bus(struct eth_device *dev, int regno)

{

    /* force 16 bit busmode */

    struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);

    uint8_t volatile * const iob = (uint8_t volatile * const)dev->iobase;

​

    readb(iob);

    readb(iob + 1);

    readb(iob);

    readb(iob + 1);

    readb(iob);

​

    REG_WRITE(regno, &priv->regs->pptr);

    return REG_READ(&priv->regs->pdata);

}

#endif

​

static u16 get_reg(struct eth_device *dev, int regno)

{

    struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);

    REG_WRITE(regno, &priv->regs->pptr);

    return REG_READ(&priv->regs->pdata);

}

​

​

static void put_reg(struct eth_device *dev, int regno, u16 val)

{

    struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);

    REG_WRITE(regno, &priv->regs->pptr);

    REG_WRITE(val, &priv->regs->pdata);

}

​

static void cs8900_reset(struct eth_device *dev)

{

    int tmo;

    u16 us;

​

    /* reset NIC */

    put_reg(dev, PP_SelfCTL, get_reg(dev, PP_SelfCTL) | PP_SelfCTL_Reset);

​

    /* wait for 200ms */

    udelay(200000);

    /* Wait until the chip is reset */