uboot-phytec

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

/*

 * sh_eth.c - Driver for Renesas ethernet controller.

 *

 * Copyright (C) 2008, 2011 Renesas Solutions Corp.

 * Copyright (c) 2008, 2011, 2014 2014 Nobuhiro Iwamatsu

 * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>

 * Copyright (C) 2013, 2014 Renesas Electronics Corporation

 */

​

#include <config.h>

#include <common.h>

#include <env.h>

#include <malloc.h>

#include <net.h>

#include <netdev.h>

#include <miiphy.h>

#include <linux/errno.h>

#include <asm/io.h>

​

#ifdef CONFIG_DM_ETH

#include <clk.h>

#include <dm.h>

#include <linux/mii.h>

#include <asm/gpio.h>

#endif

​

#include "sh_eth.h"

​

#ifndef CONFIG_SH_ETHER_USE_PORT

# error "Please define CONFIG_SH_ETHER_USE_PORT"

#endif

#ifndef CONFIG_SH_ETHER_PHY_ADDR

# error "Please define CONFIG_SH_ETHER_PHY_ADDR"

#endif

​

#if defined(CONFIG_SH_ETHER_CACHE_WRITEBACK) && \

    !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)

#define flush_cache_wback(addr, len)    \

        flush_dcache_range((unsigned long)addr, \

        (unsigned long)(addr + ALIGN(len, CONFIG_SH_ETHER_ALIGNE_SIZE)))

#else

#define flush_cache_wback(...)

#endif

​

#if defined(CONFIG_SH_ETHER_CACHE_INVALIDATE) && defined(CONFIG_ARM)

#define invalidate_cache(addr, len)     \

    {   \

        unsigned long line_size = CONFIG_SH_ETHER_ALIGNE_SIZE;  \

        unsigned long start, end;   \

        \

        start = (unsigned long)addr;    \

        end = start + len;      \

        start &= ~(line_size - 1);  \

        end = ((end + line_size - 1) & ~(line_size - 1));   \

        \

        invalidate_dcache_range(start, end);    \

    }

#else

#define invalidate_cache(...)

#endif

​

#define TIMEOUT_CNT 1000

​

static int sh_eth_send_common(struct sh_eth_dev *eth, void *packet, int len)

{

    int ret = 0, timeout;

    struct sh_eth_info *port_info = &eth->port_info[eth->port];

​

    if (!packet || len > 0xffff) {

        printf(SHETHER_NAME ": %s: Invalid argument\n", __func__);

        ret = -EINVAL;

        goto err;

    }

​

    /* packet must be a 4 byte boundary */

    if ((uintptr_t)packet & 3) {

        printf(SHETHER_NAME ": %s: packet not 4 byte aligned\n"

                , __func__);

        ret = -EFAULT;

        goto err;

    }

​

    /* Update tx descriptor */

    flush_cache_wback(packet, len);

    port_info->tx_desc_cur->td2 = ADDR_TO_PHY(packet);

    port_info->tx_desc_cur->td1 = len << 16;

    /* Must preserve the end of descriptor list indication */

    if (port_info->tx_desc_cur->td0 & TD_TDLE)

        port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP | TD_TDLE;

    else

        port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP;