LXR uboot/board/micronas/vct/ebi

   1/*
   2 * (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License as
   6 * published by the Free Software Foundation; either version 2 of
   7 * the License, or (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  17 * MA 02111-1307 USA
  18 */
  19
  20#include <common.h>
  21#include <netdev.h>
  22#include <asm/io.h>
  23#include "vct.h"
  24
  25/*
  26 * EBI initialization for SMC911x access
  27 */
  28int ebi_init_smc911x(void)
  29{
  30        reg_write(EBI_DEV1_CONFIG1(EBI_BASE), 0x00003020);
  31        reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
  32
  33        reg_write(EBI_DEV1_TIM1_RD1(EBI_BASE), 0x00501100);
  34        reg_write(EBI_DEV1_TIM1_RD2(EBI_BASE), 0x0FF02111);
  35
  36        reg_write(EBI_DEV1_TIM_EXT(EBI_BASE), 0xFFF00000);
  37        reg_write(EBI_DEV1_EXT_ACC(EBI_BASE), 0x0FFFFFFF);
  38
  39        reg_write(EBI_DEV1_TIM1_WR1(EBI_BASE), 0x05001100);
  40        reg_write(EBI_DEV1_TIM1_WR2(EBI_BASE), 0x3FC21110);
  41
  42        return 0;
  43}
  44
  45/*
  46 * Accessor functions replacing the "weak" functions in
  47 * drivers/net/smc911x.c
  48 */
  49u32 smc911x_reg_read(struct eth_device *dev, u32 addr)
  50{
  51        volatile u32 data;
  52
  53        addr += dev->iobase;
  54        reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
  55        ebi_wait();
  56        reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
  57        ebi_wait();
  58        data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
  59
  60        return (data);
  61}
  62
  63void smc911x_reg_write(struct eth_device *dev, u32 addr, u32 data)
  64{
  65        addr += dev->iobase;
  66        reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
  67        ebi_wait();
  68        reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
  69        reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
  70                  EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
  71        ebi_wait();
  72}
  73
  74void pkt_data_push(struct eth_device *dev, u32 addr, u32 data)
  75{
  76        addr += dev->iobase;
  77        reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
  78        ebi_wait();
  79        reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
  80        reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
  81                  EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
  82        ebi_wait();
  83
  84        return;
  85}
  86
  87u32 pkt_data_pull(struct eth_device *dev, u32 addr)
  88{
  89        volatile u32 data;
  90
  91        addr += dev->iobase;
  92        reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
  93        ebi_wait();
  94        reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
  95        ebi_wait();
  96        data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
  97
  98        return data;
  99}
 100
 101int board_eth_init(bd_t *bis)
 102{
 103        int rc = 0;
 104#ifdef CONFIG_SMC911X
 105        rc = smc911x_initialize(0, CONFIG_DRIVER_SMC911X_BASE);
 106#endif
 107        return rc;
 108}
 109