board/micronas/vct/ebi_smc911x.c

   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 <asm/io.h>
  22 #include "vct.h"
  23
  24 /*
  25  * EBI initialization for SMC911x access
  26  */
  27 int ebi_init_smc911x(void)
  28 {
  29         reg_write(EBI_DEV1_CONFIG1(EBI_BASE), 0x00003020);
  30         reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
  31
  32         reg_write(EBI_DEV1_TIM1_RD1(EBI_BASE), 0x00501100);
  33         reg_write(EBI_DEV1_TIM1_RD2(EBI_BASE), 0x0FF02111);
  34
  35         reg_write(EBI_DEV1_TIM_EXT(EBI_BASE), 0xFFF00000);
  36         reg_write(EBI_DEV1_EXT_ACC(EBI_BASE), 0x0FFFFFFF);
  37
  38         reg_write(EBI_DEV1_TIM1_WR1(EBI_BASE), 0x05001100);
  39         reg_write(EBI_DEV1_TIM1_WR2(EBI_BASE), 0x3FC21110);
  40
  41         return 0;
  42 }
  43
  44 /*
  45  * Accessor functions replacing the "weak" functions in
  46  * drivers/net/smc911x.c
  47  */
  48 u32 smc911x_reg_read(u32 addr)
  49 {
  50         volatile u32 data;
  51
  52         reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
  53         ebi_wait();
  54         reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
  55         ebi_wait();
  56         data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
  57
  58         return (data);
  59 }
  60
  61 void smc911x_reg_write(u32 addr, u32 data)
  62 {
  63         reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
  64         ebi_wait();
  65         reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
  66         reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
  67                   EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
  68         ebi_wait();
  69 }
  70
  71 void pkt_data_push(u32 addr, u32 data)
  72 {
  73         reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
  74         ebi_wait();
  75         reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
  76         reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
  77                   EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
  78         ebi_wait();
  79
  80         return;
  81 }
  82
  83 u32 pkt_data_pull(u32 addr)
  84 {
  85         volatile u32 data;
  86
  87         reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
  88         ebi_wait();
  89         reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
  90         ebi_wait();
  91         data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
  92
  93         return data;
  94 }