arch/arm/mach-tcc8k/io.c

   1 /*
   2  * linux/arch/arm/mach-tcc8k/io.c
   3  *
   4  * (C) 2009 Hans J. Koch <hjk@linutronix.de>
   5  *
   6  * derived from TCC83xx io.c
   7  * Copyright (C) Telechips, Inc.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/io.h>
  16 #include <linux/kernel.h>
  17
  18 #include <asm/mach/map.h>
  19
  20 #include <mach/tcc8k-regs.h>
  21
  22 /*
  23  * The machine specific code may provide the extra mapping besides the
  24  * default mapping provided here.
  25  */
  26 static struct map_desc tcc8k_io_desc[] __initdata = {
  27         {
  28                 .virtual        = (unsigned long)CS1_BASE_VIRT,
  29                 .pfn            = __phys_to_pfn(CS1_BASE),
  30                 .length         = CS1_SIZE,
  31                 .type           = MT_DEVICE,
  32         }, {
  33                 .virtual        = (unsigned long)AHB_PERI_BASE_VIRT,
  34                 .pfn            = __phys_to_pfn(AHB_PERI_BASE),
  35                 .length         = AHB_PERI_SIZE,
  36                 .type           = MT_DEVICE,
  37         }, {
  38                 .virtual        = (unsigned long)APB0_PERI_BASE_VIRT,
  39                 .pfn            = __phys_to_pfn(APB0_PERI_BASE),
  40                 .length         = APB0_PERI_SIZE,
  41                 .type           = MT_DEVICE,
  42         }, {
  43                 .virtual        = (unsigned long)APB1_PERI_BASE_VIRT,
  44                 .pfn            = __phys_to_pfn(APB1_PERI_BASE),
  45                 .length         = APB1_PERI_SIZE,
  46                 .type           = MT_DEVICE,
  47         }, {
  48                 .virtual        = (unsigned long)EXT_MEM_CTRL_BASE_VIRT,
  49                 .pfn            = __phys_to_pfn(EXT_MEM_CTRL_BASE),
  50                 .length         = EXT_MEM_CTRL_SIZE,
  51                 .type           = MT_DEVICE,
  52         },
  53 };
  54
  55 /*
  56  * Maps common IO regions for tcc8k.
  57  *
  58  */
  59 void __init tcc8k_map_common_io(void)
  60 {
  61         iotable_init(tcc8k_io_desc, ARRAY_SIZE(tcc8k_io_desc));
  62 }