release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-gemini/mm.c

   1 /*
   2  *  Static mappings for Gemini
   3  *
   4  *  Copyright (C) 2001-2006 Storlink, Corp.
   5  *  Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  */
  12 #include <linux/mm.h>
  13 #include <linux/init.h>
  14
  15 #include <asm/mach/map.h>
  16
  17 #include <mach/hardware.h>
  18
  19 /* Page table mapping for I/O region */
  20 static struct map_desc gemini_io_desc[] __initdata = {
  21         {
  22                 .virtual        = IO_ADDRESS(GEMINI_GLOBAL_BASE),
  23                 .pfn            =__phys_to_pfn(GEMINI_GLOBAL_BASE),
  24                 .length         = SZ_512K,
  25                 .type           = MT_DEVICE,
  26         }, {
  27                 .virtual        = IO_ADDRESS(GEMINI_UART_BASE),
  28                 .pfn            = __phys_to_pfn(GEMINI_UART_BASE),
  29                 .length         = SZ_512K,
  30                 .type           = MT_DEVICE,
  31         }, {
  32                 .virtual        = IO_ADDRESS(GEMINI_TIMER_BASE),
  33                 .pfn            = __phys_to_pfn(GEMINI_TIMER_BASE),
  34                 .length         = SZ_512K,
  35                 .type           = MT_DEVICE,
  36         }, {
  37                 .virtual        = IO_ADDRESS(GEMINI_INTERRUPT_BASE),
  38                 .pfn            = __phys_to_pfn(GEMINI_INTERRUPT_BASE),
  39                 .length         = SZ_512K,
  40                 .type           = MT_DEVICE,
  41         }, {
  42                 .virtual        = IO_ADDRESS(GEMINI_POWER_CTRL_BASE),
  43                 .pfn            = __phys_to_pfn(GEMINI_POWER_CTRL_BASE),
  44                 .length         = SZ_512K,
  45                 .type           = MT_DEVICE,
  46         }, {
  47                 .virtual        = IO_ADDRESS(GEMINI_GPIO_BASE(0)),
  48                 .pfn            = __phys_to_pfn(GEMINI_GPIO_BASE(0)),
  49                 .length         = SZ_512K,
  50                 .type           = MT_DEVICE,
  51         }, {
  52                 .virtual        = IO_ADDRESS(GEMINI_GPIO_BASE(1)),
  53                 .pfn            = __phys_to_pfn(GEMINI_GPIO_BASE(1)),
  54                 .length         = SZ_512K,
  55                 .type           = MT_DEVICE,
  56         }, {
  57                 .virtual        = IO_ADDRESS(GEMINI_GPIO_BASE(2)),
  58                 .pfn            = __phys_to_pfn(GEMINI_GPIO_BASE(2)),
  59                 .length         = SZ_512K,
  60                 .type           = MT_DEVICE,
  61         }, {
  62                 .virtual        = IO_ADDRESS(GEMINI_FLASH_CTRL_BASE),
  63                 .pfn            = __phys_to_pfn(GEMINI_FLASH_CTRL_BASE),
  64                 .length         = SZ_512K,
  65                 .type           = MT_DEVICE,
  66         }, {
  67                 .virtual        = IO_ADDRESS(GEMINI_DRAM_CTRL_BASE),
  68                 .pfn            = __phys_to_pfn(GEMINI_DRAM_CTRL_BASE),
  69                 .length         = SZ_512K,
  70                 .type           = MT_DEVICE,
  71         }, {
  72                 .virtual        = IO_ADDRESS(GEMINI_GENERAL_DMA_BASE),
  73                 .pfn            = __phys_to_pfn(GEMINI_GENERAL_DMA_BASE),
  74                 .length         = SZ_512K,
  75                 .type           = MT_DEVICE,
  76         },
  77 };
  78
  79 void __init gemini_map_io(void)
  80 {
  81         iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc));
  82 }