arch/arm/plat-mxc/include/mach/io.h

   1 /*
   2  *  Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   3  */
   4
   5 /*
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef __ASM_ARCH_MXC_IO_H__
  12 #define __ASM_ARCH_MXC_IO_H__
  13
  14 /* Allow IO space to be anywhere in the memory */
  15 #define IO_SPACE_LIMIT 0xffffffff
  16
  17 #if defined(CONFIG_SOC_IMX31) || defined(CONFIG_SOC_IMX35)
  18 #include <mach/hardware.h>
  19
  20 #define __arch_ioremap __imx_ioremap
  21 #define __arch_iounmap __iounmap
  22
  23 #define addr_in_module(addr, mod) \
  24         ((unsigned long)(addr) - mod ## _BASE_ADDR < mod ## _SIZE)
  25
  26 static inline void __iomem *
  27 __imx_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
  28 {
  29         if (mtype == MT_DEVICE && (cpu_is_mx31() || cpu_is_mx35())) {
  30                 /*
  31                  * Access all peripherals below 0x80000000 as nonshared device
  32                  * on mx3, but leave l2cc alone.  Otherwise cache corruptions
  33                  * can occur.
  34                  */
  35                 if (phys_addr < 0x80000000 &&
  36                                 !addr_in_module(phys_addr, MX3x_L2CC))
  37                         mtype = MT_DEVICE_NONSHARED;
  38         }
  39
  40         return __arm_ioremap(phys_addr, size, mtype);
  41 }
  42 #endif
  43
  44 /* io address mapping macro */
  45 #define __io(a)         __typesafe_io(a)
  46
  47 #define __mem_pci(a)    (a)
  48
  49 #endif