include/asm-mips/mach-tx49xx/ioremap.h

   1 /*
   2  *      include/asm-mips/mach-tx49xx/ioremap.h
   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
   6  *      as published by the Free Software Foundation; either version
   7  *      2 of the License, or (at your option) any later version.
   8  */
   9 #ifndef __ASM_MACH_TX49XX_IOREMAP_H
  10 #define __ASM_MACH_TX49XX_IOREMAP_H
  11
  12 #include <linux/types.h>
  13
  14 /*
  15  * Allow physical addresses to be fixed up to help peripherals located
  16  * outside the low 32-bit range -- generic pass-through version.
  17  */
  18 static inline phys_t fixup_bigphys_addr(phys_t phys_addr, phys_t size)
  19 {
  20         return phys_addr;
  21 }
  22
  23 static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size,
  24         unsigned long flags)
  25 {
  26 #ifdef CONFIG_64BIT
  27 #define TXX9_DIRECTMAP_BASE     0xfff000000ul
  28 #else
  29 #define TXX9_DIRECTMAP_BASE     0xff000000ul
  30 #endif
  31         if (offset >= TXX9_DIRECTMAP_BASE &&
  32             offset < TXX9_DIRECTMAP_BASE + 0x400000)
  33                 return (void __iomem *)(unsigned long)(int)offset;
  34         return NULL;
  35 }
  36
  37 static inline int plat_iounmap(const volatile void __iomem *addr)
  38 {
  39         return (unsigned long)addr >=
  40                 (unsigned long)(int)(TXX9_DIRECTMAP_BASE & 0xffffffff);
  41 }
  42
  43 #endif /* __ASM_MACH_TX49XX_IOREMAP_H */