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

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *      include/asm-mips/mach-tx49xx/ioremap.h
   4  */
   5 #ifndef __ASM_MACH_TX49XX_IOREMAP_H
   6 #define __ASM_MACH_TX49XX_IOREMAP_H
   7
   8 #include <linux/types.h>
   9
  10 static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
  11         unsigned long flags)
  12 {
  13 #ifdef CONFIG_64BIT
  14 #define TXX9_DIRECTMAP_BASE     0xfff000000ul
  15 #else
  16 #define TXX9_DIRECTMAP_BASE     0xff000000ul
  17 #endif
  18         if (offset >= TXX9_DIRECTMAP_BASE &&
  19             offset < TXX9_DIRECTMAP_BASE + 0x400000)
  20                 return (void __iomem *)(unsigned long)(int)offset;
  21         return NULL;
  22 }
  23
  24 static inline int plat_iounmap(const volatile void __iomem *addr)
  25 {
  26         return (unsigned long)addr >=
  27                 (unsigned long)(int)(TXX9_DIRECTMAP_BASE & 0xffffffff);
  28 }
  29
  30 #endif /* __ASM_MACH_TX49XX_IOREMAP_H */