LXR linux/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
  10static 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
  24static 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 */
  31