LXR uboot/arch/mips/mach-bmips/include/ioremap.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ASM_MACH_BMIPS_IOREMAP_H
   3#define __ASM_MACH_BMIPS_IOREMAP_H
   4
   5#include <linux/types.h>
   6
   7/*
   8 * Allow physical addresses to be fixed up to help peripherals located
   9 * outside the low 32-bit range -- generic pass-through version.
  10 */
  11static inline phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr,
  12                                                phys_addr_t size)
  13{
  14        return phys_addr;
  15}
  16
  17static inline int is_bmips_internal_registers(phys_addr_t offset)
  18{
  19#if defined(CONFIG_SOC_BMIPS_BCM6338) || \
  20        defined(CONFIG_SOC_BMIPS_BCM6348) || \
  21        defined(CONFIG_SOC_BMIPS_BCM6358)
  22        if (offset >= 0xfffe0000)
  23                return 1;
  24#endif
  25
  26        return 0;
  27}
  28
  29static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
  30                                                unsigned long flags)
  31{
  32        if (is_bmips_internal_registers(offset))
  33                return (void __iomem *)offset;
  34
  35        return NULL;
  36}
  37
  38static inline int plat_iounmap(const volatile void __iomem *addr)
  39{
  40        return is_bmips_internal_registers((unsigned long)addr);
  41}
  42
  43#define _page_cachable_default  _CACHE_CACHABLE_NONCOHERENT
  44
  45#endif /* __ASM_MACH_BMIPS_IOREMAP_H */
  46