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

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