arch/mips/include/asm/mach-bcm63xx/ioremap.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef BCM63XX_IOREMAP_H_
   3 #define BCM63XX_IOREMAP_H_
   4
   5 #include <bcm63xx_cpu.h>
   6
   7 static inline phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size)
   8 {
   9         return phys_addr;
  10 }
  11
  12 static inline int is_bcm63xx_internal_registers(phys_addr_t offset)
  13 {
  14         switch (bcm63xx_get_cpu_id()) {
  15         case BCM3368_CPU_ID:
  16                 if (offset >= 0xfff80000)
  17                         return 1;
  18                 break;
  19         case BCM6338_CPU_ID:
  20         case BCM6345_CPU_ID:
  21         case BCM6348_CPU_ID:
  22         case BCM6358_CPU_ID:
  23                 if (offset >= 0xfff00000)
  24                         return 1;
  25                 break;
  26         case BCM6328_CPU_ID:
  27         case BCM6362_CPU_ID:
  28         case BCM6368_CPU_ID:
  29                 if (offset >= 0xb0000000 && offset < 0xb1000000)
  30                         return 1;
  31                 break;
  32         }
  33         return 0;
  34 }
  35
  36 static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
  37                                          unsigned long flags)
  38 {
  39         if (is_bcm63xx_internal_registers(offset))
  40                 return (void __iomem *)offset;
  41         return NULL;
  42 }
  43
  44 static inline int plat_iounmap(const volatile void __iomem *addr)
  45 {
  46         return is_bcm63xx_internal_registers((unsigned long)addr);
  47 }
  48
  49 #endif /* BCM63XX_IOREMAP_H_ */