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 int is_bcm63xx_internal_registers(phys_addr_t offset)
   8 {
   9         switch (bcm63xx_get_cpu_id()) {
  10         case BCM3368_CPU_ID:
  11                 if (offset >= 0xfff80000)
  12                         return 1;
  13                 break;
  14         case BCM6338_CPU_ID:
  15         case BCM6345_CPU_ID:
  16         case BCM6348_CPU_ID:
  17         case BCM6358_CPU_ID:
  18                 if (offset >= 0xfff00000)
  19                         return 1;
  20                 break;
  21         case BCM6328_CPU_ID:
  22         case BCM6362_CPU_ID:
  23         case BCM6368_CPU_ID:
  24                 if (offset >= 0xb0000000 && offset < 0xb1000000)
  25                         return 1;
  26                 break;
  27         }
  28         return 0;
  29 }
  30
  31 static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
  32                                          unsigned long flags)
  33 {
  34         if (is_bcm63xx_internal_registers(offset))
  35                 return (void __iomem *)offset;
  36         return NULL;
  37 }
  38
  39 static inline int plat_iounmap(const volatile void __iomem *addr)
  40 {
  41         return is_bcm63xx_internal_registers((unsigned long)addr);
  42 }
  43
  44 #endif /* BCM63XX_IOREMAP_H_ */