LXR linux/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
   7static inline phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size)
   8{
   9        return phys_addr;
  10}
  11
  12static 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
  36static 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
  44static 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_ */
  50