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_BCM6338) || \
22 	defined(CONFIG_SOC_BMIPS_BCM6348) || \
23 	defined(CONFIG_SOC_BMIPS_BCM6358)
24 	if (offset >= 0xfffe0000)
25 		return 1;
26 #endif
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_bmips_internal_registers(offset))
35 		return (void __iomem *)offset;
36 
37 	return NULL;
38 }
39 
40 static inline int plat_iounmap(const volatile void __iomem *addr)
41 {
42 	return is_bmips_internal_registers((unsigned long)addr);
43 }
44 
45 #define _page_cachable_default	_CACHE_CACHABLE_NONCOHERENT
46 
47 #endif /* __ASM_MACH_BMIPS_IOREMAP_H */
48