xref: /linux/arch/mips/include/asm/mach-bcm63xx/ioremap.h (revision 4b4193256c8d3bc3a5397b5cd9494c2ad386317d)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef BCM63XX_IOREMAP_H_
3 #define BCM63XX_IOREMAP_H_
4 
5 #include <bcm63xx_cpu.h>
6 
is_bcm63xx_internal_registers(phys_addr_t offset)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 
plat_ioremap(phys_addr_t offset,unsigned long size,unsigned long flags)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 
plat_iounmap(const volatile void __iomem * addr)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_ */
45