1 /*
2  *	include/asm-mips/mach-tx49xx/ioremap.h
3  *
4  *	This program is free software; you can redistribute it and/or
5  *	modify it under the terms of the GNU General Public License
6  *	as published by the Free Software Foundation; either version
7  *	2 of the License, or (at your option) any later version.
8  */
9 #ifndef __ASM_MACH_TX49XX_IOREMAP_H
10 #define __ASM_MACH_TX49XX_IOREMAP_H
11 
12 #include <linux/types.h>
13 
14 /*
15  * Allow physical addresses to be fixed up to help peripherals located
16  * outside the low 32-bit range -- generic pass-through version.
17  */
18 static inline phys_t fixup_bigphys_addr(phys_t phys_addr, phys_t size)
19 {
20 	return phys_addr;
21 }
22 
23 static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size,
24 	unsigned long flags)
25 {
26 #ifdef CONFIG_64BIT
27 #define TXX9_DIRECTMAP_BASE	0xfff000000ul
28 #else
29 #define TXX9_DIRECTMAP_BASE	0xff000000ul
30 #endif
31 	if (offset >= TXX9_DIRECTMAP_BASE &&
32 	    offset < TXX9_DIRECTMAP_BASE + 0x400000)
33 		return (void __iomem *)(unsigned long)(int)offset;
34 	return NULL;
35 }
36 
37 static inline int plat_iounmap(const volatile void __iomem *addr)
38 {
39 	return (unsigned long)addr >=
40 		(unsigned long)(int)(TXX9_DIRECTMAP_BASE & 0xffffffff);
41 }
42 
43 #endif /* __ASM_MACH_TX49XX_IOREMAP_H */
44