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