| Mikael Starvik | 51533b6 | 2005-07-27 11:44:44 -0700 | [diff] [blame] | 1 | #ifndef _ASM_CRIS_ARCH_PAGE_H |
| 2 | #define _ASM_CRIS_ARCH_PAGE_H |
| 3 | |
| Mikael Starvik | 51533b6 | 2005-07-27 11:44:44 -0700 | [diff] [blame] | 4 | |
| 5 | #ifdef __KERNEL__ |
| 6 | |
| 7 | #define PAGE_OFFSET KSEG_C /* kseg_c is mapped to physical ram. */ |
| 8 | |
| 9 | /* |
| Jesper Nilsson | e919a12 | 2008-01-28 18:04:46 +0100 | [diff] [blame^] | 10 | * Macros to convert between physical and virtual addresses. By stripping a |
| Mikael Starvik | 51533b6 | 2005-07-27 11:44:44 -0700 | [diff] [blame] | 11 | * selected bit it's possible to convert between KSEG_x and 0x40000000 where the |
| 12 | * DRAM really resides. DRAM is virtually at 0xc. |
| 13 | */ |
| Jesper Nilsson | e919a12 | 2008-01-28 18:04:46 +0100 | [diff] [blame^] | 14 | #ifndef CONFIG_ETRAX_VCS_SIM |
| Mikael Starvik | 51533b6 | 2005-07-27 11:44:44 -0700 | [diff] [blame] | 15 | #define __pa(x) ((unsigned long)(x) & 0x7fffffff) |
| 16 | #define __va(x) ((void *)((unsigned long)(x) | 0x80000000)) |
| 17 | #else |
| 18 | #define __pa(x) ((unsigned long)(x) & 0x3fffffff) |
| 19 | #define __va(x) ((void *)((unsigned long)(x) | 0xc0000000)) |
| 20 | #endif |
| 21 | |
| 22 | #define VM_STACK_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ |
| 23 | VM_MAYREAD | VM_MAYWRITE) |
| 24 | |
| 25 | #endif /* __KERNEL__ */ |
| 26 | |
| 27 | #endif /* _ASM_CRIS_ARCH_PAGE_H */ |