projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8882a4da DG |
1 | #ifndef _ASM_POWERPC_ABS_ADDR_H |
| 2 | #define _ASM_POWERPC_ABS_ADDR_H | |
| 88ced031 | 3 | #ifdef __KERNEL__ |
| 1da177e4 | 4 | |
| 1da177e4 LT |
5 | |
| 6 | /* | |
| 7 | * c 2001 PPC 64 Team, IBM Corp | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or | |
| 10 | * modify it under the terms of the GNU General Public License | |
| 11 | * as published by the Free Software Foundation; either version | |
| 12 | * 2 of the License, or (at your option) any later version. | |
| 13 | */ | |
| 14 | ||
| 95f72d1e | 15 | #include <linux/memblock.h> |
| d9b2b2a2 | 16 | |
| 1da177e4 LT |
17 | #include <asm/types.h> |
| 18 | #include <asm/page.h> | |
| 19 | #include <asm/prom.h> | |
| 56e97b71 ME |
20 | |
| 21 | struct mschunks_map { | |
| 1da177e4 LT |
22 | unsigned long num_chunks; |
| 23 | unsigned long chunk_size; | |
| 24 | unsigned long chunk_shift; | |
| 25 | unsigned long chunk_mask; | |
| 56e97b71 | 26 | u32 *mapping; |
| 1da177e4 LT |
27 | }; |
| 28 | ||
| 56e97b71 | 29 | extern struct mschunks_map mschunks_map; |
| 1da177e4 | 30 | |
| 34c8f696 ME |
31 | /* Chunks are 256 KB */ |
| 32 | #define MSCHUNKS_CHUNK_SHIFT (18) | |
| 33 | #define MSCHUNKS_CHUNK_SIZE (1UL << MSCHUNKS_CHUNK_SHIFT) | |
| 34 | #define MSCHUNKS_OFFSET_MASK (MSCHUNKS_CHUNK_SIZE - 1) | |
| 35 | ||
| 38e85dc1 | 36 | static inline unsigned long chunk_to_addr(unsigned long chunk) |
| 1da177e4 | 37 | { |
| 34c8f696 | 38 | return chunk << MSCHUNKS_CHUNK_SHIFT; |
| 1da177e4 LT |
39 | } |
| 40 | ||
| 38e85dc1 | 41 | static inline unsigned long addr_to_chunk(unsigned long addr) |
| 1da177e4 | 42 | { |
| 34c8f696 | 43 | return addr >> MSCHUNKS_CHUNK_SHIFT; |
| 1da177e4 LT |
44 | } |
| 45 | ||
| ce217952 | 46 | static inline unsigned long phys_to_abs(unsigned long pa) |
| 1da177e4 | 47 | { |
| f5339277 | 48 | return pa; |
| ce217952 | 49 | } |
| 1da177e4 | 50 | |
| 1da177e4 LT |
51 | /* Convenience macros */ |
| 52 | #define virt_to_abs(va) phys_to_abs(__pa(va)) | |
| e88bcd1b | 53 | #define abs_to_virt(aa) __va(aa) |
| 1da177e4 | 54 | |
| 88ced031 | 55 | #endif /* __KERNEL__ */ |
| 8882a4da | 56 | #endif /* _ASM_POWERPC_ABS_ADDR_H */ |