Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $ |
| 2 | * |
| 3 | * include/asm-sh/cache.h |
| 4 | * |
| 5 | * Copyright 1999 (C) Niibe Yutaka |
| 6 | * Copyright 2002, 2003 (C) Paul Mundt |
| 7 | */ |
| 8 | #ifndef __ASM_SH_CACHE_H |
| 9 | #define __ASM_SH_CACHE_H |
| 10 | #ifdef __KERNEL__ |
| 11 | |
Paul Mundt | 357d594 | 2007-06-11 15:32:07 +0900 | [diff] [blame] | 12 | #include <linux/init.h> |
Paul Mundt | f15cbe6 | 2008-07-29 08:09:44 +0900 | [diff] [blame] | 13 | #include <cpu/cache.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | |
Denys Vlasenko | 54cb27a | 2010-02-20 01:03:44 +0100 | [diff] [blame] | 17 | #define __read_mostly __attribute__((__section__(".data..read_mostly"))) |
Paul Mundt | 121fc47 | 2007-10-30 17:39:07 +0900 | [diff] [blame] | 18 | |
Paul Mundt | 87e29ca | 2007-03-01 15:56:31 +0900 | [diff] [blame] | 19 | #ifndef __ASSEMBLY__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | struct cache_info { |
Richard Curnow | b638d0b | 2006-09-27 14:09:26 +0900 | [diff] [blame] | 21 | unsigned int ways; /* Number of cache ways */ |
| 22 | unsigned int sets; /* Number of cache sets */ |
| 23 | unsigned int linesz; /* Cache line size (bytes) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
Richard Curnow | b638d0b | 2006-09-27 14:09:26 +0900 | [diff] [blame] | 25 | unsigned int way_size; /* sets * line size */ |
| 26 | |
| 27 | /* |
| 28 | * way_incr is the address offset for accessing the next way |
| 29 | * in memory mapped cache array ops. |
| 30 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | unsigned int way_incr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | unsigned int entry_shift; |
| 33 | unsigned int entry_mask; |
| 34 | |
Richard Curnow | b638d0b | 2006-09-27 14:09:26 +0900 | [diff] [blame] | 35 | /* |
| 36 | * Compute a mask which selects the address bits which overlap between |
| 37 | * 1. those used to select the cache set during indexing |
| 38 | * 2. those in the physical page number. |
| 39 | */ |
| 40 | unsigned int alias_mask; |
Richard Curnow | b638d0b | 2006-09-27 14:09:26 +0900 | [diff] [blame] | 41 | unsigned int n_aliases; /* Number of aliases */ |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | unsigned long flags; |
| 44 | }; |
Paul Mundt | 87e29ca | 2007-03-01 15:56:31 +0900 | [diff] [blame] | 45 | #endif /* __ASSEMBLY__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #endif /* __KERNEL__ */ |
| 47 | #endif /* __ASM_SH_CACHE_H */ |