| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 1 | /* |
| Uwe Zeisberger | f30c226 | 2006-10-03 23:01:26 +0200 | [diff] [blame] | 2 | * include/asm-xtensa/cache.h |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 7 | * |
| 8 | * (C) 2001 - 2005 Tensilica Inc. |
| 9 | */ |
| 10 | |
| 11 | #ifndef _XTENSA_CACHE_H |
| 12 | #define _XTENSA_CACHE_H |
| 13 | |
| Max Filippov | 8f8d574 | 2019-01-01 19:41:55 -0800 | [diff] [blame] | 14 | #include <asm/core.h> |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 15 | |
| Chris Zankel | 173d668 | 2006-12-10 02:18:48 -0800 | [diff] [blame] | 16 | #define L1_CACHE_SHIFT XCHAL_DCACHE_LINEWIDTH |
| 17 | #define L1_CACHE_BYTES XCHAL_DCACHE_LINESIZE |
| 18 | #define SMP_CACHE_BYTES L1_CACHE_BYTES |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 19 | |
| Chris Zankel | 173d668 | 2006-12-10 02:18:48 -0800 | [diff] [blame] | 20 | #define DCACHE_WAY_SIZE (XCHAL_DCACHE_SIZE/XCHAL_DCACHE_WAYS) |
| 21 | #define ICACHE_WAY_SIZE (XCHAL_ICACHE_SIZE/XCHAL_ICACHE_WAYS) |
| Chris Zankel | 6656920 | 2007-08-22 10:14:51 -0700 | [diff] [blame] | 22 | #define DCACHE_WAY_SHIFT (XCHAL_DCACHE_SETWIDTH + XCHAL_DCACHE_LINEWIDTH) |
| 23 | #define ICACHE_WAY_SHIFT (XCHAL_ICACHE_SETWIDTH + XCHAL_ICACHE_LINEWIDTH) |
| 24 | |
| 25 | /* Maximum cache size per way. */ |
| 26 | #if DCACHE_WAY_SIZE >= ICACHE_WAY_SIZE |
| 27 | # define CACHE_WAY_SIZE DCACHE_WAY_SIZE |
| 28 | #else |
| 29 | # define CACHE_WAY_SIZE ICACHE_WAY_SIZE |
| 30 | #endif |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 31 | |
| FUJITA Tomonori | a6eb9fe | 2010-08-10 18:03:22 -0700 | [diff] [blame] | 32 | #define ARCH_DMA_MINALIGN L1_CACHE_BYTES |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 33 | |
| Max Filippov | 7af710d | 2017-01-03 17:57:51 -0800 | [diff] [blame^] | 34 | /* |
| 35 | * R/O after init is actually writable, it cannot go to .rodata |
| 36 | * according to vmlinux linker script. |
| 37 | */ |
| 38 | #define __ro_after_init __read_mostly |
| 39 | |
| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 40 | #endif /* _XTENSA_CACHE_H */ |