1 /* 2 * include/asm-xtensa/cache.h 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. 7 * 8 * (C) 2001 - 2005 Tensilica Inc. 9 */ 10 11 #ifndef _XTENSA_CACHE_H 12 #define _XTENSA_CACHE_H 13 14 #include <asm/core.h> 15 16 #define L1_CACHE_SHIFT XCHAL_DCACHE_LINEWIDTH 17 #define L1_CACHE_BYTES XCHAL_DCACHE_LINESIZE 18 #define SMP_CACHE_BYTES L1_CACHE_BYTES 19 20 #define DCACHE_WAY_SIZE (XCHAL_DCACHE_SIZE/XCHAL_DCACHE_WAYS) 21 #define ICACHE_WAY_SIZE (XCHAL_ICACHE_SIZE/XCHAL_ICACHE_WAYS) 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 31 32 #define ARCH_DMA_MINALIGN L1_CACHE_BYTES 33 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 40 #endif /* _XTENSA_CACHE_H */ 41
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