1 #ifndef __ASM_SH_CACHE_H
2 #define __ASM_SH_CACHE_H
4 #if defined(CONFIG_SH4) || defined(CONFIG_SH4A)
6 int cache_control(unsigned int cmd);
8 #define L1_CACHE_BYTES 32
10 struct __large_struct { unsigned long buf[100]; };
11 #define __m(x) (*(struct __large_struct *)(x))
13 void dcache_wback_range(u32 start, u32 end)
17 start &= ~(L1_CACHE_BYTES - 1);
18 for (v = start; v < end; v += L1_CACHE_BYTES) {
19 asm volatile ("ocbwb %0" : /* no output */
24 void dcache_invalid_range(u32 start, u32 end)
28 start &= ~(L1_CACHE_BYTES - 1);
29 for (v = start; v < end; v += L1_CACHE_BYTES) {
30 asm volatile ("ocbi %0" : /* no output */
37 * 32-bytes is the largest L1 data cache line size for SH the architecture. So
38 * it is a safe default for DMA alignment.
40 #define ARCH_DMA_MINALIGN 32
42 #endif /* CONFIG_SH4 || CONFIG_SH4A */
45 * Use the L1 data cache line size value for the minimum DMA buffer alignment
48 #ifndef ARCH_DMA_MINALIGN
49 #define ARCH_DMA_MINALIGN L1_CACHE_BYTES
52 #endif /* __ASM_SH_CACHE_H */