2 #include <asm/mmu_context.h>
3 #include <asm/cache_insns.h>
4 #include <asm/cacheflush.h>
8 * Write back the dirty D-caches, but not invalidate them.
10 * START: Virtual Address (U0, P1, or P3)
11 * SIZE: Size of the region.
13 static void sh4__flush_wback_region(void *start, int size)
15 reg_size_t aligned_start, v, cnt, end;
17 aligned_start = register_align(start);
18 v = aligned_start & ~(L1_CACHE_BYTES-1);
19 end = (aligned_start + size + L1_CACHE_BYTES-1)
20 & ~(L1_CACHE_BYTES-1);
21 cnt = (end - v) / L1_CACHE_BYTES;
24 __ocbwb(v); v += L1_CACHE_BYTES;
25 __ocbwb(v); v += L1_CACHE_BYTES;
26 __ocbwb(v); v += L1_CACHE_BYTES;
27 __ocbwb(v); v += L1_CACHE_BYTES;
28 __ocbwb(v); v += L1_CACHE_BYTES;
29 __ocbwb(v); v += L1_CACHE_BYTES;
30 __ocbwb(v); v += L1_CACHE_BYTES;
31 __ocbwb(v); v += L1_CACHE_BYTES;
36 __ocbwb(v); v += L1_CACHE_BYTES;
42 * Write back the dirty D-caches and invalidate them.
44 * START: Virtual Address (U0, P1, or P3)
45 * SIZE: Size of the region.
47 static void sh4__flush_purge_region(void *start, int size)
49 reg_size_t aligned_start, v, cnt, end;
51 aligned_start = register_align(start);
52 v = aligned_start & ~(L1_CACHE_BYTES-1);
53 end = (aligned_start + size + L1_CACHE_BYTES-1)
54 & ~(L1_CACHE_BYTES-1);
55 cnt = (end - v) / L1_CACHE_BYTES;
58 __ocbp(v); v += L1_CACHE_BYTES;
59 __ocbp(v); v += L1_CACHE_BYTES;
60 __ocbp(v); v += L1_CACHE_BYTES;
61 __ocbp(v); v += L1_CACHE_BYTES;
62 __ocbp(v); v += L1_CACHE_BYTES;
63 __ocbp(v); v += L1_CACHE_BYTES;
64 __ocbp(v); v += L1_CACHE_BYTES;
65 __ocbp(v); v += L1_CACHE_BYTES;
69 __ocbp(v); v += L1_CACHE_BYTES;
75 * No write back please
77 static void sh4__flush_invalidate_region(void *start, int size)
79 reg_size_t aligned_start, v, cnt, end;
81 aligned_start = register_align(start);
82 v = aligned_start & ~(L1_CACHE_BYTES-1);
83 end = (aligned_start + size + L1_CACHE_BYTES-1)
84 & ~(L1_CACHE_BYTES-1);
85 cnt = (end - v) / L1_CACHE_BYTES;
88 __ocbi(v); v += L1_CACHE_BYTES;
89 __ocbi(v); v += L1_CACHE_BYTES;
90 __ocbi(v); v += L1_CACHE_BYTES;
91 __ocbi(v); v += L1_CACHE_BYTES;
92 __ocbi(v); v += L1_CACHE_BYTES;
93 __ocbi(v); v += L1_CACHE_BYTES;
94 __ocbi(v); v += L1_CACHE_BYTES;
95 __ocbi(v); v += L1_CACHE_BYTES;
100 __ocbi(v); v += L1_CACHE_BYTES;
105 void __init sh4__flush_region_init(void)
107 __flush_wback_region = sh4__flush_wback_region;
108 __flush_invalidate_region = sh4__flush_invalidate_region;
109 __flush_purge_region = sh4__flush_purge_region;