2 #include <asm/mmu_context.h>
3 #include <asm/cacheflush.h>
7 * Write back the dirty D-caches, but not invalidate them.
9 * START: Virtual Address (U0, P1, or P3)
10 * SIZE: Size of the region.
12 static void sh4__flush_wback_region(void *start, int size)
14 reg_size_t aligned_start, v, cnt, end;
16 aligned_start = register_align(start);
17 v = aligned_start & ~(L1_CACHE_BYTES-1);
18 end = (aligned_start + size + L1_CACHE_BYTES-1)
19 & ~(L1_CACHE_BYTES-1);
20 cnt = (end - v) / L1_CACHE_BYTES;
23 __ocbwb(v); 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;
35 __ocbwb(v); v += L1_CACHE_BYTES;
41 * Write back the dirty D-caches and invalidate them.
43 * START: Virtual Address (U0, P1, or P3)
44 * SIZE: Size of the region.
46 static void sh4__flush_purge_region(void *start, int size)
48 reg_size_t aligned_start, v, cnt, end;
50 aligned_start = register_align(start);
51 v = aligned_start & ~(L1_CACHE_BYTES-1);
52 end = (aligned_start + size + L1_CACHE_BYTES-1)
53 & ~(L1_CACHE_BYTES-1);
54 cnt = (end - v) / L1_CACHE_BYTES;
57 __ocbp(v); 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;
68 __ocbp(v); v += L1_CACHE_BYTES;
74 * No write back please
76 static void sh4__flush_invalidate_region(void *start, int size)
78 reg_size_t aligned_start, v, cnt, end;
80 aligned_start = register_align(start);
81 v = aligned_start & ~(L1_CACHE_BYTES-1);
82 end = (aligned_start + size + L1_CACHE_BYTES-1)
83 & ~(L1_CACHE_BYTES-1);
84 cnt = (end - v) / L1_CACHE_BYTES;
87 __ocbi(v); 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;
99 __ocbi(v); v += L1_CACHE_BYTES;
104 void __init sh4__flush_region_init(void)
106 __flush_wback_region = sh4__flush_wback_region;
107 __flush_invalidate_region = sh4__flush_invalidate_region;
108 __flush_purge_region = sh4__flush_purge_region;