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-rw-r--r--arch/v850/kernel/v850e2_cache.c127
1 files changed, 0 insertions, 127 deletions
diff --git a/arch/v850/kernel/v850e2_cache.c b/arch/v850/kernel/v850e2_cache.c
deleted file mode 100644
index 4570312c689c..000000000000
--- a/arch/v850/kernel/v850e2_cache.c
+++ /dev/null
@@ -1,127 +0,0 @@
1/*
2 * arch/v850/kernel/v850e2_cache.c -- Cache control for V850E2 cache
3 * memories
4 *
5 * Copyright (C) 2003 NEC Electronics Corporation
6 * Copyright (C) 2003 Miles Bader <miles@gnu.org>
7 *
8 * This file is subject to the terms and conditions of the GNU General
9 * Public License. See the file COPYING in the main directory of this
10 * archive for more details.
11 *
12 * Written by Miles Bader <miles@gnu.org>
13 */
14
15#include <linux/mm.h>
16
17#include <asm/v850e2_cache.h>
18
19/* Cache operations we can do. The encoding corresponds directly to the
20 value we need to write into the COPR register. */
21enum cache_op {
22 OP_SYNC_IF_DIRTY = V850E2_CACHE_COPR_CFC(0), /* 000 */
23 OP_SYNC_IF_VALID = V850E2_CACHE_COPR_CFC(1), /* 001 */
24 OP_SYNC_IF_VALID_AND_CLEAR = V850E2_CACHE_COPR_CFC(3), /* 011 */
25 OP_WAY_CLEAR = V850E2_CACHE_COPR_CFC(4), /* 100 */
26 OP_FILL = V850E2_CACHE_COPR_CFC(5), /* 101 */
27 OP_CLEAR = V850E2_CACHE_COPR_CFC(6), /* 110 */
28 OP_CREATE_DIRTY = V850E2_CACHE_COPR_CFC(7) /* 111 */
29};
30
31/* Which cache to use. This encoding also corresponds directly to the
32 value we need to write into the COPR register. */
33enum cache {
34 ICACHE = 0,
35 DCACHE = V850E2_CACHE_COPR_LBSL
36};
37
38/* Returns ADDR rounded down to the beginning of its cache-line. */
39#define CACHE_LINE_ADDR(addr) \
40 ((addr) & ~(V850E2_CACHE_LINE_SIZE - 1))
41/* Returns END_ADDR rounded up to the `limit' of its cache-line. */
42#define CACHE_LINE_END_ADDR(end_addr) \
43 CACHE_LINE_ADDR(end_addr + (V850E2_CACHE_LINE_SIZE - 1))
44
45
46/* Low-level cache ops. */
47
48/* Apply cache-op OP to all entries in CACHE. */
49static inline void cache_op_all (enum cache_op op, enum cache cache)
50{
51 int cmd = op | cache | V850E2_CACHE_COPR_WSLE | V850E2_CACHE_COPR_STRT;
52
53 if (op != OP_WAY_CLEAR) {
54 /* The WAY_CLEAR operation does the whole way, but other
55 ops take begin-index and count params; we just indicate
56 the entire cache. */
57 V850E2_CACHE_CADL = 0;
58 V850E2_CACHE_CADH = 0;
59 V850E2_CACHE_CCNT = V850E2_CACHE_WAY_SIZE - 1;
60 }
61
62 V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(0); /* way 0 */
63 V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(1); /* way 1 */
64 V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(2); /* way 2 */
65 V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(3); /* way 3 */
66}
67
68/* Apply cache-op OP to all entries in CACHE covering addresses ADDR
69 through ADDR+LEN. */
70static inline void cache_op_range (enum cache_op op, u32 addr, u32 len,
71 enum cache cache)
72{
73 u32 start = CACHE_LINE_ADDR (addr);
74 u32 end = CACHE_LINE_END_ADDR (addr + len);
75 u32 num_lines = (end - start) >> V850E2_CACHE_LINE_SIZE_BITS;
76
77 V850E2_CACHE_CADL = start & 0xFFFF;
78 V850E2_CACHE_CADH = start >> 16;
79 V850E2_CACHE_CCNT = num_lines - 1;
80
81 V850E2_CACHE_COPR = op | cache | V850E2_CACHE_COPR_STRT;
82}
83
84
85/* High-level ops. */
86
87static void cache_exec_after_store_all (void)
88{
89 cache_op_all (OP_SYNC_IF_DIRTY, DCACHE);
90 cache_op_all (OP_WAY_CLEAR, ICACHE);
91}
92
93static void cache_exec_after_store_range (u32 start, u32 len)
94{
95 cache_op_range (OP_SYNC_IF_DIRTY, start, len, DCACHE);
96 cache_op_range (OP_CLEAR, start, len, ICACHE);
97}
98
99
100/* Exported functions. */
101
102void flush_icache (void)
103{
104 cache_exec_after_store_all ();
105}
106
107void flush_icache_range (unsigned long start, unsigned long end)
108{
109 cache_exec_after_store_range (start, end - start);
110}
111
112void flush_icache_page (struct vm_area_struct *vma, struct page *page)
113{
114 cache_exec_after_store_range (page_to_virt (page), PAGE_SIZE);
115}
116
117void flush_icache_user_range (struct vm_area_struct *vma, struct page *page,
118 unsigned long addr, int len)
119{
120 cache_exec_after_store_range (addr, len);
121}
122
123void flush_cache_sigtramp (unsigned long addr)
124{
125 /* For the exact size, see signal.c, but 16 bytes should be enough. */
126 cache_exec_after_store_range (addr, 16);
127}