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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-03-28 16:29:51 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-03-28 16:29:51 -0400 |
commit | ed40d0c472b136682b2fcba05f89762859c7374f (patch) | |
tree | 076b83a26bcd63d6158463735dd34c10bbc591dc /arch/sh/mm/pmb-fixed.c | |
parent | 9e495834e59ca9b29f1a1f63b9f5533bb022ac49 (diff) | |
parent | 5d80f8e5a9dc9c9a94d4aeaa567e219a808b8a4a (diff) |
Merge branch 'origin' into devel
Conflicts:
sound/soc/pxa/pxa2xx-i2s.c
Diffstat (limited to 'arch/sh/mm/pmb-fixed.c')
-rw-r--r-- | arch/sh/mm/pmb-fixed.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sh/mm/pmb-fixed.c b/arch/sh/mm/pmb-fixed.c new file mode 100644 index 000000000000..43c8eac4d8a1 --- /dev/null +++ b/arch/sh/mm/pmb-fixed.c | |||
@@ -0,0 +1,45 @@ | |||
1 | /* | ||
2 | * arch/sh/mm/fixed_pmb.c | ||
3 | * | ||
4 | * Copyright (C) 2009 Renesas Solutions Corp. | ||
5 | * | ||
6 | * This file is subject to the terms and conditions of the GNU General Public | ||
7 | * License. See the file "COPYING" in the main directory of this archive | ||
8 | * for more details. | ||
9 | */ | ||
10 | #include <linux/init.h> | ||
11 | #include <linux/mm.h> | ||
12 | #include <linux/io.h> | ||
13 | #include <asm/mmu.h> | ||
14 | #include <asm/mmu_context.h> | ||
15 | |||
16 | static int __uses_jump_to_uncached fixed_pmb_init(void) | ||
17 | { | ||
18 | int i; | ||
19 | unsigned long addr, data; | ||
20 | |||
21 | jump_to_uncached(); | ||
22 | |||
23 | for (i = 0; i < PMB_ENTRY_MAX; i++) { | ||
24 | addr = PMB_DATA + (i << PMB_E_SHIFT); | ||
25 | data = ctrl_inl(addr); | ||
26 | if (!(data & PMB_V)) | ||
27 | continue; | ||
28 | |||
29 | if (data & PMB_C) { | ||
30 | #if defined(CONFIG_CACHE_WRITETHROUGH) | ||
31 | data |= PMB_WT; | ||
32 | #elif defined(CONFIG_CACHE_WRITEBACK) | ||
33 | data &= ~PMB_WT; | ||
34 | #else | ||
35 | data &= ~(PMB_C | PMB_WT); | ||
36 | #endif | ||
37 | } | ||
38 | ctrl_outl(data, addr); | ||
39 | } | ||
40 | |||
41 | back_to_cached(); | ||
42 | |||
43 | return 0; | ||
44 | } | ||
45 | arch_initcall(fixed_pmb_init); | ||