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| author | Ingo Molnar <mingo@elte.hu> | 2011-05-07 10:51:38 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-07 10:51:48 +0200 |
| commit | 4cb1f43ce8c72ee453c00fcb9f6ee9c4ebd03f98 (patch) | |
| tree | 15e64f192b54ea01fd640d69eed0cabed2baaaa9 /arch/m68k/platform/coldfire/cache.c | |
| parent | 9de4966a4d218f29c68e96e8e7b4d2840dedec79 (diff) | |
| parent | 0ee5623f9a6e52df90a78bd21179f8ab370e102e (diff) | |
| download | blackbird-op-linux-4cb1f43ce8c72ee453c00fcb9f6ee9c4ebd03f98.tar.gz blackbird-op-linux-4cb1f43ce8c72ee453c00fcb9f6ee9c4ebd03f98.zip | |
Merge commit 'v2.6.39-rc6' into x86/cleanups
Merge reason: move to a (much) newer upstream base.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/m68k/platform/coldfire/cache.c')
| -rw-r--r-- | arch/m68k/platform/coldfire/cache.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/m68k/platform/coldfire/cache.c b/arch/m68k/platform/coldfire/cache.c new file mode 100644 index 000000000000..71beeaf0c5c4 --- /dev/null +++ b/arch/m68k/platform/coldfire/cache.c @@ -0,0 +1,48 @@ +/***************************************************************************/ + +/* + * cache.c -- general ColdFire Cache maintenance code + * + * Copyright (C) 2010, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ +#ifdef CACHE_PUSH +/***************************************************************************/ + +/* + * Use cpushl to push all dirty cache lines back to memory. + * Older versions of GAS don't seem to know how to generate the + * ColdFire cpushl instruction... Oh well, bit stuff it for now. + */ + +void mcf_cache_push(void) +{ + __asm__ __volatile__ ( + "clrl %%d0\n\t" + "1:\n\t" + "movel %%d0,%%a0\n\t" + "2:\n\t" + ".word 0xf468\n\t" + "addl %0,%%a0\n\t" + "cmpl %1,%%a0\n\t" + "blt 2b\n\t" + "addql #1,%%d0\n\t" + "cmpil %2,%%d0\n\t" + "bne 1b\n\t" + : /* No output */ + : "i" (CACHE_LINE_SIZE), + "i" (DCACHE_SIZE / CACHE_WAYS), + "i" (CACHE_WAYS) + : "d0", "a0" ); +} + +/***************************************************************************/ +#endif /* CACHE_PUSH */ +/***************************************************************************/ |
