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| author | Stuart Menefy <stuart.menefy@st.com> | 2007-11-30 17:06:36 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:18:59 +0900 |
| commit | cbaa118ecfd99fc5ed7adbd9c34a30e1c05e3c93 (patch) | |
| tree | e60db5c0f3573558c97f39cfab78732220a72e6d /arch/sh/mm/cache-debugfs.c | |
| parent | 325df7f20467da07901c4f2b006d3457bba0adec (diff) | |
| download | blackbird-op-linux-cbaa118ecfd99fc5ed7adbd9c34a30e1c05e3c93.tar.gz blackbird-op-linux-cbaa118ecfd99fc5ed7adbd9c34a30e1c05e3c93.zip | |
sh: Preparation for uncached jumps through PMB.
Presently most of the 29-bit physical parts do P1/P2 segmentation
with a 1:1 cached/uncached mapping, jumping between the two to
control the caching behaviour. This provides the basic infrastructure
to maintain this behaviour on 32-bit physical parts that don't map
P1/P2 at all, using a shiny new linker section and corresponding
fixmap entry.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/cache-debugfs.c')
| -rw-r--r-- | arch/sh/mm/cache-debugfs.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c index de6d2c9aa477..db6d950b6f5e 100644 --- a/arch/sh/mm/cache-debugfs.c +++ b/arch/sh/mm/cache-debugfs.c @@ -22,7 +22,8 @@ enum cache_type { CACHE_TYPE_UNIFIED, }; -static int cache_seq_show(struct seq_file *file, void *iter) +static int __uses_jump_to_uncached cache_seq_show(struct seq_file *file, + void *iter) { unsigned int cache_type = (unsigned int)file->private; struct cache_info *cache; @@ -34,11 +35,11 @@ static int cache_seq_show(struct seq_file *file, void *iter) * Go uncached immediately so we don't skew the results any * more than we already are.. */ - jump_to_P2(); + jump_to_uncached(); ccr = ctrl_inl(CCR); if ((ccr & CCR_CACHE_ENABLE) == 0) { - back_to_P1(); + back_to_cached(); seq_printf(file, "disabled\n"); return 0; @@ -104,7 +105,7 @@ static int cache_seq_show(struct seq_file *file, void *iter) addrstart += cache->way_incr; } - back_to_P1(); + back_to_cached(); return 0; } |
