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authorStuart Menefy <stuart.menefy@st.com>2007-11-30 09:06:36 +0100
committerPaul Mundt <lethal@linux-sh.org>2008-01-28 05:18:59 +0100
commitcbaa118ecfd99fc5ed7adbd9c34a30e1c05e3c93 (patch)
treee60db5c0f3573558c97f39cfab78732220a72e6d /arch/sh/mm/cache-debugfs.c
parentsh: Explicit alignment for PAGE_SIZE in copy/clear_page(). (diff)
downloadlinux-cbaa118ecfd99fc5ed7adbd9c34a30e1c05e3c93.tar.xz
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.c9
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;
}