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>

1 files changed, 6 insertions, 6 deletions

diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c
index 4896d7376926..22dacc778823 100644
--- a/arch/sh/mm/cache-sh7705.c
+++ b/arch/sh/mm/cache-sh7705.c
@@ -71,7 +71,7 @@ void flush_icache_range(unsigned long start, unsigned long end)
 /*
  * Writeback&Invalidate the D-cache of the page
  */
-static void __flush_dcache_page(unsigned long phys)
+static void __uses_jump_to_uncached __flush_dcache_page(unsigned long phys)
 {
         unsigned long ways, waysize, addrstart;
         unsigned long flags;
@@ -92,7 +92,7 @@ static void __flush_dcache_page(unsigned long phys)
          * possible.
          */
         local_irq_save(flags);
-        jump_to_P2();
+        jump_to_uncached();
 
         ways = current_cpu_data.dcache.ways;
         waysize = current_cpu_data.dcache.sets;
@@ -118,7 +118,7 @@ static void __flush_dcache_page(unsigned long phys)
                 addrstart += current_cpu_data.dcache.way_incr;
         } while (--ways);
 
-        back_to_P1();
+        back_to_cached();
         local_irq_restore(flags);
 }
 
@@ -132,15 +132,15 @@ void flush_dcache_page(struct page *page)
                 __flush_dcache_page(PHYSADDR(page_address(page)));
 }
 
-void flush_cache_all(void)
+void __uses_jump_to_uncached flush_cache_all(void)
 {
         unsigned long flags;
 
         local_irq_save(flags);
-        jump_to_P2();
+        jump_to_uncached();
 
         cache_wback_all();
-        back_to_P1();
+        back_to_cached();
         local_irq_restore(flags);
 }