aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sh/mm/cache-sh4.c
diff options
context:
space:
mode:
authorPaul Mundt <lethal@linux-sh.org>2006-09-27 01:05:52 -0400
committerPaul Mundt <lethal@linux-sh.org>2006-09-27 01:05:52 -0400
commitfdfc74f9fcebdda14609159d5010b758a9409acf (patch)
tree191532cb703383768cc198a41503e412578921bb /arch/sh/mm/cache-sh4.c
parent36efc35447154317f9ffc5163a1793b5f7ff3de1 (diff)
sh: Support for SH-4A memory barriers.
SH-4A supports 'synco' as a barrier, sprinkle it around the cache ops as necessary.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/cache-sh4.c')
-rw-r--r--arch/sh/mm/cache-sh4.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index 94c05d09c3f7..846b63d6f5e8 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -184,6 +184,7 @@ void flush_cache_sigtramp(unsigned long addr)
184 i++, index += cpu_data->icache.way_incr) 184 i++, index += cpu_data->icache.way_incr)
185 ctrl_outl(0, index); /* Clear out Valid-bit */ 185 ctrl_outl(0, index); /* Clear out Valid-bit */
186 back_to_P1(); 186 back_to_P1();
187 wmb();
187 local_irq_restore(flags); 188 local_irq_restore(flags);
188} 189}
189 190
@@ -223,6 +224,8 @@ void flush_dcache_page(struct page *page)
223 flush_cache_4096(CACHE_OC_ADDRESS_ARRAY | 0x2000, phys); 224 flush_cache_4096(CACHE_OC_ADDRESS_ARRAY | 0x2000, phys);
224 flush_cache_4096(CACHE_OC_ADDRESS_ARRAY | 0x3000, phys); 225 flush_cache_4096(CACHE_OC_ADDRESS_ARRAY | 0x3000, phys);
225 } 226 }
227
228 wmb();
226} 229}
227 230
228static inline void flush_icache_all(void) 231static inline void flush_icache_all(void)
@@ -247,6 +250,7 @@ void flush_dcache_all(void)
247 __flush_dcache_all(); 250 __flush_dcache_all();
248 else 251 else
249 __flush_dcache_all_ex(); 252 __flush_dcache_all_ex();
253 wmb();
250} 254}
251 255
252void flush_cache_all(void) 256void flush_cache_all(void)
@@ -377,5 +381,6 @@ void flush_icache_user_range(struct vm_area_struct *vma,
377 struct page *page, unsigned long addr, int len) 381 struct page *page, unsigned long addr, int len)
378{ 382{
379 flush_cache_page(vma, addr, page_to_pfn(page)); 383 flush_cache_page(vma, addr, page_to_pfn(page));
384 mb();
380} 385}
381 386