From fdfc74f9fcebdda14609159d5010b758a9409acf Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 27 Sep 2006 14:05:52 +0900 Subject: 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 --- arch/sh/mm/cache-sh4.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/sh/mm/cache-sh4.c') diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c index 94c05d09c3f7e0..846b63d6f5e8b3 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) i++, index += cpu_data->icache.way_incr) ctrl_outl(0, index); /* Clear out Valid-bit */ back_to_P1(); + wmb(); local_irq_restore(flags); } @@ -223,6 +224,8 @@ void flush_dcache_page(struct page *page) flush_cache_4096(CACHE_OC_ADDRESS_ARRAY | 0x2000, phys); flush_cache_4096(CACHE_OC_ADDRESS_ARRAY | 0x3000, phys); } + + wmb(); } static inline void flush_icache_all(void) @@ -247,6 +250,7 @@ void flush_dcache_all(void) __flush_dcache_all(); else __flush_dcache_all_ex(); + wmb(); } void flush_cache_all(void) @@ -377,5 +381,6 @@ void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len) { flush_cache_page(vma, addr, page_to_pfn(page)); + mb(); } -- cgit 1.2.3-korg