From cbaa118ecfd99fc5ed7adbd9c34a30e1c05e3c93 Mon Sep 17 00:00:00 2001 From: Stuart Menefy Date: Fri, 30 Nov 2007 17:06:36 +0900 Subject: 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 Signed-off-by: Paul Mundt --- arch/sh/mm/cache-sh4.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (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 226b190c5b9c..43d7ff6b6ec7 100644 --- a/arch/sh/mm/cache-sh4.c +++ b/arch/sh/mm/cache-sh4.c @@ -190,7 +190,7 @@ void flush_icache_range(unsigned long start, unsigned long end) * .. which happens to be the same behavior as flush_icache_range(). * So, we simply flush out a line. */ -void flush_cache_sigtramp(unsigned long addr) +void __uses_jump_to_uncached flush_cache_sigtramp(unsigned long addr) { unsigned long v, index; unsigned long flags; @@ -205,13 +205,13 @@ void flush_cache_sigtramp(unsigned long addr) (v & boot_cpu_data.icache.entry_mask); local_irq_save(flags); - jump_to_P2(); + jump_to_uncached(); for (i = 0; i < boot_cpu_data.icache.ways; i++, index += boot_cpu_data.icache.way_incr) ctrl_outl(0, index); /* Clear out Valid-bit */ - back_to_P1(); + back_to_cached(); wmb(); local_irq_restore(flags); } @@ -256,12 +256,12 @@ void flush_dcache_page(struct page *page) } /* TODO: Selective icache invalidation through IC address array.. */ -static inline void flush_icache_all(void) +static inline void __uses_jump_to_uncached flush_icache_all(void) { unsigned long flags, ccr; local_irq_save(flags); - jump_to_P2(); + jump_to_uncached(); /* Flush I-cache */ ccr = ctrl_inl(CCR); @@ -269,11 +269,11 @@ static inline void flush_icache_all(void) ctrl_outl(ccr, CCR); /* - * back_to_P1() will take care of the barrier for us, don't add + * back_to_cached() will take care of the barrier for us, don't add * another one! */ - back_to_P1(); + back_to_cached(); local_irq_restore(flags); } -- cgit v1.2.3-59-g8ed1b