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sh: Convert SH-2A to new cacheflush interface. 

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-08-15 12:38:29 +09:00
parent 109b44a82a
commit a58e1a2ab4
3 changed files with 19 additions and 34 deletions
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30
arch/sh/include/cpu-sh2a/cpu/cacheflush.h
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@ -1,30 +0,0 @@
#ifndef __ASM_CPU_SH2A_CACHEFLUSH_H
#define __ASM_CPU_SH2A_CACHEFLUSH_H
/*
* Cache flushing:
*
* - flush_cache_all() flushes entire cache
* - flush_cache_mm(mm) flushes the specified mm context's cache lines
* - flush_cache_dup mm(mm) handles cache flushing when forking
* - flush_cache_page(mm, vmaddr, pfn) flushes a single page
* - flush_cache_range(vma, start, end) flushes a range of pages
*
* - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
* - flush_icache_range(start, end) flushes(invalidates) a range for icache
* - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
*
* Caches are indexed (effectively) by physical address on SH-2, so
* we don't need them.
*/
#define flush_cache_all() do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_dup_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
#define flush_dcache_page(page) do { } while (0)
void flush_icache_range(unsigned long start, unsigned long end);
#define flush_icache_page(vma,pg) do { } while (0)
#define flush_cache_sigtramp(vaddr) do { } while (0)
#endif /* __ASM_CPU_SH2A_CACHEFLUSH_H */

17
arch/sh/mm/cache-sh2a.c
View File

@ -15,7 +15,7 @@
#include <asm/cacheflush.h>
#include <asm/io.h>
void __flush_wback_region(void *start, int size)
static void sh2a__flush_wback_region(void *start, int size)
{
unsigned long v;
unsigned long begin, end;
@ -44,7 +44,7 @@ void __flush_wback_region(void *start, int size)
local_irq_restore(flags);
}
void __flush_purge_region(void *start, int size)
static void sh2a__flush_purge_region(void *start, int size)
{
unsigned long v;
unsigned long begin, end;
@ -65,7 +65,7 @@ void __flush_purge_region(void *start, int size)
local_irq_restore(flags);
}
void __flush_invalidate_region(void *start, int size)
static void sh2a__flush_invalidate_region(void *start, int size)
{
unsigned long v;
unsigned long begin, end;
@ -97,7 +97,7 @@ void __flush_invalidate_region(void *start, int size)
}
/* WBack O-Cache and flush I-Cache */
void flush_icache_range(unsigned long start, unsigned long end)
static void sh2a_flush_icache_range(unsigned long start, unsigned long end)
{
unsigned long v;
unsigned long flags;
@ -127,3 +127,12 @@ void flush_icache_range(unsigned long start, unsigned long end)
back_to_cached();
local_irq_restore(flags);
}
void __init sh2a_cache_init(void)
{
flush_icache_range = sh2a_flush_icache_range;
__flush_wback_region = sh2a__flush_wback_region;
__flush_purge_region = sh2a__flush_purge_region;
__flush_invalidate_region = sh2a__flush_invalidate_region;
}

6
arch/sh/mm/cache.c
View File

@ -250,6 +250,12 @@ void __init cpu_cache_init(void)
sh2_cache_init();
}
if (boot_cpu_data.family == CPU_FAMILY_SH2A) {
extern void __weak sh2a_cache_init(void);
sh2a_cache_init();
}
if ((boot_cpu_data.family == CPU_FAMILY_SH4) ||
(boot_cpu_data.family == CPU_FAMILY_SH4A) ||
(boot_cpu_data.family == CPU_FAMILY_SH4AL_DSP)) {