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

Signed-off-by: Paul Mundt <[e-mail]>

arch/sh/include/cpu-sh2a/cpu/cacheflush.h

···
-#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 */

arch/sh/mm/cache-sh2a.c

···
 #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;
···
 	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;
···
 	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;
···
 }
 
 /* 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;
···
 
 	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;
 }

arch/sh/mm/cache.c

···
 		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)) {