/* Somebody depends on this; sigh... */
#include <linux/mm.h>
+/* Look at Documentation/cachetlb.txt */
+
/*
* Cache handling functions.
* Microblaze has a write-through data cache, meaning that the data cache
* instruction cache to make sure we don't fetch old, bad code.
*/
+/* struct cache, d=dcache, i=icache, fl = flush, iv = invalidate,
+ * suffix r = range */
+struct scache {
+ /* icache */
+ void (*ie)(void); /* enable */
+ void (*id)(void); /* disable */
+ void (*ifl)(void); /* flush */
+ void (*iflr)(unsigned long a, unsigned long b);
+ void (*iin)(void); /* invalidate */
+ void (*iinr)(unsigned long a, unsigned long b);
+ /* dcache */
+ void (*de)(void); /* enable */
+ void (*dd)(void); /* disable */
+ void (*dfl)(void); /* flush */
+ void (*dflr)(unsigned long a, unsigned long b);
+ void (*din)(void); /* invalidate */
+ void (*dinr)(unsigned long a, unsigned long b);
+};
+
+/* microblaze cache */
+extern struct scache *mbc;
+
+void microblaze_cache_init(void);
+
+#define enable_icache() mbc->ie();
+#define disable_icache() mbc->id();
+#define flush_icache() mbc->ifl();
+#define flush_icache_range(start, end) mbc->iflr(start, end);
+#define invalidate_icache() mbc->iin();
+#define invalidate_icache_range(start, end) mbc->iinr(start, end);
+
+
+#define flush_icache_user_range(vma, pg, adr, len) flush_icache();
+#define flush_icache_page(vma, pg) do { } while (0)
+
+#define enable_dcache() mbc->de();
+#define disable_dcache() mbc->dd();
/* FIXME for LL-temac driver */
-#define invalidate_dcache_range(start, end) \
- __invalidate_dcache_range(start, end)
-
-#define flush_cache_all() __invalidate_cache_all()
-#define flush_cache_mm(mm) do { } while (0)
-#define flush_cache_range(vma, start, end) __invalidate_cache_all()
-#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
+#define invalidate_dcache() mbc->din();
+#define invalidate_dcache_range(start, end) mbc->dinr(start, end);
+#define flush_dcache() mbc->dfl();
+#define flush_dcache_range(start, end) mbc->dflr(start, end);
-#define flush_dcache_range(start, end) __invalidate_dcache_range(start, end)
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
+/* D-cache aliasing problem can't happen - cache is between MMU and ram */
#define flush_dcache_page(page) do { } while (0)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-#define flush_icache_range(start, len) __invalidate_icache_range(start, len)
-#define flush_icache_page(vma, pg) do { } while (0)
-
-#ifndef CONFIG_MMU
-# define flush_icache_user_range(start, len) do { } while (0)
-#else
-# define flush_icache_user_range(vma, pg, adr, len) __invalidate_icache_all()
-
-# define flush_page_to_ram(page) do { } while (0)
-# define flush_icache() __invalidate_icache_all()
-# define flush_cache_sigtramp(vaddr) \
- __invalidate_icache_range(vaddr, vaddr + 8)
-
-# define flush_dcache_mmap_lock(mapping) do { } while (0)
-# define flush_dcache_mmap_unlock(mapping) do { } while (0)
+#define flush_cache_dup_mm(mm) do { } while (0)
+#define flush_cache_vmap(start, end) do { } while (0)
+#define flush_cache_vunmap(start, end) do { } while (0)
+#define flush_cache_mm(mm) do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
-# define flush_cache_dup_mm(mm) do { } while (0)
+/* MS: kgdb code use this macro, wrong len with FLASH */
+#if 0
+#define flush_cache_range(vma, start, len) { \
+ flush_icache_range((unsigned) (start), (unsigned) (start) + (len)); \
+ flush_dcache_range((unsigned) (start), (unsigned) (start) + (len)); \
+}
#endif
-#define flush_cache_vmap(start, end) do { } while (0)
-#define flush_cache_vunmap(start, end) do { } while (0)
-
-struct page;
-struct mm_struct;
-struct vm_area_struct;
-
-/* see arch/microblaze/kernel/cache.c */
-extern void __invalidate_icache_all(void);
-extern void __invalidate_icache_range(unsigned long start, unsigned long end);
-extern void __invalidate_icache_page(struct vm_area_struct *vma,
- struct page *page);
-extern void __invalidate_icache_user_range(struct vm_area_struct *vma,
- struct page *page,
- unsigned long adr, int len);
-extern void __invalidate_cache_sigtramp(unsigned long addr);
-
-extern void __invalidate_dcache_all(void);
-extern void __invalidate_dcache_range(unsigned long start, unsigned long end);
-extern void __invalidate_dcache_page(struct vm_area_struct *vma,
- struct page *page);
-extern void __invalidate_dcache_user_range(struct vm_area_struct *vma,
- struct page *page,
- unsigned long adr, int len);
-
-extern inline void __invalidate_cache_all(void)
-{
- __invalidate_icache_all();
- __invalidate_dcache_all();
-}
+#define flush_cache_range(vma, start, len) do { } while (0)
-#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
-do { memcpy((dst), (src), (len)); \
- flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+do { \
+ memcpy((dst), (src), (len)); \
+ flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
} while (0)
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
- memcpy((dst), (src), (len))
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+do { \
+ memcpy((dst), (src), (len)); \
+} while (0)
#endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */
git.openpandora.org / pandora-kernel.git / blobdiff