Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / m68k / include / asm / cacheflush_no.h

diff --git a/arch/m68k/include/asm/cacheflush_no.h b/arch/m68k/include/asm/cacheflush_no.h
index 7085bd51668b96d101c44b2506cf730812a23eaa..cb88aa96c4f1adaa21b3d609a965107343f9def2 100644 (file)
--- a/arch/m68k/include/asm/cacheflush_no.h
+++ b/arch/m68k/include/asm/cacheflush_no.h
@@ -2,21 +2,22 @@
 #define _M68KNOMMU_CACHEFLUSH_H
 
 /*
- * (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
+ * (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
  */
 #include <linux/mm.h>
+#include <asm/mcfsim.h>
 
 #define flush_cache_all()                      __flush_cache_all()
 #define flush_cache_mm(mm)                     do { } while (0)
 #define flush_cache_dup_mm(mm)                 do { } while (0)
-#define flush_cache_range(vma, start, end)     __flush_cache_all()
+#define flush_cache_range(vma, start, end)     do { } while (0)
 #define flush_cache_page(vma, vmaddr)          do { } while (0)
-#define flush_dcache_range(start,len)          __flush_cache_all()
+#define flush_dcache_range(start, len)         __flush_dcache_all()
 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
 #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)          __flush_cache_all()
+#define flush_icache_range(start, len)         __flush_icache_all()
 #define flush_icache_page(vma,pg)              do { } while (0)
 #define flush_icache_user_range(vma,pg,adr,len)        do { } while (0)
 #define flush_cache_vmap(start, end)           do { } while (0)
@@ -27,66 +28,52 @@
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
        memcpy(dst, src, len)
 
+void mcf_cache_push(void);
+
 static inline void __flush_cache_all(void)
 {
-#if defined(CONFIG_M5407) || defined(CONFIG_M548x)
-       /*
-        *      Use cpushl to push and invalidate all cache lines.
-        *      Gas doesn't seem to know how to generate the ColdFire
-        *      cpushl instruction... Oh well, bit stuff it for now.
-        */
-       __asm__ __volatile__ (
-               "nop\n\t"
-               "clrl   %%d0\n\t"
-               "1:\n\t"
-               "movel  %%d0,%%a0\n\t"
-               "2:\n\t"
-               ".word  0xf468\n\t"
-               "addl   #0x10,%%a0\n\t"
-               "cmpl   #0x00000800,%%a0\n\t"
-               "blt    2b\n\t"
-               "addql  #1,%%d0\n\t"
-               "cmpil  #4,%%d0\n\t"
-               "bne    1b\n\t"
-               "movel  #0xb6088500,%%d0\n\t"
-               "movec  %%d0,%%CACR\n\t"
-               : : : "d0", "a0" );
-#endif /* CONFIG_M5407 */
-#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
-       __asm__ __volatile__ (
-               "movel  #0x81400100, %%d0\n\t"
-               "movec  %%d0, %%CACR\n\t"
-               "nop\n\t"
-               : : : "d0" );
-#endif /* CONFIG_M523x || CONFIG_M527x */
-#if defined(CONFIG_M528x)
-       __asm__ __volatile__ (
-               "movel  #0x81000200, %%d0\n\t"
-               "movec  %%d0, %%CACR\n\t"
-               "nop\n\t"
-               : : : "d0" );
-#endif /* CONFIG_M528x */
-#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
+#ifdef CACHE_PUSH
+       mcf_cache_push();
+#endif
+#ifdef CACHE_INVALIDATE
        __asm__ __volatile__ (
-               "movel  #0x81000100, %%d0\n\t"
+               "movel  %0, %%d0\n\t"
                "movec  %%d0, %%CACR\n\t"
                "nop\n\t"
-               : : : "d0" );
-#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
-#ifdef CONFIG_M5249
+               : : "i" (CACHE_INVALIDATE) : "d0" );
+#endif
+}
+
+/*
+ * Some ColdFire parts implement separate instruction and data caches,
+ * on those we should just flush the appropriate cache. If we don't need
+ * to do any specific flushing then this will be optimized away.
+ */
+static inline void __flush_icache_all(void)
+{
+#ifdef CACHE_INVALIDATEI
        __asm__ __volatile__ (
-               "movel  #0xa1000200, %%d0\n\t"
+               "movel  %0, %%d0\n\t"
                "movec  %%d0, %%CACR\n\t"
                "nop\n\t"
-               : : : "d0" );
-#endif /* CONFIG_M5249 */
-#ifdef CONFIG_M532x
+               : : "i" (CACHE_INVALIDATEI) : "d0" );
+#endif
+}
+
+static inline void __flush_dcache_all(void)
+{
+#ifdef CACHE_PUSH
+       mcf_cache_push();
+#endif
+#ifdef CACHE_INVALIDATED
        __asm__ __volatile__ (
-               "movel  #0x81000200, %%d0\n\t"
+               "movel  %0, %%d0\n\t"
                "movec  %%d0, %%CACR\n\t"
                "nop\n\t"
-               : : : "d0" );
-#endif /* CONFIG_M532x */
+               : : "i" (CACHE_INVALIDATED) : "d0" );
+#else
+       /* Flush the wrtite buffer */
+       __asm__ __volatile__ ( "nop" );
+#endif
 }
-
 #endif /* _M68KNOMMU_CACHEFLUSH_H */